JPS6332445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum cleaner, and particularly to a vacuum cleaner having an airtight gasket between an upper case and a lower case.

[Conventional technology]

As shown in FIGS. 7 and 8, a conventional vacuum cleaner is constructed by combining an upper case 102 made of synthetic resin and a lower case 103 made of synthetic resin.
~A main body case is formed by screwing five parts together, and an airtight packing consisting of a relatively long outer peripheral part 107 that covers the upper end of the lower case 103, an inner peripheral part, and a connecting part 106 that connects therebetween. 105 is mounted, and the lower surface of the lower end of the upper case 102 is brought into contact with the upper surface of the connecting portion 106 of the airtight packing 105.

[Problem that the invention seeks to solve]

However, in such a conventional vacuum cleaner, since the upper case 102 is made of synthetic resin, the flatness of the lower end is quite inaccurate, and the flatness of the screwed part is as shown in FIG. Upper case 1
The lower surface of the lower end of 02 bites into the upper surface of the connection part 106 of the airtight packing 105 to ensure a predetermined interval δ ₁ and maintain airtightness, but in the middle of the screwed part, as shown in FIG. 8, the upper case The lower surface of the lower end of the airtight packing 105 floats above the upper surface of the connecting portion 106, resulting in a large gap δ ₂ and a gap δ ₀
occurred, and the airtightness between the upper case 102 and the lower case 103 could not be maintained. As a result, the performance of the vacuum cleaner was significantly reduced.

Also, when the screws are strongly tightened, the lower end of the upper case 102' expands in the outer circumferential direction as shown by the dotted line in FIG.
There was a problem in that the outer peripheral portion 107 protruded outward from the outer surface of the outer circumferential portion 107, thereby obstructing the bumper function of the outer peripheral portion 107.

Furthermore, since the lower end of the upper case 102 is designed to bite directly into the upper surface of the connection part 106 of the airtight packing 105, the connection part 106 must be made quite thick, which makes it difficult to lower the airtight packing 105. When installing the case 103, the outer peripheral part 1
It was no longer easy to widen the 07 and the inner peripheral portion, and the installation work was troublesome.

[Means for solving problems]

The present invention has been made based on this point, and a main body case 1 is formed by combining an upper case 2 and a lower case 3 made of synthetic resin. In a vacuum cleaner equipped with an airtight packing 5 consisting of an outer peripheral part 51, an inner peripheral part 52, and a connecting part 53 connecting therebetween, the lower end of the upper case 2 is brought into contact with the airtight packing 5, The outer peripheral part 51 and the inner peripheral part 52 of the airtight packing 5 are made thick, and the connecting part 5
3 is made thin, and the outer peripheral part 51 of the airtight packing 5 is
A thin rising part 56 is formed from the outer circumferential side of the intersection of the connecting part 53 and the upper end of the rising part 56. A protrusion 55 is formed that protrudes upward from the upper case 2, and the lower surface of the lower end of the upper case 2 is pressed against the upper surface of the lip 54, so that the inner circumferential portion of the protrusion 55 comes into contact with the outer circumferential surface of the lower end of the upper case 2. This is a vacuum cleaner characterized by the fact that it touches the ground.

[Effect]

According to this vacuum cleaner, a thin rising part 56 is formed from the outer periphery of the intersection of the outer periphery 51 of the airtight packing 5 and the connecting part 53, and the thin rising part 56 is inclined inwardly and upwardly from the upper end of the rising part 56. Protruding lip 5
4, and an upper case 2 is formed on the upper surface of this lip 54.
Since the lower surface of the lower end of the upper case 2 is pressed, even if the lip 54 is easily greatly deformed and the lower end of the synthetic resin upper case 2 has poor flatness,
It reliably follows the entire circumference and maintains the contact state at a predetermined interval (δ), and the lower surface of the lower end of the upper case 2 is always pressed against the reaction force P of the lip 54.
Airtightness is maintained. Further, since the protrusion 55 is formed upward from the outer periphery of the upper surface of the lip 54, when the lower surface of the lower end of the upper case 2 is pressed against the upper surface of the lip 54 and the lip 54 is deformed downward, the protrusion 55
is pulled by the force of W, and the outer circumferential surface of the lower end of the upper case 2 is pressed by the force of W, and airtightness is also maintained by the protrusion 55, achieving double airtightness, and the upper Even if the lower end of the upper case 2 tries to expand in the outer circumferential direction by tightly tightening the case 2 and the lower case 3 with screws, this is prevented by the force W that pulls the protrusion 55 inward. Furthermore, airtight packing 5
Since the outer peripheral part 51 and the inner peripheral part 52 are made thick and the connecting part 53 is made thin, a sufficient gap can be secured between the lip 54 and the connecting part 53, and the airtight packing 5 can be attached to the lower case 3. When doing so, the outer periphery 5
1 and the inner circumferential portion 52 can be easily expanded, and the installation work can be facilitated.

〔Example〕

The present invention will be described below based on an embodiment shown in FIGS. 1 to 6.

Synthetic resin upper case 2 and synthetic resin lower case 3
are combined to form the main body case 1. The main body case 1 includes a built-in cord reel (not shown) for winding and organizing a motor 4 and a power cord. An airtight gasket 5 having a bumper function is interposed between the upper case 2 and the lower case 3. A dust collection section 6 is formed within the main body case 1 with this airtight packing 5 interposed therebetween. A box-shaped dust collection case 7 is arranged within the dust collection section 6. The inside of the dust collection case 7 serves as a dust collection chamber 8. A packing 9 is attached to the periphery of the dust collection case 7, and this packing 9
The dust collection case 7 is connected to the upper case 2 and the lid body 10 through
It is fitted between the dust collector 6 and the dust collector 6, and is airtightly housed in the dust collecting section 6. A lid 10 is disposed corresponding to the opening 11 of the dust collection case 7 so as to be openable and closable. Lid body 1
0 is rotatably provided in the main body case 1 by a rotating shaft 12. This lid body 10 is provided with a suction port 13 to which a hose (not shown) is attached, and a communication portion 14 that communicates with the inside of the dust collection case 7. Mounting plate 18 having filter section 16 and suction port 17
Disposable bag-like filter 1 composed of
5 is placed inside the dust collection case 7. A rotary plate 19 is rotatably fixed to one side of the opening surface of the dust collection case 7. A locking protrusion 20 is integrally provided on the other side of the opening surface of the dust collection case 7. The mounting plate 18 of the bag-shaped filter 15 is held by a rotary plate 19 and a locking projection 20. A connection gasket 21 is attached to the outer periphery of the communication pipe portion 14 of the lid body 10,
A bag-shaped filter 15 is airtightly communicated with the hose suction port 13. A paper bag storage section 22 is formed on the back side of the lid 10. A clamp 23 is provided on the lower case 3, and the lid body 10 is locked therein.
A rotating handle 24 for carrying the vacuum cleaner is attached to the upper case 2. Movable wheels 25 and fixed wheels 26 for moving the vacuum cleaner are attached to the lower case 3. A pedal 27 for winding the cord reel is attached to the upper case 2.

As shown in FIGS. 4 to 6, a relatively long thick outer peripheral part 51 and a thick inner peripheral part 52 that cover the upper end of the lower case 3, and a thin connecting part 53 connecting therebetween. An airtight packing 5 is attached. The airtight packing 5 further includes a thin rising portion 56 from the outer circumferential side of the intersection of the outer circumferential portion 51 and the connecting portion 53.
is formed, and a lip 54 is formed that slopes upward and inward from the upper end of this rising portion 56,
A protrusion 55 is formed that protrudes upward from the outer periphery of the upper surface of this lip 54. The lower surface of the lower end of the upper case 2 is pressed by the lip 54 of the airtight packing 5, and the inner peripheral part of the protrusion 55 is brought into contact with the outer peripheral surface of the lower end of the upper case 2.

When the motor 4 is driven, the dust collecting part 6 which is kept airtight by the airtight gasket 5 becomes negative pressure, and the dust flows in from the hose connected to the suction port 13 and passes through the communication pipe part 14 to the bag-shaped filter 15. The air is filtered and only clean air is discharged. When the bag-like filter 15 is full of garbage, remove the clamp 23, open the lid 10, throw away the bag-like filter 15, and then open the spare paper bag storage section 2.
Remove the bag-shaped filter 15 from 2 and remove the rotary plate 1.
9 and the locking protrusion 201 are set, and the lid body 10 is closed.

According to this vacuum cleaner, a thin rising part 56 is formed from the outer periphery of the intersection of the outer periphery 51 of the airtight packing 5 and the connecting part 53, and the thin rising part 56 is inclined inwardly and upwardly from the upper end of the rising part 56. Protruding lip 5
4, and an upper case 2 is formed on the upper surface of this lip 54.
Since the lower surface of the lower end of the upper case 2 is pressed, even if the lip 54 is easily greatly deformed and the lower end of the synthetic resin upper case 2 has poor flatness,
The upper case 2 reliably follows the entire circumference and maintains the contact state at a predetermined interval δ, and the lower surface of the lower end of the upper case 2 is always pressed against the reaction force P of the lip 54, thereby maintaining airtightness. Further, since the protrusion 55 is formed upward from the outer periphery of the upper surface of the lip 54, when the lower surface of the lower end of the upper case 2 is pressed against the upper surface of the lip 54 and the lip 54 is deformed downward, the protrusion 55 is
It is pulled by the force and the outer peripheral surface of the lower end of the case 2 is
The pressure is applied with force, and the protrusion 55 also maintains airtightness, achieving double airtightness. At the same time, the upper case 2 and the lower case 3 are strongly tightened with screws, and the lower end of the upper case 2 is Even if the portion tries to expand in the outer circumferential direction, this is prevented by the force W that pulls the projection portion 55 inward. Furthermore, since the outer peripheral part 51 and the inner peripheral part 52 of the airtight packing 5 are made thicker and the connecting part 53 is made thinner, the lip 54 and the connecting part 5 are made thicker.
3, and it becomes easy to widen the outer peripheral part 51 and the inner peripheral part 52 when the airtight packing 5 is mounted on the lower case 3, and the mounting work can be facilitated.

〔Effect of the invention〕

According to the present invention, even if the flatness of the lower end of the synthetic resin upper case is poor, the airtight packing can sufficiently follow the flatness to maintain airtightness, and the lip and protrusion can be formed on the lower surface of the lower end of the upper case. It is possible to maintain double airtightness between the upper case and the outer circumferential surface, and even if the upper case and lower case are tightly tightened, it is possible to prevent the lower end of the upper case from spreading toward the outer circumference. It is possible to provide a vacuum cleaner that can be attached to a vacuum cleaner.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the vacuum cleaner of the present invention, Fig. 2 is a partial sectional view of the vacuum cleaner, Fig. 3 is a perspective view of the vacuum cleaner with the lid open, and Fig. 4. is a plan view of the airtight gasket used in the same vacuum cleaner, No. 5
The figure is an enlarged cross-sectional view of the airtight packing, Figure 6 is an enlarged cross-sectional view of the airtight packing installed, Figs.
The figure is an explanatory cross-sectional view of a conventional packing. 1...Body case, 2...Upper case, 3...Lower case, 5...Airtight packing, 51...Outer periphery,
52...Inner circumference part, 53...Continuous part, 54...Rip, 55...Protrusion part, 56...Rising part.

Claims (1)

[Claims] 1. A synthetic resin upper case 2 and a lower case 3 are combined to form the main case 1, and a relatively long outer peripheral part 51 and inner peripheral part 52 are connected so as to cover the upper end of the lower case 3. In a vacuum cleaner in which an airtight packing 5 consisting of a connecting portion 53 is attached, and the lower end of the upper case 2 is brought into contact with the airtight packing 5, an outer circumferential portion 51 and an inner circumferential portion 52 of the airtight packing 5 are provided. and the connection part 5.
3 is made thin, and the outer peripheral part 51 of the airtight packing 5 is
A thin rising part 56 is formed from the outer circumferential side of the intersection of the connecting part 53 and the upper end of the rising part 56. A protrusion 55 is formed that protrudes upward from the upper case 2, and the lower surface of the lower end of the upper case 2 is pressed against the upper surface of the lip 54, so that the inner circumferential portion of the protrusion 55 comes into contact with the outer circumferential surface of the lower end of the upper case 2. A vacuum cleaner characterized by the fact that it touches the surface.