KR100500846B1 - Height adjusting apparatus for upright type vacuum cleaner nozzle - Google Patents

Abstract

Disclosed is a height adjusting device of an upright type vacuum cleaner that can adjust a height of a suction brush and a floor surface in order to easily clean various cleaning surfaces. Height adjusting device for an upright vacuum cleaner according to the present invention, the suction brush body; A height adjusting knob rotatably installed on a seating portion provided in the suction brush body, the height adjusting knob having a height difference between a starting point and an end point at a portion of an end inserted into the suction brush body, and having a plurality of concave grooves therebetween; An aluminum height adjusting shaft in contact with the cam curve, the rod member and the reinforcing member being raised and lowered in accordance with the rotation direction of the knob integrally formed; And a brush front wheel rotatably coupled to the height adjustment shaft.

Description

Suction brush height adjusting device for upright vacuum cleaner {HEIGHT ADJUSTING APPARATUS FOR UPRIGHT TYPE VACUUM CLEANER NOZZLE}

The present invention relates to an upright type vacuum cleaner, and more particularly, to a suction brush height adjusting device of an upright type vacuum cleaner, in which a user can easily adjust an interval between a suction brush and a surface to be cleaned.

In general, an upright vacuum cleaner includes a cleaning main body provided with a driving motor for generating a suction force, and a suction brush installed at a lower side of the cleaning main body so as to rotate at a predetermined angle.

The cleaning body is provided with a filtering means and a waste container. Foreign matter sucked through the suction brush by the suction force of the drive motor is filtered by the filtering means, and then collected in the waste container.

In addition, a handle provided with an on / off switch is provided on the cleaning main body. Therefore, when the user cleans while holding the handle and moves the cleaner along the surface to be cleaned, dust or foreign matter on the surface to be cleaned is sucked in and removed through the suction brush.

The upright type vacuum cleaner is provided with a device for adjusting the height between the suction brush and the surface to be cleaned, such a height adjustment device is used in various ways such as lever type, knob type.

In the case of a lever type, an example is disclosed in Korean Patent Laid-Open No. 2001-0012060 that the user steps on and uses it. Such a lever type can be adjusted by stepping effortlessly because it is stepped on the foot, but the components can be complicated, and because the stepping on the foot, excessive force is applied to the height adjustment device may be damaged.

In the case of the knob type, an example is disclosed in Korean Patent No. 1986-0001635. This knob type is to adjust the height of the suction brush by raising and lowering the shaft supporting the front wheels of the cleaner by rotating the knob by hand, the user is easy to use, but the height of the suction brush is easily changed by external impact, etc., stable operation There is a problem that is difficult to expect. That is, by making a step on the lower surface of the knob, the shaft is moved up and down. When the suction brush hits a wall or an obstacle during cleaning, the knob is arbitrarily rotated to allow the user to lift and lower the shaft. The set height will change, and you will have to adjust the knob again.

The present invention has been made in view of the above, the suction brush of the upright type vacuum cleaner to improve the structure of the knob-type height adjusting device so that the user can easily adjust the height between the suction brush and the surface to be cleaned with a small force. The purpose is to provide a height adjustment device.

Still another object of the present invention is to provide a suction brush height adjusting device for an upright vacuum cleaner that can perform height adjustment step by step according to the state of the surface to be cleaned.

The height adjusting device of the upright vacuum cleaner according to the present invention for solving the above problems, the suction brush body; Height adjustment is rotatably installed in the seating portion provided in the suction brush body, a cam curve having a plurality of concave grooves between the starting point and the end point at a height difference between a portion of the end inserted into the suction brush body; Knob; A height adjusting shaft in contact with the cam curve, the rod member being integrally raised and lowered in accordance with the rotational direction of the knob; And a brush front wheel rotatably coupled to the height adjustment shaft.

According to a preferred embodiment of the present invention, the suction brush main body, the brush frame having a suction port for sucking dirt and dust on the bottom surface, the height adjustment shaft is installed; And a brush cover for sealing a portion other than the suction port.

And, the seating portion, a seating member installed on the brush frame; And a seating hole formed through the brush cover.

At this time, it is preferable that the seating member has a space portion in which a part of the outer circumferential surface is cut off so that elastic deformation is smooth in the circumferential direction.

And, the height adjustment knob, cylindrical knob body; A knob portion provided on an upper surface of the knob body and configured to rotate the height adjustment knob by a user; A flange portion protruding along an outer circumferential surface of the knob body to determine an insertion position of the body; A fixing protrusion seated in a fixing groove formed on an inner circumferential surface of the seating member to restrain the rotation of the handle part stepwise; And a cam curved portion rounded so that each of the concave groove portions is connected in a smooth curve.

At this time, the fixing projection is formed to protrude on the lower surface of the flange portion, the contact surface with the fixing groove is rounded.

In addition, the fixing grooves are formed in a plurality in the longitudinal direction of the seating member, it has a shape corresponding to the fixing projections, each of the fixing grooves is preferably spaced apart from each other at regular intervals.

In addition, the fixing groove may be formed in a number corresponding to the number of the concave groove portion of the cam curve.

The height adjustment shaft may be rotatably coupled to a shaft seating groove provided on the bottom surface of the brush frame.

At this time, the height adjustment shaft, the shaft body is coupled to the brush front wheel at both ends; Both ends are coupled to the shaft body, the rotating shaft is fixed to the shaft seating groove to rotate the height adjustment shaft; And a reinforcing rib installed between the shaft body and the rotating shaft to prevent torsion of the shaft body.

And, the shaft seating groove, connected to the front wheel receiving hole formed in the brush frame so that the front wheel does not interfere with the brush frame, a plurality of locking projections for preventing the departure of the height adjustment shaft; includes; Or, by supporting with a plurality of screws, it is possible to prevent the departure of the height adjustment shaft.

The height adjustment shaft may be made of aluminum.

Hereinafter, the height adjusting device of the upright vacuum cleaner according to a preferred embodiment of the present invention will be described with the accompanying drawings.

1 is a perspective view showing a general upright vacuum cleaner.

As shown, the upright vacuum cleaner generally includes a cleaning main body 100 having a driving motor (not shown) for generating a suction force, and a suction brush 200 which is rotatably installed at a lower side of the cleaning main body. ).

Inside the cleaning body 100 is provided with a filtering means and a waste container. Foreign matter sucked through the suction brush 200 by the suction force of the drive motor is filtered by the filtering means, and then collected in the waste container.

In addition, a handle 20 provided with an on / off switch 10 is provided at an upper portion of the cleaning main body 100. Therefore, when the user cleans while holding the handle 20 and moves the cleaner along the surface to be cleaned, dust or foreign matter on the surface to be cleaned is sucked in and removed through the suction brush 200.

2 to 4, the suction brush 200 includes a suction brush body 210, a height adjustment knob 300, a seating unit 400, and a height adjustment shaft 500.

The suction brush body 210 may include a brush frame 211 and a brush cover 212 that seals the brush frame 211 from an upper surface thereof. Brush wheels 213 are installed by wheel shafts 213 'on both sides of the brush frame 211, and suction ports 220 for sucking dust and dirt are provided on the bottom surface thereof. A rotating brush 221 is installed inside the suction port 220 to help clean the dust by scattering dust on the surface to be cleaned.

The height adjustment knob 300, as shown in Figure 5 and 6, is rotatably installed on the seating portion 400 formed in the suction brush body 210. In addition, a cam curve portion 311 is formed at a portion of the end portion inserted into the suction brush body 210. In other words, the height adjustment knob 300 is provided in the cylindrical knob body 310, the upper surface of the body 310, the user rotates the height adjustment knob 300, 320, Protruding along the outer circumferential surface of the body 310 is seated in the flange portion 330 and the fixing groove 411 formed on the inner circumferential surface of the seating portion 400 to determine the insertion position of the knob body 310, It includes; a fixing protrusion 340 for constraining the rotation of the handle portion 310 in stages.

The knob body 310 has a handle 320 which is gripped by the user directly on the upper surface of the flange portion 330, and a cam curve inserted into the brush body 200 on the lower surface of the knob body 310. The part 311 is formed. In addition, the fixing protrusion 340 is formed to protrude from the lower surface of the flange portion 330. At this time, the portion where the fixing protrusion 340 is in contact with the fixing groove 411 is rounded, so that the user does not have excessive force to rotate the height adjustment knob 300.

On the other hand, the cam curve 311 is formed to raise and lower the height adjustment shaft 500 to be described later, when the user rotates the height adjustment knob 300. The start point and the end point of the cam curve portion 311 are formed to have a predetermined height difference d, and are provided in an uneven shape having a plurality of concave groove portions 311a. The cam curve portion 311 is formed on a portion of the coupling end portion on which the height adjustment knob 300 is seated. As shown, it is preferably formed on half of the entire end surface. Due to the shape of the cam curve 311, the height adjustment knob 300 may rotate 180 degrees from the start point to the end point. On the other hand, as shown in Figure 7, the trajectory of the cam curve portion 311 is the first position (l) having the surface to be cleaned, the suction brush body 210 and the lowest height (L), and the highest height ( Has a second position h with H). The role of this uneven cam curve portion 311 will be described later with the height adjustment shaft (500).

The handle 320 is provided in the form of a date (一字) so that the user can be gripped comfortably, there is a marking (M) that can indicate the height of the current suction brush body 210 on one side. . Therefore, the height state mark displayed around the seat hole 420 of the brush cover 312 to be described later, the user can visually check the height between the suction brush body 210 and the surface to be cleaned.

The flange portion 330 is formed to protrude to a predetermined thickness along the outer circumferential surface of the knob body 310, by the flange portion 330, the insertion degree of the height adjustment knob 300 is determined. At this time, at least one fixing protrusion 340 is formed to protrude from the lower surface of the flange portion 330. According to a preferred embodiment of the present invention, one fixing protrusion 340 is the cam curved portion 311 It is preferable to be formed near the center of the side which is not formed.

The seating unit 400 is provided with a seating member 410 provided in the brush frame 211 and a seating hole 420 formed through the brush cover 212.

The seating member 410 is integrally formed with the brush frame 211 as shown. A fixing groove 411 is formed on the inner circumferential surface of the seating member 410. The fixing groove 411 is formed on the inner circumferential surface of the seating member 410, a plurality of grooves having a shape corresponding to the fixing protrusion 340 toward the lower surface from the upper surface of the inner circumferential surface. Preferably, the cam groove 311 may be provided in a number corresponding to the grooves 311a of the grooves 311a. That is, if seven concave grooves 311a of the cam curve portion 311 are provided, seven of the fixing grooves 411 are also provided on the inner circumferential surface of the seating member 410. And, each fixing groove 411 is spaced apart from each other at regular intervals to restrain the rotation of the height adjustment knob (300). In this case, the separation distance of each of the fixing grooves 411 is provided to be equal to the separation distance of each of the plurality of concave groove portions 311a of the cam curve portion 311.

In addition, a part of the inner circumferential surface of the seating member 410 is provided with a space portion 412 that is cut, which is the fixing protrusion 340 is the fixing groove 411 when the height adjustment knob 300 rotates. The elastic deformation of the seating member 410 to be separated from the inside is to be made more easily.

The seating hole 420 is formed to penetrate through the brush cover 312, and an indicator scale S indicating the height of the suction brush body 210 is provided around the mounting hole 420. Preferably, the indication scale S may be provided in seven steps, and each step may elevate the suction brush main body 210 to a predetermined size corresponding to the cam curve 311.

On the other hand, the brush frame 211 is provided with a height adjustment shaft 500. The height adjustment shaft 500 is in contact with the cam curve 311, the rod member 510 which is raised and lowered in accordance with the rotation direction of the height adjustment knob 300 is integrally formed.

According to a first preferred embodiment of the present invention, as shown in FIGS. 3A and 4A, the brush front wheels 520 are rotatably coupled to both bent ends of the height adjustment shaft 500. Therefore, when the height adjustment knob 300 is rotated, the height adjustment shaft 500 is raised and lowered in accordance with the rotation of the height adjustment knob (300). Then, when the height adjustment shaft 500 is raised and lowered, the position of the brush front wheel in contact with the surface to be cleaned is raised and lowered, and as a result, the suction brush body 210 is spaced apart from the surface to be cleaned. You get the effect.

The height adjustment shaft 500 is installed in the shaft seating groove 211a formed on the bottom surface of the brush frame 211, and is separated by a locking protrusion 211b protruding from the shaft seating groove 211a. This is avoided. At this time, the shaft seating groove 211a is connected to the front wheel receiving hole 211c formed in the brush frame 211 so that the front wheel 520 does not interfere with the brush frame 211. Therefore, the rod member 510 is formed integrally with the height adjustment shaft 500 in the vicinity of the front wheel receiving hole (211c), and therefore the cam curve portion 311 of the height adjustment knob 300 and Can be contacted.

Meanwhile, according to the second preferred embodiment of the present invention, as shown in FIGS. 3B and 4B, the height adjustment shaft 500 has a shaft body 501 to which the brush front wheels 520 are coupled at both ends. Both ends are coupled to the shaft body 501, the rotating shaft 502 is fixed to the shaft seating groove (211a) for rotating the height adjustment shaft (500); And a reinforcing rib 503 installed between the shaft body 501 and the rotation shaft 502 to prevent twisting of the shaft body 501.

At this time, the shaft seating groove 211a is connected to the front wheel receiving hole 211c formed in the brush frame 211 so that the front wheel 520 does not interfere with the brush frame, and a plurality of screws It is fixed by the 504 may prevent the departure of the height adjustment shaft 500.

On the other hand, the conventional material of the height adjustment shaft 500 was improved to the aluminum material that used a plastic or steel material. This is because when the plastic material is used to reduce the weight, the height adjustment shaft 500 does not endure the load of the cleaner and prevents it from breaking, and when it is made of steel to prevent the deformation of the height adjustment shaft 500 becomes heavy. It is an improvement.

Hereinafter, with reference to the accompanying drawings, the operation of the height adjusting device of the upright vacuum cleaner according to the present invention will be described.

As shown in FIG. 2, in order to adjust the height of the suction brush body 210, the height adjusting knob 300 is installed to be exposed to the seating hole 420 provided in the brush cover 212. This is for the user to easily grip the handle 310. On the other hand, around the seat hole 420 is provided with an indication scale (S) indicating the height between the current suction brush body 210 and the surface to be cleaned, this indication scale (S) is provided with a number as shown It may be, or may be represented by a geometric figure.

Therefore, as shown in the initial state, when the '0', the user wants to mark (M) the scale to space the suction brush body 210 and the surface to be cleaned at regular intervals for cleaning the carpet or carpet Rotate to point to the indicator scale (S). At this time, each of the indication scale (S) corresponds to each of the plurality of concave groove portion 311a formed in the cam curve portion 311 provided in the height adjustment knob 300, so that the user adjusts the height adjustment knob 300 When rotated, the rod member 510 integrally formed on the height adjustment shaft 500 in contact with the cam curved portion 311 is moved up and down along the cam curved portion 311.

That is, the rod member 510 adjusts the position of the brush front wheel 520 up and down while lifting and lowering along the cam curve portion 311 of the height adjustment knob 300. Therefore, as shown in FIG. 8, if the scale of the indication scale S at the first position l closest to the suction brush body 210 and the surface to be cleaned is '0', the user may adjust the height adjustment knob ( When the scale of the indication scale S is positioned at '6' by maximally rotating 300, as shown in FIG. 9, the second position h of which the height of the surface to be cleaned and the suction brush body 210 is farthest away The suction brush main body 210 can be elevated.

As such, the height adjustment knob 300 may be rotated and fixed at a constant scale because of the concave groove portion 311a provided in the cam curve portion 311. That is, although the start point and the end point of the cam curve portion 311 have a constant height difference, each scale has a concave groove portion 311a as shown in FIG. The rod member 510 is not detached from the rod member 510 even when the 510 is accommodated in the recess 311a and applied to the suction brush body 210. In addition, at least one fixing protrusion 340 provided on the outer circumferential surface of the height adjusting knob 300 is accommodated in the fixing groove 411 formed on the inner circumferential surface 410 ′ of the seating member 410. Thus, the height adjustment knob 300 is fixed to the position set by the first user to double. Therefore, if the user does not rotate the height adjustment knob 300 by a predetermined level or more, the height adjustment knob 300 can be arbitrarily rotated to prevent the distance between the suction brush body 210 and the surface to be cleaned changed. have.

According to the suction brush height adjusting device of the upright vacuum cleaner according to the present invention as described above, the user can adjust the height of the suction brush by a simple operation of rotating the height adjustment knob even with a small force, external impact, etc. Even if the height adjustment knob does not rotate arbitrarily, the height of the suction brush and the surface to be cleaned set by the user is not arbitrarily changed.

In addition, since the rotation of the height adjustment knob is divided step by step according to the state of the surface to be cleaned, it is possible to easily perform a cleaning operation from more various cleaning surfaces, such as a long hair carpet to a short hair carpet.

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. That is, those skilled in the art will appreciate that many changes and modifications can be made to the present invention 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.

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

Figure 2 is a perspective view showing a suction brush of the upright vacuum cleaner having a height adjusting device according to the present invention,

3A is a plan view showing the lower surface of FIG. 2 to show a height adjustment shaft according to a first preferred embodiment of the present invention;

3B is a plan view showing the lower surface of FIG. 2 to show a height adjustment shaft according to a second preferred embodiment of the present invention;

4A is an exploded perspective view of a suction brush of a vacuum cleaner including a height adjusting shaft according to a first embodiment of the present invention;

4B is an exploded perspective view of a suction brush of a vacuum cleaner including a height adjusting shaft according to a second preferred embodiment of the present invention;

5 is a front view of the height adjustment knob of FIG.

6 is a partially exploded perspective view showing a method of coupling the height adjustment knob of FIG.

7 is a graph showing the trajectory of the cam curve of the height adjustment knob of FIG.

8 is a side view showing the suction brush lowered to the lowest point by the height adjustment device according to the present invention, and

Figure 9 is a side view showing the suction brush is raised to the highest point by the height adjustment device according to the present invention.

<Description of Symbols for Major Parts of Drawings>

100; Upright cleaner 200; Suction brush

210; Suction brush body 211; Brush frame

211a; Shaft seating groove 211b; Jamming

211c; Front wheel receiving hole 212; Brush cover

213; Brushwheel 300; Height adjustment knob

311; Cam curve portion 310; Knob

320; Handle 330; Flange

340; Fixed protrusion 400; Seating part

410; A seating member 410 '; Mounting member inner circumference

420; Seating hole 500; Height adjustment shaft

501; Shaft body 502; Axis of rotation

503; Reinforcing ribs 510; Rod member

520; Brush front wheel

Claims (13)

Suction brush body; It is installed to rotate while being restrained step by step provided in the suction brush main body, the cam curve having a height difference between the starting point and the end point in a portion of the end inserted into the suction brush body, a plurality of concave grooves therebetween Formed height adjustment knob; A height adjusting shaft in contact with the cam curve, the rod member being integrally raised and lowered in accordance with the rotational direction of the knob; And Brush front wheel rotatably coupled to the height adjustment shaft; Suction brush height adjustment device of the upright vacuum cleaner comprising a. The method of claim 1, wherein the suction brush body, A brush frame having a suction port for sucking dirt and dust on a bottom thereof, and the height adjusting shaft being installed; And A brush cover for adjusting the suction brush height of the upright vacuum cleaner comprising a; a cover for sealing other than the suction port. The method of claim 2, wherein the seating portion, A seating member installed on the brush frame; And Suction brush height adjustment device of the upright vacuum cleaner comprising a; a mounting hole formed through the brush cover. The method of claim 3, wherein the seating member, Suction brush height adjustment device of the upright vacuum cleaner, characterized in that it has a space portion of the outer peripheral surface is cut so that the elastic deformation smoothly in the circumferential direction. The method of claim 3, wherein the height adjustment knob, Cylindrical knob body; A knob portion provided on an upper surface of the knob body and configured to rotate the height adjustment knob by a user; A flange portion protruding along an outer circumferential surface of the knob body to determine an insertion position of the body; A fixing protrusion seated in a fixing groove formed on an inner circumferential surface of the seating member to restrain the rotation of the handle part stepwise; And Suction brush height adjustment device of the upright type vacuum cleaner comprising a; rounded cam curved portion so that each of the concave grooves are connected in a smooth curve. The method of claim 5, wherein the fixing projections, Protruding on the lower surface of the flange portion, the suction brush height adjustment device of the upright type vacuum cleaner, characterized in that the contact surface with the fixing groove is rounded. The method of claim 5, wherein the fixing groove, The suction member of the upright type vacuum cleaner is formed in the longitudinal direction of the seating member, having a shape corresponding to the fixing projections, each of the fixing grooves are spaced at regular intervals from each other. The method of claim 5, wherein the fixing groove, Suction brush height adjustment device of the upright type vacuum cleaner, characterized in that formed in the number corresponding to the number of the recessed groove portion of the cam curve. The method of claim 2, wherein the height adjustment shaft, Suction brush height adjustment device of the upright vacuum cleaner, characterized in that rotatably coupled to the shaft seating groove provided on the bottom surface of the brush frame. The method of claim 9, wherein the height adjustment shaft, A shaft body to which brush front wheels are coupled at both ends; Both ends are coupled to the shaft body, the rotating shaft is fixed to the shaft seating groove to rotate the height adjustment shaft; And And a reinforcing rib installed between the shaft body and the rotating shaft to prevent torsion of the shaft body. The method of claim 9, wherein the shaft seating groove, An upright type vacuum, characterized in that it is connected to the front wheel receiving hole formed in the brush frame so that the front wheel does not interfere with the brush frame, and a plurality of locking projections for preventing the height adjustment shaft from being separated. Suction brush height adjustment device of the vacuum cleaner. The method of claim 9, wherein the shaft seating groove, In order to prevent the front wheel from interfering with the brush frame, connected to the front wheel receiving hole formed in the brush frame, it is supported by a plurality of screws to prevent the separation of the height adjustment shaft of the upright vacuum cleaner Suction brush height adjustment device. The method of claim 9, wherein the height adjustment shaft, Suction brush height adjusting device of the upright vacuum cleaner, characterized in that the aluminum material.