EP1919342A1 - Störungsanzeigevorrichtung für staubsauger - Google Patents
Störungsanzeigevorrichtung für staubsaugerInfo
- Publication number
- EP1919342A1 EP1919342A1 EP06764072A EP06764072A EP1919342A1 EP 1919342 A1 EP1919342 A1 EP 1919342A1 EP 06764072 A EP06764072 A EP 06764072A EP 06764072 A EP06764072 A EP 06764072A EP 1919342 A1 EP1919342 A1 EP 1919342A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- housing
- projection
- fault indicator
- piston housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/19—Means for monitoring filtering operation
Definitions
- the invention relates to a device according to the preamble of
- Such fault indicator devices are used to signal the user of a vacuum cleaner, the filling of the dust bag, a blockage of the dust filter or the dust pipe in a simple way.
- the fault indicator devices respond to the conditional by the fault sudden increase of the negative pressure in the vacuum cleaner.
- a known such Staubsaugerstungsan Attache is described by DE-GM 84 06 748. It consists of a housing provided with a viewing window, in which a displaceable piston is arranged, which communicates with a tension spring, which holds him in the rest position.
- the fault indicator is constructed and arranged in the vacuum cleaner so that its piston communicates with the atmosphere on one side of the piston and with the vacuum on the other side of the vacuum cleaner.
- spring force and pressure difference keep the balance, the piston remains in its rest position. If malfunctions occur, the negative pressure in the vacuum cleaner suddenly increases, the piston shifts and the displacement is made visible to the user.
- Vacuum cleaner breakdown display device in which the piston is held with a compression spring in its rest position, which is then arranged on the piston also within the piston housing.
- the piston housing at one end to his
- a projection as a conclusion is very easy to manufacture, since it can be injected as part of the housing, together with the housing or can be molded onto this. In addition, such a projection as a conclusion ensures an extremely simple assembly, since spring and piston are simply pushed over the projection into the housing and then automatically remain in this.
- the projection additionally assumes a sealing function, so that the build-up of a pressure difference, which underlies the action of the display device, is not adversely affected by an air flow between the piston and the piston housing for pressure equalization within the display device.
- Inner side of the piston housing offset a little way into the interior of the housing, so that the side surfaces of the piston housing protrude a little way over the piston and thus act as additional sealing surfaces.
- Fault indicator device projection and piston housing are integrally formed. This ensures that the production of the piston housing with the projection is particularly easy in a single injection molding possible. Another advantage of this embodiment is that no possible break occurs when projection and housing consist of one piece. Thereby, it can be prevented that the projection easily breaks off upon penetration of the piston into the housing.
- Fault indicator is the invention attached Projection formed so that it protrudes further and further into the piston housing, the further he is inside the piston housing. So it is rising to the interior of the piston housing formed. This ensures that the piston slides well over the projection when inserted into the piston housing and does not break it off the housing.
- the projection on the interior of the piston housing facing side on a steep edge As a result, the projection and the piston housing side form a step against which the piston abuts. This edge holds the piston inside the housing and prevents it from being pushed out of the piston by the spring holding it in this position.
- the projection does not rise very far beyond the wall of the piston housing.
- the height of the projection should not exceed 10% of the height of the piston housing at the location of the projection. This ensures that the piston can overcome the projection during its introduction, without breaking it, especially if the piston is made of a stable not too elastic plastic, as is necessary for a stop.
- the projection is formed symmetrically with respect to the piston. This can be realized, for example, by providing identical projections on two piston housing sides. This ensures that the piston always abuts on both sides, whereby tilting of the piston is prevented in the piston housing.
- the projection can be realized in a variety of configurations. It is particularly easy to manufacture this as a single knob. But would also be possible a bead-like elevation on one or more inner sides of the piston housing. Also, a stable lamella oriented into the piston interior would be suitable for letting the piston slide in one direction while holding it in the other direction as a stop.
- a stable lamella oriented into the piston interior would be suitable for letting the piston slide in one direction while holding it in the other direction as a stop.
- various embodiments conceivable, which always be designed need to be easy to overcome in one direction while blocking in the other direction.
- FIG. 1 shows schematically a cross section through a fault indication device according to the invention.
- a piston housing 1 has a transparent window 2, which is provided with a plastic lens 3.
- the piston 4 abuts on the piston end to a nub 6, which is arranged on the inside of the piston housing 1.
- the piston 4 is connected to the nub fixed side with atmospheric air.
- the piston housing 1 On the spring side, the piston housing 1 has an outlet 7, which communicates with a vacuum chamber in the vacuum cleaner. As a result, the spring-facing side of the piston 4 is subjected to negative pressure.
- the fault indicator is arranged on the vacuum cleaner so that the viewing window and plastic lens are visible to the outside and one side of the piston housing with the air in the atmosphere is in communication, while the other side of the piston housing 1 communicates with a vacuum cleaner room, in which the startup of the vacuum cleaner vacuum prevails.
- the piston 4 is acted upon by a pressure difference, which presses it in the piston housing in the direction of the coil spring.
- the spring force of the coil spring 5 is designed so that the piston 4 remains in the normal operation of the vacuum cleaner in its rest position.
- the negative pressure inside the vacuum cleaner substantially increases. Due to the greatly increased negative pressure of the piston 4 against the coil spring 5 in the direction of the viewing window. 2 postponed. Through the plastic lens 3, the user sees from the outside the displacement of the piston and is informed immediately about the present in the vacuum cleaner disturbance.
- Fig. 2 shows a detail of the fault display device shown in Fig. 1. It is mainly the end of the piston housing 1 shown, which is designed as a stop for the piston 4.
- a nub 6 is provided on the inside of the piston housing.
- the nub 6 is designed so that it closes well on the piston side with as wide a surface as possible with the piston. Since the piston 4 has a straight end surface, the nub 6 also drops on the piston side with a straight end surface. In contrast, the nub 6 rises on the side facing away from the piston 4 very flat up to its final height.
- the smooth drop of the piston-side end of the nub 6 serves to fix the piston in the interior of the piston housing.
- the shallow rise of the side facing away from the piston 4 of the knob 6 ensures that the piston can be introduced during assembly of the fault indicator device via the knob in the piston housing, without damaging the knob 6 thereby.
- the sides of the piston housing 1 are extended so that they protrude beyond the piston 4 and thus serve as additional sealing surfaces 8. As a result, it can be prevented that a pressure equalization between atmospheric pressure and negative pressure takes place inside the piston housing, which would impair the functioning of the fault indicator device.
- the invention constructed stop for the piston can be advantageously used.
- a stop can also be used in a fault indicator device, wherein the piston is slidably disposed in the piston housing, a return spring, but is arranged parallel to this outside of the piston housing, which is designed as a tension spring.
- the metal coil spring which is described in the exemplary embodiment, to use a plastic spring or a bellows or other pressure-exerting known elements.
- the knob other embodiments are conceivable. So could serve as a stop also a bead which extends along the inner sides of the piston housing.
- a wedge-shaped stop would be conceivable, which could also be attached to one or more inner sides of the piston housing.
- all possible configurations are conceivable as a stop, which ensure that the piston can be pushed over it from outside the piston housing without damaging it, but the piston, as soon as it is in the piston housing, is held on the other side of the elevation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202005012503U DE202005012503U1 (de) | 2005-08-09 | 2005-08-09 | Störungsanzeigevorrichtung für Staubsauger |
| PCT/EP2006/063915 WO2007017320A1 (de) | 2005-08-09 | 2006-07-05 | Störungsanzeigevorrichtung für staubsauger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1919342A1 true EP1919342A1 (de) | 2008-05-14 |
| EP1919342B1 EP1919342B1 (de) | 2012-05-02 |
Family
ID=35502216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06764072A Not-in-force EP1919342B1 (de) | 2005-08-09 | 2006-07-05 | Störungsanzeigevorrichtung für staubsauger |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1919342B1 (de) |
| AT (1) | ATE555705T1 (de) |
| DE (1) | DE202005012503U1 (de) |
| WO (1) | WO2007017320A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007040946B4 (de) | 2007-08-30 | 2011-02-10 | Miele & Cie. Kg | Staubsauger mit einem Gehäuseteil, welches in einem Spritzgussverfahren aus Kunststoff hergestellt ist |
| DE102009035717A1 (de) | 2009-07-31 | 2011-02-10 | Miele & Cie. Kg | Verfahren zur Anzeige eines Füllgrads eines Staubbeutels und Steuerungsvorrichtung zur Ausführung des Verfahrens |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4416033A (en) * | 1981-10-08 | 1983-11-22 | The Hoover Company | Full bag indicator |
| DE8406748U1 (de) * | 1984-03-05 | 1984-06-14 | Rowenta-Werke Gmbh, 6050 Offenbach | Staubsaugerfuellanzeige |
| US7418763B2 (en) * | 2003-02-26 | 2008-09-02 | Black & Decker Inc. | Hand vacuum with filter indicator |
| KR20050026163A (ko) * | 2003-09-09 | 2005-03-15 | 삼성광주전자 주식회사 | 진공청소기의 모터 과부하 방지장치 |
| DE102004040985A1 (de) * | 2004-08-24 | 2006-03-02 | BSH Bosch und Siemens Hausgeräte GmbH | Staubsauger mit angeformtem Ventilgehäuse |
-
2005
- 2005-08-09 DE DE202005012503U patent/DE202005012503U1/de not_active Expired - Lifetime
-
2006
- 2006-07-05 EP EP06764072A patent/EP1919342B1/de not_active Not-in-force
- 2006-07-05 WO PCT/EP2006/063915 patent/WO2007017320A1/de not_active Ceased
- 2006-07-05 AT AT06764072T patent/ATE555705T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007017320A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE555705T1 (de) | 2012-05-15 |
| DE202005012503U1 (de) | 2005-12-08 |
| EP1919342B1 (de) | 2012-05-02 |
| WO2007017320A1 (de) | 2007-02-15 |
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