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 present invention relates to a positioning device according to the preamble of claim 1 of this patent.

Background Art

[0002] A positioning device of the above type is known from the document of German Patent Application Publication No. 10013874. In the specific case of this application, this positioning device has a rotatable clamping arm, and includes a housing, an actuator mounted to linearly move in the housing, a stopper provided on the actuator, and a check stopper that can be fixed to the housing and interacts with the stopper to limit the stroke length of the actuator. An insertion opening for the check stopper is provided in the housing. In this solution, the force introduced into the check stopper by the actuator via the stopper is introduced into the head piece or the housing via a movement limiter (reference numeral 82 in that document) and a cover plate (reference numeral 81 in that document), respectively.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention is based on the purpose of improving a positioning device of the above type. Specifically, it is to create a positioning device such that the force generated from the actuator is appropriately introduced into or dispersed in the housing.

Means for Solving the Problems

[0005] This objective is achieved by the above-described type of positioning device using the features described in the feature portion of claim 1 of this patent.

[0006] According to the present invention, as a result, the check stopper is provided to have two wedge elements that can be fixed into the insertion opening by being adjustable relative to each other.

[0007] In other words, the solution according to the present invention is characterized in that the combination of an insertion opening in the housing and two appropriately adjustable wedge elements forms a check stopper for a fastener positioned on the actuator as a solid assembly. This combination provides a fairly stable solution, which allows the check stopper to be adjusted fairly easily if necessary, as will be described in more detail below.

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

[0009] Positioning devices according to the present invention, including advantageous further developments as defined by the dependent claims of this patent, are described in more detail below based on a graphical representation of a preferred exemplary embodiment. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 2 shows a rear view along the cutting line AA, illustrating a cross-section of the positioning device according to the present invention. [Figure 2] The cross-sectional view shows the positioning device according to Figure 1. [Figure 3] Figure 1 shows a perspective view of the check stopper for the positioning device. [Figure 4] Figure 3 shows a side view of the check stopper. [Modes for carrying out the invention]

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

[0012] Preferably, this results in actuator 2 being configured to be driven by an electric motor, optionally pneumatically or hydraulically. This drive unit is shown at the bottom of Figures 1 and 2 in either case.

[0013] Furthermore, preferably, the fastener 2.1 is optionally formed to screw into the actuator 2 and / or to protrude conically from the actuator 2.

[0014] Geometrically, more preferably, the main vertical axis of the check stopper 1.1 is formed perpendicular to the main vertical axis of the actuator 2, but is offset laterally from there. Furthermore, additionally or alternatively, preferably, the main vertical axis of the fastener 2.1 is formed perpendicular to and intersects the main vertical axis of the actuator 2.

[0015] Here, the check stopper 1.1 is important for a solution according to the present invention, having two wedge elements 1.1.1, 1.1.2 that can be fixed to the insertion opening 1.2 by being adjustable relative to each other.

[0016] Therefore, a threaded element 1.1.3 is provided for connecting the two wedge elements 1.1.1 and 1.1.2. 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 threaded element 1.1.3 is provided in the other of the two wedge elements 1.1.2. Geometrically, this is how the threaded hole 1.1.1.1, the through hole 1.1.2.1, and the threaded element 1.1.3 are formed to share a common vertical axis.

[0017] As can be seen from the figure, preferably, taking all of these into consideration, the threaded hole 1.1.1.1 is located at the thicker end of the wedge element 1.1.1. More preferably, the threaded element holder 1.1.2.3, which has a through hole 1.1.2.1, is located at the thinner end of the wedge element 1.1.2.

[0018] In order to use so-called automatic locking (see also https: / / de.wikipedia.org / w / index.php?tile=Selbsthemmung&oldid=224834918), and more specifically referring to Figure 4, it is preferable that the friction surface 1.1.1.2 on one wedge element 1.1.1 interacts with the friction surface 1.1.2.2 on the other wedge element 1.1.2. Therefore, it is preferable that the friction surfaces 1.1.1.2,1.1.2.2 advance obliquely with respect to the longitudinal axis of the screw element 1.1.3.

[0019] More preferably, as can be seen particularly well from Figure 3, the check stopper 1.1 has a substantially cylindrical outer shape overall. Therefore, more preferably, the insertion opening 1.2 (in the housing 1) is formed as a cylindrical hole. In this regard, refer specifically to Figure 2. Therefore, several insertion openings 1.2 for the check stopper 1.1 are provided in the housing 1, more preferably.

[0020] As can be seen from FIGS. 1 and 2, the slot 1.3 extends with its longitudinal direction parallel to the main axis of the actuator 2, ensuring that the movement of the stopper 2.1 is not obstructed, and the slot 1.3 is further preferably provided in the housing 1. Therefore, the guide elements 1.4 that advance on both sides of the stopper 2.1 are preferably arranged in the slot 1.3. Therefore, this guide element 1.4 is preferably made of a material harder than the housing 1. For further improving stability, at least one through opening 1.4.1 for the check stopper 1.1 is further provided in the guide element 1.4.

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

[0022] Step 1: The pre-assembled check stopper 1.1 is inserted into the insertion opening 1.2 until it stops. However, as shown in FIG. 4, the screw element 1.1.3 is not yet screwed in sufficiently by that time.

[0023] Step 2: In order to establish a frictional connection 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 force to the screw element 1.1.3 (therefore, the circumferences of the check stopper 1.1 are each in an expanded state or expand). Therefore, force can be applied, for example, by hitting or pressing the screw element 1.1.3 with a hammer.

[0024] Step 3: The screw element 1.1.3 is preferably screwed into the screw hole 1.1.1.1 until it no longer protrudes from the insertion opening 1.2 in order to eliminate the outer shape where a collision can occur. Here, the check stopper 1.1 according to the present invention is fixed for use and thus is in a usable state.

[0025] Step 4: Now, if the positioning device adapts as part of the stroke length adjustment, the screw element 1.1.3 is screwed in further, thereby moving the wedge element 1.1.1 toward the screw element holder 1.1.2.3, and the frictional coupling between the friction surfaces 1.1.1.2 and 1.1.2.2 is released (therefore, the circumference of the check stopper 1.1 is again reduced).

[0026] Step 5: Finally, the check stopper 1.1 can be removed from the housing 1, for example, by pulling out the threaded element 1.1.3, or by 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 readjusted. [Explanation of Symbols]

[0027] 1 Housing 1.1 Check 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 hole 1.1.2.2 Friction surface 1.1.2.3 Screw element holder 1.1.3 Screw elements 1.2 Insertion opening 1.3 slots 1.4 Guide Elements 1.4.1 Through-opening 2 Actuators 2.1 Fasteners

Claims

1. A positioning device comprising a housing (1), an actuator (2) mounted on the housing (1) for linear motion, a stopper (2.1) provided on the actuator (2), and a check stopper (1.1) that can be fixed to the housing (1) and interacts with the stopper (2.1) to limit the stroke length of the actuator (2), wherein an insertion opening (1.2) for the check stopper (1.1) is provided in the housing (1). The positioning device is characterized in that the check stopper (1.1) has two wedge elements (1.1.1, 1.1.2) that can be adjusted relative to each other and fixed to the insertion opening (1.2).

2. The 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. The positioning device according to claim 2, characterized in that a screw 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. The positioning device according to claim 3, characterized in that the screw 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 vertical axis.

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

6. The positioning device according to claim 3 or 4, characterized in that the screw element holder (1.1.2.2) provided with the through hole (1.1.2.1) is positioned at the thin end of the wedge element (1.1.2).

7. The positioning device according to claim 4, characterized in that the friction surface (1.1.1.2) provided on one of the wedge elements (1.1.1) is formed to interact with the friction surface (1.1.2.2) provided on the other wedge element (1.1.2).

8. The positioning device according to claim 7, characterized in that the friction surfaces (1.1.1.2, 1.1.2.2) are formed to advance obliquely with respect to the common vertical axis of the screw element (1.1.3).

9. The positioning device according to any one of claims 1 to 4, 7, or 8, characterized in that the check stopper (1.1) has a substantially cylindrical outer surface shape as a whole.

10. The positioning device according to any one of claims 1 to 4, 7, or 8, characterized in that the insertion opening (1.2) is formed as a cylindrical hole.

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