Cleaner head for vacuum cleaner

Abstract

To provide a cleaner head for a vacuum cleaner.SOLUTION: A cleaner head for a vacuum cleaner includes a housing, a front agitator, and a rear agitator. A suction chamber is arranged between the front agitator and the rear agitator. A baffle is arranged inside the suction chamber between the agitators. During use of the cleaner head, dust is taken into air sucked toward the suction chamber. While a guide member attached to the housing guides the taken dust toward the suction chamber, the baffle guides the air upward toward a center suction port of the suction chamber.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a cleaner head for a vacuum cleaner. [Background technology]

[0002] The vacuum cleaner mainly comprises a main body including a dust separator, and a suction inlet connected to the main body. a cleaner head having a suction inlet and a cleaner head for drawing dust-laden air into the main body through the suction inlet and the cleaner head; The suction inlet is provided with a motor-driven fan unit for sucking the air into the floor surface to be cleaned. The dust-laden air is conveyed to the separator, which separates the dust. Dust can be separated from the air before it is exhausted to the atmosphere. The device may include one or more of a bag and a cyclone device.

[0003] A driven agitator, usually in the form of a brush bar, is rotatably mounted within the suction chamber of the cleaner head. The brush bar generally comprises an elongated cylindrical core that carries the bristles. The bristles extend radially outward from the core. The suction inlet is located at the base of the cleaner head. The brush bar may be in the form of an opening, usually an elongated rectangular opening, defined by a plate. The brush may be mounted within a suction chamber, so that hair is drawn to some extent through the suction inlet. It stands out.

[0004] The brush bar is primarily used when using the vacuum cleaner to clean carpeted surfaces. The rotation of the brush bar is powered by a power source drawn from the main body of the vacuum cleaner. by an electric motor driven by or through or within the cleaner head The brush bar may be driven by a turbine driven by the incoming airflow. It can be driven by a motor through a port or directly by a motor, The rotation of the brush bar causes the hairs to move towards the surface of the carpet. It is swept along the carpet fibers and located on the surface of the carpet and / or It agitates both the dust and other debris between the fibers of the pet, resulting in a sufficient amount of energy The brush is oriented so that the bristles move from the leading edge of the suction inlet to the trailing edge. While the bar rotates, the rotating bristles are forced backward through the suction inlet and into the suction chamber. Air suction forces air under the base plate and around the brush bar, sweeping the The dust rises from the surface of the pet and then goes through the suction inlet, through the vacuum head and into the separator. Assists in carrying the object.

[0005] It is known to provide a cleaner head with a pair of counter-rotating brush bars. For example, Patent Document 1 discloses a vacuum cleaner having a front brush bar located in front of the head and a rear brush bar located in the rear of the head. and a rear brush bar located at the rear end of the cleaner head. The brush bar rotates in an opposite angular direction, causing the bristles on the front brush bar to sweep backward across the floor and The bristles of the side brush bars sweep forward across the floor surface. A suction chamber is located between the brush bars and The suction port is centrally located at the top of the suction chamber.

[0006] In use, when such a cleaner head is moved forward across the floor, Rice or Cheerios trapped in the air drawn toward the door Large dust particles such as ) (registered trademark) are caused by the dust particles coming into contact with the floor surface. As a result, the suction chamber is unable to pass under the brush bar, and therefore From there, larger particles are drawn along the suction chamber to the ends of the front agitator. If the movement of the vacuum cleaner head is reversed, the dust particles will pass through the suction port. The air enters the suction chamber from both ends of the rear agitator and runs along the suction chamber to the rear agitator. Pass from both ends towards the suction port. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] International Publication No. 2018 / 127680 Brochure Summary of the Invention [Means for solving the problem]

[0008] In a first aspect, the present invention provides a cleaner head for a vacuum cleaner, comprising: The bud is The housing and a front agitator supported for rotation relative to the housing in a first rotational direction; After being supported to rotate relative to the housing in a second rotational direction opposite to the first rotational direction a side agitator; a suction chamber located between the front agitator and the rear agitator; a baffle located within the suction chamber; the suction chamber includes a suction port located above the baffle, and in use, The full guides the air towards the suction port.

[0009] Each agitator includes a brush bar, the brush bar having a longitudinal axis around which the brush bar rotates. The front agitator rotates in a first rotation direction, thereby drawing dust into the suction chamber. The rear agitator rotates in a second direction, thereby sucking in dust. The agitators preferably rotate at the same angular velocity, thereby sweeping the agitated material forward into the agitation chamber. The agitator preferably comprises: The stirrer is preferably cylindrical in shape, and the longitudinal axes of the stirrer are preferably parallel. are arranged so that the cleaner head is horizontal when positioned on the floor surface. The housing preferably has a front opening exposing the first agitator at the front of the cleaner head. and a rear opening at the rear of the cleaner head exposing the second agitator.

[0010] In use, air enters the suction chamber through at least one suction inlet; The suction chamber preferably has a central suction port. the agitator, i.e., midway between the front and rear agitators and midway between the side edges of the suction chamber. As mentioned above, the cleaner head has a port for placing the vacuum in the suction chamber and thus A baffle is provided between the agitators. The baffle is preferably located below the suction port. Preferably, the baffle is positioned so that the suction port is closed during use of the cleaner head. Located vertically below.

[0011] The baffle is preferably disposed on a baffle plate, and more preferably is disposed in a same position as the baffle plate. The baffle plate preferably extends across the suction chamber. The length of the agitator extends parallel to the longitudinal axis of the agitator. The baffle plate is preferably located at the bottom of the suction chamber, thereby The lower surface of the full plate is approximately flush with the lowermost portion of the agitator. The baffle plate is preferably spaced apart from each of the agitators. The front suction inlet is located between the agitator and the baffle plate, and the rear suction inlet is located between the agitator and the baffle plate. and a rear suction inlet at least partially defining a lower suction inlet. , are coplanar, and preferably have the same shape and size.

[0012] The baffle plate is preferably removably connected to the cleaner head. The plate is preferably easy to manufacture and quickly removes any blockages that may occur within the suction port. User accessible snap-fit ​​connections or caps for ease of maintenance The vacuum cleaner head is connected directly to the housing of the vacuum cleaner head by a switch mechanism.

[0013] The baffle plate has a leading edge located adjacent to the front stirrer and a trailing edge located adjacent to the rear stirrer. When the cleaner head is moved forward on the floor, large dust particles are removed by the vacuum cleaner. It is captured in the air drawn towards the front of the vacuum head and directed towards the suction port, where it is blown into the baffle. The cleaner head is guided along the front edge of the floor plate. When the cleaner head is moved backwards on the floor, a large Dust is trapped in the air drawn towards the cleaner head and directed towards the suction port. This guides the trapped dust along the rear edge of the waffle plate, directing it towards the suction port. This promotes direct movement of the air through the baffle, thus improving the performance of the cleaner head. The leading and trailing edges of the plate preferably taper inwardly toward the suction port. This allows the baffle plate to be measured perpendicular to the length of the baffle plate at the center of the baffle plate. ) width is smaller than the width of the baffle plate at its two ends.

[0014] As mentioned above, the baffle plate includes a baffle which, during use, draws air in. The baffle preferably guides the air towards the suction port when the cleaner head is in use. The baffle preferably extends toward the suction port and is preferably The nozzle tapers towards the suction port, thereby directing the airflow towards the suction port. The baffle may be curved or conical. In an embodiment, the baffle is generally pyramidal, with each face of the baffle having a respective gas The air is directed toward the suction port. It tends to enter the cleaner head at the end of the vessel and travel in the opposite direction towards the suction port. Without the baffle, opposing airflows collide in the suction chamber, resulting in a "dead" airflow with low air velocity. There is a risk of creating a "head zone" and large turbulence just below the suction chamber. In such a dead zone, dust trapped in the dead zone can be evacuated. The speed may be insufficient, resulting in the dust stagnation on the floor surface and accumulation of dust on the floor surface. The presence of the baffle guides air into the suction chamber and into the suction port. By redirecting the airflow upwards, the formation of such dead zones can be prevented. The airflow from opposite directions smoothly merges in the suction chamber to suck up the trapped dust. Promotes movement towards the port.

[0015] The cleaner head preferably directs dust from the front agitator end into the suction chamber during use. The front guide member attached to the housing guides the material through the agitator, and the rear agitator guides dust and dirt away from the agitator during use. a rear guide member attached to the housing for guiding the nozzle from the end toward the suction chamber; Prepare.

[0016] The guide members are used to collect dust, particularly but not limited to rice and Cheerios. Large dust particles such as the suction chamber are guided towards the suction chamber by the agitator end. It has been found that this can reduce the risk of obstructing the pathway extending inwardly towards the chamber. Blockage of these paths can prevent large particles from passing into the suction chamber, resulting in the remains on the floor when the equipment is switched off.

[0017] The front and rear guide members are preferably located between the agitators. are preferably located adjacent to respective ends of the front agitator. Preferably, it is located immediately behind the front agitator. The cleaner head is moved forward on the floor surface. When the front guide members are moved, each of the front guide members preferably at least partially together with the front stirrer, Each separate front channel is defined, and the captured dust is passed through the front channel by a front suction. It is guided towards the inlet (and thus towards the suction chamber).

[0018] Similarly, each rear guide member is preferably positioned adjacent a respective end of the rear stirrer. Each rear guide member is preferably located immediately forward of the rear stirrer. When the cleaner head is moved rearwardly over the floor surface, each rear guide member preferably , at least partially together with the rear agitator, define separate rear channels, and along this rear channel towards the rear suction inlet (and thus towards the suction chamber). )You will be guided there.

[0019] The front and rear guide members are preferably supported on a surface such as a hard floor or carpeted surface. configured to rotate relative to the housing in response to changes in the direction of movement of the cleaner head over the surface. The cleaner head preferably comprises a plurality of wheels for engaging a surface and for moving the cleaner head along the cleaning path. The cleaner head is maneuvered by a user over the surface. The agitator has a pair of front wheels and a pair of rear wheels. The wheels are preferably located between the agitators. Each is preferably in the form of a caster, although the wheels may be balls or other rolling members. Each wheel preferably rotates about a first axis perpendicular to the suction inlet to the housing. The cleaner head is configured to rotate relative to the surface, thereby changing the direction in which it moves across the surface. Each wheel preferably rotates about a first axis through an angle of approximately 360°. This allows the cleaner head to be moved freely on the floor surface, for example, by the user. For example, the user can steer the vacuum head forward and backward, left and right, and / or may be moved in a curved direction. Each wheel may also preferably be moved in a first The guide member is configured to rotate relative to the guide member about a second axis perpendicular to the axis of the guide member.

[0020] The front guide member and the rear guide member each rotate about a respective first axis, most preferably about a respective second axis. Preferably, the guide member is arranged to rotate together with the wheel. This allows the cleaner head to be moved forward to optimally guide the dust particles towards the suction chamber. When the front guide member is moved to the position shown in FIG. 1, the front guide member rotates together with the front wheel, guiding the dust toward the suction chamber. When the cleaner head is moved rearward, the rear guide member , which rotates with the rear wheel and defines a rear channel for guiding dust toward the suction chamber. do.

[0021] The front and rear guide members each preferably direct the captured dust towards the suction chamber. The guide surface is preferably perpendicular to the suction inlet, and therefore The wheel is disposed perpendicular to the second axis about which the wheel rotates relative to the guide member.

[0022] As mentioned above, the wheels are preferably in the form of casters, which are preferably The caster wheels are mounted on a support that can rotate relative to the housing about a first axis. The wheel is mounted on an axle that is snap-fitted to the support, and the wheel rotates around the second axis relative to the support. The supports for the caster wheels are arranged facing the suction chamber. The outer surface of the support may conveniently define a guide member for guiding dust, while the outer surface of the support may define a suction chamber. A guide surface may be defined to guide the dust toward the guide surface through collision between the dust and the guide surface. The guide surface is preferably configured to direct the dust towards the suction chamber when the dust bounces off the guide surface. The guide surface is shaped so that the angle of incidence of the moving dust onto the guide surface is adjusted. Preferably, the guide surface has a convex shape. For example, the guide surface may have one of a curved shape and a polygonal shape. The curved shape may be symmetric or asymmetric. The polygonal shape may be a regular polygon or It may be an irregular polygonal shape.

[0023] A proposal for using supports for caster wheels to guide dust towards a suction chamber As an alternative to providing an inner member, the guide member may extend at least partially around the support. The guide member may be attached to the support. Alternatively, the guide member and the support may be attached to the housing. The vacuum cleaner head may be mounted on a common base or other cleaner head component which is rotatable relative to the vacuum cleaner head. This allows the guide members to be made of a different material than the supports for the caster wheels. For example, the support may be made of a relatively hard material such as a plastic material such as polycarbonate. While the guide member may be made of a material, it is preferred that it be made of a relatively soft material such as polyurethane, e.g., TPU. The guide member can be formed from a flexible material. By providing the guide member, the collision can be prevented through the selection of the shape and / or material forming the guide member. The direction and / or speed at which the dust particles move away from the guide member can be increased to a greater extent. It can be controlled easily.

[0024] The front and / or rear guide members may be arranged to guide the dust towards the suction chamber. For example, a passive cleaner head, i.e. a head for removing dust from the floor, A vacuum cleaner head that does not have any moving agitators to agitate dust is The vacuum cleaner may have an arrangement of wheels and guide members for guiding the dust towards the cleaner. For example, a pair of front wheels may be attached to the base plate which defines the suction inlet of the head. a pair of rear wheels may be located adjacent the front edge of the cleaner head; and a pair of rear wheels may be located adjacent the rear edge of the cleaner head. Each wheel may be located adjacent a front corner of the cleaner head, and each wheel may include a guide The guide member is associated with a member, and the guide member rotates with the wheel relative to the housing and is directed toward the suction inlet. In another example, the cleaner head has front and rear wheels, The brush bar may have a single agitator or brush bar located toward the front of the blade, so that the front and The rear guide member is located at the rear of the agitator.

[0025] In a second aspect, the present invention provides a cleaner head for a vacuum cleaner, comprising: The bud is A housing defining a suction chamber, the suction chamber having a downwardly facing suction inlet and suction port. a housing having a port; a plurality of wheels for supporting the cleaner head, each wheel being perpendicular to the suction inlet; a plurality of wheels rotatable relative to the housing about axes; The air intake is directed toward the suction inlet to guide the dust particles into the suction chamber. a plurality of guide members for rotating with each wheel about a first axis; A plurality of guide members arranged Includes.

[0026] The wheels may be mounted directly to the housing of the cleaner head for rotation relative to the housing; Alternatively, the wheels may be rotatably mounted on one or more cartridges connected to the housing. For example, The cleaner head has a first cartridge located on one side of the suction inlet and a second cartridge located on the other side of the suction inlet. and a second cartridge positioned on a corresponding one of the front wheels. and a corresponding one of the rear wheels.

[0027] In embodiments where the cleaner head includes both a front agitator and a rear agitator, each cart The ridges preferably comprise a corresponding one of each of the front and rear guide members. Each cartridge is preferably located between a front agitator and a rear agitator, and is preferably are located separately on the sides of the suction chamber. Each cartridge preferably has a plurality of openings. Each of the openings is located adjacent to one of the agitators and is The trapped dust enters a corresponding one of the channels through this opening, and the dust It is guided along this channel towards the suction chamber.

[0028] If the vacuum cleaner comprises a single agitator, each cartridge also preferably comprises: The pair of guide members are provided with a pair of wheels and a pair of guide members, each of which is adapted to guide the cartridge. Each cartridge is rotatable with a corresponding one of the wheels relative to the cartridge. , preferably located behind the agitator, and preferably on each side of the suction chamber. It is arranged.

[0029] Each cartridge preferably has a first axis of the wheel of that cartridge aligned with the suction inlet. The cleaner head is arranged to be positioned on a predetermined plane perpendicular to the suction inlet. In the case of a stirrer that rotates around an axis extending in the direction of the agitator, this plane is preferably perpendicular to the axis of rotation.

[0030] The features described above in relation to the first aspect of the invention are equally applicable to the second aspect of the invention. and vice versa. The terms "horizontal", "vertical", "forward" and "rearward" are used in this Used in connection with the invention, the relative orientation of the components of the cleaner head in normal use Say the position or location.

[0031] Preferred features of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 2 is a perspective view of the cleaner head; [Figure 2] Figure 2 is a perspective view from below showing the cleaner head; [Figure 3] FIG. 2 is a front view of the cleaner head; [Figure 4] FIG. 2 is a rear view of the cleaner head; [Figure 5] Figure 2 is a top view of the cleaner head; [Figure 6] Figure 2 shows a bottom view of the cleaner head with the castors of the cleaner head in a first orientation relative to the cleaner head housing; [Figure 7] Figure 7 is a cross-sectional view of part of the cleaner head taken along line AA in Figure 6; [Figure 8] Figure 7 is a cross-sectional view of part of the cleaner head taken along line BB in Figure 6; [Figure 9] Figure 7 is a cross-sectional view of part of the cleaner head taken along line CC in Figure 6; [Figure 10(a)] FIG. 2 is a front view of the cleaner head housing; [Figure 10(b)] FIG. [Figure 11] FIG. 10(b) is a cross-sectional view of the housing taken along line DD in FIG. [Figure 12(a)] FIG. 10 is a top view of the baffle plate of the housing. [Figure 12(b)] FIG. 2 is a side view of the baffle plate. [Figure 12(c)] FIG. 2 is a bottom view of the baffle plate. [Figure 13] Figure 10 is a perspective view from above showing the caster cartridge of the cleaner head; [Figure 14] FIG. 10 is a perspective view from below showing the caster cartridge. [Figure 15] Figure 10 is another bottom view of the cleaner head with the casters of the cleaner head in a second orientation relative to the housing; DETAILED DESCRIPTION OF THE INVENTION

[0033] 1 to 15 show an example of a cleaner head 10 for a vacuum cleaner. The board 10 is attached to the housing 12 so that it can rotate relative to the housing 12. The agitator includes a front agitator 14 and a rear agitator 16 connected to the housing 12, and a neck 18 connected to the housing 12. nothing.

[0034] Each of the agitators 14, 16 is in the form of a brush bar having an elongated body 20, The elongated body is fitted with bristles, beating strips or other means 22 for agitating the surface. In this embodiment, the elongated body 20 is made of plush 200% synthetic fiber. The housing 12 is covered with a front agitator 14 so as to expose the front surface of the front agitator 14 and the rear surface of the The agitators 14, 16 are shaped to expose the rear surface of the agitator 16, so that the agitators 14, 16 , may form relatively soft front and rear bumpers for the cleaner head 10.

[0035] The agitators 14 and 16 are driven to rotate in opposite directions about rotation axes X1 and X2. These rotation axes are parallel to each other and extend in the longitudinal direction of each of the agitators 14, 16. When the cleaner head is placed on the floor or other surface to be cleaned, the axis of rotation is The rotation angle direction of the agitators 14 and 16 is set so that dust is transported from the floor surface to the agitators 14 and 16. 7. The air is then swept into the suction chamber 26 located in the The front stirrer 14 rotates relative to the housing 12 in a clockwise direction about an axis X1, and the rear stirrer 16 rotates relative to the housing 12 in a counterclockwise direction about axis X2.

[0036] The cleaner head 10 includes a drive mechanism for driving the rotation of the agitators 14, 16 relative to the housing 12. The drive assembly rotates the agitator relative to the housing 12 at the same angular velocity. The specific details of the drive assembly are not pertinent to the present invention, but are included in the overall The drive assembly includes an electric motor and a motor that applies torque generated by the motor to the agitators 14, 1. 6, and a transmitter for transmitting the same to each of the motors. The motor may be mounted in the housing 12. Alternatively, the motor can be attached to one of the agitators 14, 16. Power is supplied by a vacuum As shown in FIGS. 3 to 5, the neck 18 is located in the vacuum cleaner. The vacuum cleaner has a pair of electrical terminals 28 for engaging electrical contacts in the motor. An electrical cable 30 (shown in FIG. 9) extends between the terminal 28 and the motor. A transmission device transmits torque from the motor to the driven one of the agitators 14, 16. and a gear train for transmitting torque from the driven agitator to the other agitator. A belt and pulley system is provided.

[0037] Rather than using a single motor to drive both agitators 14, 16, the drive assembly , may include two electric motors, each driving a separate agitator 14, 16. Alternatively, rather than using one or more electric motors, the drive assembly may be An air turbine may be provided to generate the torque required to drive 16.

[0038] The neck 18 is pivotally connected to the top of the housing 12. The neck 18 is connected to the agitators 14, 1 The neck 18 rotates around a rotation axis P1 parallel to the rotation axes X1 and X2 of the neck 18 and the housing 12. is pivotally mounted to the housing 12 at a position midway between the agitators 14, 16. The rotation axis P1 of the neck body 18 is equidistant from the rotation axes X1 and X2 of the agitators 14 and 16. The body 18 has a lower neck section 32 pivotally connected to the housing 12 and a lower neck section 34 pivoted perpendicular to the pivot axis P1. The upper neck section 32 is pivotally connected to the lower neck section 32 for pivotal movement about a pivot axis P2. The neck 18 includes a side neck section 34. The neck 18 includes an outlet 38 located at the free end of the neck 18. a conduit 36 ​​extending from the housing 12 to a suction port 40 formed in the top of the housing 12, Through the port, air enters the conduit 36 ​​from the suction chamber 26. The suction port 40 The suction port is centrally located, i.e., the suction port is located midway between the agitators 14, 16 and the suction channel. The free end of the neck 18 is connected to the vacuum cleaner (not shown). ) which can be attached to a wand for maneuvering the cleaner head 10 over a floor surface. and to deliver power to the motor via electrical terminals 28.

[0039] The cleaner head 10 includes a baffle plate 42 located within the suction chamber 26. A baffle plate 42 is located at the bottom of the suction chamber 26 and preferably The bottom surface of the baffle plate 42 is approximately flush with the bottom ends of the agitators 14 and 16. , preferably connected to the housing 12 using a snap-fit ​​connection, The mating connection allows the baffle plate 42 to be repositioned from the housing 12 for maintenance of the cleaner head 10. The baffle plate 42 is preferably mounted on one side of the suction chamber 26. The baffle plate 42 extends longitudinally across the suction chamber 26 from one side to the other. A front edge 44 which, together with the agitator 14, defines a front suction inlet 46 of the suction chamber 26, and a rear agitator a rear edge 48 which, together with the agitator 16, defines a rear suction inlet 50 of the suction chamber 26; As will be explained in more detail below, the baffle plate 42 directs air into the suction chamber 26. A baffle 52 is provided to guide the air toward the port 40. The baffle 52 is a baffle plate. 42, so that the baffle 52 is positioned vertically below the suction port 40. The baffle 52 is positioned on the intake duct 42 and is preferably integral with the baffle plate 42. The suction port 40 extends upward, preferably in a tapered manner. The baffle 52 is generally cone-shaped and includes a plurality of equal-sized surfaces 54, each of which has a This directs a corresponding portion of the air passing through the suction chamber 26 towards the suction port 40. To enter.

[0040] The cleaner head 10 further comprises a plurality of wheels for supporting the cleaner head 10 on a floor surface. The wheel is located between the front agitator 14 and the rear agitator 16. The cleaner head 10 comprises a pair of front wheels 56 and a pair of rear wheels 58. The front wheels 56 are The front wheels are positioned on either side of the side suction opening 46 and are adjacent to the corresponding end of the front agitator 14. The rear wheels 58 are located immediately behind the front wheels 56 and on either side of the rear suction opening 50. Each rear wheel 58 is located adjacent a different end of the rear agitator 16.

[0041] With particular reference to Figures 13 and 14, in this embodiment, the wheels 56, 58 are Each of the front wheels 56 is mounted on a front support 60, and the rear wheels 58 and Each of the supports 60 and 62 is attached to a rear support 62. 58 are connected to the agitator 14. , 16 perpendicular to the rotation axes X1, X2 and thus perpendicular to the front and rear suction inlets 46, 50 The wheels 56 and 58 are rotatable relative to the housing 12 about a first rotation axis W1. are attached to the respective supports 60, 62 by axles 64 snap-fitted to the supports 60, 62. As a result, each of the wheels 56 and 58 is orthogonal to the first rotation axis W1. The wheels 56 are capable of rotating relative to the supports 60, 62 about the second rotation axis W2. , 58 are movable about the first and second rotation axes W1 and W2, The rod 10 may be moved in any selected direction, for example, back and forth, side to side, or along a curved path. , and can be controlled.

[0042] While the supports 60, 62 may be attached directly to the housing 12, in this embodiment, the vacuum cleaner head The bolt 10 includes a pair of cartridges 66, 68. 70, each of which is connected to a corresponding one of the front wheels 56 and the rear wheel and a corresponding one of the wheels 56, 58. 2 are mounted on cartridges 66, 68 for rotation relative to the cartridges. Also referring to FIG. 6, as described in more detail below, cartridges 66, 68 and Each has opposite end walls 72 each having a respective opening 74, 76. The supports 60, 62 are mounted on cartridges 66, 68, whereby , each front support 60 is positioned adjacent a respective front opening 74, and each rear support Each of the bodies 62 is positioned adjacent a respective rear opening 76 .

[0043] In use, air from the external environment is drawn into the vacuum cleaner by the action of the suction generator located within the vacuum cleaner. The cleaner head 10 is positioned on the floor surface. Larger particles such as rice or Cheerios® will not come into contact with the floor. Because of this, the material cannot pass under the rotating agitator. Larger dust particles are attracted to the airflow from the ends of the agitators 14, 16 inwardly toward the suction port 40. (hereinafter referred to as "side airflow") into the suction chamber 26. enter.

[0044] The cleaner head 10 is moved forward toward a relatively large pile of dust located on the floor surface. When this happens, such dust typically gets trapped in the side airflows, which then get trapped in the front intake. The first side airflow enters the suction chamber 26 through the inlet 46. The first side airflow is directed through the first end of the cartridge 66 through the front opening 74 and through the front suction inlet 46. The second side airflow flows from the first end of the front agitator 14 into the cartridge chamber 26. through the front opening 74 of the edge 68 and into the suction chamber 26 via the front suction inlet 46 The two side air streams similarly enter the suction chamber 26 around the end of the rear agitator 16. However, when the cleaner head is moving forward, these additional side airflows can catch larger particles. tend not to contain

[0045] Each of the supports 60, 62 serves to suck up dust trapped in the respective dust-laden side airflows. The outer surfaces of the supports 60 and 62 form guide members for guiding the support toward the chamber 26. It is shaped to define separate guide surfaces 78, 80. The guide surfaces 78, 80 are When dust collides with the guide surfaces 78 and 80, the dust is sucked into the suction chamber 26. It is shaped to bounce back towards the target.

[0046] Referring first to FIG. 6, the cleaner head 10 moves forward (in the direction of arrow A1) on the floor surface. When the wheels 56, 58 are in motion, the frictional force generated between the floor surface and the wheels 56, 58 is The wheel supports 60, 62 are rotated in the orientation shown in FIG. The guide surfaces 78 are arranged in the front along with the front agitator 14 and the cartridges 66, 68. The side opening 74 is formed to define a relatively narrow channel 82 extending to the suction chamber 26. The dust-laden side airflow enters the channel 82 and is directed toward the guide surface 78 of the front support 60. The width of the channel 82 guides the dust towards the front suction inlet 46. 2, which tends to accelerate the airflow as it moves along the It has the function of facilitating entry into the drawing chamber 26.

[0047] Reverse the direction of movement of the vacuum cleaner head, thereby moving the vacuum cleaner head towards the remaining dust particles. When the rear agitator 16 is moved rearward (in the direction of arrow A2 shown in FIG. 15), The two side air streams that enter the suction chamber 26 from around the ends contain more dust. The friction force generated between the floor surface and the wheels 56, 58 is The wheel supports 60, 62 are rotated 180° to the orientation shown in FIG. The guide surfaces 80 are arranged in a rearward direction along with the rear agitator 16 and the cartridges 66, 68. The side opening 76 is formed to define a relatively narrow channel 84 extending to the suction chamber 26. When the dust-laden side airflow enters the channel 84, it is guided by the rear support 62. The surface 80 guides the dust towards the rear suction inlet 50 .

[0048] Within the suction chamber 26, the leading edge 44 of the baffle plate 42 is guided through a channel 82 The dust particles that are taken into the two side airflows that enter the suction chamber 26 are directed to the suction port 40. While the trailing edge 48 of the baffle plate 42 guides the air toward the suction chamber through the channel 84, The dust particles that are taken in the two side airflows that enter the nozzle 26 are guided toward the suction port 40. Towards the centre of the suction chamber 26, each of the four side airflows passes through a separate baffle 52. The surface 54 of the nozzle guides the nozzle upwards toward the suction port 40, and the trapped dust is removed from the nozzle. The side airflows merge downstream of the baffle 52 and are directed toward the conduit 36 ​​of the 18. 6 and enters the vacuum cleaner which separates the dust from the air.

Claims

1. 1. A cleaner head for a vacuum cleaner, comprising: The housing and a front agitator supported for rotation relative to the housing in a first rotational direction; a support member for supporting the housing so as to rotate in a second rotational direction opposite to the first rotational direction; a rear agitator; a suction chamber located between the front agitator and the rear agitator; a baffle located within the suction chamber; wherein the suction chamber includes a suction port located above the baffle, and wherein in use a cleaner head, wherein the baffle directs air towards the suction port.

2. 2. The cleaner head of claim 1, wherein the baffle is located directly below the suction port. Do.

3. 3. The cleaning device of claim 1 or claim 2, wherein the baffle extends toward the suction port. Debris removal head.

4. A cleaner head according to any preceding claim, wherein the baffle is generally cone-shaped. 。

5. The baffle is disposed on a baffle plate that extends across the suction chamber. A cleaner head according to any preceding claim.

6. 6. The vacuum cleaner of claim 5, wherein the baffle plate is removably connected to the housing. head.

7. 7. The method of claim 5, wherein the baffle plate is disposed at the bottom of the suction chamber.

2. A vacuum cleaner head according to claim 1 .

8. the baffle plate has a front suction inlet located between the baffle plate and the front agitator; a rear suction inlet located between the baffle plate and the rear agitator; A cleaner head according to any one of claims 5 to 7, wherein

9. The front suction inlet and the rear suction inlet have substantially the same size and shape.

9. A cleaner head according to claim 8.

10. The baffle plate has a leading edge adjacent to the front stirrer and a trailing edge adjacent to the rear stirrer. and a leading edge and a trailing edge, both of which are tapered inwardly toward the suction port. A cleaner head according to any one of claims 5 to 9 which is in the form of a groove.

11. A front agitator is provided to guide dust from the end of the front agitator towards the suction chamber during use. a front guide member attached to the housing, and a guide member for guiding dust from the end of the rear agitator to the a rear guide member attached to the housing for guiding the nozzle toward the suction chamber; A cleaner head according to any preceding claim.

12. The front guide members are positioned adjacent to respective ends of the first agitator, 2. The method of claim 1, wherein a rear guide member is located adjacent a respective end of the second agitator.

2. The cleaner head according to claim 1.

13. The front guide member and the rear guide member are each rotatable relative to the housing.

13. A cleaner head according to claim 11 or claim 12.

14. The front guide member and the rear guide member each have an axis perpendicular to the rotation axis of the agitator.

14. A cleaner head according to claim 13, which is rotatable relative to the housing around a shaft.

15. a plurality of cartridges connected to the housing, each cartridge being one of the front guide members and the rear guide member mounted to rotate relative to the 15. A cleaner head as claimed in claim 13 or claim 14, including one of the guide members.

16. A cleaner head according to claim 15, wherein each cartridge engages a respective side of the baffle. 。

17. The front guide members, together with the front agitators, respectively, move the captured dust to the front suction Each of the rear guide members defines a channel that guides the rear stirring member toward the inlet. and together with the container, define channels for guiding the captured dust toward the rear suction inlet. A cleaner head according to any preceding claim.

18. The front guide member and the rear guide member each have a corresponding one of the channels.

18. A cleaner head as claimed in claim 17, including a convex guide surface for defining

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