JP3688085B2 - Vacuum cleaner suction port - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suction port body of a vacuum cleaner that rotates a rotary cleaning body by a rotational force of a turbine.
[0002]
[Prior art]
Conventionally, what is shown in FIG. 12 and FIG. 13 is known as a suction port body of a vacuum cleaner that rotates a rotary cleaning body by the rotational force of a turbine.
[0003]
In FIG. 12 and FIG. 13, 1 is a suction port formed on the bottom surface of the suction port body 2, 3 is a rotating brush that is rotatably provided facing the suction port, and 4 is rotatably provided in the turbine chamber 5. In the turbine, the rotating brush 3 is rotated via the belt B by the rotation of the turbine 4.
[0004]
The air sucked from the suction port 1 flows through the air passage 6 and the tube body 7 to a vacuum cleaner main body (not shown). The outside air is introduced from the suction opening 8 of the turbine chamber 5 by the flow of air in the tube body 7, and the introduced outside air flows to the tube body 7 through the communication hole 9 communicated with the tube body 7. Then, the turbine 4 is rotated by the outside air flowing in the turbine chamber 5.
[0005]
Further, the adjustment of the outside air flowing into the turbine chamber 5 is performed by a valve body 10 provided at the rear end portion of the partition wall 6A that partitions the air passage 6, and the valve body 10 is a knob (not shown) provided in the tube body 7. It is switched by operation.
[0006]
[Problems to be solved by the invention]
By the way, in such a suction port body, even if the suction port main body 2 is turned upside down, since the outside air is introduced from the suction opening 8, the turbine 4 continues to rotate at a high speed. In order to reduce the rotational speed of the turbine 4, the valve body 6B may be switched to the position of the broken line, but the knob must be operated, which is troublesome. Further, since the rotating brush 3 continues to rotate because the turbine 4 continues to rotate, there is a problem that it is difficult to remove the yarn debris when the rotating brush 3 is entangled with yarn debris.
[0007]
The present invention has been made in view of the above problems, and its purpose is to provide a suction port body of a vacuum cleaner in which the rotation of the rotary cleaning body automatically stops when the suction port body is turned over during cleaning. It is to provide.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, the rotary cleaning body that is rotatably provided in the rotary cleaning body chamber having the suction opening formed on the bottom surface of the suction inlet main body, the suction inlet for sucking outside air, and the suction inlet A turbine chamber provided in the port body, a turbine rotatably provided in the turbine chamber and rotated by outside air introduced from the intake port, and for changing the direction of rotation of the turbine and transmitting it to the rotary cleaning body The conversion device includes a conversion device main body and an input shaft that protrudes downward from a lower portion of the conversion device main body. A pulley is attached to the input shaft, and the turbine is attached to the pulley. In the suction port body of a vacuum cleaner that transmits the rotation of
The pulley is provided with a weight member that can protrude upward from the pulley,
In the lower part of the conversion device main body, a locking portion for locking to the weight member is provided,
When the suction port body is turned over, the weight member protrudes from the pulley and engages with the locking portion to stop the rotation of the input shaft.
[0009]
The invention according to claim 2 is characterized in that at least one of the weight member and the locking portion is covered with an elastic member.
[0010]
Embodiment
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a suction port body of a vacuum cleaner according to the present invention will be described with reference to the drawings.
[0011]
1 to 3, reference numeral 10 denotes a suction port body of a vacuum cleaner. The suction port body 10 includes a suction port body 11, a turbine chamber 30 provided in the suction port body 11, and a turbine chamber 30. A turbine 50 provided rotatably, a rotary cleaning body (agitator) 60, 61 rotated by the rotation of the turbine 50, and a rotational speed of the rotary cleaning body 60 reduced by reducing the rotational speed while changing the rotation direction of the turbine 50. And a conversion device 70 for transmission to 61. The suction port body 11 has an upper case 211 and a lower case 212.
[0012]
In the suction port main body 11, horizontally-long rotary cleaning body chambers 13 and 14 are partitioned and formed on the front side and the rear side, and the rotary cleaning body chambers 13 and 14 are suction openings 16 and 17 provided on the bottom surface 11 </ b> A of the suction port main body 11. Have The rotary cleaning bodies 13 and 14 are rotatably provided with rotary cleaning bodies 60 and 61 facing the suction openings 16 and 17, and the shafts (not shown) of the rotary cleaning bodies 60 and 61 are provided with gears 62, 61. 63 is attached, and the gears 62 and 63 rotate integrally with the rotary cleaning bodies 60 and 61.
[0013]
The gears 62, 63 are connected to the output gears 71, 72 of the conversion device 70 via timing belts 73, 74, and the rotary cleaning body is rotated via the timing belts 73, 74 and gears 62, 63 by the rotation of the output gears 71, 72. 60 and 61 rotate.
[0014]
As shown in FIGS. 4 and 5, the conversion device 70 includes a device main body 75 having a bevel gear 70 </ b> A, 70 </ b> B and the like, and an input shaft 76 that protrudes downward from the lower portion of the device main body 75. The converter 70 converts the rotation of the input shaft 76 around the vertical axis into rotation of the output gears 71 and 72 around the horizontal axis and decelerates.
[0015]
A disk-shaped pulley 78 having gear teeth 78 </ b> A formed on the outer periphery is attached to the input shaft 76. As shown in FIG. 6, four holes 100 extending downward from the upper surface 78J are provided in the pulley 78 at equal intervals around the input shaft 76. A cylindrical weight member 101 is accommodated in the hole 100, and the weight member 101 comes out of the hole 100 when the suction port body 11 is turned over.
[0016]
On the other hand, on the lower surface 75A of the lower portion of the apparatus main body 75 facing the pulley 78, as shown in FIG. 7, four projecting portions (locking portions) 102 projecting downward are centered on the input shaft 76 (see FIG. 5). Are provided at equal intervals. When the distance between the protruding portion 102 and the input shaft 76 and the distance between the hole 100 of the pulley 78 and the input shaft 76 are set to be substantially the same, and the weight member 101 protrudes from the hole 100, the weight member 101. One end portion 101A (upper portion in FIG. 5) engages with the protruding portion 102, and the rotation of the input shaft 76 is stopped.
[0017]
On the other hand, a suction air passage 20 is formed in the suction port body 11 below the turbine chamber 30. The suction air passage 20 and the rotary cleaning body chamber 13 are partitioned by a partition wall 21, and the rotary cleaning body chamber 14 and the suction air passage 20 are partitioned by a partition wall 22 that partitions the rotary cleaning body chamber 14. The partition walls 21 and 22 are formed with suction ports 21A and 22A that connect the suction air passage 20 and the rotary cleaning chambers 13 and 14, respectively.
[0018]
In addition, a plurality of slit holes 110 </ b> A that connect the turbine chamber 30 and the suction air passage 20 are formed in the partition wall 110 that partitions the turbine chamber 30 and the suction air passage 20. The partition wall 110 is provided in the lower case 212.
[0019]
The suction air passage 20 communicates with a rotary tube 24 attached to the rear portion of the suction port main body 11, and the rotary cleaning chamber 13 communicates with the rotary tube 24 via the suction port 21A and the suction air passage 20 for rotational cleaning. The body chamber 14 communicates with the rotary tube 24 via the suction port 22 </ b> A and the suction air passage 20. The rotary tube 24 is rotatable in the direction of the arrow P 1 with respect to the suction port body 11, and a connection tube 26 is attached to the rotary tube 24. The connecting pipe 26 is connected to an unillustrated extension pipe or the like and communicated with the dust collecting chamber of the main body of the vacuum cleaner through a hose.
[0020]
The turbine chamber 30 is defined by a partition wall 110 and an upper case 211 provided in the lower case 212. A guide air passage 40 that guides outside air to the turbine chamber 30 is formed between the partition wall 110 and the upper case 211. The guide air passage 40 communicates with the outside air through a plurality of small holes (intake ports) 44 provided in the upper case 11B.
[0021]
The turbine 50 includes a rotary shaft 51 extending in the vertical direction, a dome-shaped rotary plate 52, and a plurality of blades 53 provided on the lower surface of the rotary plate 52. A lower end portion 57 of the rotating shaft 51 projects downward through the partition wall, and a gear 58 is attached to the lower end portion. The gear 58 is connected to a pulley 78 attached to the input shaft 76 of the conversion device 70 via a timing belt T as a transmission means. When the turbine 50 rotates, the input of the conversion device 70 is transmitted via the gear 58 and the timing belt T. The shaft 76 is rotated.
[0022]
Next, the operation of the suction port will be described.
[0023]
First, the vacuum cleaner body (not shown) is operated, and the suction port body 10 is moved on the surface to be cleaned H to clean the surface to be cleaned H. At this time, the openings 16 and 17 of the bottom surface 11 </ b> A of the suction inlet body 11 are closed by the surface to be cleaned H.
[0024]
Due to the operation of the main body of the vacuum cleaner, the dust collecting chamber becomes negative pressure, and the suction air passage 20 becomes negative pressure through the hose, the extension pipe, and the connecting pipe. By this negative pressure, air is sucked from the openings 16 and 17 of the rotary cleaning body chambers 13 and 14, and the air flows in the direction of the arrow (see FIG. 2). As a result, dust or the like on the surface to be cleaned H is sucked into the rotary tube 24.
[0025]
Further, since the suction air passage 20 communicates with the turbine chamber 30, outside air is sucked into the turbine chamber 30 from the small hole 44 of the upper case 11 </ b> B through the guide air passage 40. Then, the outside air sucked into the turbine chamber 30 is further sucked into the suction air passage 20, whereby the turbine 50 rotates at a high speed.
[0026]
As the turbine 50 rotates, the input shaft 76 of the conversion device 70 rotates via the gear 58 and the timing belt T, whereby the output gears 71 and 72 of the conversion device 70 rotate. As the output gears 71 and 72 rotate, the rotary cleaning bodies 60 and 61 rotate via the timing belts 73 and 74 and the gears 62 and 63 to scrape dust adhering to the carpet and the like. The rotary cleaning body 60 rotates clockwise (in FIG. 3), and the rotary cleaning body 61 rotates counterclockwise.
[0027]
In this state, the weight member 101 of the hole 100 of the pulley 78 is housed as shown in FIG.
[0028]
Then, when the suction port body 10 is turned upside down, the weight member 101 comes out of the hole 100 as shown in FIG. 9, and one end 101A of the weight member 101 abuts against the protruding portion 102 of the lower surface 75A of the apparatus main body 75 ( Engage). By this contact, the rotation of the input shaft 76 is stopped, and the rotation of the turbine 50 and the rotary cleaning bodies 60 and 61 is stopped.
[0029]
As described above, when the suction port body 10 is turned over, the rotation of the turbine 50 and the rotary cleaning bodies 60 and 61 is automatically stopped. This stop is caused by stopping the one end portion 101A of the weight member 101 against the protruding portion 102, so that the turbine 50 and the rotary cleaning bodies 60 and 61 can be stopped reliably.
[0030]
By stopping the rotation of the turbine 50, noise due to the rotation of the turbine 50 is not generated. For this reason, when the suction inlet 10 is turned over, it becomes quiet.
[0031]
In addition, by stopping the rotation of the rotary cleaning bodies 60, 61, it is possible to easily remove yarn scraps and the like entangled with the rotary cleaning bodies 60, 61.
[0032]
FIG. 10 shows another example of the weight member 101. In this example, the weight member 101 is covered with an elastic member 150 such as rubber. In this example, the elastic member 150 absorbs an impact when the one end 101 </ b> A of the weight member 101 comes into contact with the protruding portion 102. That is, the impact at the time of stopping the turbine 50 and the rotary cleaning bodies 60 and 61 is absorbed.
[0033]
Further, in order to absorb this impact, the protruding portion 102 may be covered with an elastic member 151 as shown in FIG. Further, both the weight member 101 and the protruding portion 102 may be covered with the elastic members 150 and 151.
[0034]
【The invention's effect】
As described above, according to the first aspect of the present invention, when the suction port body is turned over, the turbine and the rotary cleaning body can be stopped automatically and reliably, and noise is generated due to the rotation of the turbine. If the suction port is turned upside down, it will be quiet. Further, by stopping the rotation of the rotary cleaning body, it is possible to easily remove yarn scraps and the like entangled in the rotary cleaning body.
[0035]
According to invention of Claim 2, the impact at the time of stopping a turbine and a rotary cleaning body can be absorbed.
[Brief description of the drawings]
FIG. 1 is a plan view of a suction port body of a vacuum cleaner according to the present invention.
FIG. 2 is a cross-sectional view of the suction port body shown in FIG.
FIG. 3 is an explanatory view showing a drive system for rotating a rotary cleaning body.
FIG. 4 is an explanatory view showing a drive system for rotating a rotary cleaning body.
FIG. 5 is a cross-sectional view showing a configuration of a conversion device.
FIG. 6 is a perspective view showing a pulley.
7 is a perspective view showing an external appearance of a main body of the conversion device of FIG. 5. FIG.
FIG. 8 is an explanatory view showing a relationship between a weight member and a protruding portion.
FIG. 9 is an explanatory diagram showing a state in which the rotation of the input shaft is stopped.
FIG. 10 is an explanatory view showing a weight member of another example.
FIG. 11 is an explanatory view showing a protrusion of another example.
FIG. 12 is a cross-sectional view showing a configuration of a conventional suction port body.
13 is a plan view of the suction port body of FIG. 13;
[Explanation of symbols]
70 Conversion device 75 Conversion device main body 76 Input shaft 78 Pulley 101 Weight member 102 Projection (locking portion)

Claims (2)

A rotary cleaning body rotatably provided in a rotary cleaning body chamber having a suction opening formed on a bottom surface of the suction inlet body, a turbine chamber having an intake port for sucking outside air and provided in the suction inlet body; A turbine that is rotatably provided in the turbine chamber and is rotated by outside air introduced from the intake port, and a conversion device that converts the rotation direction of the turbine and transmits the turbine to the rotary cleaning body. The apparatus has a conversion device main body and an input shaft protruding downward from the lower portion of the conversion device main body. A pulley is attached to the input shaft, and the rotation of the turbine is transmitted to the pulley via transmission means. In the suction mouth of the vacuum cleaner
The pulley is provided with a weight member that can protrude upward from the pulley,
In the lower part of the conversion device main body, a locking portion for locking to the weight member is provided,
The suction port body of a vacuum cleaner, wherein when the suction port body is turned upside down, the weight member protrudes from a pulley and engages with the locking portion to stop the rotation of the input shaft. The suction port body of the electric vacuum cleaner according to claim 1, wherein at least one of the weight member and the locking portion is covered with an elastic member.

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