KR100652488B1 - Inhalation nozzle for vacuum cleaner - Google Patents

Abstract

A suction nozzle for a vacuum cleaner is provided to contact front and rear flexible blades to a floor alternately by mounting front and rear friction wheels with simple mechanism, to increase responsiveness by restricting rotation angle of the flexible blade with a stopper, to operate the flexible blade accurately by restricting the friction wheel from idling, to improve durability by making the flexible blade of rubber, and to remove dirt from a floor easily by turning a brush in the suction port. A suction nozzle of a vacuum cleaner includes a case having a suction port(202) formed in a bottom, a front rotating shaft(233a) installed in the front of the suction port, a rear rotating shaft(233b) installed in a rear part of the suction port, a front friction wheel(235a) installed at both sides of the front rotating shaft, a rear friction wheel(235b) installed at both sides of the rear rotating shaft, a front flexible blade(231a) installed in the front rotating shaft, and a rear flexible blade(231b) installed in the rear rotating shaft. A stopper is formed in the case to restrict rotational angle of the flexible blade, and a return spring is mounted between the stopper and the flexible blade.

Description

Suction nozzle for vacuum cleaner {inhalation nozzle for vacuum cleaner}

1 is a side cross-sectional view showing a suction nozzle for a conventional vacuum cleaner.

Figure 2 is a side cross-sectional view showing a conventional suction nozzle for another vacuum cleaner.

Figure 3 is a perspective view showing a suction nozzle for a vacuum cleaner according to a preferred embodiment of the present invention.

4 is a schematic bottom view of FIG. 3 with the brush omitted;

Figures 5a to 5c is a side view schematically showing the operating state of the suction nozzle for the vacuum cleaner according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

200: suction nozzle 202: suction port

208: wheels 210: case

211a, 211b: Stopper 230a, 230b: Squeeze

231a, 231b: Flexible Blade

233a, 233b: Rotating shaft 235a, 235b: Friction wheel

250: rotating brush

Cited Reference 1: Korean Laid-Open Patent Publication No. 2004-0047365

Cited Reference 2: Korean Laid-Open Patent Publication No. 1995-0007780

The present invention relates to a suction nozzle for a vacuum cleaner, comprising a front and rear rubber blade rotatably installed in front and rear of the suction port, and which adds a cleaning ability during reverse movement.

The rubber blade of a conventional vacuum cleaner (or robot cleaner) is fixed to a case. Therefore, when pushing in the forward direction, the garbage sucked from the suction port and not yet sucked in falls behind or remains in front of the fixed rubber blade.

On the other hand, when reversing or pulling back, the remaining trays are pushed back by the fixed rubber blades and do not reach the inlet and are scattered around. In other words, when it is pulled back, the structure is irrelevant to the cleaning effect, but in theory, it becomes a structure where garbage cannot enter.

As a suction nozzle for a conventional vacuum cleaner for solving such troubles, for example, those disclosed in Korean Patent Laid-Open Publication No. 2004-0047365 and Korean Patent Publication No. 1995-007007780 have been proposed.

The suction nozzle for the vacuum cleaner of Korean Laid-Open Patent Publication No. 2004-0047365 is respectively formed before and after the suction port 102 so that air containing foreign matter is sucked into the bottom surface of the suction nozzle 100, and the air sucked into the suction port 102 is used. A rubber felt 130 is installed inside the casing 110 to guide the cleaner body 2, and both ends of the rubber felt 130 are provided with a squeeze 128 for collecting dust from the bottom surface. At the bottom of the casing 110 adjacent to the suction port 102, slits 108a and 108b are formed to expose the squeeze 128, so that the squeeze 128 can selectively enter and exit the slits 108a and 108b. A rotating roller 140 for transmitting power to the rubber felt 130 is installed inside the casing 110, and the auxiliary wheel 120 that rotates according to the forward and backward progress of the suction nozzle 100 corresponds to the rotating roller 140. The casing 110 is installed on the bottom surface.

On the other hand, the suction nozzle for vacuum cleaner of Korea Patent Publication No. 1995--0007780 is installed on the base (2) of the suction port (1) is attached to the sweeper (4) for collecting dust, guide rod (6) and seating groove (7) ) Is formed to rotate the support member 5 when cleaning, and the front wheel is formed on the shaft (8) seated in the seating groove (7) is rotated and the fixing groove (9) is inserted into the guide rod (6) is formed And a support rib 10 inserted into the shaft 8 to support the shaft 8 to the base 92.

According to the above-cited references 1 and 2, the rubber blade (squeeze or sweeper) is located in front and rear of the suction port according to the moving direction to increase the cleaning efficiency, but its operation mechanism and configuration is too complicated.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a suction nozzle for a vacuum cleaner which has a reliable operating mechanism and doubles the cleaning ability in the direction of travel, in particular, in reverse.

Suction nozzle for a vacuum cleaner of the present invention for achieving the above object is a case formed with a suction port on the bottom surface; A front rotating shaft installed in front of the suction port; A rear rotating shaft installed at the rear of the suction port; Front friction wheels installed on both sides of the front rotating shaft; Rear friction wheels installed at both sides of the rear rotation shaft; A front flexible blade installed on the front rotation shaft; A rear flexible blade installed on the rear rotation shaft; It is made, including.

According to this configuration, the operation mechanism is assured, and the cleaning ability in the direction of travel, in particular, in reverse, can be doubled.

In the above configuration, if the stopper is formed in the case to limit the rotation angle of the flexible blade, it is possible to increase the response speed of the flexible blade.

In addition, if a return spring is further installed between the stopper and the flexible blade, one blade is recessed on the inlet side during non-operation so as not to interfere with cleaning.

In addition, when the friction wheel is formed with a tooth, it is possible to implement the correct operation of the flexible blade by preventing the friction wheel is idle.

In addition, the front flexible blade and the rear flexible blade is implemented in a rubber blade, it is preferable in terms of adhesion and durability. In addition, it can be implemented with a urethane blade or a plastic brush instead of the rubber blade.

In addition, it is preferable that a rotary brush is further installed at the suction port.

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

Figure 3 is a perspective view showing a suction nozzle for a vacuum cleaner according to a preferred embodiment of the present invention, Figure 4 is a schematic bottom view of Figure 3, Figures 5a to 5c for a vacuum cleaner according to an embodiment of the present invention Side view schematically showing the operating state of the suction nozzle.

3 and 4, the suction nozzle 200 for the vacuum cleaner of the present embodiment is a case 210, the suction port 202 is formed on the bottom surface, and the squeeze 230a installed in front and rear of the suction port 202 230b).

The case 210 is preferably composed of a lower case 210a having an inlet 202 and an upper case 210b assembled with the lower case 210a.

The lower case (210a) is preferable because the wheel 208 is to reduce the friction with the floor as it proceeds.

The squeeze 230a and 230b may include rotating shafts 233a and 233b provided in front and rear of the suction port 202, and friction wheels 235a and 235b provided on both sides of the rotating shafts 233a and 233b. The flexible blades 231a and 231b are installed on the rotary shafts 233a and 233b.

In this case, it is preferable that stoppers 211a and 211b limit the rotation angles of the flexible blades 231a and 231b in the case 210.

That is, as shown in Figure 4, the stopper (211a) (211b) which is a plate formed stepped or inclined in the case 210 is formed. Therefore, the flexible blades 231a and 231b stay in a predetermined position in the suction port 202 and can quickly contact the floor as the friction wheels 235a and 235b rotate.

In addition, more specifically, a return spring (not shown) may be installed between the stoppers 211a and 211b and the flexible blades 231a and 231b. Since the return spring imparts the characteristic of restoring the flexible blades 231a and 231b to their original positions, reliable operation can be performed.

In addition, the friction wheel 235a (235b) is preferably formed with a tooth. This is because the squeeze 230a, 230b independently installed before and after can minimize an operation miss due to slip.

In addition, the flexible blades 231a and 231b are preferably made of a rubber material having excellent adhesion to the floor and durability. In addition, the flexible blades 231a and 231b may be implemented with a urethane blade or a plastic brush.

1 and 2, when the rotary brush 250 is provided on the suction port 202, it is effective to remove the old time, such as dust adhered to the floor. The rotary brush 250 is rotatably installed at both sides of the case 210.

From the above configuration, the vacuum cleaner suction nozzle of this embodiment operates as shown in Figs. 5A to 5C.

In the stopped state of FIG. 5A, the rubber blades 231a and 231b are disposed on the stoppers 211a and 211b in directions facing each other.

In this stationary state, when moving forward (when pushing), as shown in Fig. 5B, the front rubber blade 231a is still by the stopper 211a, and the rear rubber blade 231b rotates toward the bottom to collect the garbage. Is done.

As shown in FIG. 5C, when the reverse (when pulled) the rear rubber blade 230 is rotated in the opposite direction and is stopped by the stopper 211b, and the front rubber blade 231a rotates toward the bottom to collect the garbage. Do it.

As such, the rubber blades 231a and 231b alternately contact the inlet 202 between the floors according to the traveling direction, and thus, the cleaning effect is exhibited even when reversing as in the forward direction, thereby increasing the cleaning efficiency twice. .

The suction nozzle for the vacuum cleaner according to the present invention is not limited to the above-described embodiment, and may be variously modified and implemented within the range permitted by the technical idea of the present invention.

As apparent from the above description, the vacuum cleaner suction nozzle of the present invention has the following effects.

First, the front and rear friction wheels are installed on both sides of the front and rear rotation shafts in which the flexible blades are installed at the front and rear of the suction port, thereby simplifying the operation structure and mechanism in which the front and rear flexible blades alternately contact the floor according to the traveling direction.

Second, the case is formed with a stopper for limiting the rotation angle of the flexible blade, thereby preventing the flexible blade rotates 360 degrees completely to increase the operation response speed.

Third, the return spring is further installed between the stopper and the flexible blade, so that the non-operating flexible blade is recessed into the inlet side and does not function as an obstacle or obstacle to cleaning. In other words, if the front and rear flexible blades contact the floor at the same time, the outer garbage therebetween cannot be collected into the suction port, so it must alternately contact the floor.

Fourth, the friction wheel is formed with a tooth, it is possible to implement the correct operation of the flexible blade to prevent the rubbing of the friction wheel.

Fifth, the front flexible blade and the rear flexible blade can be implemented by a rubber blade, thereby improving adhesion and durability with the bottom.

Sixth, the rotatable brush is further installed in the suction port, so that it is easy to remove old dust and the like attached to the bottom.

Claims (6)

A case having a suction port formed on the bottom surface thereof; A front rotating shaft installed in front of the suction port; A rear rotating shaft installed at the rear of the suction port; Front friction wheels installed on both sides of the front rotating shaft; Rear friction wheels installed at both sides of the rear rotation shaft; A front flexible blade installed on the front rotation shaft; A rear flexible blade installed on the rear rotation shaft; Suction nozzle for vacuum cleaner comprising a. The method of claim 1, The case has a stopper for vacuum cleaner, characterized in that the stopper is formed to limit the rotation angle of the flexible blade. The method of claim 2, A suction nozzle for the vacuum cleaner, characterized in that a return spring is further installed between the stopper and the flexible blade. The method of claim 3, Suction nozzle for the vacuum cleaner, characterized in that the friction wheel is formed with a tooth. The method according to any one of claims 1 to 4, The front flexible blade and the rear flexible blade is a suction blade for a vacuum cleaner, characterized in that the rubber blade, urethane blade or plastic brush. The method of claim 5, The suction nozzle for the vacuum cleaner, characterized in that the rotary brush is further installed in the suction port.

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