EP0340456B1 - Bearing for the checks of a tilting and turning window - Google Patents

Abstract

In order, in a scissor bearing, that is to say an upper rotary bearing, of a turn-and-tilt wing of a window or door, to make it possible to secure in its working position the removable bearing bolt on which the setting-out device is rotatably mounted, a securing element (13, 16) is attached to the basic body (1). It is mounted preferably rotatably on the basic body. In its working position, it engages over the bearing bolt (6), especially a head (15) of the latter, whilst in the release position it is located outside the range of movement or displacement of the bearing bolt. In addition, there can also be holding members (23, 25) which can fix the bearing bolt in its two exposed positions. The bearing is preferably of symmetrical design, so that it is suitable for right- hand and left-hand fitting. <IMAGE>

Description

The invention relates to a scissor-type bearing of a turn-tilt fitting, of the type described in the preamble of claim 1. It is normally attached to the upper axis-side corner of the frame. The deployment arm or an arm of a deployment scissors is rotatably articulated on this scissor stay bearing, the axle connection being established via the bearing pin.

Such a scissor stay is known from DE-A-2 623 140.

In order to be able to hang the wing in and out, the bearing pin must be detachable. Normally you pull it out of the scissor-type bearing completely or at least to the extent that the space between the two bearing bores is completely cleared. If you only pull the bearing pin out of one, preferably the lower, bearing hole, you have to ensure that it is held in its release position in a suitable manner. The advantage in the latter case is that the bearing pin always remains on the scissor bearing and it cannot be lost as a result.

The lower bearing point of the turn-tilt fitting is assigned to the lower axis-side corner of the frame. In the case of a turn-and-tilt sash of a window, a door or the like, it consists of a so-called corner bearing. Here, a bearing sleeve is attached on the wing side, which is pushed over a tiltable axle bolt on the frame.

The wing often has to be attached and detached several times during construction. For this reason, it is desirable that the bearing pin on the scissor bearing can be released in the simplest possible way. On the other hand, it should be held securely in its working position with the sash attached.

In the articulated connection according to DE-A-2 623 140, either a spring clip is attached to the articulation pin or to the base body. The spring extends into the range of motion of the bearing pin. To the Unhooking the wing you only have to push the spring back. Adequate securing is guaranteed with this leaf spring, but it is a sharp-edged component that can lead to injuries when cleaning.

In another known scissor stay one of the fastening screws for the base body is arranged so that its head protrudes into the area of the bearing pin so that it can only be moved when the screw is unscrewed. It is very disadvantageous that the fastening screw must be unscrewed to unhook the wing. On the one hand, it can easily get lost and, on the other hand, it is often no longer screwed in for convenience after the wing has been removed. In addition, a screw, for example in the case of a plastic or wooden frame, cannot be unscrewed and screwed in as often as desired.

The object of the invention is therefore to develop a scissor stay of the type described in the preamble of claim 1 so that the bearing pin is held securely and injury by the securing element is excluded, the coupling and uncoupling of the opening device as easy and quick as before should be possible.

To solve this problem, the invention proposes that the scissor bearing according to the preamble of claim 1 the characterizing part of this claim is formed. The use of a securing element, which, however, is not used for the eventual retention of the bearing pin in its release position, can reliably prevent the undesired displacement of the bearing pin. The securing element has at least two pronounced positions, namely a working position in which it projects into the displacement area of the bearing pin so that it cannot be moved, or at most only insignificantly, and a release position in which it is located so far outside the displacement area of the bearing pin. that it can neither prevent nor impair its displacement movement. So if you hang the sash and connect the opening device to this upper scissor stay by inserting or at least moving the bearing pin, you only need to transfer the securing element from its release position into its working position to hold the sash securely on the frame.

The or each securing element is rotatably mounted on the base body, the axis of rotation extending transversely to the axis of the bearing pin. As a result, the securing element is easily accessible and therefore easy to use. All you need is a hole in the body and a suitable protection against axial Moving the securing element.

A further development of the invention is characterized by a head of the securing element, the part of which protrudes into the displacement region of the bearing pin in the release position is removed. When the securing element is in its release position, the bearing pin can easily be moved sideways past the head of the securing element because it has been partially removed or shaped accordingly. However, if you turn the locking element, in particular by approx. 90 °, the remaining part of the head or the specially designed head now enters the range of motion of the bearing pin and blocks its displacement movement from the working position into the release position for the opening device. Instead of a laterally removed or specially shaped bearing pin head, an eccentric, axially projecting projection can also be provided on a correspondingly flatter head. The work and mode of operation is the same as described above.

In this sense, a further embodiment of the invention is formed, which is characterized by an axially projecting projection or head which is arranged eccentrically to the axis of rotation of the securing element and which is located in the release position outside the bearing pin displacement area and projects into the latter in the working or blocking position , where it directly overlaps the associated bolt end. This eccentrically attached head acts in the same way as an eccentric attachment on a head mounted concentrically to the shaft.

A further development of the invention is characterized in that the securing element is held in the manner of a rivet on the preferably plate-shaped base body so as to be rotatable but not displaceable. This securing element or these securing elements are characterized by a particularly simple construction and thus by robust behavior and low costs. In addition, the captivity is guaranteed.

Another preferred embodiment of the invention is characterized by an attachment or a receptacle for a turning tool, in particular a screw slot. This slot can also be used as an indicator for the positions of the securing element. For example, you can attach the slot so that it runs parallel to the geometric axis of the bearing pin in the release position and perpendicular to it in the locking position. If you want to use the recording in two ways, namely also to display the position, then a cross slot that is usable for adjustment without a special marking is not suitable.

A particularly important variant of the invention is characterized by a symmetrical configuration with respect to the center of the space between two bearing eyes having the bearing bores and the likewise symmetrical arrangement of two optionally usable securing elements, the bearing pin having a thickened head with which one of the securing elements in each case cooperates in his working position. In the normal case, the head is located at the upper end of the bearing pin and in this case the securing element located above or laterally above the bearing pin head is used to secure the pin.

A further development of the invention is characterized by a first holding member which engages in a notch or circumferential groove of the bearing bolt in its release position and thus secures it in its release position against undesired resetting into the working position. It is particularly advantageous if a second holding member is present, which engages in the notch or circumferential groove of the bearing bolt in its working position, the first holding member being latched to a second notch or circumferential groove of the bearing bolt. This bolt is locked both in its working and in its release position for the display device by two or such a holding member. However, because the locking should only take place with a comparatively small force in order to be able to easily overcome it when the bearing pin is loosened, one cannot reliably rely on these locking devices in the working position of the bearing pin, which is why the working position is additionally secured by a securing element.

It is particularly advantageous if the holding members are each held in a breakthrough or the like of the base body by frictional engagement and each has a resilient section, in particular a middle section, having. This resilient section makes it possible to disengage the bearing pin with a short jerk when the securing element is in the release position, each holding member evading laterally in a resilient manner. When the rear notch or circumferential groove in the pull-out direction of the bearing pin has arrived at the upper holding member, the latter springs into the notch or circumferential groove in a spring-elastic manner and thereby secures the raised position of the bearing pin.

Fig. 1

eine Vorderansicht des Scherenlagers bei ausgekuppelter Ausstellvorrichtung, teilweise vertikal geschnitten,

Fig. 2

eine Seitenansicht der Fig. 1, wiederum teilweise vertikal geschnitten,

Fig. 3

einen Schnitt gemäß der Linie III-III der Fig. 1,

Fig. 4

einen Teilschnitt gemäß der Linie IV-IV der Fig. 1 bei herausgenommenem Lagerbolzen mit in Freigabestellung befindlichem Sicherungselement,

Fig. 5

eine vergleichbare Darstellung mit in Arbeitsstellung befindlichem Sicherungselement,

Fig. 6

perspektivisch eine Darstellung des Scherenlagers mit gesichertem Lagerbolzen.

The invention is explained below with reference to the drawing. The drawing shows an embodiment of the invention. Here represent:

Fig. 1

2 shows a front view of the scissor stay bearing with the disengaging display device, partially cut vertically,

Fig. 2

2 shows a side view of FIG. 1, again partially cut vertically,

Fig. 3

2 shows a section along the line III-III of FIG. 1,

Fig. 4

2 shows a partial section along the line IV-IV of FIG. 1 with the bearing pin removed with the securing element in the release position,

Fig. 5

a comparable representation with the securing element in the working position,

Fig. 6

a perspective view of the scissor stay with a secured bearing pin.

The scissor-type bearing has a base body 1 designed as a bearing plate and two bearing eyes 2 and 3, each with a bearing bore 4 or 5. A bearing pin 6 can be inserted into these aligned bearing bores. The scissor bearing is designed symmetrically to a plane 7 extending perpendicular to the image plane. In order to be able to fasten it to a frame, it has at least one, but preferably two through bores 8 to 11 on both sides of this symmetry plane. A recess 12 on the side open to the edge is provided on the base body 1 between the two bearing eyes 2 and 3. This creates the necessary space for a bearing eye attached to the pivoted end of a raising arm or a raising device. The latter is also penetrated by the bearing pin 6 in its working position. The bearing pin 6 is secured in its working position shown in FIG. 6 by means of a securing element 13 against unintentional displacement in the direction of the arrow 14. In the opposite direction, the bearing pin can be held securely by a thickened head 15. Because of the symmetrical design of the scissor stay is symmetrical to level 7 below the open edge Recess 12 also a securing element 16 is provided. Both are rotatably supported about an axis extending perpendicular to the image plane in FIG. 1. From Fig. 4 it can be seen that each securing element consists of a shaft 17 and a head 18, the rear end of the shaft being permanently deformed to form a rivet head 19. However, the riveting is carried out in such a way that the securing element can be rotated about its axis 20. It can also be seen that the head 18 on its right side in FIG. 4 has been partially removed. As a result, the thickened head 15 of the bearing pin 6 can be moved as desired in the direction of the arrow 14 or in the opposite direction without hindrance by the securing element located in this rotational position (release position).

However, if one rotates the securing element from the release position assumed in FIG. 4 in the direction of arrow 21 (FIG. 6) by 90 °, the remaining head part arrives in the range of motion of the bolt head 15. It is preferably located directly above the bolt, so that this can no longer be moved in the direction of arrow 14. In order to ensure this protection against displacement, of course there is no need for a thickened head on the bearing pin, rather it is only important that the securing element is in its working position in the displacement area of the bearing pin. If, in the embodiment according to FIG. 6, the securing bolt is inserted from below, it can be secured against being pulled out against the arrow 14 by means of the lower securing element 16.

In order to be able to mount and unmount the opening device without having to completely remove the bearing pin, it is provided with a first circumferential groove 22 at its lower end in FIG. 1. If this is located within the upper bearing eye 2, a first holding member 23 located therein can snap into the groove 22. As a result, the bearing pin can then be securely locked in the raised release position shown in FIG. 2. However, the bearing pin is also equipped with a second circumferential groove 24, which is located in the area of the thickened head 15. The first holding element 23 engages in this in the working position of the bearing pin 6. A second holding member 25 on the lower bearing eye 3 snaps into the first circumferential groove 22 in the working position of the bearing pin. This guarantees the right and left usability of this scissor stay.

From Fig. 3 the shape of the holding members 23 and 25 can be seen in a plan view. They are made of resilient plastic and have an annular, resilient center piece 26. With this, it is held in place in an opening 27 by frictional engagement. An inner bar 28 forms the locking member, which can enter directly into the associated circumferential groove. A head piece 29 is housed flush in an external widening of the opening 27. In the sense of arrow 30, the holding member 23 or 25 cannot deflect even when it is snapped in and out because the head piece 29 is supported on the frame when the scissor bearing is mounted.

From Fig. 6 it can be seen that the thickened head 15 does not rest directly on the upper bearing eye 2, but with an underlying thickened shaft part and therefore has a certain distance from the bearing eye. You can reach into the gap 31 formed in this way with a blade of a screwdriver or another suitable tool and at least raise the bearing bolt by lever action or simply by exerting a pressure force on the lower edge of the thickened head 15 so that it comes out of the holding members 23 and 25 disengages, if there are any. Then you can easily pull it up to the position shown in Fig. 2 by hand.

The securing elements 13 and 16 are also important in the case of a scissor bearing that no holding members 23, 25 or at least no holding member for the raised bearing pin 6, i. H. they also secure a bearing pin, which is basically completely removed to unhook the opening device.

It remains to be added that a slot-shaped receptacle 32, in particular, on the head 18 of the securing element 13, 16, whose rotation is made possible with the aid of a suitable tool, for example a screwdriver, and which can also take over the function of a display device which, depending on the rotational position, can be in the release position or Working position of the securing element clarified.

Claims (9)

1. Scissor-type bearing of a turning and tilting fitting with two bearing bores (4, 5) which are disposed at a distance from one another in a base member (1), and between which a bearing lug or the like engages the opening device, wherein in its operating position, a bearing pin (6) engages in the bearing bores (4, 5) and in the bearing lug, whereas it is retained in only one bearing bore (4) in an inset or projecting position of the opening device, and the gap between the bearing bores (4, 5) is opened up, and there is mounted at least one adjustable safety element (13, 16) on the base member (1) of the scissor-type bearing, which in the operating position thereof projects into the displacement area of the bearing pin (6), characterised in that the safety element or each safety element (13, 16) is disposed rotatably on the base member (1), the rotational shaft (20) extending transversely to the bearing pin axis, and in that in its released position, the safety element (13, 16) is disposed outside the displacement area of the bearing pin (6).
2. Scissor-type bearing according to Claim 1, characterised by a head (18) of the safety element (13, 16) of which the part projecting part into the displacement area of the bearing pin (6), in the released position is at a distance.
3. Scissor-type bearing according to Claim 1, characterised by an axially projecting attachment or head which is disposed eccentrically relative to the rotational shaft (20) of the safety element (13, 16), and in the released position is positioned outside the bearing pin displacement area, and which in the working or locking position projects into the latter, in such a manner that it overlaps directly the associated pin end (15).
4. Scissor-type bearing according to at least one of Claims 1 to 3, characterised in that the safety element (13, 16) is retained rotatably but not displaceably in the manner of a rivet on the base member (1) which is preferably in plate form.
5. Scissor-type bearing according to Claim 4, characterised by an attachment or a seat (32) for a rotary tool, in particular a screw slot.
6. Scissor-type bearing according to at least one of the preceding claims, characterised by a formation symmetrical to the mid-point of the space between two bearing lugs (2, 3) comprising the bearing holes (4, 5), and by the likewise symmetrical arrangement of two optionally usable safety elements (13, 16), the bearing pin (6) having an enlarged head (15), with which one of the safety elements (13, 16) co-operates at a time.
7. Scissor-type bearing according to at least one of the preceding claims, characterised by a first retention device (23) which engages in a notch or peripheral groove (22) of the bearing pin (6) in the released position thereof.
8. Scissor-type bearing according to Claim 7, characterised by a second retention device (25) which engages in the notch or peripheral groove (22) of the bearing pin (6) in the released position thereof, that the first retention device (23) thus engaging with a second notch or peripheral groove (24) of the bearing pin (6).
9. Scissor-type bearing according to Claim 7 or 8, characterised in that the retention devices (23, 25) are each held in an aperture (27) or the like of the base member (1) by means of friction, and each has a spring part, in particular the central part (26).

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