KR100859856B1 - Locking device for extension pipe of vacuum cleaner - Google Patents

Abstract

Disclosed is a sliding extension tube locking device for a vacuum cleaner which not only has a small number of components but also facilitates attachment and detachment of an extension tube, thereby contributing to improved convenience of using a cleaner. Disclosed is a holder coupled to a manipulation handle of a cleaner and having a fixing hole radially open; A locking member having one end inserted into the cleaner extension tube, the other end extrapolated to the holder, and an elastic locker provided at the position corresponding to the fixing hole of the holder insertion part to lock the holder by locking the fixing hole; And a slide movable to a first position and a second position on an outer circumference of the locking member, the inner circumferential surface of which is released from the locking hole of the fixing hole of the elastic rocker at the second position to separate the holder from the locking member. It includes; a locking release member having a locking release projection to be. The elastic rocker is formed by cutting the locking projection downward on the free end side of the elastic piece formed by cutting a part of the locking member, and a pair of inclined guides are formed on both sides of the locking projection. Then, the pair of unlocking projections are arranged to contact the pair of inclined guides through the cutout, so that the locking projections are lifted when the locking release member is moved to the second position to release the locking of the holder. It is configured to.

Cleaner, Tube, Combined, Breakaway, Locking, Sliding

Description

LOCKING DEVICE FOR EXTENSION PIPE OF VACUUM CLEANER}

1 is a perspective view showing a general vacuum cleaner,

2 is a partial cutaway cross-sectional view showing an extension tube locking device of a conventional vacuum cleaner;

Figure 3 is an exploded perspective view showing the extension tube locking device of the vacuum cleaner according to an embodiment of the present invention,

4 is an assembled cross-sectional view of FIG.

Figure 5a is a plan view showing an extract of the main portion of Figure 4 to explain the operation of the present invention, and

FIG. 5B is a cross-sectional view taken along the line VV of FIG. 5A.

<Description of Symbols for Major Parts of Drawings>

12; operation handle 13; extension tube

100; holder 121; fixing hole

200; locking member 211; elastic rocker

212; elastic piece 213; locking protrusion

214; Tilt guide 300; Unlocking member

310; unlocking protrusion 400; elastic member

The present invention relates to an extension tube locking device of a vacuum cleaner, and more particularly to a slide extension tube locking device.

As shown in FIG. 1, a general vacuum cleaner includes an operation handle 12 including a cleaner main body 10 to which main products such as a vacuum generator, etc. are mounted, and a flexible hose 11 connected to the cleaner main body 10. , An extension pipe 13 connected to the operation handle 12, a suction brush 14 connected to an end of the extension pipe 13, and an extension pipe detachably supporting the operation handle 12 and the extension pipe 13. Locking device 15 and the like.

The extension pipe locking device 15 is the suction handle 14 as shown in Figure 1 and the plurality of auxiliary brushes (not shown) provided for cleaning the gap and the like to change the cleaning according to the surface to be cleaned, the operation handle 12 ) And the extension pipe 13 is maintained so that it can be easily detached.

Figure 2 is a partial cutaway cross-sectional view showing the extension tube locking device of a conventional vacuum cleaner. As shown in FIG. 2, the extension tube locking device of the conventional vacuum cleaner includes a holder 40, a locking member 50, an elastic member 60, and a cap 70.

The holder 40 is configured in the form of a hollow pipe, and both ends are provided with first and second connecting portions 41 and 42 to which the operation handle 12 and the extension tube 13 are connected, respectively. In addition, a locking hole 42a corresponding to the fixing hole 13a formed in the extension tube 13 is formed in the second connection part 42 of the holder 40.

The locking member 50 has a hook portion 51 protruding into the second connection portion 42 through the locking hole 42a and a button portion 52 extending from the hook portion 51. The holder 40 is rotatably installed around the hinge 80. In addition, one side of the hook portion 51 is provided with a predetermined inclined surface (51a).

The elastic member 60 is elastically supported so that the locking member 50 pivots counterclockwise in the drawing about the hinge 80, whereby the locking member 50 has its hook portion 51 The state inserted into the locking hole 42a, that is, the locking state is always maintained. As the elastic member 60, a compression coil spring is usually used.

The cap 70 is coupled to the outside of the holder 40 to cover the hook portion 51 and the hinge 80 of the elastic member 60 and the locking member 50. As a result, each component is not exposed to the outside, and the elastic force of the elastic member 60 can be exerted.

The extension tube locking device of the conventional vacuum cleaner configured as described above, when the button portion 52 of the locking member 50 is pressed in the extension tube locking state as shown in FIG. 2, the locking member 50 opens the hinge 80. It is rotated in the clockwise direction in the center, by which the hook 51 is released from the fixing hole (13a) of the extension tube 13, the locking is released to be able to separate the extension tube (13).

After the extension tube 13 is separated, the locking member 50 is maintained in an initial state by the elastic force of the elastic member 60, that is, the hook portion 51 is inserted into the locking hole 42a. All. In such a state, when the extension tube 13 is inserted into the second connection portion 42 of the holder 40 to reconnect the extension member 13 and the hook portion 51 to be inserted, the locking member is interfered with. 50 is rotated clockwise around the hinge (80). At this time, when the extension tube 13 is inserted into a position in which the fixing hole 13a of the extension tube 13 coincides with the locking hole 42a of the holder 40, the hook portion 51 is the elastic member 60. The extension tube 13 is locked while being inserted into the fixing hole 13a through the locking hole 42a by the elasticity of the. Here, the extension pipe 13 is smoothly inserted by the inclined surface (51a) of the hook portion 51.

However, the extension tube locking device of the general vacuum cleaner as described above returns the locking member 50 and the locking member 50 to the initial position in which the hook portion 51 and the button portion 52 are integrally formed. There is a problem that requires a large number of parts, such as having to provide a separate elastic member 60 for, there is also a problem that the detachable extension tube is inconvenient to the button type to separate the extension tube by pressing the button portion.

The present invention has been made in view of the above, and an object thereof is to provide a sliding extension tube locking device for a vacuum cleaner that not only has a small number of components but also facilitates attachment and detachment of an extension tube and contributes to improved convenience of using a cleaner.

Extension tube locking device for a vacuum cleaner according to the present invention for achieving the above object, the holder coupled to the operation handle of the vacuum cleaner, the holder having a fixing hole opened in the radial direction; A locking member having one end inserted into the extension tube of the cleaner, the other end extrapolated to the holder, and an elastic locker provided at the position corresponding to the fixing hole of the holder insertion part to lock the holder by locking the fixing hole; And a slide movable to a first position and a second position on an outer circumference of the locking member, the inner circumferential surface of which is released from the locking hole of the fixing hole of the elastic rocker at the second position to separate the holder from the locking member. It includes; a locking release member having a locking release projection to be.

The elastic rocker is formed by cutting the locking projection downward on the free end side of the elastic piece formed by cutting a part of the locking member, and a pair of inclined guides are formed on both sides of the locking projection. Then, the pair of unlocking projections are arranged to contact the pair of inclined guides through the cutout, so that the locking projections are lifted when the locking release member is moved to the second position to release the locking of the holder. It is configured to.

The pair of unlocking protrusions may be configured to have an inclined surface corresponding to the inclined guide, and the pair of unlocking protrusions may be formed in a parallelogram.

According to a preferred embodiment of the present invention, an extension tube locking device of a vacuum cleaner includes an elastic member interposed between the unlocking member and the extension tube to elastically support the unlocking member to the first position.

Here, the compression coil spring is used as the elastic member.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is an exploded perspective view showing the extension tube locking device of the vacuum cleaner according to an embodiment of the present invention, Figure 4 is an assembled cross-sectional view of Figure 3, Figure 5a is an extract showing the main portion of Figure 4 to illustrate the operation of the present invention 5B is a cross-sectional view taken along the line VV of FIG. 5A.

As shown in Figure 3 and 4, the extension pipe locking device of the vacuum cleaner according to an embodiment of the present invention, the holder 100 is connected to the operation handle 12 of the vacuum cleaner, the extension pipe 13 of the cleaner And a locking member 200 that is selectively connected to the holder 100, a locking release member 300, and an elastic member 400 that release the locking of the locking member 200 to the holder 100. .

The holder 100 includes a first cylindrical portion 110 coupled to the manipulation handle 12 and a second cylindrical portion 120 having a larger diameter than the first cylindrical portion 110. On both sides of the outer circumferential surface of the first cylindrical portion 110, a fixing protrusion 111 inserted into and coupled to the fixing groove 12a formed in the manipulation handle 12 is formed so as to be able to project. In addition, one side of the second cylindrical portion 120 is formed with a fixing hole 121 opened in the radial direction.

The locking member 200 has a first cylindrical portion 210 extrapolated to the second cylindrical portion 120 of the holder 100 and a second cylindrical portion 220 having a smaller diameter than the first cylindrical portion 210. It is provided. One side of the first cylindrical portion 210 is provided with an elastic locker 211 is locked to the fixing hole 121 of the holder 100 to lock the holder 100. And, on both sides of the outer circumferential surface of the second cylindrical portion 220 is formed a fixing projection 221 is inserted into the fixing groove (13a) formed in the extension tube (13) so as to stand out.

The locking protrusion 213 is projected downward on the free end side of the elastic piece 212 formed by cutting a part of the first cylindrical portion 210 of the elastic locker 211. A pair of inclined guides 214 are formed on both sides. Such an elastic rocker 211 is elastically biased downward by its own elasticity of the elastic piece 212. When the locking member 200 and the holder 100 are coupled thereto, the locking of the elastic rocker 211 is performed. The holder locking state in which the protrusion 213 is inserted into the fixing hole 121 of the holder 100 is maintained.

The locking release member 300 is installed to be slidably moved to a first position and a second position on the outer circumference of the locking member 200, and the fixing hole of the elastic locker 211 at the second position on an inner circumferential surface thereof. The locking release protrusion 310 is provided to release the lock on the holder 121 so that the holder 100 is separated from the locking member 200. In addition, a support protrusion 320 for supporting the elastic member 400 to be described later is provided on the inner peripheral surface rear portion thereof.

As shown in FIGS. 5A and 5B, the unlocking member 300 includes a pair of inclined guides of the elastic locker 211 through a cutout of the elastic locker 211. 214 is installed to contact. Thus, when the locking release member 300 is moved from the first position to the second position, the locking protrusion 212 is lifted by the locking release protrusion 310 to release the locking of the holder 100.

The locking release protrusion 310 is preferably formed in the inclined surface corresponding to the inclined guide 214 in terms of smooth operation. More preferably, the locking release protrusion 310 is configured as a parallelogram as shown in the example.                     

The elastic member 400 is interposed between the locking release member 300 and the extension tube 13 to elastically support the locking release member 300 to the first position. Compression coil spring is generally used as the elastic member 400, but is not necessarily limited thereto, and any one may be used as long as it supports the locking release member 300 to the first position. When the compression coil spring is used, one end of the compression coil spring is supported by the support protrusion 320 provided inside the unlocking member 300, and the other end thereof is supported by the end of the extension pipe 13.

Hereinafter, the operation of the extension tube locking device of the vacuum cleaner according to the present invention configured as described above will be described.

Referring to FIG. 4 showing a holder locking state in which the holder 100 and the locking member 200 are coupled, the locking release member 300 is pushed toward the operation handle 12 by the elastic restoring force of the elastic member 400. It is moved to the position, whereby the elastic locker 211 of the locking member 200 is inserted into the fixing hole 121 of the holder (100). Therefore, the extension tube 13 is maintained without being separated from the holder 100 unless the locking protrusion 213 of the elastic locker 211 is released from the fixing hole 121.

When the extension tube 13 is to be removed, the locking release member 300 is slid in the direction of the arrow shown in FIG. 4. Then, as shown in FIG. 5B, the unlocking protrusion 310 of the unlocking member 300 contacts the inclined guide 214 of the elastic rocker 211 and lifts the elastic rocker 211 upward. Accordingly, the locking protrusion 213 inserted into the fixing hole 121 of the holder 100 is released from the fixing hole 121 and the locking of the holder 100 is released to thereby lock the locking member 200, that is, the extension pipe 13. ) Can be separated from the holder (100). As such, the present invention can easily separate the extension tube 13 from the holder 100 in a simple operation of sliding the locking release member 300 in the extension tube 13 separation direction.

After the extension tube 13 is removed and the locking release member 300 is released, the locking release member 300 is moved to its original position, that is, the first position by the elastic member 400, thereby resilient the locking member 200. The locker 211 is also returned to the initial position.

Next, when the locking member 200 and the holder 100 are combined to reconnect the extension tube 13, the holder 100 temporarily pushes up the elastic rocker 211 while the locking member 200 and the holder ( 100 is coupled, and in this case, when the fixing hole 121 of the holder 100 comes to the locking protrusion 213 position of the elastic locker 211, the locking protrusion (21) may be caused by its own elasticity. 213 is inserted into the fixing hole 121 of the holder 100 to enter the holder locking state.

The extension tube locking device of the vacuum cleaner according to the present invention as described above can separate the extension tube from the holder by a simple operation of sliding the unlocking member in the extension tube separation direction. That is, according to the present invention, the extension tube can be easily attached and detached, thereby improving user convenience, and thus, it is possible to provide a very satisfactory vacuum cleaner in terms of user preference, thereby further enhancing product competitiveness.                     

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 (6)

A locking device for detachably supporting an extension tube selectively coupled to an operation handle of a cleaner, A holder coupled to the operation handle and having a fixing hole radially open; A locking member having an elastic locker having one end interpolated into the extension tube and the other end extrapolated to the holder, the locking hole being locked to the fixing hole at a position corresponding to the fixing hole of the holder insert; And It is installed on the outer circumference of the locking member so as to be slidably moved to the first position and the second position, and the holder is separated from the locking member by releasing the latch on the fixing hole of the elastic rocker in the second position on the inner peripheral surface It includes; a locking release member provided with a locking release projection to, The elastic rocker is formed by cutting the locking projection downward on the free end side of the elastic piece formed by cutting a part of the locking member and a pair of inclined guides are formed on both sides of the locking projection, and the pair of the locking And a release protrusion is arranged to contact the pair of inclined guides through the cutout, so that the locking protrusion is lifted when the locking release member is moved to the second position to release the holder. Extension tube locking device of the vacuum cleaner. delete The method of claim 1, And said pair of unlocking protrusions have an inclined surface corresponding to said inclined guide. The method of claim 1, And said pair of unlocking projections are formed in a parallelogram. The method of claim 1, And an elastic member interposed between the locking release member and the extension tube to elastically support the locking release member to the first position. The method of claim 5, wherein The elastic member is an extension pipe locking device of the vacuum cleaner, characterized in that consisting of a compression coil spring.

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