Positioning device

Abstract

The 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 counter-stop (1.1) that can be fixed in the housing (1) and interacts with the stop (2.1) to limit the stroke length of the actuator (2), wherein an insert opening (1.2) for the counter-stop (1.1) is provided in the housing (1). According to the invention, the counter-stop (1.1) has two wedge elements (1.1.1, 1.1.2) that can be adjusted relative to each other and can thereby be fixed in the insert opening (1.2).

Description

[0001] Positioning device

[0002] The invention relates to a positioning device according to the preamble of claim 1.

[0003] A positioning device of the type mentioned above is known from document DE 100 13 874 A1. This positioning device, which in this specific case supports a pivotable clamping arm, consists of a housing, an actuator mounted for linear movement in the housing, a stop provided on the actuator, and a counter-stop that can be fixed in the housing and cooperates with the stop to limit the stroke length of the actuator, wherein an insertion opening for the counter-stop is provided on the housing. In this solution, a force introduced by the actuator via the stop into the counter-stop is introduced into the head piece or housing via the travel limiter (see reference numeral 82 there) and the cover plate (see reference numeral 81 there). 20

[0004] The invention is based on the object of improving a positioning device of the type mentioned above. In particular, a positioning device is to be created in which a force coming from the actuator is better introduced into the housing 25 or diverted to it.

[0005] This object is achieved with a positioning device of the type mentioned at the outset by the features set out in the characterizing part of claim 1. 30 According to the invention, the counter-stop has two wedge elements which are adjustable relative to one another and can thus be fixed in the insertion opening.

[0006] In other words, the solution 5 according to the invention is characterized in that the combination of the insertion opening in the housing and the two wedge elements, which can be adjusted to suit the insertion opening, forms—as a solid assembly—the counter-stop for the stop arranged on the actuator. This combination results in a very stable solution 10 in which the counter-stop can also be adjusted very easily if necessary, which will be explained in more detail below.

[0007] Other advantageous developments of the positioning device according to the invention result from the dependent patent claims.

[0008] The positioning device according to the invention, including its advantageous developments according to the dependent patent claims, is explained in more detail below with reference to the drawing of a preferred embodiment.

[0009] It shows

[0010] 25

[0011] Figure 1 shows a section through the positioning device according to the invention in a rear view along the section line AA in Figure 2;

[0012] Figure 2 shows in section the positioning device according to Figure

[0013] 1 in a sectioned side view; 30

[0014] Figure 3 shows a perspective view of the counter-stop for the positioning device according to Figure 1; and Figure 4 shows a side view of the counter-stop according to Figure 3.

[0015] The positioning device shown in the figures consists, in a known manner, of a housing 1, an actuator 2 mounted linearly in the housing 1, a stop 2.1 provided on the actuator 2, and a counter-stop 1.1 that can be fixed in the housing 1 and cooperates with the stop 2.1 to limit the stroke length of the actuator 2, wherein an insertion opening 1.2 for the counter-stop 1.1 is provided on the housing 1. 10

[0016] It is preferably provided that the actuator 2 is optionally driven by an electric motor, pneumatically, or hydraulically; this drive is shown at the bottom of Figures 1 and 2. 15

[0017] Furthermore, it is preferably provided that the stop 2.1 is optionally screwed into the actuator 2 and / or is designed in a pin-shaped manner protruding from the actuator 2.

[0018] 20

[0019] Furthermore, from a geometric perspective, it is preferably provided that a main longitudinal axis of the counter-stop 1.1 is perpendicular to a main longitudinal axis of the actuator 2, but laterally offset from it. Furthermore, it is also or alternatively preferably provided that a main longitudinal axis of the stop 2.1 is perpendicular to a main longitudinal axis of the actuator 2 and intersects it.

[0020] Essential to the solution according to the invention is that the counter-stop 1.1 has two wedge elements 1.1.1, 1.1.2 that are adjustable relative to one another and can thus be fixed in the insertion opening 1.2. Furthermore, a screw element 1.1.3 is preferably provided for connecting the two wedge elements 1.1.1, 1.1.2.

[0021] In addition, preferably on one of the two wedge elements

[0022] 1.1.1 a threaded hole 1.1.1.1 and on the other of the two 5

[0023] A through-hole 1.1.2.1 is provided for the screw element 1.1.3 in the wedge elements 1.1.2. From a geometrical perspective, it is preferred that the threaded hole 1.1.1.1, the through-hole 1.1.2.1, and the screw element 1.1.3 share a common longitudinal axis. 10

[0024] As can be seen from the figures, it is preferably provided that the threaded bore 1.1.1.1 is arranged at a thicker end of the wedge element 1.1.1. Furthermore, it is preferably provided that at a thinner end of the wedge element 15

[0025] 1.1.2 a screw element holder 1.1.2.3 provided with the through hole 1.1.2.1 is arranged.

[0026] To utilize the so-called self-locking (see also https: / / de.wikipedia.org / w / index.php?title=Selbsthemmung&ol-20did=224834918), it is furthermore preferably provided, and in particular with reference to Figure 4, that a friction surface 1.1.1.2 provided on one wedge element 1.1.1 is designed to interact with a friction surface 1.1.2.2 provided on the other wedge element 1.1.2. It is furthermore preferably provided that the friction surfaces 1.1.1.2, 1.1.2.2 are designed to extend obliquely to the longitudinal axis of the screw element 1.1.3.

[0027] Furthermore, as can be seen particularly clearly in Figure 3, it is preferably provided that the counter-stop 1.1 has an approximately cylindrical outer contour. Accordingly, it is also preferably provided that the insertion opening 1.2 (on the housing 1) is designed as a cylindrical bore, see in particular Figure 2. Furthermore, several insertion openings 1.2 for the counter-stop 1.1 are preferably provided on the housing 1.

[0028] 5

[0029] As can be seen from Figures 1 and 2, a slot 1.3 is preferably provided on the housing 1, the longitudinal extent of which runs parallel to a main axis of the actuator 2 and ensures unhindered movement of the stop 2.1. A guide element 1.4 extending on both sides of the stop 2.1 is preferably arranged in the slot 1.3. This guide element 1.4 is preferably made of a harder material than the housing 1. Furthermore, to further increase stability, at least one through-opening 1.4.1 for the counter-stop 1.1 is preferably provided on the guide element 1.4.

[0030] The assembly or disassembly of the counter stop 1.1 according to the invention works as follows:

[0031] 20 Step 1: The pre-assembled counter-stop 1.1 is pushed into the insertion opening 1.2 until it stops. However, the screw element 1.1.3 is not yet screwed in as far as shown in Figure 4.

[0032] 25 Step 2: To create 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 (the circumference of the counter-stop 1.1 is thereby enlarged). The force can be applied, for example, by striking the screw element 1.1.3 with a hammer or with a press.

[0033] Step 3: To eliminate any potential interference, the screw element 1.1.3 is preferably screwed into the threaded bore 1.1.1.1 until it no longer protrudes from the insertion opening 1.2. The counter-stop 1.1 according to the invention is now fixed and ready for use.

[0034] Step 4: If the positioning device is to be adjusted as part of a stroke length adjustment, the screw element 1.1.3 is screwed in further, whereby the wedge element 1.1.1 moves in the direction of the screw element holder 1.1.2.3 and the frictional engagement between the friction surfaces 1.1.1.2, 1.1.2.2 is released (the circumference of the counter-stop 1.1 decreases again).

[0035] Step 5: Finally, the counter stop 1.1 can be removed or knocked out of the housing 1, for example by pulling on the screw element 1.1.3 or with a so-called punch (the additional opening on the housing 1 shown in Figure 1 is provided for this purpose) and readjusted if necessary.

[0036] List of reference symbols

[0037] 1 housing

[0038] 1 .1 Counter stop

[0039] 1 .1.1 Wedge element

[0040] 1 .1.1.1 Threaded hole

[0041] 1 .1.1.2 Friction surface

[0042] 1 .1.2 Wedge element

[0043] 1 .1.2.1 Through hole

[0044] 1 .1.2.2 Friction surface

[0045] 1 .1.2.3 Screw element holder

[0046] 1 .1.3 Screw element

[0047] 1 .2 Insertion opening

[0048] 1 .3 slot

[0049] 1 .4 Guide element

[0050] 1 .4.1 Passage opening

[0051] 2 actuator

[0052] 2 .1 Stop

Claims

Patent claims 1. Positioning device, comprising a housing (1), an actuator (2) mounted so as to be linearly movable in the housing (1), a stop (2.1) provided on the actuator (2) and a counter-stop (1.1) which can be fixed in the housing (1) and cooperates with the stop (2.1) to limit the stroke length of the actuator (2), wherein an insertion opening (1.2) for the counter-stop (1.1) is provided on the housing (1), characterized in that the counter-stop (1.1) has two wedge elements (1.1.1, 1.1.2) which are adjustable relative to one another and can thus be fixed in the insertion opening (1.2).

2. 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. Positioning device according to claim 2, characterized in that a threaded bore (1.1.1.1) is provided on one of the two wedge elements (1.1.1) and a through bore (1.1.2.1) for the screw element (1.1.3) is provided on the other of the two wedge elements (1.1.2). Positioning device according to claim 3, characterized in that the threaded bore (1.1.1.1), the through-bore (1.1.2.1), and the screw element (1.1.3) are designed to share a common longitudinal axis. Positioning device according to claim 3 or 4, characterized in that the threaded bore (1.1.1.1) is arranged at a thicker end of the wedge element (1.1.1). Positioning device according to one of claims 3 to 5, characterized in that a screw element holder (1.1.2.2) provided with the through-bore (1.1.2.1) is arranged at a thinner end of the wedge element (1.1.2). Positioning device according to one of claims 1 to 6, characterized in that a friction surface (1.1.1.2) provided on one wedge element (1.1.1) is designed to cooperate with a friction surface (1.1.2.2) provided on the other wedge element (1.1.2). Positioning device according to claims 2 and 7, characterized in that the friction surfaces (1.1.1.2, 1.1.2.2) are designed to run obliquely to the longitudinal axis of the screw element (1.1.3). Positioning device according to one of claims 1 to 8, characterized in that the counter-stop (1.1) has an approximately cylindrical outer contour. Positioning device according to one of claims 1 to 9, characterized in that the insertion opening (1.2) is designed as a cylindrical bore.

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