KR20000001979U - Packing guide structure of vacuum cleaner expansion tube - Google Patents

Abstract

The present invention relates to a packing guide structure of a vacuum cleaner expansion tube for guiding a packing which prevents a minute gap between the first pipe and the second pipe to be slidingly coupled at all times. A flexible pipe 20 composed of a second pipe 25 slidingly coupled into the pipe 21 and a guide pipe 23 interposed between the first pipe 21 and the second pipe 25 for tightness. In the sealed structure of the vacuum cleaner expansion tube to fit the packing member 28 to prevent the gap between the second pipe 25 and the guide pipe 23 to increase the tightness at the rear end of the guide pipe 23,

A guide groove 25a in the longitudinal direction is formed on the outside of the second pipe 25, and one side end of the packing member 28 is fitted into the guide groove 25a of the second pipe 25 to seal the packing member 28. Guide stopper 29 for determining the packing position of the "

Description

Packing guide structure of vacuum cleaner expansion tube

The present invention relates to a packing guide structure of a vacuum cleaner expansion tube, and more particularly, a packing of a vacuum expansion tube for guiding the packing to prevent a minute gap between the first pipe and the second pipe that is slidingly coupled so that the sealed structure is always maintained. Guide structure.

Generally, a vacuum cleaner is a cleaning tool widely used for a broom or a mop dust collecting dust or other foreign substances on the floor with a strong suction force driven by a fan motor, and the configuration of the vacuum cleaner will be briefly described in FIG. same.

A dust bag is installed inside the main body 10 and the suction end of the main body 10. The dust bag which collects dust and foreign matters while being sucked by dust generated by the driving of the fan motor is installed. A guide means for guiding to be collected is provided, the guide means is connected to the suction end of the main body 10 and the flexible tube 12 is free to move in any direction and can be switched, whether or not the user's body and place The flexible tube 20 is configured to be freely adjusted according to the length, and between the flexible tube 12 and the elastic tube 20, a control unit 16 for controlling the fan motor to adjust the suction force is located. .

In addition, the end of the expansion pipe 20 is provided with a brush 17 to collect the foreign matter or dust according to the floor state.

Looking at the configuration of the expansion tube 20 in the configuration of the overall vacuum cleaner in more detail in Figure 2 as follows.

The expansion pipe 20 has a large first end 21 is connected to the flexible pipe 12 or the control unit 16, one end is connected to the brush 17 and the other end is the first pipe 21. The second pipe 25 is slidably coupled to the inner diameter of the) and selectively stretched.

One side outer circumference of the second pipe 25 is configured with a detachable lock portion 26 that is separated / coupled with the brush 17, and the outer circumference of the second pipe 25 is positioned at regular intervals. The positioning plate 27 on which the groove 27a is extended is attached.

On the other hand, the one side outer periphery of the first pipe 21 is fitted with a positioning groove (27a) of the positioning plate 27, the expansion and contraction control unit 22 for determining the expansion position of the second pipe (25) The brush 17 during the cleaning operation due to the coupling clearance between the first pipe 21 and the second pipe 25 between the first pipe 21 and the second pipe 25, which is configured and is also a sliding coupling portion. The guide pipe 23 for preventing the inflow of air from the gap other than) is interposed.

In addition, even if the guide pipe 23 maintains its tight state from the second pipe 25, since it is a sliding coupling, a fine state cannot be completely excluded, and thus a closed state is provided on the rear side of the guide pipe 27. A rubber packing member 28 is held therein.

However, in the conventional hermetic seal structure, the packing member 28 at the time when the second pipe 25 is completely extended from the first pipe 21 is larger than the pressure of the air flowing from the gap of the guide pipe 23. Due to the larger suction force, the problem is caused to be pushed toward the first pipe 21 to lose more sealed structure.

As a result, the amount of air introduced into the gap of the guide pipe 23 is increased, resulting in a decrease in the suction force of the fan motor as a whole.

Therefore, the present invention has been devised to solve the above problems, the purpose of which is to expand the vacuum cleaner of the vacuum cleaner that guides the sealing structure to always maintain the packing to prevent the micro-gap between the first pipe and the second pipe is sliding coupling To provide a packing guide structure.

The present invention devised to achieve the above object, the expansion and construction consisting of a first pipe, a second pipe slidingly coupled into the interior of the first pipe and a guide pipe interposed for the close state between the first pipe and the second pipe, and the like. In the sealed structure of the vacuum cleaner expansion tube for fitting the packing member for blocking the gap between the second pipe and the guide pipe in order to increase the tightness to the rear end of the guide pipe in the pipe,

A guide groove in the longitudinal direction is formed on the outside of the second pipe, and a guide stopper is formed at one end of the packing member to fit into the guide groove of the second pipe to determine the packing position of the packing member.

1 is a perspective view showing the appearance of a vacuum cleaner;

Figure 2 is a side cross-sectional view and a main portion enlarged view showing a conventional expansion tube.

Figure 3 is an enlarged side cross-sectional view showing the main part expansion tube according to the present invention.

4 is a front view of a guide stopper for guiding the packing.

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

10: main body 12: flexible tube

16: control section 17: brush

20: expansion pipe 21: first pipe

22: expansion and contraction control unit 23: guide pipe

25: second pipe 25a: guide groove

26: lock portion 27: positioning plate

27a: positioning groove 28: packing member

29: guide stopper 29a: interview flange

29b: notch 29c: guide protrusion

29d: interview

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

Figure 3 is an enlarged side cross-sectional view of the main portion showing the expansion tube according to the present invention, Figure 4 is a front view of the guide stopper for guiding the packing.

The configuration of the present invention, the first pipe 21, the second pipe 25 and the first pipe 21 and the second pipe (25) which is slidingly coupled into the interior of the first state 21 Packing member 28 which prevents a gap between the second pipe 25 and the guide pipe 23 in order to increase the tightness at the rear end of the guide pipe 23 in the expansion pipe 20 including the guide pipe 23 interposed therebetween. In the sealed structure of the vacuum cleaner expansion tube to fit the

A guide groove 25a in the longitudinal direction is formed on the outer side of the second pipe 25, while one side end of the packing member 28 is fitted into the guide groove 25a of the second pipe 25 to form a packing member ( The guide stopper 29 which determines the packing position of 28) was comprised.

In more detail, the guide stopper 29 is slid from the inner circumferential surface of the second pipe 25 and is formed in a ring shape to have a constant inner diameter and a cutout portion 29b at one side for ease of assembly. An interview flange 29a is formed at the upper part to widen the contact area with the packing member 28, and a guide protrusion 29c is fitted at the lower part to be fitted with the guide groove 25a of the second pipe 25. .

More preferably, one surface of the guide stopper 29 which is in contact with the packing member 28 may further improve the tightness by forming the same interview recess 29d as the shape of the packing member 28.

Referring to the operation of the present invention configured as described above are as follows.

The assembly is first fixed to the inside of the first pipe 21 so that the guide pipe 23 is located under the expansion control 22, and then the second pipe 25 is fixed to the positioning plate 27 is fixed. The assembly is simply completed by sliding and sliding into the first pipe 21.

In addition, since the guide stopper 29 may be deteriorated to some extent by the cutout portion 29b having one side cut off, the guide stopper 29 may be more easily assembled.

When the fan motor (not shown) is operated in the assembled state as described above, the foreign matter in the order of the brush 17 → the second pipe 25 → the first pipe 21 → the flexible pipe 12 → the main body 10 of the vacuum cleaner. In this case, a gap is generated between the guide pipe 23 and the second pipe 25 due to the sliding coupling, and the gap inside the pipes 21 and 25 is larger than atmospheric pressure. Air from the atmosphere enters.

It is the purpose of the packing member 28 to block such clearance inlet air, but when the pressure inside each pipe 21 or 25 becomes larger, the packing member 28 is pushed toward a larger pressure and air is penetrated. Since the guide stopper 29 of the present invention may be guided to the guide groove 25a of the second pipe 25, the guide stopper 29 of the present invention may be guided to the interview flange 29a and the interview recess 29d of the guide stopper 29. As a result, the packing member 28 is always guided.

Accordingly, the sealing force of the packing member 28 can be maintained more closely.

The present invention described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have

When the present invention is applied as described above, the suction force is constant at the output of the fan motor because the packing member is always guided so that the exact position of the packing member to block the air flowing from the air is improved. A simple but very useful effect is expected.

Claims (2)

A guide pipe interposed for the first pipe 21 and the second pipe 25 slidably coupled to the inside of the first pipe 21 and a close state between the first pipe 21 and the second pipe 25 ( 23) a vacuum for fitting the packing member 28 which closes the gap between the second pipe 25 and the guide pipe 23 in order to increase the tightness at the rear end of the guide pipe 23 in the expansion pipe 20 composed of the same. In the sealed structure of the vacuum cleaner expansion pipe, A guide groove 25a in the longitudinal direction is formed on the outside of the second pipe 25, and one side end of the packing member 28 is fitted into the guide groove 25a of the second pipe 25 to seal the packing member 28. Packing guide structure of a vacuum cleaner expansion tube, characterized in that the configuration of the guide stopper 29 to determine the packing position of the). The method of claim 1, wherein the guide stopper 29 is formed in a ring shape of one side is cut so as to slide on the inner circumferential surface of the second pipe 25, the upper portion of the interview flange (in order to widen the interview area with the packing member 28) 29a) is formed, the lower portion of the packing guide structure with the vacuum cleaner expansion, characterized in that the guide projection (29c) is formed to be fitted with the guide groove (25a) of the second pipe (25).