EP1691248B1 - Control device for controling two transmission rods - Google Patents

Abstract

An operating lever (OL) (2) works on bearings in a ball-and-socket joint (4) that allows swiveling movement in the OL in all directions. Linked to the OL, first (9) and second (10) coupling devices (CD) fit on the OL so that, when the OL swivels in a first level of movement, the first CD swivels and only the second CD twists.

Description

1. a) die Betätigungseinrichtung hat einen von Hand bedienbaren Betätigungshebel;
2. b) der Betätigungshebel ist in einem Gelenk gelagert, das eine Verschwenkung des Betätigungshebels in allen Richtungen erlaubt;
3. c) mit dem Betätigungshebel verbunden sind eine erste und eine zweite Kupplungseinrichtung für die Kupplung mit jeweils einem Kraftübertragungsstrang;
4. d) die Kupplungseinrichtungen sind an dem Betätigungshebel derart angeordnet, daß bei Verschwenkung des Betätigungshebels in einer ersten Bewegungsebene die erste Kupplungseinrichtung verschwenkt und die zweite lediglich verdreht wird und bei einer Verschwenkung in einer zweiten, zur ersten senkrechten Bewegungsebene die zweite Kupplungseinrichtung verschwenkt und die erste lediglich verdreht wird;
5. e) dem Gelenk zugeordnet ist eine von Hand betätigbare Sperrvorrichtung,
   • aa) die das Gelenk in einer Freigabestellung derart freigibt, daß der Betätigungshebel in allen Richtungen verschwenkbar ist und damit eine Verschwenkung beider Kupplungseinrichtungen bewirkbar ist;
   • bb) die das Gelenk in einer ersten Sperrstellung derart sperrt, daß der Betätigungshebel ausschließlich in der ersten Bewegungsebene verschwenkbar ist;
   • cc) die das Gelenk in einer zweiten Sperrstellung derart sperrt, daß der Betätigungshebel ausschließlich in der zweiten Bewegungsebene schwenkbar ist;

The invention relates to an actuating device for actuating two power transmission lines with the following features:

1. a) the actuator has a manually operable operating lever;
2. b) the actuating lever is mounted in a joint which allows pivoting of the actuating lever in all directions;
3. c) are connected to the actuating lever, a first and a second clutch device for the clutch, each with a power transmission line;
4. d) the coupling means are arranged on the actuating lever such that upon pivoting of the actuating lever in a first plane of movement pivots the first coupling means and the second is only rotated and pivoted at a pivoting in a second, the first vertical plane of motion, the second coupling means and the first is merely rotated;
5. e) associated with the joint is a manually operable locking device,
   • aa) which releases the joint in a release position such that the actuating lever is pivotable in all directions and thus a pivoting of the two coupling devices is effected;
   • bb) locks the hinge in a first blocking position such that the actuating lever is pivotable only in the first plane of movement;
   • cc) which locks the joint in a second blocking position such that the actuating lever is pivotable only in the second plane of movement;

For the actuation of two hydraulic valves within a hydraulic system, for example for controlling a lift truck on a vehicle actuating devices are known which have a single actuating lever, with the two power transmission lines, for example in Shape of two poles or two wire trains, can be operated together or individually. About the power transmission strands, the movements of the actuating lever can be transferred to the hydraulic valves and thus, for example, the height of the lift truck and tilted if necessary, simultaneously or afterwards. For this purpose, the actuating lever is mounted in a joint which allows pivoting of the actuating lever in principle in all directions. On the actuating lever, a first and a second coupling device are usually mounted in the form of a ball joint, to which the two actuating strands are articulated. The coupling means are arranged at right angles to each other such that upon pivoting of the actuating lever in a first plane of movement, the first coupling device is pivoted and the second is merely rotated and pivoted at a pivoting in a second, the first vertical plane of motion, the second coupling means and the first only twisted becomes. The respective pivoting movement is transmitted to the respective affected power transmission line, while the rotational movement of the respective coupling device has no influence on the attached power transmission line.

If only one of the hydraulic valves to be actuated, it is necessary to release the joint exclusively in a plane of movement and otherwise lock. For this purpose, a locking device is provided which the joint in a release position completely releases, so that the actuating lever is pivotable in all directions and therefore can be acted upon both hydraulic valves. In a first blocking position, the joint is then locked so that the actuating lever is blocked so that it is pivotable only in the first plane of movement, so that only one of the two hydraulic valves is affected. In a second blocking position, it is then reversed. Usually, the locking device has a third locking position in which the operating lever is completely blocked.

The known actuator is complicated and therefore expensive. In addition, it has a high space requirement.

From the US 4,526,055 A an actuator for operating two power transmission trains is known in which the actuating lever is mounted in a universal joint, which allows a pivoting of the actuating lever in several directions. The actuating lever is connected via a first and a second clutch device for the clutch, each with a power transmission line. In addition, a locking device is provided, via which the operating lever can be blocked in a neutral position. This is to avoid that the actuator is operated unintentionally. In addition, the locking device may also be provided with a lock to the unauthorized Use of the provided with the actuator device to prevent.

The invention has the object of providing an actuator of the type mentioned as simple and compact form, so that it is inexpensive to produce, has low weight and little space needed.

• f) das Gelenk ist als Kreuzgelenk ausgebildet;
• g) das Kreuzgelenk hat einen ersten gerätefesten Gelenkzapfen, der sich in der ersten Ebene erstreckt;
• h) auf dem ersten Gelenkzapfen ist ein zweiter Gelenkzapfen drehbar um die Achse des ersten Gelenkzapfens gelagert;
• i) auf dem zweiten Gelenkzapfen ist der Betätigungshebel drehbar um eine Achse gelagert, die senkrecht zur Achse des ersten Gelenkzapfens verläuft;
• j) die Sperrvorrichtung weist eine erste Sperreinrichtung auf;
• k) die erste Sperreinrichtung hat einen Sperrbolzen, der in dem ersten Gelenkzapfen zwischen einer Freigabestellung und einer Blockierstellung verschieblich gelagert ist;
• l) der Sperrbolzen ist zwecks Erreichen der Blockierstellung über den ersten Gelenkzapfen hinaus in eine Blockierausnehmung im Betätigungshebel so weit einschiebbar, daß der Betätigungshebel gegenüber dem zweiten Gelenkzapfen festgelegt ist;
• m) die Sperrvorrichtung weist eine zweite Sperreinrichtung auf, mittels der der zweite Gelenkzapfen drehfest gegenüber dem ersten Gelenkzapfen festlegbar ist.

This object is achieved by the following features:

• f) the joint is designed as a universal joint;
• g) the universal joint has a first device-fixed pivot pin extending in the first plane;
• h) on the first pivot pin, a second pivot pin is rotatably supported about the axis of the first pivot pin;
• i) on the second pivot pin, the operating lever is rotatably supported about an axis which is perpendicular to the axis of the first pivot pin;
• j) the locking device has a first locking device;
• k) the first locking device has a locking pin, which is displaceably mounted in the first pivot pin between a release position and a blocking position;
• l) the locking pin is so far in order to achieve the blocking position on the first pivot pin in a blocking recess in the operating lever inserted so far that the actuating lever is fixed relative to the second pivot pin;
• m) the locking device has a second locking device by means of which the second pivot pin rotationally fixed relative to the first pivot pin is fixed.

The formation of the joint as a universal joint in combination with an existing two locking devices locking device according to the aforementioned features results in a compact and inexpensive to produce construction that is lightweight and has little space. Nevertheless, all functions of the known actuating device can be realized with it, in particular if the two locking devices are designed so that the locking device can be brought into a third blocking position in which both locking devices are simultaneously in their blocking positions.

In an embodiment of the invention it is provided that the locking pin is coaxial with the first longitudinal pin and the first coupling device is arranged coaxially with the first pivot pin. It is also expedient if the second coupling device is arranged coaxially to the pivot axis of the actuating lever to the second pivot pin.

The invention further provides that the second locking means comprises a first and a complementary second engagement member, wherein the second engagement member on the second pivot pin and the first engagement member is movably mounted on the device fixed part of the actuating device, that between a release position and an engaged position is movable, in which the actuating lever is pivotable exclusively in the first plane of movement. It should be the first engagement member to be coupled to the locking pin such that are in a first position locking pin and first engagement member in the release position, that in a second position of the locking pin are still in the release position and the first engagement member in the engaged position and that in a third position of the locking pin in blocking position and the first engaging member in the release position. With this design of the second locking device, it is possible in a structurally simple manner to block the operating lever in one and / or the other plane. Preferably, the first engagement member should be coupled to the locking pin such that are in a fourth position of the locking pin in the blocking position and the engagement member in the engaged position, so that the operating lever can be completely blocked in a certain center position.

It is expedient that the first, second, third and optionally fourth positions in a direction of movement of the locking bolt are behind one another, wherein the order may be quite different.

The second engagement element may, for example, be formed as an engagement recess in an engagement disk which is rotatable with the joint journal, and the first engagement element may be movably mounted transversely to the engagement disk. Then, the first engagement element should be shaped so that it moves into the first and third position does not engage in the engagement recess, but engages in a movement in the second and possibly fourth position in the engagement recess. For this purpose, the first engagement element may, for example, have a correspondingly shaped toothing whose teeth then engage in the above-described positions in the engagement recess and whose tooth gaps release the engagement disc. The first engagement element should then run parallel to the blocking bolt and be rigidly connected thereto.

According to the invention it is further provided that the locking pin is connected to an external handle, via which it can be moved in the manner described above. This can be done in such a way that the locking pin is firmly connected to the handle so that a sliding movement must be exerted on the handle to move the locking pin. Alternatively, it can be provided that the handle is designed as a rotary handle, which is connected via a transmission, for example a kind of spindle gear, with the locking pin, that a rotational movement of the rotary handle is converted into a longitudinal movement of the locking pin. Depending on the arrangement in this way the actuator is easier to use. In this case, the locking pin should cooperate with a locking device, which causes a locking in different positions, in particular the above-mentioned positions.

Figur 1

die erfindungsgemäße Betätigungseinrichtung in perspektivischer Darstellung;

Figur 2

einen Vertikalschnitt durch die Betätigungseinrichtung gemäß Figur 1 in der zweiten Bewegungsebene;

Figur 3

eine Seitenansicht der Betätigungseinrichtung gemäß den Figuren 1 und 2 mit Teilschnitt durch das Gelenk in der Freigabestellung;

Figur 4

die Betätigungseinrichtung in der Ansicht gemäß Figur 3 mit der Sperrvorrichtung in der ersten Sperrstellung;

Figur 5

die Betätigungseinrichtung in der Ansicht gemäß den Figuren 3 und 4 mit der Sperrvorrichtung in der zweiten Sperrstellung und

Figur 6

die Betätigungseinrichtung gemäß den Figuren 3 bis 5 mit der Sperrvorrichtung in der dritten Sperrstellung.

In the drawing, the invention with reference to an embodiment is illustrated in more detail. Show it:

FIG. 1

the actuating device according to the invention in a perspective view;

FIG. 2

a vertical section through the actuator according to FIG. 1 in the second movement plane;

FIG. 3

a side view of the actuator according to the FIGS. 1 and 2 with partial section through the joint in the release position;

FIG. 4

the actuator in the view according to FIG. 3 with the locking device in the first locking position;

FIG. 5

the actuator in the view according to the Figures 3 and 4 with the locking device in the second locking position and

FIG. 6

the actuator according to the FIGS. 3 to 5 with the locking device in the third locking position.

In the FIG. 1 illustrated actuator 1 has an actuating lever 2, which has an operating handle 3 at the free end, via which the actuating lever 2 can be grasped by hand. The actuating lever 2 is mounted on a device holder 5 via a universal joint 4. The device holder 5 is intended, for example, to be firmly connected to a vehicle in the area of the driver's seat. The device holder 5 consists of two mutually perpendicular support surfaces 6, 7 and a bottom plate 8, wherein the universal joint 4 is suspended from the left support plate 6.

In the area of the universal joint 4, two ball heads 9, 10 project, which are aligned at right angles to each other. At this ball heads 9, 10 can each be a wire - but also a linkage - are articulated. By means of these wire cables force can be transmitted by pivoting the actuating lever 2 on to be actuated members, such as hydraulic valves, which are connected to the other ends of the wire draw.

The floor panel 8 has two suspension openings 11, 12, in which the guide sheaths of the wire cables can be hung.

In the FIGS. 2 to 6 are details of the universal joint 4 and the associated parts can be seen by sectional views. On the support plate 6, a first pivot pin 13 is firmly attached. It stretches horizontally. Through him - as well as by the support plate 6 - coaxially passes through a guide bore 14, in a locking pin 15 is slidably mounted. The locking pin 15 protrudes from the back of the support plate 6 and has at its free end a handle 16, over which the locking pin 15 can be moved by hand.

On the first pivot pin 13, a second pivot pin 17 is rotatably supported about the longitudinal axis of the first pivot pin 13. The second pivot pin 17 extends transversely to this longitudinal axis. On the second pivot pin 17, the operating lever 2 is rotatably mounted about the axis of the second pivot pin 17 which is perpendicular to the longitudinal axis of the first pivot pin 13, stored. For this purpose, the actuating lever 2 a foot piece 18 which is forked on the bottom side and the second pivot pin 17 in the region of its ends to form two bearings 19, 20 (FIGS. FIG. 2 ) surrounds.

The forward projecting ball head 9 is fixed to the foot piece 18 such that the longitudinal axis of the first pivot pin 13 passes through the center thereof. The other ball head 10 is mounted on the end face of the second pivot pin 17 so that it is coaxial with the axis of rotation of the foot piece 18.

Connected to the second pivot pin 17 is an engagement disc 21, which rotates with a rotation of the second pivot pin 17. The engagement disc 21 has a radially extending outwardly at the bottom open engagement groove 22. The engagement groove 22 is part of a locking device 23, which also includes a pawl 24 which is connected via a connecting plate 25 rigidly connected to the locking pin 15, runs parallel to this, while the mounting plate 6 passes. The pawl 24 has a groove-shaped recess 26 on the top side.

The foot 18 of the actuating lever 2 has a blocking recess 27, which is coaxial with the guide bore 14 in the vertical position of the actuating lever 2, as it results from all figures and is dimensioned so that the locking pin 15 in this position of the actuating lever 2 in the Blocking recess 27 can be inserted. The locking pin 15 and the blocking recess 27 form in this way a further locking device 28th

The locking pin 15 has in the longitudinal axis lying behind each other four locking grooves - exemplified by 29 - on, which cooperate with a locking pin 30 which is guided transversely to the longitudinal axis of the locking pin 15 slidably in a continuation of the first pivot pin 13. When the locking pin 30 engages in one of the locking grooves 29, the locking pin 15 is secured against independent axial displacement. However, the locking pin 30 allows a shift from the respective position to another position by handling the handle 16.

In FIG. 3 is the locking pin 15 in a rearmost farthest first position. In this position, the locking pin 15 projects only approximately into the middle of the universal joint 4. The pawl 24 is located with its free end outside the range of movement of the engagement disk 21. In this release position, the actuating lever 2 can be pivoted about the second pivot pin 17. At the same time, the operating lever 2 with the second pivot pin 17 can be pivoted about the first pivot pin 13. Both pivoting movements can be superimposed, so that the actuating lever 2 can be pivoted in substantially all directions. In this way, both ball heads 9, 10 are pivoted with the result that forces on both wire trains and thus on both organs to be operated are transferable.

Out FIG. 4 is compared to FIG. 3 to see that the locking pin 15 has been inserted by actuation of the handle 16 to a locking groove 29 in the guide bore 14. In this position, the locking pin 15 is still within the guide bore 14, so it is ineffective. In contrast, the free end of the pawl 24 is retracted into the engagement groove 22 and thus locks the second pivot pin 17 with the result that it can not be rotated in the horizontal position shown. In this first blocking position, therefore, the actuating lever 2 can only be pivoted about the second pivot pin 14, ie in the plane of the drawing. At a such pivotal movement of the ball head 10 is only rotated, so that no force is transmitted to the wire connected thereto. In contrast, the other ball head 9 is pivoted to the actuating lever 2, taking with it the force transmitting wire of the wire train.

In FIG. 5 the locking pin 15 has been pushed further into the guide bore 15 by a locking groove, and indeed so far that it protrudes with its free end a piece into the blocking recess 27. In this way, the actuating lever 2 is blocked in its rotational movement about the second pivot pin 17, ie it can not be pivoted about the second pivot pin 17. With the locking pin 15 and the pawl 24 has been moved so that the recess 26 is opposite to the engagement disc 21. The recess 26 is so deep that the pawl 24 and engagement disc 21 are disengaged, so that the engagement disc 21 and thus the second pivot pin 17 can move freely. The actuating lever 2 thus remains pivotable in a plane perpendicular to the plane of the drawing. In such a pivoting movement, only the ball head 10 is pivoted, while the ball head 9 is merely rotated. A power transmission then takes place only via the ball head 10 and the wire link articulated thereto.

In FIG. 6 is the locking pin 15 again to a locking groove 29 in the guide bore 14 and thus even further in the Blocking recess 27 has been inserted. Thus, the blocking of the operating lever 2 is maintained around the second pivot pin 17. With the locking pin 15 and the pawl 24 has been moved, and so far that now the recess 26 is beyond the engaging disc 21 and thus the pawl 24 has come back into engagement with the engagement groove 22. As a result, engaging disc 21 and thus the pivot pin 2 is blocked. Consequently, the operating lever 2 is locked in all directions. A power transmission to the hinged to the ball heads 9, 10 wires is not possible.

It is understood that the above four positions - a release order ( FIG. 3 ) and the two above-described blocking positions ( FIGS. 4 and 5 ) - can be reached again by pulling action on the handle 16.

Claims (16)

1. Actuation device (1) for the actuation of two power transmission lines with the following characteristics:

   a) the actuation device (1) has an actuating lever (2) operable by hand;

   b) the actuating lever (2) is based in a joint (4) which permits a pivoting of the actuating lever (2) in all directions;

   c) connected with the actuating lever (2) there are a first and a second coupling device (9, 10) for coupling each with a power transmission line;

   d) the coupling devices (9, 19) are fitted on the actuating lever (2) in such a way that with pivoting of the actuating lever (2) in a first plane of movement the first coupling device (9) pivots and the second is only rotated and with a pivoting in a second plane of movement perpendicular to the first the second coupling device (10) pivots and the first is only rotated;

   e) fitted to the joint (4) there is a hand operable locking device,

   aa) which in a release position releases the joint in such a manner that the actuating lever (2) is pivotable in all directions and herewith a pivoting of both coupling devices (9, 10) can be effected;

   bb) which locks the joint (4) in a first locking position in such a manner that the actuating lever (2) is pivotable exclusively in the first plane of movement;

   cc) which locks the joint (4) in a second locking position in such a manner that the actuating lever (2) is pivotable exclusively in the second plane of movement;

   characterised by the following characteristics:

   f) the joint is formed as a universal joint (4);

   g) the universal joint (4) has a first hinge pin (13) fixed to the appliance, which extends in the first plane;

   h) on the first hinge pin (13) there is a second hinge pin (17) mounted rotably around the axis of the first hinge pin ;

   i) on the second hinge pin (17) the actuating lever (2) is mounted rotably around an axis which runs perpendicularly to the axis of the first hinge pin (13);

   j) the locking device (28) exhibits a first locking appliance (28);

   k) the first locking appliance (28) has a locking bolt (15) which is mounted movably in the first hinge pin (13) between a release position and a blocking position;

   l) the locking bolt (15) is, for the purpose of reaching the blocking position beyond the first hinge pin (13) into a blocking cut-out (27), so far movable in the actuating lever that the actuating lever (2) that it is fixed opposite the second hinge pin (17);

   m) the locking device exhibits a second locking appliance (23), by means of which the second hinge pin (17) is fixable without being able to rotate opposite the first hinge pin (13).
2. Actuation device according to claim 1, characterised by the fact that for the reaching of a third locking position the two locking appliances (23, 28) can be actuated in such a manner that both locking appliances are simultaneously situated in their locking positions.
3. Actuation device according to claim 1 or 2, characterised by the fact that the locking bolt (15) runs coaxially with the first hinge pin (13).
4. Actuation device according to one of the claims 1 to 3, characterised by the fact that the first coupling device (9) is fitted coaxially to the first hinge pin (13).
5. Actuation device according to one of the claims 1 to 4, characterised by the fact that the second coupling device (10) is fitted coaxially to the axis of pivoting of the actuating lever (2) around the second hinge pin (17).
6. Actuation device according to one of the claims 1 to 5, characterised by the fact that the second locking appliance (23) exhibits a first intervention organ and a second one complementary to it (22, 24), with the second intervention organ (22) being fitted on the second hinge pin (17) and the first intervention organ (24) being movably mounted on the part of the actuation device (1) fixed to the equipment in such a way that it is movable between a release position and an intervention position in which the actuating lever (2) is pivotable exclusively in the first plane of movement.
7. Actuation device according to claim 6, characterised by the fact that the first intervention organ (24) is coupled with the locking bolt (15) in such a manner that in a first position (release position) locking bolt (15) and first intervention organ (24) are in the release position, that in a second position (first locking position) the locking bolt (15) is still in the release position and the intervention organ (24) in the intervention position and that in a third position (second locking position) the locking bolt (15) is in the locking position and the first intervention organ (24) in the release position.
8. Actuation device according to claim 7, characterised by the fact that the first intervention organ (24) is coupled with the locking bolt (15) in such a manner that in a fourth position (third locking position) the locking bolt (15) is in the locking position and the first intervention organ (24) in the intervention position.
9. Actuation device according to claim 7 or 8, characterised by the fact that the first, second, third and if present the fourth positions are situated one behind the other in a direction of movement of the locking bolt (15).
10. Actuation device according to one of the claims 7 to 9, characterised by the fact that the second intervention element (22) is formed as an intervention cut-out in an intervention disc (21) rotable with the second hinge pin and the first intervention element (24) is formed in such a manner that with a movement into the first and third position it does not engage in the intervention cut-out (22), but with a movement into the second and if present the fourth position it engages in the intervention cut-out (22).
11. Actuation device according to claim 10, characterised by the fact that the first intervention element (24) exhibits a toothing.
12. Actuation device according to claim 10 or 11, characterised by the fact that the first intervention element (24) runs parallel to the locking bolt (15) and is rigidly connected with this.
13. Actuation device according to one of the claims 1 to 12, characterised by the fact that the locking bolt (15) is connected with an externally situated handle (16).
14. Actuation device according to claim 13, characterised by the fact that the locking bolt (15) is fixedly connected with the handle (16).
15. Actuation device according to claim 13, characterised by the fact that the handle is formed as a rotable control grip which is connected with the locking bolt via a gearing in such a manner that a rotary movement of the control grip is converted into a longitudinal movement of the locking bolt.
16. Actuation device according to one of the claims 1 to 15, characterised by the fact that the locking bolt (15) works in conjunction with a stop device (29. 30) which effects an engaging in different positions.

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