EP0992644A2 - Bolt latch for mounting in a thin wall - Google Patents

Abstract

The bolt is displaceably located against spring force in relation to the thin wall (12). The bolt is formed by a second trough (18) which is displaceably located in the first trough (14) held in the first trough in the thin wall and against the force of a spring (20). The first trough has a nose formation (26) projecting over the outer wall plane (24). The nose formation, when the first trough is pressed into the cut-out (16) of the thin wall, can be switched back in the wall plane against spring force, forming a surface (30) which clamps on the inner surface or edge of the cut-out.

Description

The invention relates to a bolt lock for mounting in a thin wall, such as Tin cabinet door, consisting of a recessed grip that is rectangular Cutout can be snapped into the thin wall and one on one side of the rectangle Latch includes, which is displaceable against spring force with respect to the thin wall is stored. Such a bolt closure is the applicant from a Brochure page G-9 from Southco, Inc., USA, known. Such one Bolt lock can be in a correspondingly dimensioned opening of a door leaf engage, whereupon the door or flap can be closed, whereby the latch lies behind a frame or frame to which the door is hinged is. When the door or flap is closed, the recessed grip moves within the correspondingly dimensioned rectangular opening in the door leaf against the force one hinged to the recessed grip, against the edge of the opening pressing spring, being due to the inclined surface of the bolt when pressing the Door or flap this sliding movement takes place automatically. As soon as the bolt The spring pushes the recessed grip behind the frame or frame opposite direction and thereby locks the door to the door frame.

The well-known closure is offered in different versions, each for a certain thickness of the door leaf, so for 1.2 mm thickness, 1.6 mm and 2.2 mm. There are no deviations from the thickness dimension by more than 0.2 mm permissible because then the arrangement either jams or rattles.

After all, the closure described above has the advantage that it is in one Door leaf can be mounted without the back of it should be accessible. Required in other known closures for sheet metal cabinet doors or flaps the mounting accessibility of the back of the door leaf to one from the front through a corresponding opening in the door leaf through the closure the rear by means of a nut or an attachable spring part.

The object of the invention is a latch lock of the type mentioned to further develop that he does not have a separate series for each sheet thickness required, but to different sheet thicknesses in a relatively large Adjust the area without making it stiff or rattling.

The invention is achieved in that the bolt from one in the first (outer), recess held in the thin wall against the force of spring second (inner) recessed grip is formed.

This measure makes the mobility of the trough carrying the bolt no longer influenced by the sheet thickness that holds the outer trough, but rather leaves develop the arrangement such that it is in thin walls with a relatively large Varying the wall thickness can be securely attached.

Around this first, outer trough in the rectangular opening of the wall, like door leaf, to hold, the trough has at least one side wall over the outer Projecting nose on the wall level, which when the trough is pressed into the Sheet cutout can retreat into the wall plane against spring force and a Tip of the nose that forms after being pressed into the inside of the sheet metal wall jamming. This feature allows the trough to be rectangular Section of the thin wall can be snapped in from the front without the The back of the thin wall should be accessible. The trough needs in that rectangular cutout not to be displaceable, as in the prior art, so that with relatively large spring forces and friction values the trough in the wall can be recorded, which benefits the stability of the arrangement.

Characterized in that the second trough in the first trough displaceable against spring force is stored, can be achieved that ensures optimal mobility is by a largely play-free, but sufficiently slidable storage is ensured. The second trough that slides within the first trough can be included, can be replaced if necessary, for example an adjustment of the bolt return to different strengths of the To enable door frames. The outer trough can also be opened if necessary replace if very different door thickness ranges are to be recorded.

According to a development of the invention, the first trough on the latch facing side in the side wall form an opening through which the second trough with the bolt carried by the second recess slidably passed through. The Bolt lock can conveniently be designed so that the first trough on forms an edge of the upper end of the side wall facing away from the transom, which in the Lumen of the first well extends so far that it - at least in the first Trough pushed back or retreated second trough - one Grip area for opening the door or the like. Then there is no need additional handle to open the door (which may even require a second hand) be provided. Rather, the finger that pushes the second trough into the pushes the unlocked position back, if necessary after the unlocking movement Reach behind the rear surface and exert tractive force to swing open the door.

According to yet another embodiment of the invention, the first trough forms one Lid that projects outwards on all sides over the side walls of the trough and after inserting the trough into the opening in the thin wall on the Breakthrough edge. These measures make the sharp-edged one, if necessary rectangular cutout covered. The lid preferably has an opening for reaching into the second trough on which opening is arranged such that when the second recess has receded, the rear surface to open the door or the like.

The two opposite side walls of the first trough, the expediently form a sliding guide for the second trough, have two incisions leading away vertically from the cover plane, which a tongue with Enclose the holding surface that extends close to the lower edge of the lid. On in this way there is a retaining lug on both sides of the trough, which increases stability the arrangement benefits.

Alternatively, the side wall of the bolt opposite the form the first recess vertically away from the cover plane, the enclose a tongue that extends close to the lower edge of the lid. In In this case, the attachment takes place at another point, but also can ensure sufficient stability.

This is especially true when the first, outer trough on the latch facing side two from the front ends of the two perpendicular to it Sidewalls extending obliquely upward towards the thin wall Forms approaches that end near the plane of the thin wall and between them Slidingly take up the latch. These approaches settle when inserting the at an angle Trough into the cutout on the back surface of the thin wall, thus ensuring a secure hold on this point, which leads to a high stability of the Arrangement leads.

These approaches can be made compliant in a suitable manner so as to Adaptation to different sheet thicknesses to a certain extent enable.

In a similar way, an adaptation to different sheet thicknesses is possible realizable that the free end of the tongues forms such a slope that can also have a corrugation that this slope to the lower Breakthrough edge of the breakthrough in the thin wall and the trough thereby securely locked in the opening even when the thickness of the thin Wall turns out differently.

It is favorable if between the outer surface of the wall facing away from the transom the inner trough and the inner surface of the wall facing away from the bolt outer trough a compression spring, such as spiral spring is arranged. In this way namely, the inner trough is pressed into its closed position, so that the bolt works like a door latch. To hold the spring in place, it can be favorable if of the outer surface of the wall facing away from the bolt inner trough an approach to receiving one end of the coil spring is provided. This approach can be round or what injection molding is favorable to represent a cross in cross section.

The bottom of the outer trough can have an opening into which one of protruding the bottom of the inner trough so that he the Thrust movement of the inner trough in the outer trough in at least the Direction limited to the bolt. In this way it is avoided that the Bolt by the spring force u. U. is completely pushed out of the outer recess. This approach expediently has the shape of a ramp in longitudinal section whose sloping ramp line faces away from the transom. That means that two troughs can be assembled into each other without any special Manipulations are necessary, but are then locked together so that they are do not fall apart in a door leaf during transport or assembly can.

The spring, which supports the latch action of the bolt, can be used at the same time serve to support the tongue which is the outer trough within the thin wall holds so that the risk is reduced that their spring force in the course of Time reduced too much, which could be the case with some plastics.

The invention is explained in more detail below on the basis of exemplary embodiments, which are shown in the drawings.

Fig. 1A, 1B, 1C und 1D
einen erfindungsgemäß ausgestalteten Riegelverschluß in Verbindung mit einem Türblatt in verschiedenen Montagestellungen;

Fig. 2A, 2B und 2C
in drei verschiedenen Ansichten die erste (äußere) Mulde des Riegelverschlusses gemäß Fig. 1 A bis 1D, welche Mulde das äußere Gehäuse bildet;

Fig. 3A und 3B
in zwei verschiedenen Ansichten die zweite (innere) Mulde, die den Riegel bildet;

Fig. 4A, 4B und 4C
in drei verschiedenen Ansichten eine alternative Ausführungsform des Riegelverschlusses;

Fig. 5
in einer Seitenansicht den Riegelverschluß gemäß Fig. 4A bis 4C während des Einbauvorganges;

Fig. 6
eine perspektivische Ansicht der äußeren Mulde (Gehäuse) des Verschlusses gemäß der Fig. 4A bis 4C; und

Fig. 7
eine perspektivische Ansicht der zweiten (inneren) Mulde des Riegelverschlusses gemäß der Fig. 4A bis 4C.

It shows:

Figures 1A, 1B, 1C and 1D
a bolt lock designed in accordance with the invention in connection with a door leaf in different mounting positions;

2A, 2B and 2C
in three different views, the first (outer) trough of the bolt closure according to FIGS. 1A to 1D, which trough forms the outer housing;

3A and 3B
in two different views the second (inner) trough, which forms the latch;

Figures 4A, 4B and 4C
in three different views an alternative embodiment of the bolt closure;

Fig. 5
4A to 4C in a side view during the installation process;

Fig. 6
a perspective view of the outer trough (housing) of the closure according to FIGS. 4A to 4C; and

Fig. 7
a perspective view of the second (inner) trough of the bolt lock according to FIGS. 4A to 4C.

In Fig. 1A, a bolt lock 10 can be seen, which in a thin wall, such as Tin cupboard door 12 or flap can be mounted using the bolt lock 10 from a first, outer recessed grip 14, which is in a rectangular cutout 16 can be snapped into the thin wall 12, and a second, inner recessed grip or Locking device 18 exists, which in the first, outer recessed grip 14 against the Force of a spring 20 in and against the direction of arrow 22 (Fig. 1C) is slidably mounted.

The outer recessed grip or the housing 14 has according to FIG. 1A there shown right side a projecting over the outer wall plane 24 Nose 26, when pressing the trough 14 into the cutout 16 of the thin wall 12, see arrow 28, in this wall plane 24 against the force of a spring, can can also serve the spring 20, retreat and forms a nose surface 30, which after pressing in on the back surface or the edge of the cutout 16 of the thin wall 12 clamps, as can be seen in Fig. 1B. The the first trough or the housing 14 forms on the side shown in FIG. 1A on the left, from which the locking device 18 looks out, an opening 32 (see also FIG. 2C) through which the second or inner recessed grip 18 slidably extends. The first recessed grip or the housing 14 also forms a cover 34 which over the side walls 36, 38, 40, 42, see Figs. 2A, 2B and 2C, respectively protrudes so that after inserting the housing 14 into the cutout 16th 1A this all-round projecting lid edge the edge of the Detail 16 covers, as can be seen in FIG. 1B.

The lid 34 also has an opening 44 which is sufficiently large to be able to e.g. B. pass a finger through and reach through the second, inner To allow trough or locking part 18, that is, in that designated by 46 in FIG. 3A Interior of the trough. The arrangement of the opening 44 in the cover 34 is such 1B that the rear trough wall 48 lies in the region of this opening 44 and therefore touched with a finger and against this wall 48 can be pressed. This pressure allows the second trough 18 inside the first trough 14 are slidably moved against the force of the spring 20 until the position shown in FIG. 1C is reached. At that moment, the back, lower outer edge 50 of the second trough 18 to the slightly inclined lower inner wall 52 of the first trough 14, causing a stop in the movement in Arrow direction 22 is formed.

Due to this displacement, the locking latch 54 comes from one Behind engagement surface 56 free, which is formed by a door frame 58 or the like .. In order to can the door leaf 12 from the door frame 58 (or the flap 12 from a Machine housing 58 or the like. Take out or swing out as it 1D with the arrow 60.

The size and position of the opening 44 in the cover 34 is expediently set so tight that a bar 43 protruding into the lumen of the trough 14 is produced, which forms a grip surface 41 for opening the door 12 or the like, which at least - and expediently only - accessible when the second trough 18th within the first trough 14 in the retracted position according to FIG. 10 located. It is sufficient if the bar has a grip area width B, see Fig. 4A, which makes up about half the stroke length H, that is the path of movement the second trough within the first trough, which is delimited by stop 52 or 90th Has proven itself - with z. B. Dimensions of the arrangement in the range of 25 ... 30 mm lid width, 50 ... 60 mm lid length - a stroke width H = 5 ... 7 mm, e.g. B. H = 6 mm, whereby the dimension B would be 3 mm. The depth of the troughs should be between 10 and 15 mm so that you can comfortably reach inside. The Dimensions in FIGS. 4A, 4B and 4C are nevertheless only an example.

When the door 12 is closed, the bevel 62 allows the latch 54 to be attached the edge 64 of the door frame 58 creates an automatic push back second trough against the force of the spring, whereupon then by the force of the Spring the second trough or latch 54 into the position shown in FIG. 1B is pushed, with which the door is locked.

For the smooth movement of this pushing movement in the direction of arrow 22 or opposite to this direction of the arrow form the two opposite one another Side walls 36, 38 of the first trough 14 provide a sliding guide for the second inner one Trough 18 by the inner surfaces of the side walls 36, 38 of the outer trough to the outer surfaces of the corresponding side walls 66, 68 of the attack the second recess 18 (see FIG. 3B). From the ends of the walls 36, 38 of the outer trough 14 formed remaining "side walls" 42 wear obliquely lugs 70 that extend upward toward the thin wall 12 end near the lower plane 72 of the thin wall and thereby the outer Hold the trough 14 within the cutout 16.

1, the inclined surface 74 allows the trough 14 to be inserted obliquely in the cutout 16 and the subsequent pivoting in the direction of the arrow 28, see Fig. 1B. It is advantageous if the lug 70 is used during this pivoting process slightly resiliently pressed down to create a frictional, one to form a certain pressure exerting holding device for the trough 14. By this spring action results in a desired adaptation to the possibly different thicknesses of the thin wall 12, for example between 0.8 mm and 2.3 mm may be. Ensures on the opposite wall level 24 the inclined surface 30 for adaptation to different wall thicknesses of the wall 12, depending on the wall thickness, the surface 30 due to its own spring action more or less pivoted outwards. The can be supported Holding effect of the nose surface 30 by a corrugation formed on it, which is shown in FIG. 2C with the reference number 76 is indicated.

In order to give the nose 26 the spring action described above, according to FIG. 2B shows the wall 40 opposite the latch bolt 54 with two perpendicular to the Level of the cover 34 leading incisions 78, 80 so that a tongue attached to the bottom 82 of the trough 14 results, due to the Material (plastic) spring action and thus at the upper end of this Tongue, which carries the nose 26, allows into the interior of the trough 14 to withdraw and thereby insert the trough 14 into the cutout 16 to enable the thin wall 12 according to FIG. 1A. According to the coil spring 20 1A in the position shown serves, for example, one of the the bolt latch 54 facing away from the wall 84 outgoing approach 86 on which the Coil spring 20 can be fitted appropriately. Approach 86 is here injection molding reasons with a cross-shaped (instead of circular) Cross-section.

The other end of the coil spring 25 is supported on the inner surface of the wall 52 the outer trough 14 from, as already mentioned, in the area of the tongue, the the nose 76 carries, thereby supporting their spring action, which they due already has their material properties, as described.

This will cause a decrease in the material spring effect due to Counteracted material fatigue.

The bottom 82 of the outer trough 14 has an opening 88, the for Trailing end 54 directed edge 90 with one from the bottom 86 of the inner trough 18 projecting approach 92 cooperates such that the pushing movement of the inner trough 18 within the outer trough 14 in the direction of the bolt 54 (opposite arrow 22 of Fig. 1C) in a position shown in Fig. 1B is recognizable. This ensures that the inner trough 18 does not come from the outer Trough 14 slides out completely. Appropriately, the neck 92 is in longitudinal section designed in the form of a ramp, the inclined ramp line from the trap 54 is directed away. This enables the inner trough 18 to be inserted more easily the outer trough 14 when the latch lock is assembled. Form the trap 54, in particular the return or formed by this trap 54 Receiving area 94, see FIG. 1C, can be adjusted to the thickness of frame 58 to adjust. In particular, it is possible to use inner troughs 18 with different shapes the incision 94 to keep in stock and, if necessary, with the outer trough 14 to combine. There is then one for different thicknesses of the frame 58 uniform larger shape of the outer trough 14 operational, in each differently shaped inner troughs 18 are introduced.

During the cup-shaped part 46, which is mounted within the outer trough 14 inner trough 18 has thin walls, for example molded from plastic, the trap 54 is formed by the bottom 86 continuing forward, jumps down, forms the slope 54, then the recess area for receiving the frame 58 and finally into a straight surface 96 passes over, which then again at 98 in adaptation to the inclination of the approaches 70 jumps back, see Fig. 1B. Serves to reinforce these often bent parts an inner wall 100 perpendicular thereto.

An alternative embodiment can be seen in FIGS. 4A to 4C, in which Fastening tongues with beveled nose surfaces 130 from the side walls 136, 138 go out. For the rest, the arrangements are similar to what they are has already been described.

Claims (16)

Bolt lock (10) for mounting in a thin wall (12), such as Tin cabinet door, consisting of a recessed grip (14) in a rectangular Cutout (16) can be snapped into the thin wall (12), and on one side of the rectangle comprises a latch which is displaceable against spring force with respect to the thin wall is mounted, characterized in that the bolt from a second trough (18) is formed, the in the first, in the thin wall (12) held trough (14) against the force of a spring (20) is slidably mounted. Bolt lock according to claim 1, characterized in that the first Trough (14) on at least one side wall (36, 38, 40) one over the outer Wall plane (z. B. 24) projecting nose (26), which when pressing in first trough (14) into the cutout (16) of the thin wall (12) in the wall plane (24) can retreat against spring force and forms a surface (30, 130) that after pressing on the inner surface (72) or edge of the cutout (16) jamming. Bolt lock according to one of claims 1 - 2, characterized in that the first trough (14) on the side facing the latch (54) in the side wall (42) forms an opening (32) through which the second trough (18) with its bolt (54) slidably passed through. Bolt lock according to claim 3, characterized in that the first Trough (14) has an edge at the upper end of the side wall (40) facing away from the bolt (43) forms, which extends into the lumen of the first trough (14) so far that it receded second trough (18) a grip surface (41) for opening the door (12) or the like. Bolt lock according to claim 3 or 4, characterized in that the first trough (14) forms a cover (34) which over the side walls (36, 38, 40, 42) the first trough (14) projects outwards on all sides and after being pressed into the Cutout (16) rests in the thin wall (12) on the edge of the cutout. Bolt lock according to claim 5, characterized in that the lid (34) has an opening (44) for reaching into the second trough (18), which Opening is arranged so that when the second trough (18) has receded Forms rear grip surface (41) for opening the door (12) or the like. Bolt lock according to one of claims 1-6, characterized in that that the two opposite side walls (36, 38) of the first trough (14), which form a sliding guide for the second trough (18), two perpendicular to the Form incisions leading away from the cover level, which form a tongue with holding surfaces (130) enclose which holding surfaces (130) up to the lower edge of the lid edge pass. Bolt lock according to one of claims 1-6, characterized in that the side wall (40) of the first trough (14) opposite the bolt (54) incisions (78, 80) leading away perpendicularly from the plane of the cover, the one Enclose tongue that extends close to the lower edge of the lid. Bolt lock according to one of claims 1-6, characterized in that that the first trough (14) on the side facing the latch (54) two of the End faces of the two side walls (36, 38) perpendicular thereto, inclined upwards in Direction of the thin wall (12) extending lugs (70) which is close to the Level (72) of the thin wall (12) end and between them the second trough with the Slide the latch (54) into place. Bolt lock according to one of claims 1-9, characterized in that the free end (30, 130) of the tongue forms a bevel that is corrugated (76) can have this bevel at the lower edge of the cutout in the thin wall (12) and the first trough (14) in the cutout (16) holds in place. Bolt lock according to claim 10, characterized in that between the Outer surface of the wall (48) facing away from the bolt, the inner trough (18) and the inner surface of the wall of the outer recess (14) facing away from the bolt (54) Compression spring, such as spiral spring (20) is arranged. Bolt lock according to one of claims 1-11, characterized in that the outer surface of the wall of the inner trough (18) facing away from the bolt (54) has an approach (86) for receiving one end of the coil spring (20). Bolt lock according to one of claims 1 to 12, characterized in that that the bottom of the outer trough (14) has an opening (88) into which one of projection (92) projecting into the bottom (86) of the inner trough (18) in such a way that he the pushing movement of the inner trough (18) within the outer trough (14) limited in at least the direction to the bolt (54). Bolt lock according to one of claims 1-13, characterized in that the projection (92) has the shape of a ramp in longitudinal section, the inclined Ramp line is directed away from the bolt (54). Bolt lock according to one of claims 1-14, characterized in that in the outer trough (14) an inner trough (18), each with the shape of Frame or the like. (58) adapted locking device (18) can be used. Bolt lock according to one of claims 10-15, characterized in that that the compression spring (20) on the locking of the first trough within the Cutout (16) serving tongue supports and their spring action is strengthened.

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