RU2776755C1 - Blocking element for removable blocking of rotational movement of adapter relative to control rod body and control rod containing such blocking element - Google Patents

Abstract

FIELD: blocking elements.

SUBSTANCE: invention relates to a blocking element (1) for removable blocking of the adapter (3) relative to the body (4) of the control rod (2), containing the arm (5) of the lever and the pin (6) connected to the arm (5) of the lever, the element (7) snap action and locking element (8). The latch action element (7) is rotatably connected to the lever arm (5), wherein the latch action element (7) is rotatably connected to the lever arm (5) around the rotation axis (B) running parallel to the pin (6). A control rod (2) is also claimed, which contains such a blocking element (1).

EFFECT: increasing the flexibility of using the blocking element (1) on the control rod (2).

16 cl, 47 dwg

Description

SUBSTANCE: invention relates to a blocking element for removable blocking of rotational movement of an adapter relative to a push-pull type control rod housing, comprising a lever arm and a pin connected to the lever arm, a snap action element and a locking element.

The invention also relates to a control rod comprising such a blocking element, an adapter and a housing.

Control rods are used, for example, in aviation. They typically comprise a body, typically containing a tubular section, and an adapter located at least at one end of the body or partially received into the body at one end. The control rod can be assembled using an adapter or adapters. Control rods are usually adjustable in length so that the control rod can be adjusted in length according to a given distance from knot points or to compensate for tolerance. The adapter and housing are rotatable relative to each other and each has a thread. The thread can be made, for example, on the section of the inner side surface of the housing and on the section of the outer side surface of the adapter. Thus, the length of the control rod can be changed by rotating the adapter relative to the body.

For a removable blocking of the rotational movement of the adapter relative to the housing, an appropriate blocking element is usually used. Said blocking element, on the one hand, contains a pin that can be inserted into the lugs of the adapter. The blocking element also contains a snap-action element for snapping on or around the side surface of the housing, and a locking device that interacts with the counter-element on the housing and, thus, provides a removable blocking (fixation) of the rotational movement of the adapter relative to the housing. The finger is first inserted into the lugs of the adapter, and then the blocking element is folded so that the snap action element snaps onto the counter element on the body. Such a control rod is described, for example, in patent document DE202004016321U1.

The installation or assembly of the control rod is often done in confined spaces and in conditions of limited access, such as when assembling the overhead compartments of an aircraft. It can often be the case that access is only in the direction of insertion of the finger into the control rod adapter (for example, in the longitudinal direction of the aircraft from front to back), and in the second direction. The alignment of the second direction may mean, for example, that the blocking element can only be folded up from the bottom after the finger has been inserted into the adapter, since there is no access from above. Thus, the assembly of an adapter similar to that described in patent document DE202004016321U1 can be made (and therefore is practically feasible) on only one side of the aircraft; on the other side, this would not be possible, as mirrored conditions would be present here.

Thus, the object of the invention is to provide a blocking element for a control rod of the above type, as well as a control rod containing such a blocking element, which would allow assembly even in conditions of limited access. Preferably, the blocking element or control rod containing such a blocking element allows easy use, i. could be easily opened and closed in both inversely limited spatial conditions, and that this did not require blocking elements or control rods of two different types. Furthermore, it is preferable that this blocking element provides a reliable releasable blocking of the rotational movement of the adapter relative to the body, and that such blocking is carried out in a simple and reliable manner.

This problem is solved by means of a locking element according to the invention, wherein the snap action element is rotatably connected to the lever arm.

Thus, the direction of the snap-action element can be changed, in which the arm of the lever must be rotated after insertion of the finger into the control rod adapter, in order to provide a removable locking of the rotational movement of the adapter relative to the control rod housing. The assembly with restricted access is greatly improved in this case.

When assembled, on the control rod (on the body and/or adapter), the latch element engages with the control rod, as the case may be, by interacting (by counter pressure) with the locking device and/or lever arm. The locking device is designed to releasably lock the rotational movement of the adapter relative to the housing, in particular by interacting with or engaging with the counter element of the control rod. Preferably, the snap action element is designed such that, when assembled on the control rod, it presses the control rod against the locking device. The lever arm may, for example, be in the form of a plate. Preferably, the pin is located near one of the ends of the lever arm. Preferably, the latch action element is located on the same side of the lever arm as the pin and/or locking device. Preferably, the snap action element can be rotated through at least 180°. Preferably, however, the locking element is designed to prevent a full 360° rotation of the snap action element. Preferably, the latch action element may be located on the section of the lever arm protruding in the direction of the finger. The latch action element may comprise a locking device. The snap action element and the locking device are arranged at a distance from each other, in particular by means of a pin in the direction of the longitudinal extension of the lever arm.

The assembled state is understood to mean the state in which the pin of the blocking element is inserted into the control rod adapter and the snap action element is latched into or locked with the control rod. In this case, the lever arm, in particular, runs along the control rod or parallel to it. By releasable locking is meant in particular that the locking device, preferably together with the snap action element, counteracts the rotational movement of the adapter relative to the housing in the assembled state and thus prevents unwanted rotation of the adapter relative to the housing, and therefore prevents undesirable change in the length of the rod. management. There may be a plurality of rotational positions of the adapter relative to the housing, in which the specified effect can be achieved. In particular, rotational movement in the assembled state can be prevented (without destroying the locking element or other components of the control rod). In such a case, to change the length of the control rod, the lever arm with the latch action element must be folded away from the control rod, and then folded back against the control rod to lock. In addition, the rotational position in the assembled state can be influenced to be removably locked with a predetermined blocking force in a plurality of rotational positions. In such a case, the adapter can also be rotated in the assembled state relative to the housing by applying sufficient torque.

The snap-action element of the blocking element comprises in particular a recess enabling it to wrap around the control rod. Preferably, the latch action element is resilient so that the control rod can be inserted into the recess. Preferably, the latching action member has an upwardly folded end to facilitate the flexing of the latching member in an appropriate resilient manner so that it can snap into place and snap onto the control rod. In addition, it can be designed so that after the insertion of the pin, the elastic bending of the snap-action element is carried out automatically upon subsequent rotation of the arm of the lever, since the said snap-action element is pressed in the corresponding direction due to the action of the housing and/or adapter on the upwardly bent end. After entering the recess, the snap-action element snaps into place and locks into place.

The blocking element does not include an adapter and a control rod housing, but is designed to interact with the control rod housing. In order to define a locking element without reference to a specific housing and/or control rod adapter, a latching action element is preferably understood to mean any device that can snap into place on any rod (in the particular case, by interaction with a lever arm or fixing device).

The snap action element may be designed to be located on the housing and/or control rod adapter when assembled. Preferably, the snap action element comprises a partial ring, which is preferably designed to be placed on the adapter or control rod housing in a locked (assembled) position. Since the control rod adapter usually fits inside and is threaded to the housing, it has a smaller diameter. Therefore, it is preferable that the snap-action element in the assembled position is located on the adapter, since it should have a smaller extent, which helps to simplify assembly in restricted access conditions. Alternatively or additionally, the latch action element may be angled. In particular, a straight lamellar part can adjoin the partial ring. The snap action element, namely the partial ring, can also be placed on the housing in the assembled position. This is advantageous in particular in the case of reduced length embodiments, in particular shortened control rods, since in this case there may be too little space to securely snap the latch action element into place.

Preferably, the snap action element is rotatably connected to the arm of the lever so that the snap action element can assume at least first and second rotational positions, wherein the opening for the snap action element in the first rotational position faces at least in a direction perpendicular to the direction of the longitudinal extension. finger and perpendicular to the direction of the longitudinal extent of the arm of the lever, and in the second rotational position is oriented with an angle of 180° relative to the first rotational position. Thus, especially when the finger is inserted into the adapter from the same direction, the locking can be done by turning the lever arm in both directions, depending on the rotational position.

In addition, assembly in restricted access conditions is simplified if the latch action element can be rotated with a lever arm about an axis of rotation running parallel to the pin.

Preferably, the locking element and the snap action element are spaced from each other in the direction of the longitudinal extension of the lever arm. Preferably, the snap action element is located closer to the finger than the locking device. By separating the two functions of the latching element and the locking device, the connection of the latching element to the lever arm in a rotatable manner can be structurally simplified. In addition, the stability and reliability of the fixing device can be improved.

Preferably, the snap action element and the locking device together cover an angular range of more than 180° relative to the male control rod. This means that the snap action element and the locking device together form at least one recess (in the direction of rotation of the lever arm, i.e. perpendicular to the lever arm and the pin). This ensures a particularly secure connection. The latch action device does not have to be capable of performing the latch function automatically, but may be designed so that the latch function is performed only in conjunction with the lever arm and/or the locking device.

Preferably, the locking device comprises at least one blocking raised edge. It can interact, for example, with the gear rim of the control rod housing in the assembled state or engage with this rim and snap onto it. The at least one blocking raised edge preferably has a constant cross section in the direction of the longitudinal extension of the lever arm. The cross section of the blocking raised edge preferably has a rounded shape, so that when sufficient torque is applied, rotational movement of the adapter relative to the housing in the assembled state is possible. The at least one locking raised edge can also be snapped onto the housing or adapter in conjunction with the snap action element. The locking device must be designed so that it can interact with the body to prevent or limit the rotational movement of the adapter relative to the body.

In particular, secure (removable) locking can be ensured if the locking device comprises two locking raised edges. Preferably, these interlocking raised edges are designed to engage with the ring gear of the control rod housing. In particular, it is preferable that they are designed so as to engage with non-adjacent recesses of the gear rim. Preferably, the two blocking protruding edges are located at a distance from each other, at least at a distance equal to half the maximum width of the arm of the lever in the region of the locking device. The presence of two blocking protruding edges provides a more secure holding of the blocking element in the locked position.

Preferably, the snap-action element is connected to the lever arm by means of a swivel joint. In particular, it is preferable that the snap-action element in the assembled state rests on an area on one half of the housing and/or adapter, and the locking device interacts with the housing or counter-element of the housing in the area opposite this half of the housing, or that the snap-action element is made corresponding way. In this way, contact of the swivel with the housing or control rod adapter can be avoided.

Preferably, the latch action element comprises a plate supported on the lever arm. In this way, stability can be increased or insufficient stability can be eliminated, which can occur with a two-piece design of the lever arm and the snap action element. Preferably, the aforementioned plate rests on the plate portion of the lever arm. This ensures a reliable transmission of forces between the lever arm and the snap action element.

The object of the invention is also the aforementioned control rod with an adapter and a housing, containing the blocking element described above. The snap-action element can rotate in a provisional position (ie, in an unassembled position). The advantages achieved with such a control rod have been indicated above in the description of the blocking element.

Preferably, the control rod includes two adapters, each of which fits into one of the two ends of the housing. Preferably, the control rod includes a counter element that can interact with the locking device, or which can be engaged with the locking device. Preferably, this makes it possible to create a shape-matching connection with a removable interlock. Alternatively or additionally, there may be a friction-locked connection. In this case, there is no need for a counter element.

Preferably, the design includes a resilient element that presses the body threads against the threads of the adapter, thereby increasing the stability of the connection. It also ensures that unwanted noise is eliminated. Preferably, the length of the locking device in the direction of the longitudinal extension of the control rod is greater than the width of the counter element (in the assembled state).

Preferably, the latch action element in the provisional position can be rotated about an axis of rotation running perpendicular to the direction of the longitudinal extension of the control rod in the assembled state of the blocking element. The pre-position is the position in which the lever arm is not folded over the body or adapter and the snap-action element is thus not latched onto the adapter.

In a preferred embodiment, the housing comprises a ring gear with which at least one blocking raised edge of the locking device can engage. Thus, the ring gear performs the function of a counter-element. With the help of a ring gear, a removable blocking of the rotational movement of the adapter relative to the housing in a variety of rotational positions is possible.

Preferably, the length of the locking device in the direction of the longitudinal extension of the control rod is greater than the width of the ring gear. This simplifies the production process. Preferably, the locking device, in particular the at least one blocking protruding edge, has a width in the direction of the longitudinal extension of the control rod, which is greater than the distance by which the length of the control rod can be changed during adjustment. This ensures that the locking device can engage with the ring gear with any change in the length of the control rod when it is adjusted. If the locking device is provided on the snap action element and/or they are made in one piece, it is preferable that the locking device (in particular the blocking raised edge) and the snap action element (in particular the partial ring) have a width in the direction of the longitudinal extension of the control rod (in the assembled position) is greater than the distance that the length of the control rod can change during the adjustment process.

Preferably, the snap action element partially surrounds the adapter in the assembled state of the locking element. On the one hand, assembly in restricted access conditions can be simplified as a result of this, since the dimensions of the snap action element can be reduced. In addition, stability can be improved by a more compact design. Thus, for example, when there is a ring gear on the housing, the snap action element need not be supported by the ring gear, but may be supported by the tubular section of the adapter.

In a preferred embodiment, the adapter comprises a cylindrical side surface, the length of which in the direction of the longitudinal extension of the control rod corresponds to at least the length of the snap-in element or in particular the width of the partial ring of the snap-in element. This ensures an increase in the reliability of the latch.

Around the section or on the edge side of the housing section and/or the adapter there may be restrictive elements, for example one or more projections, against which the snap action element abuts in the assembled state. They can increase stability, in particular with respect to the ability of the snap action element to rotate.

Preferably, the snap action element is made of spring steel. This achieves an increase in stability, in particular, even after repeated elastic deformation. The lever arm and/or the locking device may be made of spring steel.

The invention will become more clear after reading the following preferred embodiments of the blocking element and control rod, described with reference to the drawings.

In FIG. 1a shows a blocking element according to a preferred embodiment of the invention, viewed obliquely from behind;

in fig. 1b is the blocking element shown in FIG. 1a, oblique front view;

in fig. 1c is the blocking element shown in FIG. 1a with the latching element rotated through a small angle;

in fig. 1d is the blocking element shown in FIG. 1a with the snap-action element rotated through 180°;

in fig. 2a is the blocking element shown in FIG. 1a, sectional view;

in fig. 2b is the blocking element shown in FIG. 1a, sectional view;

in fig. 2c is the blocking element shown in FIG. 1a in the position shown in FIG. 1d, sectional view;

in fig. 2d is the blocking element shown in FIG. 1a in the position shown in FIG. 1d, sectional view;

in fig. 3a is the blocking element shown in FIG. 1a in the position shown in FIG. 1d, front view;

in fig. 3b is the blocking element shown in FIG. 1a in the position shown in FIG. 1d, rear view;

in fig. 3c is the blocking element shown in FIG. 1a in the position shown in FIG. 1d, side view;

in fig. 3d is the blocking element shown in FIG. 1a, side view;

in fig. 4a shows a control rod according to a preferred embodiment of the invention with the blocking element shown in FIG. 1a, in the assembled state;

in fig. 4b is the control rod shown in FIG. 4a with the blocking element in a partially extended position;

in fig. 5a is the control rod shown in FIG. 4a, with the blocking element in a partially extended position, side view;

in fig. 5b is the control rod shown in FIG. 4a, with the blocking element in the unfolded position, side view;

in fig. 6a is the control rod shown in FIG. 4a, with the blocking element in the assembled position, side view;

in fig. 6b is the control rod shown in FIG. 4a, with the blocking element in the assembled position, side view from the other side;

in fig. 6c is the control rod shown in FIG. 6b is a sectional view;

in fig. 6d is the control rod in the position as in FIG. 6a, with the blocking element in the assembled position, side view from the other side;

in fig. 6e - control rod in the position as in FIG. 6b, with the blocking element in the assembled position, side view from the other side;

in fig. 7a is a sectional view with the blocking device shown in FIG. 6e;

in fig. 7b is a sectional view as in FIG. 6e shows the axis of rotation of the latch action element;

in fig. 7c is a sectional view as in FIG. 7b away from the axis of rotation of the snap-action element;

in fig. 7d is the control rod shown in FIG. 6e, side view;

in fig. 8a is a blocking element according to another preferred embodiment of the invention, oblique front view;

in fig. 8b is the blocking element shown in FIG. 8a with the snap-action element rotated through 180°;

in fig. 9a is the blocking element shown in FIG. 8a front view;

in fig. 9b is the blocking element shown in FIG. 8a, side view;

in fig. 10a is the blocking element shown in FIG. 8a, transverse view;

in fig. 10b is the blocking element shown in FIG. 8a is a sectional view along plane C-C in FIG. 9a;

in fig. 11a shows a control rod according to another preferred embodiment of the invention with the blocking element shown in FIG. 8a, before assembly;

in fig. 11b is the control rod shown in FIG. 11a with the blocking element in the assembled position;

in fig. 12a is the control rod shown in FIG. 11a with the blocking element in the assembled position;

in fig. 12b is the control rod shown in FIG. 11a is a sectional view along plane A-A in FIG. 12a;

in fig. 13 is the control rod shown in FIG. 11a is a sectional view along plane B-B in FIG. 12b;

in fig. 14a is a blocking element according to another preferred embodiment of the invention, oblique front view;

in fig. 14b is the blocking element shown in FIG. 14a with the snap-action element rotated through 180°;

in fig. 15a is the blocking element shown in FIG. 14a front view;

in fig. 15b is the blocking element shown in FIG. 14a side view;

in fig. 16a is the blocking element shown in FIG. 14a, transverse view;

in fig. 16b is the blocking element shown in FIG. 14a is a sectional view along plane C-C in FIG. 15a;

in fig. 17a shows a control rod according to another preferred embodiment of the invention with the blocking element shown in FIG. 14a, before assembly;

in fig. 17b is the control rod shown in FIG. 17a with the blocking element in the assembled position;

in fig. 18a is the control rod shown in FIG. 17a, side view, with the blocking element in the assembled position;

in fig. 18b is the control rod shown in FIG. 17a is a sectional view along plane A-A in FIG. 18a; and

in fig. 19 is the control rod shown in FIG. 17a is a sectional view along plane B-B in FIG. 18b.

In FIG. 1a - 1d, 2a - 2d and 3a - 3d, a preferred embodiment of the same blocking element 1 for the removable blocking of the adapter 3 relative to the housing 4 of the control rod 2 is explained (see, for example, Figs. 4a and 4b). In FIG. 1a - 1d the blocking element 1 is shown in oblique view, in FIG. 2a and 2c are cross-sectional views, in Figs. 2b and 2d are sectional views, and in FIG. 3a - 3d - top view from front, back and side on both sides.

The blocking element 1 comprises a lever arm 5 and a pin 6 connected to the lever arm 5. In addition, the blocking element 1 includes a latch element 7 and a locking device 8. The latch element 7 is connected to the arm 5 of the lever with the possibility of rotation around the rotation axis B. The axis of rotation B runs parallel to the direction A of the longitudinal extension of the pin 6. The snap action element 7 comprises a partial ring 9 which is located in the locked position on the adapter 3 of the control rod 2 (see, for example, FIGS. 4a, 7b and 7c). The locking device 8 is connected to the arm 5 of the lever.

The latch element 7 is rotatably connected to the arm 5 of the lever so that the latch element 7 can assume at least first and second rotational positions, wherein the latch opening of the latch element 7 in the first rotational position faces at least in a direction perpendicular to direction A of the longitudinal extension of the pin 6 and perpendicular to the direction X of the longitudinal extension of the arm 5 of the lever, and in the second rotational position is oriented with an angle of 180° relative to the first rotational position. In FIG. 1a, 1b, 2a, 2b and 3d the snap action element 7 is shown in a first rotational position, and in FIG. 1d, 2c, 2d and 3a the snap action element 7 is shown in a second rotational position. In FIG. 1c shows a transitional rotational position in which the snap action element 7 is only rotated through a small angle relative to the rotational axis B. As can be seen from the drawings, the snap action element 7 is connected to the arm 5 of the lever with the possibility of rotation around the axis of rotation B, running parallel to the pin 6. The longitudinal axis of the pin 6 is designated as axis A.

In this embodiment, the locking device 8 is located at a distance from the snap action element 7 in the direction X of the longitudinal extension of the arm 5 of the lever. More specifically, the locking device 8 is located farther from the pin 6 on the lever arm 5 than the latch action element 7 . It is also possible that the locking device 8 and the snap action element 7 are not separated from each other by a distance. For example, the latch element 7 may include a locking device 8. Thus, the latch device 8 can rotate together with the latch element 7.

The snap action element 7 and the locking device 8 have together, with respect to the male control rod 2, an angle range α of more than 180°. As the central point for calculating the range of the angle α, a rod with a cylindrical side surface in sections is selected, and the cylindrical side surface takes on the maximum possible diameter in each case in the area of the locking device 8 and the snap-action element 7, and the central points of the cylindrical side surface remain unchanged. The angle range α is based on the maximum spanned angle range, even if spanning occurs at different depths in the X direction of the longitudinal extent of the arm 5 of the lever.

In the embodiment under consideration, the locking device 8 comprises two locking protruding edges 10, 11. The latch element 7 is rotatably connected to the lever arm 5 by means of a swivel joint 12. The latch element 7 comprises a plate 13 which rests on the plate section of the lever arm 5 .

In FIG. 4a, 4b, 5a, 5b, 6a-6e and 7a-7d show a preferred embodiment of a control rod 2 with a blocking element 1 shown in FIG. 1 - 3d. In FIG. 4a and 6a to 7d show the blocking element 1 in an assembled state, in which rotational movement of the adapter 3 is prevented (ie blocked) relative to the housing 4 of the control rod 2. As shown in FIG. 4b, 5a and 5b, the blocking element 1 or arm 5 of the lever is folded away from the housing 4 or the adapter 3 of the control rod 2. In this preliminary position, the adapter 3 can be rotated relative to the housing 4 and thus the length of the control rod 2 can be changed. In this preliminary position, the pin 6 does not have to be inserted into the adapter 3. The snap action element 7 in the preliminary position can be rotated about the axis of rotation B, which runs perpendicular to the direction Y of the longitudinal extension of the control rod 2 in the assembled state of the locking element 1.

In FIG. 4a and 4b show the control rod 2 in oblique view, FIG. 5a, 5b, 6a, 6b show control rod 2 in a view from one side, in FIG. 6b and 6e show the control rod 2 seen from the other side, in FIG. 6c is a sectional view of the control rod 2 along the same side as in FIG. 6b and in FIG. 7a to 7d are sectional views along a plane perpendicular to the Y direction of the longitudinal extent of the control rod 2.

The control rod 2 includes a second adapter partly located inside the housing 4 at its second end. In the considered embodiment, the second adapter is not blocked relative to the housing 4 by the blocking element 1, however, the possibility of such blocking certainly exists.

The adapter 3 includes a cylindrical section 15 and a fork-shaped end section 16. Most of the cylindrical section 15 is located inside the body 4. The cylindrical section 15 contains a thread made on its outer side surface, which interacts with a thread made on the inner side surface of the body 4 (not shown ). The adapter 3 includes two lugs 17 in the cylindrical section 15, through which the pin 6 passes. In addition, the adapter 3 includes a restrictive element 18 located on the cylindrical section 15, made in the form of a circumferential protrusion. In the assembled state, the snap action element 7, namely the partial ring 9 of the snap action element, rests on the cylindrical section 15 of the adapter 3 between the stop element 18 and the fork-shaped end section 16, thus partially enclosing the adapter 3. In this case, the longitudinal extension (pure) cylindrical side surface of the adapter 3 in the Y direction, the longitudinal extension of the control rod 2 2 coincides with at least the longitudinal extension of the snap action element 7 .

The body 4 contains a gear rim 14 located on the end section of its cylindrical side surface and designed to engage with two blocking protruding edges 10, 11 of the locking device 8, and engage with two blocking protruding edges 10, 11 in the assembled position. To ensure the possibility of interaction of the locking device 8 with the counter-element of the control rod 2 (namely, the ring gear 14 of the body 4), even when the length of the control rod 2 changes, at least one of the two blocking protruding edges must have a corresponding extension in the Y direction of the longitudinal extension of the control rod 2 . In this embodiment, the two blocking protruding edges 10, 11 of the locking device 8 are made longer in the Y direction of the longitudinal extent of the control rod 2 than the width b of the ring gear 14. Thus, the width b of the structurally more complex ring gear 14 can be reduced, while while the blocking protruding edges 10, 11, which are easier to manufacture, have the necessary longitudinal extent.

The snap action element 7, namely the partial ring 9, can be made of spring steel, for example.

The assembly of the control rod 2 or blocking element 1 is carried out as follows. First, by rotating the adapter 3 relative to the housing 4, the required length of the control rod 2 is adjusted. Then the snap-action element 7 is turned to the required rotational position and the pin 6 is inserted into the lugs 13 of the adapter 3. After that, the lever arm 5 is turned so that the snap-action element 7 snaps into place on the control rod 2, in particular on the adapter 3. Now the locking device 8 engages with the ring gear 14 of the housing 4 of the control rod 2.

In FIG. 8a, 8b, 9a, 9b, 10a and 10b illustrate another preferred embodiment of the same locking element 1 for removably locking the adapter 3 relative to the housing 4 of the control rod 2 (as shown, for example, in FIGS. 11a and 11b). In FIG. 8a and 8b show the blocking element 1 in oblique view, FIG. 9a and 9b are top front and side views, FIG. 10a in cross-sectional view, and in FIG. 10b is a sectional view along plane C-C in FIG. 9a.

The blocking element in the embodiment shown in FIG. 8a-10b generally function in the same way as the blocking element in the embodiment described above and shown in FIG. 1a-3d. Therefore, in order to avoid repetition, functionally identical elements are designated by the same reference numerals, and in this regard, reference is made to the above description.

The obvious difference between the embodiment shown in FIG. 8a-10b and the embodiment shown in FIG. 1a to 3d is that the latch action element 7 and the locking device 8 are made in the form of one piece, or, as it can be said, the latch action element 7 comprises a locking device 8. Thus, like the latch action element 7, the locking device 8 is also rotatably connected to the arm 5 of the lever. The snap-action element 7 and the locking device 8 are connected to the arm 5 of the lever with the possibility of rotation around the rotation axis B so that the snap-action element 7 and the locking device 8 can be inserted into at least the first and second rotational positions, and the opening for snapping the snap-in element 7 action in the first rotational position is directed at least in the direction perpendicular to the direction A of the longitudinal extension of the pin 6 and perpendicular to the direction X of the longitudinal extension of the shoulder 5 of the lever, and in the second rotational position is oriented with a rotation of 180° relative to the first rotational position. As shown in FIG. 8b, the snap action element 7 and the locking device 8 are rotated by 180° with respect to the first rotational position. As shown in FIG. 8b, the snap action element 7 and the locking device 8 are rotated by 180° with respect to the first rotational position shown in FIG. 8a. Thus, by inserting the pin 6 in the same direction into the adapter 3, the adapter 3 can be removably locked against the housing 4 by turning the locking element 1 in one direction or the other (depending on the rotational position). Thus, it is possible to better adapt to the assembly conditions, and the assembly of the control rod 2 is simplified.

The snap action element 7 also includes a plate 13 which rests on the plate section of the arm 5 of the lever. The snap action element 7 is also in the form of a partial ring which, in the locking position, in contrast to the embodiment shown in FIG. 1a to 3d encloses the housing 4 of the control rod 2, in particular the ring gear 14 (as shown, for example, in FIG. 11b).

The locking device 8 comprises a blocking raised edge 10 located substantially opposite the partial ring 9. The blocking raised edge 10 has essentially the same width as the partial ring 9 (in the direction X of the longitudinal extent of the arm 5 of the lever, when the element 7 latch action is in the rotational position shown in Fig. 8a or Fig. 8b, i.e. when the blocking raised edge extends in the direction X of the longitudinal extension of the arm 5 of the lever).

In FIG. 11a, 11b, 12a, 12b and 13 show another preferred embodiment of the control rod 2 with the blocking element 1 described above and shown in FIG. 8a–10b. The adapter 3 and the housing 4 of the control rod 2 are of essentially the same construction as the similar elements of the control rod 2 shown in FIG. 4a–7d. Therefore, in order to avoid repetition, functionally identical elements are designated by the same reference numerals, and in this regard, reference is made to the above description.

In FIG. 11a shows the blocking element 1 before the insertion of the pin 6 into the lugs 17 of the adapter 3. In FIG. 11b - 13 show blocking element 1 in assembled position.

In FIG. 11a and 11b the control rod 2 is shown in oblique view, in FIG. 12a is a side view, in Fig. 12b is a sectional view along plane A-A in FIG. 12 and in FIG. 13 is a sectional view along plane B-B in FIG. 12b. As noted above with respect to FIG. 8a - 10b, the partial ring 9 of the snap action element 7 engages in the locking position with the housing 4 of the control rod 2. The partial ring 9 surrounds the ring gear 14 on the housing 4, pressing the blocking protruding edge 10, located essentially opposite the partial ring 9, to the ring gear 14. The width of the blocking protruding edge 10 and the partial ring 9 in the Y direction of the longitudinal extent of the control rod 2 ( in the assembled position) is greater than the distance over which the length of the control rod 2 can be changed by rotating the adapter 3 relative to the housing 4, i.e. for example, more than the length of the threads of the adapter 3 and body 4 that engage with each other.

In FIG. 14a-16b show another possible preferred embodiment of the blocking element 1. In each of FIGS. 14a-16b are views of the blocking element 1 corresponding to those shown in FIG. 8a–10b. The blocking element in the embodiment shown in FIG. 14a-16b generally function in the same way as the blocking element in the embodiment described above and shown in FIG. 8a–10b. Therefore, in order to avoid repetition, functionally identical elements are designated by the same reference numerals, and in this regard, reference is made to the above description.

This embodiment is different from the embodiment shown in FIG. 8a - 10b, only in that the locking device 8 contains a second blocking protruding edge, and also in that the partial ring 9 contains a narrowed part 19. The second blocking protruding edge 11 is located on the partial ring 9 opposite the first blocking edge 10 relative to the center of the fixed rod 2 control (see Fig. 16b and 19) and, thus, in the assembled position engages with the gear rim 14 with an offset of essentially 180°. This improves the stability of the lock. On the tapered portion 19, the partial ring 9 has a reduced width.

In FIG. 17a-19 show another possible preferred embodiment of the control rod 2. On each of the FIGS. 17a to 19 show views of the blocking element 1 corresponding to those shown in FIG. 11a-13. The blocking element in the embodiment shown in FIG. 17a-19 generally function in the same way as the blocking element in the embodiment described above and shown in FIG. 11a-13. Therefore, in order to avoid repetition, functionally identical elements are designated by the same reference numerals, and reference is made to the above description in this regard. The embodiment shown in FIG. 17a - 19 differs from the variant shown in Figs. 11a - 13, only in that the blocking element 1 is made according to the variant shown in FIG. 14a-16b.

Claims (16)

1. Blocking element (1) for removable blocking of the adapter (3) relative to the body (4) of the control rod (2), containing the shoulder (5) of the lever and the pin (6) connected to the shoulder (5) of the lever, the element (7) of the latch action and a locking element (8), characterized in that the latch action element (7) is connected to the arm (5) of the lever with the possibility of rotation, and the element (7) of the latch action is connected to the arm (5) of the lever with the possibility of rotation around the axis (B ) rotation running parallel to the pin (6). 2. Blocking element (1) according to claim 1, characterized in that the snap-action element (7) contains a partial ring (9) designed to be placed on the adapter (3) and / or housing (4) of the control rod (2) in lock position. 3. Blocking element (1) according to claim 1 or 2, characterized in that the latch element (7) is rotatably connected to the arm (5) of the lever so that the latch element (7) is capable of receiving at least the first and the second rotational position, wherein the opening for snapping the snap action element (7) in the first rotational position is directed at least in the direction perpendicular to the direction (A) of the longitudinal extension of the pin (6) and perpendicular to the direction (X) of the longitudinal extension of the arm (5) of the lever, and in the second rotational position is oriented with rotation through an angle of 180° relative to the first rotational position. 4. Blocking element (1) according to any one of paragraphs. 1–3, characterized in that the locking device (8) is located at a distance from the element (7) of the snap action in the direction (X) of the longitudinal extension of the arm (5) of the lever. 5. Blocking element (1) according to any one of paragraphs. 1–4, characterized in that the latch action element (7) and the locking device (8) jointly cover the angle range (α) of more than 180° relative to the lockable control rod (2). 6. Blocking element (1) according to any one of paragraphs. 1-5, characterized in that the locking device (8) contains at least one blocking protruding edge (10, 11). 7. Blocking element (1) according to any one of paragraphs. 1-6, characterized in that the locking device (8) contains two blocking protruding edges (10, 11). 8. Blocking element (1) according to any one of paragraphs. 1–7, characterized in that the snap action element (7) is connected to the arm (5) of the lever by a swivel joint (12). 9. Blocking element (1) according to any one of paragraphs. 1–8, characterized in that the snap action element (7) contains a plate (13) resting on the arm (5) of the lever. 10. Rod (2) control with an adapter (3) and a housing (4), containing a blocking element (1) according to any one of paragraphs. 1–9. 11. The control rod (2) according to claim 10, characterized in that in the preliminary position the snap action element (7) is able to rotate around the rotation axis (B) passing perpendicular to the direction (Y) of the longitudinal extension of the control rod (2) when blocking element (1) is in the assembled state. 12. The control rod (2) according to claim 10 or 11, characterized in that the housing (4) contains a ring gear (14), with which at least one blocking protruding edge (10, 11) of the locking device ( eight). 13. The control rod (2) according to claim 12, characterized in that the length of the locking device (8) in the direction (Y) of the longitudinal extension of the control rod (2) is greater than the width (b) of the ring gear (14). 14. Thrust (2) control according to any one of paragraphs. 10-13, characterized in that the snap action element (7) in the assembled state of the blocking element (1) partially covers the adapter (3). 15. Thrust (2) control according to any one of paragraphs. 10-14, characterized in that the adapter (3) contains a cylindrical side surface, the longitudinal extent of which in the direction (Y) of the longitudinal extent of the control rod (2) corresponds to at least the longitudinal extent of the snap action element (7). 16. Thrust (2) control according to any one of paragraphs. 10–15, characterized in that the snap action element (7) is made of spring steel.

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