Positioning Device

Abstract

The present invention relates to a positioning device comprising a housing (1), an actuator (2) mounted for linear movement in the housing (1), a stop (2.1) provided on the actuator (2), and a non-return stop (1.1) that can be fixed to the housing (1) and that interacts with the stop (2.1) to limit the stroke length of the actuator (2), an insertion opening (1.2) for the non-return stop (1.1) being provided in the housing (1). According to the invention, the non-return stop (1.1) has two wedge elements (1.1.1, 1.1.2) that can be adjusted relative to each other and thereby fixed in the insertion opening (1.2).

Description

[Technical Field]

[0001] The invention relates to a positioning device according to the preamble of claim 1 of the present patent. [Background technology]

[0002] A positioning device of the above-mentioned type is known from document DE 100 13 874 A1. This positioning device, in the present specific case, has a pivotable clamping arm and consists of a housing, an actuator mounted for linear movement in the housing, a stop provided on the actuator, and a non-return stop that can be fastened to the housing and interacts with the stop to limit the stroke length of the actuator, an insertion opening for the non-return stop being provided in the housing. In this solution, the force introduced by the actuator via the stop into the non-return stop by the actuator is introduced into the headpiece or the housing, respectively, via a travel limiter (reference number 82 in the document) and a cover plate (reference number 81 in the document). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] DE 10013874 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention is based on the object of improving positioning devices of the above-mentioned type, in particular to create a positioning device in which the forces arising from the actuator are appropriately introduced into or distributed across the housing, respectively. [Means for solving the problem]

[0005] This object is solved by a positioning device of the above-mentioned type by means of the features set out in the characterizing part of claim 1 of the present patent.

[0006] According to the invention, it is consequently provided that the non-return stop has two wedge elements which can be adjusted relative to one another and thereby fixed in the insertion opening.

[0007] In other words, as a result, the solution according to the invention is characterized in that the combination of the insertion opening of the housing and the two appropriately adjustable wedge elements forms a non-return stop for a stop arranged on the actuator as a solid assembly, which combination results in a fairly stable solution, as the non-return stop can also be adjusted fairly easily if necessary, as will be explained in more detail below.

[0008] Other advantageous further developments of the positioning device according to the invention result from the dependent claims of the present patent.

[0009] The positioning device according to the invention, including advantageous further developments according to the dependent claims of the present patent, is explained in more detail below on the basis of diagrammatic representations of preferred exemplary embodiments. [Brief explanation of the drawings]

[0010] [Figure 1] 3 is a rear view taken along section line AA of FIG. 2, showing a cross section of a positioning device according to the present invention. [Figure 2] 2 shows a cross section of the positioning device according to FIG. 1 in a cutaway side view. [Figure 3] 2 shows a non-return stopper of the positioning device according to FIG. 1 in a perspective view; [Figure 4] The non-return stopper according to FIG. 3 is shown in a side view. DETAILED DESCRIPTION OF THE INVENTION

[0011] First, the positioning device shown in the figure comprises a housing 1, an actuator 2 mounted for linear movement in the housing 1, a stop 2.1 provided on the actuator 2, and a non-return stop 1.1 that can be fixed to the housing 1 and interacts with the stop 2.1 to limit the stroke length of the actuator 2, and an insertion opening 1.2 for the non-return stop 1.1 is provided in the housing 1.

[0012] Preferably, this provides that the actuator 2 is configured to be driven by an electric motor, optionally pneumatic or hydraulic, this drive being in any case shown at the bottom of Figures 1 and 2.

[0013] Furthermore, it is preferably provided that the stop 2.1 is optionally formed so as to be screwed onto the actuator 2 and / or so as to protrude conically from the actuator 2.

[0014] From a geometrical point of view, it is furthermore provided that the main longitudinal axis of the non-return stop 1.1 is formed perpendicular to the main longitudinal axis of the actuator 2, but is laterally offset therefrom. Furthermore, additionally or alternatively, it is preferably provided that the main longitudinal axis of the stop 2.1 is formed perpendicular to the main longitudinal axis of the actuator 2, so as to intersect it.

[0015] Here, it is important for the solution according to the invention that the non-return stop 1.1 has two wedge elements 1.1.1, 1.1.2 which can be adjusted relative to one another and thereby fixed in the insertion opening 1.2.

[0016] Therefore, a threaded element 1.1.3 is further provided for connecting the two wedge elements 1.1.1, 1.1.2. The threaded hole 1.1.1.1 is provided in one of the two wedge elements 1.1.1, and the through hole 1.1.2.1 for the threaded element 1.1.3 is provided in the other of the two wedge elements 1.1.2. From a geometrical perspective, the threaded hole 1.1.1.1, the through hole 1.1.2.1 and the threaded element 1.1.3 are thereby formed to share a common longitudinal axis.

[0017] As can be seen from the figure, preferably, taking all this into consideration, it is provided that the screw hole 1.1.1.1 is arranged at the thicker end of the wedge element 1.1.1. Even more preferably, it is provided that the screw element holder 1.1.2.3, in which the through hole 1.1.2.1 is provided, is arranged at the thin end of the wedge element 1.1.2.

[0018] For the use of a so-called self-locking mechanism (see also https: / / de.wikipedia.org / w / index.php?tile=Selbsthemmung&oldid=224834918), and more particularly with reference to Figure 4, it is preferably provided that the friction surface 1.1.1.2 on one of the wedge elements 1.1.1 is configured to interact with a friction surface 1.1.2.2 on the other wedge element 1.1.2. It is therefore further preferred that the friction surfaces 1.1.1.2, 1.1.2.2 are configured to run obliquely relative to the longitudinal axis of the thread element 1.1.3.

[0019] More preferably, it is provided that the non-return stop 1.1 has an overall substantially cylindrical outer shape, as can be seen particularly well in Figure 3. It is therefore more preferably provided that the insertion openings 1.2 (in the housing 1) are formed as cylindrical holes. In this regard, see in particular Figure 2. Therefore, several insertion openings 1.2 for the non-return stop 1.1 are more preferably provided in the housing 1.

[0020] 1 and 2, the slot 1.3, whose longitudinal direction runs parallel to the main axis of the actuator 2 and ensures unhindered movement of the stop 2.1, is preferably further provided in the housing 1. Guide elements 1.4 running on either side of the stop 2.1 are therefore preferably arranged in the slot 1.3. This guide element 1.4 is therefore preferably made from a harder material than the housing 1. For further stability, at least one through-opening 1.4.1 for the non-return stop 1.1 is preferably further provided in the guide element 1.4.

[0021] Finally, the assembly or disassembly of the non-return stopper 1.1 according to the invention is carried out as follows, respectively.

[0022] Step 1: The pre-assembled non-return stopper 1.1 is inserted into the insertion opening 1.2 until it stops. However, as shown in Figure 4, the screw element 1.1.3 is not yet screwed in to a sufficient extent thereby.

[0023] Step 2: To establish a frictional bond between the friction surfaces 1.1.1.2, 1.1.2.2, one wedge element 1.1.1 is wedged with the other wedge element 1.1.2 by applying a force to the threaded element 1.1.3 (thus causing the circumference of the non-return stop 1.1 to become enlarged or to expand, respectively). Thus, the force can be applied, for example, by hammering or pressing against the threaded element 1.1.3.

[0024] Step 3: The threaded element 1.1.3 is screwed into the threaded hole 1.1.1.1 sufficiently far to eliminate any possible collision profiles, preferably until it no longer protrudes from the insertion opening 1.2. The non-return stopper 1.1 according to the invention is now secured for use and is thus ready for use.

[0025] Step 4: Now, if the positioning device is adapted as part of adjusting the stroke length, the screw element 1.1.3 is screwed in even further, whereby the wedge element 1.1.1 moves in the direction of the screw element holder 1.1.2.3 and the frictional connection between the friction surfaces 1.1.1.2, 1.1.2.2 is released (thereby again reducing the circumference of the non-return stopper 1.1).

[0026] Step 5: Finally, the non-return stopper 1.1 can be removed or impacted from the housing 1, for example by pulling out the screw element 1.1.3 or also using a so-called drift punch (an additional opening in the housing 1 is provided for this purpose, as can be seen in Figure 1), and, optionally, a readjustment can be carried out. [Explanation of symbols]

[0027] 1. Housing 1.1 Reverse stopper 1.1.1 Wedge element 1.1.1.1 Screw holes 1.1.1.2 Friction surface 1.1.2 Wedge element 1.1.2.1 Through holes 1.1.2.2 Friction surface 1.1.2.3 Threaded element holder 1.1.3 Thread elements 1.2 Insertion opening 1.3 Slots 1.4 Guide Elements 1.4.1 Through-holes 2 Actuators 2.1 Fasteners

Claims

1. A positioning device comprising a housing (1), an actuator (2) mounted for linear movement in the housing (1), a stop (2.1) on the actuator (2), and a non-return stop (1.1) fixable to the housing (1) and interacting with the stop (2.1) to limit the stroke length of the actuator (2), an insertion opening (1.2) for the non-return stop (1.1) being provided in the housing (1), A positioning device, characterized in that the non-return stop (1.1) comprises two wedge elements (1.1.1, 1.1.2) which can be adjusted relative to one another and thereby fixed in the insertion opening (1.2).

2. 2. A positioning device according to claim 1, characterized in that a screw element (1.1.3) is provided for connecting the two wedge elements (1.1.1, 1.1.2).

3. 3. The positioning device according to claim 2, characterized in that a threaded hole (1.1.1.1) is provided in one of the two wedge elements (1.1.1) and a through hole (1.1.2.1) for the screw element (1.1.3) is provided in the other of the two wedge elements (1.1.2).

4. 4. The positioning device according to claim 3, characterized in that the threaded hole (1.1.1.1), the through hole (1.1.2.1), and the screw element (1.1.3) are formed to share a common longitudinal axis.

5. 5. The positioning device according to claim 3 or 4, characterized in that the screw hole (1.1.1.1) is arranged in the thicker end of the wedge element (1.1.1).

6. Positioning device according to one of claims 3 to 5, characterized in that the screw element holder (1.1.2.2) in which the through hole (1.1.2.1) is provided is arranged at the thin end of the wedge element (1.1.2).

7. 7. The positioning device according to claim 1, wherein the friction surface (1.1.1.2) provided on one of the wedge elements (1.1.1) is configured to interact with the friction surface (1.1.2.2) provided on the other wedge element (1.1.2).

8. Positioning device according to one of claims 2 to 7, characterized in that the friction surface (1.1.1.2, 1.1.2.2) is formed so as to run obliquely relative to the longitudinal axis of the threaded element (1.1.3).

9. Positioning device according to one of claims 1 to 8, characterized in that the non-return stop (1.1) has an overall substantially cylindrical outer shape.

10. Positioning device according to one of the preceding claims, characterized in that the insertion opening (1.2) is formed as a cylindrical hole.

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