CN1344346A - Locking device, esp, for locking functions in rear end of motor vehicle - Google Patents

Abstract

The invention relates to a locking device having a key-actuated lock cylinder acting upon locking elements by means of an eccentric lever when it is placed in a release position and actuated. A centrally controlled locking system lever that is controlled by a centrally controlled locking system device is mounted coaxially to the eccentric lever. When the centrally controlled locking system lever and the eccentric lever are rotationally connected, both levers can then be moved to a secure position in which the locking members are deactivated. The cylinder core can be further rotated into a safe position using the key, in which the eccentric lever is blocked and the key can be inserted into or pulled out of the cylinder. In order to provide greater operating comfort and preclude operational malfunctions, coupling means are mounted between the centrally control locking system lever and the eccentric lever which rotationally connects both levers in the secure position and the release position but decouples said levers in the safe position. A coupling member is also mounted between the cylinder core and the eccentric lever which moves back the eccentric lever from the safe position to the neutral position when the cylinder core is reversely rotated.

Description

Especially the locking device that performs the locking function at the rear of the car

The invention relates to a locking device of the type specified in the preamble of claim 1 . In addition to such latches which are provided at the rear of the vehicle, there are also other latches on the vehicle doors which have their own locking elements. In order to coordinate the central control of the individual devices, a central interlocking device, hereinafter referred to as "ZV device", is used. The device has transmissions which, in the case of several individual latches, act on a central locking lever and switch it between two pivoted positions. Under normal conditions, an eccentric lever connected to the central locking lever assumes the corresponding swivel position, ie it is either in a locked position in which the associated locking element is inactive, or in an unlocked position in which the associated locking element is active.

The locking device has a lock cylinder with a key-operated cylinder core, which is positively and/or non-positively connected to a transmission element, which is the same as the aforementioned eccentric rod. Shaft arrangement. In addition, a pulsating spring is provided, which switches automatically to a zero position between the locked and unlocked positions after one key actuation. In this zero position, the key can be inserted into the barrel and withdrawn. Furthermore, the cartridge can be further rotated by means of a key in a safety position beyond the locked position, in which the eccentric lever is locked. In this secure position, the key can likewise be inserted into the cartridge and withdrawn.

In a known device of the type stated in the preamble of claim 1 , the eccentric lever is connected in a rotationally fixed manner to the central locking lever. The two rods always perform a synchronous rotary movement. When the two levers, although in their locked position, are released by a control command from outside the device, the central interlock attempts to turn the central interlock lever to its unlocked position so that it is within the safe position of the core. cause malfunction. This results in a clamping of the inside of the lock cylinder which necessarily or at least interferes with the insertion of the key into the cylinder. This clamping takes place, for example, between a key-operated shutter in the lock cylinder and the corresponding locking channel.

Furthermore, in the known locking device, the cylinder needs to be rotated by a large angle in order to transfer the above-mentioned two rods from the safety position to their unlocked position, only in this unlocked position, the lock element of the device can be locked. operate. That is, in known devices the key has to be turned all the way from the safe position through the zero position to the unlocked position of the cartridge. Such a large rotation of the key is not ergonomic and affects the convenience of operation.

The object of the present invention is to develop a reliable locking device of the type stated in the preamble of claim 1, which does not cause the above-mentioned operational failures and is characterized by extremely easy operation. According to the invention, this object is achieved by the measures listed in the characterizing part of claim 1 which have the following particular importance.

According to the invention, a connecting device is provided between the central interlocking lever and the eccentric lever, which causes the two levers to The two rods are connected to each other in a rotationally fixed manner, but when the safe position is reached, the two rods are released. In the safe position, the above-mentioned operating faults are no longer possible, because the central locking lever is released and can easily be transferred from the locked position to its unlocked position without the eccentric lever moving together. As a result, no jamming occurs inside the lock cylinder. Furthermore, a connecting piece is provided between the core and the eccentric rod, which connects the core to the eccentric rod when the key is turned once from the safety position and when the central locking lever is previously in its unlocked position . In this case, the key only needs to be turned by a small angle of rotation; the lock cylinder only needs to be turned from the safety position to the zero position to move the eccentric lever, which was then in the locked position, to its unlocked position. Such a small swivel angle facilitates handling and thus facilitates the handling of the locking device.

Further measures and advantages of the invention can be derived from the subclaims, from the following description and from the drawing. The drawing shows an embodiment of the invention. These drawings represent:

Fig. 1 is seen the end view of the device of the present invention from Fig. 2 arrow I direction;

Fig. 2 is a longitudinal section cut longitudinally through the lock cylinder of the device;

Fig. 3 cross-section of the device shown in Fig. 2 cut along Fig. 2 sectional line III-III;

Figures 4a+4b are cross-sections of the device shown in Figure 2 taken along the section line IV-IV of Figure 2 in two different positions, wherein the core is shaded with dots;

Figure 5a+5b is a partial view of a cross-section of the device according to the invention taken along the section line V-V in Figure 2, with the lock cylinder in its normal position and the associated eccentric rod in a locked or unlocked position relative to the lock element ;

Fig. 5c+5d is corresponding to the cross-sectional view of the device of the present invention of Fig. 5 a and 5b, and now the lock cylinder is in the locking position;

Fig. 6a+6b is another partial view of a cross-section of the device shown in Fig. 2 cut along the section line IV-IV of Fig. 2, and now each component is in the position of Fig. 5a or 5b;

Fig. 6c+6d is the same cross-section of Fig. 6a and Fig. 6b. At this moment, the lock cylinder or various components are located in the position of Fig. 5c or 5d.

A locking cylinder 10 belonging to the locking device shown in FIGS. 1 and 2 , which is located at the rear of the vehicle to perform the locking function of the tailgate, can be clearly seen in FIG. 2 . The lock cylinder consists of a cylinder core divided into two parts 11 , 12 . The cartridges 11, 12 are mounted on a stationary housing 13 and can be turned by a key (not shown). The outer section 12 of the cartridge is provided with a protective cap 14 at the front end and has a keyway 15, as can be clearly seen in FIG. 1, for accommodating a key. The front end of the outer section 12 of the core protrudes with its protective cover 14 outwards from the body steel sheet 17 shown in dashed lines in FIG. 2 . A keyway 15 is accessible there. Also provided in this outer section 12 of the cartridge is a key-operable shutter 16 , the position of which is indicated by dotted lines in FIG. 2 .

The other section 11 of the core is connected in a rotationally fixed manner to the outer section 12 . This section 11 points to the interior of the car, so it is called "inner section". The inner section 11 has different parts 20, 30, 40 arranged coaxially. An overload clutch, not shown, can also be arranged between the two core sections 11 , 12 . When a torque below a certain limit value acts on the outer section 12 , a torsionally fixed connection is formed between the two core sections 11 , 12 . Therefore, through the key rotation of the outer section 12, the inner section 11 can be rotated synchronously. However, if a torque exceeding this limit value is applied to the outer section by a lockpicking tool or the like, the overload clutch disengages the inner section 11 from the outer section 12 of the core. The outer section 12 , which rotates together with the lockpicking tool, then only runs idle in the housing 13 , so that this rotation is not transmitted to the inner section 11 and the parts 20 , 30 , 40 located there.

A transmission member 20 belonging to these parts is mounted on the core 11 and is rotatable, the transmission member having an axial projection 21 and a radial projection 22 . In addition to the axial projection 21 there is also a fixed housing projection 75 . These lugs 21 , 75 lie in an offset axial plane of the section shown in FIG. 3 and are retained by the two walls 26 , 27 of a pulsation spring 25 surrounding the cartridge 11 . The cartridge can be held in a zero position indicated by a vertical line 50 by means of the pulsation spring 25 . The cartridge 11 is selectively rotatable by an inserted key in the rotational position shown by line 51 or line 51' in FIG. 1 . The corresponding angles of rotation shown with 53 or 53' in Figure 1 are equal and may be 55° respectively. When the core 11, 12 is turned to the rotary position 51 or 51' by the key, and then the key is released, the core 11, 12 is automatically brought back to its zero position 50 from the spring 25. In order to carry out and limit this swivel angle 53, 53', the housing 13 shown in FIG.

The latter can be seen at a glance from Figures 5a and 5b. In this sectional view, only one axial drive pin 23 of the drive member 20 is shown, which is delimited by two radial shoulders 24, 24'. In Figures 5a, 5b, although the core 11 is rotated in Figure 5a to the position 51 of Figure 1 and the core 11 is reversely rotated in Figure 5b to position 51', the driving pin 23 is still in the same position. Here the shoulder 24 of Fig. 5a and the shoulder 24 of Fig. 5b cooperate with a corresponding opposing shoulder 34 or 34' of the eccentric rod 30, which is another part of this arrangement.

The eccentric rod 30 is rotatably arranged on the barrel core 11 with a bearing element 33 . The bearing member 33 has the above-mentioned lugs 34, 34', and the eccentric rod 30 is rotated by the key in the direction of the arrow 18 to the position shown in Fig. 5a, which is shown by the auxiliary line 31 in Fig. 1 . As a result, the first locking element 45 shown in FIGS. 1 and 2 reaches a position in which other locking elements (not shown) are inactive. In this case, the eccentric lever 30 is in a "locked position", and the locking element 45 in this case pushes a slider that can slide on the guide rod 35 of FIG. It also slides in the opposite position not shown. In this reverse position of the locking element 45, the other locking elements are active.

Conversely, when the core 11 is rotated by the key in the opposite direction indicated by the arrow 18', the aforesaid shoulder 24' and the opposing shoulder 34' cooperate and cause the eccentric lever to rotate as can be seen from Figure 5b. Another location 30'. This location 30' is shown in dashed lines in Fig. 1 . Its position is indicated by the auxiliary line 31' there. In this case, the above-mentioned first locking element 45 is moved into a position (not shown in FIG. 1 ) in which the other locking elements below are active. So in this position 30', the lock can be opened by operating a handle. This position 30' is therefore the "unlocked position" of the eccentric lever.

Another part that opens the device is a so-called central locking lever 40 shown in FIG. on the core 11. The central locking lever 40 cooperates with a transmission of the above-mentioned central locking device which acts via a rod on a bearing bore 42 of the central locking lever 40 . The central locking lever 40 is converted from the position indicated by the auxiliary line 41 shown in FIG. 6a to the auxiliary position shown in FIG. Another location 40' is shown by line 41'.

As shown in FIG. 2, the central locking lever 40 is mounted with its bearing element 43 on the inner end of the core 11, where it is axially fixed by a locking ring 19 or the like. According to FIGS. 2 and 6 a , the two rods 30 , 40 are normally connected in a rotationally fixed manner via a connecting device 55 . This connecting device 55 consists in this example of a spring-loaded, axially displaceable pin which is longitudinally displaceable in a radial guide 44 of the central locking lever 40 . It can be clearly seen from FIG. 2 that the pin 55 is divided into two connecting sections 56, 57 in the axial direction of the lock cylinder 10, which have different lengths and can be referred to as connecting sections 56 for the following obvious reasons. and control section 57. The two segments 56, 57 have a shape that can be seen from FIG. 6a. The bearing elements 43 , 33 of the two rods 30 , 40 have radial holes 36 , 46 through which the pin 55 can pass. The pin 55 is loaded by a spring 58 in the direction of arrow 59 in FIG. 6a. As a result, the inner end of the control section 57 of the pin 55 elastically bears against a control surface 37 of the core 11 . For better guidance, the inner end of the control section 57 is made into a circle, while the inner end of the adjacent short connecting section 56 is made into a concave shape, and the bearing part 33 of the eccentric rod 30 does not protrude radially inward. .

The radial bore 46 of the bearing part 43 defines the contour width of the pin 55 , whereas the radial bore 36 of the bearing part 33 is stepped in its width and has a different clear width relative to the two pin sections 56 , 57 . The radial hole 36 is made narrower in the range of the connecting section 56, so that in the situation that can be seen from FIGS. 30 , 40 are connected to each other in a rotationally fixed manner and can be moved between the above-mentioned positions 30 , 40 on the one hand and jointly on the other hand by the above-mentioned key rotation 18 , 18 ′ or by the above-mentioned transmission of the central locking device. Since the aforementioned locking element 45 has thus reached the effective and ineffective positions relative to the following locking element, the position represented by the straight line 31 or 41 of these two rods 30, 40 is the "locked position", and the two Another position 30', 40' represented by the straight line 31' or 41' of the bar is the "unlocked position" mentioned above.

The above-mentioned stepped radial hole 36 in the bearing part 33 of the eccentric rod 30 has, as can be seen from FIG. End stops 38, 38' are bounded. The rotary end stops 38, 38' allow the rotation of the central locking lever 40 relative to the eccentric lever 30 by an angular difference 47 between the two positions 40, 40' indicated by auxiliary lines 41, 41' in FIG. 1 . As can be seen from FIG. 6 d , this takes advantage of the special case in which the core 11 is in a so-called "safety position", which is marked with the auxiliary line 52 in FIG. 1 .

This safety position 52 of FIG. 1 can be reached from the zero position 50 only by turning the key of the cartridge 11 through an angle 54 which is much greater than the aforementioned angle of rotation 53 . This angle 54 is 90° in this example. This angle 54 is also shown in cross-section in FIG. 4 b , and the safety position 52 of the core 11 is shown with dot hatching. The zero position 50 of this core 11 can be seen in FIG. 4a and is marked with an auxiliary line 50 in FIG. 4b. A spring and two balls 49 are located in a radial groove 48 of the core 11 . These two balls 49 are pressed radially outwards into the grooves 29 or 29' in the annular bore of the transmission element 20 by the spring force indicated by the arrows in FIGS. 4a and 4b. In this way, in the normal case according to FIG. 4a and in the special case according to FIG. 4b a non-positive connection is first established between the transmission element 20 and the core 11 . In addition, however, the annular bore of the transmission element on the one hand and the circumference of the cartridge core 11 on the other hand have a non-circular contour. Thus, in the normal case of FIG. 4 a a rotary stop 39 comes into play, or in the special case of FIG. 4 b a further rotary stop 39 ′ between the transmission member 20 and the cartridge core 11 comes into play.

As already explained in conjunction with FIGS. 5a and 5b, in the normal situation of FIG. through the locked and unlocked rotational positions 51, 51'. It can then be seen from FIG. 4 a that the two parts 20 , 11 move together. This is primarily caused by the above-mentioned non-positive connection between the two balls 49 and the groove 29 . In addition, as can be seen from 4 a , there is also a positive connection between the two parts 20 , 11 . This positive connection is realized in this example by a radially movable ball 32 arranged in a radial hole 62 of the drive element 20 because the ball 32 engages with a part of its cross-section in the center of the core 11. In a radial groove 63. Therefore, when the core 11 performs the aforementioned rotational movement 18, 18' according to Fig. 4a, the transmission member 20 also rotates together in a form-connected manner. That is to say, in the normal situation of FIG. 4a, the two parts 20, 11 perform a synchronous movement during rotation.

During the transition from the normal situation to the special situation of Figure 4b, when the core 11 is turned to its safe position 52 there, the situation changes: inside the housing 13 a radial Counter-groove 64 into which ball 32 enters after an initial rotation of an angle 65 of units 11 , 20 that first move together according to FIG. 4 a . This starting angle of rotation 65 can be greater than/equal to the angle of rotation 53 described in connection with FIG. 1 . After passing through this starting angle of rotation 65 , the ball 32 can enter the counter groove 64 and leave the radial groove 63 of the cartridge 11 . Balls 32 are pressed into counter-grooves 64 in radial bores 62 of the contoured surface of cartridge core 11 , indicated at 66 in FIG. 4 b . There is now a positive connection between housing 13 and transmission element 20 . This particular position of the drive element 20 can be seen by means of its drive pin 23" indicated by 23" in FIGS. 5c and 5d. Due to this form connection, the transmission element 20 remains stationary. During the remaining rotation 67 shown in FIG. 4a of the core 11 up to the full angle 54 as can be seen from FIG. The stop 39 is released. The two balls then drop into the already described grooves 29' of the rotational movement inside the ring of the transmission member 20, thereby obtaining the second stop position as can be seen from FIG. 4b. However, due to the already mentioned non-circular contour, there is a rotation stop 39' between the two parts 10, 20, so that the total angle of rotation 54 of the core 11 is limited.

In the safety position of FIG. 4b there is a situation as can be seen from FIGS. 5c to 6d. In the safe position 52, the keyway 15 is in a vertical position relative to the previous zero position 50 of FIGS. 5a to 6b. In this secure position, the key can be inserted into the cartridge 11 without difficulty and can be pulled out. This is achieved via a further locking channel, not shown, inside the housing 13 , into which the aforementioned flaps 16 , which can be seen in FIG. 2 , slide in with their ends. Due to the mechanism already described, in the safety position 52 the eccentric lever 30 is essentially in its locked position marked with the auxiliary line 31 , where the associated lock is inactive. Furthermore, the eccentric lever 30 is locked in its latched position 31, as shown in FIGS. 5c and 5d. The drive pin at position 23" supports with its boss 24 the corresponding counter boss 34 of the eccentric rod 30. Return rotation in the direction of arrow 68 in Fig. 5c by means of a lockpicking tool or the like is therefore not possible.

In the safety position 52 of the cartridge 11, the central locking lever is disengaged relative to the eccentric lever 30, as shown in FIG. 6c. This is achieved by the aforementioned control surface 37 of the core 11 pressing the end of the long control section 57 of the pin 55 radially outwards against a spring force 59 . In this way, the adjacent connecting section 56 of the common pin 55 is moved out of the corresponding narrower area in the radial bore 36 of the eccentric rod 30 and releases the associated bearing part 33 with its concave end. Thus, the released central locking lever can be switched from a locked position shown in FIG. 6c of the above-mentioned transmission of the central locking device to its unlocked position 40' shown in FIG. 6d. But the eccentric rod 30 locked in the safety position 52 does not change its position. So also in the unlocked position 40' of the central locking lever shown in Fig. 6d, the operation of the lock element is not possible; the lock is in the inactive position. In the situation of Fig. 6 d, the pin 55 is also in the disengaged position already mentioned, because the end of its control section 57 is supported elastically on the raised portion 69 of the control surface 37 marked with 69 of the core 11, The bead is simply formed in this case by the peripheral surface of the cartridge core 11 .

However, between the core 11 and the eccentric rod 30 there is also a special connecting element 60 which in this example is formed by a roller. The core 11 of this roller 60 is provided with a recessed area 71 of a control profile and an indented area 72 of an opposite profile in the bearing part 43 of the central locking lever. In addition, as shown in Figure 6d, the bearing member 33 has a radial bore 70 for receiving the roller 60 loosely disposed therein.

Due to the locking of the eccentric rod 30 in the safety position 52 of FIGS. 6c and 6d , and due to the co-rotation in the radial bore 70 , the roller 60 is also in the rotational position indicated at 61 . In the locked position 40 of FIG. 6c, although the central locking lever is still aligned with the roller 60 with its recessed area 72 of the opposite profile, it changes in the unlocked position 40' of FIG. 6d because the bearing element The opposed contoured convex area 73 in the inner portion 43 presses the ball 60 into the concave area 71 of the core 11 . This raised area 73 is simply formed by the inner annular surface of the rod-bearing part 43 .

If now the cartridge core 11 is turned back to the zero position 50 in the direction of the reverse arrow 18" in Fig. 6d from the safe position 52 of Fig. 6d, the central locking lever remains in its unlocked position 40'. When the end of the zone 71 hits the roller 60 that has stopped at that time, after the initial revolution shown by the rotation arrow 74 in Fig. 4b, the transmission member 20 is also released; In the groove 63. In addition, between these two balls 49 and the other pair of grooves 29 of transmission member 20 at this moment form stop engagement again.So, transmission member 20 as in every normal closing movement, again Automatically return to the zero position 50 again. The eccentric lever 30 is turned into the unlocked position 30' with the core 11 and the roller 60 at this time. The angular value between these two positions 50, 52, which is here 90°, is located in the swivel 18 " At 54 o'clock, the eccentric rod 30 has just rotated all angle values 47 as can be seen from FIG. 1 at the same time. That is, it is consistent with the angle value between 50 and 52, so the key does not need to continue to rotate. This brings convenience of operation.

The two levers 30', 40' are then located again in their respective unlocked positions according to Figure 6b. The roller 60 has reached a rotational position 61' of FIG. 6b, where it is aligned again with the recessed area 72 of the opposing profile of the central locking lever. At this time, the pin 55 has also reached its engagement position again, where the two rods 30', 40' are connected to each other again in a torsionally fixed manner. These two levers can be selectively resynchronized into their locked positions 30, 40 shown in FIG. 6a by the transmission of the central locking device in which the central locking lever 40' of FIG. 6b is engaged at 42. The connecting element 60 now produces the control movement described below.

When the key represented by 18 in FIGS. 5b and 6b is rotated, firstly the eccentric rod 30 is also rotated together by the shoulder 24 of the drive pin 23 and the opposite shoulder 34 of the bearing member 33, as previously described, so that in its bearing Radial holes 70 in member 33 also allow the rollers to rotate together. So the roller 60 rolls on the peripheral surface 69 of the core 11, at this moment, the peripheral surface plays the role of the raised area of the control profile, which finally presses the roller 60 back into the center locking lever 40 according to Fig. 6a In the recessed area 72 of the opposite profile. At this moment, between these two rods 30, 40, form a second connection formed in the form of a positive connection; that is, in addition to the effectively connected pin 55, the roller 60 also connects the two rods 30, 40 to each other in the joint. Together.

List of Reference Symbols

10 lock cylinder

11 barrel core, inner section

12 barrel core, outer section

13 Shell

14 Protective cover

Keyway in 15 12

16 Baffle in 12

17 body steel plate (picture 2)

18 key rotation arrows

18' key reverse arrow

18" key from 52 return swivel arrow (Figure 6d)

19 Locking ring of 43 on 11 (picture 2)

20 transmission parts

21 Axial protrusion of 20, transmission protrusion

Another protrusion of 22 20, stop protrusion

23 20 drive pin

23" drive pin in safe position (Fig. 5c, 5d)

24 The first radial shoulder of 23

Second shoulder at 24'23

25 pulsation spring (Figure 3)

26 25's first arm (Fig. 3)

27 25's second arm (Fig. 3)

28 22 first end stop (fig. 3)

Second end stop for 28'22 (fig. 3)

29 The first groove in 20 (Fig. 4a, 4b)

Second groove inside 29'20 (Fig. 4a, 4b)

30 Eccentric lever (in locked position)

Unlocked position at 30'30

31 30 Auxiliary line for locked position (Fig. 1)

Auxiliary line for unlocked position at 31'30 (Fig. 1)

32 balls (Figure 4a)

33 30 bearing parts

The first opposite boss of 34 33 (Fig. 5a)

34'33's second opposing boss (Fig. 5b)

35 45 guide rod

36 56 and 57 radial holes in 33

37 57 The recessed area of the control surface on 11 (Figure 6a)

38 57 first rotation stop (Fig. 6a)

2nd rotary stop for 38'57 (Fig. 6a, 6d)

Rotation stop between 39 20/11 (Fig. 4a)

Rotation stop between 39'20/11 (fig. 4b)

40 Central locking lever (locked position)

Unlocked position at 40'40

41 40 Auxiliary line for locked position (Fig. 1)

Auxiliary line for unlocked position of 41'40 (Fig. 1)

42 40 bearing holes (Fig. 6)

43 40 bearing parts

44 55 radial guide within 40

45 lock element (Fig. 1)

46 55 radial holes in 43

47 Angle difference between 40, 40' (Figure 1)

Radial channel in 48 11 (Fig. 4a, 4b)

49 ball inside 48 (Fig. 4a, 4b)

50 11 zero position, vertical line (Fig. 1)

51 11 Auxiliary line for locking rotation position (Fig. 1)

Auxiliary line for unlocked rotation position at 51’11 (Fig. 1)

52 11 Auxiliary line for safety position (Fig. 1)

53 Rotation angle between 50 and 51

Rotation angle between 53' 50 and 51' (Fig. 1)

54 Angle between 50 and 52

55 Connection device, pin

56 55 short connecting section

57 55 long control section

58 55 springs (Figure 6a)

59 55 spring-loaded arrows (Figure 6a)

60 Connecting elements, rollers

61 60 Auxiliary line for first rotation position

Auxiliary line for second rotation position at 61'60

The radial hole of 32 in 62 20 (Fig. 4a)

Radial grooves in 63 11 (Fig. 4a)

64 32 radially opposite grooves in 13 (Fig. 4a, 4b)

A starting rotation of 65 11 (Fig. 4)

The contour surface of 66 11 (Fig. 4b)

67 11 remaining spins (Figure 4a)

68 30 reverse arrows (Fig. 5c)

69, 37 or 71 raised portion (Fig. 6a, 6b)

Radial holes in 33 for 70 60

The concave area of the control contour of 71 11 (Fig. 6d)

72 The recessed area of the opposite profile of 11 configured for 60 within 43 (Fig. 6d)

73 Convex areas of opposite contours within 33

74 11 initial reversal (Figure 4b)

Raised part in 75 13

Claims (8)

1. Especially the locking device that performs the locking function at the rear of the car, including: a lock cylinder (10) having a key-operable cylinder core (11, 12), A transmission element (20) arranged coaxially with the core (11), which is positively connected (32, 62, 63) and/or force-connected (49, 29) to the core (11) ; 49', 29') for connection, A coaxially arranged eccentric lever (30), which is operated by the key (18, 18') of the cylinder (11) by the transmission element (20) in an inactive locking position (30, 31) belonging to the lock element and switch between an unlocked position (30', 31') enabling the locking element to be effective, A central interlocking rod (40) arranged coaxially with the transmission member (20), the interlocking rod is connected to the eccentric rod (30) and can rotate together, a central locking device which switches the central locking lever (40) between a locked position and an unlocked position (40, 41; 40', 41'), A pulsating spring (25) which automatically pushes the cartridge (11) back to an in-between zero position after key operation (18, 18') in a locked or unlocked position (51, 51') (50), where the first insertion and extraction of the key can be performed, In this case, the barrel (11) can continue to rotate to a safety position (52), in which the eccentric lever (30) is locked in its locked position (31), and a second key actuation can be performed. Insert into the core (11) or pull out, Its characteristics are: A connecting device (55) is provided between the central locking rod (40) and the eccentric rod (30), although the connecting device is in the locked position, the intermediate position and the unlocked position (31, 41; 50; 31', 41' ) connects these two rods (30, 40) in a torsion-resistant manner, but they can be released in a safe position (52); Between the core (11) and the eccentric rod (30) there is provided a connecting element (60) which is in the safe position ( 52) Connect the cartridge (11) in a rotationally fixed manner to the eccentric rod (30) and turn it to the unlocked position (30', 31') when the key of the cartridge (11) is turned (18"). 2. The idle lock device according to claim 1, characterized in that the core has a control surface (37, 69) of the connecting device (55), the connecting means (55) is spring loaded (59) on the control surface (37, 69); The connecting device (55) is switched between its connected and disconnected positions relative to the central locking lever (40) and the eccentric lever (30) via control surfaces (37, 39). 3. The locking device according to claim 2, characterized in that the connecting device is a guide pin (55) which moves longitudinally in the central locking lever (40) or in the eccentric lever (30), and which is divided into a Short connection section (56) and a long control section (57); This pin (55) is engaged in the radial hole (36; 46) of the eccentric rod (30, 33) and the central locking rod (40, 43), where, although its connecting section (56) produces a co-rotation , but its control section (57) is configured with a rotation stop (38, 38'); Wherein, the end stops (38, 38') allow the central locking lever (40) to rotate between the locked position and the unlocked position (31; 31') with respect to the corresponding angular difference (47) of the eccentric lever (30); The inner end elastic (59) of its control section (57) is supported on the control surface (37,69) of the barrel core (11). 4. The locking device according to one or more of claims 1 to 3, characterized in that the connecting element (60) is freely movable, and the core (11) has a control profile (71, 69), The central locking lever (40) then has an opposing profile (72) of the connecting element (60); The profile shape of the control profile and the counter profile (71, 69; 72) causes a commutation (61; 61') of the connecting element (60) and thus a co-rotation of the eccentric rod (30, 30'). 5. The locking device according to claim 4, characterized in that the connecting element consists of a roller (60), which is loosely arranged in a radial hole (70) of the eccentric rod (30); The roller (60) is pressed with a part of its cross-section or radially inwards into the recessed area (71) of the control profile of the core (11), where the central locking lever (40') is already in the unlocked position In the case of position (41'), in the final stage of the reversal of the core from the safety position (18") to the zero position (50), there is a torsion resistance between the core (11) and the eccentric rod (40') Connection; Or the roller (60) presses a part of its cross section radially outwards from a raised area (69) of the control profile of the core (11) into a recess of the opposing profile of the central locking lever (40, 43). into the zone (72) and creates a torsionally fixed connection between the eccentric rods (30, 33) and the central locking rods (40, 43). 6. Locking device according to one or more of claims 1 to 5, characterized in that: on the one hand the eccentric rod (30, 33) and on the other hand the transmission element (20, 23) has two pairs of common Active shoulders (24, 24') and opposing shoulders (34, 34') which cause the eccentric lever (30) to move in the locked and unlocked positions (31, 31, 31') change direction; The locking of the eccentric rod (30) in the safety position (51) of the core (11) is carried out by a boss (24) on the transmission member (20, 23"), which is supported on the eccentric rod (30 , 33) on a corresponding shoulder (34). 7. Locking device according to one or more of claims 1 to 6, characterized in that the core (11) consists of two interconnected sections (11, 12), one for accommodating the key (15) ) of the outer section (12) and a support transmission (20), eccentric rod (30) and the inner section (11) of the central interlocking rod (40). 8. The locking device as claimed in claim 7, characterized in that an overload clutch is arranged between the two sections (11, 12) of the cartridge.

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