EP2264265B1 - Mortise lock - Google Patents

Description

The invention relates to a mortise, in particular for installation in tubular frame doors, with a follower for receiving the axis of one or more pushers, a latch and a Fallenschwenkhebel, which is pivoted by the pusher and attacks with its free end to a latch tail to the case in to be able to withdraw the housing of the mortise lock.

Such mortise locks are preferably installed in tubular frame doors. For such locks, which are to have on both sides of a door handle for actuating the lock, different functions, they are equipped with one-piece or with two independent lock nuts, each of which cooperates with a respective door handle. By way of example, such locks can be used in an escape door when e.g. the door should be open with the latch extended from the inside at any time via the handle and without key use while the pusher on the outside of the door with idle latch is in the idle state.

Such locks are for example from the EP 0 537 531 B1 or the EP 1 437 464 A2 known. There is described a lock with split nut, in which the inner nut and the outer nut are executed functionally identical. Depending on the position of the coupling slide, however, either the inner nut and the outer nut are in operative connection with the nut central part or, depending on the design of the coupling slide, only the inner nut.

Although the castle is after EP 0 537 531 B1 Standardized mortise locks for use in tubular frame doors (DIN 18251-2) can also be equipped with a latch bolt and a latch bolt EP 1 437 464 A2 ).

In today's panic - tubular frame lock constructions, secure fitting in the handle area is only guaranteed with high assembly costs. This is due to the lack of lock openings in the area of the fitting points. These openings are not present because common panic locks for tubular frame constructions require this space for mechanical lock components.

Today, almost all fittings for tubular frame profiles are fastened to the profile by means of rivet nuts or similar fastening material, so that actuation and tensile forces are transmitted directly to the profile, which in turn leads to a reduced service life of the fittings. Much safer would be fixing the fitting halves against each other, since here the operating forces can be absorbed by the fitting. In addition, the fitting of the fitting halves against each other improves the fit of these fitting halves to one another, which is of particular importance when using split pusher axes in order to be able to provide long-term functional capability. For this, however, the fastening screws must pass through the housing of the mortise lock.

It is also known that the accommodation of a translationally moving lock latch in addition to the bolt in the same lock box cross-section is very difficult to implement. This is even more true if more Lock functions, such as a lockable trap with increased exclusion, are to be integrated. In addition, arranged on both sides door handle must be stably connected to the door leaf and the mortise. For the above reason, through-bolts can not be used, since the lock is filled with functional components and there is no space for the passage of the screws.

From the EP 1 020 594 A2 is known a drive rod lock, which has a projection-shaped, rounded latch pivot lever.

From the US 2007/0113603 A1 a mortise lock is known, which has a latch pivot lever with a part-circular curved portion.

From the DE 36 05 826 A1 is a drive rod lock with a rack known, which cooperates with a nut and is acted upon by two helical compression springs. From the DE 195 14 742 A1 is a tubular frame lock with a spring-loaded pusher known.

The invention has the object of providing a mortise lock of the type mentioned in such a way that the pusher is better fastened to the tubular frame.

This object is achieved by a mortise lock with the features of claim 1.

Due to the inventive design of the mortise the circumstance is achieved that above the follower no functional components are present because the Fallenschwenkhebel or the nut center part does not sweep this area, but due to the bent or bent configuration of the Fallenschwenkhebels this does not project directly from the nut in the direction of the tail tail, but then from the nut in the direction of the trap and due to the bend or the kink then gradually pointing in the direction of the trap tail. The bend or the kink allows grasping the area located above the pusher nut. This area serves to ensure that the fixing screws located at the panels of the pusher, which run transversely through the tubular frame, can pass through the mortise lock without hindering functional components. The mounting screws for the pusher extend right above and below the follower transversely through the housing of the mortise lock. Therefore, there are also no functional components in the mortise lock in the area below the handle nut.

According to the invention it is provided that the follower has a radially projecting hook in which a pull rod or a suspension eye of a pull rod is mounted, and the pull rod is loaded by at least one compression spring such that the pull rod urges the pusher against the opening direction. In a two-part pusher, two tie rods are provided, which engage on a respective compression spring. In this way, each of the two pusher nut halves is urged independently of the other pusher half in their respective rest position.

The invention provides compact design, the integration of pusher retaining springs and nut spring in the smallest space and thus the possibility of secure fitting assembly. By this arrangement, the processing time for tubular frame profiles and the Assembly time of fittings can be significantly reduced. Furthermore, the life of the fittings is increased.

For receiving and supporting the compression spring, a spring housing is provided, in which a compression spring or in the case of a split pusher the two compression springs are arranged. This spring housing is made of a material which is particularly low friction against the compression spring, for example made of PTFE. The spring housing also has the advantage that the compression spring can be mounted in advance with the associated pull rod and the spring housing with compression spring and pull rod is a separately manageable component. In addition, the spring housing can be equipped with springs of different spring rate, so that different heavy pushers can be accommodated.

According to the invention it is further provided that the spring housing supports the compression spring in a direction parallel to the floor or to the ceiling of the housing of the mortise lock.

According to the invention it is further provided that the drawbar passes through the compression spring. This has the significant advantage that the pull rod prevents buckling of the compression spring. In addition, the spring length can be used to the maximum, resulting in small spring rates.

Furthermore, the pull rod is attached to the compression spring at the end remote from the presser end. In this way, the compression spring can be loaded to block, without them or other components of the mortise damage. The compression spring is supported by the spring housing.

It is further provided that the pull rod is fastened by means of a bayonet lock on the compression spring. In this case, the bayonet lock on a voltage applied to the end face of the spring plate, wherein the plate has a deviating from the circular opening and the free end of the pull rod has a cross section corresponding to the opening. The free end is flattened for example by a pressure and has hammer-like protruding ends. Accordingly, the opening in the plate is slot-shaped, so that the free end can be pushed through the opening. If, for example, the pull rod is rotated by 90 °, then the free end is locked behind the plate, since it can no longer be pulled out of the opening. Other variants for the opening in the plate and the cross section of the free end of the pull rod are conceivable.

Another variant provides that the free end of the pull rod is angled in particular by 90 °. Also this end can, as soon as the plate is threaded onto the pull rod, no longer be pulled out of the opening of the plate.

Finally, a further, preferred variant of the invention provides that the free end of the pull rod is provided with an external thread and a screw nipple is screwed onto this external thread, which is supported on the press remote end of the compression spring. The drawbar and the screw nipple are designed in the manner of a bicycle spoke, which is attached to a rim. By more or less wide screwing the screw nipple on the free end of the drawbar, the spring tension can be adjusted in the rest position. Both the assembly and the adjustment of the screw nipple on the drawbar can be easily performed.

A further development of the mortise lock according to the invention provides that the spring housing has a tab corresponding to the thickness of the housing, which protrudes laterally from the spring housing into the area above the presser nut. This tab has an opening that is vertically above the axis of the pusher. If a pusher is attached to the tubular frame, then the fastening screw passes through the opening of this tab, whereby not only the fastening screw is additionally supported, but also the mortise lock on the door leaf or on the tubular frame of the door and the two fittings are fixed together. Since the tab has a thickness which corresponds to the distance from the bottom and the ceiling of the housing of the mortise, high fastening or fixing forces can be transmitted.

A further fixation of the spring housing is achieved in that the spring housing has at least one projecting in the direction of the bottom and / or the ceiling of the housing of the mortise pin, which in a corresponding opening in the floor and / or in the ceiling of the housing of the mortise lock engages. In this way, the force acting on the spring housing forces can be easily derived in the housing of the mortise. A further attachment of the spring housing is not required, so that this is connected only by means of plug-in connections with the housing of the mortise lock.

Further advantages, features and details of the invention will become apparent from the subclaims and the following description in which, with reference to the drawing, a particularly preferred embodiment is described in detail. The features mentioned in the drawing and in the description as well as in the claims may each be essential to the invention individually or in any desired combination.

Figur 1

eine perspektivische Ansicht des Einsteckschlosses bei abgenommenem Gehäusedeckel;

Figur 2

eine perspektivische Ansicht einer vergrößerten Wiedergabe des Federgehäuses; und

Figur 3

das Federgehäuse gemäß Figur 2 mit Blick in Richtung des Pfeils III.

In the drawing show:

FIG. 1

a perspective view of the mortise lock with removed housing cover;

FIG. 2

a perspective view of an enlarged view of the spring housing; and

FIG. 3

the spring housing according to FIG. 2 looking in the direction of the arrow III.

In the FIG. 1 is denoted by the reference numeral 10 a total of a mortise lock, which is used for example in tubular frame doors (not shown). In order to see the functional components of the mortise lock 10, the ceiling of the lock housing 12 is removed and only the bottom 14 recognizable. In the lock housing 12 is a two-part pusher 16 mounted rotatably, and it is hinted at the remote from the viewer pusher 18 shown with a dashed line, with which also facing away from the viewer associated Nusshälfte is actuated. Between the two nut halves is a nut center part 20 with a latch pivoting lever 22, which immediately assumes its rest position and is pivoted in the clockwise direction when the pusher 18 is pressed. The free end 24 of the Fallenschwenkhebels 22 protrudes into the sliding range of a latch tail 26 of a case 28 and is when pivoting the Fallenschwenkhebels 22 at a Fallenschwanzende 30 and pulls in this way the case 28 into the lock housing 12 a.

It can be clearly seen that the latch pivot lever 22 is bent or kinked and consists of two sections 32 and 34, which enclose an angle α to each other, which is between 90 ° and 180 °, and in particular 140 °. In addition, it can be seen that the portion 32 protrudes from the pusher 16 in the direction of the case 28 and with respect to the longitudinal axis 36 of the mortise lock an angle β of 30 °. The section 34 then extends approximately parallel to the longitudinal axis 36.

Due to the kinked design of the Fallenschwenkhebels 22 and the lateral projection of the follower 16, a region 38 is provided above the pusher 16, which is free of functional components of the mortise 10. Above the pusher 16 can, as from the FIG. 1 recognizable, a spring housing 40 are used, wherein the spring housing 40 is provided with a protruding into the region 38 tab 42. This tab 42 has an opening 44 which is aligned in the direction of the longitudinal axis 36 to the axis 46 of the follower 16. In addition, the width is 48 of Spring housing 40 and thus also the tab 42 chosen so that the spring housing 40 is without play between the bottom 40 and the (not shown) ceiling of the mortise 10. The pusher 18 can now be optimally secured by means of fastening screws on the tubular frame of the door, since the fastening screw can pass through both the tubular frame of the door and the mortise 10 through the opening 44. As a result, much higher forces can be supported than when using rivet nuts. In addition, the fitting is optimally fixed.

In spring housing 40 is one or are parallel to each other two compression springs 50 housed, by a pull rod 52 (FIG. FIG. 3 ) are penetrated. This pull rod 52 ends with its end 6 close to the presser end in a suspension eye 56, in which hooks 58 projecting radially from the presser foot 16 are suspended. In the FIGS. 2 and 3 the spring housing 40 is shown enlarged and the suspension eye 56 is continued in two tie rods 52 which pass through two parallel in the spring housing 40 arranged side by side compression springs 50. The push-remote end of the pull rod 52 is provided with an external thread on which a screw nipple 60 is screwed. Further, it can be seen that the compression spring 50 is supported by two housing walls 62 and 64, so that when compressing the compression spring 50, this can not buckle. Another support undergoes the compression spring 50 through the bottom 14 and the (not shown) ceiling of the mortise 10 and by, the compression spring 50 axially cross-tie rod 52nd

Furthermore, it can be seen that the spring housing 40 in the direction of the bottom 14 and the ceiling of the mortise 10 projecting pins 66 and 68 which in corresponding openings in the bottom 14 and the ceiling intervention. Therefore, there is no need for further fixing, in particular screwing, riveting or the like, of the spring housing 14 in the mortise 10. Furthermore, a pin 70 can be seen, which protrudes from the outside of the inwardly facing housing wall 64 in the direction of the Fallenschwanzendes 30. This pin 70 serves to support a case extension spring 72.

It can be clearly seen that due to the free area 38 and arranged in this free area 38 tab 42 with opening 44 of the spring housing 40 optimal fixation of the fitting with pusher 18 on the tubular frame door is possible because the fitting screws both above the pusher 16 as even below this, the mortise lock 10 can completely pass through. This design of the mortise lock 10, the processing time for tubular frame profiles and the assembly time of fittings can be significantly reduced. Furthermore, the life of the fittings is increased.

Claims (7)

1. A mortise lock (10), in particular a panic lock, preferably for installation in tubular frame doors, having a pusher nut (16) for accommodating the axle (46) of the pusher (18), a latch (28), and a latch pivoting lever (22), which is pivoted by the pusher nut (16) and with its free end (24) contacts a latch tail (26) so as to be able to insert the latch (28) into the housing (12) of the mortise lock (10), whereby the latch pivoting lever (22) is bent or kinked, and the arc-shaped latch pivoting lever (22) protrudes from the pusher nut (16) in the direction of the latch (28) and encompasses the area (38) that is situated above the pusher nut (16), whereby the pusher nut (16) has a radially protruding hook (58), in which a mounting eyelet (56) of a connecting rod (52) is suspended, and the connecting rod (52) is stressed by at least one pressure spring (50) in such a way that the connecting rod (52) presses the pusher nut (16) opposite the opening rotational direction, and the at least one pressure spring (50) is arranged in a separate spring housing (40), which supports the pressure spring (50) in a direction parallel to the base (14) or to the cover of the housing (12) of the mortise lock (10), characterized in that the connecting rod (52) penetrates the pressure spring (50) and is attached at the end of the pressure spring (50) that is away from the pusher nut, whereby the connecting rod (52) is attached by a bayonet lock to the pressure spring (50).
2. The mortise lock as recited in Claim 1, characterized in that the bayonet lock has a plate that contacts the end face of the pressure spring (50), the plate has an opening that deviates from the circular, and the free end of the connecting rod (52) has a cross-section that corresponds to the opening.
3. The mortise lock as recited in Claim 1, characterized in that the free end of the connecting rod (52) is bent up at a 90° angle.
4. The mortise lock as recited in Claim 1, characterized in that the free end of the connecting rod (52) is furnished with an exterior thread, and a screw nipple (60) is screwed onto this exterior thread, the screw nipple being supported at the end of the pressure spring (50) that is away from the pusher nut.
5. The mortise lock as recited in any of the preceding claims, characterized in that the spring housing (40) has a thick bracket (42) that corresponds to the thickness (48) of the housing (12) and that protrudes into the area (38) above the pusher nut (16).
6. The mortise lock as recited in Claim 5, characterized in that the opening (44) of the latch (42) is situated vertically above the axle (46) of the pusher (18).
7. The mortise lock as recited in any of the preceding claims, characterized in that the spring housing (40) has at least one pin (66, 68) that protrudes in the direction of the base (14) and/or the cover of the housing (12) of the mortise lock (10) and that engages in a corresponding opening in the base (14) and/or the cover of the housing (12) of the mortise lock (10).

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