DE29707200U1 - Door lock for bathroom or toilet doors - Google Patents

Description

Internal reference number 1997001 DE

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Title: Door lock for bathroom or toilet doors Description

The invention relates to a door lock for bathroom or toilet doors with a rotary knob arranged on the inside of the room and a display device arranged on the outside of the room for displaying the locking state and with an actuating rod which is connected in a rotationally fixed manner to the rotary knob, has a control cam for the lock bolt and is guided into the display device.

DE 41 09 633 C1 has made known a generic door lock, which serves as a retrofit kit for a deadbolt lock. In the aforementioned door lock, the indicator button located on the outside of the room is formed by a cylinder or truncated cone button, which has a marking, for example a colored dot or a label, on its outer circumference. When the rotary knob on the inside of the room is operated, the entire indicator button is rotated relative to a perforated panel covering the keyhole. The rotation limit for the open or closed position of the lock is located on the inside of the room and is integrated into the rotary knob, which requires a correspondingly voluminous design of the rotary knob. The tension-resistant connection between the indicator button and the rotary knob is made exclusively via the operating rod that is embedded in the two aforementioned components.

The object of the invention is to further develop a door lock of the type mentioned at the outset in such a way that the display can be made on the outside of the room without the entire display button having to be set in rotation via the operating rod, while nevertheless enabling a direct, tensile connection between the display button and the rotary knob.

The invention solves the problem by the teaching of claim 1.

DE 26 32 698 C2 describes a door fitting with a latch actuation mechanism, in which the indicator button has a cover cap between which and the door leaf an indicator panel is arranged; in this case, however, the lower part of the indicator button resting on the door leaf is directly connected to the door leaf via corresponding screw connections, i.e. the connection between the indicator button and the actuation button on the inside of the door (not shown in DE 26 32 698 C2) is made exclusively via the actuation rod.

According to the teaching of claim 1, however, the rotary knob is supported indirectly on the door leaf via a lock housing that accommodates the control cam and the lock bolt, whereby the housing cover of the lock housing is connected to the cover cap of the indicator knob by means of screws that pass through the door leaf.

This creates an optimal, tensile connection between the display button and the rotary knob, which counteracts signs of wear and largely prevents manipulation of both the display button and the rotary knob.

Advantageous embodiments of the invention are characterized by the subclaims.

The features of sub-claims 2 to 4 are of particular independent importance; according to these, an elongated hole is arranged in the display panel, into which rotation limiting pins arranged on the cover cap fit, which have blind holes with an internal thread, into which screws that pass through the housing cover of the lock housing fit. The rotation limiting pins therefore advantageously have a dual function; on the one hand, they serve to limit the rotation of the display panel rotated by the operating rod, and on the other hand to provide a tensile connection between the rotary knob and the display knob. It goes without saying that the rotation limiting pins are arranged on the ceiling in such a way that the entire door lock can be used for left and right connection.

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The door leaf - for example a glass door - has a hole or bore in the usual way according to claim 5, through which the operating rod passes. In this case, a plate covering the hole or bore is advantageously arranged on the inside of the room between the lock housing and the door leaf and on the outside of the room between the indicator button and the door leaf, whereby - for example when using a glass door - additional intermediate layers that increase the frictional connection can be arranged between the aforementioned plate and the actual door leaf. The indicator button itself has a cover cap that is approximately U-shaped in cross section, which is supported directly or indirectly on the door leaf with its U-legs, whereby the U-legs are inclined towards the door leaf in such a way that the indicator button has an undercut directed towards the door leaf according to claim 6.

In the middle of the cover cap there is a circular hole or opening into which a rotating sleeve that can rotate relative to the cover cap is inserted, so that according to claim 7 the operating rod is inserted into this rotating sleeve in a rotationally fixed manner, the rotating sleeve in turn being connected to the display panel in a rotationally fixed manner.

On the inside of the chamber, the rotary knob is supported on the housing cover of the lock housing; the wall of the housing cover has a bore in which the control cam is rotatably mounted with a pin-shaped projection (claim 8), with a bushing advantageously being arranged in this bore, i.e. between the wall of the housing cover and the control cam.

The control cam, which is connected to the actuating rod in a rotationally fixed manner, has a switching nose that corresponds to the corresponding counter surfaces arranged on the lock bolt.

The lock bolt itself, which is guided in the housing cover, has a widened bolt head, according to claim 11, via which it is guided in parallel sliding guides of the housing cover of the lock housing, whereby according to claim 12, sliding bearings are provided between the bolt head and the housing cover of the lock housing. The material required for the sliding bearings

The material used depends on the material of the lock housing or the lock bolt; when using aluminum or alloyed steel for the lock housing or bolt, a plastic alloy is recommended as a plain bearing.

In a further advantageous embodiment of the invention, according to claim 13, the locking head of the lock bolt has a recess that accommodates the control cam and has stop surfaces that interact with the switching nose of the control cam. The recess or the stop surfaces of the locking head are advantageously designed so that the door lock can be used both for right-hand and left-hand use.

In a manner known per se, the rotary knob of the device according to the application can have a display device (claim 14) and the display knob can be assigned an emergency opening device (claim 15), which can, for example, be part of the socket rotatably mounted in the cover cap.

The door lock according to the invention is suitable for use with both hinged doors and sliding doors. Advantageous design features of the invention for use with sliding doors are characterized by claims 16 to 21. Here, it was taken into account that reliable locking or unlocking should be achieved by a movement of the lock bolt that is orthogonal to the direction of movement of the door.

According to claim 6, the lock bolt is therefore designed as a slider guided vertically in the lock housing, whereby the slider has a locking element at its end facing away from the bolt head that corresponds to a bolt receptacle arranged on a wall, a glass wall and/or a stop profile. When the switching nose is actuated by means of the actuating rod, the bolt, which now functions as a slider, is displaced vertically relative to the lock housing in such a way that, when the sliding door is closed, either locking or unlocking can take place. The optional locking or unlocking

Unlocking is carried out by an additional locking element, which is arranged at the free end of the slide.

Accordingly, according to claim 16, the locking receptacle consists of a plate-like, essentially U-shaped locking plate, wherein a U-leg of the locking plate has at its free end a locking extension directed towards the second U-leg in such a way that the slide with the locking member engages behind the locking extension.

In an embodiment of the technical teaching according to claim 17, the second U-leg has a stop at its free end, which serves to limit the path of the sliding door; this stop can be designed and dimensioned in such a way that the lock housing, for example, serves as a counter stop.

The locking member itself arranged at the free end of the slider advantageously has a hook-like extension with which it engages behind the locking extension of the locking plate (claim 19).

Since the slider, as described above, carries out a vertical relative movement with respect to the associated lock housing, it is proposed according to claim 20 that locking devices are arranged between the lock housing and the slider, locking the slider with respect to the lock housing in at least two locking positions. In some of these locking positions, the user of the door lock is not only given the feeling of having completely unlocked or locked the lock; in particular in the unlocked position, this ensures that the slider is perfectly held in place with respect to the lock housing.

In order to be able to provide the user of the door lock with additional certainty as to whether the door is locked or not, it is further proposed according to claim 21 that at least the locking extension of the strike plate and the hook-like extension of the locking member are arranged visibly on the inside of the door.

The fastening or arrangement of the strike plate itself on a wall adjacent to the sliding door, for example a glass wall

and/or a suitable stop profile is at the discretion of the specialist or the respective local conditions.

The invention is explained in more detail below using two schematically illustrated possible embodiments. They show:

In a first embodiment:

Figure 1: a side view of the rotary knob Figure 2: a partially cut-away top view of the door lock Figure 3: a partial side view of the indicator knob

Figure 4: a view according to Figure 2 with modified latch holder

Figure 5: a view of the inner lock housing

Figure 6: a view in F ⁵ filing direction X according to Figure 7 of the inner lock housing

Figure 7: a completed section along the line A-B of Figure

6

Figure 8: a section along the line C-D of Figure 7 In a second embodiment:

Figure 9

and 10: a vertical arrangement of the door lock with a locking device associated with the lock bolt

In the individual figures, identical components have been provided with identical reference symbols where necessary.

In Figure 1, a door lock designated 1 is shown in a view of a rotary knob 3 having a handle profile 12, which is supported on a lock housing 5. 6 designates a lock bolt that fits into the bolt receptacle 7.

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The top view according to Figure 2 shows that the door lock 1 has on the inside of the room the rotary knob 3 supported on the lock housing 5 and on the outside of the room an indicator button 4 supported on a door leaf 2 and having an undercut 27. A lock bolt 6, shown in outline, engages in a recess 8 of the bolt holder 7, which is attached in a suitable manner to a wall 9 according to Figure 2.

Figure 3 shows a schematic view of the display button 4 with a viewing opening 10 and an emergency opening device 11, which is designed as a slot.

In Figure 4, instead of the wall designated 9, a glass wall 13 is provided, which is covered by a stop profile 14 so that the lock bolt 6 can engage in the recess 8 formed between the stop profile 14 and the bolt holder 7.

It is clear that the doors formed by the door leaf 2 are advantageously designed to be self-closing due to the one-sided actuation option arranged on the inside of the room.

In Figures 5 and 6, the lock bolt 6 is shown in two operating positions, Figure 5 showing the forward-locked position and Figure 6 the retracted position. The lock bolt 6 (see also Figure 7) is mounted in the lock housing 5, for which purpose a recess 37 is provided in the lock housing 5. The lock bolt 6 is guided with a widened bolt head 32 in this recess 37 on sliding guides 33, which form a sliding bearing 34 between the bolt head 32 and the wall of the lock housing 5, i.e. the housing cover 19. It is also clear that a control cam 15 arranged in a rotationally fixed manner on an operating rod 16 has a switching nose 31, which alternately rests against one of the two stop surfaces 36 of the bolt head 32 during the switching process. As Figure 6 shows, the locking head 32 is designed symmetrically to the cutting line A-B for the purpose of using a left-hand or right-hand version. According to Figures 5 and 6, the locking head practically forms a C-shaped hollow profile, the inner sides of which form stop surfaces 36 for the switching nose 31 of the control cam 15.

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As shown in Figures 7 and 8, the indicator button 4 has a cover cap 17 into which a rotating sleeve 28 is inserted that can rotate relative to the cover cap 17. The rotating sleeve 28 is non-rotatably connected to both the actuating rod 16 and an indicator disc 18. The indicator disc 18 has several rotation limiting pins 22 (see Figure 8) on its side facing the rotary knob 3, which are guided in an elongated hole 21 in the indicator disc 18. The rotation limiting pins 22 have a blind hole 24 with an internal thread 23 into which the screws 20 that pass through the wall 29 of the housing cover 19 can be screwed. The housing cover 19 and the cover cap 17 are clamped together by means of the screws 20, whereby plates marked with are clamped between the door leaf 2 and the cover cap 17 or the door leaf 2 and the housing cover 19, which cover the opening 25 in the door leaf 2.

Figure 7 further shows that the control cam 15 is fitted with a pin-like projection into a bore in the wall 29 of the housing cover 19, with a bushing designated 30 being provided in the area of the bore.

While the embodiment according to Figures 1 to 8 is primarily suitable for revolving doors, the embodiment according to Figures 9 and 10 relates primarily to use with sliding doors.

Figure 9 shows a sliding door, designated 51, which can be moved in the direction of the arrow Y. The door lock arranged on the sliding door 51 has the essential features described with reference to Figures 1 to 8. However, it differs in that the bolt 6 according to Figures 1 to 8 is designed as a slide 38 guided vertically in the lock housing 5, which has a locking member 41 at its free lower end. The slide 38 is in its upper position in Figure 9, i.e. a hook-like extension 47 of the locking member 41 can freely pass through the opening 15 in a locking plate, so that the sliding door 51 shown in the closed position can be opened. The locking plate 39 is formed by an approximately U-shaped plate, the lower U-leg of which in the plane of the image

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42 has a locking extension 44 at its free end 45, which corresponds to the hook-like extension 47 of the locking member 41.

The upper U-leg 43 in the image plane has a stop 52 made of a suitable material at its free end 46. As can be seen from Figures 9 and 10, in the embodiment shown the counter stop can be formed by the lock housing 5 itself. The displacement path of the sliding door 51 is thus limited and fixed.

Figure 10 shows the slide 38 with the locking member 41 in the pre-closed position, i.e. the hook-like extension 47 of the locking member 41 has been displaced into the area of the locking receptacle 7 in the direction of arrow Z.

As can be seen from Figures 9 and 10, locking devices 48, 49 are provided on the slide 38, which in the exemplary embodiment consist of card-shaped recesses arranged on the slide 38. These card-shaped recesses interact with a locking cam 53 arranged on the lock housing 5, so that it is ensured that the slide 38 is reliably secured in its forward-locked or retracted position relative to the lock housing 5.

Figures 9 and 10 also show that the switching nose 40 is wider than the embodiments according to Figures 1 to 8; this serves to further reduce noise when handling the actuating rod 16.

Reference symbol Door locking 1 Door leaf 2 Rotary knob 3 Display button 4 Lock housing 5 5 bolt 6 Latch holder 7 Recess in latch holder 8th Wall 9 Viewing opening 10 10 Emergency opening device 11 Grip profile 12 glass wall 13 Stop profile 14 Control cam 15 15 Operating rod 16 Cover cap 17 Display window 18 Housing cover 19 Screws 20 20 Long hole 21 Rotation limiting pin 22 inner thread 23 Blind hole 24 Opening in the door leaf 25 25 plate 26 Undercut 27 Rotating sleeve 28 Wall 29 Rifle 30 30 Switch nose 31 Latch head 32 Sliding guides 33 bearings 34 35

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35 Recess 36 Stop surfaces 37 Recess 38 Slider 5 39 Strike plate 40 Schaitnase 41 Locking link 42 U-leg 43 U-leg 10 44 Rib process 45 free end of the U-leg 46 free end of the U-leg 47 hook-like appendage 48 Locking device 15 49 Locking device 50 penetration 51 sliding door 52 attack 53 Locking cams 20 X Arrow direction Y Arrow direction Z Arrow direction

Claims (21)

Expectations 1. Door lock for bathroom or toilet doors with a rotary knob arranged on the inside of the room and a display device arranged on the outside of the room for displaying the locked state, with an actuating rod connected to the rotary knob in a rotationally fixed manner and having a control cam for the lock bolt that extends into the display device, characterized in that the display device is designed as a display button (4) which has a cover cap supported directly or indirectly on the door leaf (2) and provided with a viewing opening (10). (17), wherein between the cover cap (17) and the door leaf (2) there is arranged an indicator disc (18) connected in a rotationally fixed manner to the actuating rod (16), that the rotary knob (3) is supported indirectly on the door leaf (2) via a lock housing (5) receiving the control cam (15) and the lock bolt (6), and that the housing cover (19) of the lock housing (5) is connected to the cover cap (17) of the indicator knob (4) by means of screws (20) passing through the door leaf (2). 2. Door lock according to claim 1, characterized in that rotation limiting pins (22) are arranged on the cover cap (17) and pass through an elongated hole (21) arranged in the display panel (18). 3. Door lock according to claims 1 and 2, characterized in that the rotation limiting pins (22) have a blind bore (24) provided with an internal thread (23). 4. Door lock according to one of claims 1 to 3, characterized in that the screws (20) which pass through the housing cover (19) of the lock housing (5) engage in the blind holes (24) of the rotation limiting pins (22). 5. Door lock according to one of claims 1 to 4, characterized in that in the door leaf (2) there is an opening (25) or bore for the passage of the actuating rod (16) and that a plate (26) covering the opening (25) or bore is arranged on the inside of the room between the lock housing (5) and the door leaf (2) and on the outside of the room between the display button (4) and the door leaf (2). 6. Door lock according to one of claims 1 to 5, characterized in that the indicator button (4) has a (2) directed undercut (27). 7. Door lock according to one of claims 1 to 6, characterized in that the actuating rod (16) is inserted in a rotationally fixed manner into a rotary sleeve (28) which is rotatably mounted in the cover cap (17) and is rotationally fixedly connected to the indicator disc (18). 8. Door lock according to one of claims 1 to 7, characterized in that the control cam (15) is rotatably mounted in a wall (29) of the housing cover (19) of the lock housing (5). 9. Door lock according to claim 8, characterized in that a bushing (13) is arranged between the wall (29) of the housing cover (19) and the control cam (15). 10. Door lock according to one of claims 1 to 9, characterized in that the control cam (15) has a switching nose (31) corresponding to the lock bolt (6). 11. Door lock according to one of claims 1 to 10, characterized in that the lock bolt (6) with a widened bolt head (32) is guided in parallel sliding guides (33) of the housing cover (19) of the lock housing (5). ⁵ Λ 12. Door lock according to one of claims 1 to 11, characterized in that a sliding bearing (34) is arranged between the locking head (32) and the housing cover (19) of the lock housing (5). 13. Door lock according to one of claims 1 to 12, characterized in that the bolt head (32) of the lock bolt (6) has a recess (35) which receives the control cam (15) and which has stop surfaces (36) which interact with the switching nose (31) of the control cam (15). 14. Door lock according to one of claims 1 to 13, characterized in that the rotary knob (3) has a display device. 15. Door lock according to one of claims 1 to 14, characterized in that the display button (4) has an emergency opening device (11). 16. Door lock according to one of claims 1 to 15, characterized in that the lock bolt (6) is designed as a slide (38) guided vertically in the lock housing (5) and has at its end facing away from the bolt head a locking member (41) corresponding to a bolt receptacle (7) arranged on a wall (9), a glass wall (13) and/or a stop profile (14). 17. Door lock according to claim 16, characterized in that the locking receptacle (7) consists of a plate-like, essentially U-shaped locking plate (39), whereby a U-leg (42) has at its free end (45) a locking extension (44) directed towards the second U-leg (43) in such a way that the slider (38) with the locking member (41) engages behind the locking extension (44). 18. Door lock according to claim 17, characterized in that the second U-leg (43) has a stop (52) at its free end (46). 19. Door lock according to claims 16 and 17, characterized in that characterized in that the locking member (41) of the slide (38) engages behind the locking extension (44) with a hook-like extension (47). 20. Door lock according to claim 16, characterized in that locking devices (48, 49, 53) are arranged between the lock housing (5) and the slide (38) to lock the slide (38) relative to the lock housing (5) in at least two locking positions. 21. Door lock according to claim 16, characterized in that at least the locking extension (44) of the locking plate (39) and the hook-like extension (47) of the locking member (41) are arranged visibly on the inside of the door.