CZ290567B6 - Closing device particularly for motor vehicles - Google Patents

Abstract

The proposed closing device consists of a lock cylinder that includes a sleeve (20) and a core (10). The core (10) is locked to the sleeve (20) by means of tumblers (14) when the key (15) is withdrawn and carries an element (31) of a longitudinal two-element coupling (30). When the inserted key (15) is turned, the cylinder core (10) is rotated and this movement is transmitted to the other element (32) of the two-element coupling (30), which element (32) is fixedly fastened on an engaging lug (23). It is the engaging lug (23), which carries out the vehicle-locking function. Although the cylinder sleeve (2O) is rotatably mounted in a fixed housing (16), it is normally prevented from rotating in the housing (16) by means of a catch (40). The catch (40) consists of a latch (41) and a stock rail (42) on the cylinder sleeve (20), which latch and stock rail are loaded by a spring (51) and normally engage in each other. The catch (40) latch (41) is mounted axially slidably but non-rotatably in the housing (16). The longitudinal two-element coupling (30) element (31) made on the cylindrical core (10) is mounted on a fixed axis, the corresponding other element (32) of the longitudinal two-element coupling (30) is mounted along with the latch (41) axially slidably against the spring (51).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter device, in particular for an automobile with a shutter cylinder, which comprises a cylindrical guide and a cylindrical core for receiving a key. When the key is pulled out, the cylindrical core is secured in the cylindrical guide by tumblers located on the springs and is provided with an axial coupling member. The second axial clutch member is non-rotatably coupled to the carrier to perform a breech function in the automobile. The cylindrical guide is rotatably mounted in the rigid housing and is locked by a latch device which consists of at least one latch and is provided with an opposition on the cylindrical guide. The latch with the support rails are spring loaded and interlocking with each other, with the forcibly rotating the cylindrical guide engaging the housing and the axial clutch disengaged. By providing an axial connection and a latching device, it is ensured that control of the lock function is possible only by the key inserted into the core of the lock cylinder, but not by the manipulation of the burglary tool. Although the burglary tool can be rotated by the cylindrical core, the cylindrical guide is not carried because the tumblers are not extended along the circumference of the cylindrical core. The latch mechanism ensures the operation of the cylinder in the housing without overloading in the housing. The latch and arm of this latch device automatically extend axially from each other and disconnect the axial connection between the cylindrical core and the carrier. Therefore, forcible rotation of the breech cylinder cannot result in rotation of the carrier. The overload protection prevents the closing device for violent burglary attempts. Therefore, the device can later be used again to provide a closing function in the car with the key.

BACKGROUND OF THE INVENTION

In known closing devices of this type, such as the device according to DE-OS 41 22 414, a latching device is provided between the cylindrical guide and the housing. An axial spring is positioned between the housing and the cylindrical guide. The support rail formed on the cylindrical guide is axially displaceable in the housing when using violence. In this axial displacement, the cylindrical core naturally also displaces axially, since it must always be axially stable when rotatably mounted in the cylindrical guide. Depending on whether the latch of the latching device is located at the front or rear end of the roller guide, the shut-off roller of the known device moves either axially outward or axially inwardly without overloading. Due to high axial forces, in many cases the latching device can remain engaged when the burglary tool is used and the tumblers can be cut off when the burglary tool is forcibly rotated. In the end, unexpected closing functions can unexpectedly arise due to the burglary tool. In addition, the lock cylinder is damaged by cutting the tumblers and the device cannot be operated again with the key. This risk of breakage can be reduced by a profile with very flat sides, but functional problems arise.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the present invention to provide an affordable, compact closing device of the above-mentioned type in which the closing cylinder is not axially movable in the event of an overload. This is achieved by a measure as defined in claim 1.

According to the invention, the cylindrical guide is mounted in the housing on a fixed axis, and therefore, a support rail of the latching device is formed thereon, which is mounted directly on the fixed axis. The latch associated with this latch assembly is not a fixed part of the housing, but a detachable part which can be moved axially in the housing. The housing consists of an axial guide in which the pawl is supported axially displaceably but non-rotatably. In this case, the axial guide acts axially on this separate pawl and loads it in the direction of the aforementioned roller guide support formed in the housing on a fixed axis.

-1 CZ 290567 B6

According to the invention, in the event of an overload, the cylindrical core also remains in the housing in the case of an overload because it is rotatably mounted in the cylindrical guide on the fixed axis. Therefore, an axial coupling member coupled to the cylindrical core is also mounted on the fixed axis, while the other axial coupling member coupled to the carrier is axially displaceable with the latch. Thus, when the latch is retracted against axial spring load in the event of an overload, the second axial clutch member is automatically released from the axial clutch member connected to the cylindrical core on a fixed axis. According to the invention, therefore, even in the event of an overload, the shut-off cylinder does not carry out any axial movement. The front face of the cylindrical core may always be flush with the shell.

Further measures and advantages of the invention are set forth in the other claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further illustrated by the following drawings, in which:

Giant. 1 shows an axial section through a first schematic representation of a closure device according to the invention, in the normal case when the cylindrical core is operated by an inserted key; FIG. 2 an axial section according to FIG. 1; 3 shows a section along the line III-III of FIG. 1 in a schematic representation, FIG. 4 shows a section parallel to and offset with respect to the axis of the cylinder along the IV-IV line of FIG. 1, FIG. Fig. 2 is a cross-sectional view corresponding to Fig. 4, Fig. 6 of a further schematic cross-section of the device along line VI-VI of Fig. 1, Fig. 1 is an axial section of the device according to FIG. 1 in the region of the axial coupling in the conventional case of FIG. 1, FIG. FIG. 10 shows an alternative embodiment of the latching device in axial section similar to that of FIG. 4, other components are omitted for better understanding; FIG. 11 an axial section corresponding to FIG. 1 in an alternative embodiment of the closure device according to the invention; 11, in a parallel section analogous to FIG. 4, FIG. 14, the latch area in the event of an overload according to FIG. 12 with an alternative device in the representation corresponding to FIG. 5;

-2GB 290567 B6

DETAILED DESCRIPTION OF THE INVENTION

The closure device according to the invention shown in Figures 1 to 9 can preferably be mounted in automobiles and comprises a closure cylinder which consists of a cylindrical conduit 20 and a cylindrical core 10 rotatably mounted outside, with a fixed axis position. This bearing with a fixed position of the axis is provided by an inner collar 21 formed on the cylindrical guide 20, which is mounted in an annular groove 12 on the axial pin 11 formed on the cylindrical core 10 in its extension. The cylindrical core 10 has a key hole 13 visible in FIG. 8 for receiving the key 15 shown in FIG. 1 and a set of tumblers 14 positioned on the spring and best seen in FIG. 2. With the key 15 of FIG. radially outwardly and spring-loaded into the closure channel 24. In the illustrated embodiment, two opposing closure channels 24 are formed into which the tumblers 14 engage diametrically extending from the cylindrical core 10 and block the cylindrical core 10 in the cylindrical conduit 20.

With the key 15 inserted, the tumblers 14 are inserted into the cylindrical core 10, as can be seen in FIG. 1. The cylindrical core 10 is rotatably supported in the cylindrical guide 20. When actuated by the key 15, rotation is transmitted via the axial clutch member 31 best seen in FIGS. 2 and 8 to the carrier 23. The carrier 23 is transferred with the key 15 from the rest position shown in FIG. to one or more operating positions 23, 23, which are shown in dotted lines in FIG. By rotating the carrier 23 in the sense of the rotation arrows 27, 27 ', the desired closing function is performed in a lock element (not shown). The axial clutch member 31 is mounted on the axial pin 11, thus non-rotatably, with a fixed axis position, mounted on the cylindrical core 10. The carrier 23 is fixed with the axis fixed position relative to the axial pin 11 and secured by a spacer ring 22.

The cylindrical guide 20 is rotatably supported in the rigid housing 16, but is normally rotatably fixed in the rigid housing 16 by the latching means 40 described below, as shown in FIGS. 1 and 4. The constant position of the latch axis 40 relative to the housing 16 is important. thus, by means of said connection of the annular groove 12 and the inner collar 21 in the housing 16, the cylindrical guide 20 is also positioned at a fixed axis position. Therefore, as shown in FIG. 1, the cylindrical core 10 has an expanding cylinder head 17 and the housing 16 an inner collar 18. The cylindrical head 17 still housed in the outer sleeve 16 may adjoin the key region 15 as indicated by the dashed line 39 in FIGS. 1 and 2.

In the first embodiment of Figures 1 to 9, the axial clutch member 31 cooperates with the shrink ring 33 that carries the second axial clutch member 32. The shrink ring 33 is mounted on the axial pin 11 and is seen in the housing 16 in the sense of arrow 34. 3 and 5, longitudinally displaceable. The clamping ring 33 is mounted non-rotatably but axially displaceable relative to the carrier 23. The carrier 23 in this first exemplary embodiment still has the same axis position relative to the housing 16 and is located in front of the face of the housing 16. The non-rotatably and axially displaceable connection between the tightening ring 33 and the carrier 23 is formed according to FIGS. a tightening ring 33 and two axial projections 25 formed on the carrier 23. An axial groove 26 for guiding the nose 35 is formed between the two axial projections 25 of the carrier 23.

The compression ring 33 is subjected to an axial elastic force in the direction of the arrow 50 shown in FIG. This elastic force is caused by a helical spring 51, which at the same time performs another function of the impulse spring. The inner end of the spring 51 is supported with a fixed axis position in the region of the axial pin H, which in the embodiment according to FIG. 1 is secured by a carrier 23 supported by a retaining ring 22. The screw spring 51 encircles the axial pin 11 with its threads. The screw spring 51 has two substantially parallel arms 52 of the screw spring 51, between which, as shown in FIG. 3, the two axial lugs 25 of the carrier 23 are disposed. Both arms 52 also surround the axial bridge 19 on the The sleeve 16 is formed on the sleeve 16 between two opposing radial recesses 53. The arms 52 abutting the axial bridge 19 are held by the carrier 23.

3 in the position shown in FIG. The arms 52 of the coil spring 51 exert a tangential force opposite each other in the direction of the arrow 54 under the force of the axial projections 25 of the carrier 23, which ensures the resting position of the carrier 23 shown in Fig. 3. the axial projections 25 of the arm 52 of the helical spring 51 against the force arrow 54 to the end positions 52 ', 52 shown in Fig. 3.

The latching device 40 serves as an overload protection of the cylindrical core 10 and the cylindrical conduit 20 to be explained later, and consists, as best seen in FIGS. 2 and 5, of a latch 41 and an armature 42 which are common interlocking elements. The pawl 41 is formed by a loose body, in this case as shown in FIG. 2, by two balls positioned diagonally to each other. The support 42 is formed by an axial recess 43 on the inner face of the cylindrical guide 20. The recess 42 is formed on both sides with the inclined flanks 44, as best seen in Fig. 4. The described support rail 42 has a fixed axis position, but is rotatably mounted in the housing 16 together with the cylindrical guide 20.

Both balls are loaded by the spring 51 by means of a tightening ring 33. Therefore, the tightening ring 33 has a graduation according to FIG. 9 consisting both of an offset circumferential zone 36 and a planar radial offset surface 37. Both balls run on the offset peripheral zone 36 and abut the radial offset In addition to the longitudinal displacement of the clamping ring 33 shown in FIG. 2, both balls are also axially displaceable. As can be seen from FIGS. 2 and 6, the two balls project radially above the shrink ring 33 and engage in axial grooves 45 which are formed diagonally to each other on the inner surface of the housing 16. Thus, the balls are guided axially but not rotatable with the shrink ring 33. . Giant. 1 and 4 show that the balls are located in the same axial zone of the tightening ring 33 as the axial coupling 30, but opposite the second axial coupling member 32 formed in the tightening ring 33 are radially outward. This is due to the fact that the second axial member 32 of the axial clutch 30 is recessed axially and is covered by the circumferential zone 36 of the described offset. This can be seen in Figures 8 and 9.

Normally, there are the conditions seen in FIG. 1 where the cylindrical guide 20 is mounted non-rotatably in the housing 16 by the action of the latch means 40. This is apparent from FIG. 4 by the fact that the balls are mounted in the axial groove 45 and located in the axial recess 43. The cylindrical guide 20 and the latch 41 therefore usually rest on the housing 16. By means of a key 15 inserted into the cylindrical core 10, The tumbler 14, as already mentioned, moves to the tumbler 14 position 14 'shown in dashed lines in FIG. Therefore, the cylindrical core 10 can be rotated by means of a wrench 15 in the cylindrical guide 20. This rotation is transmitted from the axial pin 11 via an axial clutch 30 to the clamping ring 33 and the clamping ring 33 is carried by the axial lug 25 and the axial nose 35.

However, this changes when unauthorized persons use a burglary tool 55, for example a screwdriver, to forcibly rotate the cylindrical core 10. As already described, an extended tumbler 14 results in a non-rotatable connection between the cylindrical core 10 and the cylindrical guide 20 of FIG. 2 and 5, the overload protection of the latch assembly 40 acts as shown in FIGS. 2 and 5. At a defined torque, the ball is pulled through the inclined block 44 from the axial recess 43 in the cylindrical guide 20 and extends to the inner face 28 of the cylindrical guide 20.

Since the cylindrical guide 20, as already mentioned several times, is located in the housing 16 on a fixed axis, the clamping ring 33 of FIG. 5 is pushed back in the sense of the arrow 34 against the direction of the axial force of the spring 51. The axial nose 35 formed on the clamping ring 33 is inserted into the axial groove 26 between the two axial projections 25 of the carrier 23. Due to the longitudinal displacement of the ring 33, the axial clutch 30 is also disengaged, as shown in FIG. axially, but in the sense of the aforementioned arrow 34, the second member 32 of the axial clutch 30 located on the pulling side is moved

Using the burglary tool 55, the cylindrical core 10, together with the cylindrical guide 20, is rotated in the housing 16 in the sense of the arrow 29 of the burglary tool 55 shown in FIG. 23. The axial coupling 30 is disengaged and the cylindrical core 10 and the cylindrical guide 20 are in free running due to overload. The limit values at which the free running of the cylindrical core 10 and the cylindrical guide 20 due to overloading occur in the latch 40 are determined by the helical spring 51 together with the bevel of the inclined flank 44. This limit is determined so that the cylindrical core 10 and the cylindrical guide 20 are again operable with a key after the failed burglary attempt.

15. It is noteworthy that the axial position of the cylindrical core 10 and the cylindrical guide 20 in the housing 16 shown in FIGS. 1 and 2 does not change with the dashed line 39.

The tightening ring 33 is rotatably mounted in the housing 16 only in its axial position according to FIG. 1 connected to the cylindrical core 10, but even with a small displacement in the direction to the open-closed position shown in FIG. . 8 and 9, as well as two radial ribs 48 on the inner surface of the housing 16. The axial protrusion 38 is normally located at a predetermined axial distance from the end of the radial rib. However, if there is a longitudinal displacement of the tightening ring 33 seen in FIG. 2, the axial projection 38 drives into the axial gap 49 between the two radial ribs 48, as best seen in FIG. 2, the clamping ring 33 is therefore rotatably mounted in the housing 16. However, this means that due to the non-rotatable connection of the axial projection 25 of the carrier 23 and the axial nose 35, the carrier 23 also remains non-rotatable in the housing 16. Thus, irrespective of the burglary tool 55, manipulations in the region of the carrier 23 are also unsuccessful.

As a further embodiment of FIG. 10, a modified embodiment of another latching device 40 'is shown. The same reference numerals as used in the first embodiment of FIGS. 1 to 9 are used to denote the respective components. The opposition 42 of the other latching device 40 'is formed on the cylindrical guide 20 in the same way as the recess 43 with the inclined flanks 44. It is therefore sufficient to focus only on the differences of the other latching device 40'.

The respective other pawl 41 'is part of the body of the ring 46 seen in FIG. 10, which is housed in the housing 16 axially displaceably. The ring body 46 further comprises two radial projections 47 which engage both of the aforementioned axial grooves 45 on the inner surface of the housing 16. Another pawl 41 'is profiled and occupies a circumference corresponding to the shape of the described opposition 42. The ring body 46 is disposed on the axial 2 can be freely rotated against the body of the ring 46 when it is rotated violently in the direction of rotation 29 of the burglary tool 55 shown in connection with FIG. 2. For example, a tightening ring 33 described in the preceding exemplary embodiment can be positioned next to the ring 46. unwritten ball. The axial coupling 30 is similar to the previous embodiment, i.e. between the axial pin 11 and the clamping ring 33. However, the embodiment of FIG. 10 can also be used in the following devices, which will be described below.

Figures 11 to 14 show a third embodiment of a closure device according to the invention. Here too, the corresponding parts are designated with the same reference numerals as in the previous embodiment, and the foregoing description applies. These figures correspond to the representation according to FIGS. 1,2 and also 4 and 5 of the first exemplary embodiment. It is therefore sufficient to describe the differences.

The axially directed resilient force arrow 50 acts across the other carrier 58 on the latch 41 of the latch assembly 40 in this case also formed as a ball which provides security when using the violence of Fig. 12 analogously to the description in connection with the first exemplary embodiment. In this case, the inner end of the coil spring 51 is supported over the retaining ring 22 on the axial pin Π., While the outer end of the coil spring 51 acts on another carrier 58. The other carrier 58 is axially offset and has a radial

14 and the adjacent radial projection 47. The balls forming the latch 41 and again engaging the axial groove 45 formed in the housing 16 are located on the peripheral zone 56 and rest on the abutment desktop 57.

Although the other axial clutch 30 'is shaped and functionally heated similarly to the first embodiment, the difference is that the second member 32' of the other axial clutch 30 'shown in dashed lines is part of another carrier 58. Also the other carrier 58 has the axial projection 59 of the other carrier 58, which normally is, as seen in FIG. 11, positioned at a predetermined axial distance from the radial ribs 48 formed on the interior of the housing 56. In the event of an overload according to FIG. 12, the axial projection 59 of the other carrier 58 enters the free gap between the two radial ribs 48 and causes the other carrier 58 to rotate in the housing 16. The arm 60 protruding from the other carrier 58 ensures the locking function. 12 to the overload case of FIG.

A further difference in the third embodiment of FIGS. 11 to 14 is that the longitudinal displacement in the event of an overload in FIG. 12 in the direction of arrow 34 results in a corresponding displacement of the entire other carrier 58. 12, it is ensured by the radial ribs 48 and the axial projection 59 of the other carrier 58 that the other carrier 58 does not rotate in the event of an overload according to FIG. This axial displacement in the direction of the arrow 34 of the arm 60 is additionally used, while still running, to engage with the next lock component. However, this longitudinal displacement of the other carrier 58 in the direction of the arrow 34 does not occur in the front of the device according to FIGS. 11-14. As can be seen, the cylindrical guide 20 and the cylindrical core 10 retained therein remain in the fixed, axially stable position. 11 and 12 corresponding to the dashed line 39.

PATENT CLAIMS

Claims (17)

Closure device, in particular for automobiles, with a closure cylinder comprising a cylindrical guide (20) and a cylindrical core (10) for inserting a key (15), the cylindrical core (10) being secured in the cylindrical key when the key (15) is pulled out a guide (20) by tumblers (14) located on the springs and is provided with an axial coupling member (31, 30, 30 '), the second axial coupling member (32, 30, 30') being non-rotatably connected to the carrier (23, 58) for performing a breech function in an automobile, wherein the cylindrical guide (20) is mounted in the rigid housing (16) rotatably and is blocked by a latch device (40, 40 ') consisting of at least one latch (41, 4T) and a cylindrical guide (40) 20) is provided with an opposition (42) and the pawl (41, 41 ') and the opposites (42) are loaded with each other by a spring (51) and engage with each other, while forcibly rotating the cylindrical guide (20) engages the housing (16). the axial clutch (30, 30 ') disengaged, respectively characterized in that the cylindrical guide (20) is mounted in the housing (16) non-rotatably and axially displaceably, the pawl (41, 41 ') is connected to the spring (51) and the opposition (42) formed on the cylindrical guide (20) is supported in the housing (16) on the fixed axis, the axial coupling member (31, 30 ') connected to the cylindrical core (10) being received in the cylindrical guide (20) on the fixed axis and the second axial coupling member (32) 30 ') connected to the carrier (23, 58) together with the pawl is axially displaceable against the spring (51). Device according to claim 1, characterized in that a clamping ring (33) is provided between the spring (51) and the pawl (41), which is provided with a second axial coupling member (32) and is axially displaceable in the housing (16). Device according to claim 2, characterized in that an axial pin (11) is provided in the clamping ring (33) and is formed on the cylindrical core (10) for non-rotatably connecting the member (31) of the axial coupling (30). -6GB 290567 B6 Device according to claim 2 or 3, characterized in that the clamping ring (33) is mounted non-rotatably and axially displaceably on a carrier (23) which is rotatably mounted on the axial pin (11). Device according to at least one of Claims 2 to 4, characterized in that the clamping ring (33) is rotatably mounted in the housing (16) in the axial position of the connection to the cylindrical core (10). the axial disconnection position from the cylindrical core (10) is mounted in the housing (16) non-rotatably. Device according to at least one of Claims 2 to 5, characterized in that the pawl (41) of the pawl device (40) is mounted on the offset surface (37) of the clamping ring (33). Device according to claim 1, characterized in that the spring (51) is connected to the pawl (40) by means of another gripper (58), which is mounted in the housing (16) axially displaceable and supports the second member (32 ') of another axial the couplings (30 '). Device according to claim 7, characterized in that in another carrier (58), an axial pin (11) formed on the cylindrical core (10) is rotatably mounted, the axial pin (11) being non-rotatably mounted on a fixed axis a member (31) of another axial coupling (30 '). Device according to claim 7 or 8, characterized in that the other carrier (58) is mounted rotatably in the housing (16) in the axial position of connection to the cylindrical core (10) and in the axial position of disconnection from the cylindrical core (10). in the housing (16) non-rotatably. Device according to at least one of Claims 1 to 9, characterized in that the support (42) is formed in the inner face (28) of the cylindrical guide (20) by at least one recess (43) with bilateral the pawl (44) is formed by at least one free body, which in the normal position is axially pushed by the tightening ring (33) or by another carrier (58) into the recess (43) and which overhangs radially over the tightening ring (44). 33), or another carrier (58), and engages an axial groove (45) on the inner surface of the housing (16). Device according to claim 10, characterized in that the pawl (41) is formed by a single ball. Device according to claim 10 or 11, characterized in that the latch (41) is formed by two balls, to which two recesses (43) in the cylindrical design (20) and two axial grooves (45) in the housing (16) are attached. wherein the two recesses (43) and the two axial grooves (45) are disposed diagonally in the cylindrical guide (20) and on the housing (16). Device according to at least one of claims 10 to 12, characterized in that the free body lies in a common axial zone of the clamping ring (33) and the axial coupling (30), opposite the second axial coupling member (32), formed in the tightening ring (33) is offset radially outwards. Device according to at least one of Claims 1 to 9, characterized in that the support (42) of the other latching device (40 ') is formed in the inner face (28) of the roller guide (20) by at least one recess (43) having oblique sides (44) on both sides, and the other latch (41 ') is formed by a ring (46) which is mounted in the housing (16) axially displaceably and has at least one latch projection whose profile corresponds to the recess (43). Device according to at least one of Claims 1 to 14, characterized in that the spring (51) is in mechanical coupling with the axial coupling (30) and the latching device (40). Apparatus according to claim 15, characterized in that the axial spring (51) serves as a pulse spring for the angularly defined resting position of the carrier (23). -7GB 290567 B6 Device according to claim 15 or 16, characterized in that the axial spring (50) is supported by a retaining ring (22) which is coaxially located on the axial pin (11).