JP2004267683A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner wherein dust collecting performance is improved by improving airtightness without degrading the operability of connection between a vacuum cleaner main body and a connection part. <P>SOLUTION: The vacuum cleaner is provided with: a vacuum cleaner body 1 comprising an electric blower 2 for generating suction air, a dust collecting part 3 for collecting dust on the air suction upstream side of the blower, and a nearly cylindrical communication path 7 communicating with the dust collecting part 3; and a connection pipe 11 to be inserted to the communication path 7. A projection part 12 is formed on the outer surface of the connection pipe 11 or the inner surface of the communication path 7. When the connection pipe 11 is inserted into the communication path 7, the external shape of the connection pipe 11 is deformed. Then, the connection pipe 11 is compressed and deformed by the projection part 12 when being inserted into the connection path 7. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a general household vacuum cleaner.
[0002]
[Prior art]
A conventional vacuum cleaner will be described with reference to FIGS. In FIG. 7, reference numeral 1 denotes a cleaner main body having a built-in electric blower 2 for generating a suction wind, which has a dust collection chamber 4 in which a paper bag 3 as a dust collection unit for collecting sucked dust is mounted in front. A lid 5 is provided above the dust collection chamber 4 to open and close the dust collection chamber 4 freely. Reference numeral 7 denotes a hose mounting portion engaged with the front of the cleaner body 1. Reference numeral 9 denotes a main body suction port provided in the cleaner main body 1, and the main body suction port 9 has an air inlet packing 10 in order to keep the hose connection pipe 11 and the dust collection chamber 4 airtight (for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 05-042091
[Problems to be solved by the invention]
However, in the above-described conventional configuration, as shown in FIG. 8, the hose connection pipe 11 itself is deformed due to variations or the like at the time of injection molding, so that the hose connection pipe 11 has an elliptical shape 13 instead of a perfect circle. In the short diameter portion of the hose connection pipe 11 having the shape 13, there is a problem that the airtightness becomes insufficient due to the formation of the gap 14 between the intake port packing 10 and the air, the air flows in, the suction force is lost, and the dust collection performance is reduced. there were.
[0005]
However, since the hose connection pipe must be able to be easily inserted and removed, there is a limit to reducing the inner diameter of the intake port packing 10 in order to improve the adhesion with the hose connection pipe. The airtightness in the case could not be sufficient.
[0006]
The present invention solves the above-described problems, and improves the dust collection performance by improving the air tightness without reducing the operability of the connection between the cleaner main body and the connection portion. It is intended to provide.
[0007]
[Means for Solving the Problems]
Means for Solving the Problems In order to achieve the above object, the present invention provides an electric blower that generates a suction wind, a dust collection unit that collects dust on an intake upstream side of the electric blower, and a substantially cylindrical communication passage that communicates with the dust collection unit. A suction device that sucks dust on the surface to be cleaned, and a connection portion that connects the suction device and the dust collection portion, and is inserted into the communication passage at one end of the connection portion. The connecting pipe is provided, and a convex portion is provided on an outer surface of the connecting pipe or an inner surface of the communication path, and the outer shape of the connecting pipe is deformed when the connecting pipe is inserted into the communication path. The connecting pipe, which is deformed due to variation during injection molding and has an elliptical shape instead of a perfect circle, is provided with a convex portion on the outer surface of the connecting pipe or the inner surface of the communication passage, and When the pipe is inserted into the communication passage, the connection pipe is compressed by the projection. By form, by correcting the true circle, eliminate the gap between the inlet gasket and said connecting pipe hose, to improve the air tightness can be improved dust collecting performance by eliminating air leakage.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention is directed to an electric blower that generates a suction wind, a dust collecting portion that collects dust upstream of an intake of the electric blower, and a substantially cylindrical communication passage that communicates with the dust collecting portion. A suction device that sucks dust on the surface to be cleaned, and a connection portion that connects the suction device and the dust collection portion, and is inserted into the communication passage at one end of the connection portion. The connecting pipe is provided, and a convex portion is provided on an outer surface of the connecting pipe or an inner surface of the communication path, and the outer shape of the connecting pipe is deformed when the connecting pipe is inserted into the communication path. The connecting pipe, which is deformed due to variation during injection molding and has an elliptical shape instead of a perfect circle, is provided with a convex portion on the outer surface of the connecting pipe or the inner surface of the communication passage, and When the pipe is inserted into the communication path, the connection pipe is compressed and deformed by the projection. So it, by correcting the true circle, eliminate the gap between the inlet gasket and said connecting pipe hose, to improve the air tightness can be improved dust collecting performance by eliminating air leakage.
[0009]
The invention according to claim 2 of the present invention provides an intake port packing for maintaining the airtightness between the connection pipe and the dust collection section between the communication path and the dust collection section, and connects the connection pipe to the communication path. An intake gasket for maintaining the airtightness between the connection pipe and the dust collecting part between a dust collecting part and a communication passage configured to seal the outer periphery of the connecting pipe with the air inlet gasket when inserted; Is provided so that when the connection pipe is inserted into the communication passage, the outer periphery of the connection pipe is sealed by the intake port packing, and is deformed due to variation or the like at the time of injection molding to form a perfect circle. The connecting pipe having an elliptical shape is provided with a convex portion on the outer surface of the connecting pipe or the inner surface of the communication path, and the connecting pipe is compressed and deformed by the convex portion when the connecting pipe is inserted into the communication path. And the connection pipe hose Eliminate the gap between the intake port packing, to improve air tightness, thereby improving the dust collection performance by eliminating air leakage.
[0010]
The invention according to claim 3 of the present invention is characterized in that a plurality of projections are provided in a semicircle on the outer surface of the connection pipe or the inner surface of the communication passage, and the connection pipe having an elliptical shape is provided with a plurality of projections. The part can be more reliably corrected to a perfect circle, eliminates the gap between the connecting pipe and the inlet gasket, improves air tightness, eliminates air leaks, and prevents the dust collection performance of the vacuum cleaner from lowering .
[0011]
The invention according to claim 4 of the present invention is characterized in that the convex portion is formed so as to be inclined so that the protruding margin increases in the direction of insertion of the connecting pipe of the communication path, and the convex section is formed in a perfect circle while inserting the connecting pipe. The resistance at the time of compression straightening can be reduced and operability can be improved.
[0012]
In the invention according to claim 5 of the present invention, the convex portion is provided only in the vicinity of the intake port packing of the communication passage, and the resistance at the beginning of insertion of the connection pipe is eliminated, and only when the connection pipe is inserted to the back side is true. The operability can be further improved by applying a resistance to the circle for compressive correction.
[0013]
【Example】
An embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.
[0014]
1 to 4, reference numeral 1 denotes a cleaner main body having a built-in electric blower 2 for generating a suction wind, and has a dust collection chamber 4 in which a paper bag 3 as a dust collection unit for collecting sucked dust is mounted in front. A cover 5 is provided above the dust collecting chamber 4 so as to open and close the dust collecting chamber 4 freely. Reference numeral 7 denotes a hose mounting portion which is a substantially cylindrical communication passage communicating with the paper bag 3, and is a connecting portion for connecting a suction device (not shown) for sucking dust on the surface to be cleaned with the paper bag 3. Reference numeral 18 denotes a portion into which the hose connection pipe 11 which is a substantially cylindrical connection pipe at one end is inserted. Reference numeral 9 denotes a main body suction port provided in the cleaner main body 1. The main body suction port 9 has a substantially circular opening in order to keep the hose connection pipe 11 and the dust collection chamber 4 airtight. Is provided.
[0015]
A convex portion A12 is provided on a part of the inner peripheral surface of the hose mounting portion 7 in the attaching / detaching direction of the hose connection pipe 11, and a straight line minimum distance passing through the center of the convex portion A12 on the inner peripheral surface of the hose mounting portion 7 is equal to the hose. It is set to be smaller than the diameter of the connection pipe 11 and larger than the inner diameter (diameter) of the opening of the intake port packing 10.
[0016]
The operation of the above configuration is as follows.
[0017]
As shown in FIGS. 1 and 3, the protrusion A12 provided on the inner surface of the hose mounting portion 7 is provided at one place on the inner surface of the hose mounting portion 7 in the attaching / detaching direction of the hose connection pipe 11. The hose connection pipe 11 having an elliptical shape 13 is compressed and deformed into a perfect circle by an opposing portion of the inner peripheral surface of the hose attachment portion 7 with the convex portion A12, and the opening of the intake gasket 10 is opened. By deforming so as to increase the inner diameter of the portion, it is possible to improve the air tightness by eliminating the gap between the hose connection pipe 11 and the intake gasket 10, and to improve the reduction of dust collection performance by eliminating air leakage. Things. It is needless to say that the same operation as described above can be obtained even if the protrusion A12 is provided on the outer surface of the hose connection pipe 11.
[0018]
Also, as shown in FIG. 4, by providing a plurality of three convex portions B15 in the range of the lower half circumference of the hose mounting portion 7, the hose connection pipe 11 having an elliptical shape 13 can be formed at three positions. The convex portion B15 can more reliably correct the shape of the hose connection pipe 11 into a perfect circle, and the outer periphery of the hose connection pipe 11 that has been corrected to the perfect shape is almost uniformly sealed at the opening of the substantially circular intake gasket 10. Therefore, the outer circumference of the hose connection pipe 11 almost eliminates the gap 14 between the opening of the substantially circular intake port packing 10 to improve the air tightness, and eliminate the air leakage to improve the dust collection performance. . It is needless to say that the same operation as described above can be obtained even if three convex portions B15 are provided in the upper half circumference of the hose mounting portion 7.
[0019]
Further, as shown in FIG. 5, the convex portion C <b> 16 is inclined so as to be higher from the inlet toward the back in the insertion direction of the hose mounting portion 7 into which the hose connecting pipe 11 is inserted, so that the hose connection can be made. It is possible to reduce resistance when the pipe 11 is compressed and corrected to a perfect circle while inserting the pipe 11, thereby improving operability.
[0020]
Further, as shown in FIG. 6, the protrusion D17 is provided only on the back side of the hose mounting portion 7 near the intake port packing 10, so that the resistance at the start of insertion of the hose connection pipe 11 is eliminated, and the back side is removed. The operability can be further improved by applying a resistance to correct the compression into a perfect circle only at the time of insertion.
[0021]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which improved the dust collection performance can be provided by improving air tightness, without reducing the operability of the connection of a cleaner main body and a connection part.
[Brief description of the drawings]
FIG. 1 is a central cross-sectional view of a vacuum cleaner main body showing an embodiment of the present invention. FIG. 2 is a central cross-sectional view of the same vacuum cleaner main body (when a connection pipe is connected).
FIG. 3 is a front partial view of the same vacuum cleaner main body. FIG. 4 is a front partial view of the same other vacuum cleaner main body. FIG. FIG. 7 is a central side sectional view of a conventional vacuum cleaner main body. FIG. 8 is a front partial view of the same vacuum cleaner main body.
1 Vacuum cleaner body 2 Electric blower 4 Paper bag (dust collection part)
7 Hose mounting part (communication passage)
10 Inlet packing 11 Hose connection pipe (connection pipe)
12 Convex part A

Claims (5)

A cleaner main body including an electric blower that generates a suction wind, a dust collection unit that collects dust upstream of the intake of the electric blower, and a substantially cylindrical communication passage that communicates with the dust collection unit; A suction device for sucking the dust above, and a connection portion for connecting the suction device and the dust collection portion, and a connection pipe inserted into the communication passage at one end of the connection portion; An electric vacuum cleaner having a convex portion provided on an outer surface or an inner surface of the communication passage so that an outer shape of the connection tube is deformed when the connection tube is inserted into the communication passage. Between the communication passage and the dust collecting portion, an inlet gasket for maintaining airtightness between the connection tube and the dust collecting portion is provided, and when the connection tube is inserted into the communication passage, an outer periphery of the connection tube is removed. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is configured to seal with the intake port packing. The vacuum cleaner according to claim 1 or 2, wherein a plurality of protrusions are provided within a semicircle of an outer surface of the connection pipe or an inner surface of the communication passage. The vacuum cleaner according to any one of claims 1 to 3, wherein the convex portion is formed so as to be inclined so that a protruding margin increases in a direction in which the connection pipe of the communication path is inserted. 3. The vacuum cleaner according to claim 2, wherein the protrusion is provided only near the intake gasket of the communication passage.

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