JPH08196489A - Existence detection mechanism for vacuum cleaner filter - Google Patents

Abstract

PURPOSE: To provide an existence detection mechanism for a vacuum cleaner capable of easily noticing that the paper bag of the vacuum cleaner is out of place by making the height of the positioning pin is equal to the thickness of a filter support body or lower. CONSTITUTION: A filter support of this existence detection mechanism for a vacuum cleaner filter has construction to support the filter support body 8 by two faces of a filter support plate 5 in the cleaner main body side and a filter receiver of the main body. By making the height h1 of a positioning pin 10 equal to or lower than the thickness h2 of the filter support body 8, the position of the filter support body 8 is determined and the construction that the filter support body 8 is easily out of place when the paper bag filter 1 falls off is realized. Thus, a dust collecting room lid 3 is not closed as far as a stopper 7 does not detect the filter support body 8. Thus, the dust collecting room lid is never closed in a condition that the paper bag filter is out of place, and a user can easily notice that the paper bag filter is out of place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for preventing a user from forgetting to install a paper bag filter in an electric vacuum cleaner.

[0002]

2. Description of the Related Art As a means for preventing a user from forgetting to attach a paper bag filter of an electric vacuum cleaner, a stopper protruding from the lid side of the dust collecting chamber detects the presence or absence of a filter support, and when the filter is not attached, the lid completely removes the lid. A mechanism to prevent tightening has been realized. At this time, a positioning pin is provided on the main body side and a corresponding positioning hole is provided on the filter support, and the two are fitted at the time of mounting so that the position of the filter support with respect to the stopper is always the same. Further, since the positioning pin has a small hole corresponding to the opening in the filter support of the paper bag filter, it is useful for confirming the front, rear, left and right mounting directions of the paper bag filter at the time of mounting. Conventionally, this positioning pin has been made to project higher than the thickness of the filter support for the purpose of securely mounting the filter support.

[0003]

In the above-mentioned mechanism, a method of detecting the thickness of the filter support by a stopper is adopted. For example, a structure in which the filter support is supported by a plurality of surfaces, and a positioning pin on a certain surface is used. If the filter support is raised by making the height higher so that it will not come off, even if the filter support body comes off from the other support surface having no positioning pin, it will not come off on the support surface having the positioning pin. When the lid of the dust collection chamber is closed in this state, the stopper detects the filter support, and the lid is completely closed with the paper bag filter removed, and the user of the vacuum cleaner is aware that the paper bag has been removed. If you start cleaning without realizing it, dust may enter the motor and circuits, shortening the life of the cleaner.

[0004]

The above-mentioned problems have been solved by making the height of the positioning pin, which has been made to protrude high in the past, to be equal to or lower than the thickness of the filter support.

[0005]

According to the present invention, when the filter supporting body is disengaged from the supporting surface other than the supporting surface having the positioning pin, the filter supporting body is easily disengaged from the supporting surface having the positioning pin without being caught by the positioning pin, and the paper bag The stopper can detect that it has come off. Therefore, since the lid does not close, the user of the vacuum cleaner can easily notice that the paper bag is detached.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 3 and 4 show a conventional example of mounting the paper bag filter 1. FIG. 3 shows an example in which there is no positioning pin, and FIG. 4 shows an example in which there is a positioning pin. In these examples, the filter support plate 5 is provided by the two surfaces of the filter support plate 5 on the cleaner body 2 side and the filter receiving portion 4 of the body. It has a supporting structure.

When the filter support 8 is detached from the filter support plate 5 for some reason during mounting, as shown in FIG.
The paper bag filter 1 is detached from the filter receiving portion 4 by its own weight and falls into the dust collecting chamber 6. At this time, if the dust-collecting chamber lid 3 is to be closed, the stopper 7 detects that the filter support 8 is not present, and the lid is not closed. In FIG. 4, since the filter support 8 is caught by the long positioning pin 10 and remains on the filter receiving portion 4 of the main body, the stopper 7 detects the filter support 8 when the dust collection chamber lid 3 is closed. The lid closes (Fig. 5).

That is, in FIG. 1, the dropout of the paper bag filter 1 is surely detected, but since the positioning pin 10 is not provided, the user can easily make a mistake when mounting the paper bag filter 1.
Further, in FIG. 2, although the positioning pin 10 is provided, the fall detection of the paper bag filter 1 is uncertain.

On the other hand, in the embodiment of the present invention shown in FIG.
By setting the height h1 of the positioning pin 10 to be equal to or less than the thickness h2 of the filter support 8 (FIG. 2),
At the same time that the position of the filter support 8 is determined, when the paper bag filter 1 falls off, the filter support 8 is easily removed (FIG. 6). Therefore, the stopper 7 does not detect the filter support 8 and the dust collection chamber lid 3 does not close.

FIG. 7 is a sectional view of the entire vacuum cleaner to which the present invention is applied. After the dust collection chamber, the main body case 11 has an electric blower 12, a control circuit board 13, an exhaust filter 14, and an exhaust port 15, and an intake port 16 is provided above the dust collection chamber. In addition, casters 17, 18 and wheels 19 are provided at the bottom of the main body.
And have the ability to move.

[0011]

According to the present invention, the lid of the dust collecting chamber is not closed while the paper bag filter is removed, and the user can easily notice that the paper bag filter is removed.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of an embodiment of the present invention.

FIG. 3 is an explanatory view of a conventional example without a positioning pin.

FIG. 4 is an explanatory diagram of a conventional example with a positioning pin.

FIG. 5 is an explanatory diagram of an effect of a conventional example having a positioning pin.

FIG. 6 is an explanatory diagram of an effect of the embodiment of the present invention.

FIG. 7 is an overall sectional view.

[Explanation of Codes] 1 ... Paper bag filter, 2 ... Vacuum cleaner body, 3 ... Dust collection chamber lid, 4
... filter receiving part, 5 ... filter support plate, 6 ... dust collecting chamber,
7 ... Stopper, 8 ... Filter support, 9 ... Paper bag, 10 ...
Positioning pin.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masao Sunagawa 1-1-1 Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Electric Co., Ltd. Electronics Equipment Division Taga Headquarters

Claims (1)

[Claims] 1. A positioning small hole made of a partially opened air-permeable paper bag to be attached to a support portion of a paper bag filter of a cleaner body and a non-air-permeable cardboard adhesively fixed to the opening of the paper bag. In a filter detection mechanism consisting of a paper bag filter consisting of a filter support having, a filter support positioning pin on the cleaner body filter receiving side, and a stopper for detecting the paper bag filter protruding from the cleaner body dust collection chamber lid, A detection mechanism for the presence or absence of a filter for a vacuum cleaner, wherein the height of the positioning pin is equal to or lower than the thickness of the filter support.