CN102970911A - Suction tool for electric vacuum cleaner and electric vacuum cleaner provided with same - Google Patents

Abstract

Disclosed is a suction tool for an electric vacuum cleaner provided with: a suction tool main body which comprises an opening (12a) in a lower surface, and comprises a suction chamber (12) thereinside that communicates with the opening (12a); and a connection pipe (18) which is attached to the suction tool main body and communicates with the suction chamber (12). An air intake port (35) for taking in external air is provided in the external surface of the suction tool main body, and an air exhaust port (38) for providing communication between the air intake port (35) and the suction chamber (12) is provided inside the suction tool main body. A sound absorption chamber is provided adjacent to but separately from a communication passage (39) for providing communicating between the air intake port (35) and the air exhaust port (38) of the suction tool main body.

Description

Suction piece for electric vacuum cleaner and electric vacuum cleaner with the suction piece

technical field

The present invention relates to a suction piece for an electric vacuum cleaner and an electric vacuum cleaner provided with the suction piece for an electric vacuum cleaner.

Background technique

Conventionally, with regard to electric vacuum cleaners, studies have been conducted to reduce the wind noise of the suction wind sucked in from the outside air inlet provided in the front part of the suction tool body.

For example, a structure in which a sound absorbing member having an air permeability and a sound-absorbing effect is provided on a top surface of a suction chamber provided inside a suction tool main body and has an opening below is proposed.

Fig. 5 is a side sectional view showing the structure of such a conventional vacuum cleaner suction tool. As shown in FIG. 5 , the suction piece main body 101 is composed of an upper case 102 constituting an upper portion of the suction piece main body 101 and a lower case 103 constituting a lower portion of the suction piece main body 101 .

A suction chamber 105 opening downward is formed in the lower case 103 . In addition, an arm 106 movable up and down is attached to the rear center of the suction tool body 101 , and the suction chamber 105 communicates with the rod 106 through a connection passage 109 provided in the suction tool body 101 .

On the upper case 102, an external air inlet 125 for communicating the suction chamber 105 with the external environment is opened at the front of the suction tool main body 101 so as to face the connection passage 109 . On the top surface of the suction chamber 105, a sound absorbing member 126 having air permeability and sound-absorbing effect is provided. One end of the sound absorbing member 126 covers the external air inlet 125 , and the other end extends to the vicinity of the connecting passage 109 , and the sound absorbing member 126 is fixed to the upper case 102 by adhesive bonding (for example, refer to Patent Document 1).

In such a conventional vacuum cleaner suction tool, when the user starts the operation of the vacuum cleaner, dust-containing air is sucked from the lower surface of the suction chamber 105 and air is also sucked from the outside air inlet 125 .

Since the outside air inlet 125 is covered by the sound absorbing member 126 , the air sucked in from the outside air inlet 125 flows into the suction chamber 105 through the sound absorbing member 126 . At this time, the air sucked from the external air inlet 125 is diffused by the sound absorbing member 126 , causing turbulence in the air passing through the sound absorbing member 126 . Then, the turbulent air collides with the air flowing in from the lower surface of the suction chamber 105 in the suction chamber 105 , further generating turbulent flow and increasing noise such as wind noise in the suction chamber 105 .

Patent Document 1: Japanese Patent Application Laid-Open No. 11-318778.

Contents of the invention

The present invention provides a suction tool for an electric vacuum cleaner capable of improving the quietness of the suction tool for an electric vacuum cleaner and reducing noise during cleaning operations, and an electric vacuum cleaner provided with the suction tool for an electric vacuum cleaner.

The suction tool for an electric vacuum cleaner according to the present invention has: a suction tool main body having an opening on the lower surface and a suction chamber inside communicating with the opening; The suction chambers are connected. On the outer surface of the suction tool body, there is a suction port for sucking in outside air, and inside the suction tool main body, there is a discharge port for connecting the suction port and the suction chamber. A sound absorption chamber is provided independently of the communication passage in the vicinity of the communication passage connecting the suction port and the discharge port of the suction tool main body.

According to the present invention, it is possible to provide a suction tool for a vacuum cleaner capable of improving the quietness of the suction tool for a vacuum cleaner and reducing noise during cleaning work, and a vacuum cleaner including the suction tool for a vacuum cleaner.

Description of drawings

FIG. 1 is a perspective view showing an overall configuration of a vacuum cleaner having a suction tool for a vacuum cleaner according to an embodiment of the present invention.

Fig. 2 is a side sectional view showing the structure of the vacuum cleaner suction tool in the embodiment of the present invention.

3 is a plan view showing the structure of the vacuum cleaner suction tool in the embodiment of the present invention in a state where an upper member is removed.

4 is a bottom view showing the structure of the vacuum cleaner suction tool in the embodiment of the present invention.

Fig. 5 is a side sectional view showing the structure of a conventional vacuum cleaner suction tool.

Detailed ways

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an overall configuration of a vacuum cleaner having a suction tool for a vacuum cleaner according to an embodiment of the present invention. Fig. 2 is a side sectional view showing the structure of the vacuum cleaner suction tool in the embodiment of the present invention. 3 is a plan view showing the structure of the vacuum cleaner suction tool in the embodiment of the present invention in a state where an upper member is removed. In addition, FIG. 4 is a bottom view showing the structure of the vacuum cleaner suction tool in the embodiment of the present invention.

As shown in FIG. 1 , electric vacuum cleaner 100 has vacuum cleaner main body 2 , suction tool 1 , hose 8 , and extension pipe 9 .

The suction member 1 sucks the dust on the surface to be cleaned. One end of the hose 8 is connected to the main body 2 of the vacuum cleaner, and the other end is connected to the extension pipe 9 . One end of the extension tube 9 is connected to the other end of the hose 8 , and the other end of the extension tube 9 is connected to the suction piece 1 .

The cleaner body 2 has an electric blower chamber 3 and a dust collecting unit 4 . The electric blower chamber 3 houses an electric blower for generating suction wind. The dust collecting part 4 is arranged on the upstream side of the electric blower chamber 3, and collects the dust suctioned from the suction tool 1 by the suction wind generated by the electric blower.

Moreover, the dust collection port 5 to which the end of the hose part 6 of the hose 8 is connected is provided in the front part of the cleaner main body 2. As shown in FIG.

The hose 8 has the hose part 6, the hose handle part 7, and the holding part 7a. One end of the hose part 6 is connected to the dust collecting port 5 of the vacuum cleaner main body 2, is formed of a flexible material, and can move flexibly. The hose handle part 7 is provided at the other end of the hose 6, and an electric device for controlling the main body 2 of the vacuum cleaner and the suction piece 1 is built in. The holding part 7a is provided on the hose handle part 7, and is used for holding when the user uses the electric vacuum cleaner 100. As shown in FIG.

The extension pipe 9 connects the hose handle portion 7 and the suction piece 1, and is formed of a rigid material. A power supply line for supplying power to the suction element 1 is embedded in the extension tube 9 .

As shown in Figure 2, the suction piece 1 consists of an upper member 10 forming the upper part of the main body of the suction piece 1, a lower member 11 constituting the lower part of the main body of the suction piece 1, and being arranged on the suction piece 1 in a manner that can move up and down. The central part of the rear part and for the connection pipe 18 that the extension pipe 9 is connected constitutes.

A rotary brush 15 for sweeping up dust on a surface to be cleaned, a motor 13 for rotating the rotary brush 15 , and a control circuit 14 for controlling the motor 13 are incorporated in the suction tool 1 . In addition, bumpers 16 are provided on the outer periphery of the suction tool 1 . When the upper member 10 and the lower member 11 are combined, the motor 13 , the control circuit 14 , the rotating brush 15 and the damper 16 are sandwiched and held by the upper member 10 and the lower member 11 .

Inside the lower member 11 are provided a suction chamber 12 having an opening 12 a opening downward, and a connection passage 17 for communicating the suction chamber 12 with a connection pipe 18 . In the suction chamber 12, the rotating brush 15 for sweeping up the dust of the surface to be cleaned is arrange|positioned so that it may oppose the opening part 12a. In addition, a dust collection passage 19 communicating with the suction chamber 12 via the connection passage 17 is provided inside the connection pipe 18 .

As shown in FIG. 3 , chambers divided left and right by connecting passage 17 are formed on lower member 11 , and one chamber is used as motor chamber 20 and the other chamber is used as circuit chamber 25 . In addition, as shown in FIG. 4 , near the four corners of the bottom surface of the lower member 11 , for the purpose of preventing the lower member 11 from directly contacting the surface to be cleaned and not scratching the surface to be cleaned, traveling rollers 28 are provided.

As shown in FIG. 3 , a motor 13 for rotating the rotating brush 15 is housed in the motor chamber 20 . The motor 13 is supported on the lower member 11 in vibration-isolation via vibration-isolation rubber 21 . A motor shaft 22 is provided at the center of the motor 13 , and a first pulley 23 having a tooth shape and a flange portion in one direction is provided at an end of the motor shaft 22 . In addition, a bearing portion 24 for holding the motor shaft 22 on the lower member 11 is provided between the motor 13 and the first pulley 23 .

The control circuit 14 for controlling the motor 13 is provided in the circuit room 25 . The control circuit 14 is held on the lower member 11 . The motor 13 and the control circuit 14 are connected via a connection wire 26 arranged on a bridge body 27 provided on the upper portion of the connection path 17 .

The rotary brush 15 has a base material 31 , a plurality of grooves 32 , a fur brush 33 , and a weekly brush (Japanese: 周ブラシ) 34 . The base material 31 is a rigid body molded from aluminum, foamable resin, or the like. The plurality of grooves 32 are formed in a spiral shape in the longitudinal direction of the base material 31 and open toward the outer periphery of the base material 31 . The brush 33 has a function of wiping surfaces to be cleaned such as wooden floors. The peripheral brush 34 has a function of removing dust from a surface to be cleaned such as a carpet. The fur brushes 33 and the peripheral brushes 34 are inserted alternately and fixed on the base material 31 .

As shown in FIG. 3 , a second pulley 29 having the same tooth profile as that of the first pulley 23 and having a different number of teeth is provided at an end portion of the rotating brush 15 on the motor 13 side. A flange portion is provided in the same manner as the first pulley 23 at a position opposite to the position where the flange portion of the first pulley 23 is provided on the second pulley 29 . The 1st pulley 23 and the 2nd pulley 29 are connected by the timing belt 30, and are comprised so that the power of the motor 13 may be transmitted to the rotating brush 15. As shown in FIG.

As shown in FIG. 2 , on the upper member 10 , an air inlet portion 35 is opened at the front of the suction tool 1 so as to communicate with the connecting passage 17 , so as to communicate the inside of the upper member 10 with the external environment. In addition, a cover body 36 for opening and closing the air inlet portion 35 is provided on the air inlet portion 35 . Accordingly, when the operation of the vacuum cleaner 100 is stopped, dust is not released from the suction port portion 35 to the outside environment, and the suction tool 1 for the vacuum cleaner 100 can be clean.

As shown in FIGS. 2 and 3 , a plurality of holes are provided on the upper surface of the rotating brush 15 on the top surface of the suction chamber 12 of the lower member 11 as the sound-absorbing holes 37 . In addition, an exhaust port portion 38 that communicates the inside of the upper member 10 with the suction chamber 12 is provided. The exhaust port 38 is also provided so as to communicate with the connection passage 17 similarly to the intake port 35 . In addition, the intake port portion 35 and the exhaust port portion 38 communicate with each other via a communication path 39 . It is preferable to provide a plurality of exhaust port portions 38 . With this structure, the main body of the suction piece 1 has a sound absorption effect, and compared with the structure in which a large exhaust port portion 38 is provided, the strength of the main body of the suction piece 1 can be improved.

In addition, it is preferable that the air inlet part 35 and the air outlet part 38 are provided so that the communication path 39 may be substantially parallel to the surface to be cleaned. With this structure, the vector direction of the flow of the outside air sucked in from the suction port 35 and passing through the communication passage 39 can be aligned with the vector direction of the flow of the wind flowing in the suction chamber 12, and the air flow in the suction chamber 12 can be sufficiently suppressed. The fact that turbulent flow is generated inside can further improve the quietness of the main body of the suction piece 1 .

On the lower side of the communication path 39 , a space portion 40 serving as a sound absorption chamber is provided above the suction chamber 12 , and a plurality of noise reduction holes 37 connecting the space portion 40 and the suction chamber 12 are provided. In addition, a sound absorbing member 41 having a sound absorbing effect is provided in the space portion 40 so as to close the sound absorbing hole 37 .

Thus, the sound absorbing member can absorb the wind noise generated when the outside air sucked in from the suction port 35 passes through the communication passage 39 and the noise generated in the suction chamber, and the quietness of the suction tool body can be further enhanced. In addition, by providing a sound absorption chamber (space portion 40 ) independently of the communication passage 39 in the vicinity of the communication passage 39 , the sound absorption chamber can reduce the wind generated when the outside air sucked in from the suction port 35 passes through the communication passage 39 . Noise can improve the quietness of the main body of the suction piece 1 .

The operation and function of the suction tool for electric vacuum cleaner 100 configured as above will be described below.

First, when the user starts the operation of the vacuum cleaner main body 2 in order to clean the surface to be cleaned, suction air is generated by the electric blower. When the suction wind is generated by the electric blower, outside air flows in from the opening 12 a of the suction chamber 12 and the suction port 35 via the hose 8 , the extension pipe 9 , the dust collection passage 19 and the connection passage 17 . In addition, the electric power supplied from the cleaner main body 2 is supplied to the control circuit 14 and the motor 13 via the extension pipe 9 . Accordingly, the motor 13 rotates, and drives the rotating brush 15 via the timing belt 30 .

As the rotating brush 15 in the suction chamber 12 rotates, the dust on the surface to be cleaned is separated from the ground under the action of the brushes 33 and the surrounding brushes 34 . The dust is collected by the suction wind flowing into the suction chamber 12 , and is collected in the dust collecting part 4 of the cleaner main body 2 through the connection passage 17 , the dust collection passage 19 , the extension pipe 9 and the hose 8 . In addition, the suction air reaching the connecting passage 17 from the opening 12 a of the suction chamber 12 mainly constitutes this flow path passing through the lower side of the suction chamber 12 . In addition, the sound pressure of the rotational sound generated by the fur brush 33 and the peripheral brush 34 is reduced by the sound absorbing member 41 through the sound-absorbing hole 37 , thereby enabling noise reduction. That is, the sound absorption chamber (space portion 40 ) absorbs the rotational sound of the rotating brush.

Next, the intake air flowing in from the intake port 35 first opens the cover 36 , passes through the communication passage 39 , reaches the exhaust port 38 , and becomes wind flowing above the intake chamber 12 . The suction air flowing in from the suction port 35 passes through few steps and obstacles before flowing into the connecting passage 17 , and there are no extra steps and the like after reaching the connecting passage 17 . Thus, when the suction wind flowing in from the suction port 35 merges with the suction wind sucked in from the lower surface of the suction chamber 12, the generation of turbulent flow in the suction chamber 12 can be sufficiently suppressed, and the connecting pipe 18 flows smoothly. Therefore, wind noise inside the suction tool 1 can be reduced.

In addition, since there is no obstacle such as a sound-absorbing member in the passage of the external air sucked in from the suction port 35 until it reaches the suction chamber 12, that is, in the communication passage 39, it is possible to sufficiently suppress the flow from the suction port 35. The inhaled outside air is dispersed due to obstacles such as sound absorbing members, and turbulent flow is generated in the outside air passing through the communication passage 39 .

And since the suction wind sucked from the suction tool 1 is sucked separately from the suction port 35 and the opening 12a of the suction chamber 12, the amount of the suction wind inside the suction chamber 12 can be reduced and the flow velocity can be reduced. Therefore, the sound pressure of the wind noise generated by the suction tool 1 can be reduced.

Thus, the air sucked in from the main body of the suction piece 1 by the user starting the operation of the electric vacuum cleaner 100 is dispersed and flows into the suction chamber 12 from the suction port 35 and the opening 12a, so that the air caused by the suction from the suction piece 1 can be reduced. The wind noise generated by the air inhaled by the main body of the suction piece 1 can improve the quietness of the main body of the suction piece 1 .

Moreover, since the occurrence of turbulent flow in the external air passing through the communication passage 39 can be sufficiently suppressed, it is possible to sufficiently suppress the separation between the external air passing through the communication passage 39 and the air inhaled from the opening 12a in the suction chamber 12. At the time of the collision, turbulent flow occurs in the suction chamber 12 . Therefore, noise such as wind noise generated in the suction chamber 12 can be reduced, and the quietness of the main body of the suction tool 1 can be improved.

As described above, in the present embodiment, a space 40 serving as a sound absorption chamber surrounded by the lower member 11 and the upper member 10 is provided independently of the communication passage 39 at the upper portion of the suction chamber 12 . In addition, a sound absorbing member 41 is disposed in the space portion 40 . Thereby, the sound pressure of the noise level generated by the suction tool 1 can be reduced, and noise reduction can be achieved.

Therefore, by using suction tool 1 in this embodiment, it is possible to provide electric vacuum cleaner 100 which can reduce noise during cleaning work and has high quietness.

Industrial availability

As mentioned above, according to the present invention, since it is possible to provide a suction piece for an electric vacuum cleaner characterized by quietness and an electric vacuum cleaner having the suction piece for an electric vacuum cleaner, as a household use suction piece for a vacuum cleaner, Electric vacuum cleaners, industrial electric vacuum cleaners, and the like are useful.

Explanation of reference signs

1 Suction part; 2 Vacuum cleaner main body; 3 Electric blower chamber; 4 Dust collection part; 5 Dust collection port; 6 Hose part; 7 Hose handle part; 7a Holding part; ;11 lower component; 12 suction chamber; 12a opening; 13 motor; 14 control circuit; 15 rotating brush; 16 bumper; 17 connecting channel; 18 connecting pipe; 19 dust collecting channel; 20 motor room; ;22 motor shaft; 23 first pulley; 24 bearing part; 25 circuit room; 26 connecting wire; 27 bridge body; 28 roller; 29 second pulley; 30 synchronous belt; Hair brush; 34 week brush; 35 suction port; 36 cover; 37 silencer hole; 38 exhaust port; 39 communication passage; 40 space (sound-absorbing room);

Claims (8)

1. A suction part for an electric vacuum cleaner, wherein the suction part for an electric vacuum cleaner has: a suction member main body having an opening on a lower surface and a suction chamber inside communicating with the opening; and a connecting pipe, which is installed on the main body of the above-mentioned suction piece and communicates with the above-mentioned suction chamber; An air inlet for inhaling external air is provided on the outer surface of the above-mentioned suction tool main body, An exhaust port for communicating the suction port with the suction chamber is provided inside the suction tool main body, A sound absorption chamber is provided independently of the communication passage in the vicinity of a communication passage connecting the suction port and the discharge port of the suction tool main body. 2. The suction tool for an electric vacuum cleaner according to claim 1, wherein: The vacuum cleaner suction tool further includes a rotating brush arranged in the suction chamber, The sound absorption chamber absorbs the rotation sound of the rotating brush. 3. The suction tool for an electric vacuum cleaner according to claim 1, wherein: A cover for opening and closing the air intake port is provided at the air intake port. 4. The suction tool for an electric vacuum cleaner according to claim 1, wherein: The air intake port and the air discharge port face each other. 5. The suction tool for an electric vacuum cleaner according to claim 1, wherein: The said air inlet part and the said exhaust port part are provided so that the said communication path may be parallel to the surface to be cleaned. 6. The suction tool for an electric vacuum cleaner according to claim 1, wherein: The vacuum cleaner suction tool is provided with a plurality of the above-mentioned exhaust port portions. 7. The suction tool for an electric vacuum cleaner according to claim 1, wherein: A sound-absorbing member is provided in the above-mentioned sound-absorbing chamber. 8. An electric vacuum cleaner, wherein the electric vacuum cleaner has: A vacuum cleaner body incorporating an electric blower for generating suction wind, and a dust collection unit disposed upstream of the electric blower and collecting dust; and The suction tool for an electric vacuum cleaner according to any one of claims 1 to 7.

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