DE102012100635B4 - Cable pull adjustment, actuator and braking device - Google Patents

Abstract

Cable pull adjustment for a cable pull (4), in particular for brake devices (2) of vehicles, wherein the cable pull adjustment (1) a tensioning the cable (4) and with an actuating member (3), in particular a hand brake lever, the braking devices (2) connectable adjusting device ( 5), wherein the adjusting device (5) has a rotatable and by a clamping element (15) acted upon winding element (14) for at least partially winding the cable (4) or connected to the cable (4) transmission means (6), wherein the Clamping element (15) is designed as a torsion bar (28).

Description

The invention relates to a cable pull adjustment. Furthermore, the invention relates to an actuator and a braking device with the features in the preamble of the respective independent claims.

Such a cable adjustment is from the DE 20 2006 018 319 U1 known. It has an adjusting device for one or more cables, which has a rack with a clamping housing, a wedge-shaped clamping element and a locking mechanism and acting in the longitudinal direction of the rod linear compression spring. The adjusting device is arranged on a pivotable handbrake lever and can be moved in its release position against a stop which opens the locking mechanism and the spring for tightening the tie rod and for tensioning the cable pull can be effective.

The DE 43 36 221 A1 shows an adjustment device for a motor vehicle parking brake, which shows two mutually displaceable and provided with a toothing adjustment elements, which can be mutually fixed by means of a clamping device.

The DE 689 09 699 T2 and the US 5 907 977 A disclose each Seilzugeinstellungen, actuators and brake devices, which are used as adjusting devices acted upon by a clamping element winding elements.

It is an object of the present invention to provide a different and improved cable adjustment together with actuator and braking device.

The invention solves this problem with the features in the independent claims. The cable pull adjustment has the advantage that it manages with few and simple components and is inexpensive and easy to assemble and operate. It also takes up little space. It also offers a high degree of operational safety and can be retensioned if necessary.

The cable pull adjustment can be in original equipment with an actuator, in particular a hand brake lever, connected and delivered together. On the other hand, retrofitting to actuators, especially hand brake lever, foot pedals or the like. Possible.

The adjusting device has a clamping element, which can be tensioned manually and, if necessary, tightened. The voltage can be rotational and done by means of a torque wrench with a selectable torque. The bias of the adjustment can be made with commercially available tools, e.g. Fork wrenches are performed. The adjusting device can be required again also solve, the adjustment can be variable. Also favorable is the integrability of the adjusting device in a handbrake lever. In addition, there is the possibility of extension into an automatic adjustment, e.g. an additional spring is used. The cable pull adjustment is particularly suitable for primary ropes. However, it can also be used for jacketed cables, e.g. Bowden cables, are used.

The adjusting device has a winding element and a clamping element, which can be secured against unwanted turning back and supported. A tension can be applied by a torsion element, in particular a torsion bar, which allows relatively high tensioning and adjusting forces.

The cable pull adjustment is suitable for a wide variety of applications. A preferred field of use are braking devices, in particular parking brakes, of vehicles.

In the subclaims further advantageous embodiments of the invention are given.

The invention is illustrated by way of example and schematically in the drawings. In detail show:

1 a brake device with a hand brake lever and a cable pull adjustment with adjusting device,

2 : a top view of the arrangement of 1 .

3 a section through the arrangement according to section line III-III of 1 .

4 : an exploded view of the hand brake lever and the parts of the cable pull adjustment,

5 : an enlarged detail view of the adjustment of 1 and

6 : an enlarged view of the in 4 shown items the cable pull adjustment with a handbrake lever shown canceled.

The invention relates to a cable pull adjustment ( 1 ) for a cable ( 4 ), in particular for braking devices ( 2 ) of vehicles. The invention further relates to a braking device ( 2 ) as well as a Actuator ( 3 ) with such a cable adjustment ( 1 ).

1 and 2 show in the side view and in plan view the cable pull adjustment ( 1 ) and parts of the braking device ( 2 ), which may be formed in any suitable manner and which is formed in the embodiment shown as a parking brake device of a vehicle (not shown). The braking device ( 2 ) has a cable ( 4 ), which is designed for example as a brake cable. The cable ( 4 ) can be single or multiple. He can get out of a mere rope ( 11 ) consist. The cable ( 4 ) may alternatively be formed as a sheathed cable, which is a rope or a soul ( 11 ) and a surrounding jacket (not shown). The braking device ( 2 ) may further comprise one or more wheel brakes (not shown) connected to the cable ( 4 ) are connected.

The braking device ( 2 ) has an actuator ( 3 ), which may be formed in any suitable manner. In the embodiment shown is a handbrake lever, which is about a pivot axis ( 7 ) on a rack ( 8th ) is pivotally mounted. At the upper end of the hand brake lever ( 4 ) a handle ( 10 ). Here also an actuating device for a latching device for fixing the handbrake lever ( 3 ) may be present in different pivot positions. The pivot axis ( 7 ) is of a bearing sleeve ( 9 ) surround. In a modification of the embodiment shown, the actuating member ( 3 ) be designed as a pedal or the like.

The actuator ( 3 ) is with the cable ( 4 ) via an intermediate cable pull adjustment ( 1 ) connected. This has an adjusting device ( 5 ), which the cable ( 4 ) and thereby any play or wear-related elongations in the cable ( 4 ) compensates. The adjusting device ( 5 ) can with the actuator ( 3 ) get connected. In the illustrated embodiment, it is at least partially in the actuator ( 3 ) integrated.

The cable ( 4 ) can be used directly with the adjuster ( 5 ) get connected. In the exemplary embodiment shown, a transmission means ( 6 ). In the embodiment, four cables ( 4 ) present in pairs on each compensation element ( 12 ) are mounted, which is designed for example as a pivoting balance beam. The transmission means ( 6 ) with one or more compensation elements ( 12 ) on the one hand and the adjusting device ( 5 ) on the other hand. It can be protected in the frame ( 8th ) and eg by a in 1 and 5 surrounded bellows.

In the embodiment shown, the transmission means ( 6 ) formed in several parts. It consists for example of a flexurally elastic and tensile tensile element ( 13 ), which is designed as a rope, for example. The rope guided in one or more strands ( 13 ), the front end of the transmission means ( 6 ) and can be adjusted with the adjusting device ( 5 ). The rear end of the transmission means ( 6 ), which also with the one or more compensation elements ( 12 ) can be connected, for example, is formed by a rigid pull rod. The drawbar and the rope ( 13 ) may be connected to each other in a manner not shown tensile strength.

The adjusting device ( 5 ) has a rotatable winding element ( 14 ), on which in the embodiment shown the tension element ( 13 ) can be wound up at least partially. Instead of the tension element ( 13 ) can also be the cable ( 4 ) or its rope ( 11 ) directly with the winding element ( 14 ) and wound up on this at least partially. The tension element ( 13 ) or the rope ( 11 ) wraps around a jacket of the winding element ( 14 ) at least at a portion of the circumference. The wrap angle can be for example about 90 °.

The rotatable winding element ( 14 ) is from a clamping element ( 15 ) and in a direction of rotation or clamping direction ( 25 ) turned. In this case, a spring tension is applied, with which the cable ( 4 ) is tense. Any subsidence or elongation in the cable ( 4 ) can be achieved by further rotation of the winding element ( 14 ) with partial relaxation of the clamping element ( 15 ).

The winding element ( 14 ) has a reverse lock ( 16 ), which is a reverse rotation against the rotational or clamping direction ( 25 ) prevented. The rotatable and tensionable tensioning element ( 15 ) has a support ( 17 ), which is also a reverse rotation of the clamping element ( 15 ) against the turning or clamping direction ( 25 ) prevented. The reverse rotation lock ( 16 ) and the support ( 17 ) can be designed as freewheels. For this purpose, different structural configurations are possible. Hereinafter, an embodiment is described.

In the embodiment shown, the tensioning element ( 15 ) in the winding element ( 14 ) and can be manually clamped, which can be done for example by means of a fork wrench or a torque wrench. The winding element ( 14 ) and the tensioning element ( 15 ) can be connected to the actuator ( 3 ) are stored rotating.

The winding element ( 14 ) has in the illustrated embodiment, a cylindrical drum having a fixation ( 20 ) for the cable ( 4 ) respectively. whose rope ( 11 ) or for the transmission element ( 6 ), in particular its rope ( 13 ), having. Furthermore, the tension or rope drum ( 18 ) also one or more peripheral grooves ( 19 ), in particular cable grooves. The rope grooves ( 19 ) can be one or more strands of the rope ( 11 . 13 ) record and lead. The fixation ( 20 ) can according to the detailed representation of 6 eg as a through hole in the drum shell and in the area of a groove ( 19 ), wherein the rope ( 11 . 13 ) in a loop through the holes and in the annular grooves ( 19 ) can be performed.

The drum ( 18 ) can according to 3 at one end in a drum bearing ( 21 ), which, for example, as a bearing seat on the hand brake lever ( 3 ) is trained. The opposite drum bearing ( 22 ) can be formed by a bearing pin, which projects into the hollow drum interior and with an outside flange in a suitable manner on the frame ( 8th ) is supported and possibly fixed.

The winding element ( 14 ) or its drum ( 18 ) is parallel to the pivot axis ( 7 ) and laterally offset to this axis ( 7 ) on the handbrake lever ( 3 ) arranged.

The tensioning element ( 15 ) is located in the hollow interior of the drum ( 18 ) and is in the illustrated embodiment as a torsion bar ( 28 ) educated. The tensioning element ( 15 ) or the torsion bar ( 28 ) is at one end of the bar ( 29 ) with the winding element ( 14 ) or the drum ( 18 ) and projects with the other end of the rod ( 29 ) by a breakthrough at the lower end of the handbrake lever ( 3 ) to the outside and is accessible at this point for an operation. The torsion bar ( 28 ) is centric and equiaxial to the drum ( 18 ) arranged. The one rod store ( 31 ) serves the connection with the drum ( 18 ) and is rotationally fixed on the rod end ( 29 ) mounted bearing sleeve formed. The other rod store ( 32 ) is moved from a bearing seat ( 32 ) on the outside of the handbrake lever ( 3 ) educated.

The torsion bar ( 28 ) shows at both bar ends ( 29 ) each have a rotary connection ( 30 ), which may be formed in any suitable manner and, for example, consists of an external hexagon. The bearing sleeve ( 31 ) has a corresponding and designed as a hexagon inner bore, via which a rotational lock to the torsion bar ( 28 ) can be produced. On the outside is the bearing sleeve ( 31 ) with the surrounding drum ( 18 ) by a positive connection, frictional engagement or other suitable manner rotationally connected.

The rotary connection ( 30 ) at the other end of the bar ( 29 protrudes from the actuator ( 3 ) out. Here a suitable turning tool, such as an open-end wrench, can be used.

The reverse rotation lock ( 16 ) or the freewheel of the winding element ( 14 ) is in the illustrated embodiment of a wrap ( 24 ) formed on the drum ( 18 ) is mounted and is connected to the jacket by frictional or clamping. The wrap spring ( 24 ) is designed as a tightly wound coil spring and has two laterally projecting spring ends ( 26 . 27 ) on. The winding direction of the wrap spring ( 24 ) is chosen such that the wrap spring ( 24 ) during a rotation in the direction of rotation or clamping ( 25 ) opens and a rotation of the winding element ( 14 ) in this direction. When turning against the clamping direction ( 25 ) the wrap spring shrinks ( 24 ) in diameter and holds the drum ( 18 ) clamping, preventing their reverse rotation.

The wrap spring ( 24 ) is with the one spring end ( 26 ) on the actuator ( 3 ) by means of a fixation ( 35 ). The spring end ( 26 ) can, for example, at one side of the bearing sleeve ( 9 ) are hung hanging support bracket. The other end of the spring ( 27 ) can close to the body of the handbrake lever ( 3 ) and stand free. The free spring end ( 27 ) can be set manually in the direction of rotation ( 25 ), whereby the wrap spring ( 24 ) widens and the drum ( 18 ) releases for a reverse rotation, wherein also the clamping element ( 15 ) or the torsion bar ( 28 ) relaxed.

The support ( 17 ) of the clamping element ( 15 ) or Torsionsstabs ( 28 ) is eg on the outside of the actuator ( 3 ) and can for storage of the torsion bar ( 28 ) in conjunction with the bearing seat ( 32 ) to be used. In the illustrated embodiment, the support ( 17 ) from one with the rotary connector ( 30 ) rotatably connected perforated disc ( 33 ) formed in 6 is shown enlarged. The perforated disc ( 33 ) has on the outside a ring of holes or openings, which with one or more locking elements ( 34 ) on the actuator ( 3 ) according to 3 interact. The blocking element ( 34 ) may be formed, for example, as a wedge-shaped nose whose oblique wedge surface in the case of a perforated disk rotation in the direction of rotation or clamping ( 25 ) is effective and slipping of the perforated disc ( 33 ) allowed. A reverse rotation is prevented by the steep wedge nose front.

A perforated disc ( 33 ) can with a in 4 and 6 spring washer are combined, which the perforated disc ( 33 ) on the one or more locking elements ( 34 ) and while doing so at the bearing seat ( 32 ) is supported. The drum bearing ( 22 ) or its bearing pin can on the outside with a curved shield ( 23 ), which in assembly position the drum ( 18 ) in the groove area and the rope layer in the groove (s) ( 19 ) secures.

For commissioning the cable pull adjustment ( 1 ) and the braking device ( 2 ) is applied to the initially relaxed adjusting device ( 5 ) the cable ( 4 ) or its rope ( 11 ) or the flexurally elastic tension element ( 13 ) of the transmission means ( 6 ) by means of fixation ( 20 ). Subsequently, with the aforementioned tool, the clamping element ( 15 ), wherein the winding element ( 14 ) is taken. During this rotation in the direction ( 25 ) the cable ( 4 ) streamlined by taking the existing assembly game. The tensioning element ( 15 ) will continue in the direction of 25 ), wherein the winding element ( 14 ) stops and the torsion bar ( 28 ) is twisted and stretched. The final clamping position is achieved by the reverse rotation lock ( 16 ) and the support ( 17 ) secured. The spring force of the tensioning element ( 15 ) is preferably smaller than the restoring force of the existing in the wheel brakes release springs. The tensioned cable ( 4 ), the pivoting movements of the actuator ( 3 ) transmitted to the wheel brakes. Here, the winding element ( 14 ), where the cable ( 4 ) or the transmission means ( 6 ) is fixed to the pivot axis ( 7 ) turned. The reverse rotation lock ( 16 ) and the support ( 17 ) prevent a reverse rotation of the winding element ( 14 ) and a relaxation of the clamping element ( 15 ), so that the actuating forces without delay on the cable ( 4 ) be transmitted. If in operation elongations of the cable ( 4 ), the winding element ( 14 ) under the action of the tension element ( 15 ) and releasing the reverse rotation lock ( 16 ) in clamping direction ( 25 ) turn a little bit further and pull the cable ( 4 ) tighten again. If after some adjustments the clamping force or spring force in the clamping element ( 15 ) is reduced or used up via the rotary connection ( 30 ) with a tool, the clamping element ( 15 ) are tightened manually.

Variations of the embodiments shown and described are possible in various ways. The tensioning element ( 15 ) may be formed in other ways, for example as other torsion or torsion spring. Likewise, the support ( 17 ) change accordingly. The winding element ( 14 ) can take place as a drum ( 18 ) be designed as a disc. Design changes are also in terms of its storage and rope fixing ( 20 ) possible. The freewheels ( 16 . 17 ) can be structurally modified and equipped with wedges, notches or the like. Also the transmission element ( 6 ) can be modified constructively. On compensation elements ( 12 ) can be omitted. The braking device ( 2 ) may also be designed as a service brake.

LIST OF REFERENCE NUMBERS

1

 cable setting

2

 Brake device, parking brake

3

 Actuator, handbrake lever

4

 Cable, brake cable

5

 readjustment

6

 transmission means

7

 swivel axis

8th

 frame

9

 bearing sleeve

10

 Handle

11

 Soul, rope

12

 Compensation element, balance beam

13

 Tensile element flexurally elastic, pull rope

14

 winding element

15

 clamping element

16

 Reversing lock, freewheel

17

 Support, freewheel

18

 Drum, tensioning drum, cable drum

19

 Groove, rope groove

20

 Fixation, rope fixing

21

 Drum bearings, bearing seat on the lever

22

 Drum bearings, bearing bolts

23

 sign

24

 wrap

25

 Direction of rotation, clamping direction

26

 Feather end fixed

27

 Spring end free

28

 torsion bar

29

 rod end

30

 Rotary connection, external hexagon

31

 Rod bearing, bearing sleeve

32

 Rod storage, bearing seat

33

 perforated disc

34

 Locking element, wedge nose

35

 Fixation, spring fixation

Claims (14)

Cable pull adjustment for a cable pull ( 4 ), in particular for braking devices ( 2 ) of vehicles, the cable-pull adjustment ( 1 ) a cable ( 4 ) exciting and with an actuator ( 3 ), in particular a hand brake lever, the brake devices ( 2 ) connectable adjustment device ( 5 ), wherein the adjusting device ( 5 ) a rotatable and a clamping element ( 15 ) acted upon winding element ( 14 ) for at least partially winding the cable ( 4 ) or one with the cable ( 4 ) associated transmission means ( 6 ), wherein the tensioning element ( 15 ) as a torsion bar ( 28 ) is trained. Cable pull adjustment according to claim 1, characterized in that the winding element ( 14 ) a reverse lock ( 16 ) having. Seilzugeinstellung according to claim 1 or 2, characterized in that the rotating tensionable torsion bar ( 28 ) in the winding element ( 14 ) and a support ( 17 ) having. Cable pull adjustment according to claim 3, characterized in that the reverse rotation lock ( 16 ) and the support ( 17 ) are designed as freewheels which rotate in the clamping direction ( 25 ) and lock in the opposite direction. Cable pull adjustment according to one of the preceding claims, characterized in that the winding element ( 14 ) one on the actuator ( 3 ) rotatable drum ( 18 ) with a fixation ( 20 ) for the cable ( 4 ) or for one with the cable ( 4 ) connected transmission element ( 6 ) having. Cable pull adjustment according to one of claims 2 to 5, characterized in that the reverse rotation lock ( 16 ) a wrap spring ( 24 ) having. Cable pull adjustment according to claim 6, characterized in that the wrap spring ( 24 ) with a spring end ( 26 ) on the actuator ( 3 ) fixable ( 35 ). Cable pull adjustment according to one of the preceding claims, characterized in that the torsion bar ( 28 ) with the winding element ( 14 ), in particular with the drum ( 18 ), rotationally connected and on the actuator ( 3 ) storable and supportable. Cable pull adjustment according to one of the preceding claims, characterized in that the torsion bar ( 28 ) at both bar ends ( 29 ) a rotary connection ( 30 ), in particular an external hexagon. Cable pull adjustment according to one of claims 3 to 9, characterized in that the support ( 17 ) of the torsion bar ( 28 ) one with the actuator ( 3 ) and a blocking element ( 34 ), in particular a wedge nose, cooperating perforated disc ( 33 ) having. Cable pull adjustment according to one of the preceding claims, characterized in that the cable pull adjustment ( 1 ) an at least partially flexurally elastic and tensile transmission means ( 6 ) for connecting a cable ( 4 ) with the winding element ( 14 ) having. Cable pull adjustment according to one of the preceding claims, characterized in that the cable pull adjustment ( 1 ) at a distance next to the pivot axis ( 7 ) of the actuator ( 3 ) is arranged. Actuator ( 3 ), in particular handbrake lever, for a brake device ( 2 ), in particular parking brake, for vehicles, wherein the actuating member ( 3 ) via a cable pull adjustment ( 1 ) and with a cable ( 4 ), wherein the cable pull adjustment ( 1 ) an adjusting device ( 5 ), which the cable ( 4 ) and with the actuator ( 3 ), characterized in that the cable pull adjustment ( 1 ) is formed according to at least one of claims 1 to 12. Braking device, in particular parking brake, for vehicles, wherein the braking device ( 2 ) an actuator ( 3 ), in particular a hand brake lever, a cable ( 4 ) and a cable pull adjustment ( 1 ) with an adjusting device ( 5 ), which the cable ( 4 ) and with the actuator ( 3 ), characterized in that the cable pull adjustment ( 1 ) is formed according to at least one of claims 1 to 12.

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