JPH0427493Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner, and particularly to a structure including an opening/closing body for opening and closing the outer opening end of the suction port of the vacuum cleaner body.

(Prior Art) Conventionally, for example, as shown in FIG. 7, a vacuum cleaner main body 1 having a dust collection chamber inside has one end open to the dust collection chamber and the other end facing upward on the outer surface of the vacuum cleaner main body 1. A suction port 2 is provided to which a connection pipe for an accessory such as a hose formed in a cylindrical shape that opens toward the outside can be connected to the suction port 2 in a removable manner. This suction port 2 is designed to prevent dust from entering.
A vacuum cleaner is known which is provided with an opening/closing body 3 that opens and closes the outer opening end of the vacuum cleaner.

And, in this type of conventional vacuum cleaner,
The opening/closing body 3 is, for example, formed into a flexible thin plate shape, is slidably supported along the outer opening end of the suction port 2 as shown by the arrow, and is provided integrally with the opening/closing body 3. A structure was adopted in which opening and closing operations were performed by operating an opening/closing knob 4.

(Problem to be solved by the invention) However, in the above conventional structure, the opening/closing body 3
Since this is done manually, it is necessary to separately set the opening/closing body 3 in the open state before connecting a connecting pipe such as a hose to the suction port 2, and conversely, after cleaning, the suction port 2 It is necessary to remove the connecting pipe from the opening and then set the opening/closing body 3 in the closed state, which poses a problem of poor operability.

The present invention aims to solve these problems, and does not require manual opening and closing operations of the opening/closing body separately from the connecting pipe, and also allows the connecting pipe to be securely connected to and held in the suction port. The present invention provides a vacuum cleaner with

(Means for Solving the Problems) The vacuum cleaner of the present invention is provided with an electric blower and a dust collection chamber communicating with the electric blower inside, and one end is opened to the dust collection chamber, and the other end is opened to the outside. a vacuum cleaner body provided with a cylindrical suction port opened in the vacuum cleaner body; an opening/closing body for opening and closing the outer opening end of the suction port opened on the outer surface of the vacuum cleaner body;
and a connecting pipe that connects a hose and is inserted and connected to the suction port in a freely insertable and removable manner, and the opening/closing body is divided into two or more parts, and each of these opening/closing bodies has a direction of opening/closing operation in the insertion/removal direction of the connecting pipe. each of which is rotatably supported at the outer opening end of the suction port, is always biased by an elastic body in a closing direction to close the outer opening end of the suction port, and a connecting pipe is inserted into the cylindrical suction port. In the connected state, the back surface of the opening/closing body abuts the inner circumferential wall of the cylindrical portion of the suction port, and the outer surface of the opening/closing body abuts the outer circumferential surface of the connecting pipe at two or more points aligned in the insertion/removal direction. It is.

(Function) In the vacuum cleaner of the present invention, when a connecting tube with a hose connected to the cylindrical suction port is inserted from the outside and connected, the opening/closing body is pushed by the connecting tube and rotates in the opening direction. The outer open end of the suction port is opened. and,
In this state, the back surface of the opening/closing body is in contact with the inner circumferential wall surface of the cylindrical part of the suction port, and the outer surface of the opening/closing body is aligned with the outer surface of the connecting pipe in the insertion/removal direction at two or more points. The connection tube is firmly held in the suction port. Further, when the connecting pipe is pulled out and removed from the suction port, the opening and closing body rotates in the closing direction due to the biasing force of the elastic body, and the outer open end of the suction port is closed by the opening and closing body.

(Embodiment) Hereinafter, the configuration of an embodiment of the vacuum cleaner of the present invention will be described based on FIGS. 1 to 4.

11 is a vacuum cleaner main body, and this vacuum cleaner main body 11 is
A main body case 14 consisting of a lower main body case 12 with an open top surface, an upper main case 13 with an open bottom surface coupled to the rear side of the upper surface of the lower main body case 12, and an opening 15 on the front side of the upper surface of the lower main body case 12. It is configured with a lid body 16 that opens and closes. The lid body 16 is rotatably supported by the front part of the upper main body case 13 at its rear part. Moreover, the upper surface peripheral portion of the lower main body case 12, the upper main body case 13, and the lid body 1
A bumper 17 made of an elastic body is clamped between the bottom peripheral edge of the cover 6 and the lid 16, and the lid 16 can be freely moved toward and away from the bumper 17. Note that the lid 16 may be detachably attached to the main body case 14.

Inside the main body case 14, there is a partition wall 2 formed approximately in the center thereof and having a communication port 21.
It is divided into front and rear by 2, and this partition wall 22
An electric blower 23 is installed in the space behind the communication port 21.
A space in front of the partition wall 22 forms the lower half of a dust collection chamber 24 that faces the opening 15 and communicates with the negative pressure side of the electric blower 23. Further, the front end of the lower main body case 13 projects upward from the opening 15,
A frame-shaped mouth frame holder 25 is provided which is inclined downward and forward and has an open upper end, and a retaining groove 26 is formed in the inner peripheral edge of this mouth frame holder 25.

The lid body 16 is made up of a case-like lid body 31 with an open bottom surface, and a front cover body 32 fixed to the front center portion of the lid body 31 formed in a concave shape. The interior of 31 forms the upper half of the dust collection chamber 24. Further, a circular opening 33 is formed in the front surface of the lid main body 31 that is parallel to the mouth frame holder 25 when the lid 16 is closed, and a suction port packing 34 made of an elastic material is formed in the circular opening 33. is provided. This suction port packing 34 has radial slits 3.
A membrane check valve 36 having a diameter of 5 is integrally formed.

On the other hand, the front cover body 32 is formed with a cylindrical suction port 37 that faces the circular opening 33 and whose axial direction is perpendicular to the circular opening 33. A connecting tube 39 provided at the base end is removably inserted and connected. The rear end of the suction port 37, that is, the inner opening end is in close contact with the suction port packing 34, while the front end of the suction port 37, that is, the outer opening end that opens on the outer surface of the lid body 16 is directed downward. It is tilted forward. Further, the suction port 37 has a cylindrical fitting part 41 having an inner diameter that is approximately equal to the outer diameter of the connecting pipe 39 at the rear thereof, and a rectangular tube shaped like a rectangular tube at the front of the fitting part 44. Section 42. The rectangular cylindrical portion 42 is larger in the radial direction than the fitting portion 41 at least on the upper and lower sides, and a space along the inner surface of the rectangular cylindrical portion 42 serves as a relief portion 43.

Further, on the front surface of the front cover body 32, a pair of upper and lower plate-shaped opening/closing bodies 51 for opening and closing the outer opening end of the suction port 37 are provided, each with a left and right direction as a rotation axis. In other words, the shaft portions 52 protruding from the ends of both side edges of the opening/closing body 51 are rotatably connected to the upper end portions of the outer edges of the inner surfaces on both sides of the rectangular cylinder portion 42, and Each is rotatably fitted into a bearing hole (not shown) formed at the lower end. Further, the both opening/closing bodies 51 are, for example, torsions wound around the shaft portion 52 and having one end engaged with the inner surface of the opening/closing body 51 and the other end engaged with the inner surface of the rectangular cylindrical portion 42. The suction port 3 is closed by an elastic body 53 such as a spring.
7 are constantly biased in the closing direction to close the outer open ends of the openings.

Further, a protruding stopper 54 is formed on the upper edge or the lower edge of the opening/closing body 51, and on the other hand, the stopper 54 is formed on the upper edge and the lower edge of the outer opening end of the suction port 37. A step portion 55 is formed in which the opening/closing body 51, which is engaged with the opening/closing body 54 and urged by the elastic body 53, is restricted to the closed position.

Further, on the outer surface of both opening and closing bodies 51, a plurality of contact plates 5 are formed in line in the radial direction of the shaft portion 52.
6 are formed to protrude, and a guide portion 57 is formed that connects the center portions of these contact portions 56, and this guide portion 57 extends up to above the stopper 54. The opening/closing body 51 is adapted to come into contact with the inner circumferential wall of the cylindrical portion 42 of the suction port 37 in the open state.

Further, a main body clamp 59 is pivotally attached to the front side of the front cover body 32, and this main body clamp 59
is removably engaged with an engaging portion 60 formed on the upper front surface of the lower main body case 24, thereby holding the lid body 16 in a closed state.

Reference numeral 61 denotes a dust collection bag that is detachably attached to the inside of the dust collection chamber 24. The opening frame 63 is made of cardboard or the like and is glued to the opening frame 63. Further, a dust collection port 64 facing the suction port 37 is formed in the mouth frame 63, and a seal valve 65 made of a soft elastic material is fixed to the inside of the dust collection port 64. . The mouth frame 63 is removably attached by sliding it into the holding groove 26 of the mouth frame holder 25 from above with the lid 16 open. Further, an auxiliary filter 66 is detachably attached to the dust collection chamber 24 side so as to cover the communication port 21 of the partition wall surface 22.

Next, the operation of the above embodiment will be explained.

When cleaning, as shown in FIG.
9 is inserted and connected, and, although not shown, the suction port body is connected to a grip tube provided at the tip of the hose 38 via an extension tube, for example.
When the connecting pipe 39 is inserted into the suction port 37, the connecting pipe 39 presses the opening/closing body 5.
1 rotates in the opening direction against the biasing force of the elastic body 53, and the outer open end of the suction port 37 is opened. At this time, the tip of the connecting tube 39 slides over the center of the contact portion 56 of each opening/closing body 51, but since there is a guide portion 57 that passes through the center of the plurality of contact portions 56 of each opening/closing body 51. , the tip of the connecting tube 39 will not get caught in the abutting portion 56.

Furthermore, the connecting pipe 39 is connected to the fitting portion 4 of the suction port 37.
1 through the check valve 36 of the suction port packing 34.
is elastically deformed and opened, passes through the dust collection port 64,
The tip portion is inserted into the dust collection bag 61. In this way, when the connection of the connecting pipe 39 is completed, the opening/closing body 51 is located in the relief part 43 of the rectangular cylindrical part 42 of the suction port 37, and the plurality of abutting parts 56 of each opening/closing body 51
The guide portion 57 contacts the outer surface of the connecting tube 39 at a plurality of points arranged in the axial direction, that is, the insertion/removal direction. At this time, the back of the opening/closing body 51 has the suction port 37
is in contact with the inner circumferential wall of the cylindrical portion 42 of
9 is brought into contact with the suction port 37 via the opening/closing body 51;
A connecting pipe 39 is firmly connected to the suction port 37 . In addition, the seal valve 6 of the dust collection bag 61 is attached to the outer surface of the connecting pipe 39.
5 is in close contact.

Then, by driving the electric blower 23, the dust sucked in from the suction port body is guided into the dust collection bag 61 via the extension pipe and the hose.
stored within.

By the way, the connecting pipe 39 of the hose 38 has a fitting part 41 into which the connecting pipe 39 is fitted, a suction port packing 34, and a plurality of abutting parts of each opening/closing body 51 that is in contact with the outer surface of the connecting pipe 39. 56 and a guide portion 57, it is held in a state connected to the suction port 37. As described above, since the plurality of abutting parts 56 and guide parts 57 are aligned and abutted in the axial direction of the connecting tube 39, the connecting tube 39 is held over a relatively long range in the axial direction. Moreover, since the back surface of the opening/closing body 51 is in contact with the inner circumferential wall of the cylindrical portion 42 of the suction port 37, the connecting pipe 39 is reliably and firmly held in the suction port 37.
The looseness of the connecting pipe 39 is reduced, the strength of the hose 38 in the direction of prying is improved, and reliability is increased.

After cleaning, by removing the connecting pipe 39 of the hose 38 from the suction port 37, the opening/closing body 51 rotates in the closing direction due to the urging force of the elastic body 53, as shown in FIG. Close the outer open end of the Further, the check valve 36 closes due to its own elasticity.

In this way, when the connecting pipe 39 is removed, the outer opening end of the suction port 37 is closed, so even though the suction port 37 opens upward on the outer surface of the cleaner body 11, this suction Dust does not enter the opening 37 from the outside and accumulate there. Also,
The inner part of the suction port 37 that is dirty with fine dust cannot be seen, which is desirable in terms of design and is hygienic.

As described above, the opening/closing body 51 automatically opens and closes as the connecting tube 39 is inserted and removed.
There is no need to operate the opening/closing body 51 separately from the connecting pipe 39, making it easy to use.

In addition, in the above embodiment, a structure was described in which a guide portion 57 was provided to connect the central portions of the plurality of abutting portions 56 of each opening/closing body 51, but as shown in FIG.
By curving or sloping the upper surface of each abutting part 56 of each opening/closing body 51, it is also possible to prevent the tip of the connecting pipe 39 from getting caught in the abutting part 56.

Further, in both of the above embodiments, a plurality of contact portions 56 are arranged in the axial direction and abutted on the outer surface of the connecting pipe 39.
The structure in which the opening/closing bodies 51 are formed protrudingly on each opening/closing body 51 has been described, but as shown in FIG.
The structure may be such that it contacts the outer circumferential surface of the cylinder in a line-contact manner in the axial direction.

(Effect of the invention) According to the invention, the opening/closing body that opens and closes the outer opening end of the suction port to which the connecting pipe is connected is divided into two or more parts, and these opening/closing bodies are operated in the opening/closing operation direction in the insertion/removal direction of the connecting pipe. By supporting it rotatably and biasing it in the closing direction, the opening/closing body automatically opens and closes as the connecting pipe is inserted and removed, eliminating the need to operate the opening/closing body separately from the connecting pipe. It is easy to use, and the outer surface of a plurality of opening/closing bodies comes into contact with the outer peripheral surface of the connecting pipe connected to the suction port at two or more points lined up in the insertion/removal direction, and the back surface of the opening/closing body contacts the suction port. By coming into contact with the inner circumferential wall of the cylindrical portion, the connecting pipe is firmly connected to the suction port, the connecting pipe is reliably held at the suction port, the strength of the connecting pipe in the direction of prying is increased, and reliability is improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the vacuum cleaner of the present invention, Fig. 2 is a perspective view of the front part of the same, Fig. 3 is an enlarged sectional view of the vicinity of the above opening/closing body, and Fig. 4 is the same opening/closing body. , FIG. 5 is a perspective view of an opening/closing body showing another embodiment of the present invention, FIG. 6 is a sectional view showing still another embodiment of the vacuum cleaner of the present invention, and FIG. 7 is a conventional vacuum cleaner. FIG. 2 is a front perspective view showing an example of a vacuum cleaner. 11...Vacuum cleaner body, 23...Electric blower, 2
4... Dust collection chamber, 37... Suction port, 38... Hose, 39... Connecting pipe, 42... Cylindrical portion, 51... Opening/closing body, 53... Elastic body.

Claims (1)

[Scope of Claim for Utility Model Registration] An electric blower and a cylindrical suction with an internal dust collection chamber communicating with the electric blower, one end opened to the dust collection chamber, and the other end opened to the outside. A vacuum cleaner body having a mouth, an opening/closing body for opening and closing the outer opening end of the suction mouth opened on the outer surface of the vacuum cleaner body, and a connecting pipe to which a hose is connected and is removably inserted into the suction mouth. The opening/closing body is divided into two or more pieces, and each opening/closing body is rotatably supported at the outer opening end of the suction port in the opening/closing operation direction in the insertion/removal direction of the connecting pipe, The elastic body constantly biases the outer opening end of the suction port in the closing direction, and when the connecting pipe is inserted into and connected to the cylindrical suction port, the back surface of the opening/closing body is inside the cylindrical portion of the suction port. A vacuum cleaner characterized in that the opening/closing body contacts the peripheral wall and the outer surface of the opening/closing body contacts the outer peripheral surface of the connecting pipe at two or more points aligned in the insertion/removal direction.