DK2495383T3

DK2495383T3 - SLIDE BRAKE FOR TURNING WINDOWS, DOORS OR SHUTTERS

Info

Publication number: DK2495383T3
Application number: DK12155996.7T
Authority: DK
Inventors: Torbjörn Blomqvist
Original assignee: Inwido Ab
Priority date: 2011-03-01
Filing date: 2012-02-17
Publication date: 2017-07-24
Also published as: SE535057C2; EP2495383A3; EP2495383A2; EP2495383B1; SE1100139A1

Description

DESCRIPTION

TECHNICAL FIELD

[0001] The present invention relates to a device with a slide brake in particular for turnable windows, but also for similar constructions regarding doors or shutters which are pivoting around a shaft. The slide brake is arranged at the slide bar of the turnable window and by this slide brake free selectable airing positions are allowed, i.e. more or less open positions of the window, shutter or door, by that the slide brake continuously brakes the movement of the casement.

BACKGROUND

[0002] In the following, turnable windows are used to exemplify the device, but it is not limited to only this application.

[0003] Turnable windows are usually provided with so called swinging arms assemblies, where the assemblies are mirror symmetrical and are in pairs located on each respective side of the window casement, between frame and casement. The swinging arm assemblies allow that the window can be pivoted around essentially 180°, or at least almost 180°, so that the outside of the window easily can be cleaned from the inside. Principally, the respective swinging arms assembly usually consists of an outer assembly arm, whose lower part is articulately mounted near the middle of the lateral part of the window casement. The upper part of the outer assembly arm is articulately attached with an upper swinging arm, which in turn is articulately attached in its lower end, to one in the frame fixedly arranged frame plate. In the lower part of the frame plate a lower swinging arm is articulately attached and in addition this is in its upper part articulately attached to the outer assembly arm, somewhat below the mounting point of the upper swinging arm. The upper part of the window casement is usually slideably mounted and guided to a slide groove or sliding notch, arranged in the respective lateral frame, via upper assemblies, which are articulately arranged with a slipper. The slipper in turn is arranged to slide along the extension of the lateral frame whereby the upper part of the window is guided to nearly linear movement along the lateral frames, while the bottom part of the window casement is allowed to swing around from the closed position of the window to its reversed position, principally 180° compared to its closed position. The slide groove usually includes a slide rail of for instance plastic, and in this case the slipper runs in this slide rail with more or less friction between the slipper and surrounding surfaces at the slide rail. From a security point of view pivoting windows must be provided with a so called childproof lock/child blocking device which see for that the window cannot be opened more than is provided by the norms (in Sweden 100 mm) in the lower edge, without at first in some way set this safety lock or block free and thereafter allow the window to be further opened. This is a measure of precaution to prevent, foremost small children, from opening the windows and fall out. In addition, it is usual to provide the construction with some form of airing assembly that prevents an undesired closing or opening of the window, while the same is subjected to for example wind pressure, negative pressure or draught. It is also a risk for injuries caused by squeezing if the window can be closed in an uncontrolled way.

[0004] Known solutions of the above mentioned art are for instance disclosed in SE-B-464,482 (SE 8902843-5) where a swinging arm assembly is provided with a childproof lock and a separate airing blocking device. The childproof lock consists in that case of a plate with a lock recess in the shape of a guiding groove and a nose, which nose guides a holding element in the shape of a stop rivet into the groove and the groove has a rest position for the rivet in the closed position of the window and also a blocking position for the childproof lock of the window. This solution has a separate airing blocking device in the shape of a foldable arm, which, mostly in the children blocked position, is folded out and is clamped between the casement and the frame whereby the window is prevented from unintentionally being closed. With folded out airing blocking device the window is locked for movements both outwards and inwards relative to the frame. A device disclosed in document NO 320116 is further built on the childproof lock of SE-B-464,482 but differs in that, instead of the separate out foldable arm there is an additional deep groove in the childproof lock introduced together with the position of childproof blocking, whereby a firm, locked position is obtained where the window is locked in both directions. In that way both the childproof lock and the airing blocking device is obtained with one and the same detail.

[0005] The mentioned solutions, but also other constructions of the above stated art are however marred by several imperfections and inconveniences. In one of the above said solutions the airing blocking device is provided with two details, the locking arm together with the childproof lock, which means that the airing blocking device doesn't work absolutely sufficiently if the child proof lock isn't active, the airing blocking device is at least partly dependent of the child proof lock. The second solution indeed consists of one detail but has the disadvantage that it always is fastened in airing position, apart from if this is desired or not, whereafter the blocking device must be handled to make it possible to close the window.

[0006] Another problem by existing blocking devices is that they only offer one single fixed airing position, given from the design, the dimensions and the location of the blocking device/devices, and that this airing position only is offered with an opening that is smaller than or equal to the maximal opening dimension in the child proof locked position. In addition those locking devices must be handled in one or another way, to be disengaged, i.e. also when one wants to close the window, in those solutions the locking devices must be manually disengaged before the window can be closed.

SUMMARY

[0007] The present concept is defined in the appended independent claims, wherein preferred variants are set forth in the related dependent claims.

[0008] The airing position isn't in any way dependent on the child proof lock, which the older solutions are, in one or another way. The complete construction includes a child proof lock, but it is totally disconnected from the airing locking device and the airing function is obtained by a separate slide brake. Turnable windows comprise, as is described above, at least one slide groove or a sliding notch arranged in respective lateral frame. In the respective slide groove a slipper is arranged to slide, at the movement of the window between its closed and its reversed position, and hence the upper part of the window is guided according to a nearly linear movement along the slide groove, because the slipper is articulately attached at the upper assemblies arranged on the upper part of the window casement. The slipper is in older solutions arranged to slide smoothly in the whole length of the slide groove so that the window by opening and turning easily can be handled in all positions. The slipper of the device of the present invention slides smoothly in predetermined parts, while the friction in at least one part, a subarea, is larger than in the other parts of the slide groove. This is made possible by that the slide groove in the subarea comprises a constriction, which in this way is local in the subarea. By this procedure a braking force occurs, an increased friction, between the slipper and the slide groove. In this subarea, this results in that the movement of the slipper is braked when the slipper comes into this subarea. By that a braked position is obtained for the window frame, i.e. an airing position, because its upper part is articulately attached to the slipper. The local constriction in the subarea determines how stiffly the slipper will slide in the area. By adapting the influence of the constriction on the cross-section the friction is selected in a way that it will be sufficiently stiff for the airing function, i.e. that the friction is able to hold the window in the selected position without that wind forces and the like alter the position of the window casement, but isn't to stiff to handle the same by opening or closing. Taken together the function is such that by opening the window, i.e. during a section initially at the opening of the casement, the movement is smooth, because the slide groove does not include any constriction in this area, and when the slipper then passes the constriction, the further opening movement is again smooth. It must also be mentioned that somewhere at the opening movement the child proof lock is arranged to come into effect. Thus, a continuously airing locking device, with a large number of airing positions is obtained, and the airing locking device is automatically "disengageable", i.e. it is possible to close, or to open the window casement more or less in spite of the fact that the airing locking device is active. By that it is not necessary, as in earlier solutions, to handle the airing locking device in the airing position to disengage it. In addition there is no limitation that the airing positions only exists within the maximal limit of the child proof lock of the opening dimension, which previously was the case.

[0009] The subarea, including the constriction, may be located along the slide groove in a selected and tested position whereby the airing position may occur at a place where it is desired that the function will come into force. According to a variant, this preferably comes into force somehow before the locking device in the child proof function is engaged with the holding element which is provided for the child proof lock, and the continuously airing position is thereafter in operation, preferable a short distance past the child proof locked position. This means that the airing position can be used before the child proof locks further opening possibilities, and if a larger opening is desired for airing, the child proof lock will be disengaged, and by that a further distance is accessible for an optional airing position. Of course the airing locking device also works in the child proof locked position while the window casement is locked for outwards movement via the child proof lock and stiffly movable for inwards movement via the airing function. However, the concept does not limit the location of the subarea with its constriction, to the above, the location of the subarea can be selected along the slide groove in a way that suits the intended application. Accordingly, there is no limitation meaning that the airing position only can occur within the child proof locked maximal opening dimension, which is the case in earlier solutions.

[0010] The length of the subarea with its constriction, may be selected and tested, whereby the braked, continuously airing position of the casement may be active during a part of the movement of the window casement that is as large as desired for the current application. By determining the outermost positions of the constriction along the slide groove the size of the airing position may be selected. Earlier solutions only exhibit one single, fixed airing position, which cannot be selected. In addition, the airing locking device in older solutions must be disengaged, which isn't necessary according to the described devices.

[0011] According to the invention the friction is increased in the subarea, by that the slide brake is arranged in connection to the slide groove, which slide brake acts on the cross-section of the slide groove, whereby a local constriction is obtained. Either the slide brake can be mounted in a way that it is the slide brake that directly interferes in the cross-section and so comes in contact with the slipper at the passage, or alternatively that the slide brake influences one, where appropriate, in the slide groove arranged slide rail so that this, by the influence of the slide brake, becomes narrower in the subarea, whereby the passage of the slipper will be more difficult from the constriction of the slide groove in the subarea.

[0012] According to a preferred variant the slide groove comprises this slide rail of plastic or similar suitable material, and preferably, the slide brake is adjusted to the opposite wall of the slide rail and accordingly the increased friction occurs in the area in the contact between the slipper and the wall of the slide rail, at the passage. By mounting the slide brake in a fitted in position, transversal relative the slide groove and the slide rail, the friction is determined in the subarea, whereby a desired braking force is obtained in the subarea, and by that a well-balanced holding-up force in the airing position. By that a continuously airing blocking is obtained.

[0013] The slide brake may be displaceable transversally relative the extension of the slide groove, and by that the friction may be adjustable in the subarea. The slide brake may act on the cross-section of the slide groove and by a movement of the slide brake, mainly transversally in direction to or from the slide groove, the cross-section may be increased or decreased for the passage of the slipper and a decreased or increased friction/braking force is obtained in the subarea. On the whole, older solutions don't offer any analogous adjustable arrangements; they are only entirely locked and moreover they must manually be disengaged. According to a first concept of invention, the device has a slide brake with an L-shaped cross-section, an angular shape, i.e. two legs with an intermediate angle of preferably 90° and preferably the slide brake may be a sheet metal or plastic detail. The first leg of the slide brake is arranged to influence the cross-section of the slide groove whereby the slide brake interferes in the possible passage of the slipper in the subarea, where a local constriction is obtained. The second leg may include notches or lugs arranged for attachment of the angular detail against the lateral parts of the frame. Either the slide brake can be mounted in a way such that it is the slide brake that directly interferes in the cross-section and by that contacts the slipper at the passage, alternatively such that the slide brake is fitted in between the slide groove and, where appropriate, the slide rail that is arranged in the slide groove. According to a preferred variant the slide groove comprises a slide rail of plastic or similar suitable material and preferable the first leg of the slide brake is fitted in between the one wall of the slide groove and the opposite wall of the slide rail and by that the increased friction occurs in the area in the contact between the slipper and the wall of the slide rail, at the passage. By mounting the slide brake in a fitted in position, transversally relative the slide groove, the friction is determined in the subarea, whereby a desired braking force is obtained in the subarea, and accordingly a well-balanced holding-up force in the airing position. Alternatively, the thickness of the first leg, which acts on the cross-section of the slide groove, can naturally be fitted in, so that the same result is obtained. By this a continuously airing blocking device is obtained, which moreover simple and possible can be mounted afterwards to complete an existing installation, also when the construction of the window necessarily has been prepared for this function. This is very difficult in older solutions.

[0014] The slide brake may be transversally displaceable relative the extension of the slide groove, and hence the friction may be adjustable in the subarea, by that the slide brake may include one or more notches, which may be oblique and preferably elliptic. By coordinating those notches with the attachments that are used for attaching the slide brake to the frame, a possibility is obtained to displace the slide brake slightly in the direction of the extension of the slide groove, upwards to the upper part of the frame or downwards to the lower part of the frame, whereby the slide brake at the same time is displaced transversally, in direction to or from the slide groove, thanks the oblique notches, whereby the cross-section for the passage of the slipper is increased or decreased resulting in a decreased or increased friction/braking force. By that a continuously and automatically disengageable airing blocking device is obtained, which in addition has an adjustable friction. Older solutions offer no adjustable alternative, while the present solution is adjustable, either by adjusting the braking force initially by delivery or installation, and also in a later phase if a need or a desire of an adjustable braking force occurs.

[0015] The slide brake may be transversally displaceable relative the extension of the slide groove, and by that the frictional force may be adjustable in the subarea, by that the slide brake may include one or more notches, that are coordinated with one or more eccentric devices, which preferably also are used by the anchoring of the slide brake to the frame. By pivoting the eccentric devices, a movement of the slide brake will occur, mainly transversally in direction to or from the slide groove, whereby the cross-section for the passage of the slipper is increased or decreased whereby a decreased or increased friction or braking force is obtained. Hereby a continuously and automatically disengageable airing blocking device is obtained where the same advantages, above described in relation to older solutions, are obtained. According to a second concept of invention, the device comprises a slide brake, which comprises a flexible material, preferably rubber. While the slide brake is arranged, preferable in a notch, close by the slide groove, the slide brake acts more or less or not at all on the cross-section of the slide groove, by that the slide brake is allowed to expand, as a consequence from that the slide brake is compressed. By that the location of the slide brake and by that its fixed arranged position close to the slide rail is tested out for a just enough braking force, a further expand implies that the side of the slide brake, that is arranged against the slide groove, acts/interferes furthermore on the cross-section of the slide groove, which means that the local constriction is increased in the subarea. The slide brake is preferably compressed by that the attachments, that fixed arranges the slide brake to the frame, comprises corbelling-out sections, which are arranged to press against the slide brake towards the frame, resulting in that the slide brake expands corresponding to the tightness of the attachments against the frame.The slide brake of the device according to the second concept of invention comprises at least one notch, through which notch attachments for the fastening of the slide brake, preferably a screw, are introduced, and this screw is screwed inwards against the frame to attach the slide brake to the frame. Because the screw comprises a corbelling-out part, preferably a screw head, which is sufficiently large to press on the edges of the notch, the slide brake expands, depending on its resilience, during the influence of the pressing force from the screw head, and the harder the screw is applied against the frame, the more the slide brake is expanded. In this way the influence of the slide brake on the cross-section of the slide groove in the subarea becomes adjustable, whereby the friction is increased or decreased, depending on the degree of the expanding the slide brake. The slide brake can either be arranged in a way that it directly contacts the slipper, when the slipper passes the slide groove, whereby the adjustable braking force is constituted between the slipper and the slide brake, alternatively the slide brake can be adapted to the earlier said slide rail, which in this case is compressed in the subarea by the influence from the expansion of the slide brake, and the adjustable braking force then occurs between the slipper and the wall of the slide rail in the subarea. The number of notches in the slide brake is not limited to only one, but preferably the notches are several, whereby an increased flexibility is obtained. By that an adjustable braking force is obtained in the device according to the variant, which is missing in the older solutions and a continuously and accordingly an automatic disengageable airing blocking device is obtained.According to a third concept of invention, the device comprises a slide brake with two parts, a thin walled cover with preferably wedge-shaped lateral walls, and a wedge-shaped core, which core is displaceably arranged in the cover. When the complete slide brake is arranged, preferable in a notch, close to the slide groove, the slide brake is acting more or less or not at all on the cross-section of the slide groove, by that the slide brake is allowed to expand in different degrees towards the slide groove. When the slide groove interferes with the cross-section of the slide groove, in the subarea, the accessible passage for the slipper is decreased, which by that is braked in the subarea. The slide brake can either be arranged in a way that it is in direct contact with the slipper, when the slipper passes the slide groove, whereby the adjustable braking force is constituted between the slipper and the slide brake, alternatively the slide brake is adapted against the said slide rail, which in this case is compressed in the subarea during influence of the expansion of the slide brake, and the adjustable braking force is then constituted between the slipper and the wall of the slide rail in the subarea. The wedge-shaped core comprises through notches, which preferably is used by the attachment of the slide brake to the lateral parts of the frame, by that the attachments, for instance screws, are introduced through the notch/notches, and are thereafter screwed into the frame. By that the slide brake is fixedly arranged against the frame in a preferable tested position. By that the wedge-shaped core is displaceably arranged in the cover, inwards/outwards from the frame in the mounted position of the slide brake, the walls of the core influence the surrounding thin and wedge-shaped walls of the cover, in different degrees depending on the position of the core in the cover. Depending on how deep the core is screwed into the cover the thin wedge-shaped is pressed out, more and more the deeper the core is screwed into the cover, towards the frame, because of the wedge-shaped cross-section of the core, and in this way the slide brake is expanding more and more. The friction in the subarea is in this way made adjustable, because the position of the core is adjustable. Because the position of the slide brake and accordingly its fixedly arranged position besides slide rail is tested out for a just enough braking force, a further expanding implies that the side of the slide brake which is arranged against the slide groove, acts/interferes additionally on the cross-section of the slide groove, resulting in that the local constriction is increased in the subarea, and accordingly also the friction. On the other hand the friction is decreased in the subarea by decreased expansion. Accordingly, an adjustable airing blocking device is obtained in the device according to the variant, which is missing in older solutions and a continuously and thus an automatic disengageable airing blocking device is obtained.

[0016] The first leg of the slide brake may comprise a conical cross-section and the slide brake may moreover be displaceably arranged in direction inwards and/or outwards relative the lateral parts of the frame. By that the slide brake is displaced, for instance inwards to the frame and where the cross-section of the first leg for instance has a sharp shape, i.e. the leg is broadest close to the base and narrowest at its outer end, the first leg then acts more and more on the cross-section of the slide groove, i.e. takes up more space in the slide groove, and hence the friction in the subarea is increased. On the other hand is then, by this way of arrangement, the friction decreased in the case where the slide brake is displaced outwards relative the frame. The first leg can be fitted either directly in the slide groove or alternatively between the one wall of the slide groove and corresponding wall at the slide rail. Thus, an adjustable braking force is obtained in the device, which is missing in older solutions. Of course the design/conicity of the cross-section can be inversed, whereby the function that is described above is reversed, by a movement to and from the frame.

[0017] The slide brake of the device according to the first concept of invention may comprise a toothed side, which may be directed to the slide groove. Correspondingly, the sipper also may comprise, according to this variant, a toothed side, which in turn may be directed towards the slide brake. Because the slide brake is arranged at the slide groove, in a tested position, both toothings may cooperate and grip into each other, when the slipper passes the slide brake, resulting in that a tested and increased friction occurs in the subarea comprising the slide brake, in relation to the friction in other areas.

[0018] Preferably, the slide brake is in this case an L-shaped, angular detail in plastic or sheet metal, according to an earlier variant, where the first leg, which is arranged to act on the cross-section of the slide groove in the subarea for the slide brake, is provided with the toothing. Where appropriate and according to a preferred variant, the slide groove comprises a slide rail and in that case the first leg is fitted in into the slide rail itself, resulting in that the slipper with its toothing and the first leg with its toothing, contacts each other and the friction is accordingly increased in the subarea relative the other areas. Thus, a continuously and automatic airing blocking device is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In detail represents in diametrical, partly schematic cross sections or perspective views: • Fig. 1a shows a first embodiment of the device according to the first concept of invention in a cross-section through the upper part of the frame construction with the swinging arms assembly and the slide brake. • Fig. 1b shows the device according to Fig. 1a in a partial view of the location of the slide brake together with the slide groove and the upper assembly. • Fig. 2a shows the device according to Fig. 1 a in a cross-section through the upper part of the frame construction with the 20 swinging arms assembly and the slide brake. • Fig. 2b shows the device according to Fig. 1a in a detail view with the slide brake, arranged at the slide groove, and the upper assembly with its articulated attachment to the slipper. • Fig. 2c shows the device according to Fig. 1 a in a cross-section through the right lateral part of the frame, with the slide groove, the slide rail, the slipper and the slide brake and also the upper assembly. • Fig. 2d shows an enlargement of the position of the slide brake between the slide rail and the slide groove, according to Fig. 2c. • Figs 3a-d show a second embodiment of the device according to the first concept of invention, wherein the slide brake comprises lugs for attachment to the lateral parts of the frame. • Figs 4a-d show a third embodiment of the device according to the first concept of invention, wherein the slide brake comprises lugs for attachment to the lateral parts of the frame. • Figs 5a-d show a fourth embodiment of the device according to the first concept of invention, wherein the slide brake comprises oblique notches for attachment and adjustable friction. • Figs 5e-g show a fifth embodiment of the device according to the first concept of invention, wherein the slide brake comprises eccentric devices for adjustable friction. • Figs 6a-c show a device according to the second concept of invention, with a slide brake comprising an elastic material, making that an adjustable friction is obtained. • Figs 7a-d show a device according to the third concept of invention, with a slide brake comprising two parts, one cover and one wedge-shaped core that are displaceably arranged in the cover, which cooperate for an adjustable friction. • Figs 8a-b show a sixth embodiment of the device according to the first concept of invention, wherein the slide brake and the slipper comprise cooperating toothed sides for an adjustable friction.

[0020] The constructive design of the present device is described by the subsequent detailed description of examples of execution referring to the accompanying figures showing a preferred, but not limiting, example of execution.

DETAILED DESCRIPTION

[0021] Figures 1 to 5 show embodiments of the device according to the first concept of invention. Fig. 1a shows a section through the upper part of a frame 1 comprising a lower part 2 (not shown), an upper part 3 and two lateral parts 4. In the lateral parts a casement 5 is pivotally suspended by means of two mirror symmetrical similar swinging arm assemblies 6 which on respective side of the casement is articulately attached at the lateral parts of the casement. At respective ends of the upper part 8 of the casement an upper assembly is arranged, which upper assembly is articulately attached at a slipper 10. The slipper 10 is arranged to slide in a slide groove 7 which slide groove preferably is a milled groove in the lateral parts 4 of the frame, the right and the left lateral part, respective, the slide groove 7 comprises a slide rail 12, preferably of plastic, which is arranged in the slide groove. At the upper part of the slide groove 7, at a distance from the upper part of the frame, an L-shaped slide brake 11 is arranged, which slide brake by its first leg 13 limits the cross-section along the length of the leg, whereby a constriction is established in the subarea. When the lower part of the casement 5 is brought to movement outwards or inwards relative the frame 1 the upper part 8 of the casement follows a linear movement along the slide groove 7 based on the guiding of the upper part 8 by means of the upper assemblies 9 and the articulately slippers 10 in the respective lateral part 4. Initially, when the respective slipper 10 is above the slide brake 11, the slipper 10 slides smooth, when the friction between the slipper 10 and the slide rail 12 in this area is low. When thereafter the slipper reaches the subarea, in which the slide brake 11 is arranged, the friction between the slipper 10 and the slide rail 12 is increased, because the slide brake is acting on the cross-section in the subarea, leading to that it decreases. When the slide brake 11 is passed, the friction is once again low and the slipper slides smoothly. The friction in the subarea is selected in a way that the airing function will be the desired, i.e. intended sluggishness is obtained, whereby the casement remains in the selected airing position, but is still disengageable by that the casement 5 is moved outwards or inwards by hand to the frame 1.

[0022] Fig. 1 b shows an enlargement of the upper part of the one lateral part 4 of the frame 1, to be precise the right lateral part with an example of the slide brake 11 arranged at the slide groove 7, and the upper assembly 9, which is articulately attached to the slipper 10. To minimize the wear on the slipper 10, at its passage by the slide brake 11, the first leg 13 of the slide brake 11 is preferably fitted in between the one lateral wall of the slide rail 12 and the corresponding lateral wall of the slide groove 7, whereby a sharp edge against the first leg 13 of the slide brake 11 is avoided. The second leg 14 of the slide brake 11 is arranged to be mounted to the lateral part 4 of the frame with some form of attachment 20, for instance screws 26 or the like.

[0023] Figs 2a-b show the upper part of the frame 1 with a cross-section through the upper part 3 of the frame, and further the right lateral part 4 in which the slide groove 7, with its slide rail 12, is provided. Figure 2b shows an enlargement of the area around the slide brake 11. In a small distance from the upper part 3 of the frame and in connection with the slide groove the slide brake 11 is fixedly arranged to the lateral part 4 of the frame. The distance from the upper part of the frame is selected in a way that the casement 5 at its opening from closed position has an unbraked length before the slide brake 11 slows down the movement. The length of the slide brake 11 is adapted in a way that the braking length in the subarea with the increased friction will be the intended, whereby the movement of the casement 5 outwards or inwards accordingly will be braked and the continuously airing function will be active and of the desired length. Furthermore, the upper part of the swinging arms assembly 6 and the upper assembly 9 is showed, which is articulately attached to the slipper 10. The slide groove 7 with its slide rail 12, is coordinated with the slipper 10 in a way that the friction between the slipper 10 and the slide rail 12 is just enough smooth for handling of the casement 5 between its closed and reversed position, besides in the selected subarea, where the slide brake 11 is provided. In this subarea the slide rail 12 is somewhat compressed because the slide brake 11 according to the variant is designed as an L-shaped slide brake, whose first leg 13 is fitted between the one lateral wall of the slide groove 7 and the corresponding lateral wall of the slide rail 12. In addition, the second leg 14 is arranged with slightly oblique and long and narrow notches 19, in which attachments, for instance screws 26, are provided for the fixed arrangement of the slide brake against the lateral part 4 of the frame. The screw together with the oblique notch 19 makes an adjustment possible by that the slide brake 11 is moved upwards or downwards along the lateral part 4 of the frame whereby the slide brake at the same time is moved transversally in direction to or from the extension of the slide groove 7. The first leg 13 of the slide brake 11 is then pressed, more or less depending on how the slide brake is displaced, against the wall of the slide rail 12, whereby the accessible cross-section for the passage of the slipper 10 is changed and so the friction in the area is changed.

[0024] Figs 2c-d show a cross-section A-A through the right lateral part 4 of the frame, the slide brake 11 and the slipper 10 and also a detail view of the slide groove 7, comprising the slide rail 12, and the position of the slide brake 11 between those parts. Further the upper assembly 9 is shown and its articulated attachment to the slipper 10. In the shown variant an L-shaped slide brake 11 is provided, which slide brake by its first leg 13 acts locally on the cross-section in this subarea, whereby a constriction occurs in the subarea. The attachment in the shown example of the variant is screws 26, which fixed arrange the slide brake 11 against the lateral part 4 of the frame. The first leg 13 of the slide brake 11 is fitted in between the one lateral wall of the slide groove 7 and the one wall of the slide rail 12 and presses then, more or less depending on how the slide brake is adjusted, against the wall of the slide rail, whereby the accessible cross-section for the passage of the slipper 10 is changed and so the friction in the subarea is changed.

[0025] Figs 3a-d show an alternative embodiment of the device according to the first concept of invention. In this embodiment the slide brake 11 is an angularly shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferably with an angel of ca 90° between the legs. The first leg 13 is preferably provided between the one wall of the slide rail 12 and the corresponding wall of the slide groove 7 and the second leg 14 is designed with upturned lugs 27 which are provided for the anchoring of the slide brake 11 against the lateral part 4 of the frame. Those lugs 27 are stroked or pushed, preferably inwards, to the lateral part 4 of the frame resulting that the slide brake 11 will be fixedly mounted in the position along and relative the slide groove 7 that is desired for the current application, and this position can, as is described before, be selected both in relation to the longitudinal location along the slide brake 7 and the transverse location inwards to the slide groove 7 in such a way that the desired friction is obtained. By that the first leg 13 is fitted in between the one wall of the slide rail 12 and the corresponding wall of the slide groove 7, the accessible dimension for the passage of the slipper 10 is limited and by that the friction is increased between the slipper 10 and the slide rail 12. The length of the slide brake 11 can be selected to make an individual selection of the size of the airing position possible.

[0026] Figs 4a-d show another alternative embodiment of the device according to the first concept of invention. In this embodiment the slide brake 11 is an angularly shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferably with an angel of ca 90° between the legs. The first leg 13 is preferably provided between the one wall of the slide rail 12 and the corresponding wall of the slide groove 7 and the second leg 14 comprises the lugs 27 which are provided for the anchoring of the slide brake 11 against the lateral part 4 of the frame. Those lugs 27 are stroked or pushed, preferable inwards, to the lateral part 4 of the frame, to be precise in the one lateral wall of the slide groove 7, resulting in that the slide brake 11 will be fixedly mounted in the position along and relative the slide groove 7 that is desired for the current application. This position can, as is described before, be selected both in relation to the longitudinal location along the slide brake 7 and the transverse location inwards to the slide groove 7 in such a way that the desired friction is obtained. Preferably, the first leg 13 has narrowing and chamfered ends 28 to obtain a soft transition between the unaffected subarea of the slide rail 12 and that subarea in which the slide brake 11 is provided and which accordingly includes the constriction. By that the first leg 13 is fitted in between the one wall of the slide rail 12 and the corresponding wall of the slide groove 7 the slide rail 12 is therefore somewhat compressed and the accessible dimension for the passage of the slipper 10 is decreased and accordingly the friction is increased between the slipper 10 and the slide rail 12. The length of the slide brake 11 can be selected to make an individual selection of the size of the airing position possible. In addition, the thickness of the first leg 13 can of course be selected, whereby the friction is adapted to be the one that is desired for the application.

[0027] Figs 5a-d show another alternative embodiment of the device according to the first concept of invention. Also in this embodiment the slide brake 11 is an angularly shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferably with an angel of ca 90° between the legs. The first leg 13 is provided, preferably between the one wall of the slide rail 12 and the corresponding wall of the slide groove 7 and the second leg 14 comprises the slightly oblique, long and narrow, notches 19 which are provided for attachments of conventional type, for instance screws 26 or the like. The slide brake is preferably firmly screwed against the lateral part 4 of the frame in the position along and in relation to the slide groove 7 that is desired for the current application, and this position can, as is described before, be selected both concerning the longitudinal location along the slide groove and the transversal location inwards to the slide groove 7 in a way that a desired friction is obtained. From this initial point the friction force is thereafter adjustable in the subarea at the slide brake 11, by that one loosen somewhat at the attachments, the screws 26, and thereafter knocks, pushes or in another way influences the slide brake 11, upwards or downwards along the lateral part 4 of the frame, whereby the slide brake 11 will be moved in direction to or from the slide rail 12, based on that the notches 19 are oblique, whereby the slide rail 12 is slightly compressed and the accessible dimension for the passage of the slipper 10 is decreased and by that the friction between the slipper 10 and the slide rail 12 is increased - an adjustable friction is accordingly obtained. After the friction/braking force is set according to the desire, the slide brake is once again firmly screwed against the lateral part 4 of the frame. The length of the slide brake 11 can thus be selected to make an individual selection of the size of the airing position possible [0028] Figs 5e-g show an embodiment of the device, according to the first concept of invention, much alike the one described in figure 5a-d. Also in this embodiment the slide brake 11 is an angularly shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferably with an angel of ca 90° between the legs. The first leg 13 is provided, preferably between the one wall of the slide rail 12 and the corresponding wall of the slide groove 7 and the second leg 14 comprises notches 15 which are arranged for eccentric devices 16, not described in detail. By these eccentric devices or alternatively by other notches 29, especially provided for the anchoring of the slide brake, the slide brake 11 is screwed firmly against the lateral part 4 of the frame in the position along and in relation to the slide groove 7 that is desired for the current application. This position can, as is described before, be selected both concerning the longitudinal location along the slide groove and the transversal location inwards to the slide groove 7 in a way that a desired friction is obtained. By that the eccentric devices 16 are rotatable and eccentric, the slide brake 11 will, by rotation of the eccentrics, be moved in direction to or from the slide rail 12, whereby the slide rail is slightly compressed and the accessible dimension for the passage of the slipper 10 is decreased and by that the friction between the slipper 10 and the slide rail 12 is increased - an adjustable friction is accordingly obtained. The length of the slide brake 11 can be selected to make an individual selection of the size of the airing position possible [0029] Figs 6a-c show an embodiment of the device according to the second concept of invention, wherein the slide brake comprises totally or partly a flexible material, preferably rubber. The slide brake is according to this embodiment provided in a notch in the lateral part 4 of the frame, preferably a milled groove 18, with an open side towards the slide groove 7 and the slide rail 12. The slide brake 11 also includes a number of notches 17, arranged for leading through for instance a screw 26 per notch, for the attachment of the slide brake 11 against the lateral part 4 of the frame. The slide brake is mounted in the milled groove 18 and in this position it is adapted in a way that an influence on the accessible passage for the slipper 10 makes that a larger friction is obtained in the subarea with the slide brake 11, whereby the braking function in the airing blocking device is obtained.

[0030] By the mounting, the screws 26 are tightened with an adapted force and coordinated with the location, which allows for the just sufficiently braking force. The braking force will be adjustable by that the screws 26 are tightened harder against the lateral part 4 of the frame, whereby the screw heads press against the plane surfaces 24 of the slide brake 11, that surrounds the notches 17, leading to that the slide brake expands based on the press force. Because of this the slide brake 11 therefore expands outwards in the slide groove 7, alternatively outwards against the slide rail 12, whereby a constriction is established along the slide brake 11 and the accessible passage for the slipper 10 is decreased and accordingly the friction is increased between the slipper and the surrounding parts - an adjustable friction is accordingly obtained.

[0031] Figs 7a-d show an embodiment of the device according to the third concept of invention, wherein the slide brake 11 includes two parts, one thin walled cover 21 and a wedge shaped core 22, which core 22 is displaceably arranged in the cover 21. The slide brake 11 is arranged in a preferably milled groove 18, close to the slide groove 7, with an open side towards the slide groove 7 and the slide rail 12. By this location the slide brake acts more or less or not at all on the cross-section of the slide grooves 7, by that the slide brake 11 is allowed to expand in different degree in direction to the slide groove 7. When the slide brake interferes with the cross-section of the slide groove 7, in the subarea, the accessible passage for the slipper 10, which thereby is braked in the subarea. The slide brake 11 is according to the variant fitted in against the slide rail 12, which is compressed in the subarea under influence of the expansion of the slide brake 11, and the adjustable braking force then occurs between the slipper 10 and the wall of the slide rail 12 in the subarea. The wedge shaped core 22 includes a through notch 24, which is used by the attachment of the slide brake 11 against the lateral part 4 of the frame, by that the attachments, for instance screws, is introduced through the notch or the notches 24, and is thereafter screwed into the lateral part 4 of the frame. Accordingly, the slide brake 11 becomes fixedly arranged against the frame 1 in a preferable tested position. By that the wedge shaped core 22 is displaceably arranged in the cover 21, in direction inwards/outwards from the frame 1 in the attached position of the slide brake 11, the walls of the core 22 influences the thin and wedge shaped lateral walls 23 that surrounds the cover 21, in different degree depending on the position of the core 22 in the cover 21. Depending on how deep the core 22 is screwed into the cover 21 the thin and wedge shaped lateral walls 23 of the cover are pressed out, more and more the deeper the core 22 is screwed into the cover 21, in direction to the frame 1, and in this way the slide brake 11 expands more and more. The friction in the subarea will therefore be adjustable, because the position of the core 22 is adjustable. By that the position of the slide brake 11 and accordingly, its fixedly arranged position close to the slide rail 12 is tested out for a just enough braking force, a further expansion leads to that the side of the slide brake 11 acts/interferes additionally on the cross-section of the slide groove 7, which makes that the local constriction is increased in the subarea, and accordingly also the friction. On the other hand the friction is decreasing in the subarea by decreased expansion. By that an adjustable airing blocking device is obtained in the device according to the variant.

[0032] Figs 8a-b show another alternative embodiment of the device according to the first concept of invention, wherein the slide brake 11 comprises a toothed side 30, which is directed to the slide groove 7. Correspondingly, the sipper also comprises a toothed side 31, which in turn is directed towards the slide brake 11. Because the slide brake 11 is arranged at the slide groove 7, in a tested position, both toothings 30, 31 will cooperate and grip in each other, when the slipper 10 passes the slide brake 11, resulting in that a tested and increased friction occurs in the area where the slide brake 11 is mounted, compared to the friction in other areas. Preferably, the slide brake according to this embodiment is an L-shaped, angular detail in plastic or sheet metal, where the first leg 1, which is arranged to act on the cross-section of the slide groove 7 in the subarea, comprises the toothing 30. According to the preferred variant, the slide groove 7 comprises a slide rail 12 and in that case the first leg 13 is fitted in into the slide rail 12 itself, resulting in that the slipper 10 with its toothing 31 and the first leg 13 with its toothing 30, contacts each other and the friction is accordingly increased in the subarea relative the other areas. In addition, the second leg 14 of the slide brake 11 also comprises eccentric devices 16, according to earlier described variant, whereby the position of the slide brake 11, transversally relative the slide groove 7, optionally is determined in a way that a desired friction is obtained.

REFERENCES CITED IN THE DESCRIPTION

This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description • SE464482B f80041 f00041 • &E89Q2M.3.5. £00.6.41 • NQ320116 Γ00041

Claims

Device for rotating windows or shutters, said device having a frame (1) with a lower part (2), an upper part (3) and two lateral parts (4) and a wing frame (5) - for example a window wing frame - which is pivotally suspended in the two lateral portions (4) of the frame (1) by means of two mirror-symmetrical straightforward arm assemblies (6) of the device, each lateral portion (4) of the frame (1) including at least one slide groove (7) in which a slide rail (12) of the device is mounted, and wherein an upper part (8) of the wing frame, at each respective short side, includes an upper assembly (9) of the device, the respective upper assembly (9) being articulated by a slide pad ( 10) of the device, the respective slide block (10) adapted to slide, with a certain friction in the slide rail (12) mounted in the slide groove (12), characterized in that the friction is greater in at least one sub-region of the slide groove (7) compared to the friction in the other parts of the slide groove (7), by the sliding groove (7) comprises a narrowing in the sub-region, the narrowing of the sliding groove (7) including a sliding brake (11) provided in connection with the sliding groove (7) acting on the cross-section of the sliding groove (7), whereby said narrowing the slide brake (11) comprises a first leg (13) provided to act on the cross section of the slide groove (7) and a second leg (14) provided to be secured to the lateral of the frame (1) portion (4), and wherein said legs (13, 14) form an L-shaped cross-section with an angle therebetween of preferably 90 °.

Device for rotating windows or shutters, said device having a frame (1) with a lower part (2), an upper part (3) and two lateral parts (4) and a wing frame (5) - for example a window wing frame - which is pivotally suspended in the two lateral portions (4) of the frame (1) by means of two mirror-symmetrical straightforward arm assemblies (6) of the device, each lateral portion (4) of the frame (1) including at least one slide groove (7) in which a slide rail (12) of the device is mounted, and wherein an upper part (8) of the wing frame, at each respective short side, includes an upper assembly (9) of the device, the respective upper assembly (9) being articulated by a slide pad ( 10) of the device, the respective slide block (10) adapted to slide, with a certain friction in the slide rail (12) mounted in the slide groove (12), characterized in that the friction is greater in at least one sub-region of the slide groove (7) compared to the friction in the other parts of the slide groove (7), by the sliding groove (7) comprises a narrowing in the sub-region, the narrowing of the sliding groove (7) including a sliding brake (11) provided in connection with the sliding groove (7) acting on the cross-section of the sliding groove (7), whereby said narrowing is obtained, the friction can be adjusted in the sub-region by the sliding brake (11) comprising flexible material, preferably rubber, wherein the sliding brake (11) is provided to be compressed to a selected degree, by the sliding brake (11) comprising notches (17) through which fasteners for fastening the sliding brake (11) to the lateral portions (4) of the frame (1) may be inserted, the fastening means being preferably screws (26), the projected upper part of which presses the flat end (25) of the sliding brake (11) at the notches (17) edges whereby the sliding brake (11) expands, more or less depending on the compressive force, thereby acting on the cross section of the slide groove (7), thereby reducing the cross section of the slide groove (7) advise increases or decreases.

Device for rotating windows or shutters, said device having a frame (1) with a lower part (2), an upper part (3) and two lateral parts (4) and a wing frame (5) - for example a window wing frame - which is pivotally suspended in the two lateral portions (4) of the frame (1) by means of two mirror-symmetrical straightforward arm assemblies (6) of the device, each lateral portion (4) of the frame (1) including at least one slide groove (7) in which a slide rail (12) of the device is mounted, and wherein an upper part (8) of the wing frame, at each respective short side, includes an upper assembly (9) of the device, the respective upper assembly (9) being articulated by a slide pad ( 10) of the device, the respective slide block (10) adapted to slide, with a certain friction in the slide rail (12) mounted in the slide groove (12), characterized in that the friction is greater in at least one sub-region of the slide groove (7) compared to the friction in the other parts of the slide groove (7), by the sliding groove (7) comprises a narrowing in the sub-region, the narrowing of the sliding groove (7) including a sliding brake (11) provided in connection with the sliding groove (7) acting on the cross-section of the sliding groove (7), whereby said narrowing is obtained, the friction can be adjusted in the lower region by the sliding brake (11) comprising two parts, namely a cover (21) and a wedge-shaped core (22) disposed in the cover (21), the lateral walls (23) of the cover (21) being flexible, preferably thin-walled and wedge-shaped, wherein the core (22) comprises notches (24), which are preferably arranged for attaching the sliding brake (11) to the lateral parts (4) of the frame (1), the core (22) being slidably disposed in the cover. (21), and by moving the core (22) in the cover (21), inwards or outwards with respect to the lateral portions (4) of the frame (1), the sliding brake (11) extends transversely with respect to sliding Men (7). , more or less depending on the position of the core (22) The sliding brake (11) acts on the cross section of the slide groove (7), thereby increasing or decreasing the cross section of the slide groove (7) in the sub-region.

Device according to claim 1, characterized in that the friction can be adjusted in the sub-region by the sliding brake (11) being displaceable substantially transverse to the extent of the sliding groove (7) and correspondingly acting on the cross section of the sliding groove (7), the cross section of the sliding groove (7) in the sub-region is increased or decreased.

Device according to claim 1, characterized in that the friction can be adjusted in the lower region, in that the sliding brake (11) comprises at least one notch (19) which is coordinated with at least one fastening means (20) for anchoring the sliding brake (11) to the frame. (1) lateral portion (4), said at least one notch (19) being oblique and long and narrow, and by sliding the sliding brake (11) in the direction of the extension of the sliding groove (7) upwards towards the upper of the frame (1) part (3) or downwards towards the lower part (2) of the frame (1), the sliding brake (11) is simultaneously displaced transversely in the direction towards or from the sliding groove (7) due to the inclined notches (19), and thus the sliding brake ( 11) on the cross section of the slide groove (7), thereby increasing or decreasing the narrowing of the cross section of the slide groove (7).

Device according to claim 1, characterized in that the friction can be adjusted in the lower region, in that the sliding brake (11) comprises at least one notch (15) which is coordinated with at least one eccentric device (16), which is preferably used for securing the sliding brake. (11) to the lateral portion (4) of the frame (1), wherein said eccentric device (16) is provided to displace the sliding brake (11) transversely to the extent of the slide groove (7) by operating said eccentric device, and thereby the sliding brake (11) acts on the cross section of the slide groove (7), thereby increasing or decreasing the narrowing of the cross section of the slide groove (7).

Device according to claim 1, characterized in that the friction can be adjusted in the lower region, in that the first leg (13) of the sliding brake (11) has a conical cross-section and that the sliding brake (11) is displaceable inwards and / or outwards in relation to to the lateral portions (4) of the frame (1) and in that the first leg (13) acts on the cross section of the slide groove (7), more or less depending on the position of the first leg (13), whereby the narrowing in the cross section of the slide groove (7) the sub-area increases or decreases.

Device according to claim 1, characterized in that the sliding brake (11) comprises a gear assembly (30) on the side facing the sliding groove (7) and the corresponding side of the sliding block (10) facing the sliding brake (10). 11) comprises a gear assembly (31) arranged to cooperate with the gear assembly (30) of the sliding brake (11), whereby the friction is greater in the partial portion of the slide groove (7) as compared to the friction in the other parts of the slide groove (7).

A swivel window, swivel door or swivel shutter comprising a device according to any one of the preceding claims.