EP2495383A2

EP2495383A2 - Slide brake for turnable windows, doors or shutters

Info

Publication number: EP2495383A2
Application number: EP12155996A
Authority: EP
Inventors: Torbjörn BLOMQVIST
Original assignee: Steelform Scandinavia AB
Current assignee: INWIDO AB
Priority date: 2011-03-01
Filing date: 2012-02-17
Publication date: 2012-09-05
Anticipated expiration: 2032-02-17
Also published as: EP2495383A3; DK2495383T3; EP2495383B1; SE535057C2; SE1100139A1

Abstract

Slide brake (11) for turnable windows, doors or shutters, which windows, doors or shutters consists of a frame (1), with one lower part (2), one upper part (3) and two lateral parts (4). In those lateral parts a casement (5) for instance a window casement, is pivoting suspended by two mirror symmetrical equal swinging arm assemblies (6). The lateral parts (4) of the frame includes each at least one slide groove (7), in which a slipper (10) is provided to slide with a certain friction. This slipper (10) is in turn articulated attached to the upper element (8) of the window casement, via the upper assembly (9) on the respective short side of the upper element. The friction between the slipper (10) and its surrounding surfaces are larger in at least one subarea, in the slide groove (7), compared to the friction in other parts of the slide groove (7), by that the slide groove (7) in the subarea comprises a constriction, which brakes the slipper (10) in the subarea, whereby a continuously and automatically disengageable airing blocking device is obtained.

Description

Technical field

Present invention relates to a slide brake for in the first place turn able 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 turn able window and by this slide brake free selectable airing positions are allowed, i.e. more or less open positions by the window, shutter or door, by that the slide brake continuous brakes the movement of the casement.

Background of the invention

Further on turn able windows are used to exemplify the invention, but the invention is not limited by that to include only this application.
Turn able 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 arms assembly allows 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 inside. Principally the respective swinging arms assembly usually consists of an outer assembly arm, whose lower part is articulated mounted near the middle of the lateral part of the window casement. The upper part of the outer assembly arm is articulated attached with an upper swinging arm, which in turn is articulated attached in its lower end, to one in the frame fixed arranged frame plate. In the lower part of the frame plate lower swinging arm is articulated attached and in addition this is in its upper part articulated attached to the outer assembly arm, somewhat below the mounting point of the upper swinging arm. The upper part of the window casement, the upper part, is usually slide able mounted and guided to a slide groove or sliding notch, arranged in the respective lateral frame, via top assemblies, which are articulated 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 se 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 by 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 prevent 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.
Known solutions of the above mentioned art is for instance 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 the frame. The Norwegian NO 320116 is further build on the childproof lock of the Swedish patent but differ from this by that here, instead of the separate out foldable arm, an additional, deep groove in the childproof lock is 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.
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 solution the airing blocking device is provided with two details, the locking arm together with the childproof lock, which means that the airing blocking device don't works absolut 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.
Another problem by existing blocking devices is that they only offers 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 manual disengaged before the window can be closed.

Summary of the invention

With the present invention the aim to solve the above problems in the arrangement of the in the preamble of claim 1 mentioned art is obtained. The airing position in the present invention 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 comprises, 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 articulated attached at the upper assemblies arranges on the upper part of the window casement. The slipper is in older solutions arranged to slide smooth in the whole length of the slide groove so that the window by opening and turning easily can be handled in all positions. In the present invention the slipper slides smooth 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, an airing position, because its upper part is articulated 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 sufficient stiffly 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 stiffly 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 that the slide groove in this area don't includes any constriction, 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, by the present invention a continuously airing locking device, with a large number of airing positions is obtained, and where 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 isn't 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 previous was the case.
According to a preferred form of execution of the invention the subarea, included the constriction, is located along the slide groove in a selected and tested position whereby the airing position occurs at a place where it is desired that that the function will come into force. According to the form of execution this preferable 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 invention does not limits 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 suit the intended application, in the scope of the invention. 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.
According to a preferred form of execution of the invention the length of the subarea with its constriction, is selected and tested, whereby the braked, continuously airing position of the casement is 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 can 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 in the present invention.
According to a further form of execution 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 direct 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. According to the preferred form of execution the slide groove comprises this slide rail of plastic or similar suitable material, and preferable 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 an 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.
According to a further preferred form of execution the slide brake is displaceable transversally relative the extension of the slide groove, and by that the friction is adjustable in the subarea. The slide brake acts 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 is 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 further preferred form of execution the slide brake has an L-shaped cross-section, an angular shape, i.e. two legs with an intermediate angel of preferable 90n intermediate angel of preferable 90° and preferable the slide brake is a sheet metal or plastic detail. The first leg of the slide brake is arranged to influences the cross-section of the slide groove whereby the slide brake interfere in the possible passage of the slipper in the subarea - a local constriction is obtained, and the second leg includes 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 that it is the slide brake that directly interferes in the cross-section and by that contacts the slipper at the passage, alternatively 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 the preferred form of execution 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 an fitted in position, transversally relative the slide groove, the friction is determined in the subarea, whereby an 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.
In a preferred form of execution the slide brake is displaceable transversally relative the extension of the slide groove, and hence the friction is adjustable in the subarea, by that the slide brake includes one or more notches, which are oblique and preferable 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 an 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 invention 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.
According to a further preferred form of execution the slide brake is transversally displaceable relative the extension of the slide groove, and by that the frictional force is adjustable in the subarea, by that the slide brake includes one or more notches, that are coordinated with one or more eccentric device, which preferable 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.
In a further preferred form of execution the slide brake comprises, wholly or partly, a flexible material, preferable 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/interfere furthermore on the cross-section of the slide groove, which means that the local constriction is increased in the subarea. The slide brake is preferable 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. Preferable the slide brake comprises at least one notch, through which notch, preferable a screw is 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, preferable a screw head, which is sufficient 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 preferable the notches are several whereby an increased flexibility is obtained. By that an adjustable braking force is obtained in the device according to the form of execution, which is missing in the older solutions and a continuously and accordingly an automatic disengageable airing blocking device is obtained.
In a further preferred form of execution the slide brake comprises two parts, a thin walled cower with preferable wedge-shaped lateral walls, and a wedge-shaped core, which core is displaceable 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 degree towards the slide groove. When the slide groove interfere 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 preferable 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 fixed arranged against the frame in a preferable tested position. By that the wedge-shaped core is displaceable arranged in the cover, inwards/outwards from the frame in the mounted position of the slide brake, the walls of the core influences the surrounding thin and wedge-shaped walls of the cover, in different degrees depending of 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 fixed 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 form of execution, which is missing in older solutions and a continuously and thus an automatic disengageable airing blocking device is obtained.
In a preferred form of execution the first leg of the slide brake comprises a conical cross-section and the slide brake is moreover displaceable 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 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 in either direct 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 according to the invention, 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.
In a preferred form of execution of the invention the slide brake comprises a toothed side, which is directed to the slide groove. Correspondingly the sipper also comprises, according to this form of execution, a toothed side, which in turn is directed towards the slide brake. Because the slide brake is arranged at the slide groove, in a tested position, booth toothings will cooperate and grip in 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. Preferable the slide brake is in this case an L-shaped, angular detail in plastic or sheet metal, according to earlier form of execution, 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 the preferred form of execution, 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

In detail represents in diametrical, partly schematic cross sections or perspective views:

Figure 1a shows a cross-section through the upper part of the frame construction with swinging arms assembly comprising an example of a slide brake.
Figure 1b shows a partial view of the location of the slide brake together with the slide groove and the upper assembly.
Figure 2a shows a cross-section through the upper part of the frame construction with swinging arms assembly comprising an example of a slide brake.
Figure 2b shows a detail view with a slide brake, arranged at the slide groove, and the upper assembly with its articulated attachment to the slipper.
Figure 2c shows a cross-section through the right lateral part of the frame, the slide groove, the slide rail, the slipper and the slide brake and also the upper assembly.
Figure 2d shows an enlarging of the position of the slide brake between the slide rail and the slide groove.
Figure 3a-d shows a form of execution of the slide brake, with lugs for attachment to the lateral parts of the frame.
Figure 4a-d shows an alternative form of execution of the slide brake, with lugs for attachment to the lateral parts of the frame.
Figure 5a-d shows a form of execution of the slide brake, with oblique notches for attachment and adjustable friction.
Figure 5e-g shows a form of execution of the slide brake, with eccentric devices for adjustable friction.
Figure 6a-c shows a form of execution of the slide brake, comprising an elastic material, making that an adjustable friction is obtained.
Fig 7a-d shows a form of execution of the slide brake, comprising two parts, one cover and one wedge-shaped core that is displaceable arranged in the cover, which cooperates for an adjustable friction.
Figure 8a-b shows a form of execution of the slide brake and the slipper, where those two parts comprises cooperating toothed sides for an adjustable friction.

The constructive design of the present invention is described by the subsequent detailed description of examples of execution of the invention referring to the accompanying figures showing a preferred, but not limiting, example of execution of the invention. In addition the invention brings the prior art further in the field in different aspects. This is realized in the present invention by that the arrangement of the below described art mainly is constituted in a way that is evident from the characterized part of claim 1.

Detailed description of the drawings

Figure 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 end of the upper part 8 of the casement an upper assembly is arranged, which upper assembly is articulated attached at a slipper 10. The slipper 10 is arranged to slide in a slide groove 7 which slide groove preferable 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, preferable 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 smooth. 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.
Figure 1b 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 preferable is fitted in between the one lateral wall of the slide rail 12 and the corresponding lateral wall of the slide groove 7, whereby an 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.
Figure 2a -b shows 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 fixed 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 compressed somewhat because the slide brake 11 according to the form of execution is designed as an L-shaped slide brake, whose first leg 13 is fitted in 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.
Fig 2c -d shows 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 form of execution 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 form of execution 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.
Figure 3a -d shows a form of execution of the slide brake 11, arranged at the slide groove 7.
In this form of execution the slide brake 11 is an angular shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferable with an angel of ca 90 degree between the legs. The first leg 13 is preferable 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, preferable inwards, to the lateral part 4 of the frame resulting that the slide brake 11 will be fixed 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 according to the invention, to make an individual selection of the size of the airing position possible.
Figure 4a -d shows a form of execution of the slide brake 11, provided at the slide groove 7. According to the form of execution the slide brake 11 is an angular shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferable with an angel of ca 90 degree between the legs. The first leg 13 is preferable 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 fixed 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. Preferable 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 according to the invention 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, according to the thought of the invention, be selected, whereby the friction is adapted to be the one that is desired for the application.
Figure 5a -d shows a form of execution of the slide brake 11, provided at the slide groove 7. Also in this form of execution the slide brake 11 is an angular shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferable with an angel of ca 90 degree between the legs. The first leg 13 is provided, preferable 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 preferable 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 according to the thought of the invention be selected, to make an individual selection of the size of the airing position possible
Figure 5e -g shows a form of execution much alike the one described in figure 5a-d. Also in this form of execution the slide brake 11 is an angular shaped sheet metal or plastic detail, comprising the two legs 13, 14, preferable with an angel of ca 90 degree between the legs. The first leg 13 is provided, preferable 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 according to the thought of the invention be selected, to make an individual selection of the size of the airing position possible
Figure 6a -c shows a form of execution of the slide brake 11, where this totally or partly comprises a flexible material, preferable rubber. The slide brake is according to this form of execution provided in a notch in the lateral part 4 of the frame, preferable 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. By the mounting the screws 26 are tightened with an adapted force and coordinated with the location this allows for the just sufficiently braking force. The braking force will be adjustable by that the screws 26 is tightened harder against the lateral part 4 of the frame, whereby the screw heads presses 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 an 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.
Figure 7a -d shows a form of execution of the slide brake 11, where this includes two parts, one thin walled cover 21 and a wedge shaped core 22., which core 22 is displaceable arranged in the cover 21. The slide brake 11 is arranged in a preferable 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 interfere 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 form of execution 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 fixed arranged against the frame 1 in a preferable tested position. By that the wedge shaped core 22 is displaceable 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 fixed 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 form of execution.
Figure 8a -b shows a form of execution of the slide brake 11, where this 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, booth 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, compare to the friction in other areas. Preferable the slide brake according to this form of execution 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 form of execution, 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 form of execution, whereby the position of the slide brake 11, transversally relative the slide groove 7, optional is determined in a way that a desired friction is obtained.

COMPONENT LIST

1: frame
2: lower part of the frame
3: upper part of the frame
4: lateral parts of the frame
5: casement
6: swinging arms assembly complete
7: slide groove
8: upper element of the casement
9: upper assembly
10: slipper
11: slide brake
12: slide rail
13: first leg
14: second leg
15: notch
16: eccentric device
17: notch
18: groove
19: notch
20: attachment
21: cover
22: core
23: lateral walls of the cover
24: notch
25: plane surface
26: screw
27: lug
28: chamfered end
29: notch
30: toothed side, slide brake
31: toothed side, slipper

Claims

Device for turnable windows, doors or shutters, which windows, doors or shutters consists of a frame (1), with one lower part (2), one upper part (3) and two lateral parts (4) in which lateral parts a casement (5) for instance a window casement, is pivoting suspended by two mirror symmetrical equal swinging arm assemblies (6), and where the lateral parts (4) of the frame each includes at least one slide groove (7), and where the top part (8) of the casement, at each respective short side includes one upper assembly (9), which respective upper assembly is articulately fixed at a slipper (10), which respective slipper is arranged to, with a certain friction, slide in the slide groove (7), characterized in that the friction is larger in at least one subarea, in the slide groove (7), compared to the friction in the other parts of the slide groove (7), by that the slide groove (7) comprises a constriction in the subarea.
Device according claim 1, characterized in that the location of the subarea, with its constriction, along the slide groove (7) can be selected, whereby the braked, partly opened position of the casement, its airing position, occurs in a desired opening area.
Device according claim 1 or 2, characterized in that the length of the subarea, with its constriction, can be selected, whereby the outermost positions of the braked, partly opened position of the casement (5), its airing position, accordingly can be selected.
Device according to any of the claims 1-3, characterized in that the constriction of the slide groove (7) includes a slide brake (11) which is provided in connection with the slide groove (7), and which slide brake (11) acts on the cross-section of the slide groove (7), whereby the constriction is obtained.
Device according claim 4, characterized in that the friction is adjustable in the subarea, by that the slide brake (11) is displaceable mainly transversal relative the extension of the slide groove (7), and acts accordingly on the cross-section of the slide groove (7), whereby the constriction of the cross-section of the slide groove in the subarea is increased or decreased.
Device according to any of the claims 4-5, characterized in that 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 attached to the lateral part (4) of the frame, and where its legs (13, 14) constitutes an L-shaped cross-section with an angel there between of preferable 90°.
Device according to any of the claims 4-6, characterized in that the friction is adjustable in the subarea, by that the slide brake (11) comprises at least one notch (19), which notch/notches is coordinated with at least one attachment (20) for anchoring of the slide brake (11) to the lateral part (4) of the frame, and which notch/notches are tilted and long and narrow, and by displacing the slide brake (11) in the direction of the extension of the slide groove (7), upwards in direction to the upper part (3) of the frame, or downwards in direction to the lower part (2) of the frame, the slide brake (11) is at the same time displaced transversally in direction to or from the slide groove (7), because of the tilted notches (19) and by that the slide brake (11) acts on the cross-section of the slide groove (7), whereby the constriction of the cross-section of the slide groove in the subarea is increased or is decreased.
Device according to any of the claims 4-6, characterized in that the friction is adjustable in the subarea, by that the slide brake (11) comprises at least one notch (15), which notch/notches is coordinated with at least one eccentric device (16), which preferable is used to attach the slide brake (11) to the lateral part (4) of the frame, and which eccentric device (16) is provided to displace the slide brake (11) transversally relative the extension of the gliding groove (7) by operating said eccentric device, and by that the slide brake (11) acts on the cross-section of the slide groove (7), whereby the constriction of the cross-section of the slide groove in the subarea is increased or is decreased.
Device according to claim 4, characterized in that the friction is adjustable in the subarea, by that the slide brake (11) comprises flexible material, preferable rubber, and that the slide brake is provided to be compressed in a selected degree, by that the slide brake (11) comprises a notch (17), through which notches attachments for the fastening of the slide brake (11) at the lateral parts (4) of the frame can be introduced, and that the attachments preferable are screws (26), whose corbelled- out upper part, presses on the plane end (25) of the slide brake, at the edges of the notches (17), whereby the slide brake (11) expands, more or less depending on the pressing force, and acts by that on the cross-section of the slide groove (7), whereby the constriction of the cross-section of the slide groove in the subarea is increased or is decreased.
Device according to claim 4, characterized in that the friction is adjustable in the subarea, by that the slide brake (11) comprises two parts, one cover (21) an one in the cover arranged wedge-shaped core (22), and that the lateral walls (23) of the cover are flexible, preferable thin-walled and wedge-shaped, and that the core (22) comprises notches (24), which notches preferable are arranged for the fastening of the slide brake (11) at the lateral parts (4) of the frame, and that the core (22) is displaceable arranged in the cover (21), and by movement of the core (22) in the cover (21), inwards or outwards relative the lateral parts (4) of the frame, the slide brake (11) expands transversally relative the slide groove (7), more or less depending of the position of the core (22) in the cover (21), and by that the slide brake (11) acts on the cross-section of the slide groove (7), whereby the constriction of the cross-section of the slide groove in the subarea is increased or is decreased.
Device according to claim 4 or 6, characterized in that the friction is adjustable in the subarea, by that the first leg (13) of the slide brake (11) has a conical cross-section and that the slide brake is displaceable in direction inwards and/or outwards relative the lateral parts (4) of the frame, and by 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 constriction of the cross-section of the slide groove in the subarea is increased or is decreased.
Device according to claim 4 or 6, characterized in that the slide brake (11) comprises a gear design (30) at that side that is directed towards the slide groove (7), and that the corresponding side of the slipper (10), which side is directed towards the slide brake (11), comprises a gear design (31), which gear design (31) is arranged to cooperate with the gear design (30) of the slide brake (11), whereby the friction is larger in the partial part, in the slide groove (7), compared to the friction in the other parts of the slide groove (7).