CN201119845Y - Cleaning head for electric vacuum cleaner and electric vacuum cleaner using the same - Google Patents

Abstract

The utility model provides a dust-absorbing head which can not blow away the dust on the front side of the dust-absorbing head and can collect dust with high efficiency, and an electric vacuum cleaner equipped with the dust-absorbing head. The dust suction head of the present utility model comprises: the suction chamber (9) that is formed in the dust suction head, the rotatable rotating brush (10) that is located at the position apart from its rotation radius of the front wall of the suction chamber side, and is arranged on The air duct (13) between the top of the suction head and the suction chamber. The air duct is arranged to face the opening (14) at the front side part of the suction head and at the front side of the rotation center of the rotating brush with respect to the suction chamber, and at the rear on the top surface of the duct and the suction head. The component adjustment port (15) of the external opening is connected. A rotatable regulating valve (16) for opening and closing switching is provided between the opening on one side of the duct (6) of the air duct and the air volume regulating port. In this way, the external airflow from the opening becomes the conveying airflow, preventing the dust at the front corners from being blown outward.

Description

Cleaning head for electric vacuum cleaner and electric vacuum cleaner using the same

technical field

The utility model relates to a dust-absorbing head for an electric vacuum cleaner with excellent cleaning performance for garbage in the front corner, and an electric vacuum cleaner using the dust-absorbing head.

Background technique

As shown in Figure 4, the existing dust-absorbing head for electric vacuum cleaners is provided with: a dust-absorbing head body 18 connected to the body of the vacuum cleaner through a connecting pipe 17; The suction port 19 communicated by the connecting pipe 17; and the ventilation passage 20 which is arranged near the suction port 19, has an air inlet on the upper part and an air jet port on the side of the cleaning surface. In addition, in such an electric vacuum cleaner, the cross-sectional area of the ventilation passage 20 gradually decreases toward the air injection port (for an example, refer to Japanese Patent Laid-Open Publication No. Hei 11-89767).

However, in the above-mentioned existing cleaning head for electric vacuum cleaners, due to the structure in which air is sprayed from the ejection port to the part close to the ground, the air ejected from the ejection port will cause the dust to scatter, resulting in failure to The problem that the garbage collected by the suction air will be scattered.

Utility model content

In order to solve the above-mentioned problems existing in the prior art, the dust-absorbing head of the present invention comprises: a dust-absorbing head body for an electric vacuum cleaner; a suction port opening downward on the bottom surface of the dust-absorbing head; The suction chamber inside the dust head; a freely rotatable rotating brush that is adjacent to the suction inlet and is located at a position close to the radius of rotation from the inside front wall of the suction chamber; is arranged behind the dust suction head a duct on the side and near the center in the length direction; and an air duct provided between the upper part of the cleaning head and the suction chamber. The air duct is provided to communicate with an opening located in the front portion of the suction chamber in the suction head and opened in front of the rotation center of the rotating brush, and communicates with the duct in the rear portion. It communicates with the air volume regulating port that opens outward on the top surface of the dust suction head; moreover, there is a switchable opening and closing switch between the opening on the duct side of the air duct and the air volume regulating port. Turn the regulator valve.

With the above-mentioned structure, the suction airflow generated in the suction port by the opening provided in front of the suction chamber can also be generated in front, and the rotating brush is provided all the way to the vicinity of the front side of the cleaning head. In this way, the dust on the front side of the cleaning head can be sucked up from the opening while being swept up by the rotating brush, so that the dust in the front can be collected very efficiently.

In addition, when the negative pressure in the suction chamber rises, a large negative pressure will be applied to the side of the air duct, which may cause the suction head to be sucked to the surface to be cleaned. However, the regulating valve in the utility model will allow the air volume regulating port to communicate with the air duct when a large negative pressure is generated in the air duct, suck in external air, and close the opening on one side of the conduit. In this way, the air intake channel will be switched from the dust suction channel to the external air inflow channel, and the negative pressure in the suction chamber will be reduced, thereby preventing adsorption from occurring. At the same time, by sending the outside air to the front of the suction chamber, the outside air flow will become the conveying air flow that guides the dust to the direction of the suction chamber, thereby preventing the mechanical force of the rotating brush that is set all the way to the front side wall from pushing the dust at the front corner to the direction of the suction chamber. Sweeping outside enables efficient dust collection.

The technical effect that the utility model produces is as follows. After adopting the utility model, the suction airflow generated in the suction port by the opening in the front of the suction chamber can also be generated in front, and the rotating brush is always arranged near the front side of the cleaning head. In this way, the dust on the front side of the cleaning head can be sucked up from the opening while being swept up by the rotating brush, so that the dust in the front can be collected very efficiently. In addition, when the negative pressure in the suction chamber rises, a large negative pressure will be applied to the side of the air duct, which may cause the suction head to be sucked to the surface to be cleaned. However, the regulating valve in the utility model will allow the air volume regulating port to communicate with the air duct when a large negative pressure is generated in the air duct, suck in external air, and close the opening on one side of the conduit. In this way, the air intake channel will be switched from the dust suction channel to the external air inflow channel, and the negative pressure in the suction chamber will be reduced, thereby preventing adsorption from occurring. At the same time, by sending the outside air to the front of the suction chamber, the outside air flow will become the conveying air flow that guides the dust to the direction of the suction chamber, thereby preventing the mechanical force of the rotating brush that is set all the way to the front side wall from pushing the dust at the front corner to the direction of the suction chamber. Sweeping outside enables efficient dust collection.

The best embodiment of the present utility model is as follows. The vacuum cleaner head described in Embodiment 1 of the present utility model includes: a dust collector head for an electric vacuum cleaner; a suction port opening downward on the bottom surface of the dust collector head; a suction port formed inside the dust collector head; chamber; a rotatable rotating brush adjacent to the suction inlet and located at a position close to the radius of rotation from the inner front wall of the suction chamber; a duct near the center in the direction; and an air duct provided between the upper part of the suction head and the suction chamber. The air duct is provided to communicate with an opening located in the front portion of the suction chamber in the suction head and opened in front of the rotation center of the rotating brush, and communicates with the duct in the rear portion. It communicates with the air volume regulating port that opens outward on the top surface of the dust suction head; moreover, there is a switchable opening and closing switch between the opening on the duct side of the air duct and the air volume regulating port. Turn the regulator valve. In this way, the suction airflow generated in the suction port by the opening provided in front of the suction chamber can also be generated in the front, and the rotating brush is provided all the way to the vicinity of the front side of the cleaning head. In this way, the dust on the front side of the cleaning head can be sucked up from the opening while being swept up by the rotating brush, so that the dust in the front can be collected very efficiently. In addition, when the negative pressure in the suction chamber rises, a large negative pressure will be applied to the side of the air duct, which may cause the suction head to be sucked to the surface to be cleaned. However, the regulating valve in the utility model will allow the air volume regulating port to communicate with the air duct when a large negative pressure is generated in the air duct, suck in external air, and close the opening on one side of the conduit. In this way, the air intake channel will be changed from the dust suction channel to the inflow channel of external air, and the negative pressure in the suction chamber will be reduced, thereby preventing adsorption from occurring. At the same time, by sending the outside air to the front of the suction chamber, the outside air flow will become the conveying air flow that guides the dust to the direction of the suction chamber, thereby preventing the mechanical force of the rotating brush that is set all the way to the front side wall from pushing the dust at the front corner to the direction of the suction chamber. Sweeping outside enables efficient dust collection.

Embodiment 2 is specifically that a plurality of openings described in Embodiment 1 are provided, and the air duct is divided and introduced into the openings respectively. In this way, according to the opening provided in the front of the suction chamber, the suction airflow generated at the suction port can also be generated in front, and respective air passages are formed in a plurality of openings to equalize the negative pressure and let the suction generated on the opening The wind force of the airflow becomes uniform, which improves the dust collection capacity and effectively collects the dust on the front side.

Embodiment 3 is specifically that the vacuum cleaner head in Embodiment 1 includes: a suction port communicated with the duct and the suction chamber, the suction port is divided, one side communicates with the suction chamber, and the other side communicates with the air duct , the longitudinal cross-sectional shape of the air duct is set to gradually become smaller facing the front of the cleaning head. In this way, the opening set in front of the suction chamber and the suction port form an air channel, so that the negative pressure generated by the duct can be effectively applied to the air channel, and the vicinity of the opening is in a narrow shape, which produces the effect of a nozzle and increases the wind speed. If it is improved, the suction air force of the opening can also be increased, so the dust on the front side can be effectively collected.

Embodiment 4 is specifically an electric vacuum cleaner, which includes: the vacuum cleaner head described in any one of the above-mentioned schemes 1 to 3, which is connected to an electric fan built in the body of the vacuum cleaner for attracting airflow. In this way, the dust in the room up to the corner can be efficiently collected without omission, so that an electric vacuum cleaner that is convenient to use can be provided.

Description of drawings

Fig. 1 is a central longitudinal sectional view of a dust suction head in an embodiment of the present invention,

Fig. 2 is a top view of the above-mentioned dust suction head after the upper part is removed,

Fig. 3 is the overall perspective view of the electric vacuum cleaner with the above-mentioned dust-absorbing head installed,

Fig. 4 is a central longitudinal sectional view of a conventional cleaning head.

Among the above-mentioned accompanying drawings, 1 is a dust suction head, 6 is a conduit, 8 is a suction port, 9 is a suction chamber, 10 is a rotating brush, 13 is an air duct, 14 is an opening, 15 is an opening, and 16 is a regulating valve.

Detailed ways

An embodiment of the utility model is described in detail below with reference to the accompanying drawings. It should be noted that the technical scope of the present utility model is not limited by this embodiment.

(Example)

Fig. 1 is a central longitudinal sectional view of the dust-absorbing head in an embodiment of the present invention, Fig. 2 is a top view of the dust-absorbing head in the above-mentioned embodiment after the upper part is removed, and Fig. 3 is a view with the above-mentioned dust-absorbing head installed The overall oblique view of the electric vacuum cleaner.

In the overall oblique view of FIG. 3 , 1 is the dust-absorbing head of the present invention, and the dust-absorbing head 1 is connected with the electric vacuum cleaner 2 through an extension pipe 4 and a hose 3 . The interior of the hose 3 and the extension pipe 4 is hollow, and the electric fan 5 arranged on the rear side of the electric vacuum cleaner 2 sucks and discharges the air inside, making the inside a vacuum state, and applying negative pressure to generate suction. airflow.

As shown in Fig. 1 and Fig. 2, a duct 6 that can freely rotate in the front, rear, left, and right directions is arranged at the rear portion of the dust suction head 1 in the front and rear directions and substantially in the middle. The inside of the conduit 6 is hollow, one end of which is connected to the electric vacuum cleaner 5 through the extension tube 4 and the hose 3 , and the other end is connected to the inside of the cleaning head 1 . Wherein, the opening in the conduit 6 connected with the interior of the dust suction head 1 is the suction opening 7 .

On the other hand, the structure of the cleaning head 1 is: the bottom surface is provided with a suction port 8 opening downward, the suction port 8 is connected to the suction port 7 , and the space formed inside the cleaning head 1 constitutes a suction chamber 9 . The suction chamber 9 is provided with a freely rotatable rotating brush 10, the rotating brush 10 is adjacent to the suction port 8, and is supported on a rotating shaft (not shown) whose distance from the inside front wall of the suction chamber 9 is about its radius of rotation superior. The rotating brush 10 is powered by a driving source 11 arranged on either side of the conduit 6 or coaxially with the conduit 6, and can rotate. Generally, the driving source 11 is arranged on either side of the conduit 6 , and a belt 12 is laid between the rotating brush 10 and the driving source 11 . In addition, the drive source 11 generally uses an electric motor, a turbine mechanism, or the like.

The space formed between the inside of the top surface of the cleaning head 1 and the partition plate arranged on the top of the suction chamber 9 is an air duct 13 . Since the suction chamber 9 is approximately cylindrical, the air duct 13 is also formed along the cylindrical shape, and the vertical cross-sectional shape of the air duct 13 gradually narrows toward the front of the cleaning head 1 . The air passage 13 is provided with a plurality of openings at the front portion of the suction chamber 9 to form an opening 14 so that the air passage 13 communicates with the suction chamber 9 . The opening 14 is located in front of the rotation center of the rotating brush 10 and opens along the inner side of the front wall of the suction chamber 9 . The best solution is that the opening 14 is provided with three or more openings in the length direction of the cleaning head 1 , and the specific positions are the central part and the left and right sides of the cleaning head 1 in the length direction.

As shown in FIG. 2 , a plurality of openings 14 respectively form air ducts 13 , and each air duct 13 gathers together at the rear of the cleaning head 1 . In other words, the air ducts 13 are arranged to be gathered in one place at the rear, and then branched to the respective openings 14 .

At the confluence of the plurality of air ducts 13, an opening facing the suction port 7 is provided. Air duct 13 is provided to communicate suction port 7 with opening 14 . In addition, an air volume regulating opening 15 is provided on the top surface of the cleaning head 1 . The air volume regulating opening 15 is located near the confluence of the air duct 13 , opens to the outside, and communicates with the air duct 13 . In this way, the rear portion of the air duct 13 has two openings, the suction port 7 of the duct 6 and the air volume adjustment port 15 .

In order to switch/close each opening, the cleaning head 1 is also provided with a freely rotatable regulating valve 16 . Specifically, the regulating valve 16 is set so as to open the air volume regulating port 15 when the suction port 7 is blocked, or to perform a closing/opening switching operation in reverse.

Generally speaking, the regulating valve 16 is installed on a rotatable shaft, and the closing and opening operations are performed by turning. The specific structure of the regulating valve 16 can be that when the pressure in the air duct 13 is greater than the atmospheric pressure, the valve is closed under the force of a spring or the like from below, and can be opened when a negative pressure state is added, and the valve itself Can turn up and down; Or the structure that can complete the same operation under the active force of the leaf spring (the structure that is energized by the spring is not shown in the figure).

The operation and function of the cleaning head with the above structure will be described below. When the electric vacuum cleaner 2 is used for vacuuming, the electric blower 5 works, sucks the air in front of the electric blower 5, and then discharges it to the rear, making it a vacuum state, and applying a negative pressure to generate a suction airflow. Specifically, such negative pressure is transmitted to the cleaning head 1 through the hose 3 and the extension tube 4, and the generated negative pressure becomes a suction airflow in the cleaning head 1, attracting the dust on the surface to be cleaned.

The negative pressure is transmitted first through the conduit 6 , then through the suction opening 7 and the suction chamber 9 into the suction opening 8 . The dust is mainly collected by the suction port 8.

When the drive source 11 is a motor, the motor can receive power from the electric vacuum cleaner 2 to rotationally drive the rotating brush 10 . On the other hand, when the driving source 11 is a turbine mechanism, the turbine mechanism drives the suction airflow generated by the negative pressure, and the power is transmitted to the rotating brush 10 to rotate the rotating brush 10 . When the rotating brush 10 rotates, it not only sweeps and collects the dust on the surface to be cleaned by mechanical force, but also polishes the surface to be cleaned. The dust swept up by the rotating brush 10 is sucked into the main body of the vacuum cleaner through the suction chamber 9 .

On the other hand, the generated negative pressure is also transmitted to the air duct 13 through the suction port 7 . Under the action of the negative pressure generated in the air passage 13, air flows in from each opening 14 to generate a suction airflow, which pushes up the regulating valve 16 and makes the air volume regulating port 15 into a closed state. In this state, each opening 14 generates a suction airflow along the front wall of the suction chamber 9 to suck up the dust in front of the cleaning head 1 . Simultaneously, the rotation direction of the front side of the rotating brush 10 is to move from bottom to top when viewed from the side of the cleaning head 1, and the dust swept up by the rotating brush 10 will be sent into the opening 14, so the dust collection ability can be further improved .

By performing the above operations, the suction airflow generated by the opening 13 in front of the suction chamber 9 can concentrate on the dust in front of the cleaning head 1, and the mechanical force of the rotating brush 10 can also be added, so it can be The dust in front of the cleaning head 1 is strongly collected.

In addition, in some states of the surface to be cleaned, the cleaning head 1 may be adsorbed on the surface to be cleaned, and the inside of the suction chamber 9 is close to a vacuum state. At this time, the suction port 7 and the air duct 13 reach the same negative pressure, and the regulating valve 16 is pressed down under the action of the high negative pressure in the air duct 13 and the air flowing in from the outside, so that the air volume adjustment port 15 is opened, and the suction The port 7 side is closed, the outside air communicates with the opening 14, and an outside air flow is generated.

By making the external air flow flow into the suction chamber 9, the negative pressure in the suction chamber can be reduced, preventing the suction head from being sucked to death on the ground. Simultaneously, the external air flow will also become the conveying air flow that guides the dust to the direction of the suction chamber 9, thereby preventing the external air flow from blowing to the front side, and the mechanical force of the rotating brush 10 that is arranged on the top will always remove the dust in the front corner. The phenomenon of scattering to the outside occurs, so that dust can be efficiently collected.

In addition, by adjusting the opening amount of the regulating valve 16 by the negative pressure inside the suction chamber 9, the air volume of the outside air introduced into the suction chamber 9 from the opening 14 at the front of the air duct 13 can be adjusted to increase the size of the suction head 1. When touching the corner, the opening of the adjustment valve 16 due to the negative pressure effect of the rise is opened, and the external air volume is improved, so that the negative pressure inside the suction chamber 9 is reduced. Afterwards, at the moment when the cleaning head 1 leaves the corner, the regulating valve 16 moves toward the closing direction, and the negative pressure will suddenly become higher, and the dust will be strongly trapped under the action of the suction airflow generated by it, coupled with the rotation The mechanical force of the brush 10 can strongly collect the dust in front of the cleaning head 1 .

In addition, when the front part of the cleaning head 1 touches the wall or the like on the carpet with long hairs and high density to increase the sealing degree, it is easy to form the condition for the vacuum pressure of the cleaning head 1 to rise.

To sum up, the dust-absorbing head for electric vacuum cleaner of the present invention and the electric vacuum cleaner using the dust-absorbing head can effectively and completely capture the dust in the room to the corner, and it is very convenient to use and can always be easily for vacuuming operations. The utility model can be widely used in various electric vacuum cleaners for household use and business use.

Claims (4)

1. A dust-absorbing head for a vacuum cleaner, characterized in that it comprises: Cleaning heads for electric vacuum cleaners; a suction port opening downward on the bottom surface of the suction head; a suction chamber formed inside the suction head; A freely rotatable rotating brush adjacent to the suction inlet and located at a position close to the radius of rotation from the front wall inside the suction chamber; a duct disposed on the rear side of the suction head and located near the center in the lengthwise direction; and an air duct arranged between the upper part of the suction head and the suction chamber, The air duct is provided to communicate with an opening located in the front portion of the suction chamber in the suction head and opened in front of the rotation center of the rotating brush, and communicates with the duct in the rear portion. It communicates with the air volume regulating port opened outward on the top surface of the dust suction head; moreover, a rotatable switch for opening and closing is provided between the opening on the duct side of the air duct and the air volume regulating port. regulator valve. 2 . The cleaning head for a vacuum cleaner according to claim 1 , wherein there are multiple openings, and the air ducts are divided and introduced into the openings respectively. 3 . 3. The vacuum cleaner head according to claim 1 or 2, characterized in that it also includes a suction port communicating with the conduit and the suction chamber, the suction port is divided into one side communicating with the suction chamber and the other side It communicates with the air duct, and the longitudinal section shape of the air duct is set to gradually narrow toward the front of the cleaning head. 4. An electric vacuum cleaner, characterized by comprising: the vacuum cleaner head according to any one of claims 1-3, which is connected to an electric fan built in the body of the vacuum cleaner for sucking airflow.

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