EP0504144B1 - Lock housing with flange for fitting in an aperture in a thin wall like a sheet metal cupboard door or sheet metal casing cover - Google Patents

Abstract

The description relates to a lock housing (111) with a flange, central part and rear for fitting in an aperture (28) in a thin wall, like a sheet metal cupboard door (26) or a sheet metal casing cover, in which the housing (111) is held by means of a spring or springs (46, 146) bearing on the aperture side or rear surface (42) of the thin wall (26) after the rear (68) and central part have been inserted through the aperture (28) as far as the flange (30) and the spring(s) (46) bearing on the aperture side or rear of the thin wall start(s) from the central part of the housing near its end or from the end of the lock housing and is/are rigidly secured axially to the housing (111). According to the invention, the aperture (28) in the thin wall (26) is round or has mutually staggered chord-shaped narrowings and the outer contour of the housing (111) is round or has flattened parts (38) corresponding to the narrowings. The surface of the housing (10) stands back (in the regions between the flattened parts if present) and thus on its outer surfaces forms axial grooves from which the spring(s) start(s). Where the flattened parts (38) are provided, these springs are arranged in their region and the housing (111) forms a recess (72) in the region of two opposite flattened parts (38) for one of the springs (46) starting from the end of the housing (78).

Description

TECHNICAL AREA

The invention relates to a closure housing with flange, middle part and rear end for mounting in an opening in a thin wall, such as a sheet metal cabinet door or sheet metal housing cover, the housing being connected to the opening edge or to the flange by means of one after the rear end and the middle part have been pushed through the opening to the flange The rear surface of the thin wall engaging spring or springs is held, and wherein the spring or springs engaging the breakthrough edge or rear surface of the thin wall extends from the outer surface of the central part of the housing near the rear end or from the rear end of the closure and with the housing is axially fixed, wherein the opening in the thin wall is round with radially offset tendon-like constrictions, and wherein the cross-sectional profile of the central part of the housing is round with flats corresponding to the tendon-like constrictions, and wherein the outer surface of the central part of the Ge housing (possibly in the areas between the flats) has at least one depression.

Such a closure housing are often part of a lock that can be mounted in an electrically conductive thin wall, such as a control cabinet door, such as a cam lock, the closure housing or the closure being connected to the opening of the electrically conductive thin wall by means of grounding and / or fastening springs, such as Control cabinet door made of sheet steel or the like, can be fastened, whereby, if necessary, an electrical connection between the electrically conductive wall and spring on the one hand and spring and lock housing or locking shaft mounted therein (or other movable part of the lock, which receives and carries part of the key) on the other hand is.

STATE OF THE ART

A housing of this type is already known from EP-A-0 258 491, further reference is made to EP-A-0 025 478 and EP-A-0 025 472. Furthermore, the applicant is aware of a sash lock for a sheet metal cabinet door, in which the screw holding the sash tongue also holds a U-shaped spring, which rests with the free ends of its legs on the rear surface of the door leaf and thereby holds the housing in the opening . The latter arrangement can be assembled in that the cam lock can be attached to the flange by simply pushing the housing into the door lock opening without the hassle of screwing on nuts or pushing on fastening springs behind the door leaf, similarly as in EP-A-0 258 491 is known. In EP-A-0 025 478, on the other hand, the fastening of the closure housing is only possible in that a fastening spring is inserted into a corresponding circumferential groove of the housing on the back of the wall after the housing has been inserted.

Incidentally, such fasteners have so far mostly worked with screw fastening, which makes it necessary, after the housing has been pushed through the wall opening, to attach the fastening nut from behind and then screw it tight. This has the disadvantage that, as with fastening by means of a plug-in spring, a special, component separate from the housing is required, which can also be lost. In addition, blind fastening is not possible in cases in which the rear of the wall is difficult to access.

With a blind fastening according to the closure known to the inventor, this disadvantage does not exist, but the closure known to the inventor still has the disadvantage that the fastening spring transfers its pressure load to the bearing of the sash tongue and thereby leads to undesirably high friction and aggravation of the closing process. Better in this regard is EP-A-0 025 478, in which the rear of the wall also does not need to be accessible in order to mount the closure housing, since the springs attached to the housing move behind the housing after the housing has been inserted through the wall opening Lay on the wall and lock the housing. In addition, there is no stress on the sash axis because the fastening forces are transmitted directly to the breech housing.

However, the construction known from EP-A-0 258 491 apparently requires a breakthrough that differs from the usual breakthrough (round hole with at most two or four usual flats serving to prevent rotation). FIG. 4 of this document shows a breakthrough with additional recesses 31 provided in the area of two flattenings. The further embodiments of this document (see FIGS. 9, 13) also require closures which increase the manufacturing costs and the compatibility of closures already on the market disruptive additional recesses. In the embodiments according to FIGS. 5 and 6, it appears that no breakthroughs deviating from the round shape are required, but this is not a closure housing itself, but sleeves, the housing of this type should record. This results in side openings necessary for holding the closure housing, which lead to tightness problems if the arrangement is to be used in a sheet metal cabinet or sheet metal housing to be sealed.

A closure with a grounding and / or fastening spring in the form of a cam lock is already known from European patent publication 0 025 472. The disadvantage here is that to fasten the closure in the sheet metal wall, a spring which is separate from the closure housing and is U-shaped in plan view after the closure has been pushed through from the front through the sheet metal wall opening from behind must be pushed onto the housing provided with lateral grooves in order to complete the fastening process and accomplish the grounding process.

However, blind assembly of such a closure is also desirable here. Also, the known closure is not sufficiently vibration-proof in some cases, i. that is, when the vibration is strong, the inserted spring moves away from its inserted position and the lock is released.

PRESENTATION OF THE INVENTION

The object of the invention is to improve the construction known from the prior art in such a way that without additional recesses in the opening in the thin wall and without openings in the peripheral region of the housing, the closure housing can be mounted in the thin wall by simply pushing in and latching. If necessary, there should also be sufficient ground contact between the handle or key of the lock and z. B. the sheet metal wall can also be supplied if the closure housing is made of a non-conductive plastic instead of metal, like polyamide.

According to the invention, the object is achieved according to two different embodiments. According to claim 1, the closure housing is characterized in that axially aligned grooves are provided on the outer surface of the central part of the housing, which form depressions for the springs to receive them when the housing is pushed through, the springs or springs in each case from and along one side wall these grooves extend, the tongue along the groove forming a cross-section growing in the direction of the flange, and in that the outer surface of the tongue, starting from the rear of the cylindrical central part, extends seamlessly at an acute angle to the central axis of the housing in the direction of the flange of the Central axis removed.

In this embodiment, the cross section increasing in the direction of the front end of the housing can be triangular, semicircular or semi-oval-shaped and can grow from a smaller value at the rear end of the housing to a maximum value on the free end face of the spring. The end of the spring which rests against the door leaf when the housing is in the working position can form an outward-facing bevel.

According to another alternative (claim 2), the closure is characterized in that the spring or springs are arranged in the flats, and the outer surface of the central part of the housing in two opposing flats, a receiving space for one near or from the rear end of the housing outgoing spring for receiving them when pushing through the housing, the spring being V-shaped in cross section and the V tip facing the receiving space and being able to be supported on the surface formed by the receiving space, and in that the outer surface of the spring extends from the rear of the cylindrical center part starting seamlessly at an acute angle to the central axis of the housing in the direction of the flange from the central axis.

The from V-cross section enclosed angle (α) decreases from 180 ° at the fastening end to 170 ... 150 °, preferably to 165 ° towards the free end. The springs can originate from an end region of the housing which at the same time has an annular groove or ring incision (for a stop lug emanating from a sash).

The springs extending from the housing can be injection-molded in one piece from plastic, in particular polyamide. However, the spring can also be a metal part which is axially rigidly connected to the housing, the metal preferably being spring metal, such as steel. The housing can also be injection-molded from a metal, such as die-cast zinc, or it can also consist of plastic. This spring made of metal can be U-shaped or cup-shaped, so that the spring with the U-web or the cup base engages around the rear end of the housing, is axially supported at the rear end or near the rear end and with the U-leg ends or cup edges is supported on the other side of the thin wall. The U-legs of the spring U-shaped in side view are preferably arranged in the area of the flats. The cup wall of the cup-shaped spring, on the other hand, consists of four legs, each offset by 90 ° from one another, the legs each lying in the area of a flattened housing. The spring can be held by a projection or slug extending from the housing, or the spring is held by recesses on the peripheral surface of the housing. Alternatively, the spring can be held by a spring part with end hooks extending through the sheet metal wall opening. The spring can also be held by a disc placed on the end face of the housing. Recesses are provided in the housing wall for receiving spring parts projecting in the idle state. Manufactures Such a spring which can be fastened to the closure is formed, for example, by first forming a blank of the spring from sheet steel with simultaneous formation of openings, eyes, edges and / or bends, that the spring blank is then hardened and finally the spring is plugged onto the housing of the closure . After the latter process, the spring could be fixed to the housing by a part that can be firmly connected to the housing or that can be connected to parts that emerge from the housing (such as a shaft, tongue). The fixation can be done by gluing or pressing tongue and groove devices on the parts to be fixed together. However, the fixation can also be carried out by wide pressing (in the case of plastic, possibly using heat) of housing projections guided through openings in the spring.

If an earth contact is to be achieved, the spring is designed in such a way that at least one rough or sharp edge of the spring scrapes when the housing carrying the spring is inserted through the wall opening in the wall opening and / or along the edge between the wall opening and the rear wall surface and after reaching the End position, in which the flange rests on the wall front surface, on the areas of the z. B. existing steel sheet wall bare metallic parts of the spring under pressure, and that the spring with the housing (if electrically conductive) and / or an electrically conductive, stored in the housing, the key or the like. Receiving or carrying part, such as a locking shaft or cylinder.

The spring is preferably bent (in particular U-shaped or cup-shaped) in such a way that it is axially supported at the rear end or near the rear end of the housing and if necessary, the rear end with the U-web or the cup bottom. of the housing and with the spring ends, such as with the U-leg ends or the cup edge on the other side of the sheet metal wall such. B. the door leaf or the like. Is supported and also designed so that it produces the electrical connection between an electrically conductive, movable part of the closure, such as the actuating shaft, and the U-web or the cup bottom of the spring.

Further refinements are taught in further subclaims. It is of particular importance that the spring should, if possible, be designed in such a way that it does not exert any particular load in the axial direction on the closing core, so that the closing core actuation is not unnecessarily complicated by the axial pressure to be absorbed.

BRIEF DESCRIPTION OF THE INVENTION

The invention is explained in more detail below on the basis of exemplary embodiments which are illustrated in the figures:

Fig. 1

in einer teilweise geschnittenen Seitenansicht eine erste Ausführungsform eines erfindungsgemäß ausgestalteten Gehäuses;

Fig. 2

eine Ansicht von rechts auf das in Fig. 1 dargestellte Gehäuse;

Fig. 3

eine Ansicht von hinten auf das in Fig. 1 dargestellte Gehäuse

Fig. 4

eine Schnittansicht entlang der Schnittlinie IV-IV der Fig. 1;

Fig. 5

eine andere Ausführungsform des erfindungsgemäßen Gehäuses in einer Seitenansicht;

Fig. 6

eine gegenüber Fig. 5 um 45° gedrehte Seitenansicht des Gehäuses der Fig. 5;

Fig. 7

das Gehäuse gemaß Fig. 6 in einer Ansicht von hinten;

Fig. 8

eine gegenüber der Fig. 6 um 45° gedrehte Seitenansicht des Gehäuses der Fig. 6;

Fig. 9

in einer Seitenansicht einen in einem Türblatt montierten Vorreiberverschluß, bei dem das Gehäuse mittels einer U-förmigen, vom Gehäuse getrennten Steckfeder oder wahlweise mit einer Befestigungsmutter befestigbar ist;

Fig. 10

in einer Seitenansicht einen sogenannten Vierteldrehverschluß mit Querstift, bei dem eine Gehäuseform ähnlich der der Fig. 1 zur Anwendung gelangt ist;

Fig. 10A

den für den Querstift erforderlichen Durchbruch in der Türzarge;

Fig. 11

in einer ähnlichen Ansicht wie Fig. 10 einen Vierteldrehverschluß gemäß einer noch anderen Ausführungsform, bei dem das Gehäuse eine Form besitzt, die der der Fig. 6 ähnlich ist, wobei die Ausführungsformen der Fig. 10 und 11 wegen ihrer Zentralbelastung für erfindungsgemäß ausgestaltete Gehäuse besonders günstig sind;

Fig. 12 und 13

in einer Seitenansicht und einer Ansicht von hinten ebenfalls einen in einen Blechwanddurchbruch blind einsteckbaren Vorreiberverschluß mit einer in Seitenansicht U-förmigen, von vom Gehäuse ausgehenden Vorsprüngen gehaltenen Befestigungsfeder;

Fig. 14

die Form des zu dem Gehäuse gemäß den Fig. 12 und 13 passenden Durchbruchs in einer Blechwand;

Fig. 15 und 16

in einer Seitenansicht und in einer Ansicht von hinten eine Ausführungsform eines Gehäuses, das bei dem Verschluß gemäß Fig. 12 und 13 verwendbar ist;

Fig. 17 und 18

in einer Seitenansicht und in einer Ansicht von hinten eine zugehörige Feder;

Fig. 19 und 20

in ähnlichen Ansichten wie die Fig. 15 und 16 eine andere Ausführungsform eines Gehäuses für den Verschluß gemäß Fig. 12 und 13;

Fig. 21 und 22

in ähnlichen Ansichten wie die Fig. 17 und 18 eine entsprechend gesteltete Feder für das Gehäuse gemäß Fig. 19 und 20;

Fig. 23

in vergrößerter Darstellung die Art der Befestigung durch die Feder gemäß Fig. 17 und 18;

Fig. 24, 25 und 26

in einer Seitenansicht, teilweise geschnittener Seitenansicht und in einer Ansicht von hinten eine andere Ausführungsform eines Gehäuses;

Fig. 27, 28 und 29

in zwei Seitenansichten und in einer Ansicht von hinten eine zugehörige Feder;

Fig. 30, 31 und 32

in ähnlichen Ansichten wie bei den Fig. 24, 25 und 26 eine noch andere Ausführungsform des Gehäuses;

Fig. 33, 34 und 35

in ähnlichen Ansichten wie die Fig. 27, 28 und 29 eine zugehörige Feder;

Fig. 36, 37 und 38

eine Seitenansicht, eine Ansicht von hinten und eine axiale Schnittansicht eines noch anderen federbefestigten Verschlusses;

Fig. 39

den zugehörigen Blechwanddurchbruch;

Fig. 40, 41 und 42

in einer Ansicht von vorne, von der Seite und von hinten das Zugehörige Gehäuse;

Fig. 43, 44 und 45

in einer Ansicht von vorn, von der Seite und von hinten den zugehörigen Schließkern;

Fig. 46, 47 und 48

in einer Ansicht von vorne, von der Seite und von hinten die zugehörige Feder;

Fig. 49, 50 und 51

drei Ansichten einer zugehörigen Befestigungsscheibe für die Feder;

Fig. 52 und 53

zwei Ansichten einer zwischen Gehäuse- und Schließkern angeordneten Tellerfeder; und

Fig. 54

eine Darstellung zur Erläuterung des Befestigungseffektes bei dem hier dargestellten Verschluß.

It shows:

Fig. 1

in a partially sectioned side view a first embodiment of a housing designed according to the invention;

Fig. 2

a view from the right of the housing shown in Fig. 1;

Fig. 3

a rear view of the housing shown in Fig. 1

Fig. 4

a sectional view taken along section line IV-IV of Fig. 1;

Fig. 5

another embodiment of the housing according to the invention in a side view;

Fig. 6

a side view of the housing of FIG. 5 rotated by 45 ° relative to FIG. 5;

Fig. 7

6 in a view from the rear;

Fig. 8

a 45 ° rotated side view of FIG. 6 of the housing of FIG. 6;

Fig. 9

a side view of a sash lock mounted in a door leaf, in which the housing can be fastened by means of a U-shaped plug spring which is separate from the housing or optionally with a fastening nut;

Fig. 10

in a side view of a so-called quarter turn lock with cross pin, in which a housing shape similar to that of Figure 1 has been used.

Figure 10A

the opening in the door frame required for the cross pin;

Fig. 11

in a view similar to FIG. 10, a quarter turn lock according to yet another embodiment, in which the housing has a shape that is similar to that of FIG. 6, the embodiments of FIGS. 10 and 11 being special for housings designed according to the invention because of their central loading are cheap;

12 and 13

in a side view and a view from the rear also a cam lock which can be inserted blindly into a sheet metal wall opening with a fastening spring which is U-shaped in side view and held by projections extending from the housing;

Fig. 14

the shape of the opening matching the housing according to FIGS. 12 and 13 in a sheet metal wall;

15 and 16

in a side view and a rear view of an embodiment of a housing which can be used in the closure according to Figures 12 and 13.

17 and 18

in a side view and in a view from behind an associated spring;

19 and 20

in views similar to FIGS. 15 and 16, another embodiment of a housing for the closure according to FIGS. 12 and 13;

21 and 22

in views similar to FIGS. 17 and 18, a correspondingly designed spring for the housing according to FIGS. 19 and 20;

Fig. 23

in an enlarged view, the type of attachment by the spring according to FIGS. 17 and 18;

24, 25 and 26

in a side view, partially cut Side view and in a view from behind another embodiment of a housing;

27, 28 and 29

an associated spring in two side views and in a view from the rear;

30, 31 and 32

in views similar to Figures 24, 25 and 26, yet another embodiment of the housing;

33, 34 and 35

in views similar to Figures 27, 28 and 29, an associated spring.

36, 37 and 38

a side view, a rear view and an axial sectional view of yet another spring-fastener;

Fig. 39

the associated sheet metal breakthrough;

40, 41 and 42

in a view from the front, from the side and from behind the associated housing;

43, 44 and 45

in a view from the front, from the side and from behind the associated locking core;

46, 47 and 48

in a view from the front, from the side and from behind the associated spring;

Figures 49, 50 and 51

three views of an associated mounting washer for the spring;

52 and 53

two views of a plate spring arranged between the housing and closing core; and

Fig. 54

a representation for explaining the fastening effect in the closure shown here.

BEST WAYS OF CARRYING OUT THE INVENTION

First, FIG. 9 is discussed in order to explain the general problem. FIG. 9 shows a side view of a so-called cam lock 10, which is fastened in a sheet metal wall 26, such as a control cabinet door, by means of an earthing and fastening spring 34, as is frequently used for example in electrical control cabinets. It consists of a closure housing 11, in which a toggle handle 12 having an actuating shaft 14 at its free end to z. B. is rotated 90 °. The angle of rotation is limited by a nose 16 which is attached to a sash tongue 18 carried by the other end of the shaft 14 and which abuts two stop faces 20 of a depression 66 at the end of the closure housing 11.

The closure also consists of a housing with a cylindrical receiving space 60 for a locking core 9, which housing 11 merges at its front end into a flange 30 bearing against a sheet metal wall side 40, while the housing 11 at its rear end has a passage 64 for one with the Closing core 32 has connected locking shaft 6 here with a square end, on which the sash tongue 18 is mounted, for example by means of a screw bolt 22, in a rotationally rigid manner.

The sash tongue 18 is fastened to the actuating shaft 14 here by means of a screw 22 and slides with a sash surface 24 onto a corresponding path of the door frame (not shown) when the control cabinet door 26 is closed. The handle 12 can also be removable, for example by inside the lock housing 10 a square is provided on the actuating shaft 14, onto which a key provided with a corresponding square recess can be attached. Other embodiments such as triangular, double bit, etc. are also possible, as is an inserted cylinder for a security key.

9 is fastened by first inserting it with the sash tongue 18 and then with its rear closure housing part through a corresponding opening in the door leaf 26 until its flange 30 rests on the outer surface 32 of the door leaf 26. Now either a screw nut is screwed onto the thread 36 of the closure housing or, as shown in FIG. 9, a U-shaped plug-in spring with its two legs is inserted into side grooves 40 in the closure housing 10 in such a way that this spring is on the one hand the inner surface 42, on the other hand on the one side edge 44 of the grooves 40.

The spring has at the leg end 5 a protruding tooth in the direction of the surface 42, with which this tooth digs in through possible lacquer layers when the spring is inserted and establishes a connection with the bare sheet metal of the door leaf 26 or the like.

The disadvantage here is the need to insert this spring 34 after inserting the housing 11 through the corresponding opening in the sheet 26 from the rear, and the scratch crack that occurs when inserted by the tooth on the spring 34 is in some circumstances disturbing because it causes rust could lead. It is also not certain whether the shaking movements of the overall arrangement not work out the spring 34 again in the seat shown and then release the closure at some point.

By side-mounted flats 38 on the bearing housing, which can be attached either only on one side or at two or four mutually offset by 180 ° or 90 °, the lock receives torsional resistance, if the opening in the door leaf 26 with constrictions for this Flattenings 38 is provided.

Instead of the captive nut or the captive U-shaped spring clip 34, a closure housing 111 or 1011 is shown in FIGS. 10 and 11, in which the spring extends from the housing wall and is itself integral with the housing 111 or 1011. Because of this one-piece design, the spring 46 or 146 is not only not lost, but, as will be described in more detail, there is also no need to keep the door leaf 26 accessible from the rear, which would be necessary for the fastening means of the insertion spring 34 according to FIG. 9 to insert. Instead, in the embodiments according to FIGS. 10 and 11, the housing 11 and 1011 with the respective in the locking mechanism built into the housing, for example the transverse pin 15 originating from a shaft 14, is inserted through a correspondingly shaped opening 28, the spring-like projections 46, 146 extending here from the rear end of the housing 11, 1011 in corresponding depressions 48 in the outer surface of the housing 11 , 1011 can pull back in order to jump out again due to their spring force at the moment of the flange 30 being put on the door outer surface 32 and in doing so with its end face 50 to support the inner edge of the opening 28 or the inner surface 42 of the door leaf 26 and thereby preventing the housing 11, 1011 from sliding out of the opening 28 again. If the door is now closed and the shaft 14 with the transverse pin 15 is in the specified position, this pin penetrates a correspondingly shaped opening 52 in the door frame edge 54 shown in plan view in FIG. 10A, so that after the shaft 14 has been rotated by 90 ° the ends of the cross pin 15 rest against the non-laterally perforated edge surfaces 56 of the rear door frame surface 58 and thus hold the door 26 in the closed position, as shown in FIG. 10.

Here, too, the closure housing 11 has flats 38, so that the housing 11 is also secured against rotation in the opening 28.

The same applies to the embodiment according to FIG. 11, in which the shaft 14 has an end part which is flattened in one direction and forms an arrow with an undercut (see the illustration in FIG. 10) in the direction perpendicular thereto, so that the door can be easily slammed in the illustrated locking position, the tapering part 17 of the shaft 14 between the resilient jaws 19 of a abutment 21 attached to the door frame 54 urges, wherein in the end position shown here there is a locking by the inwardly facing hook-shaped ends. By turning 90 °, the flat parts reach the hooks and the end part 17 can be pulled out again and the door opened.

The advantage of the two closures shown in FIGS. 10 and 11 over a cam lock z. B. according to FIG. 9 is that the load on the shaft 14 only occurs axially, while in the embodiment according to FIG. 9 there is also a bending load which, like the axial load, has to be transmitted from the housing to the door leaf 26 and which Case tongues on one side of the case are under pressure.

An embodiment will now be described with reference to FIGS. 1 to 5, which has also been used in a modification in the construction according to FIG. 10.

The closure housing designated here with the reference number 111 comprises a housing wall 4 which encloses a cylindrical receiving space 60 and merges into a flange at the front end of the housing, while at the rear end a housing base 62 closes off the space 60 and axially a breakthrough opening 64 for receiving those not shown here Actuating shaft has. As shown here, the bottom 62 can, similarly to the embodiment according to FIG. 9, form a two stop faces 20 for a guideway 66 forming from a cam.

The arrangement of two springs 46 which emanate from the housing wall 4 near the housing end 68 and are integrally molded with the housing 111 from plastic, such as polyamide, is favorable here. How to recognize the housing end 68 has a round cross-section with four flats 38 offset from one another by 90 °, see FIG. 3. While the flat 38 facing the viewer in FIG. 1 extends from the housing end 68 to the flange 30, see also FIG. 2, the corresponding flattening surface in the area of the spring 46 only extends to the spring extension 70 and opens there on the one hand into the spring 46, and on the other hand into a recess surface 72, which has the sense of accommodating the spring 46 if the housing is supported by a corresponding one four constrictions for the flats 38 of the cross section of the housing base 68 provided opening in a door leaf is pushed through. As soon as the breakthrough edges reach the spring attachment region 70 and the housing is pushed further, the spring 46 is pressed inward towards the recess surface 72, this recess having a depth dimension C (FIG. 3) such that the thickness A of the spring 46 essentially can be included. If necessary, especially if the spring has the V-shape shown here at its end, it may be sufficient if the recess depth C is only the same or a little greater than the material thickness of the spring, because this also causes a flattening of the spring during bending V-shape to a straight shape would be conceivable. It is expedient to keep the width of the spring, D, equal to or just a little smaller than the width E of the flattened area 38, so that the spring 46 is pressed inwards by the corresponding straight line-like region of the constriction of the door opening, but not by the circular area. This improves the guiding accuracy and the accuracy of the angular alignment of the housing in the opening.

The spring stiffness of the spring 46 depends on the material thickness on the spring extension 70 and on the material thickness of the free spring length adjoining it, and also on the extent of the V-shaped bend, which can be seen particularly clearly in FIG. 4 and rises continuously starting from the spring extension 70 and reaches a maximum shown at the spring end, which in the present embodiment has an angle α of approximately 165 °. In contrast, the angle at the spring shoulder 70 is 180 °.

Fig. 4, a sectional view along arrows IV-IV of Fig. 1, also shows that the material thickness of the spring 46 is substantially the same over its entire width, as well as over its longitudinal extent. Nevertheless, there is an increasing spring force compared to bending towards the end of the spring, due to the increasingly pointed V-shape, that is to say the decrease in the angle α. This is advantageous insofar as the spring 46 then lies against the rear surface 42 of the door leaf plate 26 with a particularly rigid tip 74, see the right-hand side of the illustration in FIG. 4, where the spring tip 74 reinforced due to the V-shape adjoins the here creates a tendon-like constricted area of the opening 28 after the housing has been pushed completely through this opening and the spring 46, which is initially pressed into the recess surface, is released again and initially pushes with its slightly outwardly tapered end face 74 over the corner of the sheet metal of the door leaf 26 and then jumps out further and rests firmly with the end face 76 on the area of the face 42 of the door leaf 26 lying around the opening 28.

6, 7 and 8, another embodiment is shown, in which the spring 146 does not originate from the housing end 68, but rather from side edges 76, which arise from axial depression areas 78 formed between the flattened area 38. Otherwise, the housing according to FIG. 6 has a completely analogous construction Flange 30, receiving space 60, system or floor surface 80 for a closing core, not shown here, and a bore 64 for the actuating shaft (on which, for example, a cam 18 is then attached and fixed with a screw 22, 22), the cam then simultaneously locking the holds the recording space 60). It is also possible for springs 146 to extend from both side edges 82, 84 of the depression region 78, but there is a more favorable spring effect with a longer extension of the resilient region, so that the space is better used by only one spring, which starts from the side edge 84 here.

The space 78 is in turn just sufficient to allow the spring 146 to be immersed when the housing is pushed into a corresponding opening provided with constrictions for the flattened areas 38, the spring 146 being designed such that it initially on the upper housing near the floor, see Reference number 85 in Fig. 7, just lies on the curved opening area of the opening in the door leaf 26, see the dashed line 87 in Fig. 7. Further in the direction of the flange 30, the spring then increasingly projects with its free end edge, so that she finally lies with her tip 174 behind the sheet of the door leaf 26. The contact surface of this tip 174 is large enough to hold the closure housing securely in the opening in the door leaf 26. In the embodiment shown here, the spring 146 is designed such that it initially has a constant wall thickness starting from the attachment line 76, reference number 86, and then merges into an area 88, which is an increasingly thicker area that relates to the area 86 with a uniform material thickness and thus forms a conical thickening placed on the normal material thickness, starting from the cone tip with a thickening dimension F 7, which is identified in FIG. 7 and just reaches such a thickness that can still be accommodated in the depression region 78, ie that when the spring is bent around the extension of the line 76, the conical region 88 is completely absorbed into the depression region 78 can be.

As can be seen, the springs 146 in the embodiment shown in FIGS. 6, 7 and 8 are supported in the curved regions of the opening, while in the embodiment according to FIGS. 1 to 5 the straight, tendon-like regions of the opening are supported, on which the springs 46 are supported.

1 to 9, and 10 and 11 are inexpensive to manufacture and assemble. In addition, they cannot be dismantled without special tools and are therefore well protected against theft of the closure (often occurs in letterbox systems, for example!).

However, this also applies to the closure housings shown in different views and embodiments in the further FIGS. 12 to 54, in which further embodiments the spring 34 (or 234 in FIGS. 12 to 18; 334 in FIGS. 19 to 23, 434 in 24 to 29, 534 in FIGS. 30 to 35; 634 in FIGS. 36 to 54;), each with the housing or the housing wall 11 (or 211 in FIGS. 11 to 18; 311 in FIG. 19 to 23; 411 in FIGS. 24 to 29; 511 in FIGS. 30 to 35; 611 in FIGS. 36 to 54;) represents an axially rigidly connected metal part, the metal preferably being spring metal, such as steel. The housing can also be injection molded from a metal, such as die-cast zinc, or made of plastic again. This metal spring 34 can be U-shaped (Fig. 12 to 35) or cup-shaped (Fig. 36 to 54) bent so that the spring with the U-web 35 or the cup base engages around the rear end of the housing axially supported at the rear end or near the rear end and supported with the U-leg ends or cup edges on the other side 48 of the thin wall. The U-legs 37 of the spring 37 which is U-shaped in side view are preferably arranged in the region of the flats 38. The cup wall of the cup-shaped spring (eg 634), on the other hand, consists of four legs 637, each offset by 90 ° to one another, the legs each lying in the area of a housing flattening 654. The spring may be held by a protrusion or slug extending from the housing (e.g. 152 in FIGS. 15, 16;), or the spring is on the recess by recesses (e.g. 178 in FIGS. 24 to 26) Circumferential surface of the housing 411 held. Alternatively, the spring can be held by a spring part with end hooks (eg 168 in FIGS. 21 to 22) which extends through the sheet metal wall opening 29. However, the spring can also be held by a washer (49 in FIG. 38) placed on the end face of the housing. Recesses (for example 154 in FIG. 16, FIG. 26; 654 in FIG. 42) are provided in the housing wall for receiving spring parts projecting in retirement.

As already mentioned, such a spring which can be fastened to the closure can be produced, for example, by firstly forming a blank of the spring (see, for example, FIGS. 55, 56, 57) made of sheet steel while simultaneously forming openings, eyes, edges and / or bends is formed that the spring blank is then hardened and finally the spring is placed on the housing of the closure. After the latter process, the spring (e.g. 734) could be fixed to the housing (e.g. 711) by a part which can be fixedly connected to the housing or by a part (such as shaft, tongue) emerging from the housing connectable part can be fixed. The fixing can be done by gluing or pressing tongue and groove devices (e.g. 45, 47 in FIGS. 36 to 54) on the parts (49, 611) to be fixed together.

The embodiments of FIGS. 12 to 54 will now be discussed in detail:
12 shows a closure 210 which is fastened in a door leaf 26 and engages a door frame part 27 with the running surface 24 of its tongue 18. The door leaf 26 has an opening or opening 29 which is essentially circular with two chord-shaped constrictions 31. The peripheral region 33 of the housing 211 of this closure 210 is also designed accordingly, which can be seen in a side view in FIG. 15 and in a view from the rear in FIG. 16. For fastening the housing, a spring 234 which is U-shaped in side view is provided here, which extends on a projection 152 which extends from the flattened side, more precisely, from a recess 154 provided on this flattened side and extends to the plane which would normally have been formed from this flattening and which are also defined by the end regions 156 of this depression. The spring 234 fits into this recess with its legs 37, the projections 52 after the spring has been pushed onto the housing 211 from behind penetrate corresponding openings 158 in the spring, in which case essentially the spring strength is absorbed by the depression 154 and the spring is then held in position by the projection 58. The spring 234 is along a bending line 160 through an angle 62 of z. B. bent upwards by about 10 to 20 °, as can also be seen in FIG. 18, with which bend, see FIG. 23, the spring bears against the edge 162 of the sheet metal wall 26 and thereby the housing 11 in connection with the Flange 30 clamped.

To make an electrical connection between this spring 37 and the metal of the wall 26 if necessary, which is particularly important if the material of the housing 11 itself is a non-conductive plastic, such as. 38 also the case according to FIG. 38, the one side edge of the leg 37 advantageously has a toothing 164 (FIG. 23) which, when the housing provided with the spring is pushed in, scrapes through the opening 29 along the opening edge 166 and rubs along it. Since the leg 37 also has a slightly increasing width in the direction of the U-web 35, this toothing 164 digs increasingly into the sheet metal and thus ensures an electrical connection, even if paint residues or oxide layers were previously present on the sheet metal .

This electrical connection between the metal sheet of the wall 26 and the metal material of the spring 37 makes it possible, even in the case of housing 11 made of insulating material, to establish an electrical route between the wall 26 and the shaft 14 with an adjoining key or sash tongue 18: since the the spring 634, the disc 49, the shaft 14 and the handle or key are mostly made of metal for reasons of strength, and the disc 44 according to FIG. 38 or the tongue 18 according to FIG. 12 bears against the web-shaped end 35 of the spring 234 , and there again over the fastening bolt 22, also made of metal, a electrical connection to the locking core, which is also made of metal, or to the shaft 14, the handle or key is also electrically connected to the metal of the wall 26. In the case of an electrical control cabinet made of sheet steel, 26 thus represents the door frame and the danger that loosely hanging down electrical voltage-carrying wires within the control cabinet, which come into contact with the tongue 18, transmit a dangerous electrical voltage to the key 14 is averted , since this voltage is harmlessly diverted to the door leaf and thus to the control cabinet housing.

19 to 22, another embodiment of the housing 311 and the fastening spring 334 can be seen, in which the spring has at its leg ends outward bends 168 which lie around the edge 166 of the opening and thus the spring axially on the sheet metal hold onto the wall 26. In order to accommodate this bend 168, the flange 30 has a corresponding depression 170 in the contact surface which rests on the surface 32 of the door leaf 26 when the closure is inserted through the opening. Otherwise, the housing 311 also has a recess 154 for receiving the U-webs 37 of the U-shaped spring 334, similar to the embodiment according to FIGS. 15 and 16. The spring 334 has in the embodiment shown in FIGS. 21 and 22 two bending lines 160, so that there are two bent regions 172 which are supported on the edge region 162 of the door leaf 26 after the spring has been pushed through. Here too, toothings (not shown) can be provided in order to make ground contact if necessary. Teeth could e.g. B. at the edges 174 of the bends. In addition, reference is made to a bend 176 out of the inner ring area of the U-web 35 of the spring 334, which serves to exert a defined pressure on the tongue 18 sliding on this ring surface and thus a constant scraping and sliding contact and to make a good earth connection.

Another embodiment can be seen in FIGS. 24 to 29, wherein here a spring 434 is supported on lateral incisions 178 in the outer wall of the housing, with projections 80, as can be seen in FIG. 28.

As can be seen in FIG. 26, the peripheral region 33 of the housing 411 is here equipped with two mutually opposite recesses 154 which are not flat, as for example be: the embodiment according to FIGS. 16 and 20, but in turn have a circular shape which is coaxial with the overall cross section of the housing. The wedge-shaped incision 178 then emanates from this circular surface with a reduced radius, which itself forms a straight inner edge 82 (FIG. 25) on which the end face 84 of the projection 80 is supported. The projection 80, like the entire spring 434, is made of flexible material, so that the U-shaped spring 434 can be slid over the housing 411 from behind, the projections 80 springing back first and then lying in the incisions 178 as soon as the spring 434 has reached its fully deferred position on the housing 411.

It is noteworthy here that the leg ends 86 of the spring 434 extend to the inner surface 88 of the flange 30, so that these leg ends lie against the breakthrough edges of the door leaf plate 26 when the housing 411 provided with the spring 434 is then subsequently inserted into the door leaf opening, which has a breakthrough shape similar to that of FIG. 14. During this pushing-through, bends 90 starting from the legs of the spring 434 and widening in a wedge shape towards the leg ends come into operative connection with the breakthrough edge in the sense of a paint-removing or oxide-removing function which, if necessary, produces a grounding contact. The circular incision 178, as can be seen in FIG. 26, also serves at the same time as a receiving space for the yielding of the two unbent sides of the spring legs, so that this scraping effect takes place under the bending force of the legs pressed into the recess 178. As soon as the front end 92 of the projecting bend has been reached, the leg jumps back into the position shown in FIG. 28 and lies against the rear surface 42 of the door leaf plate 26 and thus locks the overall arrangement in the door leaf 26. According to FIG. 29, there are four such bends are present, so that there is a very secure hold in the door leaf. At the same time there are two contact surfaces of the spring 434 on the door leaf material, namely firstly through the projecting edges 90 with their end edges 92 on the surface 42 and secondly with the projecting regions 86 on the inner opening surfaces of the door leaf 26.

30 to 35 show a housing 511 and an associated spring 534, in which an asymmetrical shape and recess, here provided with the reference number 254, is selected. Only one bend 90 is provided for the deeper cut one side of the depression 254, while only one saw tooth 164 is provided for the other, flatter side of the depression 254. Here, too, the legs 137 of the spring extend with their end part to the inner contact surface 88 of the housing 511 and thus touch the breakthrough edges of the door leaf 26 in the mounted position. This means that the sawtooth-shaped part 164 carried by the one side edge of the legs 137 extends into the Area of the breakthrough and thus ensures a grounding of the closure if necessary. No special measure is shown here with which the spring 534 is axially fixed to the housing 511. A construction according to the embodiment of FIGS. 24 to 29 is conceivable, or an embodiment according to FIGS. 14 to 18 or also according to FIGS. 19 to 22.

36 to 54 an embodiment is described in which the spring is not U-shaped, but rather cup-shaped, the opening provided for this closure being provided with four tendon-shaped constrictions 31, such as. B. also in the construction shown in Fig. 10. Correspondingly, the housing 611 has, in addition to outer surfaces 41 which represent circular sections, recess areas 654 which provide space for the four legs 637 of the cup-shaped spring 634 to deflect. These legs 637 each have a bending line 660, on which the legs are bent in a roof shape, again in the form that towards the free end of the legs, starting from 180 °, see reference number 686, the angle enclosed by the roof shape becomes smaller and smaller , while on the flat leg 642 the angle is, as I said, 180 °. When the housing 611 provided with a spring is inserted, the opening edge of the opening 629 can thus bend the leg 637 straight (i.e. bend it up to almost 180 °) in the region of the increasingly strong roof shape and thus press it into the recess region 654. As soon as the flange area 30 bears against the surface of the door leaf 26, the end faces 686 of the spring 637 also jump back into their original shape (here the roof shape) and, in the process, lie against the edge face 62 of the door leaf 26 and thereby secure the Lock 610 held.

In Fig. 38 it can be seen that here the spring 634 is attached to the housing 611 in a somewhat different form. This housing 611 has namely from the passage 42 for the closure shaft 14 in the region of the rear end 613 of the housing 611 radially recessed recesses 45, in the projections 47 of an end plate 49 (Fig. 50, 51) can snap and between them and the end 613 of Clamp housing 611 the cup bottom area of cup-shaped spring 634, reference number 51. For this purpose, this cup bottom area 51 also has incisions 53 in order to allow the projections 47 to pass through. Fine possibly provided for the nose 16 of a sash tongue 18, Countersink 66 forming stop surfaces 20 can then be formed by the disk 49, see FIG. 51. The disk 49 can be made of electrically conductive material, such as metal, or of electrically conductive plastic, so that, if necessary, it is in turn possible to use the fastening spring 634 to be electrically connected via the disk 49 to the tongue 18 and thus also to the likewise metallic locking core including the locking shaft 14. However, an actuating key plugged onto the square of the locking core shown here, see FIGS. 43 to 45, is also electrically grounded, so that the necessary equipotential bonding path would be established between the actuating key and the control cabinet door.

In the case of the square plug closure shown here, a frictional rotation lock is provided with the aid of a plate spring 55, which is shown in a top view in FIG. 52 and in a side view in FIG. 53, and between the inside housing support surface 55 (see FIG. 38) and a corresponding contact edge 57 of the closing core 59 (see FIG. 44) and causes a defined friction, which is desired here. In the sectional view through the closure 610 shown in FIG. 38, an O-ring seal 61 can also be seen, for which a corresponding annular space is provided by the closing core 59, see reference number 63. The fastening of the disk 49 on the housing 611 can be carried out with the aid of the tongue 18 held by the screw bolt 22 if the additional axial load resulting therefrom, which is transmitted from the spring 634 to the disk 49 and from there to the tongue 18, from where this axial load via the screw bolt 22, screwed into the threaded bore 65 of the closing core 59, then ultimately transmitted via the surface 57 and the plate spring 55 to the contact surface 15 of the housing base, ie leading to an additional load-related friction, does not interfere. Alternatively, it can also the disk 49 are attached to the housing 611 in some other way, for example by gluing the projections 47 in the recesses 45.

The closure can then be dismantled by loosening the bolt 22, for example for the purpose of replacing the locking core with another, without the parts 49, 634 and 611 also falling apart.

54 again shows how the edge 686 of the spring 634 holds the housing 611 on the door leaf 26. If the spring is to have a paint-scraping effect again, this could be done, for example, by applying a toothing 67 to the bending edge 660, scraping off the paint and oxide residues, in particular on the breakthrough edge or reveal, and exposing a bare metal surface in the entire area of this opening and this also gives the metallic end face 686 the possibility of an earth contact, as can also be seen in FIG. 54.

In the embodiment according to FIGS. 36 to 54, if a permanent fixation between the disk 49 and the housing 611 is not carried out (for example by gluing) because the axial load does not interfere, for example, the entire arrangement can be easily dismantled by removing the screw 22 possible, ie including the dismantling of the spring 634 from the housing 611 and thus also the housing 611 from the opening 629. If the spring 634 cannot be removed from the housing 611, special tools can be used to remove the projecting and the spring 634 press back on the holding parts, loosen them. This also applies to the embodiments according to FIGS. 12 to 35.

Another advantage of the embodiment with a two-part housing, the two parts not being permanently connected, is that an assembly can still be carried out with a loose fastening screw 22, and only then is the screw tightened, as a result of which an even more precise fixation in the opening would be conceivable.

All of the described embodiments have the advantage that an inexpensive plastic housing without thread can be used. The removal of the thread has the favorable effect that no so-called die injection tool is necessary, i. that is, the tool costs for the manufacture of the plastic housing are simpler and therefore cheaper. For any desired grounding purposes, as already stated, in the embodiment according to FIGS. 36 to 54, only the disk-shaped end piece 49 has to be made of metal, which causes low costs. The locking core and the other moving parts of a closure are anyway to be made from founders of mechanical strength made of metal, so that in this way the cheap ground connection path described above results. The advantage of the clip fastening by means of the fastening spring described here has the advantage that no "freedom from keys" is necessary on the back of the door leaf 26 in order to put on a fastening nut or also to push on a fastening spring according to FIG. 9. Another advantage is the security against theft, since it is difficult to remove the lock used with the clip fastening. As already mentioned, a special tool is required for this, which an unauthorized person will usually not have at hand.

If a stop, which is realized in the construction according to FIG. 36 by the stops 20 in the disk 49, is not required, or this stop is placed inside the closure, for example in that a projection and a corresponding projection in it Movement-limiting path formed by the closing core or the inner surface of the housing, the disc 49 can also omitted and the spring 634 are held directly by the sash tongue 18. Here, however, the disadvantage cannot be denied that the sash tongue and screw must also absorb the fastening forces of the fastening spring 634. If you want to avoid this again, the sash housing could be provided with protruding slugs, as was described in the embodiment of FIGS. 12 to 18.

In very simple circumstances, however, the pressure effect of the fastening spring 634 may also be desirable, for example if the plate spring 55 is to be omitted. Then the fastening spring 634 takes over the friction pressure generation.

Such friction by axial forces is such. B. always required when a closure is to be operated by a socket wrench. Friction can be eliminated if there is a cylinder lock that automatically holds the lock in the closed and possibly open position.

In the embodiments of FIGS. 27 to 29 and 33 to 35, the bends 90 of the fastening spring are each made through 90 °. Instead of a 90 ° position, a smaller turn can also be made, which would enable greater tolerance compensation.

The closures shown in FIG. 12 with cylinder lock are particularly well suited as mailbox closures, since these cannot be dismantled without authorization and then stolen for your own purposes, because they can only be dismantled using special pliers.

Claims (11)

1. Closure socket (1011) having a flange, a middle section and a tail section, for mounting in a break-through (28) in a thin wall such as a metal cabinet door (26) or a metal housing lid, the socket (1011) being retained by means of a spring or springs (46) resting against the edge of the break-through or the back surface (42) of the thin wall (26) upon pushing the tail end (68) and the middle section through the break-through (28) up to the flange (30), the spring or springs (146), which rest against the edge of the break-through or against the tail surface of the thin wall, extending from the exterior surface of the middle section of the socket in the vicinity of the tail end or from the tail end of the closure and being axially fixedly connected to the socket (1011), the break-through (28) in the thin wall (26) being round and having tendon-like constrictions radially offset relative to each other, the cross-sectional profile of the middle section of the socket (1011) being round and having flats (38) corresponding to the tendon-like constrictions, and the exterior surface of the middle section of the socket (1011) (if applicable, in the areas between the flats (38)) having at least one indentation, characterized in that on the exterior surface of the middle section of the socket (1011) axially aligned grooves (84) are formed, which provide indentations for receiving the springs (146) during pushing through of the socket, the spring or springs (146) each extending from and along one of the lateral walls (84) of these grooves (84), the spring (146) forming along the groove (84) a cross-section (88) flaring towards the flange (30), and in that the exterior surface of the spring (146) runs away from the middle axis of the socket, starting from the tail end of the cylindrical middle section and extending without transition at an acute angle relative to the middle axis of the socket towards the flange.
2. Closure socket (111) having a flange, a middle section and a tail section, for mounting in a break-through (28) in a thin wall such as a metal cabinet door (26) or a metal housing lid, the socket (111) being retained by means of a spring or springs (46) resting against the edge of the break-through or the back surface (42) of the thin wall (26) upon pushing the tail end (68) and the middle section through the break-through (28) up to the flange (30), the spring or springs (46), which rest against the edge of the break-through or against the tail surface of the thin wall, extending from the exterior surface of the middle section of the socket in the vicinity of the tail end or from the tail end of the closure and being axially fixedly connected to the socket (111), the break-through (28) in the thin wall (26) being round and having tendon-like constrictions radially offset relative to each other, the cross-sectional profile of the middle section of the socket (111) being round and having flats (38) corresponding to the tendon-like constrictions, and the exterior surface of the middle section of the socket (111) (if applicable, in the areas between the flats (38)) having at least one indentation, characterized in that the spring or springs are disposed in the flats (38) and the exterior surface of the middle section of the socket has a receiving chamber (72) in two oppositely arranged flats (38) for receiving, during pushing through of the socket, one spring (46), respectively, starting from or in the vicinity of the tail end (70, 68) of the socket, said spring (46) having a V-shaped cross-section and the tip of the V-shape pointing towards the receiving chamber and being adapted to rest on the area provided by the receiving chamber (72), and in that the exterior surface of the spring (46) runs away from the middle axis of the socket, starting from the rear end of the cylindrical middle section and extending without transition at an acute angle relative to the middle axis of the socket towards the flange.
3. Socket as claimed in Claim 1, characterized in that the cross-section of the spring is triangular, semicircular or semi-oval, and that this cross-section flares beginning from a small dimension at or in the vicinity of the tail end of the socket (1011) up to a maximum dimension at the free face side (174) of the spring (146 in Fig. 6, 7, 8, 11), and that when the socket (1011) is in its position the end resting against the door leave (174) forms an outwardly facing bevelled section (90 in Fig. 6).
4. Socket as claimed in Claim 2, characterized in that the angle (α) defined by the V-shaped cross-section is reduced beginning from an angle of 180° at the fastening end (70) down to an angle of between 170° and 150°, preferably down to 165°, towards the free end (74 in Fig. 1 to 5, 10).
5. Socket as claimed in Claim 2 or 4, characterized in that the springs (46) extend starting from or in the vicinity (62) of the tail end (68) of the socket (111), where the socket has at the same time an annular groove or annular notch (66) forming a stop nose (16) extending from a dog (18).
6. Socket as claimed in any one of Claims 1 to 5, characterized in that the springs (46, 146) extending from the socket (11, 1011) are injection-moulded as a single part from plastics, in particular polyamide.
7. Socket as claimed in any one of Claims 2 to 5, characterized in that the spring (234, 334, 434, 534, 634) is a metal component, preferably of spring steel, which is axially fixedly connected to the socket (211, 311, 411, 511, 611), and that the spring is bent in a U-shape (234, 334, 434, 534) or in a cup-shape, and that the spring encompasses with the U-shaped web (e.g. 35) or the cup bottom the tail end (68) of the socket, is axially supported at the tail end (68) or in the vicinity of the tail end (68) and/or rests with its U-shaped leg ends or cup edges on the other side (48) of the thin wall (26).
8. Socket as claimed in Claim 7, characterized in that in the case of the U-shaped spring (37), if seen in a lateral view, the U-shaped legs (37, 137) of the U-shaped spring are disposed in the area of the flats (38), whereas in the case of the cup-shaped spring (634) the cup wall of the spring consists of four legs (637) offset relative to each other by 90°, each of the legs being located in the area of a socket flat (e.g. 654).
9. Socket as claimed in any one of Claims 7 or 8, characterized in that the spring is retained by a projection or slug (152) extending from the socket or by the set-offs in the peripheral surface of the socket.
10. Socket as claimed in any one of Claims 7 or 8, characterized in that the spring is retained by a spring portion having an end hook (168), said spring portion extending through the metal wall break-through (29).
11. Socket as claimed in any one of Claims 7 or 8, characterized in that the spring is retained by a disk (49) resting on the tail end (68) of the socket.

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