CN1608567A - Bendable suction brush for a vacuum cleaner - Google Patents

Abstract

A suction brush assembly, which is connected with a body of a vacuum cleaner via an air passage, draws in air and dust from a surface to be cleaned. A bendable suction brush is provided that includes a brush body connected with the air passage, and a plurality of movable frames each with a suction passage to draw in the air and dust. The frames are formed on the brush body in a movable manner so as to rotate via an external force to a predetermined angle with respect to the brush body. At least one front frame overlaps portions of the plurality of movable frames to cover an open end of the brush body.

Description

Bendable brushes for vacuum cleaners

related application

This application claims priority from Korean Patent Application No. 2003-73787 filed with the Korean Intellectual Property Office on October 22, 2003, the disclosure of which is incorporated herein by reference in its entirety.

Refer to related application

This application is related to a co-pending application entitled "Dust suction brush assembly with rotating roller for sweeping dust" (Korean Patent Application No. 2002-11240, filed on March 4, 2002).

technical field

The present invention relates to a vacuum cleaner, and in particular, a vacuum cleaner brush which is bendable to facilitate cleaning of small areas such as crevices and corners between walls.

Background technique

Figures 1 and 2 show a conventional bendable vacuum brush. In particular, FIG. 1 is a plan view showing the structure of a conventional bendable dust collection brush, and FIG. 2 shows positions of left and right sides of the conventional bendable dust collection brush during cleaning of corners.

Most of the bendable cleaning brushes include a central body 1 connected to a suction pipe (not shown) of a vacuum cleaner, left and right bodies 2 and 2' formed on both sides of the central body 1, each of which can be wound around The rotation of the central body 1 , and the springs 3 and 3 ′, bias the left and right bodies 2 and 2 ′ to align the left and right bodies 2 and 2 ′ with each other, see FIG. 2 .

The central body 1 has a suction opening 11 through which air and dust are sucked in, a T-shaped guide slot (not shown) formed on the side of the central body 1 to guide the rotation of the left and right bodies 2 and 2', and also The left and right bodies 2 and 2' can be reliably supported relative to the central body 1, and a spring guide hole (not shown) allows one end of the springs 3 and 3' connected to the left and right bodies 2 and 2' respectively rotation is easier.

Both the left and right bodies 2 and 2' have a protruding guide formed on one side to connect to the guide groove 12, spring connection grooves 24 and 24' are respectively formed on the upper end, springs 3 and 3' cooperate with it, and suction Grooves 21 and 21 ′, respectively, are formed in the lower centers of the left and right bodies 2 and 2 ′ to guide dust toward the suction opening 11 of the center body 1 . Sealing layers 23 and 23' are formed at the lower ends of the protruding guides 22 and 22', respectively, to prevent suction loss at the joint of the central body 1.

First, second and third protrusions 14, 14', 14" are formed on the lower surface of the central body 1, wherein a certain side of the second and third protrusions 14' and 14" is in contact with the suction grooves 21 and 21' parallel (see FIG. 1), and the first protrusion 14 is spaced apart from the second and third protrusions 14' and 14". In addition, protrusion segments 15 and 15' are formed on the first and second protrusions 14 and 14, respectively. ', it brings the sealing layer 23' of the right body 2' and the sealing layer 23 of the left body 2 into contact with the first and third protrusions 14 and 14". As a result, each sealing layer 23 and 23' has a different radius of rotation.

Sealing layer guides 23" are formed on the upper surfaces of the sealing layers 23 and 23', and sealing layer guide grooves 17 and 17' cooperate with the sealing layer guides 23" and are formed on the lower surface of the central body 1 with different radii , thereby facilitating the rotation of the sealing layers 23 and 23'.

The spring 3 includes two torsion springs, one end of which cooperates with the spring connection grooves 24 and 24' of the left and right bodies 2 and 2', and the other end is fixed to the central body 1. Correspondingly, the springs 3 and 3' provide the left and right bodies 2 and 2' with restoring force, which is generated by contact with an external object, such as furniture or a wall.

A conventional vacuum brush mainly includes a central body 1 and its left and right bodies 2 and 2', which rotate around the central body 1 to be able to clean crevices or corners between walls. However, such conventional vacuum brushes are often difficult to use with conventional suction pipes and for large cleaning areas because the left and right bodies 2 and 2' are not extensible. In addition, since the springs 3 and 3' are located close to the suction end 11, the movement of the springs is aggravated by the suctioned dust during use of the suction brush.

Contents of the invention

The present invention has been developed to solve the above-mentioned disadvantages and other problems of conventional vacuum cleaners. Accordingly, it is an object of the present invention to provide an improved flexible brush for vacuum cleaners which facilitates cleaning of crevices and corners and which is retractable according to the user's choice of length to allow cleaning of various areas. variety of surfaces, including a large cleaning area.

The aforementioned objects can basically be achieved by a flexible suction brush of a suction brush assembly, which is connected to the main body of the vacuum cleaner through an air line which sucks air and dust from the surface to be cleaned. The bendable vacuum brush includes a brush body connected with an air line, a plurality of movable frames with suction lines for sucking in air and dust, and formed on the brush body in a movable manner rotate at a predetermined angle relative to each other; and at least one front frame exposed between a plurality of movable frames, the movable frame moves to a rotational position under the action of an external force, and the front frame is folded in a plurality of movable Move between frames to cover open ends.

The brush body has a base on which the movable frame is mounted about its axis of rotation, a base cover connected to the base to guide the rotation of the movable frame, and a connecting pipe rotatably located between the base and the base cover.

Each of the plurality of movable frames includes a brush frame mounted about the axis of rotation, an extended brush guide formed at one end of the brush frame, and an extended brush movably mounted to slide along the length of the brush frame . A plurality of movable frames are formed in pairs in a symmetrical manner, and are relatively located on the left and right sides of the brush body.

The suction line has a first duct formed on the brush frame, a second duct formed on the extended guide frame, and a third duct formed on the extended brush. The first duct has a connecting duct which connects with the second and third ducts and forms a suction line, and a circular duct which forms an arc around the hinge part which secures around the axis of rotation and the circular duct is connected to the base.

The extension brush includes spaced lock holes formed on the extension brush at predetermined intervals, and locking protrusions formed on the brush frame to be sealed in the spaced lock holes.

A plurality of movable frames are mounted on the brush body together with elastic elements, and when rotated under the action of an external force, return to the original configuration when the external force is removed. The elastic element is a torsion spring attached to the movable frame.

The multiple movable frames rotate between approximately 40 and 50 degrees.

The connecting pipe has a ball joint, and a guide ring is placed on the outer circumference of the ball joint and installed in a guide groove formed in the brush body. Accordingly, the connecting pipe is rotatable.

The front frame has a front frame body with a secondary conduit and a front frame cover mounted on the upper side of the front frame.

The flexible suction brush of the suction brush assembly is connected to the main body of the vacuum cleaner and is in fluid communication with it through a predetermined air line to draw ambient air and dust from the cleaning surface. The flexible suction brush consists of a brush body, connected to an air line, a plurality of longitudinally extendable mobile frames, whose suction lines suck in air and dust, the frames are provided in pairs, located opposite each other on the left side of the brush body and the right side are rotated to a predetermined angle relative to the brush body, and at least one front frame is folded between a plurality of movable frames that can rotate under the action of external force.

A plurality of longitudinally extendable mobile frames are located on the brush body together with the elastic elements, and when rotated under the action of an external force, return to the original configuration when the external force is removed. The elastic element may be a torsion spring connected to a plurality of longitudinally extendable mobile frames.

Description of drawings

The above-mentioned aspects and features of the present invention will become apparent by describing the embodiments of the present invention with reference to the accompanying drawings.

FIG. 1 is a plan view showing the structure of a conventional flexible dust-absorbing brush;

2 is a plan view showing a left body and a right body of a conventional flexible suction brush in a rotating position for cleaning a crevice;

FIG. 3 is an exploded perspective view of a bendable cleaning brush for a vacuum cleaner according to one embodiment of the present invention;

Fig. 4 is a partial perspective view of the extension brush of the suction brush shown in Fig. 3, the extension brush being in a non-extended position;

Figure 5 is a partial perspective view of the extension brush shown in Figure 4, with the extension brush in an extended position;

Fig. 6 is the front perspective view of the dust-absorbing brush shown in Fig. 3, and the brush is combined with the cover (omitted among the figures) at this moment;

Figure 7 is a front perspective view of the suction brush shown in Figure 6, with the brush in a bent position;

Fig. 8 is a front view of the dust suction brush shown in Fig. 6;

Figure 9 is a rear perspective view of the suction brush shown in Figure 7, with the brush in a flexed position, in accordance with one embodiment of the present invention; and

Figure 10 is a top perspective view of the cleaning brush shown in Figure 3 with the combined cleaning brush in a bent position and in contact with the wall of the cleaning surface.

Detailed ways

In the following description, the same figure reference numerals are used to denote the same elements even in different figures. Matters explained in the description, such as detailed construction and elements are only for comprehensive understanding of the present invention. Thus, it is apparent that the present invention can be carried out without these illustrated problems. Also, well-known functions or constructions are not described in detail.

FIG. 3 is an exploded perspective view of a cleaning brush 100 of a vacuum cleaner according to an embodiment of the present invention. The cleaning brush 100 includes a base 110 , a movable frame 200 and a base cover 300 . The base 110 and the base cover 300 cooperate with each other to form a brush body. In this embodiment, the movable frame is formed as two substantially identical parts in a symmetrical relationship, however, only a portion of the movable frame 200 on one side of the frame 100 is depicted.

The base 110 is connected to the movable frame 200, and the sealing member 111 is connected to the lower side thereof to define a space A therein (FIG. 3). Space A allows air to flow from the movable frame 200 to an extension tube (not shown). A guide duct 112 a , connected to a suction line of the movable frame 200 , is formed in front of the base 110 . The guide duct 112a is connected to the space A through the suction hole 112b.

The space A is in fluid communication with the main body of the vacuum cleaner through a connection pipe 114 connected to the base 110 . The connecting pipe 114 has a ball joint 114a whose guide ring 114b is adapted to fit in a guide groove 110a formed in the base 110 and the base cover 300 .

A rotation shaft 115 engaged with the movable frame 200 protrudes from the base 110 . The elastic member 116 is engaged with the rotating shaft 115 and the movable frame 200 . Resilient elements 116 bias the movable frame toward a linear or vertical position.

The movable frame 200 includes a brush frame 201 rotatably engaged with the base 110, an extended brush guide 202 formed at one end of the brush frame 201, and an extended brush 203 extending along the length direction of the brush frame 201. It can be swipe to move. The brush frame cover 201 and the extension base cover 203' are engaged with the upper part of the movable frame 200. The suction line is integrally formed in the movable frame 200 (FIG. 3), and includes a first duct 210 formed in the brush frame 201, a second duct 202a formed in the extended brush guide 202, and a third duct 203a, Formed in the extended brush 203.

The brush frame 201 includes a frame hinge 115a engaged with the axis of rotation 115, and an extension brush guide 202, the end of which is adapted for sliding engagement with the extension brush 203. The brush frame 201 also includes a first duct 210 integrally formed therein and connected to the second and third ducts 202a and 203a. The first duct 210 may have a circular duct 201b formed around the connecting duct 201a connected to the second and third ducts 202a and 203a and around the frame hinge 115a. When the movable frame 200 is in a non-rotating or vertical position, the circular duct 201b forms a generally circular shape.

The extension brush guide 202 guides the sliding movement of the extension brush 203, and may be integrally formed with the connection duct 201a. The extension brush guide 202 is sized to fit the extension brush 203 such that the extension brush 203 does not stick out of the guide 202 when sealed to the connecting duct 201a. The extended brush guide 202 prevents possible suction loss due to extension of the brush 203 in the longitudinal direction, and the second duct 202a formed in the main body of the guide 202 maintains a predetermined suction force in the first and third ducts 210 and 203a .

The extension brush 203 can be extended longitudinally according to the needs of the user. Referring to FIGS. 4 and 5, the extension brush 203 is telescopic by cooperation of locking protrusions 202h formed on the extension brush guide 202 and corresponding locking holes 203h formed in the extension brush 203 at predetermined intervals. The locking protrusion 202h is integrally formed with the extension brush guide 202, and is elastically deformable. Locking holes 203h are formed in the extension brush 203 at predetermined intervals, and when the locking protrusion 202h is fitted in one of the locking holes 203h, the movement of the extension brush 203 in the longitudinal direction is restricted.

Besides, the flexible cleaning brush 100 for a vacuum cleaner is made of soft material, such as plastic obtained by injection molding. Accordingly, when an external force is applied, such as a user's push, the locking protrusion 202h elastically deforms and moves out of the locking hole 203h, allowing the brush 203 to elongate in the longitudinal direction.

Figures 3, 6 and 7 show a flexible vacuum brush 100 from which the brush frame cover 201' and the extended base cover 203' have been omitted. The front frame 220 is connected to the upper side of the circular duct 201b to prevent loss of suction force of the circular duct 201b during rotation of the movable frame 200 .

The front frame 220 includes a front frame body 221 having a secondary pipe 220 , and a front frame cover 222 formed on the upper side of the front frame body 221 . The front frame body 221 has the same circumference and width as the circular duct 201b to include the circular duct 201b from above. The front frame body 221 is engaged with the rotation shaft 115 through the front frame hinge 115c.

The base cover 300 is engaged with the base 110 and limits the rotation angle of the movable frame 200 , and also supports the connection pipe 114 together with the base 110 . The movable frame 200 also rotates within an angle range of about 40 degrees to 50 degrees, as shown in FIG. 10 . Base cover 300 is generally annular. When the rotational movement of the movable frame 200 is restricted by the inclined surface S in contact therewith, the rotational angle of the movable frame 200 may be adjusted by controlling the angle between the left and right inclined surfaces S. FIG.

operate

The bendable suction brush 100 according to the present embodiment is extendable over a cleaning area by pulling out the extension brush 203 . In other words, when the user pulls out the extension brush 203 in the longitudinal direction, the locking protrusion 202h of the extension brush guide 202 moves out of the corresponding locking hole 203h of the extension brush 203 and moves into the adjacent locking hole 203h. By extending the extension brush 203 in the longitudinal direction through the above process, the user can clean a large area in a relatively short time.

To clean small areas, such as crevices or corners between adjacent walls W, the user simply proceeds towards the wall W without turning the brush. As shown in FIGS. 9 and 10 , the bendable cleaning brush 100 bends at the movable frame 200 by contacting the wall W. As shown in FIG. Since the front frame 220 is connected to the upper surface of the movable frame 200 to prevent the loss of the suction line, the air sucked through the second and third ducts 202a and 203a flows to the base 110 through the circular duct 201b and the secondary duct 220a. The front frame 220 covers the circular duct 201b from above and is spaced apart from the cleaning surface by a predetermined distance. Correspondingly, when the front frame 220 is exposed, the generally vertical opening defined between the front frame 220 and the cleaning surface is equivalent to a suction port on the front side of the cleaning brush 100, sucking air and dust from the gap. Even when the movable frame 200 is bent at a predetermined angle by the front frame 220, the suction line of the circular duct 201b maintains its original configuration, thereby substantially eliminating suction loss, which would otherwise occur when the suction line is bent. phenomenon.

With the bendable vacuum cleaner described above, the cleaning operation is performed more efficiently, even when cleaning a small area such as a crevice, because the movable frame can bend according to the shape of the crevice.

Accordingly, since the user can extend and shorten the length of the brush, the suction area is widened, thereby reducing cleaning time when cleaning wide surfaces.

The foregoing embodiments and advantages are merely illustrative and should not be considered as limiting the invention. This embodiment can be easily applied to other types of devices. The description of the embodiments of the present invention is illustrative and does not limit the scope of the claims, and many schemes, modifications and changes will be apparent to those skilled in the art.

Claims (15)

1. the bendable suction brush of a dust-absorbing brushes assembly is connected with vacuum cleaner main body by air pipe line, and from surperficial inspiration ambient air that is cleaned and the dust of carrying secretly, described bendable suction brush comprises:

Brush body is connected with air pipe line;

A plurality of movably frameworks, described movably framework comprises the suction line of suck air and dust, and each framework all is formed on the brush body in a movable manner to rotate with respect to brush body around rotating shaft, framework rotates under the effect of external force; And

At least one front baffle, the part crossover of front baffle and a plurality of removable frameworks is to cover the openend of brush body.

2. bendable suction brush according to claim 1, wherein brush body comprises:

Base with rotating shaft, removable framework is provided with around its rotating shaft;

Base cover links to each other to guide the rotation of removable framework with base; And

Tube connector can be rotatably set between base and the base cover.

3. bendable suction brush according to claim 1, each in wherein a plurality of removable frameworks all comprises:

The brush frame is around the rotating shaft setting;

Prolong the brush guiding piece, be formed on the end of brush frame; And

Prolong brush, be provided with movably to slide along the length of brush frame.

4. bendable suction brush according to claim 3, wherein a plurality of movably frameworks form in pairs with symmetrical manner, are formed on the opposite side of brush body.

5. bendable suction brush according to claim 3, wherein suction line comprises:

First pipeline is formed in the brush frame;

Second pipeline is formed in the prolongation guiding frame; And

The 3rd pipeline is formed in the prolongation brush.

6. bendable suction brush according to claim 5, wherein first pipeline comprises:

Connecting pipe is connected with the 3rd pipeline with second, and limits suction line betwixt; And

Circular pipe forms arc around hinge fraction, and hinge fraction connects around rotating shaft, and circular pipe is connected to base.

7. bendable suction brush according to claim 3 wherein prolongs brush and comprises:

Lockhole at interval is formed in the prolongation brush with predetermined interval; And

Latch protrusion is formed on the brush frame and is held with the lockhole that is spaced apart.

8. bendable suction brush according to claim 1, wherein a plurality of removable frameworks are arranged on the brush body and external force when removing the spring member biases framework to initial construction.

9. bendable suction brush according to claim 8, wherein flexible member is a torsion spring, described torsion spring is connected to a plurality of removable frameworks.

10. bendable suction brush according to claim 1, the rotation between about 40 to 50 degree of wherein a plurality of removable frameworks.

11. bendable suction brush according to claim 2, wherein tube connector comprises:

Ball-joint; And

Lead ring is arranged on the periphery of ball-joint and is installed in the guide groove that is formed in the brush body.

12. bendable suction brush according to claim 1, wherein front baffle comprises:

Front frame body, it has secondary pipeline; And

Front baffle covers, and is arranged on the upside of front baffle.

13. the bendable suction brush of a dust-absorbing brushes assembly is connected with the body fluid of vacuum cleaner communicatively by air pipe line, and sucks air and dust from the clean surface, described bendable suction brush comprises:

Brush body is connected with air pipe line;

A plurality of vertically extensible mobile frameworks, each all has the suction line that sucks air and dust mobile framework, and vertically extensible mobile framework is arranged in pairs in the opposite side of brush body and rotates around rotating shaft with respect to brush body under the effect of external force; And

At least one front baffle overlaps to cover the openend of brush body with the part of a plurality of removable frameworks.

14. bendable suction brush according to claim 13, wherein a plurality of vertically extensible mobile frameworks are arranged on the brush body with flexible member, and flexible member overcomes external force bias voltage framework to initial construction.

15. bendable suction brush according to claim 13, wherein flexible member is a torsion spring, and described torsion spring is connected to a plurality of vertically extensible mobile frameworks.

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