EP1263010B1 - Key switch with cable control - Google Patents

Description

The invention relates to a cable pull key switch according to the preamble of claim 1.

Such key switches normally work in such a way that after insertion the key and turning the lock cylinder in one or another direction an electrical switch is operated, which is via a electric drive circuit turns on a motor, for example coupled with a movable gate that can be opened or closed is that it opens the gate in one direction of rotation when the operator is in motion the gate closes when the drive is in the other direction of rotation. such Key switch, as known for example from DE-AS 22 08 019 are mainly used to open and close garage doors by means of a security key inserted into a profile half cylinder lock, where the key is only in a single, preferably middle position can be inserted or removed, in all others Rotary positions, however, are not deducted from the lock can.

This property of key switches is used in a well-known cylinder lock (DE 44 07 678 A1) used to dismantle the Allow key switch only if the security key inserted in the cylinder lock and the switch bit of the lock the insertion or withdrawal position of the key has been unscrewed is.

In order to prevent the gate from failing in the event of electrical control failure It has already become known that the hand can be opened by means of the Key unlocking, which is a hand opening of the Tores allowed. One way of mechanical emergency release from electrically operated door or gate drives is that the unlocking mechanism via a Bowden cable with the housing of the Key switch connected and by a rotatable threaded pin, which is arranged in the housing of the key switch, over the Bowden cable can be triggered. The rotatable threaded pin is from the Front of the housing through an opening in the front panel accessible. So that the mechanical emergency release mechanism does not can be operated by unauthorized persons, is in between the operating hole the front plate and the tool insertion opening of the threaded pin in the key insertion or withdrawal position of the lock cylinder one Inserted tab that inserts a tool into the corresponding one Actuating opening of the threaded pin is prevented. Only when the locking cylinder by means of the inserted key from the insert or trigger position rotated a bit in one direction or the other the tab from the tool insertion opening in the front panel moved so that the emergency operating tool through the opening in the Front plate are inserted into the actuation opening of the threaded pin can.

A disadvantage of the known construction is that on the lock cylinder special locking tab must be mounted and that of the front panel accessible locking tab easily drilled through with a drill can be, which then the emergency release without inserting the key becomes accessible.

The aim of the present invention is a cable pull key switch to create the genus mentioned at the beginning Safe prevention without structural changes to the cylinder lock mechanical emergency operation with the key removed is. In particular, the cable pull key switch according to the invention for the use of standard profile half-cylinder locks be suitable.

To solve this problem, the characteristics of the characteristic part of claim 1 provided.

The idea of the invention is therefore to be seen in the fact that an element of a usual cylinder lock, in particular profile half cylinder lock, namely whose beard is used in the key withdrawal or -Inserting position of the lock cylinder with the holding pin in such a Interaction occurs that - although accessible from the outside - it does not can be moved out of its normal position. In other words becomes the angular position of the beard in the key withdrawal or insertion position of the locking cylinder used in the normal position to block the mechanical emergency operating device. A Unlocking is done simply by turning the locking cylinder inserted key from the key withdrawal or insertion position in one direction or another.

Since considerable mechanical actuation forces are exerted on the holding pin need to be intercepted by the front panel and the case are, the embodiment according to claim 2 is appropriate.

By the embodiment according to claim 3, an axial movement of the holding pin when in the key removal or insertion position of the Lock cylinder effectively prevented. The stop is useful here formed by a recess in the circumference of the holding pin.

The design of the holding pin as a threaded pin is particularly preferred according to claim 4. By unscrewing the threaded pin from its hole in the front panel or the reinforcement approach considerable mechanical tensile forces on the emergency operating device be exercised.

The interaction between the beard of the cylinder lock and the threaded pin is expediently provided by providing a recess on the circumference of the threaded pin according to claim 5.

In this embodiment, it is useful if the beard is only in one one-sided recess of the threaded pin engages according to claim 6, because this already results in a rotary movement of the threaded pin in the trigger or insertion position of the locking cylinder is effectively prevented.

According to claim 7, the holding pin provided according to the invention can also be used to disassemble the key switch Allow the front panel to be removed without using a key. By doing namely the retaining pin cooperates with the stop surface fixed to the housing, prevent the stop and the counter surface on the housing removing the front panel after loosening the fastening screw. Only when the key is inserted, the beard by twisting the key is released from the withdrawal or insertion position and the retaining pin is screwed out of the front plate so far that it is from the stop surface on the housing is free, such a pivoting the front panel relative to the housing possible that the stop of the counter surface is released.

The desired blocking of the mechanical Emergency operating device while preventing the Removal of the front panel from the housing achieved without a key inserted.

Advantageous further developments of this embodiment can be found in the Claims 8 to 12.

Advantageous practical developments of the invention are in the claims 13 to 23 defined.

Figur 1

eine Vorderansicht eines erfindungsgemäßen Seilzug-Schlüsselschalters bei abgenommener Verkleidungs- und Dichtplatte,

Figur 2

eine Vorderansicht des Gehäuses eines erfindungsgemäßen Seilzug-Schlüsselschalters bei abgenommener Frontplatte und herausgenommener Schalteranordnung,

Figur 3

eine entsprechende Vorderansicht wie Figur 2 bei eingesetzter Schalteranordnung und strichpunktiert angedeutetem Halbyzlinderschloß,

Figur 4

eine Rückansicht der Frontplatte mit daran vorgesehener Schalteranordnung,

Figur 5

eine teilweise geschnittene Seitenansicht eines erfindungsgemäßen Schlüsselschalters mit teilweise eingestecktem Schlüssel in der Schlüssel-Abzugs- bzw. -Einsteckposition des Schließzylinders und bei in der Normallage befindlichem Gewindezapfen,

Figur 6

eine zu Figur 5 analoge Ansicht bei in die Schalter-Betätigungsposition geschwenktem Bart des Profil-Halbzylinderschlosses, wobei sich der Gewindezapfen noch in seiner Normallage befindet und

Figur 7

eine zu Figur 6 analoge Ansicht, wobei jedoch der Gewindezapfen aus der Frontplatte in die Notentriegelungsposition herausgedreht ist.

The invention is described below, for example with reference to the drawing; in this shows:

Figure 1

a front view of a cable pull key switch according to the invention with the trim and sealing plate removed,

Figure 2

2 shows a front view of the housing of a cable pull key switch according to the invention with the front plate removed and the switch arrangement removed,

Figure 3

2 shows a corresponding front view as in FIG. 2 with the switch arrangement used and a half-byte lock shown in broken lines,

Figure 4

3 shows a rear view of the front panel with the switch arrangement provided thereon,

Figure 5

2 shows a partially sectioned side view of a key switch according to the invention with the key partially inserted in the key withdrawal or insertion position of the locking cylinder and with the threaded pin in the normal position,

Figure 6

a view similar to Figure 5 with the beard of the profile half-cylinder lock pivoted into the switch actuation position, the threaded pin still being in its normal position and

Figure 7

a view similar to Figure 6, but with the threaded pin is turned out of the front panel in the emergency release position.

According to the drawing, a cable pull key switch according to the invention a square front plate 11, which in a cuboid Housing 12 is inserted, from the lower wall 44 itself 5 a tab-shaped fastening projection at a distance from the front edge 46 30 extends upwards, in which a threaded bore 31 is located with a mounting hole 32 in the front panel 11 is axially aligned. As can be seen in Figure 5, the front panel 11 in the fully assembled state by a sealing plate 35 and a subsequent cladding plate 36 covered, which with the openings have corresponding openings in the front panel 11. The cover plate 36, the sealing plate 35 and the front plate 11 are thereby attached to the housing 12 that through the with the mounting hole 32 corresponding bores 33 of the sealing plate 35 and 34 the panel 36 a bolt 45 through the mounting hole 36 is screwed into the threaded bore 31.

A fastening tab 37 jumps from the rear of the front plate 11 in the interior of the housing 12 in front of which by means of a bolt 38 Profile half-cylinder lock 13 is attached. The front of the castle passes through an opening 14 complementary to it in the front plate 11 (Figure 1).

In the lock cylinder 19 of the profile half cylinder lock 12 is a security key 15 (Figure 5) can be inserted in the usual manner, namely only in the key withdrawal or - insertion position. In this is the beard 16 (Figure 5) of the castle in a vertically upward position.

From this position, the lock cylinder 19 and thus the beard 16 in 3, 4 with switches 17, 17 'to engage, which is provided on a plastic insert 42 are between the front plate 11 and the rear wall 39 of the housing 12 is located.

According to the invention are above the opening 14 for the profile half-cylinder lock 13 a bore 21 in the front panel 11 and corresponding Bores in the sealing or cladding panels on top 35, 36 provided. Immediately behind this hole 21 is to the Front plate 11, a reinforcement projection 43 is formed (Figures 4, 5), which has a channel 21 ′ aligned with the bore 21. The hole 21 and the channel 21 'are with a continuous internal thread provided, in which a threaded pin 22 is arranged, which with a Actuating head 22 '(Figure 5) from the front panel 11 or the trim panel 36 protrudes forward and has an Allen hole 40 (Figure 1) into which an Allen key 41 (Figure 3) can be inserted. The actuating head 22 'is also provided with a transverse slot 49 in which a tool or a coin is inserted for actuation can.

The head also has a marking 50 in the form of a red dot on, which cooperates with a counter mark 51 on the trim panel 36. The normal position is not reached until after screwing in the marking 50 is aligned with the counter marking 51 is.

The threaded pin 22 protrudes rearward from the reinforcement projection 43 before and extends in the fully screwed-in state (Figure 5) to almost to the rear wall 39 of the housing 12.

According to the invention, the threaded pin 22 has one in FIG. 5 shown normal position from the reinforcement projection 43 protruding area on one side a recess 24 which is radially from the outside to about Central axis of the threaded pin 22 is sufficient.

The threaded pin 22 is at least in the area of the recess 24 hollow (47) to the end near the rear wall 39 To create space for a stop thickening 20, which at the end of the a bore in the rear wall 39 of the housing 12 guided core 18 ' a Bowden cable 18 is attached. The rear end of the threaded pin 22, however, narrows again towards the cavity 47 narrow opening 48, which is only for the passage of the soul 18 'of Bowden cable 18 is sufficient. Through the recess 24, the soul 18 ' with the stop thickening 20 conveniently introduced into the cavity 47 become. The Bowden cable 18 provides an emergency operating device for one Not shown gate unlocking mechanism.

The dimensioning of the threaded pin 22 and its arrangement relative to the profile half-cylinder lock 13 are such that in the shown in Figure 5 Neutral position of the lock the beard 16 largely form-fitting enters recess 24, particularly the upper end surface 25 of the beard 16 is so close to the flat bottom of the recess 24 that a rotation of the threaded pin 22 is not possible.

The latter has between the actuating head 22 'and the holding pin 22 a constriction 52, which acts as a predetermined breaking point, such that when trying to force the retaining pin 22 out of its normal position unscrew, the actuating head 22 'breaks off.

The Bowden cable 18 is in an unillustrated manner with an emergency release for the gate operated by the key switch. Such an emergency release basically works in the following Wise.

Usually between the drive motor and the gearbox for the Door actuation provided a spring-loaded clutch, which means the Bowden cable 18 disengaged when the threaded pin 22 is unscrewed can be. This eliminates the attempted hand opening from Motor applied resistance, and the gate can now be manually be opened and closed.

It would also be conceivable to have the one at the rear end of the recess 24 Stop surface 23 on the holding pin 22 (FIG. 5) for blocking against To take advantage of moving out, especially if instead the thread shown in a different way from the front panel 11 movable retaining pin 22 would be used.

The function of the key switch described so far is as follows:

The threaded pin 22 is in the neutral position shown in FIG. 5 secured against unscrewing from the front plate 11 in that the beard 16 engages positively in the recess 24.

Now an emergency release of the operated by the key switch Tores take place, the key 15 is inserted into the lock cylinder 19 and twisted it in one direction or another until the beard 16 comes out of the recess 24 in the threaded pin 22. Now the threaded pin 22 can be inserted into the hex opening 40 inserted tool 41 are unscrewed from the front panel, whereby the soul 18 'of the Bowden cable 18 is taken to to operate the emergency release mechanism. That of the invention The key-operated gate can now be opened by hand become.

A renewed removal of the key 15 is only possible when the Threaded pin 22 back into that from FIG. 5 by means of the tool 41 screwed in the visible position and the marking 50 with the counter marking 51 has been brought into alignment.

In a development of the invention is above the end region of the threaded pin 22 on the housing a projection 29 is provided, one below Has stop surface 26, the housing-side at a short distance End region of the threaded pin 22 is opposite. At the bottom of the Mounting tab 37 is a stop protruding downward 27, which has a stop surface 28 on the rear side of the fastening projection 30 engages behind. The arrangement of the stop surface 26 and the stop 27 and the counter surface 28 are such that after Unscrew the bolt 45 from the threaded bore 31 of the fastening projection 30 a removal of the front panel 11 to the front is not possible because the front plate 11 from the position shown in Figure 5 can only be tilted so far that the end region of the threaded pin 22 abuts the abutment surface 26, which is not yet sufficient for the To release stop 27 from the counter surface 28. Only if now after plugging in the key and swinging the beard 16 out of the recess 24 of the threaded pin 22 by means of the tool 41 the front plate 11 is unscrewed that the end portion of the threaded pin 22 comes completely free from the counter surface 26 of the projection 29 (Figure 7), the front panel by one in the lower area of the Housing transverse axis are pivoted so far that the End region of the threaded pin 22 in the direction of arrow f in FIG. 7 can move, which after stepping out of the top of the Front plate 11 from the front opening of the housing 12, the stop 27 comes free from the counter surface 28 and now the front panel 11 with the parts arranged on it can be removed from the housing 22 can.

Instead of or in addition to the projection 29, it could also be through the through hole one for the soul 18 'around in the rear wall 39 Depression for the threaded pin 22 may be provided, the top wall would correspond to the stop surface 26.

The emergency actuation device according to the invention is obtained in this way an additional function as a component to prevent disassembly the key switch without a key inserted beforehand.

LIST OF REFERENCE NUMBERS

11

front panel

12

casing

13

Profile half cylinder lock

14

opening

15

key

16

beard

17

switch

17 '

switch

18

Emergency actuation device (Bowden cable)

18 '

soul

19

lock cylinder

20

stop thickening

21

drilling

21 '

channel

22

Retaining pin (threaded pin)

22 '

actuating head

23

attack

24

deepening

25

end face

26

stop surface

27

attack

28

counter surface

29

head Start

30

fixing projection

31

threaded hole

32

mounting hole

33

drilling

34

drilling

35

sealing plate

36

Facing tile

37

mounting tab

38

bolt

39

rear wall

40

Inbusöffnung

41

Allen key

42

Plastic insert

43

reinforcement approach

44

under wall

45

bolt

46

front wall

47

cavity

48

opening

49

slot

50

mark

51

Position indicator

52

Target breaking point (constriction)

f

arrow

Claims (23)

1. A cable pull key switch for electrical drives of moving apparatuses, in particular for electrical door or gate drives, having an unlocking mechanism which is actuable for the purpose of manual operation of the apparatus on a failure of the electrical drive, having a cylinder lock, in particular a profiled half-cylinder lock (13), secured in an opening (14) of a removable front plate (11) of a box-shaped housing (12), having a lock cylinder (19) into which a key (15) can be inserted from the outside which has a key bit (16) which can be rotated by means of the key (15) at the interior of the housing (12) and which acts on at least one electrical switch (17, 17') on the rotation of the key (15) inserted into the lock cylinder (19) from its removal or insertion position in the one or the other direction, wherein an elongate mechanical emergency actuation apparatus (18) such as a Bowden cable opens in the housing (12), is connected to the unlocking mechanism and is mechanically movable, preferably by means of a tool (41), from one side of the housing (12), preferably from the front side (19), in order to actuate the same, provided that the lock cylinder (19) is located in a pre-determined rotational position outside the key removal or insertion position,
   characterized in that
   the emergency actuation apparatus (18) has a holding spigot (22) which is movably arranged in a bore (21) of the front plate (11), preferably perpendicular thereto, and has a normal position in which the emergency actuation apparatus (18) is inactive and the lock cylinder (19) can be brought into its key removal or insertion position unimpeded by the holding spigot (22) and can only be moved out of the normal position into the unlocking position in order to move the emergency actuation apparatus when, and only when, the lock cylinder (19) is located outside the key removal or insertion position.
2. A key switch in accordance with claim 1, characterized in that a reinforcement shoulder (43) having a passage (21') continuing the bore (21) is provided in the region of the bore (21) at the rear surface of the front plate (11).
3. A key switch in accordance with claim 2, characterized in that the holding spigot (22) has an abutment (23) which lies axially behind the bit (16) with the holding spigot (22) in the normal position and the lock cylinder (19) in the key removal or insertion position, such that a moving of the holding spigot (22) out of the normal position is prevented and such that the abutment (23) is released from the bit (16) after the rotating of the lock cylinder (19) out of the key removal or insertion position such that the holding spigot (22) can now be pushed into the unlocking position.
4. A key switch in accordance with any one of the preceding claims, characterized in that the bore in the front plate (11) and/or the adjoining passage in the reinforcement shoulder (43) is/are a threaded bore (21) or a threaded passage (21') and the holding spigot is a threaded spigot (22) screwed into said threaded bore (21).
5. A key switch in accordance with claim 4, characterized in that a recess (24) is located at the periphery of the threaded spigot (22) and is made complementary to the radially outer end region of the bit (16) such that the bit (16) engages in at least a substantially shape matched manner into the recess (24) with the threaded spigot (22) in the normal position and in the key removal or insertion position of the lock cylinder (19) such that an axial displacement of the threaded spigot (22) for the purpose of emergency actuation is then not possible.
6. A key switch in accordance with claim 5, characterized in that the recess (24) is only provided at one side and the radial end surface (25) of the switch tongue (16) cooperates with the base of the recess (24) in the normal position of the threaded spigot (22) and of the key removal or insertion position of the lock cylinder (19) such that a rotation of the threaded spigot (22) for the moving of the threaded spigot (22) from the normal position into the unlocking position is made impossible.
7. A key switch in accordance with any one of the preceding claims, characterized in that the end region of the holding spigot (22) remote from the front plate (11) preferably lies upwardly opposite an abutment surface (26) on the housing (12) in the normal position and an abutment (27) is provided on the side of the front plate (11) remote from the holding spigot (22) with respect to the lock cylinder (19) and engages behind a counter surface (28) of the housing (12) such that, when the front plate (11) is released from the housing (12), the front plate (11) can not be taken out of the housing (12) even if the lock cylinder (19) has been rotated out of the key removal or insertion position, but that the holding spigot (22) can be moved so far out of the position of rest toward the front out of the front plate (11), when the key (15) is pivoted out of the removal or insertion position while acting on the emergency actuation apparatus, that the end region of the holding spigots (22) is released from the abutment surface (26) on the housing (12) and the front plate (11) is thereby substantially pivotable about a transverse axis so far that the abutment (27) is released from the counter surface (28).
8. A key switch in accordance with claim 7, characterized in that the abutment surface (26) is provided at a projection (29), preferably a projection projecting into the housing interior from above, whose extent is limited in the direction of the front plate (11) such that the threaded spigot can be released from the abutment surface (26) in the state more or less unscrewed from the normal position.
9. A key switch in accordance with claim 7 or claim 8, characterized in that the counter surface (28) of the housing (12) is provided at a securing projection (30) which preferably projects from the lower wall (44) of the housing (12) and which has a threaded bore (31) for the screwing tight of the front plate by means of only one single bolt (45).
10. A key switch in accordance with claim 9, characterized in that the threaded bore (31) is provided in the securing projection (30) lying opposite a fastening bore (33) in the front plate (11).
11. A key switch in accordance with claim 10, characterized in that bores (33, 34) aligned with the securing bore (32) are also provided in sealing or lining plates (35, 36) covering the front plate (11).
12. A key switch in accordance with one of claims 7 to 11, characterized in that the abutment (27) is preferably provided at the bottom at a securing tab (37) projecting rearwardly from the front plate (11), the cylinder lock (13) being secured to said tab by means of a bolt (38).
13. A key switch in accordance with any one of the preceding claims, characterized in that the holding spigot (22) reaches at least approximately up to the rear wall (39) of the housing (12) in the normal position; and/or in that the holding spigot (22) engages into a bore of the rear wall (39) of the housing (12) in the normal position.
14. A key switch in accordance with one of claims 7 to 13, characterized in that the holding spigot (22) and the abutment (27) lie diametrically opposite with respect to the axis of the lock cylinder (19).
15. A key switch in accordance with any one of the preceding claims, characterized in that the axis of the holding spigot (22) extends parallel to the axis of the lock cylinder (19).
16. A key switch in accordance with any one of the preceding claims, characterized in that the holding spigot (22) is arranged at a low spacing above the cylinder lock (18).
17. A key switch in accordance with any one of the preceding claims, characterized in that the securing bore (32) for the front plate (11) and, optionally, the sealing plate (35) or the lining plate (36) is/are provided beneath the cylinder lock (13).
18. A key switch in accordance with any one of the preceding claims, characterized in that at its side accessible from the front plate (11), the holding spigot (22) has a tool application arrangement, in particular an Allen key bore (40) and/or a slot (49) for the introduction of a screwdriver or of a coin, into which a suitable tool, in particular an Allen key (41) can be inserted.
19. A key switch in accordance with any one of the preceding claims, characterized in that two switches (17, 17') are provided symmetrically to the lock cylinder axis at a plastic insert (42) which can be inserted into the housing (12) independently of the front plate (11) such that the bit (16) can actuate the switches (17, 17') at both sides of the key removal or insertion position of the lock cylinder (19).
20. A key switch in accordance with any one of the preceding claims, characterized in that the housing (12) is made in the shape of a right parallelepiped and the front plate has a rectangular, in particular a square, shape.
21. A key switch in accordance with any one of the preceding claims, characterized in that the holding spigot (22) is made hollow at least in the end region also having the recess (24) and there receives the connection means (20) for the emergency actuation apparatus (18).
22. A key switch in accordance with any one of the preceding claims, characterized in that the head of the holding spigot (22) has a mark (50), e.g. in the form of a red dot, which cooperates with a counter mark (51) provided at the front plate or at the lining plate such that the precise normal position can be established by aligning the marking (50) and the counter marking (51) after the screwing of the holding spigot (22) substantially into the normal position.
23. A key switch in accordance with any one of the preceding claims, characterized in that a desired breakage position (52) is provided between the actuation head (22') and the actual holding spigot (22).

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