KR20080033048A - A nozzle assembly having a sub-brush unit - Google Patents

Abstract

A nozzle assembly with a sub brush unit is provided to increase life span of the sub brush unit by selectively maintaining the contact or non-contact status with a surface to be cleaned. A nozzle assembly with a sub brush unit comprises a nozzle main body(2), a drum brush unit(5), and sub brush unit(10). The drum brush unit installed at the nozzle main body has a drum brush(28) for sweeping impurities on a surface to be cleaned by rotating in the surface to be cleaned. The sub brush unit, which is placed at one of the nozzle main body and the drum brush unit, has sub brushes for preliminarily sweeping the impurities on the surface to be cleaned. The sub brush unit selectively maintains contact or non-contact status with the surface to be cleaned, and includes a sub brush member(11), bracket members(13) whose one side is connected to the nozzle main body, and link members connecting the bracket members with the sub brush member. The sub brush member selectively maintains the contact or non-contact status with the surface to be cleaned.

Description

Nozzle assembly having a sub-brush unit

1 is a perspective view showing a nozzle assembly of a vacuum cleaner according to a first embodiment of the present invention;

Figure 2 is a perspective view of the nozzle assembly of Figure 1 inclined from the bottom,

3 is a perspective view illustrating only the auxiliary brush unit of FIG. 1;

4 is a perspective view showing a modification of the protrusion of the auxiliary brush shown in FIG.

5 is a perspective view showing another modified example of the protrusion of the auxiliary brush shown in FIG.

6 is a cross-sectional view of the hook of the anti-rotation part of the auxiliary brush unit shown in FIG.

7 is a cross-sectional view showing a modification of the hook of FIG.

8 is a side view illustrating only the guide guide member and the second hinge shaft, the right bracket and the right link of the auxiliary brush member in the state in which the auxiliary brush member is folded in the nozzle assembly shown in FIG. 1;

9 is a side view illustrating the nozzle assembly of FIG. 1 in a state in which the auxiliary brush member is folded;

10 is a side view showing only the guide guide member and the second hinge shaft, the right bracket and the right link of the auxiliary brush member in the state in which the auxiliary brush member is opened in the nozzle assembly shown in FIG. 1;

11 is a side view showing the nozzle assembly of FIG. 1 in a state in which the auxiliary brush member is opened;

12 is a perspective view of a nozzle assembly of a vacuum cleaner according to a second embodiment of the present invention;

FIG. 13 is a perspective view illustrating the upper casing of the auxiliary brush unit of the nozzle assembly shown in FIG.

FIG. 14 is a side view illustrating a cleaning state in which the auxiliary brush unit of the nozzle assembly illustrated in FIG. 12 is in contact with a surface to be cleaned;

15 is a schematic cross-sectional view for explaining the operation of the left and right brackets of the nozzle assembly in the state shown in FIG.

16 is a schematic cross-sectional view showing the left and right brackets with the auxiliary brush unit rotated about 45 degrees in the use state of the nozzle assembly shown in FIG. 14;

FIG. 17 is a side view illustrating a state in which the auxiliary brush unit of the nozzle assembly of FIG. 12 is rotated to form an angle of about 90 degrees with the surface to be cleaned;

18 is a schematic cross-sectional view for explaining the operation of the left and right brackets in the state of FIG.

19 is a perspective view showing a nozzle assembly of a vacuum cleaner according to a third embodiment of the present invention;

20 is a nozzle assembly shown in FIG. 19, a perspective view taken along the line XX-XX of FIG.

FIG. 21 is a nozzle assembly shown in FIG. 19, taken along line XXI-XXI in FIG. 19, FIG.

FIG. 22 is a nozzle assembly shown in FIG. 19, wherein the auxiliary brush unit is rotated and positioned at an upper portion of the drum brush casing (non-use position);

FIG. 23 is a nozzle assembly shown in FIG. 19, wherein the auxiliary brush unit is separated from the drum brush unit. FIG.

24 is a perspective view illustrating a nozzle assembly of a vacuum cleaner according to a fourth embodiment of the present invention;

FIG. 25 is a nozzle assembly shown in FIG. 24, wherein the auxiliary brush unit is rotated and positioned at an upper portion of the drum brush casing (non-use position);

26A, 26B, and 26C are partial cross-sectional views for describing the operation of the nozzle assembly shown in FIG. 24;

     27 is a perspective view of a bottom of the nozzle assembly shown in FIG. 24;

    FIG. 28 is a perspective view illustrating a bottom surface of the auxiliary brush casing of the auxiliary brush unit of the nozzle assembly shown in FIG. 27;

    29 is a perspective view illustrating an upper surface of an auxiliary brush of the auxiliary brush unit of the nozzle assembly shown in FIG. 27;

    30 is a partial cross-sectional view showing a picker attached to the bottom surface of the auxiliary brush shown in FIG. 29;

    FIG. 31 is a perspective view illustrating a hinge bracket hinged to the auxiliary brush casing of FIG. 27;

     32 is a perspective view of the hinge bracket shown in FIG. 31, and

    FIG. 33 is a perspective view showing a hinge screw for hinge fixing the link member of the hinge bracket shown in FIG.

* Explanation of symbols for the main parts of the drawings *

1, 1 ', 1 ", 1"' ... Nozzle Assembly 2 ... Nozzle Body

5 ... Drum Brush Unit 10, 110, 210, 310 ... Auxiliary Brush Unit

13, 14, 180 ... Left / Right Bracket 15,16 ... Left / Right Link

21 Hooks 22, 144, 172 Elastic members

23. Left / right guide groove 25 ... Guide member

30, 190, 276, 376 ... Subsidiary brush 30a ... protrusion

150: frame member 170: cam member

260: locking unit 262: hook member

274, 374; panel

The present invention relates to a vacuum cleaner, and more particularly, to a nozzle assembly of a vacuum cleaner in contact with a surface to be cleaned, into which dirt or air is sucked.

In general, a vacuum cleaner is provided with a nozzle assembly capable of sucking dirt on the surface to be cleaned. The nozzle assembly sucks dust or dirt from the surface to be cleaned by using the suction force generated by the suction motor installed inside the cleaner body in contact with the surface to be cleaned.

However, among these conventional nozzle assemblies, in particular, the nozzle assembly which is applied to an upright type vacuum cleaner is provided with a drum brush unit to shake off dirt on the surface to be cleaned, especially the carpet. A nozzle assembly including a drum brush unit disclosed in the related art is disclosed in Japanese Laid Open Patent JP 4132529, German Laid-Open Patent DE 19602406, Korean Laid-Open Patent Publication No. 2004-75569, and the like. In the conventional nozzle assembly disclosed, the drum brush is rotatably coupled to the cleaner body to shake off the dirt on the carpet by striking the dirt on the surface to be cleaned inside the air suction port. The drum brush is rotated using the kinetic energy of the motor or the inflowing air installed in the nozzle assembly, and the brush member or the blade protruding from the circumferential surface of the drum brush rotates in contact with the surface to be cleaned and strikes the surface to be tangentially )do. When the drum brush hits the dirt-bearing portion of the surface to be cleaned, the dirt is scattered from the surface to be cleaned and the scattered dirt flows into the nozzle assembly.

However, there is a problem that the surface to be cleaned, especially hair or hair, which is firmly attached to the surface of the carpet, does not fall well with only the drum brush. When the drum brush rotates, the surface to be cleaned is tangentially struck, but its strength is weak, and when a long and thin dirt such as hair is wound around the cilia of the carpet, the drum brush that rotates and hits the surface of the carpet does not separate them from the carpet. Therefore, in this case, there is a conventional inconvenience that the user has to remove the hair from the carpet by hand or use a tool such as a comb to clean the carpet again.

The present invention has been made to solve the above problems, an object of the present invention is to provide a nozzle assembly of a vacuum cleaner that can separate not only dust or dirt firmly attached to the surface to be cleaned, but also hair or animal hair. There is.

Another object of the present invention is to provide a nozzle assembly capable of selectively contacting the auxiliary brush unit with the bottom when and when the use of the auxiliary brush unit is necessary.

Still another object of the present invention is to provide a nozzle assembly of a vacuum cleaner, in which the use of the auxiliary brush unit is convenient and maintenance is easy.

Further, another object of the present invention is to provide a nozzle assembly of a vacuum cleaner in which the auxiliary brush unit is in good contact with the surface to be cleaned even if the surface to be cleaned is curved.

The nozzle assembly of the vacuum cleaner of the present invention for achieving the above object is installed in the nozzle body, the nozzle body, the drum brush unit is installed in contact with the surface to be cleaned and the drum brush to shake off the dirt on the surface to be cleaned And it is installed on the nozzle body or drum brush unit, characterized in that it comprises an auxiliary brush unit having an auxiliary brush for preliminarily brushing off the dirt on the surface to be cleaned. In this way, by providing the nozzle body or the auxiliary brush unit for brushing the dirt preliminarily to the drum brush unit, the nozzle assembly can be efficiently cleaned of hair on the carpet and the like.

Here, the auxiliary brush unit is rotatably connected to the nozzle body or the drum brush unit, it is preferable to maintain a contact or non-contact state with the surface to be cleaned optionally. Therefore, it is possible to selectively use the auxiliary brush unit when cleaning the floor and carpet or bedding.

According to one embodiment of the present invention, the auxiliary brush unit is installed in the nozzle body, the auxiliary brush member that can selectively maintain the contact or non-contact state with the surface to be cleaned, the bracket member connected to one side to the nozzle body, and the bracket member and It includes a link member for connecting the auxiliary brush member. Here, the link member is rotatably connected to the bracket member and the auxiliary brush member.

In addition, the auxiliary brush unit may further include a guide guide member for connecting the auxiliary brush member and the bracket member, the bracket member is formed with a guide groove, one end of the guide guide member is inserted into the guide groove to move the auxiliary It can be configured to vary the position of the brush member.

In addition, the anti-rotation part is provided in the bracket member, it can be configured to include a hook member for suppressing the rotation of the link member to the surface to be cleaned, and a stopper for suppressing rotation in the opposite direction to the surface to be cleaned.

In addition, the auxiliary brush member may be coupled to the auxiliary brush casing rotatably connected to the link member, and the auxiliary brush casing, and may include an auxiliary brush capable of maintaining contact or non-contact state with the surface to be cleaned. Here, the auxiliary brush may be configured to be detachable from the auxiliary brush casing, and the auxiliary brush may include a plurality of protrusions protruding toward a surface to be cleaned.

According to another embodiment of the present invention, the nozzle assembly includes left and right brackets protruding forward from both front sides of the drum brush unit, and the auxiliary brush unit may be connected to the left and right brackets.

The auxiliary brush unit may include a frame member rotatably coupled to the drum brush unit, an upper casing surrounding the frame member from the top, and a frame member wrapped from below, and a lower casing combined with the upper casing, and detachable to the bottom of the lower casing. It can be configured to include an auxiliary brush coupled to the upper, and the upper and lower casing, it can be configured to be able to move up and down with respect to the drum brush unit.

The frame member may include a frame body, a frame key protruding downward from the bottom of the frame body, a frame shaft protruding to both sides of the frame body, and an uneven portion provided at each end of the frame shaft.

The left and right brackets are each formed with a long hole formed in the horizontal direction, and may further include a first elastic member inserted into the long hole, and a cam member engaged with the uneven portion of the frame member.

Keys protrude from the inner wall of the long hole, key grooves are formed in the cam member, and the cam member is configured to perform horizontal movement with respect to the rotational movement of the frame member, and a boss into which the frame key of the frame member is inserted into the lower housing Is formed, and a second elastic member may be provided inside the boss.

According to another embodiment of the present invention, the nozzle assembly is preferably installed in the drum brush unit, it further comprises a locking unit for selectively fixing the auxiliary brush unit. Therefore, when the auxiliary brush unit is not temporarily used, the auxiliary brush unit can be rotated, and when the auxiliary brush unit is used, it can be fixed by the locking unit.

In addition, the drum brush unit may include a drum brush and a drum brush casing surrounding the drum brush, and the auxiliary brush unit may be configured to be coupled or separated from the drum brush casing.

The locking unit includes an auxiliary brush unit and a hook member to be locked, and a spring for urging the hook member upward, and the auxiliary brush unit includes an auxiliary brush casing, a panel coupled to the lower end of the auxiliary brush casing, and a bottom of the panel. An auxiliary brush coupled to the auxiliary brush casing is configured to be selectively locked with the hook member of the locking unit.

In addition, the panel is elastically movable relative to the auxiliary brush casing and can be rotated. To this end, the panel has a plurality of bosses formed on the upper surface and each containing a spring, and a support shaft rotatably supported in the long hole formed at both ends and formed in the auxiliary brush casing. The auxiliary brush has a plurality of protrusions protruding to the bottom.

In addition, the nozzle assembly has at least one bracket installed on the drum brush casing, the auxiliary brush casing is provided with a cover arm rotatably coupled to the bracket, the bracket can be configured to be installed and removable on the drum brush casing. have.

In addition, the drum brush casing may be provided with a slide rail, the bracket may be provided with a slide groove coupled to the slide rail.

According to another embodiment of the present invention, the auxiliary brush unit is configured such that the panel can move back and forth and in the horizontal direction with respect to the auxiliary brush casing. To this end, the auxiliary brush unit may include at least one hinge bracket installed between the panel and the auxiliary brush casing and hinged to fix the panel to the auxiliary brush casing in a horizontal direction. The hinge bracket is composed of a link member having a body fixed to the high information formed on the lower surface of the auxiliary brush casing, and at least one link hinged to the body and the panel by a hinge screw. At this time, the hinge screw preferably has an end portion rotatably supported at hinge holes formed at both ends of the link, and a screw portion screwed to the body or panel.

The auxiliary brush consists of a picker attached to the bottom of the panel and formed of cloth, fibers or wool with a lint. At this time, the picker is preferably formed so that the lint portion is inclined in one direction, for example, toward the drum brush unit. In this case, in order to ensure that the grain of the lint part is accurately positioned during manufacture, a first alignment part is installed between the panel and the picker to align the position of the picker with respect to the panel, and between the auxiliary brush casing and the panel is attached to the auxiliary brush casing. A second alignment portion may be provided to align the position of the panel with respect to the panel. The first alignment portion is composed of a projection formed on one side of the lower surface of the panel, and a projection receiving groove formed on the picker to accommodate the projection, and the second alignment portion is spaced apart from the center of the auxiliary brush casing at a different distance from the lower surface of the auxiliary brush casing. It is preferably composed of at least two ribs formed at the position, and at least two lip accommodation spaces formed at positions corresponding to the ribs on the upper surface of the panel to accommodate the ribs.

Hereinafter, with reference to the accompanying drawings, a nozzle assembly of a vacuum cleaner according to embodiments of the present invention will be described in detail.

(First embodiment)

1 to 3, there is shown a nozzle assembly 1 of a vacuum cleaner according to a first embodiment of the present invention. The nozzle assembly 1 of the first embodiment includes a nozzle body 2, a drum brush unit 5, and an auxiliary brush unit 10.

The nozzle body 2 includes a main body casing 3. The main body casing 3 is formed with an air passage (not shown) connected to the air intake opening 7 (see FIG. 2) formed in the drum brush unit 5. Therefore, when suction power is generated from the vacuum motor (not shown) installed in the cleaner main body (not shown), dirt and air introduced through the air suction opening 7 pass through the air passage of the main body casing 3 to the nozzle body ( 2) Flows into the cleaner body connected to the rear side. In addition, the main body casing 3 may be provided with a turbine (not shown) that is rotated by inflowing air or a drive motor (not shown) for driving the drum brush 28. The rear of the main body casing (3) is provided with a pair of wheels (4) to facilitate the movement of the nozzle assembly (1). The main body casing 3 near one of the pair of wheels 4 is provided with a lever 8 for tilting the cleaner body connected to the rear side of the nozzle assembly 1. Reference numeral 9 in Figure 1 is a height adjustment knob. Since the configuration of the lever 8 and the height adjustment knob 9 is the same as in the prior art, a detailed description thereof will be omitted.

The drum brush unit 5 includes a drum brush casing 26 and a drum brush 28.

The drum brush casing 26 may be configured integrally or separately from the body casing 3, and the drum brush 28 is installed therein. The bottom surface of the drum brush casing 26 is formed with an air inlet 7 through which dirt and air are introduced, and the air inlet 7 has a large inlet, such as a quilt or a piece of cloth, in the external air including the inlet. A plurality of ribs 6 to prevent the can be installed to cross the air intake (7).

The drum brush 28 is in contact with the surface to be cleaned and rotates to separate the dirt from the surface to be cleaned by hitting the surface to be tangentially. For this purpose, the drum brush 26 is rotatably installed at the dirt suction port 7 side of the main body casing 3. The drum brush 26 may be connected to a turbine or a driving motor of the body casing 3 described above and rotated.

The auxiliary brush unit 10 is installed in front of the main body casing 3, and is used for preliminarily brushing off the dirt on the surface to be cleaned from the front of the drum brush 28, and at a predetermined angle with respect to the main body casing 3; It is installed to turn.

Referring to FIG. 3, the auxiliary brush unit 10 includes an auxiliary brush member 11, left and right bracket members 13 and 14, and left and right links 15 and 16.

The auxiliary brush member 11 is for scraping the carpet so as to separate hair or pet hair tangled on the carpet, and includes an auxiliary brush casing 11a and an auxiliary brush 30.

Auxiliary brush casing (11a) is formed to have a substantially rectangular cross-section, the upper side is provided with a handle (12) to apply a force to the user to expand and fold the auxiliary brush member (11). The auxiliary brush casing 11a may be formed in various shapes and materials according to the purpose of use. On both sides of the auxiliary brush casing 11a, a pair of guide guide members 25 (refer to FIG. 8, only the guide guide members on the right side) in the form of a roller are installed. The pair of guide guide members 25 are inserted into the left and right guide grooves 23 (only the right guide grooves are shown) formed in the inner surfaces 13b and 14b of the left and right bracket members 13 and 14, respectively, to assist the brush. Guide the motion of the member 11 to be folded and folded.

The auxiliary brush 30 is coupled to the lower surface of the auxiliary brush casing 11a, and a plurality of protrusions 30a are provided on the lower surface of the auxiliary brush 30 so as to separate the hair or pet hair tangled on the carpet by scraping the carpet. Is formed. Each of the plurality of protrusions 30a has a rectangular parallelepiped shape and extends from the auxiliary brush 30 toward the cleaning surface. The protrusion 30a according to the present embodiment has a rectangular parallelepiped shape, but as shown in FIG. 4, the protrusion 30b may be formed in a cylindrical shape, as shown in FIG. 5, and the protrusion 30c is shown in FIG. 5. The end of the protruding portion 30c which protrudes into a cylindrical shape and contacts the surface to be cleaned may be formed in a spherical shape having a diameter larger than that of the cylinder so as to have a round shape. In addition, in the present embodiment, the auxiliary brush 30 and the protrusion 30a are formed of elastic rubber. The auxiliary brush 30 is detachably installed at the lower portion of the auxiliary brush casing 11a. Therefore, since the auxiliary brush 30, which is dirty after use, can be separated from the auxiliary brush casing 11a and cleaned, the maintenance of the auxiliary brush 30 is easy.

The left and right bracket members 13 and 14 are fixed to both sides of the front of the main body casing 3, and support the auxiliary brush member 11 so as to rotate at a predetermined angle with respect to the nozzle body 2. . The left and right bracket members 13 and 14 have the same configuration, and referring to FIGS. 2 and 3, the left bracket member 13 is connected to the front left side of the main body casing 3, and the right bracket member 14 is disposed. Is connected to the right front of the main body casing 3, and is installed symmetrically with each other with the auxiliary brush member 11 therebetween. As described above, since the left / right bracket members 13 and 14 have the same configuration, only the right bracket member will be described below.

The inner surface 14b of the right bracket member 14 is provided with a right guide groove 23 for guiding the pivoting movement of the auxiliary brush member 11, and the guide provided in the auxiliary brush casing 11a in the right guide groove 23. The guide member 25 is inserted. When the guide guide member 25 is located at the upper end 23a of the right guide groove 23, the auxiliary brush member 11 is in a folded state, that is, approximately perpendicular to the surface to be cleaned (see Fig. 8). When the guide member 25 is located at the lower end 23b of the right guide groove 23, the auxiliary brush member 11 is in an unfolded state, that is, in a state parallel to the surface to be cleaned (see Fig. 10).

In addition, the right bracket member 14 is provided with a rotation preventing portion to limit the rotational movement of the right link 16, the rotation preventing portion includes a stopper (14a) and the hook (21).

The stopper 14a restricts the angle at which the right link 16 pivots upward, and is formed to protrude a predetermined distance from the inner surface 14b of the right bracket member 14 so that the right link 16 is not visible from the outside.

The hook 21 restricts the right link 16 from turning downward, and the right bracket member allows the right link 16 to pass over the hook 21 by the force of the user pressing the auxiliary brush member 11. It is formed in the inner surface 14b of 14, respectively. As shown in FIG. 6, the hook 21 is formed to protrude from the right bracket member 14 after cutting the right bracket member 14. When the user grabs the handle 12 formed on the auxiliary brush casing 11a and lifts it upward, the right link 16 is in contact with the inner surface 14b of the right bracket member 14 and is clockwise as shown by arrow B of FIG. 8. Rotate When rotated to some extent, as shown in FIG. 6, the right link 16 presses the hook 21 while rotating along the inclined portion 21a of the hook 21, and as shown in the dotted line of FIG. 6, the hook ( As the right bracket member 14 provided with 21 is bent, the right link 16 passes over the hook 21 and the movement is restricted by the stopper 14a. The inner surface 14b of the pressed right bracket member 14 returns to its original position by its elastic force.

7 is a diagram illustrating another embodiment of the hook. The hook 121 is inserted into the through hole 115 formed in the right bracket member 14 so as to be movable, and is connected to the support protrusion 114c formed inside the right bracket member 14 by a spring 124. do. That is, one side of the spring 124 is inserted and fixed to the support protrusion 114c, the other side is fixed to the hook 121. Accordingly, the spring 124 has an elastic force acting in a direction in which the hook 121 is exposed to the outside with respect to the through hole 115 formed in the right bracket member 14. Therefore, when the right link 16 rides over the hook 121, the hook 121 enters the right bracket member 14 while the spring member 124 is in a compressed state. Then, when the right link 16 is released from the hook 121, the hook 121 is returned to its original position by the elastic force of the spring 124.

3 and 10, an elastic member 22 is installed on the first hinge shaft 19 connecting the right link 16 to the right bracket member 14 (see FIG. 10). The elastic member 22 presses the right link 16 counterclockwise (see arrow A in FIG. 10). Thus, when the right link 16 is located between the stopper 14a and the hook 21, the right link 16 is about to rotate counterclockwise by the elastic member 22, but the vertical portion of the hook 21 Since the right link 16 is caught by 21b, the right link 16 cannot be rotated beyond the hook 21 by the weight of the right link 16 in the opposite direction (the arrow A direction in FIG. 10). Here, a coil spring or a torsion spring may be used.

The left and right links 15 and 16 connect the auxiliary brush member 11 and the left and right bracket members 13 and 14, and both ends thereof are the auxiliary brush casing 11a and the left and right bracket members 13 and 16, respectively. 14 is hinged. That is, one end of the right link 16 is assembled to be rotatable to the first hinge shaft 19 provided at the lower end of the nozzle body 2 side of the right bracket member 14, and the other end of the right link 16 is auxiliary One end of the brush casing 11a is rotatably assembled to the second hinge shaft 20 provided on one side of the roller 25 (see FIG. 8). In addition, the right link 16 is formed so that the user can ride over the hook 21 when the user pushes the handle 12 by hand or foot. The left link 15 also has the same configuration as the right link 16.

Hereinafter, the operation of the nozzle assembly 1 according to the first embodiment having the above-described configuration will be described with reference to FIGS. 3 and 8 to 11.

When cleaning the carpet, the user presses the handle 12 (see FIG. 1) installed on the auxiliary brush member 11 by hand or foot. Then, the left and right links 15 and 16 are rotated counterclockwise (see arrow A) as shown in FIG. 10 with respect to the first hinge axis 19. At this time, the left and right links 15 and 16 move beyond the vertical portion 21b of the hook 21 by the force of the user pressing the handle 12. When the left and right links 15 and 16 rotate down, the auxiliary brush member 11 is unfolded, as shown in FIGS. 10 and 11. At this time, when the left / right links 15 and 16 ride over the hook 21, the elastic force and the weight of the elastic member 22 pressing the left and right links 15 and 16 even if the user does not apply the force. The left and right links 15 and 16 rotate counterclockwise, and at the same time, the guide guide members 25 provided on both sides of the auxiliary brush member 11 are formed on the left and right bracket members 13 and 14. When the guide member 25 is positioned at the lower end 23b of the left / right guide groove 23 by moving downward along the right / right guide groove 23, the auxiliary brush member 11 is shown in FIGS. 10 and 11. As shown in the figure, it is in a fully extended state. That is, the auxiliary brush member 11 is in a state substantially parallel to the surface to be cleaned by the left and right guide grooves 23 and the left and right links 15 and 16 which guide the guide guide member 25. In addition, since the elastic member 22 presses the left and right links 15 and 16, the state in which the auxiliary brush member 11 presses the carpet with a constant force is maintained, and the bottom and the carpet of the auxiliary brush member 11 are maintained. The friction force between them remains uniform.

In this state, when the nozzle assembly 1 is moved, the plurality of protrusions 30a formed on the auxiliary brush 30 are formed while the auxiliary brush 30 installed under the auxiliary brush casing 11a contacts the carpet at a constant pressure. Scraping the carpet separates the hair or pet hair from the carpet. Then, the separated hair or hair is easily sucked into the main body through the dirt suction opening 7 of the main body casing (3).

When the carpet is cleaned or when it is not necessary to use the auxiliary brush member 11, the auxiliary brush member 11 is left in a folded state. When the auxiliary brush member 11 is folded, the user pushes the handle 12 of the auxiliary brush member 11 (see FIG. 1) by hand or foot. Then, the left and right links 15 and 16 move clockwise around the first hinge axis 19 as shown by arrow B of FIG. 8, and the guide guide member 25 opens the left and right guide grooves 23. While moving clockwise along, the auxiliary brush member 11 starts to fold. When the left and right links 15 and 16 continue to move clockwise and ride over the hook 21, the auxiliary brush member 11 is completely folded. That is, when the left / right links 15 and 16 ride over the hook 21, the auxiliary brush member 11 is in a state substantially perpendicular to the surface to be cleaned as shown in Figs. The member 25 is located at the upper end 23a of the left and right guide grooves 23. In this state, the nozzle assembly 1 according to the present invention removes dirt using only the drum brush 28 as in the general nozzle assembly.

Second Embodiment

FIG. 12 is a perspective view illustrating a nozzle assembly 1 ′ of a vacuum cleaner according to a second embodiment of the present invention, and FIG. 13 is to remove the upper casing 132 of the auxiliary brush unit 110 and to mount the left and right brackets. The lower casing 140 and the frame member 150 are shown by cutting a portion of the unit 180.

12 and 13, the nozzle assembly 1 ′ of the second embodiment includes the nozzle body 2, the drum brush unit 5, the left / right bracket portion 180, the cam member 170, and the first nozzle assembly 1 ′. 1 includes an elastic member 172, and the auxiliary brush unit (110). Here, since the configuration of the nozzle body 2 and the drum brush unit 5 is the same as that of the nozzle assembly 1 of the first embodiment, detailed description thereof will be omitted.

The left and right brackets 180 protrude from both sides of the drum brush casing 26 of the drum brush unit 5. The left / right bracket 180 supports the auxiliary brush unit 110 and is integrally formed with the drum brush casing 26. However, the drum brush casing 26 and the left / right bracket portion 80 may be configured separately. 13 and 15, a long hole 182 is formed in each of the left and right brackets to insert both sides of the frame shaft 154 of the auxiliary brush unit 110. The long hole 182 is formed long in the vertical direction, and the first elastic member 172 and the cam member 170 which will be described later are installed in the long hole 182. The first elastic member 172 is fixed to the inner wall end of the long hole 182 to press the cam member 170. Referring to FIG. 15, upper and lower guide grooves 187 and 189 are formed at respective inner walls of the left and right brackets 180 at intervals of 180 degrees, and upper keys 185 are formed in the upper and lower guide grooves 187 and 189. And upper and lower coil springs 197 and 199 for pressing the lower and lower keys 186 and the upper and lower keys 185 and 186 into the long hole 182. Therefore, when the cam member 170 moves upward, the upper key 185 is further inserted into the upper guide groove 187 while compressing the upper spring 197 by the cam member 170 and the lower key 186 is The pressing force of the lower spring 199 further protrudes out of the lower guide groove 189. In addition, when the cam member 170 moves downward, the upper key 185 further protrudes out of the upper guide groove 187 by the pressing force and the weight of the upper spring ring 197, and the lower key 186 is the cam member. The lower spring 199 is further inserted into the lower guide groove 189 by the pressing force of the 170.

Referring to FIGS. 13 and 15, the cam member 170 has a cylindrical shape, one side of which is in contact with the first elastic member 172 is flat, and the other side which is engaged with the uneven portion 158 of the frame shaft 154 is Like one end of the uneven portion 158, the valleys P1 and the hills P2 and the slopes S connecting the valleys P1 and the hills P2 are formed in the circumferential direction. Two key grooves 174 are formed in the longitudinal outer peripheral surface of the cam member 170 at 180 degree intervals, and upper and lower keys 185 and 186 are inserted into the key grooves 174. Therefore, even if the uneven portion 158 of the frame shaft 154 rotates, the keys 185 and 186 and the key grooves 174 are engaged to suppress the rotation of the cam member 170, so that the cam member 170 cannot rotate, and the uneven portion ( 158 and the inclined portion (S) of the cam member 170 slides with each other, the cam member 170 is moved in the horizontal direction.

The drum brush 28 is installed inside the drum brush casing 26 (see FIG. 12), and is installed inside the air suction opening 7. Therefore, when the drum brush 28 is rotated, the blade or the brush member provided on the outer circumferential surface of the drum brush 8 scratches the surface to be cleaned.

Referring to FIG. 12, the auxiliary brush unit 110 is installed to be connected to the left / right bracket 180. That is, rotatably and detachably installed in front of the drum brush casing 26, the dirt or dust on the surface to be cleaned is preliminarily shaken off in front of the drum brush 28. 12 and 13, the auxiliary brush unit 110 includes an upper casing 132, a lower casing 140, a frame member 150, an auxiliary brush 190, and a second elastic member 144. do.

The upper casing 132 and the lower casing 140 are coupled to each other with the frame member 150 therein, and are coupled to each other while surrounding the frame shaft 154 of the frame member 150, such as the frame shaft 154. Rotated and moved (see FIGS. 13 and 15). Referring to FIG. 12, a handle 112 is provided in front of the upper surface of the upper casing 132. Referring to FIG. 13, the lower casing 140 is provided with three bosses 142 therein, and a second elastic member 144 is installed inside the boss 142.

13 and 15, the frame member 150 includes a frame body 152, a frame key 151, a frame shaft 154, and an uneven portion 158. The frame body 152 is a central portion of the frame member 150 in FIG. 13, and the frame shaft 154 and the frame key 151 are integrally connected thereto. Three frame keys 151 protrude downward in a cylindrical shape on the bottom of the frame body 152 and are inserted into the boss 142 of the lower casing 140 to be mounted in the boss 142. Compress member 144. Accordingly, the load of the frame member 150 and the load of the upper casing 132 are elastically transmitted to the lower casing 140, and the auxiliary brush 190 installed on the bottom of the lower casing 140 presses the surface to be cleaned. Scrape dirt on the surface to be cleaned while pressurizing. The frame shaft 154 protrudes on both sides of the frame body 152, and the uneven parts 158 are provided at both ends thereof. The uneven portion 158 is inserted into the long hole 182 of the bracket portion 180, rotates in engagement with the cam member 170, and can flow in the long hole 182.

The auxiliary brush 190 may be mounted on or detached from the bottom surface of the lower casing 140 with a rubber material. Referring to FIG. 13, the auxiliary brush 190 has a plurality of protrusions 193 formed therein.

Hereinafter, referring to FIGS. 14 to 18, the operation of the nozzle assembly 1 ′ of the vacuum cleaner according to the second embodiment will be described in detail.

14 and 15 illustrate a state in which the auxiliary brush unit is in contact with the surface to be cleaned. As shown in FIG. 14, when the auxiliary brush 190 of the auxiliary brush unit 110 is in close contact with the cleaning surface 100, the frame member 150 and the upper casing 132 on the upper side of the auxiliary brush 190 are cleaned. The secondary brush 190 scratches the bottom surface while pressing the surface to be cleaned at a constant pressure by the load of. In front of the drum brush 28 (see FIG. 12), the auxiliary brush unit 110 scratches the hair, etc., preliminarily deposited on the surface to be cleaned, and then once again the hair in the drum brush 28 installed in the drum brush casing 26. After the back is scattered, it is sucked into the air intake opening (7). In this case, the frame shaft 154 and the cam member 170 inserted into the long hole 182 are inclined to the bottom surface 183 of the long hole 182 by the load of the frame member 150 and the upper casing 132. The upper key 185 mounted in the upper guide groove 187 protrudes by the upper spring 197, and the lower key 186 compresses the lower spring 199 by the load of the cam member 170, thereby lowering the lower guide. Further into the groove 189. In addition, the first elastic member 172 is relaxed, and the uneven portion 158 and the cam member 170 is fixed in a state in which the bone P1 and the peak P2 are engaged. Since the cam member 170 cannot be rotated, the frame shaft 154 cannot be rotated unless an external force is applied, and thus, the auxiliary brush unit 110 also cannot be rotated in contact with the floor. The length L means the diameter of the long hole 182.

When the user grasps the handle 112 of the upper casing 132 and rotates the auxiliary brush unit 110 about 45 degrees in the direction of arrow C of FIG. 14, the frame shaft 154 and the uneven portion 158 are in the same direction. Rotate However, since the cam member 170 is prevented from rotating by the upper and lower keys 185 and 186, the cam member 170 and the inclined portion S of the uneven portion 158 slide with each other, as shown in FIG. Likewise, the peaks P2 and the peaks P2 of the uneven portion 158 and the cam member 170 mesh with each other, and the cam member 170 compresses the first elastic member 172 while the arrow A 'of FIG. Direction by the height of the peaks P2 of the uneven portion 158 in the direction. At this time, since the upper casing 132 and the frame member 150 that push the lower casing 140 also incline about 45 degrees, the second elastic member 144 mounted on the boss 142 (see FIG. 13) of the housing casing 140. The frame member 150 is slightly raised in the long hole 182 by the pressing force for pressing the frame key 151, and the cam member 170 engaged with the frame key 151 is also raised to the same height.

When the auxiliary brush unit 110 rotates more and more, and becomes vertical as shown in FIG. 17, the cam member 170 is moved to the arrow B 'by the first elastic member 172 as shown in FIG. 18. The cam member 170 and the concave-convex portion 158 inside the long hole 182 are fixed by moving in the direction. The mountain P2 of the uneven portion 158 and the valleys P1 of the cam member 170 are engaged with each other, and the cam member 170 is not rotated by the upper and lower keys 185 and 186 so that the uneven portion 158 is engaged with the peak P2. It does not rotate unless external force is applied. The lower casing 140 is because the auxiliary brush unit 110 is substantially perpendicular to the cleaning surface 100 and the load applied to the lower casing 140 by the upper casing 132 and the frame member 150 is removed. The cam member 170 and the uneven portion 158 are in close contact with the upper surface 181 of the long hole 182 by the first elastic member 144 mounted on the boss 142.

(Third Embodiment)

19 to 23 show a nozzle assembly 1 "of a vacuum cleaner according to a third embodiment of the present invention.

Referring to FIG. 19, the nozzle assembly 1 ″ of the third embodiment includes the nozzle body 2, the drum brush unit 5, the left / right bracket 240, the locking unit 260, and the auxiliary brush unit 210. Here, the configurations of the nozzle body 2 and the drum brush unit 5 are the same as those of the nozzle assemblies 1 and 1 'of the first and second embodiments, and thus a detailed description thereof will be omitted. .

The drum brush casing 26 is provided with slide rails 226 (see FIG. 23) at both front sides, and a mounting space 221 at the front center portion. The left and right brackets 240 are mounted on the two slide rails 226, and the locking member 260 is installed in the mounting space 221. As shown in FIG. 21, the slide rail 226 is connected to the left / right bracket 240 by being inserted into the slide groove 244 of the left / right bracket 240. That is, the slide rail 226 is inserted into the slide groove 244 of the left / right bracket 240, and the left / right bracket 240 is moved in the longitudinal direction of the slide rail 226 so that the left / right bracket 240 ) Is fastened to the slide rail 226 and separated by moving in the opposite direction to the fastening direction. Therefore, it is easy to mount or remove the left / right bracket 240 to the drum brush casing (26). Unlike the present embodiment, the left / right bracket 240 may be assembled to the slide rail 226 and then fixed with a screw (not shown) or a hook member (not shown). Loosen to unlock or exchange.

21 and 23, each of the left and right brackets 240 includes a mounting groove 241, a slide groove 244, and a spring 242. The left / right bracket 240 is mounted to the drum brush casing 26, and two cover arms 278 of the auxiliary brush casing 232 are connected to the left / right bracket 240. The mounting groove 241 is formed in the longitudinal direction of each bracket 240 from one side of the bracket 240, the spring 242 is installed inside the mounting groove 241. The cover shaft 284 of the auxiliary brush casing 232 is inserted into the mounting groove 241.

The slide groove 244 is formed in the longitudinal direction of each bracket 240 on both sides of each bracket 240, the slide rail 226 is inserted. The spring 242 is installed inside the mounting groove 241 of each bracket 240 into which the cover shaft 284 of the auxiliary brush casing 232 is inserted. That is, the spring 242, one side is fixed to the inside of each bracket 240 and the other side is fixed to the cover arm 278, the auxiliary brush casing 232 in the upward direction, that is, as shown in FIG. The auxiliary brush casing 232 is elastically pressed in the direction of rotation to the upper end of the drum brush casing 26.

19 and 20, the locking unit 260 is installed in the mounting space 221 of the auxiliary brush casing 232, and includes a hook member 262 and a spring 264. The hook member 262 has a button portion 266 protruding to the outside so that the hook member 262 can move in the vertical direction, and a ring 263 is formed at the lower portion thereof. The ring 263 is engaged with the locking portion 282 of the auxiliary brush casing 232. The spring 264 is mounted below the mounting space 221 and presses the hook member 262 upward.

19 to 21, the auxiliary brush unit 210 includes an auxiliary brush casing 232, a panel 274, and an auxiliary brush 276.

The auxiliary brush casing 232 has two cover arms 278 protruding obliquely in the upward direction on both sides of the upper surface, and a cover shaft 284 protruding in the horizontal direction at the end of the cover arm 278 (see FIG. 23). ) Is provided integrally. The cover shaft 284 is elastically pressurized in the upward direction by the springs 242 provided on the brackets 240. 20 and 21, a plurality of keys 290 protruding downward from the bottom of the auxiliary brush casing 232 are provided.

19 to 21, the panel 274 is rotatably coupled to the lower end of the auxiliary brush casing 232, and has a plurality of bosses 292 provided on an upper surface thereof, and a boss 292. The spring 294 is mounted inside. A plurality of keys 290 of the auxiliary brush casing 232 are inserted into the boss 292, and the keys are urged upwards by the springs 294 in the boss 292. In addition, as shown in FIG. 19, the panel 274 is rotatable with respect to the auxiliary brush casing 232 by inserting the panel shaft 286 into the long hole 280 formed on both sides of the auxiliary brush casing 232. . Accordingly, even if the surface to be cleaned is irregular, the panel 274 elastically pushes the surface to be cleaned at a constant pressure while moving and rotating elastically. The locking portion 282 is provided at the center of the upper surface of the auxiliary brush casing 232. The locking portion 282 is locked with the ring 263 of the hook member 262.

Referring to FIGS. 20 and 21, the auxiliary brush 276 is made of a rubber material and has elasticity, and includes a plurality of protrusions 288 protruding downward. The shape of the protrusion 288 may be configured in various forms such as a cylinder, rounded oval. The projection 288 scrapes away the hair or pet animal's hair attached to the surface to be cleaned to separate them from the surface to be cleaned. The auxiliary brush 276 is fixed to the bottom surface of the panel 274, and the panel 274 flows and rotates up and down with respect to the auxiliary brush casing 232, so that the auxiliary brush 276 also serves as the auxiliary brush casing 232. Rotate and move up and down.

The operation of the nozzle assembly 1 ″ of the vacuum cleaner according to the third embodiment of the present invention configured as described above will be described in detail with reference to FIGS. 19 to 23.

When the auxiliary brush unit 210 is used to clean a portion of a carpet or a blanket on which hair or pet hair, etc. are attached, as shown in FIG. 19, the auxiliary brush unit 210 comes into contact with the surface to be cleaned. When stepping down the auxiliary brush unit 210 by hand or foot in the direction opposite to the elastic force of the spring 242 installed inside the left / right bracket 240, as shown in FIG. 20, the auxiliary brush casing 232 The locking portion 282 and the hook 263 of the hook member 262 are locked to each other, the auxiliary brush unit 210 is fixed to the drum brush unit 5 by the locking unit 260 (use position). At this time, the user moves the nozzle assembly 1 "to the front and the projection 288 of the auxiliary brush 276 comes into contact with the surface to be cleaned, scraping dirt wound on the surface of the carpet such as hair and preliminarily falling off the surface of the carpet. The drum brush 28, which is rotated and rotated, hits the surface to be cleaned and once again scatters the dirt into the air inlet 7. The boss 292 of the panel 274 and the auxiliary brush casing 232 Since the key 290 is elastically coupled and the panel shaft 286 is rotatably connected to the long hole 280 of the auxiliary brush casing 232, even if the surface to be cleaned is curved, the panel 74 is auxiliary. The brush casing 232 is scratched while being elastically moved and rotated while being in contact with the surface to be cleaned.

When the auxiliary brush unit 210 is not temporarily used, the button portion 266 of the hook member 262 is pushed downward to lock the locking portion 282 and the hook member 262 of the auxiliary brush casing 232. Release the ring 263 of the coupling. The auxiliary brush unit 210 separated from the drum brush unit 5 is moved to the upper portion of the drum brush casing 26 by the pressing force of the spring 242 installed inside the left / right bracket 240 as shown in FIG. 22. Is moved (unused position). If the user does not press the auxiliary brush unit 210 downward again, the auxiliary brush unit 210 is maintained as shown in FIG. 22 by the pressing force of the spring 242 installed on the left / right bracket 240.

When the auxiliary brush unit 210 is not used for a long time or when maintenance is required, as shown in FIG. 23, the left and right brackets 240 are moved in a horizontal direction with respect to the slide rail 226. The auxiliary brush unit 210 is separated from the drum brush unit 5. The separated auxiliary brush unit 210 may be stored separately, and only the drum brush 28 may be used. When the auxiliary brush unit 210 is coupled to the drum brush casing 26 again, the slide rail 226 is inserted into the slide groove 244 of the left / right bracket 240 in the opposite direction to disassembly and then moved horizontally. Just do it.

(Example 4)

   24 to 33 show a nozzle assembly 1 "'of a vacuum cleaner according to a fourth embodiment of the present invention.

   Referring to FIG. 24, the nozzle assembly 1 ′ ′ of the fourth embodiment includes a nozzle body 2, a drum brush unit 5, a left / right bracket 240, a locking unit 260, and an auxiliary brush unit ( 310. Since the nozzle assembly 1 "'according to the fourth embodiment is the same as the nozzle assembly 1" of the third embodiment except for the auxiliary brush unit 310, the auxiliary brush unit 310 Detailed description of the configuration except for this will be omitted.

   24 and 25, the auxiliary brush unit 310 includes an auxiliary brush casing 372, a panel 374, and an auxiliary brush 276.

   On both sides of the upper surface of the auxiliary brush casing 372, two cover arms 278 protruding obliquely in the upward direction are rotatably installed on the left and right brackets 240, and the springs installed on the left and right brackets 240 Is elastically pressed upwards. In addition, as shown in FIG. 28, two surfaces of the auxiliary brush casing 372 having the first and second hinge brackets 380 (only one shown in FIGS. 26A to 26C and 31) described below are fixed to both sides of the auxiliary brush casing 372. The high information 373 is formed.

As shown in Figs. 26A to 26C, the panel 374 is configured to be movable in the front and rear and horizontal directions with respect to the auxiliary brush casing 372. To this end, the first and second hinge brackets 380 for hinge fixing the panel 374 to the auxiliary brush casing 372 are installed between the panel 374 and both side ends of the auxiliary brush casing 372. 31 and 32, each of the first and second hinge brackets 380 includes a body 381 and a link member 385. The body 381 is formed with a through hole 384 in which a general screw 383 is fixed to the high information 373 of the auxiliary brush casing 372. In addition, the body 381 has two screw holes (not shown) to which the screw portion 388b of the hinge screw 388, which will be described later, on both sides of the through hole 384 are orthogonal to the through hole 384. It is formed in the direction. The link member 385 is composed of two links 386, and each link 386 is hinged by two hinge screws 388 at two hinge holes 387 formed at both ends. As shown in FIG. 33, each hinge screw 388 is a raised portion 386a that is rotatably supported in the hinge hole 387 of the link 386, and the screw of the body 381. A screw portion 386b is screwed into the screw hole 375 of the hole or panel 374 (see FIG. 29). As shown in FIG. 29, the screw holes 375 of the panel 374 are formed at both ends of the panel 374. Thus, as shown in FIGS. 26A to 26C, when the nozzle body 2 of the nozzle assembly 1 "'is moved back and forth by the user, the link members of the first and second hinge brackets 380 are oriented. Each link 386 of 385 is pivoted about the body 381 and the panel 374 at both ends, such that the panel 374 and the auxiliary brush 376 fixed thereto are moved back and forth and in the horizontal direction. Can be.

The auxiliary brush 376 is comprised of the picker 377 attached to the lower surface of the panel 374. The picker 377 may be composed of a lint-free cloth, fibers (cloth fabrics), or wool. As shown in FIG. 30, the picker 377 picks up dirt when the nozzle body 2 of the nozzle assembly 1 "'is pulled in the direction of an arrow A" as shown in FIG. 26A. It is preferable that the lint portion 378 is formed to have an inclined grain in one direction, that is, in the direction of the drum brush unit 5 (arrow (A ") direction) so as to be scraped away.

In this case, in order to ensure that the grain of the lint portion 378 is accurately positioned during manufacture, a first alignment of the position of the picker 377 with respect to the panel 374 is made between the panel 374 and the picker 377. The alignment portion 390 is installed (see FIG. 27), and the second alignment portion 395 aligns the position of the panel 374 with respect to the auxiliary brush casing 372 between the auxiliary brush casing 372 and the panel 374. ) Is installed (see FIGS. 28 and 29). As shown in FIG. 27, the first alignment portion 390 has a protrusion 392 formed at one side of the bottom surface of the panel 374, and a protrusion accommodation groove 391 formed in the picker 377 to accommodate the protrusion 392. It consists of. As illustrated in FIGS. 28 and 29, the second alignment unit 395 may include two ribs formed at positions spaced apart from each other at different distances from the center of the auxiliary brush casing 372 on the bottom surface of the auxiliary brush casing 372. A rib 396 and two rib receiving spaces 397 formed at positions corresponding to the ribs 396 on the upper surface of the panel 374 to accommodate the ribs 396 are preferable.

   Thus, during assembly. Attaching the picker 377 to the bottom surface of the panel 374 while aligning and inserting the projection 392 of the panel 374 into the projection receiving groove 391 of the picker 377, the lip of the auxiliary brush casing 372 ( Attaching the panel 374 to the auxiliary brush casing 372 while aligning and inserting the 396 into the lip receiving space 397 of the panel 374, the picker 377, panel 374, and auxiliary brush casing 372. ) May be assembled such that the picker 377 has a grain inclined toward the drum brush unit 5.

  The operation of the nozzle assembly 1 "'of the vacuum cleaner according to the fourth embodiment of the present invention configured as described above indicates that the nozzle body 2 of the nozzle assembly 1"' is shown in FIG. When pulled in the direction of "), the picker 377 scrapes dust and dirt toward the drum brush unit 5, moves and scatters it toward the drum brush unit 5 (arrow A), and as shown in Fig. 26C. As shown in FIG. 19 to FIG. 23 except that dust and dirt are not pushed out of the nozzle body 2 (arrow B ") when pushed in the direction of arrow B". Since it is the same as the nozzle assembly 1 ", the detailed description thereof is omitted.

As described above, the nozzle assembly of the vacuum cleaner according to the embodiments of the present invention, by installing the auxiliary brush unit in front of the drum brush, dirt on the surface to be cleaned, especially hair or pet hair that is not easily separated from the surface to be cleaned. Scratching the back, once again scattered with a drum brush to suck in, cleaning efficiency is improved.

In addition, the auxiliary brush unit is pivotally mounted to the nozzle body or the drum brush unit so that the auxiliary brush can be selectively cleaned when cleaning the surface to be cleaned that requires the use of the auxiliary brush or when cleaning the surface to be cleaned without the need to use the auxiliary brush. Since it is possible to contact the surface to be cleaned, the life of the auxiliary brush can be extended. In addition, it is possible to rotate the auxiliary brush unit to the non-use position simply by pressing the button part, and maintain the state, so that the use of the nozzle assembly is convenient.

In addition, since the auxiliary brush unit can be attached to or detached from the drum brush casing by attaching or detaching the bracket to the slide rail, there is an advantage that the attachment and detachment of the auxiliary brush unit is easy.

In addition, since the auxiliary brush can move up and down elastically and / or rotate or move horizontally with respect to the cover, the auxiliary brush can be in contact with the surface to be cleaned with a constant pressing force during cleaning. Therefore, even if the auxiliary brush is a curved surface to be cleaned always scrapes the surface to be cleaned with an appropriate area can increase the cleaning efficiency of hair or pet hair.

In addition, when the auxiliary brush is composed of pickers having a grain inclined in one direction, that is, in the direction of the drum brush unit, when the nozzle assembly is pushed forward, dirt is not pushed out. Problems such as being able to enter the respirator of the user are greatly reduced.

In addition, when the cover and the panel is provided with a lip and lip receiving holes, respectively, and the panel and the picker are provided with a projection and a projection receiving groove, there is an advantage that the cover and the panel and the panel and the picker can be easily assembled with each other.

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 such is 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 (42)

Nozzle body; A drum brush unit installed in the nozzle body and provided with a drum brush that rotates in contact with the surface to be cleaned and shakes off dirt contained on the surface to be cleaned; And And an auxiliary brush unit installed on one of the nozzle body and the drum brush unit, the auxiliary brush unit including an auxiliary brush for preliminarily brushing off dirt contained on the surface to be cleaned. According to claim 1, wherein the auxiliary brush unit, It is rotatably connected to one of the nozzle body and the drum brush unit, the nozzle assembly of the vacuum cleaner, characterized in that it can selectively maintain the contact or non-contact state with the surface to be cleaned. The method of claim 2, wherein the auxiliary brush unit, An auxiliary brush member capable of selectively maintaining a contact or non-contact state with the surface to be cleaned; A bracket member having one side connected to the nozzle body; And And a link member connecting the bracket member and the auxiliary brush member to the nozzle assembly of the vacuum cleaner. The method of claim 3, wherein the link member, The nozzle assembly of the vacuum cleaner, characterized in that rotatably connected to the bracket member and the auxiliary brush member. The method of claim 4, wherein the auxiliary brush unit, The nozzle assembly of the vacuum cleaner further comprises a guide guide member for connecting the auxiliary brush member and the bracket member. The method of claim 5, The bracket member has a guide groove, and one end of the guide guide member is inserted into the guide groove to move the nozzle assembly of the vacuum cleaner, characterized in that for changing the position of the auxiliary brush member. The method of claim 4, wherein the auxiliary brush unit, Nozzle assembly of the vacuum cleaner further comprises a rotation preventing portion for limiting the rotation of the link member. The method of claim 7, wherein the rotation preventing portion, A hook member provided on the bracket member and configured to suppress the link member from being rotated on the surface to be cleaned; And A nozzle assembly for a vacuum cleaner comprising a stopper for preventing rotation in a direction opposite to the surface to be cleaned. The method of claim 8, wherein the auxiliary brush unit, The nozzle assembly of the vacuum cleaner, characterized in that further comprising an elastic member for pressing the link member in the direction of the surface to be cleaned. The auxiliary brush member of any one of claims 3 to 9, An auxiliary brush casing rotatably connected to the link member; And, A nozzle assembly of the vacuum cleaner, comprising: an auxiliary brush coupled to the auxiliary brush casing and capable of maintaining a contact or non-contact state with the surface to be cleaned. The method of claim 10, wherein the auxiliary brush,  The nozzle assembly of the vacuum cleaner, characterized in that detachable from the auxiliary brush casing. The method of claim 11, wherein the auxiliary brush, Nozzle assembly of a vacuum cleaner, characterized in that it has a plurality of protrusions protruding toward the surface to be cleaned. The method of claim 12, The protrusion assembly of the vacuum cleaner, characterized in that formed in a rectangular shape. The method of claim 12, Nozzle assembly of a vacuum cleaner, characterized in that the end of the projection in contact with the surface to be cleaned rounded. The method according to claim 13 or 14, The protrusion is a nozzle assembly of a vacuum cleaner, characterized in that composed of a material having elastic force, such as rubber. The method of claim 2, Further comprising a left and a right bracket protruding forward from both front sides of the drum brush unit, The auxiliary brush unit is a nozzle assembly of the vacuum cleaner, characterized in that connected to the left and right brackets. The method of claim 16, wherein the auxiliary brush unit, A frame member rotatably coupled to the drum brush unit; An upper casing surrounding the frame member from the top; A lower casing surrounding the frame member and coupled to the upper casing; And, A subsidiary brush detachably coupled to the bottom of the lower casing; nozzle assembly of a vacuum cleaner comprising a. The method of claim 17, wherein the upper and lower casings, The nozzle assembly of the vacuum cleaner, characterized in that the up and down flow and rotation with respect to the drum brush unit. The method of claim 17, wherein the frame member, Frame body; A frame key protruding downward from the bottom of the frame body; Frame shafts protruding to both sides of the frame body; And, And a concave-convex portion provided at each end of each of the frame shafts. The method of claim 19, The left and right brackets are each formed with a long hole formed in the horizontal direction, The nozzle assembly of the vacuum cleaner further comprises a first elastic member inserted into the long hole, and a cam member engaged with the uneven portion of the frame member. The method of claim 20, A key protrudes from the inner wall of the long hole, The cam member is formed with a key groove, The cam assembly is a nozzle assembly of the vacuum cleaner, characterized in that the horizontal movement with respect to the rotational movement of the frame member. The method according to any one of claims 18 to 20, The lower casing is formed with a boss into which the frame key of the frame member is inserted, and the boss assembly of the vacuum cleaner, characterized in that the second elastic member is provided inside the boss. The method of claim 2, The nozzle assembly of the vacuum cleaner is installed on the drum brush unit, further comprising a locking unit for selectively fixing the auxiliary brush unit. The method of claim 23, wherein the drum brush unit, Drum brush; And It includes a drum brush casing surrounding the drum brush, The auxiliary brush unit is a nozzle assembly of the vacuum cleaner, characterized in that coupled to or separated from the drum brush casing. The method of claim 23, wherein the locking unit, A hook member locked with the auxiliary brush unit; And Nozzle assembly of the vacuum cleaner comprising a spring for pressing the hook member in the upward direction. The method of claim 25, wherein the auxiliary brush unit, Auxiliary brush casing; A panel coupled to a lower end of the auxiliary brush casing; And Nozzle assembly of the vacuum cleaner comprising a secondary brush coupled to the bottom of the panel. 27. The nozzle assembly of claim 26, wherein the auxiliary brush casing is selectively locked with the hook member of the locking unit. The method of claim 26, wherein the panel, The nozzle assembly of the vacuum cleaner, characterized in that the resilient movement to the auxiliary brush casing, it is possible to move. The method of claim 28, wherein the panel, A plurality of bosses formed on the upper surface and each containing a spring; And And a support shaft rotatably supported at the long hole formed at both ends and formed in the auxiliary brush casing. 27. The nozzle assembly of claim 26, wherein the auxiliary brush includes a plurality of protrusions protruding from the bottom of the auxiliary brush. The method of claim 2, The drum brush unit includes a drum brush and a drum brush casing surrounding the drum brush, The auxiliary brush unit includes an auxiliary brush casing, a panel coupled to the bottom of the auxiliary brush casing, and an auxiliary brush coupled to the bottom of the panel, At least one bracket is installed on the drum brush casing, and the auxiliary brush casing includes a cover arm rotatably coupled to the bracket. 32. The nozzle assembly of claim 31, wherein the bracket is installable and detachable from the drum brush casing. 33. The method of claim 32, The drum brush casing is provided with a slide rail, the bracket is a nozzle assembly of the vacuum cleaner, characterized in that the slide groove is coupled to the slide rail. 32. The nozzle assembly of claim 26 or 31, wherein the panel is disposed to be movable in the front, rear, and horizontal directions with respect to the auxiliary brush casing. 35. The apparatus of claim 34, wherein the auxiliary brush unit further comprises at least one hinge bracket installed between the panel and the auxiliary brush casing and hinged to fix the panel to the auxiliary brush casing in a horizontal direction. Nozzle assembly of a vacuum cleaner. The method of claim 35, wherein the hinge bracket, A body fixed to a high information formed on a lower surface of the auxiliary brush casing; And And a link member having at least one link hinged to the body and the panel by a hinge screw. The method of claim 36, wherein the hinge screw, An end portion rotatably supported by hinge holes formed at both ends of the link; And Nozzle assembly of the vacuum cleaner comprising a screw portion screwed to the body or the panel. 27. The nozzle assembly of claim 26, wherein the auxiliary brush comprises a picker attached to a lower surface of the panel and formed of cloth, fibers, or wool having a lint. 39. The nozzle assembly of claim 38, wherein the picker is formed such that the bobbin portion has a grain inclined in one direction. The method of claim 39, A first alignment portion disposed between the panel and the picker and aligning the position of the picker with respect to the panel; And And a second alignment part disposed between the auxiliary brush casing and the panel and aligning the position of the panel with respect to the auxiliary brush casing. The method of claim 40, wherein the first alignment unit, A protrusion formed on one side of a bottom surface of the panel; And And a projection accommodation groove formed in the picker to accommodate the projection. The method of claim 40, wherein the second alignment unit, At least two ribs formed on a lower surface of the auxiliary brush casing at a different distance from the center of the auxiliary brush casing; And The nozzle assembly of the vacuum cleaner, characterized in that formed on the upper surface of the panel corresponding to the lip includes at least two lip receiving space for receiving the lip.

Images