JPH06133901A - Seal packing for electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To enhance easiness in the shaping process for a seal packing and prevent air leakage by the use of this seal packing. CONSTITUTION:This seal packing 21 has a fillet 21a, which is furnished at the tip with a projection 21b. The projection 21b is positioned upright in a location outermore than the exterior wall 5a of a dust collecting chamber lid 5 and on the chamber lid 5 side when the seal packing 21 is interposed between the body 4 of vacuum cleaner and the chamber lid 5 for sealing the lid 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner in which a dust collecting chamber is formed between a main body of an electric vacuum cleaner and a dust collecting chamber lid with a seal packing, and more particularly to the shape of the seal packing.

[0002]

2. Description of the Related Art Conventionally, as an electric vacuum cleaner, for example, an upright type electric vacuum cleaner 1 as shown in FIG. 4 is known. 2 is a floor nozzle, and a rotating brush 3 that scrapes dust on the front part
Built in. Reference numeral 4 denotes a cleaner main body provided behind the floor nozzle 2 in a freely movable manner, and a dust collecting chamber lid 5 is attached to the front of the floor nozzle 2 via a flexible seal packing 6 so as to be pressure-bondable and removable. A dust collection chamber 7 is formed between the main body 4 and the main body 4.

Reference numeral 8 is a motor provided below the cleaner body 4. The motor 8 serves as a drive source for rotating the rotating brush 3 and dust suction. Rotational force is applied to the rotating brush 3 via a belt 10 by a shaft portion 9 protruding from one end of a motor 8.

Reference numeral 11 denotes a connecting hose, one end of which is the floor nozzle 2,
The other end is a dust suction tube 12 provided on the upper back surface of the cleaner body 4.
It is attached to one end of. A filter 13 made of cloth or paper is inserted into the other end of the dust collection tube 12, that is, the dust collection chamber 7 with a slight pressure.

Reference numeral 14 is a handle for moving the floor nozzle 2 and the cleaner body 4 back and forth and to the left and right, and a handle 15 is attached to the tip of the handle 14.

FIG. 5 is a front view of the electric vacuum cleaner of FIG.
FIG. 6 is a sectional view of a main part taken along the line AA in FIG. The seal packing 6 is provided to seal the space between the cleaner body 4 and the dust collecting chamber lid 5 to prevent air leakage. In order to improve the airtightness, the shape of the seal packing 6 is such that the fin portion 6a that abuts the outer peripheral wall 5a of the dust collection chamber lid 5 has a slight inclination, or has a flattened approximately uniform thickness, and the other thickness. It is thinner than the part.

When the electric vacuum cleaner 1 constructed as described above is operated, the inside of the dust collecting chamber 7 becomes negative pressure, and the dust collecting chamber lid 5 is pulled toward the dust collecting chamber 7 side, and therefore the dust collecting chamber lid is closed. 5 outer peripheral wall 5a
And the seal packing 6 are pressed against each other, so that the vacuum cleaner body 4 and the dust collecting chamber lid 5 are more closely sealed.

If the airtightness of the seal packing 6 is poor and there is a gap between the cleaner body 4 and the dust collecting chamber lid 5, air leakage occurs from the gap and the dust absorption force is increased. Cause a decrease in.

[0009]

The above-mentioned seal packing 6 is formed of a flexible material such as rubber or vinyl chloride, but in the seal packing 6 having the above-mentioned shape,
As shown in FIG. 7 (a), the fin portion 6a is not sufficiently filled with the material at the time of molding, or even if the fin portion 6a is filled, it becomes a wavy shape as shown in FIG. Was the cause.

Further, even though the vacuum cleaner body 4 and the dust collecting chamber lid 5 press-contact the seal packing 6 by using the seal packing 6 of a good molding as shown in FIG. The fin portion 6a is pulled toward the dust collecting chamber 7 side by the pressure, and a gap is generated between the cleaner body 4 and the dust collecting chamber lid 5 to cause air leakage, resulting in a decrease in the dust suction force. Was there. Therefore, an object of the present invention is to provide a seal packing that improves moldability and further improves hermeticity.

[0011]

In order to achieve the above object, the present invention provides a cleaner body and a dust collection chamber lid which is attached to the body so as to be openable and closable to form a dust collection chamber and the body. In a seal packing for an electric vacuum cleaner, which is interposed between a dust chamber lid and a dust chamber lid, a protrusion is provided on the entire outer circumference of the seal packing that comes into contact with the dust chamber lid to improve moldability.

Further, by vertically setting the projection on the dust collecting chamber lid side, it is possible to prevent the seal packing from being pulled during operation and improve the airtightness.

[0013]

By providing the protrusions on the fins of the seal packing, the material is filled up to the tip of the fins during molding, and the fins after molding do not have a wavy shape.

Further, since the protrusion is erected on the dust collecting chamber lid side, even if the seal packing is pulled while the cleaner is operating, the protrusion contacts the outer wall of the dust collecting chamber lid and seals the dust collecting chamber lid. There is no gap between the packing and air leakage.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Since the basic structure of the electric vacuum cleaner is the same as the structure described in the conventional art, detailed description thereof will be omitted.

The difference between the prior art and the present invention lies in the shape of the seal packing, and the seal packing will be described in detail below. The same parts as in the prior art will be designated by the same reference numerals.

FIG. 1 is a plan view of a seal packing 21 of the present invention, FIG. 2 is a cross-sectional view of the main part of BB in FIG. 1, and FIG. 3 shows the seal packing 21 as a cleaner body 4 and a dust collecting chamber lid 5. FIG. 6 is a cross-sectional view of a main part corresponding to the AA cross section of FIG. 5 of the conventional technique showing a state of being interposed between the two. The seal packing 21 is
The fin 21a is formed of a flexible material such as rubber or vinyl chloride, and a protrusion 21b is provided at the tip of the fin 21a.

The protrusion 21b may be provided in any of the upper and lower directions, but it is preferable to provide the protrusion 21b so as to stand upward for the reason described later.

Since the seal packing of the present invention has the above-mentioned shape, when molding the seal packing, the material is sufficiently filled up to the protrusion 21b provided at the tip of the fin 21a. As a result, waviness at the tip of the fin 21a can be prevented, and the yield of molded parts is improved.

When the seal packing 21 is interposed between the cleaner body 4 and the dust collecting chamber lid 5 to seal the body 4 and the lid 5 and the electric vacuum cleaner 1 is operated, dust is collected. Although the dust collection chamber lid 5 is pulled toward the dust collection chamber 7 side by the negative pressure of the chamber 7, and the seal packing 21 is pulled inside,
The protrusion 21b provided on the seal packing 21 abuts the outer wall 5a of the dust collecting chamber lid 5, and the seal packing 21 is not pulled further inward, so that the dust collecting chamber lid 5 is kept sealed.

[0021]

Since the present invention is constructed as described above, it has the following effects.

At the time of molding the seal packing, it is possible to prevent insufficient filling of the material and waviness of the fins after molding, and it is possible to improve the yield of molded parts.

Further, when the vacuum cleaner is in operation, even if the seal packing is pulled due to the negative pressure in the dust collecting chamber, the projection of the fin portion may come into contact with the outer wall of the dust collecting chamber lid and the seal packing may be pulled further. Since it does not exist, it is possible to prevent air leakage during operation.

[Brief description of drawings]

FIG. 1 is a plan view of a seal packing of the present invention.

FIG. 2 is a cross-sectional view of the main part of BB of FIG.

FIG. 3 is a sectional view of an essential part showing a mounted state of the seal packing of the present invention.

FIG. 4 is a cross-sectional view of a main part of an upright electric vacuum cleaner.

5 is a front view of the electric vacuum cleaner shown in FIG. 4. FIG.

6 is a cross-sectional view of the main part of AA in FIG.

7A and 7B are state diagrams of a conventional seal packing during molding, FIG. 7A is a top view illustrating insufficient filling, and FIG. 7B is a front view illustrating a corrugated state.

[Explanation of symbols]

 4 Vacuum cleaner body 5 Dust collection chamber lid 7 Dust collection chamber 21 Seal packing 21a Fins 21b Protrusion

Claims (2)

[Claims] 1. A seal packing to be interposed between the main body and the dust collecting chamber lid for forming a dust collecting chamber by a cleaner body and a dust collecting chamber lid attached to the main body so as to be openable and closable.
A seal packing for an electric vacuum cleaner, characterized in that a protrusion is provided on the entire outer circumference of the seal packing that comes into contact with the dust collection chamber lid. 2. The seal packing for an electric vacuum cleaner according to claim 1, wherein the protrusion of the seal packing is provided upright on the dust collection chamber lid side.