EP0616179B1 - Closing device for an air passage - Google Patents

Abstract

There exists a closing device in which two slotted plates 1, 4, 5 are arranged parallel to one another and in which, in the open position, the slots 2 of the plates 1, 4, 5 are in alignment and, in the closed position, in each case webs 3 of the one plate cover slots 2 of the other plate, and also the plates lie tightly one against the other. It is desired here to ensure continuously adequate pressure-tightness in the closed position and to avoid the rubbing of the plates against one another upon displacement of the plates relative to one another. This is achieved in that the two plates 1, 4, 5 are connected to one another by means of articulated arms 8 arranged at the edges, which articulated arms are arranged obliquely inclined in one direction in the closed position and, during the transition of the plates into the open position, lift the latter off from one another. If the second slotted plate is displaced relative to the first, it also performs, in accordance with the radius of the articulated arm, a movement at right angles to the first plate, with the result that it lifts off from the first plate. <IMAGE>

Description

The invention relates to a closure device for an air passage according to the preamble of claim 1.

In a termination device known from practice there are only two slotted plates at all times, i.e. in the outward and movement, in the open position and in the closed position close together. A sudden increase in pressure indoors, caused by pressure waves occurring outside, through ventilation openings, e.g. the air conditioning, indoors to prevent intrusion, quickly closing Closures needed, on the one hand a sufficient basic density, on the other hand a relatively low air resistance and have high closing speed. The simplest version Such a closure is the so-called slider in which two slotted plates face each other be moved so that in the open position the slots one above the other are and the slot of the first in the closed position Plate with the bridge of the second plate comes to coincide. The present termination device serves for this purpose.

In order to achieve sufficient pressure tightness, it is necessary that the plates slide very closely together, which makes it in the known termination device gives significant problems. There are a high sliding resistance and high wear due to sliding There is friction. Even with relatively little pollution The sliding surfaces jam and fix the slotted plates. With moisture, even with normal Humidity, combined with frost, freezes the sliding surface firmly. There is a loss of tightness depends on the state of wear.

In a known (FR-A-1 377 858) termination device of the aforementioned Art are in the movable plate, the webs with the plate frame in one piece and the webs with the plate frame lie in a common plane. A gap-free sealing only results if the webs of the movable plates are continuous lie close to the plate frame and the bars of the immovable plate. As soon as the immovable plate and / or the movable plate an unevenness has a continuously gap-free seal is no longer given.

An object of the invention is to provide a termination device procure of the type mentioned, in which the sufficient Pressure tightness continuously ensured in the closed position is and when moving the plates against each other Rubbing the plates against each other is avoided. The invention Closing device has, solving this problem, the characterizing features of claim 1.

Sit by the spring attachment of the webs or slats these, when they cover the slots, according to the spring preload pressure fed up. Due to the resilient suspension of the Ridges has been achieved so that each ridge or lamella is possible Unevenness of the stationary plate, dirt or Wear conditions can adjust without the sealing seat other webs or slats is negatively affected.

The first slotted plate is e.g. rigidly arranged. If the second slotted plate is displaced relative to the first, also makes one according to the radius of the articulated arms movement perpendicular to the first plate, causing it to move away from the first plate stands out. This creates sliding friction between the two plates avoided during the moving process. The Disadvantages described above are due to the inventive Design fixed. Always lie in the closed position the plates are full again and guarantee the required Tightness. The tightness does not change, as possible Wear compensated for by changing the articulated arm position becomes.

It is particularly expedient and advantageous if three slotted ones Plates are provided and each of the two outer ones Plates are connected to the middle plate by articulated arms. It is the Glenkarm connection on a three-platen closure intended. This version primarily offers the Advantage that they are approximately the same in both air directions Has pressure tightness. For example, the middle plate is immobile arrange, the drive link on the two attacks the outer plates.

However, it is particularly expedient and advantageous if the one of the two outer plates is immovably arranged, the other outer plate at a right angle to the plate plane Guide is slidable and the drive member on the middle plate attacks. In this embodiment, the ratios are one Pressure-tight sealing device for air inlets and ventilation ducts especially given. For example, the two outer plates with their slots congruently rigidly connected. It becomes the middle plate between the two outer ones Plates moved so that the slots in the open state of the three plates are congruent and in the closed state the ridges of the middle plate the slots of the outer Cover the plate.

It is also particularly expedient and advantageous if in the open position the plates lie close together and the articulated arms slanted in an opposite direction are. The plates are fixed in the closed position and in the open position supported against each other and lifting during the back and forth movement from each other.

It is particularly expedient and advantageous if the spring preload the compression springs are adjustable. It can by Adjusting the spring preload the closing pressure of each Slats or the individual webs are set so that optimal Tightness is reached.

It is then particularly expedient and advantageous if the fixed plate on the movable plate opposite side with a sound-absorbing mass is coated and / or if the stationary plate to one Support piece is fixed supported by screwing and if one between the stationary plate and the support piece sound-absorbing intermediate layer is inserted. In the closure device according to the invention with the lifting and reattaching plate occur in the Connection with the high speed of closing and Opening movement on considerable noise, which by the soundproofing coating e.g. from Teroson, and the sound absorbing intermediate layer, e.g. from 2 - 5 mm thick Rubber to be steamed.

Fig.1

einen Schnitt einer nicht erfindungsgemäßen Abschlußvorrichtung für einen Luftdurchlaß in Offenstellung,

Fig.2

die Abschlußvorrichtung gemäß Fig. 1 in einer Stellung während des Öffnens und Schließens,

Fig.3

die Abschlußvorrichtung gemäß Fig. 1 in Schließstellung,

Fig.4

eine Vorderansicht der Abschlußvorrichtung gemäß Fig. 1

Fig.5

eine Draufsicht auf eine erfindungsgemäße Abschlußvorrichtung für einen Luftdurchlaß,

Fig.6

eine Seitenansicht der Abschlußvorrichtung gemäß Fig. 5 und

Fig.7

einen Schnitt gemäß Linie VII-VII in Fig. 5.

The invention is explained in more detail with reference to the drawing and shows in the drawing

Fig. 1

2 shows a section of a closure device according to the invention for an air passage in the open position,

Fig. 2

1 in a position during opening and closing,

Fig. 3

1 in the closed position,

Fig. 4

2 shows a front view of the termination device according to FIG. 1

Fig. 5

a plan view of a closure device according to the invention for an air passage,

Fig. 6

a side view of the termination device according to FIGS. 5 and

Fig. 7

a section along line VII-VII in Fig. 5th

1 to 4 has a stationary or immovably arranged plate 1, which is slotted. The same is used for all plates of the closure device Slot design provided. There are slots 2 which are designed as elongated windows, transversely to the back and forth Movement direction extend in one piece over the plate and are separated by webs 3, the dimensions of which are larger than that the window slots 2 are. Parallel to the immovable exterior Plate 1 is a middle plate 4 and a second outer one Plate 5 provided.

The second outer plate 5 is displaceable at right angles to the plate plane and on a transverse side via an extension 6 on one rod-like guide 7 attached. The slots 2 of the two outer plates 1, 5 are constantly in alignment. The middle plate 4 is on both long sides via two articulated arms 8 on both outer plates 1, 5 attached and both in the plate plane and can also be moved at right angles to the plate level. At the the Guide 7 opposite transverse side of the middle plate 4th a drive member 9 is attached. There are articulated arms 8 in Form arranged in pairs, the two articulated arms each have a common axis of rotation 10 on the middle plate. The leading to the immovable outer plate 1 and the movable outer plate 5 leading articulated arms 8 are each of equal length. 1 are the Articulated arms 8 inclined in one direction and at the 3 are the articulated arms in an opposite Sloping towards.

5 to 7 has a fixed or immovably arranged plate 1 which along its Peripheral edge is screwed to a support piece 11, which as circumferential frame is formed. This fixed plate 1 is slotted by slits 2 are provided, which are elongated Windows are formed, extending transversely to the reciprocating direction extend in one piece over the plate and through webs 3 are separated, whose dimensions are larger than that of the window slots 2 are. The stationary plate 1 forms a closed all-round plate frame 12, with the webs 3 in on a common level. Parallel to the immovable Plate 1 is a movable plate 4 is provided.

The movable plate 4 is essentially of independent, formed at the end free lamellar webs 13, the limit slits between them. Each slat-like web 13 carries a stiffening on the side facing away from the fixed plate 1 Rib 15. The webs 13 are wider and longer than that Slots 2 of the fixed plate 1. A plate frame 16 of the movable Plate 4 is formed by two longitudinal frame struts 17, on which the lamellar webs are suspended and those of the webs 13 are laterally protruded with end pieces. The two Longitudinal frame struts 17 are formed by two frame cross struts 22 connected to each other, the distance from the ends of the longitudinal frame struts have and these to the side with end pieces tower over. At each of these end pieces there is one end Articulated arm 8 articulated, the other end of the frame-like Carrier piece 11 is articulated.

The movable plate 4 is to the stationary plate 1 in the in 5 to 7 shown closed position in which the slat-like webs 13 of the movable plate 4, the slots 2 cover the stationary plate 1, and in an open position bringable, in which the slots 2 of the fixed plate released are. For this purpose, two piston-cylinder devices are on the carrier piece 11 8 provided on the movable plate 4th attack. The suspension of each of the lamellar webs 13 takes place by means of two bolts 19, each upwards protrude through one of the two longitudinal frame struts 17 and free end wear a mother 20. Between the Frame longitudinal strut 17 and the web 13 is one under Biasing helical compression spring 21 on the Screw 19 provided.

Claims (8)

1. A closing device for an air passage, with which two slotted plates (1, 4, 5) are arranged parallel to one another, one thereof being provided with a driving member (9) and being movable to and fro in the direction of the plate plane in relation to the other, with which in the open position, the slots (2) of the plates (1, 4, 5) are aligned and with which in the closing position, fillets (13) of the one plate cover in each case slots of the other plate and the plates lie close together, a plate frame bearing the fillets being provided, and with which the plates (1, 4, 5) are connected to one another by articulated arms (8) arranged at the edge thereof, these articulated arms (8) lifting the plates from one another when the latter pass into the open position, characterised in that in the case of the movable plate (4), the fillets (13) are separate parts from the plate frame (16) and are arranged below the plate frame while being supported thereagainst by compression springs (21).
2. A closing device in accordance with Claim 1, characterised in that the articulated arms (8) connecting two adjacent plates (1, 4, 5) are articulated on both plates and in the closing position of the plates are arranged inclined in one direction.
3. A closing device in accordance with Claim 1 or 2, characterised in that three slotted plates (1, 4, 5) are provided and each of the two outer plates (1, 5) is connected to the middle plate (4) by articulated arms (8).
4. A closing device in accordance with Claim 3, characterised in that one (1) of the two outer plates (1, 5) is arranged so as to be stationary, the other outer plate (5) is slidable on a guide (7) located at right angles to the plate plane, and the driving member (9) acts upon the middle plate (4).
5. A closing device in accordance with any one of the preceding Claims, characterised in that in the open position, the plates (1, 4, 5) lie close together and the articulated arms (8) are arranged inclined in the opposite direction.
6. A closing device in accordance with any one of the preceding Claims, characterised in that the spring prestressing force of the compression springs (21) is adjustable (20).
7. A closing device in accordance with any one of the preceding Claims, characterised in that the fixed plate (1) is coated with a sound-adsorbing compound on the side facing the movable plate (4).
8. A closing device in accordance with any one of the preceding Claims, the fixed plate being supported on a supporting piece and being fastened by screws, characterised in that a sound-absorbent intermediate layer is inserted between the fixed plate (1) and the supporting piece (11).

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