DE3244417C2 - Lock for hinged external filter cassettes - Google Patents

Abstract

It is a lock for hinged external filter cassettes, which are closed on the underside by a cover, with two retaining pins locking each one in a horizontal and once in a vertical direction. One holding pin dips into an opening on the filter cassette and the other holding pin into an opening on the cover.

Description

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re external filter cassettes of handheld vacuum cleaners, which have a cover on the underside which of the paper filter bags arranged in the filter cassette is attached, the filter cassette hinged to the vacuum cleaner housing via a double hinge is

In the case of hinged filter cassettes, as evidenced by the German utility model 81 32 286, the filter cassette must be held on one side of the vacuum cleaner housing, as they are on the other side in a double hinge is pivotable.

This bracket splinted by a swiveling spring-loaded hook, which the movement of the Secures the filter cassette in a vertical and horizontal direction.

The hook engages in the filter cassette and holds it in place.

With this bracket, however, it is possible, for example, to attach the filter cassette, although the user forgot the cover on the underside of the filter cassette

Since this cover also carries the paper filter bag, the filter cassette would be without a cover and without a paper filter bag can be operated.

The object of the invention is now to design the holder or locking so that in the aforementioned Filter cassettes cannot be operated without a lid.

According to the invention, the object is achieved in that two at right angles to each other on the vacuum cleaner housing Holding pins are arranged, of which at least one is movable and the horizontal Handle in a recess in the filter cassette and the vertical retaining pin in a recess in the lid intervenes.

Thus, the invention has the decisive advantage that a lock is created which at hinged filter cassettes prevent operation if the lid is missing.

An embodiment of the invention is drawn and described below. It shows

F i g. 1 a prior art lock with a hook,

F i g. 2 shows a lock according to the invention in partial section,

F i g. 3 the arrangement according to FIG. 2 without cover.

The F i g. 1 shows the state of the art, as it is usually used, as a cross section on the vacuum cleaner housing 1, a filter cassette 2 is arranged pivotably over the double hinge 1 in the filter cassette 2 there is an opening 4 through which a hook 5 extends

This is pivotably attached in the vacuum cleaner housing 1 and can be moved to the release position by pressing the button 6 be swiveled.

The hook 5 now holds the filter cassette 2 both in the horizontal and in the vertical direction

In contrast to the prior art, FIG. 2 the invention in a section 90 ° to FIG. 1 shown

In the vacuum cleaner housing 1 there is a holding pin 7 which can be moved in the direction of the arrow. This holding pin 7 engages in the opening 4 in the filter cassette 2, in which in Fig. 1 the hook 5 engages

The filter cassette 2 sits on the vacuum cleaner housing 1 and can be pivoted there by the double hinge 3 held on one side.

At the same time, a fixed retaining pin S is arranged on the vacuum cleaner housing 1, which is inserted into an opening § on the Lid 10 engages The lid 10 closes the filter cassette 2 on the underside and can be removed therefrom, since it carries the paper filter bag (not shown) arranged in the filter cassette 2

It can be seen here that the locking function is divided such that the retaining pin 7 takes over the locking in the vertical direction and the retaining pin 8 the locking in the horizontal direction, d. i.e., in the direction of the double hinge 3.

If the user now forgets after replacing the paper filter bag this together with the lid 10 in the filter cassette 2 to be reinserted, then from FIG. 3 it can be seen that the retaining pin 7 is immersed in the opening 4 can, but the retaining pin 8 cannot have a locking function due to the missing cover 10 or its opening 9 Exercise more in the horizontal direction. This leads to the fact that when using the vacuum cleaner the filter cassette 2 -Automatically in the direction of the arrow, since it is not locked in this direction. The user is thus shown that the cover 10 under the filter cassette 2 is missing. Working with the vacuum cleaner is thus without a cover 10 not possible.

For this purpose 2 sheets of drawings

Claims (1)

Claim: Lock for hinged external filter cassettes of handheld vacuum cleaners, which have a lid on the underside, on which the in the filter cassette arranged paper filter bag is attached, wherein the filter cassette has a double hinge is hinged to the vacuum cleaner housing, thereby characterized in that the vacuum cleaner housing (1) has two at right angles to one another Holding pins (7,8) are arranged, of which at least one is movable and the horizontal retaining pin (7) in an opening (4) in the filter cassette (2) and the vertical Halüestift (8) in an opening (9) engages in the cover (10)