SK9302003A3 - Fitting for a window or a door and a method for producing a closing journal - Google Patents

Abstract

A fitting for a window or a door is disclosed on which a closing journal (1) with a locking projection (5) is provided. The closing journal (1) forms, via the locking projection (5), an undercut (8) that should engage under the undercut area of a detent engagement. In order to simplify the production of the closing journal (1), the closing journal (1) should be comprised of a T-shaped head (20) and of a fastening base (21), which are welded to one another at a joining point (24). A method for producing a closing journal (1) is also disclosed.

Description

Technical field

BACKGROUND OF THE INVENTION The invention relates to a fitting for a window or door with at least one movable moving rod on which at least one locking bolt and / or securing counterpart is fastened, the closing bolt extending from the wing or frame rebate to the wing plane and the closing bolt the locking bolt is provided with a locking projection forming an undercut on the closing bolt and engaging at least in the closing position behind the undercut region on the locking supporting mat. The invention further relates to a method of manufacturing a closure bolt with a locking protrusion expanded relative to a shank that forms an undercut on the closure pin to engage the undercut region behind the securing counterpart, and which comprises a mounting foot piece for connection to a fitting portion.

BACKGROUND OF THE INVENTION

Closing pins which are formed as so-called mushroom-head pins and which are provided at their end with an undercut protrusion with which the undercut region of the locking counterpart can be engaged with one another at least in the closing position have long been known. For example, DE-GM 84 02 163 discloses a fitting in which a mushroom-head bolt is mounted on a movable movable rod. The bolt with the mushroom head is captured in the locking position into a supporting counterpart having a substantially double C-shaped cross-section. This creates an undercut region in the supporting counterpart, while the facing ends of the double C-section create an opening with which the tapered shank is aligned. mushroom head. On the one hand, the closure pin is supported by the shank

162 / B on the counterpart and, on the other hand, it is difficult to remove the closure pin from the closure part, for example when it breaks.

The prior art method of manufacturing such locking pins consists in chip machining, leaving only the extended locking projection from the original diameter. The locking pin is required both in the region of the shank, which is designed to be substantially longer, and in the region of the fastening five-piece which, according to DE-GM 84 02 163, passes through the support rod in the longitudinal bore and is fixed in a movable sliding bar in a narrowing manner, that is, to be chipped.

Other manufacturing processes have already been tried, such as cold forming from wire. However, it is not possible to produce constrictions and similar formations, or they can be produced only with great expense.

Further production variants result from, for example, DE 199 12 220 A1, DE 199 16 940 A1, DE 199 20 832 A1 or DE 197 15 055 A1.

In all of these solutions, the expanded locking projection is formed as a sleeve-like sleeve that is screwed onto the thread of the mounting foot piece. The reason for this is, in particular, the desired adaptability of the closing pin in the axial direction, so that over time the varying distance of the sash rebate from the frame rebate can be compensated by means of adjustment.

A disadvantage of the above-mentioned closure pin according to DE-GM 84 02 163 is that the machining of the closure pin requires extensive machining. The latter examples are also relatively laborious, in particular because two thread cutting operations must be carried out on the sleeve sleeves and on the fixing foot pieces and that the sleeves must be secured against rotation.

In addition, the requirements for the locking pin in terms of wear resistance and workability are opposed. In fact, it is required that the surface of the closure pin should be as hard as possible, so that the shank and the locking protrusion are inserted into the supporting counterpart.

162 / B, but on the other hand, the fixing foot piece must remain plastically deformable, for example, in order to be able to carry out a riveting operation with a moving rod or the like.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION The object of the present invention is to provide a fitting in which the production of the closure pin is simplified.

The aforementioned object is achieved in that the closing pin consists of a T-shaped head and a fixing foot piece, which are welded together at a connection point, preferably by laser welding.

The invention further provides a method for producing a closure pin of the aforementioned type, which is characterized in that the shank forms a T-shaped head with a locking projection, which is connected to the fixing foot piece by means of a welding process, preferably laser welding.

The invention is based on the recognition that, although production seems to be more laborious at first, since a further working step is required, the closure pin components can be manufactured in this way simply, for example by cold forming, and inexpensively.

In particular, the laser welding connection permits, in addition to a large number of pieces, a high degree of precision of the connection and also offers the advantage that relatively small components can be automatically handled in devices intended for this purpose.

It is particularly advantageous in this case in which the mounting foot and the head consist of metal bodies of different alloys and / or with different heat treatments. Thus, for example, the mounting requirement can be fulfilled in that the fastening bead is, unlike the head, made of an easily deformable alloy and the head is made of a more wear-resistant metal alloy or is prepared, for example, by heat treatment,

162 / B

Thus, according to a further embodiment of the invention, the fastening bead piece can be connected to the moving rod by means of a thread connection.

In order to maximize the hardness of the wear head, the head can be hardened by hardening and hardening.

In order to simplify the connection of the head to the mounting foot piece, it is further proposed that the connection point comprises a recess in the mounting foot piece and an additionally shaped projection on the head. As a result, the assignment of parts in the device can be substantially simplified. The recess permits substantially only one position of the complementary protrusion, so that in each case a relative alignment of the T-shaped head to the fixing foot piece is achieved.

It is also advantageous if the recess is formed in the expanded flange of the five piece. On the one hand, the extended flange can be supported on a movable (sliding) bar on a sliding bar longitudinally displaceable beneath the support bar, and moreover, the extended flange can be better manipulated with the mounting foot piece, especially when making a connection.

In this case, it is particularly advantageous if the extended flange forms a tool engagement means by means of which the flange can be rotated relative to the eccentrically mounted fastening pin. Thus, the fastening bolt, supported by its bead piece, in the bore of, for example, a moving rod, is held in rotation about its axis so that the flange is moved relative to the fastening bolt according to the eccentric offset together with the locking projection. By adjusting the engagement of the tool on the flange of the fifth piece, a corresponding rotational movement at the coupling point is avoided so that torsional forces are prevented from occurring there.

According to a preferred embodiment of the connection point in particular, the projection is connected to a tapered T-shaped head shaft. This makes the projection easy to manufacture and promotes the production of a T-shaped head as a cold-formed product.

162 / B

Furthermore, the production of a closure bolt, which is expedient because it is simple and inexpensive, is made possible by the connection of T-shaped fittings of different sizes with corresponding studs adapted for this purpose and adapted to the fittings.

The invention further provides a method of manufacturing a closure pin with a locking projection extended relative to a shank which forms an undercut on the closure pin to engage the undercut region on the locking support counterpart, and which comprises a fastening foot piece for connection to the fitting element. with a locking projection, a T-shaped head, which is connected to the mounting foot piece by means of laser welding.

Particularly advantageous here is the hardening process of the T-shaped head, preceding the joining process of the fixing foot piece and the T-shaped head. This structural change, caused, for example, by cementing with subsequent quenching, has a positive effect on the wear resistance of the head. the advantageous hardening and hardening hardening does not adversely affect the connection with the fixing foot piece.

BRIEF DESCRIPTION OF THE DRAWINGS

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The invention is explained in more detail below with reference to the accompanying drawings, in which: FIGS. 1 to 3 illustrate various cases of fittings with a locking pin; FIG. 4 manufacturing a locking pin consisting of two individual components; The pin according to FIG.

162 / B

DETAILED DESCRIPTION OF THE INVENTION

In the fitting shown in FIG. 1, the locking pin 1 is mounted on the movable (sliding) bar 2 and passes through a support bar 3 with an elongated hole 4. The locking pin 1 has a mushroom shape and is provided with a locking projection 5 to which the tapered shaft 6 is supplied. which, in the illustrated embodiment, has a cylindrical cross-section. The shank 6 terminates in a flange 7 forming a support for the tool (tool engagement means), thereby making it a hexagon. The flange 7 is dimensioned larger than the width of the elongated hole 4 extending perpendicular to the plane of the drawing, so that the flange 7 rests at the edges of the elongated hole 4. The flange 7 is aligned coaxially with the stem 6 due to the tapered shaft 6 and the cylindrical locking The first pin 9 is fed to the flange and further tapered to the pin 10, which are coaxially aligned with each other, but eccentric with respect to the flange 7 and the cylindrical locking projection 5. The pin 9 is adapted to the width of the elongated one. The pin 10 is pegged by a riveting process so that it is rotatably mounted relative to the support rod 3 and the push rod 2.

As a result, the entire closure bolt 1 can, as required, be moved with its axis 13 closer to the edge of the supporting counterpart as it moves around the central axis 12, or can be moved away from it. This adjusts the wing pressure on the frame.

In the closure pin 1 shown in FIG. 2 and 3, the principle construction corresponds to the closure pin 1 shown in FIG. In these cases, differently shaped and dimensioned pins 14, 15 are fed to pin 9 for other parts of the fitting, for example transmission parts, to ensure bridging of the guide channel 16 lying between the sliding bar 2 and the support bar 3. In the guide channel 16 there are the flexible transmission elements 17, the ends of which are connected to the sliding bar 2 via a pin 14. In the embodiment shown in FIG. 3, a special thread 18 is incorporated for this purpose and a pin 15 is therefore required

162 / B can only be adjusted according to the greater distance of the push rod 2 from the support rod 3 or the flange 7.

The closure bolt 1 is produced by assembling the T-shaped head 20 and the fastening five-piece piece 21, as shown in FIG. 4. The head 20 in the illustrated embodiment has a cylindrical shape and comprises at one end a locking protrusion 5 which extends into a tapered shank 6. A conical projection 22 is formed at the end of the shank 6, which is formed in addition to the recess 23 of the fixing foot piece 21. 22 and the recess 23 together form a connection point 24 in which the T-shaped head 20 and the mounting foot piece 21 are welded together to form a closure pin.

The recess 23 is in this case formed to the flange 7, so that the connection points 24 lie substantially in the region of the extended area of the component. This makes it easier to dissipate the heat generated during welding and, on the other hand, to interfere with the pins 9, 10 lying underneath the flange. Furthermore, the flange 7, shaped as a tool engagement means, allows the mounting foot piece 21 to be placed in a corresponding device, so that the entire welding process, which is preferably to be performed by laser welding, can take place automatically. Corresponding laser welding is therefore particularly advantageous because, on the one hand, the parts to be joined have relatively small dimensions and only a small and locally limited weld area is available, and on the other hand, the thermal influence of the whole component can also be reduced.

By providing a support for the tool (engagement means) on the flange 7, in particular in conjunction with the arrangement of the coupling point 24 (FIG. 5), the possible torque exerted on the coupling point is prevented as would occur if the tool engagement occurs in the region of the locking projection.

5. Welded joints are generally particularly sensitive to such torsional stresses.

By forming the head 20 as a T-shaped cylindrical rivet, the head 20 can be formed by cold extrusion. This may occur in the same way for the fixing foot piece 21, but preferably the head 20 and the fixing foot piece 21 are made of different materials or may be prepared by different heat treatments. Without that

162 / B weakened the connection between the head 20 and the mounting foot piece 21. For example, the head 20 of a wear-resistant alloy may be selected, while the mounting foot piece 21, on the other hand, has a material choice favorably affecting plastic deformation to form the rivet head shown Fig. 1 to 3.

In practice, however, it has been shown, for example, that cementing and quenching of the head 20 will substantially increase its wear resistance, while still maintaining the weldability.

Indeed, in the weld region, a carbon enrichment set on the head 20 and a normal carbon distribution in the fixing five-piece 21 form a mixed structure which contains only minor or small inclusions. This is also supported by the fact that cementation and quenching only enriches with carbon on the surface.

Another advantage is evident from the fact that all the applications shown in FIG. To this end, it is only necessary to produce the flanges 7 according to the different arrangements according to FIG. Conversely, it is naturally also possible to combine the head 20 according to different fields of application, for example in length or other dimensions, and possibly even with fastening five-piece pieces 21 with a shape different from the cylindrical shape.

The corresponding method of manufacturing the closure bolt 1 would therefore comprise essentially a connection of the T-shaped head 20 and the fixing foot piece 21 by a welding process, preferably by laser welding.

In order to improve the mechanical properties of the portions of the closure bolt 1 which are in effective connection with the securing counterpart, the T-shaped head 20 can be preceded by the above-mentioned method.

As can be seen from FIG. 5, the connection point 24 in the illustrated embodiment is in the region of the flange 7.

In order to keep the load of the coupling point 24 as small as possible, for example by applying a transverse force in the direction of the arrow 25 or perpendicular

162 / B to the plane of the drawing, the depression 23 or the protrusion 22 may be provided with a section which transmits the tilting forces to the other part in a positive fit. For this purpose, the projection 22 has to be provided with an outwardly extending cylindrical section which abuts on the step depressed 23. This would initially support the cylindrical projection with a transverse load in the direction 25 and the coupling point 24 would initially only be subjected to tension.

Finally, it should be pointed out that the illustrated embodiment on the basis of the cylindrical closing bolt 1 can of course also be transferred to other forms of locking bolts. Of course, it is also possible to use other welding processes that achieve the same result instead of the preferred laser welding here.

In addition to the production of the locking bolt, the described method can also be used for other parts of the fittings. Thus, for example, hinge pins may be envisaged with different cross-sections and different alloys and / or heat treatments. The pin regions forming the hinge surfaces must be designed to be wear resistant and must be designed with surface requirements, while the pin mounting and fastening regions may also have different cross-sections and cross-sectional shapes. As a rule, these regions can also be more simply shaped in terms of surface.

The corner bearings of the opening and tilting fittings comprise, for example, a U-shaped fork or a loop through which the bolt can be associated with the adjusting screw of the corner bearing, next to the hinge section itself. In this case, the cylindrical section of the hinge and the fork or lug can be manufactured and heat treated separately and then joined together.

Claims (9)

PATENT CLAIMS Fitting for a window or door with at least one movable movable rod (2) on which at least one locking bolt (1) and / or a securing counterpart is fastened, the locking bolt (1) extending from the sash rebate or frame to the plane of the sash and in the closing position of the moving rod (2), the closing bolt is gripped by a retaining counterpart mounted on the rebate of the frame or leaf, the closing bolt (1) being provided with a locking projection (5) forming an undercut on the closing bolt (1) and position behind the undercut area on the locking support counter, characterized in that the closing bolt (1) consists of a T-shaped head (20) and a fixing foot piece (21) welded to each other at the connection point (24), advantage by laser welding. Fitting according to claim 1, characterized in that the fastening foot piece (21) and the head (20) are made of metal bodies of different alloys and / or with different heat treatments. Fitting according to claim 2, characterized in that the fixing foot piece (21) is substantially easier to deform than the head (20), wherein the fixing foot piece (21) is associated with the sliding bar (2) by means of a thread connection. Fitting according to any one of claims 1 to 3, characterized in that the head (20) is cemented and hardened. A fitting according to any one of claims 1 to 4, characterized in that the connection point (24) consists of a recess (23) in the mounting foot piece (21) and a projection (22) additionally formed on it on the head (20). 32,162 / B Fitting according to claim 5, characterized in that the depression (23) is formed in an enlarged flange (7). Fitting according to claim 5 or 6, characterized in that the projection (22) is connected to the tapered shaft (6) of the T-shaped head (20). Method for producing a closure bolt (1) with a locking protrusion expanded relative to the shank (6), which forms an undercut (8) on the closure bolt (1) to engage the undercut region behind the securing counterpart, and which comprises a fastening bead piece (21) for connection to a fitting element (2,3), characterized in that the shank (6) forms a T-shaped head (20) with the locking projection, which is connected to the fastening means by a welding process, preferably by laser welding. a foot piece (21). Method according to claim 8, characterized by a pre-hardening step of the T-shaped head (20).