DE202023107630U1 - Protective grille, especially insect protection door or window - Google Patents

Abstract

Protective grille (1, 2), with a support frame (5, 5') assembled or mountable from profile strips (3, 3a, 3b) and profile connectors (4) for a mesh fabric (6) that can be clamped therein, and with at least one torsion bar spring (7, 7') with a first spring end (71) fixed in the support frame (5, 5') and with a second spring end (72) protruding from the support frame (5, 5'),
- wherein the torsion bar spring (7, 7') has two mutually parallel spring legs (73, 74) which are connected to one another at the leg ends (75, 76) facing away from the two spring ends (71, 72),
- wherein the spring legs (73, 74) are seated in a first profile chamber (31, 31a, 31b, 32, 32a, 32b) of one of the profile strips (3, 3a, 3b), and
- wherein the two spring ends (71, 72) are guided in the profile connector (4) connected to this profile strip (3, 3a, 3b), the first spring end (71) being seated in a form-fitting manner in this profile connector (4), and the second Spring end (72) emerges from this profile connector (4).

Description

The invention relates to a protective grille, in particular an insect protection door or window, with a support frame assembled or mountable from profile strips and profile connectors for a mesh fabric that can be clamped therein, and with a torsion bar spring arranged at least partially in the support frame. The invention further relates to a torsion bar spring for such a protective grille.

Such a protective grille is intended and set up to close a building opening, such as a window opening or the exit to a terrace or balcony, on the outside in order to prevent insects or other small animals from entering the building. The protective grille usually includes profiles that form a usually rectangular profile or support frame using profile connectors (corner, T and/or longitudinal connectors). The open space of the frame is covered with close-meshed grids or nets so that light can penetrate but insects or pollen are prevented from entering the building.

The rotational mobility of an insect screen revolving door is achieved by means of a hinge arrangement with usually two hinges arranged at a distance from one another. To hold the revolving insect screen door in the closed position, it is known to provide the revolving insect screen door on the side facing the building opening with a permanent magnet, which comes into contact with a metal plate attached to the building or the door frame. The insect screen revolving door can therefore only be opened after the magnetic force acting between the magnet and the metal plate has been overcome.

The DE 100 34 071 B4 In this context, proposes a helical torsion spring as a restoring device, so that automatic closing is possible as a result of the spring being preloaded when opening.

From the DE 20 2006 007 537 U1 For a plug-in frame system for producing a fly protection window, a fastening device consisting of a spring wire is known, which is often bent in such a way that it sits in a profile connector with several bending sections, while the also bent spring ends emerge from the profile connector in the area of the profile connector in order to provide a releasable clamp fastening of the To enable a plug-in frame system on a building window.

The invention is based on the object of providing a particularly suitable, time-saving and easy-to-install protective grille, in particular an insect protection door or window.

This object is generally achieved with regard to the protective grille by the features of claim 1 and with regard to an insect protection door preferably by the features of claim 15 and with regard to an insect protection window preferably by the features of claim 16 and with regard to a torsion bar spring by the features of claim 17 according to the invention. Advantageous refinements, variants and further developments are the subject of the subclaims.

The advantages and refinements mentioned with regard to the protective grille can also be applied analogously to the insect protection door and/or the insect protection window and/or the torsion bar spring and/or the assembly tool and vice versa.

The conjunction “and/or” is to be understood here and below in such a way that the features linked by this conjunction can be formed both together and as alternatives to one another.

The protective grille according to the invention comprises a support frame (system frame, profile frame) that is assembled or can be assembled from profile strips and profile connectors (corner connectors) for a mesh fabric that can be clamped or stretched therein.

The grid or protective fabric is preferably impermeable to insects and/or particles and/or pollen. The mesh is, for example, a particle protection grille, for example a pollen protection and/or dust protection and/or soot protection and/or insect protection grille, or a sun protection fabric, for example a sun protection grille to reduce heat and sun rays. The mesh is preferably a combined pollen, dust, soot and insect protection grille or a combined sun and insect protection grille.

The profile strips are designed, for example, as hollow profiles that are open on the front side, and are mounted to the support frame according to their installation situation as two longitudinal profiles extending in the vertical direction (vertical profile) and two transverse profiles extending in the horizontal direction (horizontal profile).

The hollow profile-like profile strips are, for example, metal profiles that can be cut to length, in particular made of aluminum. Their cross section is preferably essentially rectangular, although square designs are also conceivable. The front of the profile strips is essentially smooth, creating a visually attractive frame system given is. The front can, for example, also have a convex bend towards the outside of the frame, so that a visually appealing transition to a surrounding building wall is possible.

However, an additional or further aspect of the invention provides that the profile strips, i.e. the cross strut and the longitudinal profiles as well as the cross profiles, are designed as telescopic profiles. This means that the profile strips each have an outer profile (outer profile strip) and at least one inner profile (inner profile strip) which is telescopically inserted or can be inserted therein. For example, two inner profiles can also be inserted on the opposite end faces of the outer profile. The adaptation to different building opening dimensions is not done by cutting the profile strips to length, but by varying the insertion or insertion depth of the inner profiles in the outer profile.

The protective grille also has at least one torsion bar spring with a first spring end fixed in the support frame and with a second spring end protruding from the support frame. The torsion bar spring has two mutually parallel spring legs which are connected to one another at the leg ends facing away from the two spring ends. The spring legs sit in a first profile chamber of one of the profile strips.

In the assembled state, the second spring end extends at least in sections transversely to the longitudinal direction of the spring leg. By means of torsion bar springs, preferably provided in at least two frame corners, the protective grille can be clamped non-destructively and in particular without drilling into an opening frame (window or door frame) of a building opening, for example a rebate frame.

The torsion bar spring is in particular a spring wire that is bent to form the two spring legs and the two spring ends in such a way that the two spring legs run parallel to one another with as little distance as possible. The distance between the two spring legs is preferably smaller or equal to the chamber width of the profile chamber in which the spring legs are seated.

The two spring ends are guided into the profile connector connected to this profile strip, the first spring end being seated in a form-fitting manner in this profile connector, and the second spring end emerging from this profile connector.

The or each profile strip preferably has, in addition to the first profile chamber accommodating the spring legs of the torsion bar spring, a middle second profile chamber accommodating a joint leg of the profile connector, an inner third profile chamber for receiving a holding element for the mesh fabric.

In a particularly expedient embodiment, the profile connector has a first channel that is aligned with the first profile chamber of the profile strip that accommodates the spring legs and a second channel that runs transversely thereto and in which the first spring end is seated in a form-fitting manner. The second channel which accommodates the first spring end is expediently circumferential over at least part of its channel length, in particular at the end of the first spring end, i.e. H. closed in cross section. In addition, the profile connector has an opening on the front side which is aligned with the first profile chamber of the profile strip and through which the second spring end of the torsion bar spring emerges from the profile connector.

In a suitable development, the profile connector has a first joining leg received by the first profile chamber of the profile strips and a second joining leg perpendicular thereto, the first channel being arranged to run parallel to the first joining leg and the second channel running transversely to the second joining leg. In particular, the second channel of the profile connector opens out of its first channel at a right angle. It is particularly expedient that the first channel of the profile connector guides an end section of the two spring legs, the end section of the corresponding spring leg assigned to the first spring end being shorter than the end section of the second spring leg assigned to the second spring end.

In an advantageous embodiment it is provided that the two spring ends of the torsion bar spring extend horizontally, preferably in opposite directions, with respect to the vertically extending spring leg sections of the torsion bar spring. The second horizontal spring end emerging from the profile connector projects vertically beyond the first horizontal spring end seated in this profile connector.

In a particularly preferred embodiment, the spring leg of the second spring element has a support crank, by means of which the torsion bar spring is supported or can be supported on an edge. The support crank is designed as a step-like or approximately S-shaped offset, the offset being supported in sections on an edge in the assembled state, in particular supported vertically.

Preferably, the support crank is arranged outside the support frame and supports in the assembled state on the opening frame or on a rebate frame, and thus prevents the protective grille in the assembled state from slipping down on the opening frame over time. This prevents a gap from forming between the protective grille and the opening frame when installed.

In a conceivable development, the second spring end has a free-end retaining lug for reaching behind an opening or folding frame, the retaining lug being bent or cranked with respect to the second spring end. In particular, the retaining lug is bent/cranked in the direction of the support frame. In other words, the retaining lug has a slight bend, so that the second spring end protrudes away from the opening frame in the assembled state. This makes the second spring end easier for a user to grasp. A gripping bend (grip crank, gripping aid) is thus realized for easy gripping of the second spring end, so that assembly and/or disassembly on the opening frame is simplified.

In one possible embodiment, the profile connector is designed in two parts with two profile connector parts. For example, in a telescopic design of the profile strips, an inner profile connector part and an outer profile connector part are provided as joining legs, the inner profile connector part being insertable into an inner profile and the outer profile connector part being insertable into an outer profile. The profile connector parts can be joined together in a form-fitting and/or force-fitting manner.

For example, a two-part profile connector is used, as described in the European application EP 3 940 187 A1 is described by the applicant. Their disclosure content, in particular their claims (with associated explanations), are hereby expressly incorporated into the present application. Reference is specifically made to claims 1 and 13 to 15 with the associated statements specifically in paragraphs [0009] and [0010], paragraphs [0022] and [0023], and the figurative representation of the 2 to 4 . Here, the profile connector parts are referred to as joining legs and can be locked/clipped together in a form-fitting and/or non-positive manner via joining contours.

With regard to the insect protection door, it comprises at least two hinges held on a support frame formed from profile strips and profile connectors and a torsion bar spring with two spring legs that are parallel to one another and each have a spring end at the end. These spring legs, which are seated in a profile chamber of one of the profile strips, preferably directly adjacent to one another, are connected to one another at the leg ends facing away from the two spring ends. The spring legs are guided into the profile connector connected to this profile strip, the first spring end being seated in a form-fitting manner in this profile connector, while the second spring end emerges from this profile connector.

With regard to the insect protection window with a support frame formed from four profile strips and four profile connectors, at least two torsion bar springs are provided, each with two spring legs that are parallel to one another and each have a spring end at the end, which are connected to one another at the leg ends facing away from the two spring ends and are seated in a profile chamber of one of the profile strips . The spring legs can be slightly spaced apart. The spring legs are guided into the profile connector connected to the profile strip, the first spring end being seated in a form-fitting manner in this profile connector (4), while the second spring end emerges from this profile connector.

The torsion bar springs, which in turn are bent from a spring wire, are preferably bent at the loop-shaped connection point of the two spring legs, i.e. H. bent in such a shape that this connecting end, which is common to the two spring legs, is sufficiently supported within the profile chamber in order to prevent twisting of the other spring leg as well during a pivoting movement of the spring end led out of the support frame and an associated twisting of the spring leg assigned to this spring end.

The torsion bar spring according to the invention is intended for a protective grille, in particular for a protective grille described above, for example for an insect protection window or an insect protection door, and is suitable and set up for this purpose. The torsion bar spring has a first spring end and a second spring end as well as two mutually parallel spring legs. The spring legs are connected to one another at their leg ends facing away from the two spring ends. The spring leg of the second spring end has a support crank, by means of which the torsion bar spring can be supported on an edge, in particular on an opening or rebate frame of a building opening, on which the protective grille is mounted or can be mounted.

• 1 in Vorderansicht ein Rahmensystem einer Partikelschutztür mit vertikalen und horizontalen Profilleisten sowie diese verbindenden Profilverbindern gemäß einer ersten Variante,
• 2 das Rahmensystem gemäß 1 in Rückansicht,
• 3 einen Ausschnitt aus 2 in größerem Massstab mit einem zwei Profilleisten verbindenden Profilverbinder und darin geführten Federabschnitten einer zweischenkligen Drehstabfeder,
• 4 eine Darstellung gemäß 3 ohne Profilleisten,
• 5 eine perspektivische Darstellung des Profilverbinders und der Drehstabfeder gemäß 5,
• 6 in perspektivischer Stirnansicht die Profilleiste mit drei Profilkammern, in deren äußerer Profilkammer die zwei parallelen Federschenkel der Drehstabfeder einsitzen,
• 7 in Rückansicht eine Rahmenecke eines Insektenschutzfensters mit zwei mittels eines Profilverbinders verbundenen Profilleisten inklusive zweischenkliger Drehstabfeder,
• 8 in einer Darstellung gemäß 7 den Profilverbinder und die Drehstabfeder ohne Profilleisten,
• 9 eine perspektivische Darstellung des Profilverbinders und der Drehstabfeder gemäß 8,
• 10 eine andere perspektivische Darstellung des Profilverbinders und der Drehstabfeder gemäß 8,
• 11 ein Vorderansicht eine dritte Ausführungsform des Rahmensystems als Teleskoprahmen,
• 12 in perspektivischer Stirnansicht ein Außenprofil,
• 13 in perspektivischer Stirnansicht ein Innenprofil,
• 14 in perspektivischer Stirnansicht eine Adapterleiste für eine Befestigung eines Gittergewebes an dem Außenprofil,
• 15 in perspektivischer Ansicht eine Adapterleiste für eine Befestigung einer Dichtungsbürste an dem Außenprofil,
• 16 in perspektivischer Ansicht eine zweite Ausführungsform der Drehstabfeder,
• 17 in Frontansicht die Drehstabfeder gemäß 16, und
• 18 in Draufsicht mit Blick auf eine Unterseite die Drehstabfeder gemäß 16.

Exemplary embodiments of the invention are explained in more detail below with reference to a drawing. Show in it:

• 1 in front view a frame system of a particle protection door with vertical and horizontal Profile strips and profile connectors connecting them according to a first variant,
• 2 the frame system accordingly 1 in rear view,
• 3 a section 2 on a larger scale with a profile connector connecting two profile strips and spring sections of a two-leg torsion bar spring guided therein,
• 4 a representation according to 3 without profile strips,
• 5 a perspective view of the profile connector and the torsion bar spring 5 ,
• 6 a perspective front view of the profile strip with three profile chambers, in the outer profile chamber of which the two parallel spring legs of the torsion bar spring are located,
• 7 in rear view a frame corner of an insect protection window with two profile strips connected by means of a profile connector including a two-leg torsion bar spring,
• 8th in a representation according to 7 the profile connector and the torsion bar spring without profile strips,
• 9 a perspective view of the profile connector and the torsion bar spring 8th ,
• 10 another perspective view of the profile connector and the torsion bar spring according to 8th ,
• 11 a front view of a third embodiment of the frame system as a telescopic frame,
• 12 in a perspective front view an external profile,
• 13 in a perspective front view an internal profile,
• 14 in a perspective front view an adapter strip for attaching a mesh to the outer profile,
• 15 in a perspective view an adapter strip for attaching a sealing brush to the outer profile,
• 16 in a perspective view a second embodiment of the torsion bar spring,
• 17 in front view the torsion bar spring according to 16 , and
• 18 in plan view with a view of an underside the torsion bar spring according to 16 .

Corresponding parts are provided with the same reference numbers in all figures.

The 1 and 2 show a front view or rear view of a protective grille 1 mounted as a particle or insect protection door made of vertical profile strips 3, hereinafter also referred to as longitudinal profiles, and horizontal profile strips 3, hereinafter also referred to as transverse profiles, which profile strips 3 in frame corner areas by means of profile connectors 4 to form a support frame or Frame system 5 are connected to each other. Grid fabric 6 is clamped into the frame system 5 and is attached to the profile strips 3 in a manner not shown by means of piping strips.

As well as from the 3 to 5 As can be seen, the particle protection grille 1 mounted as an insect protection door has a torsion bar spring 7 with two spring legs 73, 74 which run parallel to one another in the longitudinal direction L of the profile and in this exemplary embodiment practically without a gap, the respective spring ends 71, 72 of which are bent out in an L-shape or a U-shape. The L-shaped spring end 71 lies, for example, in the profile connector 4 on the top of the door or frame and there in a receiving chamber or a (second) channel 43. The U-shaped spring end 72 is led out of the profile connector 4 via a through opening 44. The torsion bar spring 7 consists of a spring wire bent in a loop or U-shape to form spring legs 73, 74 that run parallel to one another with virtually no gap, so that its pivot ends 75, 76 facing away from the spring ends 71, 72 are connected to one another.

A receiving chamber or a (first) channel 42 introduced into one of the insertion or joining legs 45 of the profile connector 4 opens into the channel 43 on the one hand and into the through opening 44 and takes a leg or end section 77 adjoining the spring ends 71, 72, 78 of the two spring legs 73, 74 of the torsion bar spring 7. A tread plate 8 is inserted into the support frame 5 on the bottom side.

As in connection with 6 As can be seen, the torsion bar spring 7 with its spring legs 73, 74, which are made of a spring wire and are bent in a loop and thus a U-shape, running parallel and practically without a gap, lies in an (outer) profile or receiving chamber 31 of the profile strips 3 connected by means of the profile connector 4 which the frame system 5 of the insect screen door 1 is hinged to a door frame, not shown, by means of hinges, not shown. There the torsion bar spring 7 rests with its U-shaped spring end 72 on the door reveal or on the door frame. In the course of a pivoting movement of the insect protection door 1 or its frame mensystems 5, the torsion bar spring 7 is pretensioned as a result of a torsion of one or both spring legs 73, 74, so that the insect protection door 1 automatically pivots into the closed position as a result of the resulting restoring force. During the pivoting movement of the frame system 5 of the insect screen door 1, the torsion bar spring 7 is supported with its spring end 71 inserted in the profile connector 4 in the profile connector 4 and thus on the frame system 2. The spring force of the torsion bar spring 7 can be adjusted by its material, in particular spring steel, its length and its leg thickness.

The profile connector 4 with its respective joining legs 41 sits in a further, middle profile chamber 32 of the profile strip 3. A third, inner profile chamber 33 of the profile strips 3 serves to accommodate the piping strip, which in turn serves to fasten the mesh 6 to the frame system or support frame 5.

7 again shows a frame corner of a protective grille 2, which is preferably mounted here as an insect protection window, with two profile strips 3 connected by means of a profile connector 4. There, their middle profile chambers 32 serve as joining chambers for the joining legs 41 of the profile connector 4. In this embodiment, the torsion bar spring 7 sits with its spring legs 73, 74 in this middle profile chamber 32. The two spring legs 73, 74 in turn run at least approximately parallel and are only slightly spaced from one another in order to enable reliable insertion into the middle profile chamber 32.

In the area of the leg ends 75, 76, the spring wire, which is again bent in a loop shape and forms the torsion bar spring 7, is bent or bent. In other words, the connecting section between the two leg ends 75, 76 of the torsion bar spring 7 is shaped in such a way that the torsion bar spring 7 is suitably supported in the profile chamber 32 with its leg ends 75, 76, so that during a pivoting movement of the second spring end protruding from the support frame 5 72, although the spring leg 73 having this can twist, the further (first) spring leg 74 of the torsion bar spring 7 cannot.

The profile connector 4 has recesses 74 in diagonally opposite corner regions on its joining legs 41 corresponding to the middle profile chamber 2, in which the spring legs 73, 74 sit over part of their length. As a result of a certain spreading of the two spring legs 73, 74, they sit with a clamping force in the recesses 47 of the corresponding joining leg 41 of the profile connector 4, so that this can be joined together with the torsion bar spring 7 with the two profile strips 3 to be connected.

How out 10 As can be seen comparatively clearly, in this embodiment the (first) spring end 71 of the torsion bar spring 7 which does not protrude from the support frame 5 is not bent. A twisting of this spring leg 71 is achieved by the special shape of the loop-shaped spring wire bend connecting the leg ends 75, 76.

When installing the corresponding protective grille 2 on a window opening or on its window frame, the (second) spring ends 72 of several installed torsion bar springs 7 protruding from the support frame 5 are bent up in order to form one of their folded edges after the protective grille 2 is inserted or attached to the window frame to get behind it. Due to the restoring force of the torsion bar springs 7, a non-destructive, detachable and reliable mounting of the protective grille 2 on the window frame is possible.

Below is a second embodiment of the protective grille 2 based on 11 to 18 explained in more detail.

The 11 shows a protective grille 2 designed as an insect protection window with a telescopic frame system or support frame 5 '. The frame system 5 'is in the 11 shown in dashed lines in a telescoped state. On the other hand, the frame system 5 'is shown in an expanded state with solid lines.

The profile strips 3 of the frame system 5 'are designed as telescopic profiles (telescopic hollow profiles). In other words, the protective grille 2 is designed as a telescopic window or the frame system as a telescopic frame 5 '. The profile strips 3 each have an outer profile (outer profile strip) 3a and at least one telescopically inserted or insertable inner profile (inner profile strip) 3b.

Like in the 2 As can be seen comparatively clearly, the inner profiles 3b have a profile chamber (fastening chamber) 32b. The profile chamber 32b is designed to be closed, this means that the profile chamber 32b is designed as a circumferentially closed channel which is only open on the two end faces of an inner profile 3b.

The profile chamber 32b is flanked on the inside of the frame by a profile chamber 33b and extends to the outside of the frame below a profile chamber 31 b. The profile chamber 33b has a joining chamber on the front side of the frame, unspecified, and a guide chamber on the back of the frame, unspecified. The joining chamber opens into the guide chamber via a longitudinal profile slot running in the longitudinal direction of the profile, with the guide chamber being open on the back of the frame.

The chambers 31b, 32b, 33b are accessible from the end faces of the inner profiles 3b. Furthermore, the guide chamber is accessible via the rear opening and the joining chamber underneath is accessible via the longitudinal profile slot. The inner profiles 3b can be made of plastic, for example, but the inner profiles 3b are preferably made of aluminum and are designed, for example, as extruded parts.

This in 13 The outer profile 3a shown has two profile chambers (outer chambers) 31a, 33a, which run in the longitudinal direction of the profile and are each accessible by means of a longitudinal profile slot, and a profile chamber (inner chamber) 32a that is closed (in cross section).

The inner profile 3b is pushed or inserted at the front into the profile chamber 32a of the outer profile 3a. The profile chamber 33b is arranged below the profile chamber 33a, and the profile chamber 31b is arranged below the profile chamber 31a. The chamber walls of the profile chamber 31a, 33a projecting into the profile chamber 31b, 33b are surrounded by the profile chambers 31b, 33b of the inner profile 3b in an approximately U or C shape. The profile chambers 31b, 33b in the inserted state thus form the profile chambers 31a, 33a of the outer profile 3a. In other words, the inner profile 3b is mounted or guided in a linearly movable manner by means of the profile chambers 31b, 33b on the profile chambers 31a, 33a of the outer profile 3a.

Those profile chambers 33a of the outer profiles 3a which face the inside of the frame in the assembled state are here provided and set up to accommodate a holding element for fastening the mesh fabric 6. The holding element, not shown in more detail, can be pressed into the profile chamber 33a to fasten the mesh fabric 6. The piping-like holding element, for example, is in particular a bending-elastic or rubber-elastic piping strip. Alternatively, the holding element is designed, for example, as a piping cord, which is inserted into the profile chamber 33a, for example by means of a piping tool.

The profile chamber 31a on the outside of the frame is designed to accommodate a sealing element in the form of a sealing brush, not shown in detail.

The outer profiles 3a can be made of plastic, for example, but the outer profiles 3a are preferably made of aluminum and are designed, for example, as extruded parts.

In the 14 and 15 Two adapter strips 8, 9 are shown for the inner profile 3b.

The adapter strip 8 is drawn into the profile chamber 33b of the inner profile 3b. The adapter strip 8 has an integrated adapter chamber 81, which has a cross section that essentially corresponds to the profile chamber 33a, so that the adapter strip 8 effectively forms an extension of the profile chamber 33a in the assembled state. The adapter chamber 81 is accessible from the rear of the frame by means of a longitudinal profile slot, for example in order to press the holding element into the adapter chamber 81. An approximately T-shaped holding extension 82 is integrally formed on the adapter chamber 81, which sits in a form-fitting manner in the joining chamber and the longitudinal profile slot of the profile chamber 33b.

The adapter strip 9 is drawn into the profile chamber 31b of the inner profile 3b. The adapter strip 9 has an integrated adapter chamber 91, which has a cross section that essentially corresponds to the profile chamber 31a, so that the adapter strip 9 effectively forms an extension of the profile chamber 31a in the assembled state. The adapter chamber 91 is accessible from the rear of the frame by means of a longitudinal profile slot, so that, for example, the sealing brush can protrude. An approximately T-shaped holding extension 92 is integrally formed on the adapter chamber 91 and sits in a form-fitting manner in the profile chamber 31b.

For simple and non-destructive attachment of the protective grille 1 to the building or window opening, two torsion bar springs 7 'are provided on the lower frame corner areas or profile connectors 4, which are inserted into the profile chambers 32a, 32b of the profile strips 3a, 3b. The structure and function of the torsion bar spring 7 'is explained below based on 16 to 18 explained in more detail.

The torsion bar spring 7' is designed as a spring clip with a bent spring wire. The torsion bar spring 7 'is designed in particular in the manner of a leg spring, and in particular has two spring legs 73, 74 and a connecting section 77 arranged between them, which connects the leg ends 75, 76 to one another in one piece.

The torsion bar spring 7 'protrudes from the longitudinal profile by means of the spring end (clamping leg) 72 slot or out of the profile chamber 33a or adapter chamber 81. The L-shaped spring end 72 has a retaining lug 78 on the free end, the retaining lug 78 being essentially formed by the horizontal L-leg. In this exemplary embodiment, the free end of the retaining nose 78 is covered with a protective coating (protective paint, protective varnish) in order to avoid damage, especially scratches, to the frame rebate edge as much as possible. Alternatively, an elastic protective or rubber sleeve can also be placed on the retaining lug 78 (see exemplary embodiment of 1 to 10 ).

The protruding spring end 72 has a support crank 79a as a transition to the spring leg 73.

In the area of the holding nose 78, a gripping or handle crank 79b oriented towards the support frame 5 'is also formed on the spring end 72.

To attach the protective grille 1, the spring end 72 is bent away from the back of the frame and fixed to a rebate frame of the window opening. For this purpose, an edge of the folding frame (folding frame edge) is gripped behind using the retaining lug 78. Due to the handle crank 79b, the spring end 72 does not lie flat against the back of the frame, but stands slightly away from it. This means that the spring end 72 can easily be grasped by a user in the area of the handle crank 79b in order to move the holding lug 78 behind the edge of the folding frame. Here, the support crank 79a is placed from above onto the folding frame edge, so that the torsion bar spring 7' - and thus the frame system 5' or the protective grille 5' - is supported from above on the folding frame edge. As a result, the protective grille 2 or the frame system 5 'does not lower in the assembled state over the service life.

In order to ensure a secure and stable attachment, the torsion bar spring 7 'is fixed or supported in the profile connector 4 and in the profile chamber 32a, 32b in a positive and/or non-positive manner by means of the spring legs 73, 74 and/or the spring end 71.

The invention is not limited to the exemplary embodiments described above. Rather, other variants of the invention can also be derived from this by the person skilled in the art without departing from the subject matter of the invention. In particular, all of the individual features described in connection with the exemplary embodiments can also be combined with one another in other ways without departing from the subject matter of the invention.

In particular, the torsion bar spring 7 and the profile connector 4 of the variants shown and described can in principle be used both for an insect protection window and for an insect protection door. The only thing to note here is that the spring end 72, which is led out of the support frame 5, projects beyond the support frame 5 outwards in the case of the insect protection door and preferably points inwards in the case of the insect protection window.

Reference symbol list

1

Protective grille/door

2

Protective grille/window

3

Profile bar

3a

External profile

3b

Internal profile

31, 31a, 31b

(outer) profile chamber

32, 32a, 32b

(middle) profile chamber

33, 33a, 33b

(inner) profile chamber

4

Profile connector

41

leg of the foot

42

first channel/receiving chamber

42

channel

44

Passage opening

45

first leg of the foot

46

second leg of the foot

47

receiving groove

5, 5'

Frame system, supporting frame

6

Mesh fabric

7, 7'

Torsion bar spring

71

first spring end

72

second spring end

73

Spring leg

74

Spring leg

75

thigh end

76

thigh end

77

connection section

78

holding nose

79a

Support crank

79b

Handle offset

8th

Adapter strip

81

Adapter chamber

82

retaining process

9

Adapter strip

91

Adapter chamber

92

retaining process

L

Profile longitudinal direction

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10034071 B4 [0004]
• DE 202006007537 U1 [0005]
• EP 3940187 A1 [0027]

Claims (17)

Protective grille (1, 2), with a support frame (5, 5') assembled or mountable from profile strips (3, 3a, 3b) and profile connectors (4) for a mesh fabric (6) that can be clamped therein, and with at least one torsion bar spring (7, 7') with a first spring end (71) fixed in the support frame (5, 5') and with a second spring end (72) protruding from the support frame (5, 5'), - wherein the torsion bar spring (7, 7') has two mutually parallel spring legs (73, 74) which are connected to one another at the leg ends (75, 76) facing away from the two spring ends (71, 72), - wherein the spring legs (73, 74) are seated in a first profile chamber (31, 31a, 31b, 32, 32a, 32b) of one of the profile strips (3, 3a, 3b), and - wherein the two spring ends (71, 72) are guided in the profile connector (4) connected to this profile strip (3, 3a, 3b), the first spring end (71) being seated in a form-fitting manner in this profile connector (4), and the second Spring end (72) emerges from this profile connector (4). Protective grille (1, 2). Claim 1 , characterized in that the torsion bar spring (7, 7') is a spring wire that is bent in a loop shape to form the two spring legs (73, 74) and bent at the end to form at least the second spring end (72). Protective grille (1, 2). Claim 1 or 2 , characterized in that the or each profile strip (3, 3a, 3b) in addition to the first profile chamber (31, 31a, 31b) accommodating the spring legs (73, 74) of the torsion bar spring (7) has a joining leg (41) of the profile connector ( 4) receiving middle second profile chamber (32, 32a, 32b) has an inner third profile chamber (33, 33a, 33b) for receiving a holding element for the mesh fabric (6). Protective grille (1, 2) according to one of the Claims 1 until 3 , characterized in that the profile connector (4) has a first channel (42) aligned with the first profile chamber (31, 32) of the profile strip (3) which accommodates the spring legs (73, 74) and a second channel (43) running transversely thereto , in which the first spring end (71) sits in a form-fitting manner. Protective grille (1, 2). Claim 4 , characterized in that the second channel (43) receiving the first spring end (71) is closed on the circumference at least over part of its channel length, in particular at the end of the first spring end (71). Protective grille (1, 2) according to one of the Claims 1 until 5 , characterized in that the profile connector (4) has an opening (44) on the front side which is aligned with the first profile chamber (31) of the profile strip (3), via which the second spring end (72) of the torsion bar spring (7) comes out of the profile connector (4). exit. Protective grille (1, 2) according to one of the Claims 4 until 6 , characterized in that the profile connector (4) has a first joining leg (45) received by the first profile chamber (31) of the profile strips (3) and a second joining leg (46) perpendicular thereto, the first channel (42) leading to the first joining leg (45) and the transverse second channel (43) is arranged to run parallel to the second joint leg (46). Protective grille (1, 2) according to one of the Claims 4 until 7 , characterized in that the second channel (43) of the profile connector (4) opens out at a right angle from its first channel (42). Protective grille (1, 2) according to one of the Claims 4 until 8th , characterized in that the first channel (42) of the profile connector (4) leads an end section (77, 78) of the two spring legs (73, 74), the end section (78) of the corresponding spring leg (78) assigned to the first spring end (71) ( 73) is shorter than the end section (78) of the second spring leg (74) assigned to the second spring end (72). Protective grille (1, 2) according to one of the Claims 1 until 9 , characterized in that the two spring ends (71, 72) of the torsion bar spring (7) extend horizontally, preferably in opposite directions, with respect to the vertically extending spring leg sections of the torsion bar spring (7), the second horizontal spring end emerging from the profile connector (4). (72) projects vertically beyond the first horizontal spring end (71) seated in this profile connector (4). Protective grille (1, 2) according to one of the Claims 1 until 10 , characterized in that the spring leg (73) of the second spring end (72) has a support crank (79a), by means of which the torsion bar spring (7 ') is supported on one edge. Protective grille (1, 2) according to one of the Claims 1 until 11 , characterized in that the second spring end (72) has a free-end retaining lug (78) for reaching behind an opening frame, the retaining lug (78) being bent with respect to the second spring end (72). Protective grille (1, 2) according to one of the Claims 1 until 12 , characterized in that the Profile connector (4) is designed in two parts with two profile connector parts, wherein the profile connector parts are inserted or can be inserted into different profile strips (3, 3a, 3b), and wherein the profile connector parts can be joined to one another in a form-fitting and/or force-fitting manner. Protective grille (1, 2) according to one of the Claims 1 until 13 , characterized in that the profile strips (3) are designed to be telescopic with an inner profile (3b) and with an outer profile (3a). Insect protection door (1) with at least two hinges (8) held on a support frame (5, 5') formed from profile strips (3, 3a, 3b) and profile connectors (4) and with a torsion bar spring (7, 7') with two parallel ones and spring legs (73, 74) each having a spring end (71, 72) at the end, which are seated in a profile chamber (31) of one of the profile strips (3, 3a, 3b) and on the leg ends (71, 72) facing away from the two spring ends (71, 72). 75, 76) are connected to one another, the spring legs (73, 74) being guided in the profile connector (4) connected to this profile strip (3, 3a, 3b), and the first spring end (71) being in this profile connector (4). sits in a form-fitting manner, while the second spring end (72) emerges from this profile connector (4). Insect protection window (2) with a support frame (5) formed from four profile strips (3, 3a, 3b) and four profile connectors (4) and with at least two torsion bar springs (7, 7 '), each with two parallel spring ends (71 , 72) having spring legs (73, 74), which are connected to one another at their leg ends (75, 76) facing away from the two spring ends (71, 72) and are seated in a profile chamber (32) of one of the profile strips (3, 3a, 3b). , wherein the spring legs (73, 74) are guided into the profile connector (4) connected to the profile strip (3), and the first spring end (71) is seated in a form-fitting manner in this profile connector (4), while the second spring end (72) is out exits this profile connector (4). Having a torsion bar spring (7') for a protective grille (1, 2). - a first spring end (71) and a second spring end (72), - two mutually parallel spring legs (73, 74), which are connected to one another at their leg ends (75, 76) facing away from the two spring ends (71, 72), - wherein the spring leg (73) of the second spring end (72) has a support crank (79a) for support on an edge.

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