Insect screen

Abstract

The invention describes an insect screen device comprising a sliding insect screen door (2) which is slidably mounted on a support rail (10) via bearing elements (11, 12), a closing device (14) arranged on the support rail (10) for the insect screen door (2) for automatically moving the insect screen door (2) into a closed position, comprising a rotatable, spring-loaded winding roller (16) with a traction element (19) connected to the insect screen door (2) which can be wound onto and off it, a first damping device (20) arranged on the support rail (10) which dampens the movement of the insect screen door (2) moving against it into the closed position, a second damping device (21) arranged on the support rail (10) which dampens the movement of the insect screen door (2) moving against it into the open position, and a releasable locking device which locks the insect screen door (2) in the open position.

Description

[0001] The invention relates to an insect screen device comprising a sliding insect screen door which is slidably mounted on a support rail via bearing elements.

[0002] Insect screens are known in various designs. Besides a design with an insect screen door suspended in a door frame and pivoting only in one direction or continuously around a vertical pivot axis, a design is also known that features a sliding insect screen door. This insect screen door, typically consisting of a rectangular frame, usually made of aluminum profiles, into which an insect screen mesh is stretched, is guided by a lower and an upper rail. The insect screen door is usually mounted on the upper rail, which serves as a support rail, via corresponding bearing elements, either by rollers or by slidings. The insect screen door is guided linearly on the lower rail. Such a sliding insect screen door is usually moved manually between a closed and an open position.

[0003] The invention is based on the problem of providing an improved insect screen that is both very easy to use and very easy to install.

[0004] To solve the problem, the invention provides an insect screen device comprising a sliding insect screen door which is slidably mounted on a support rail via bearing elements, a closing device for the insect screen door arranged on the support rail for automatically moving the insect screen door into a closed position, comprising a rotatable, spring-loaded winding roller with a traction element connected to the insect screen door which can be wound onto and off it, a first damping device arranged on the support rail which dampens the movement of the insect screen door moving against it into the closed position, a second damping device arranged on the support rail which dampens the movement of the insect screen door moving against it into the open position, and a releasable locking device which locks the insect screen door in the open position.

[0005] The insect screen device according to the invention comprises, firstly, the typical elements of such a device, namely an upper support rail, and secondly, an insect screen door with a rectangular frame and insect screen fabric stretched therein, as well as bearing elements arranged thereon. These bearing elements are coupled to the support rail, and the insect screen door is mounted on them so as to be horizontally displaceable.

[0006] However, the invention further provides an automatic closing device, which is arranged on the support rail and serves to automatically close the insect screen door when it is not in the closed position. This means that the unlocked or unheld insect screen door is automatically moved into the closed position by means of this closing device. This closing device comprises a rotatable winding roller, spring-loaded by a coil spring such as a spiral spring, on which a traction element, for example a thread or a rope, is wound and from which the traction element can be unwound. The traction element is suitably connected to the insect screen door or the bearing element adjacent to the closing device; it is preferably concealed within the support rail. When the insect screen door is moved from the closed position towards the open position, the traction element is pulled and unwound from the winding roller.The coil spring is tensioned and builds up a restoring force which, when the insect screen door is released, automatically pulls it back into the closed position. This closing mechanism is located on the support rail.

[0007] A first damping device is also arranged on the support rail. This device serves to dampen the movement of the insect screen door as it moves towards the closed position. The automatic closing mechanism pulls the insect screen door into the closed position, which is defined by a stop or similar element. To prevent the insect screen door from hitting the stop too quickly or with too much force, a first damping device is installed upstream of the closing mechanism. The insect screen door, or the adjacent bearing element, moves against this damping device. As it approaches the damping device, the damping device begins to dampen the movement, i.e., to slow it down. This means that a counterforce, slightly smaller than the restoring force exerted by the coil spring, is applied to the damping device, resulting in an overall slowing down and a gradual approach to the closed position.This first damping device is also arranged on the support rail, preferably also inside it and thus concealed.

[0008] According to the invention, a second damping device with an associated or integrated locking device is provided, which is arranged on the opposite side of the support rail, i.e., also mounted on it and preferably located inside, i.e., concealed, within the support rail. This second damping device serves, on the one hand, to dampen the movement of the insect screen door into the open position, so that the insect screen door, which is manually pushed open against the restoring force of the coil spring, does not reach the stop defining the open position with excessive force and thus too quickly; rather, this movement is also dampened in a controlled manner. Here, too, the insect screen door, or rather the second bearing element, which is arranged adjacent to the second damping device on the insect screen door, can move against the second damping device.Immediately upon starting, this damping mechanism begins to oppose the sliding motion, thus providing resistance and damping the movement. The insect screen door then slowly slides or is pushed into the defined open position. A locking device, either associated with or integrated into the second damping mechanism and also located on or in the support rail, locks the insect screen door in the open position. This ensures that it remains open despite the restoring force exerted by the coil spring of the automatic closing mechanism. Only when the door is manually released from this lock by a user does the automatic closing mechanism engage and pull the insect screen door into the closed position, which, as described above, is dampened by the first damping mechanism.

[0009] As described, all three elements—namely, the automatic closing device, the first damping device, and the second damping device, including the locking device—are arranged on the support rail. The closing device is positioned at one end of the rail and is preferably integrated into the support rail or inserted into a lateral, rear recess. Adjacent to it, the first damping device is fixed to the support rail and is housed within the support rail, which preferably consists of a rectangular profile. At the other end of the support rail, the second damping device, which ultimately defines the closed position in conjunction with the locking device, is arranged. This second damping device, like the first, is also located within the support rail.All elements are not visible from the front, i.e., they are positioned in a hidden manner, which is beneficial to the appearance.

[0010] The support rail itself can be completely pre-assembled with all three elements: the closing mechanism, the first and second damping mechanisms. This means that none of these elements need to be attached separately to the support rail, which is to be mounted to a suitable supporting structure, at the installation site. During installation, it is therefore only necessary to mount a lower guide rail (if provided and not accessible), the support rail, and the pre-assembled insect screen door. This involves hooking the door into the lower guide rail at the bottom and then into the support rail at the top via the two bearing elements. Finally, the closing mechanism's pull cord or rope needs to be connected to the insect screen door or the adjacent bearing element, after which the entire insect screen system is installed. This means that the degree of prefabrication is extremely high.

[0011] Regarding the design of the first and second damping devices, various options are conceivable. According to one variant, the first damping device can be designed to actively and dampen the movement of the insect screen door coupled to it from a coupled position, in which the insect screen door is mechanically coupled to the damping device, to the closed position. The first damping device is therefore not designed as a simple stop damper, but rather as a damping device that establishes a mechanical coupling connection with the insect screen door, similar to a drive connection. From this coupled position, the damping device then actively and precisely moves the insect screen door to the closed position. This means that the movement is ultimately controlled solely by this active first damping device. This movement can be assisted by the restoring force exerted by the coil spring., that the coil spring provides one force component, while a second force component is provided by the first damping device, both of which work together against the actual damping mechanism.

[0012] As an alternative to such a quasi-active damping device, the first damping device can also be designed as a first spring or fluid damper with a first stop pin that can be inserted into a first housing against resistance, against which the insect screen door runs. The first damping device is thus a stop damper with a damping spring or fluid damping. The insect screen door, or rather the bearing element, runs against the stop pin, which is then pressed into the housing against a restoring force until the stop position, which can also be defined by the damping device or by a separate stop, is reached. The counterforce generated by the damping device is naturally somewhat smaller than the tensile force exerted by the coil spring, resulting in a reduced overall force that then slowly pulls the insect screen door into the closed position.

[0013] Regarding the design of the second damping device, two different variants are conceivable. According to the first variant, the second damping device can also be designed to actively and dampen the movement of the insect screen door coupled to it from a coupled position, in which the insect screen door is mechanically coupled to the damping device, to the open position. The design of the second damping device is thus the same as already described for the first damping device with respect to this variant. Here, too, a true mechanical coupling takes place between the insect screen door or the bearing element and the second damping device. As soon as this mechanical coupling is achieved, the second damping device actively moves the insect screen door, i.e., pulls it further towards the open position against the force of the coil spring until this position is reached. That is to say,The counterforce generated here is greater than the restoring force of the closing mechanism. This active movement, during which the user can release the insect screen door because the second damper mechanism takes over the movement into the closed position, is possible because, on the one hand, a mechanical drive connection is established, and on the other hand, the second damper mechanism is designed with such a force, acting in the direction of the open position, that it overcomes the restoring force of the closing mechanism. Here, too, the open position can be defined either by the second damper mechanism itself or by a separate stop. In the open position, the insect screen door is locked in any case.It cannot close automatically, but must first be actively moved from the open position by a user by gently pulling the insect screen door closed, which causes the locking mechanism to be released and the insect screen door to be freed so that the closing mechanism can pull it into the closed position.

[0014] Alternatively, the second damping device can also be designed as a second spring or fluid damper with a second stop pin that slides into a second housing, against which the insect screen door runs. This means that pure stop damping can also be provided on this side. The manually opened insect screen door, for example, again runs over the adjacent second bearing element against the stop pin, so that with sufficient pushing force, the stop pin is pressed into the housing, thus damping the movement. Once the open position is reached, which can again be defined by this stop damper or by a separate stop, the locking mechanism engages.

[0015] In this case, a separate locking mechanism in the form of a latching or clamping device is preferably provided, which engages the insect screen door in the open position. When the user manually pushes the insect screen door open, it first moves against the second damping device and, with further pushing, into the open position, where the locking mechanism then engages the insect screen door or the bearing element. For example, the locking mechanism can have a simple locking pin or hook that snaps into a suitable receptacle, such as on the bearing element, thus locking the door. If the user pulls more firmly on the insect screen door to close it, this locking connection is released, the locking pin or hook is pushed out of the receptacle, and the insect screen door is released.Alternatively, a suitable clamping device can also be used to achieve locking.

[0016] If a first damping device in the form of an active damper is used, the first damping device can comprise a first damping element, a first piston rod that is linearly movable between an extended and a retracted position and that operates against resistance when moving into the retracted position, a first coupling element that can be detachably coupled to the insect screen door, and a first spring element that pre-tensions the first piston rod into the retracted position. The coupling element establishes the connection to the insect screen door or the bearing element, and is arranged at the end of the piston rod, which is linearly displaceable within a cylinder. An extension mechanism, e.g., a spring, is provided in the cylinder, which pre-tensions the piston rod into the extended position.The piston rod itself is connected to a first spring element that pre-tensions the piston rod into the retracted position, such that the first spring element acts against the extension mechanism in the cylinder. When the sliding door is opened, with the insect screen door or the bearing element connected to the coupling element, the piston rod is moved from the retracted position to the extended position via this drive connection, assisted on the one hand by the extension mechanism, and on the other hand against the tensioned first spring element. Once the extended position is reached, the drive connection between the bearing element and the coupling element is released, and the coupling element is locked in a suitable manner so that the first damper assembly retains its position with the pre-tensioned first spring element.To close the door, the insect screen door is pulled shut by the closing mechanism and its bearing element moves against the coupling element, which is released from its locking position and engages with the bearing element to form the drive connection. The restoring force of the first spring element then acts, actively pushing the piston rod into the cylinder, thus actively moving the insect screen door into the closed position, a process which can be further assisted by the coil spring. Once the closed position is reached, the coupling connection remains engaged, ensuring a secure locking mechanism. This is because the coil spring remains pre-tensioned and exerts a restoring force against the stop, while the spring element can also continue to provide a holding force.The first spring element is preferably an elongated coil spring which is fixed in position at one end to a holder and coupled at the other end to, for example, the coupling element.

[0017] In this variant, the first spring element is preferably designed such that it compresses the first damper element towards the retracted position. This means that in the rest position, the piston rod is always pushed into the cylinder and can only be extended by applying a force. The compression force can be relatively small because, as explained, the insertion movement of the piston rod into the cylinder is also supported by the coil spring, which acts in the same direction as the first spring element.

[0018] A similar design can also be implemented for the second damping device. This, too, can comprise a second damping element, including a second piston rod that is linearly movable between an extended and a retracted position and operates against resistance when moving into the retracted position, with a second coupling element that can be detachably connected to the insect screen door, as well as a second spring element that pre-tensions the second piston rod into the retracted position. Thus, a comparable design is provided; only the directions of action are reversed, meaning that the second damping device is installed virtually rotated 180° relative to the first damping device.Here too, the second spring element, preferably an elongated coil spring which is fixed in position at one end and connected to the coupling element at the other end, is designed to bridge the resistance in the cylinder against which the piston rod is to be pushed into the cylinder.

[0019] In this design, the second spring element is preferably configured to force the closing mechanism towards the open position, thus locking the insect screen door in the open position via the second spring element. As described, the second spring element operates in the opposite direction to the tension of the coil spring. To actively move the insect screen door into the open position after the coupling or drive connection is established via the coupling element, the second spring element is designed to be sufficiently strong to exert a correspondingly high restoring force. When the insect screen door is moved from the open position towards the closed position, the piston rod is also pulled out of the cylinder due to the existing drive connection via the coupling element, thereby tensioning the second spring element, i.e., acting against it.The force required is not very great, as the coil spring acts in the same direction as the manual force applied by the user. Once the coupling position is reached, further movement releases the drive connection while simultaneously locking the coupling element, thus securing the second spring element in the tensioned position. After release, the sliding door is moved into the closed position by the closing mechanism.

[0020] Upon reopening, the bearing element again engages the coupling element, releasing it from the detent and establishing the coupling connection. The second spring element then pulls the coupled insect screen door back into the open position, where it automatically locks. This means that, in this design, the locking mechanism is ultimately integrated into the second damper assembly and implemented via the second spring element, which is sufficiently strong to hold the insect screen door in the open position and tension it against the stop. In other words, in this design, the second spring element overrides the closing mechanism towards the open position, thus locking the insect screen door in the open position. The second spring element therefore holds and locks the insect screen door in the open position.

[0021] In a further development of the invention, it can be provided that the first and / or the second coupling element is locked in the coupled position against a fixed first and / or second abutment, which also locks the first and / or second spring element in the tensioned state. The first and / or the second coupling element is released from the locking position by the insect screen door moving against it during closing and mechanically coupled to the insect screen door. This locking in the coupled position can be achieved, for example, by pivoting the coupling element to the piston rod and allowing it to pivot slightly when moved into the coupled position, so that locking pins provided on the coupling element can engage in suitable receptacles on a bracket that is part of the respective damper assembly. This pivoting automatically releases the drive connection to the bearing element.If the bearing element moves against the coupling element again, the latter is pivoted again, thereby releasing the locking mechanism and mechanically coupling the coupling element to the bearing element.

[0022] As described, preferably a first and a second bearing element are provided, wherein the first bearing element interacts with the first coupling element and / or the second bearing element interacts with the second coupling element. As explained above, only the first damping device, only the second damping device, or both damping devices can be designed as active damping devices with a cylinder, piston rod, spring element, coupling element, and bracket. Depending on the specific design, a corresponding operative connection is always established with the adjacent first or second bearing element, with the insect screen door typically guided on the support rail by two such bearing elements.

[0023] As explained, a simple stop damper can also be used instead of such an active damping device. It is preferable to provide a simple stop damper on the closing side, i.e., adjacent to the closing mechanism, against which the bearing element runs. Such a simple stop damper is sufficient on this side, since a force actively closing the insect screen door is exerted on it via the winding shaft.On the other side, i.e., the open position, an active second damping device is preferably provided, comprising a bracket, cylinder, piston rod, spring element and a coupling element, since this design, with appropriate design of the second spring element, automatically also provides an integrated locking mechanism, as the force directed towards the closed position via the second spring element is greater than the force exerted by the coil spring towards the open position.

[0024] The support rail itself is preferably a profile rail with a rectangular cross-section, two side walls, and a slotted lower wall that allows the bearing elements to engage. One or more guide sections for the bearing elements are provided on the lower wall. The support rail, typically an aluminum rail, is therefore rectangular in cross-section but has a slot on its underside through which the bearing elements, i.e., the rollers, can engage into the interior of the profile rail and run on corresponding guide sections.

[0025] Preferably, the first and second damping devices and the locking device are arranged inside the profile rail, with one side wall having a local recess into which the locking device is inserted, and the locking device being overlapped by the other side wall. This results in a correspondingly compact, enclosed design, and the support rail can be completely prefabricated. Preferably, the side wall with the recess is flush with a bottom wall of the locking device, so that a flat, flush finish is achieved between the side wall and the bottom wall of the locking device on this side of the profile rail.

[0026] Further advantages and details of the invention will become apparent from the exemplary embodiments described below and from the drawings. These show: Fig. 1 a schematic representation of an insect protection device according to the invention, Fig. 2 an enlarged partial view of the insect screen Fig. 1 in t partly on cutaway representation, Fig. 3 an enlarged partial view of area III from Fig. 2, Fig. 4 Fig. 4 an enlarged partial view similar Fig. 2 of a second embodiment, Fig. 5 an exploded view of an embodiment of a damping device for active damping, Fig. 6 the damping device Fig. 5 in the assembled state with the piston rod in a retracted position, Fig. 7 the damping device Fig. 6 with piston rod in the extended position, Fig. 8 a partial view of the insect screen Fig. 4 with insect screen door located just before the coupling position, and Fig. 9 the arrangement from Fig. 8 with insect screen door in the coupled position.

[0027] Fig. Figure 1 shows a schematic diagram of an insect screen device 1 according to the invention, comprising an insect screen door 2 consisting of a frame 3, which is made up of four profile rails 4, 5, which are arranged vertically, and 6, 7, which run horizontally and are pressed together with the profile rails 4, 5 via suitable corner connectors. In the example shown, the insect screen device 1 further comprises a guide rail 8 to be mounted on the floor, on which the insect screen door 2 is guided linearly by means of a form engagement, for example by an upwardly projecting strip of the guide rail 8 engaging in a receptacle of the profile rail 6. However, the guide rail is optional; a barrier-free version without such a guide rail is also conceivable. The lateral movement, i.e., starting from the in Fig. The movement of the insect screen door 2 from the closed position shown in Figure 1 to the left into the open position is limited by a stop 9. Furthermore, a support rail 10 is provided on which the insect screen door 2 is mounted via bearing elements 11, 12, which will be described in more detail below. The bearing elements 11, 12 are preferably roller bearing elements, meaning that the insect screen door 1 is guided by rollers.

[0028] Fig. Figure 2 shows an enlarged view of the insect screen 1. Fig. 1, where the upper part of the insect screen door 2 and the support rail 10 are shown, which, however, is shown here broken off or somewhat shortened for illustrative purposes. Shown are the two bearing elements 11, 12, which engage in the support rail 10, open at the bottom. Each bearing element 11, 12 has two rollers which run on corresponding guide sections 13 on both sides in the form of running surfaces, only one of which is in Fig. 2 is shown, run.

[0029] Furthermore, an automatic locking device 14 is provided, which is also arranged on the support rail 10. The support rail 10 is located on the rear side ( Fig. Figure 2 shows the front of the insect screen 1) open, so that the locking device 14 can be inserted into the resulting recess and is fully integrated into the support rail 10. It does not protrude from the rear either, but rather is flush with the rear wall 15 of the support rail 10, either with a back panel or bottom panel. The locking device 14 is described in more detail below. Fig. 3, comprises a winding shaft 16 which is spring-loaded by a coil spring (not shown in detail). The coil spring is arranged with its inner end on a fixed support 17, and with its outer end it is suspended on the winding shaft 16, the winding shaft 16 being rotatably mounted about a pivot 18 which forms an axis of rotation and simultaneously serves as the support 17. A tension element 19 is wound on the winding shaft 16, which, see Fig. 3, is connected to the adjacent bearing element 12. The spiral spring, not shown in detail, permanently tensions the winding shaft 16 in the winding direction, i.e., a tensile force is permanently exerted on the bearing element 12 and thus on the insect screen door 2, which moves the insect screen door 2 into the closed position, as shown in Fig. As shown in 1, it pulls. So, if the insect screen door 2 is in an open position, in which it can be seen from, for example, the Fig. The insect screen door 2 is to be manually pushed to the left by the user in the position shown in arrow P1, and is released in this position, the closing device 14 automatically pulls the insect screen door 2 back into the position shown in the image. Fig. 1 shown closed position, since the tensioned spiral spring rotates the winding shaft 16 counterclockwise via its restoring force, so that the pulling element 19, for example a thread or a thin rope, is wound up and the bearing element 12 and with it the insect screen door 2 is pulled in the direction of arrow P2.

[0030] To prevent this movement into the stop-limited closing position from occurring completely unbraked all the way to the stop, see Fig. 2 A first damping device 20 is provided, which dampens the movement into the closed position. The first damping device 20 is arranged inside the support rail 10, i.e., concealed. It interacts with the bearing element 12, which, as described below, moves against it, whereby the first damping device 20 builds up a corresponding damping resistance to the movement or opposes the movement effected by the closing device 14, so that the movement is slowed down and dampened and the insect screen door 2 can be moved slowly into the closed position.

[0031] Furthermore, a second damping device 21 is provided, which is concealed inside on the other side of the support rail 10. This second damping device 21 dampens the movement into the open position. The insect screen door 2 is manually pushed open by the user as described, i.e., starting from Fig. The insect screen door 2 is pushed to the left. To prevent it from running undamped against stop 9, a second damping device 21 is provided. This also interacts with a bearing element, namely bearing element 11, which, as will be discussed below, forms a mechanical drive connection with the second damping device. This drive connection then moves the insect screen door 2, via this damping and controlled connection, into the open position and into contact with stop 9.

[0032] Both the automatic closing device 14 and the first damping device 20 and the second damping device 21 are prefabricated at the factory and arranged on or integrated into the support rail 10. Therefore, no assembly work is required in this regard; at most, after on-site installation, a positional adjustment of the rail position of the first and / or second damping device 20, 21 may be necessary to adapt the system to the structural conditions.

[0033] The first damping device 20 can be, as the Fig. 2 and Fig. Figure 3 shows a first spring or fluid damper 22. This has a housing 23 in which a damper spring or damper fluid is received. A stop pin 24 is provided, which projects axially from the housing 23 and against which, see Fig. 3, the bearing element 12 runs when it is pulled in the closing direction via the automatic closing device 14, i.e. in the direction of arrow P2 in Fig. 3. The bearing element 12 runs against the stop pin 24, which can be inserted into the housing 23, but against the resistance of the damper spring or damper fluid. This means that a closing movement still occurs, effected by the coil spring of the locking device 14, but it is slowed down and damped because the damper spring or damper fluid must be compressed. The design can be such that the stop limitation is achieved either by the damper device 20, i.e., by the spring or fluid damper 22, or by a corresponding mechanical stop. In any case, from the moment the bearing element 12 makes contact with the stop pin 24, the movement is slowed down and thus damped until it reaches the stop.

[0034] Fig. Figure 4 shows a schematic representation of an embodiment in which the first damping device 20, as well as the second damping device 22, which is not shown in detail here but is identical in construction, is designed as an active damped movement damping device which, on the one hand, enters into a mechanical coupling connection between a coupling element of the damping device 20 and the bearing element 12 in the case of the first damping device or the bearing element 11 in the case of the second damping device 21, and, on the other hand, actively controls the further movement with the entry of this coupling connection.

[0035] Fig. Figure 5 shows a schematic diagram of such a first or second damping device 20, 21 in the form of an exploded view. Both first and second damping devices in 20, 21 are virtually identical in construction; however, they are mounted in reverse because the respective directions of movement with which the actively controlled movement is to occur are opposite. The first damping device 20 with its "first" components is described below. The second damping device is identical in construction, meaning that all the described "first" components are provided as "second" components in the second damping device. The second damping device couples with the bearing element 11.

[0036] The first damping device 20 has a first support component 25, which can also be referred to as a bracket, by means of which it is mounted on the support rail 10. The first support component 25 is elongated and hollow. Furthermore, a first damping element is provided with a first cylinder 26 having an integrated spring and a first piston rod 27, which is coupled to the spring (not shown in detail), the spring being designed to permanently push the first piston rod 27 out of the first housing 26. A first coupling element 28 is arranged on the first piston rod 27, which serves to effect the mechanical drive connection with the bearing element 12. The first coupling element 28 has a first coupling section 29, which, in the coupled position, resembles a hook or a recess (see figure). Fig. 4 or following Fig. 9, the bearing element 12 overlaps. The first coupling element 28 is pivotably arranged on the first piston rod 27 about a first pivot axis 30. It can therefore pivot upwards and downwards about a horizontal axis. The first coupling element 28 can be locked in an upwardly pivoted position by means of first locking pins 31, so that the drive connection is released when opening. When closing, the drive connection is re-established, whereby the first locking pins 31 are released again. The first locking pins 31 engage corresponding first locking sections 32 on the first support component 25 for locking.

[0037] Furthermore, a first spring element 33 is provided, which is designed as an elongated coil spring and is attached to a bracket 35 in the form of a constriction on the first support component 25 by means of a fastening section 34, and is attached to a further bracket 37 on the first coupling element 28 by means of a further fastening section 36. Both the first cylinder 26 and the first spring element 33 are received inside the first support component 25 in the assembly position, which Fig. Figure 6 clearly shows this. In this position, the first damper assembly 20 is in the closed position. The design of the first spring element 33 is such that it exerts a stronger tensile force on the first coupling element 28 and, via this, on the first piston rod 27 in the closing direction, i.e., towards the retracted position, than the spring located in the first cylinder 6 and 20. This means that the first spring element 33 works against the damper element with the piston rod 27, and the piston rod 27 is permanently retracted. Since the Fig. Figure 6 shows the coupled position, in which the first coupling element 28 is coupled to the bearing element 12. Consequently, when the insect screen door 2 is moved from the closed position, the first coupling element 28 is inevitably moved along via the drive connection of the bearing element 12 to the first coupling element 28. This causes the first piston rod 27 to be pulled out of the first housing 26, and the first spring element 33 to be stretched and tensioned, thus generating a restoring force. This sliding movement continues until the release position is reached, which, in the reverse case, is ultimately identical to the coupled position. In the release position, the first coupling element 28 runs against a cam guide or similar mechanism.This causes the first locking pins 31 to engage in the first locking sections 32, which form an abutment, and the first coupling element 28 to pivot slightly upwards, thereby releasing the bearing element 12. As a result of the locking action, the first damper assembly 20 remains in this position; that is, the first spring element 33 remains pre-tensioned, and the first piston rod 27 remains extended. When the bearing element 12 now moves against the first coupling element 28 at a corresponding starting section 37 via the locking device 14 during automatic closing, the locking action is released, the first coupling element 28 pivots downwards and engages the bearing element 12, thus achieving the coupled position.Upon release of the locking mechanism, the first spring element 33 simultaneously and actively pulls the first piston rod 27 slowly back into the first cylinder 26. This insertion movement is assisted by the coil spring of the locking device 14, as it pulls in the same direction. However, this closing movement is dampened by the spring located in the first cylinder 26, which acts in the opposite direction to the movement.

[0038] The closing process and its respective function are described in the Fig. 8 and Fig. 9 shown. Fig. In Figure 8, the insect screen door 2, as illustrated by Case P2, is pulled into the closed position by the automatic closing device 14. The bearing element 12 is still slightly spaced from the first damper device 20 or the first coupling element 28. The first coupling element 28 is still in the upward-pivoted position. With further movement, the bearing element 12 runs against the first coupling element 28, which is released, i.e., the locking mechanism is released, and the insect screen door 2 is moved into the closed position in a damped manner, controlled by the first damper device 20 in conjunction with the closing device 14.

[0039] The function of the structurally identical second damper assembly 21 is ultimately the same. It also has a second support component, a second cylinder, a second piston rod, a second coupling element, and a second spring element, but it is arranged in the opposite direction. When the insect screen door 2 is manually moved into the open position, the insect screen door 2 is pushed in the direction of arrow P1. When pushed open far enough, the adjacent bearing element 11 runs against the second coupling element, which is then pivoted and engages with the bearing element 11. This also releases the locking mechanism, and the tensioned second spring element moves the second piston rod and with it the second coupling element, thus necessarily pushing the insect screen door 2 further to the left (starting from the Fig.1) pulls into the open position until it stops. Only the design of the second spring element differs slightly from that of the first spring element, since the second spring element must also overcome the tensile force of the coil spring of the locking device 14 acting in the opposite direction. That is, the second spring element is designed to be slightly stronger than the first spring element 33.

[0040] In the open position, the insect screen door 2 is locked. This is achieved via the second damper device 21, which in this case is multifunctional. The second spring element exerts a constant tensile force on the insect screen door 2, thus holding it in the open position, since, as described, the second spring element overcomes the restoring force of the coil spring of the closing device 14. The second damper device 21 is therefore also designed as a locking device, or rather, has such an integrated locking device. To close, the insect screen door 2 simply needs to be pushed in the direction of arrow P2. This causes the second spring element to extend again, i.e., be compressed, and the second piston rod, along with the second coupling element, is extended again until the second coupling element reaches the release position, at which point the drive connection is disengaged.Then the insect screen door 2, which can no longer be held open, is automatically closed again via the automatic closing device 14 until this movement is dampened again via the first damping device 20.

[0041] The second damping device 21 is preferably designed in the form described above, i.e., it has the active drive function and creates the drive connection via the second coupling element. The first damping element 20 can also be designed as described. However, the first damping element 20 can also be a simple stop damper in the form of a spring or fluid damper, as already described above. This is because active drive is not absolutely necessary on this side, i.e., the closing side, since a corresponding pulling force, which leads to closing and moving into the closed position, is provided via the closing mechanism 14.

[0042] However, the second locking device 21 does not necessarily have to be an active locking device as described above. Instead, a stop damper in the form of a spring or fluid damper, as described above, can also be provided there. In such a case, however, an additional, separate locking device must be provided on the support rail 10, which locks the insect screen door 2 when the stop-limited open position is reached. This locking device can, for example, be a simple latching device, i.e., a locking pin or latching hook that engages in a corresponding latching receptacle of the insect screen door 2 when the open position is reached. When closing, i.e., when the insect screen door 2 is manually pulled, this latching connection is released, after which the insect screen door 2 can be closed automatically. A clamping connection is also conceivable instead of a latching connection.

Claims

[1] Insect screen device comprising a sliding insect screen door (2) which is slidably mounted on a support rail (10) via bearing elements (11, 12), a closing device (14) arranged on the support rail (10) for the insect screen door (2) for automatically moving the insect screen door (2) into a closed position, comprising a rotatable, spring-loaded winding roller (16) with a traction element (19) connected to the insect screen door (2) which can be wound onto and off it, a first damping device (20) arranged on the support rail (10) which dampens the movement of the insect screen door (2) moving against it into the closed position, a second damping device (21) arranged on the support rail (10) which dampens the movement of the insect screen door (2) moving against it into the open position, and a releasable locking device which locks the insect screen door (2) in the open position. [2] Insect screen device according to claim 1,characterized by , that the first damping device (20) is designed for the active damped movement of the insect screen door (2) coupled to the first damping device (20) from a coupling position in which the insect screen door (2) is mechanically coupled to the first damping device (20) into the closed position. [3] Insect screen device according to claim 1, characterized by , that the first damping device (20) is a first spring or fluid damper (22) with a first stop pin (24) which can be inserted into a first housing (23) against a resistance and against which the insect screen door (2) runs. [4] Insect screen door according to any of the preceding claims, characterized by, that the second damping device (21) is designed for the active damped movement of the insect screen door (2) coupled to the second damping device (21) from a coupling position in which the insect screen door mechanically couples with the second damping device (21) to the open position. [5] Insect screen device according to any one of claims 1 to 3, characterized by , that the second damping device (21) is a second spring or fluid damper with a second stop pin that can be inserted into a second housing, against which the insect screen door runs. [6] Insect screen device according to claim 5, characterized by , that a separate locking device in the form of a latching or clamping device is provided, which enters into a latching or clamping connection with the insect screen door (2) in the open position. [7] Insect protection device according to claim 2, or any one of claims 4 to 6 except claim 3, characterized by, that the first damping device (20) comprises a first damping element, a first piston rod (27) which is linearly movable between an extended and a retracted position and which operates against a resistance when moving into the retracted position, with a first coupling element (28) which can be detachably coupled to the insect screen door (2), and a first spring element (33) which preloads the first piston rod (27) into the retracted position. [8] Insect screen device according to claim 7, characterized by , that the first spring element (33) is designed such that it over-presses the first damping element in the direction of the retracted position. [9] Insect screen device according to claim 4, or claim 7 or 8 excluding claim 5, characterized by, that the second damping device (21) comprises a second damping element, a second piston rod which is linearly movable between an extended and a retracted position and which operates against a resistance when moving into the retracted position, with a second coupling element which can be detachably coupled to the insect screen door (2), and a second spring element which preloads the second piston rod into the retracted position. [10] Insect screen device according to claim 9, characterized by , that the second spring element is designed in such a way that it overrides the closing device in the direction of the open position, such that the insect screen door (2) is locked in the open position via the second spring element. [11] Insect screen device according to claim 7 or 8, or claim 9 or 10, characterized by, that the first and / or the second coupling element (28) is locked in the coupling position on a position-fixed first and / or second abutment, whereby the first and / or the second spring element (33) is also locked in a tensioned state, wherein the first and / or the second coupling element (28) is released from the locking position by means of the insect screen door (2) which runs against it when closing and is mechanically coupled to the insect screen door (2). [12] Insect protection device according to any one of claims 7 to 11, characterized by , that a first and a second bearing element (11, 12) is provided, wherein the first bearing element (12) interacts with the first coupling element (28) and / or the second bearing element (11) interacts with the second coupling element. [13] Insect protection device according to one of the preceding claims, characterized by, that the support rail (10) is a profile rail having a rectangular cross-section with two side walls and a slotted lower wall allowing engagement of the bearing elements (11, 12), on which one or more guide sections for the bearing elements (11, 12) are provided. [14] Insect screen device according to claim 13, characterized by , that the first and second damping devices (20, 21) and the optionally provided separate locking device are arranged inside the profile rail, and that one side wall has a local recess into which the locking device (14) is inserted, the locking device (14) being overlapped by the other side wall. [15] Insect screen device according to claim 14, characterized by , that the side wall having the recess is flush with a bottom wall of the closing device (14).

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