Linear drive device

Abstract

Linear drive device (100), comprising: a housing element (200) in which at least one actuating element (202) is arranged, a guide unit (300) which is coupled to the actuating element (202) and is guided linearly movable relative to the housing element (200) between two stroke end positions, a stroke limiting device (400) by means of which a first stroke end position and a second stroke end position of the guide unit (300) can be set, wherein the stroke limiting device (400) comprises a first stop (402) and a first counter-stop (302) for setting a limit of the first stroke end position as well as a second stop (404) and a second counter-stop (304) for setting a first limit of the second stroke end position, characterized in that the stroke limiting device (400) has a third stop (406) which is configured to set a second limit of the second stroke end position together with the first counter-stop (302).and the first counter-stop (302) is designed to hold a magnetic element (306).

Description

Technical field

[0001] The invention relates to a linear drive device with a housing element in which at least one actuating element is arranged. The linear drive device comprises a guide unit which is coupled to the actuating element and is guided linearly movable relative to the housing element between two stroke end positions. Furthermore, the linear drive device comprises a stroke limiting device by means of which a first stroke end position and a second stroke end position of the guide unit can be set, wherein the stroke limiting device comprises a first stop and a first counter-stop for setting a limit of the first stroke end position, and a second stop and a second counter-stop for setting a first limit of the second stroke end position. State of the art

[0002] The publication EP 0 868 965 B1 discloses a slide drive device comprising a base housing in which at least one actuating element capable of linear motion is arranged. A slide coupled to the actuating element is located on the outside of the base housing. Two stroke limiting devices allow for variable adjustment of the two end positions of the slide and each comprises an adjustable stop arranged on one part and a counter-stop arranged opposite it on the other part. One adjustable stop is located on the slide, and the other adjustable stop is located on the base housing. Both stops are provided at end regions of the slide and the base housing, respectively, that point in the same axial direction.

[0003] German patent application DE 10 2010 056 367 A1 discloses a linear actuator in which a sliding table is moved back and forth along the axial direction of a cylinder body by the supply of a pressurized fluid from fluid inlet / outlet ports. The linear actuator comprises the cylinder body, which is connected to the inlet / outlet ports and has a pair of cylinder chambers into which the pressurized fluid is introduced; the sliding table, which moves back and forth along the axial direction of the cylinder body; a cylinder mechanism with a pair of pistons that can slide along the cylinder chambers, wherein the sliding table is moved back and forth by the displacement of the pistons; and a guide mechanism for guiding the sliding table along the axial direction of the cylinder body, wherein the guide mechanism is attached to the cylinder body and has a flat guide block in which circulation passages are formed.through which a plurality of rolling elements roll and circulate, and a stopper mechanism which is arranged centrally at one end of the sliding table in its width direction perpendicular to an axial direction of the sliding table in order to regulate the reciprocating movement of the sliding table, wherein the stopper mechanism is moved together with the sliding table and strikes at one end of the sliding block.

[0004] German patent application DE 10 2005 015 216 B4 discloses a damping device for linear drives, with axially adjustable damping means arranged externally on the linear drive, which are operatively connected to at least one external stroke stop of the linear drive. The damping stroke is achieved by the damped extension of a piston rod, whereby the damping stroke is due to pneumatic damping, and the return stroke is achieved by a magnet integrated at the end face of the piston rod, which is held magnetically against the stop of the linear drive and carried along.

[0005] A problem with current technology is that adjusting stroke limiters or damping elements depends directly on the specific arrangement of the respective stroke limiter or damping element. In other words, the stroke limiters generally have to be adjusted from the very side of the linear actuator on which they are located. Consequently, a user of such linear actuators must base their selection on the intended use and, above all, on spatial constraints. For example, if spatial constraints require that both stroke end positions of the linear actuator be adjusted from one end face, then both stops of the stroke limiter must be located on that end face.This significantly limits the application possibilities of each linear actuator. Once a user has decided on a specific arrangement of a linear actuator, access to the stroke limiting device can no longer be changed.

[0006] The object of the invention is to create a linear drive device belonging to the aforementioned technical field, which overcomes the disadvantages of the prior art and enables a linear drive device with increased flexibility for the customer. Furthermore, the object of the invention is to create a linear drive which has a stroke limiting device whose adjustability, depending on customer requirements, is possible from one or two end faces of the linear drive device.

[0007] The solution to the problem is defined by the features of claim 1. According to the invention, the stroke limiting device has a third stop which is configured to set a second limit of the second stroke end position together with the first counter-stop.

[0008] By providing a third stop, which is designed to define a second limit for the second stroke end position together with the first counter-stop, a user of the linear drive device can choose from which end face of the linear drive to adjust the second stroke end position. They can thus adjust the second stroke end position from the same end face from which the first stroke end position is also adjustable. This can be particularly important, for example, in locations with limited space. Alternatively, it is possible to adjust the second stroke end position from the end face of the linear drive device opposite the end face used to adjust the first stroke end position. A further advantage arises with regard to the manufacture of a linear drive device according to the invention.It is no longer necessary to manufacture different components of the linear drive device for every possible customer requirement. Instead, it is possible to produce a smaller number of variants, thereby standardizing individual components and improving cost efficiency.

[0009] Linear actuators can be used as piston-cylinder units with or without a piston rod. The force generated at the piston by the driving pressure medium is transmitted via the piston rod, or an alternative drive element performing the same function, to a guide unit in the form of a slide within the linear actuator. The guide unit is movable along a housing. However, linear actuators of the type described here can also be powered by alternative drive energy sources, such as hydraulically or electromagnetically driven linear actuators. To limit the movement of the guide unit, stroke limiting devices such as stops or damping elements are regularly used. Such stroke limiting devices also serve to change or adjust the stroke of the guide unit.

[0010] A housing element typically serves as the receptacle for a piston-piston rod assembly. The driving fluid is introduced into the housing element via defined connections and drives the piston-piston rod assembly. Since the housing element usually has a greater mass than all other components of a linear actuator, it is typically used as a stationary component.

[0011] An actuating element typically comprises the piston-piston rod assembly, which is moved within the housing element by the driving pressure medium. The piston can be driven electrically or fluidically, particularly hydraulically or pneumatically.

[0012] The guide unit is slidably arranged between two stroke end positions on the housing element and connected to the connecting element. This connecting element enables the transfer of the motion element to the guide unit. The guide unit is usually designed like a slide and offers versatile connection options for the operation of the linear drive device.

[0013] A stroke limiting device can consist of a variety of means suitable for determining or even setting at least the two stroke end positions. The stroke limiting device can comprise individual components that interact with both the housing element and the guide unit. Alternatively, the stroke limiting device can also be integrated into the guide unit and the housing element. This is typically achieved using stops and corresponding counter-stops that meet when a specific stroke end position is reached, thus blocking further movement at that end position.

[0014] To further increase the flexibility of the linear drive device, the stroke limiting device features a fourth stop, which, together with the second counter-stop, is designed to set a second limit for the first stroke end position. This allows the user to freely choose which end position to adjust from which end face. For each individual stroke end position, either the first or second end face of the linear drive device can be selected. Manufacturing costs are also significantly reduced, as only a smaller number of variants need to be produced. This enables the standardization of individual components and thus improved cost efficiency.

[0015] According to an advantageous embodiment, at least the first stop, the second counter-stop, and the third stop are permanently connected to the housing element. This reduces both the manufacturing costs and the assembly effort of the linear drive device.

[0016] The linear actuator achieves further optimization of manufacturing costs and assembly effort by forming at least the first, second, and third stops as a single, integral component with the housing element. This offers the advantage, for example, that the one-piece design of the housing element reduces both manufacturing costs and assembly effort for the linear actuator. Additionally, the actual moving mass of the linear actuator is reduced, and less energy is required to move the guide unit. Furthermore, the accuracy and strength of the linear actuator are improved.

[0017] To allow for maximum flexibility in adapting the linear drive device to customer requirements, the first or second counter-stop is designed to accommodate a damping element. Alternatively, both the first and second counter-stops can be designed to accommodate a damping element.

[0018] To reduce the number of components and assembly effort of the linear actuator, the first and second counter stops are permanently connected to the guide unit. Further optimization of manufacturing costs and assembly effort is achieved by forming the first and second counter stops and the guide unit as a single, integral component.

[0019] According to a further advantageous embodiment, at least the first, second, and third stops are designed to accommodate a damping element. This realizes the particular technical advantage that the ability of all three stops to support a damping element does not necessarily mean that all stops of the linear actuator must support such a damping element. Instead, a user of the linear actuator can select only two stops to use for limiting the stroke end positions. By equipping only two stops with damping elements, the user selects the corresponding end face of the linear actuator for adjusting the respective damping element and thus limiting the respective stroke end position.

[0020] In a further embodiment, both each stop and each counter-stop of the linear drive device are designed to carry a damping element. This achieves maximum flexibility with regard to adapting the linear drive device to a specific purpose. Additionally, it is conceivable that each stop and a corresponding interacting counter-stop could each carry a damping element. Consequently, both damping elements come into direct contact to limit the stroke end position.

[0021] In a special additional embodiment, the fourth stop is designed to accommodate a damping element. This further increases the flexibility with regard to the arrangement and adjustment of damping elements.

[0022] To further tailor the linear actuator to customer needs, each damping element is adjustable to set a stroke end position. An adjustable damping element offers the technical advantage of allowing for gentler deceleration of the linear actuator's stroke end positions. Furthermore, adjusting the damping element enables simple adjustment or adaptation of the damping element at each stroke end position. This applies both to changes in the geometric shape of the stroke end position and to changes in the damping parameters of the damping element itself. Adjustments can be made using an Allen key, a screwdriver, or another suitable tool.

[0023] According to another preferred embodiment, the guide unit and the actuating element are connected via a connecting element. This connecting element establishes a force-fit connection between the actuating element and the guide unit. This allows the force generated within the housing element, which acts on the actuating element, to be transmitted directly to the guide unit via the connecting element. For example, the actuating element can be a piston located within a pneumatic cylinder. A piston rod transmits the movement caused by compressed air to the guide unit via the connecting element.

[0024] To allow for greater operational flexibility of the linear drive device, the connecting element is arranged on the end face of the linear drive device. Preferably, the connecting element is designed as a yoke plate. This offers additional advantages with regard to interfaces and connections during operation. For example, the connecting element can have additional grooves, threads, or other connection options.

[0025] To further reduce the number of components and the assembly effort for the linear actuator, the connecting element and the guide unit can be formed as a single, integrated component. This also offers the technical advantage of increased rigidity in the guide unit. This increased rigidity improves accuracy and reduces wear on the actuator and the entire linear actuator.

[0026] According to a particularly preferred embodiment, the connecting element comprises at least one opening for adjusting a damping element. This achieves, for example, the technical advantage that an end-face adjustment of the damping element is also possible through the connecting element. For example, an Allen key or a screwdriver can be inserted into the opening.

[0027] To further increase the flexibility of use of the linear drive device, the connecting element is designed to accommodate a damping element. This allows the connecting element to act as a stop, which interacts with the first or second counter-stop.

[0028] To achieve precise positioning of the guide unit relative to the housing element, the first counter-stop is designed to hold a magnetic element. Preferably, the magnetic element is located entirely within the first counter-stop. This eliminates the need to position the magnetic element laterally on the linear drive device. Consequently, additional components are eliminated, and the positioning of the magnetic element is particularly precise. Furthermore, by arranging the magnetic element entirely within the first counter-stop, it is protected against external influences and damage.

[0029] To enable position determination, the magnetic element must be detected by a sensor. The sensor is attached to the linear drive device, for example, using a sensor strip. To attach a sensor strip to the linear drive device, the housing element includes at least one groove for receiving the sensor strip. Alternatively, the sensor strip can also be attached to the housing element using a thread and a corresponding screw connection. For example, such a groove can be designed as a T-slot. If required, more than one groove – preferably two T-slots – can be arranged on the linear drive device. To enable the detection of reaching the first and second stroke end positions, the linear drive device has a sensor strip which includes sensor elements for detecting at least the first and second stroke end positions of the guide unit.Additionally, the sensor strip can also accommodate further sensor elements. These additional sensor elements offer the advantage that the position determination of the guide unit is not limited to the end positions of the stroke. Furthermore, intermediate positions of the guide unit can also be determined.

[0030] To optimize the space requirements of the linear actuator, the housing element and the guide unit define an installation space through the first and second stroke end positions, with the stroke limiting device located entirely within this space. This allows a user to position a first linear actuator directly next to a second linear actuator during operation without any mutual restrictions due to adjustments of the stroke end positions. This minimizes the space requirement without compromising full functionality. As a result, a larger number of linear actuator units can be accommodated within a predetermined space.

[0031] Further advantageous embodiments and combinations of features of the invention can be derived from the following detailed description and the entirety of the patent claims. List of characters

[0032] The drawings used to illustrate the exemplary embodiment show: Fig. 1 a perspective view of a linear drive device according to one embodiment, Fig. 2A a perspective view of a linear drive device according to a further embodiment, Fig. 2B a perspective view of a linear drive device according to a further embodiment, Fig. 2C a sectional view of a linear drive device according to a further embodiment, Fig. 3A a perspective view of a linear drive device according to a further embodiment, Fig. 3B a perspective view of a linear drive device according to a further embodiment, Fig. 3C a sectional view of a linear drive device according to a further embodiment, Fig. 4 a perspective view of a linear drive device according to a further embodiment, Fig. 5 a perspective schematic representation of a linear drive device according to one embodiment, and Fig. 6 a perspective view of a linear drive device according to an additional embodiment.

[0033] Basically, identical parts in the figures are marked with the same reference symbols.

[0034] The Fig. Figure 1 shows a perspective view of a linear drive device 100 according to one embodiment. The linear drive device 100 includes a housing element 200 , in which two actuating elements 202 are arranged in the form of pneumatic pistons. On the housing element 200 There is a sled-like guide unit 300 , which is connected to the actuating element202 is motion-coupled and relative to the housing element 200 It is guided linearly between two stroke end positions. On the top side of the guide unit 300 Several openings are arranged, which can be adapted to customer specifications. The linear drive device also includes... 100 a stroke limiting device 400 , which is located between the command unit 300 and the housing element 200 The stroke limiting device is located. 400 is designed to establish a first lifting end position and a second lifting end position of the control unit 300 to adjust. The stroke limiting device 400 includes an initial attack 402 and a first counterattack 302 . At the moment of the first attack 402 with the first counterattack 302 The first stroke end position is limited. Furthermore, the stroke limiting device includes... 400 a second attack404 and a second counterattack 304 The encounter of the second attack 404 and the second counterattack 304 The second stroke end position is limited. Additionally, the stroke limiting device includes... 400 a third attack 406 The third attack 406 and the first attack 402 define a distance between them within which the first counterattack takes place. 302 can move between two stroke end positions. Thus, the third stop 406 trained to deliver the first counterattack 302 to set a second limit of the second stroke end position. In other words, to set the second stroke end position, both the contact of the second stop and the contact of the second stop can be used. 404 with the second counterattack 304 as well as the encounter of the first counterattack 302 with the third attack 406 can be used.

[0035] Both the first attack 402 , the second counterattack 304 as well as the third attack 406 are designed to each contain a damping element 500 to carry. The second counterattack 304 is different from the first attack 402 and the third attack 406 not with the housing element 200 connected, but as a moving attack on the command unit 300 trained. The arrangement of a damping element 500 This offers advantages in terms of adjustability of the stroke end position. This is achieved by adjusting a damping element. 500 This allows for a particularly simple adjustment of the respective stroke end position. In conjunction with the previously mentioned adjustment of the second stroke end position, this means that a user of the linear drive device 100 about the arrangement of the damping elements 500at the corresponding stops, the side of the access for adjustment to the linear drive device 100 can be selected. Using the second stroke end position as an example, this means that, on the one hand, there is the possibility of selecting the second stroke end position by arranging a damping element. 500 on the second counterattack 304 This results in an adjustment or fine-tuning of the second stroke end position – by adjusting the damping element. 500 - from one end face of the linear drive device 100 from which the connecting element 320 is arranged opposite each other. On the other hand, it is possible to determine the second stroke end position by arranging the damping element at the third stop. 406 to achieve this. Consequently, an adjustment of the second stroke end position from one end face of the connecting element is necessary. 320 This is achieved by adjusting the end position of the stroke using a damping element.500 The linear actuator must be positioned so that the end position of the stroke is reached before the second limit on the opposite side is reached. This inevitably reduces the total travel distance, but this loss is minimal and is already factored into the design of the linear actuator. 100 to be taken into account.

[0036] To allow access through the connecting element 320 to the damping element 500 on the third attack 406 To enable, the connecting element includes 320 an opening 502 for adjusting a damping element 500 The opening 502 This focuses precisely on the damping element. 500 aligned so that the damping element 500 for example, it can be adjusted using an Allen key or a screwdriver.

[0037] The connecting element 320is preferably designed as a yoke plate and is located at least partially on an end face of the linear drive device 100 Preferably, the connecting element 320 together with the command unit 300 It is molded as a single-piece component. This increases the stability and accuracy of the entire device and also reduces assembly effort.

[0038] Both the first attack 402 , the second attack 404 and the third attack 406 are together with the housing element 200 molded as a single-piece component. For example, such a housing element 200 All stops are milled from a solid piece of aluminum. The guide unit can be milled in a similar way. 300 produce by combining them with the second counterattack 304 and the first counterattack 302It is formed as a single-piece component. Similar advantages can also be found in the manufacture of the connecting element. 320 achieve by the leadership unit 300 and the connecting element 320 They are designed as a single-piece component. This saves as many assembly steps as possible and extends the service life of the entire linear drive device. 100 can be increased with higher precision.

[0039] The side of the housing element 200 a groove 204 arranged. It runs parallel to the direction of movement of the guide unit. 300 and is particularly suitable for arranging a sensor strip 600 (not shown) formed. Alternatively, the arrangement of a mounting thread is also suitable here.

[0040] The Fig. Figure 2A shows a perspective view of a linear drive device. 100according to a further embodiment. This embodiment has a damping element. 500 on the first attack 402 and on the third attack 406 Therefore, the first stroke end position and the second stroke end position are determined by the damping elements. 500 on the first attack 402 and on the third attack 406 Adjustable. The two stroke end positions are set by adjusting the corresponding damping element. 500 from the end face on the connecting element side and the opposite end face of the linear drive device 100 A repeated description of identical features of the preceding figure is omitted.

[0041] The Fig. Figure 2B shows a perspective view of a linear drive device. 100 according to a further embodiment. The linear drive device 100 It also includes two damping elements. 500, which at the first attack 402 and on the third attack 406 are arranged. Consequently, in this embodiment as well, the first stroke end position and the second stroke end position are determined by the damping elements. 500 on the first attack 402 and on the third attack 406 Adjustable. The stroke end positions are set by adjusting the corresponding damping element. 500 from the end face on the connecting element side and the opposite end face of the linear drive device 100 .

[0042] Additionally, the linear drive device features 100 a laterally arranged sensor strip 600 up. The sensor bar 600 Can at least one sensor element be used to determine the position of the guide unit? 300 They feature, for example, two sensor elements in the sensor strip. 600arranged to at least the first stroke end position and the second stroke end position of the guide unit 300 to be determined. Additionally, the housing element exhibits 200 two threads on the side 206 on, which serves as an alternative mounting for the sensor strip 600 can be used. To determine the position of the command unit 300 To determine, a magnetic element must be used. 306 (not shown) at the command unit 300 be ordered.

[0043] The Fig. Figure 2C shows a sectional view of a linear drive device. 100 according to a further embodiment. This embodiment has the identical features of the embodiment of Fig. 2 B. The linear drive device 100 It also includes the two damping elements. 500 , which at the first attack 402 and on the third attack 406are arranged. The first stroke end position and the second stroke end position are each determined by adjusting the damping elements. 500 from the end face on the connecting element side and the opposite end face of the linear drive device 100 changed.

[0044] The Fig. Figure 3A shows a perspective view of a linear drive device. 100 according to a further embodiment. This embodiment has a damping element. 500 on the first attack 402 (not shown) and on the second counterattack 304 Therefore, the first stroke end position and the second stroke end position are determined by the damping elements. 500 on the first attack 402 and on the second counterattack 304 The two stroke end positions are set by adjusting the respective damping element. 500 , whereby the adjustment depends exclusively on the connecting element 320opposite end face of the linear drive device 100 This is done. Here, the damping element is understood to be... 500 , which was part of the second counterattack 304 is arranged as a damping element that travels or moves with it 500 , since the same is connected to the command unit 300 The connected stop is arranged. A repeated description of identical features of the preceding figures is omitted.

[0045] The Fig. Figure 3B shows a perspective view of a linear drive device. 100 according to a further embodiment. This embodiment features the Fig. 3A exhibit identical features. The first stroke end position and the second stroke end position are determined by damping elements. 500 on the first attack 402 and on the second counterattack 304(not shown) determined. Accordingly, the setting of the two stroke end positions is carried out exclusively by the connecting element. 320 opposite end face of the linear drive device 100 out. Additionally, the linear drive device includes 100 the third attack 406 , which is not used to set a stroke end position and therefore is not a damping element 500 carries 406 However, a damping element is suitable 500 to accommodate and serve as a stop to limit the end position of the stroke. This could, for example, be adjusted at a later time if necessary. In this case, the adjustment of the added damping element would be made through the opening. 502 in the connecting element 320 This will be done. Laterally on the housing element 200 There is a groove 204 and two adjacent threads 206. Both the groove 204 as well as the threads 206 can be used to attach a sensor strip 600 can be used.

[0046] The Fig. Figure 3C shows a sectional view of a linear drive device. 100 according to a further embodiment. This embodiment features the Fig. 3A and Fig. 3B exhibits identical features. The first stroke end position and the second stroke end position are determined by damping elements. 500 on the first attack 402 and on the second counterattack 304 determined. The setting of the two stroke end positions is made from the connecting element. 320 opposite end face of the linear drive device 100 Additionally, the linear drive device features 100 a laterally arranged sensor strip 600 which uses sensor elements to determine the position of the guide unit 300 can serve this purpose. The magnetic element 306interacts with the sensor elements and is fully engaged in the first counter-attack. 302 integrated and therefore protected against external influences and damage.

[0047] The Fig. Figure 4 shows a perspective view of a linear drive device. 100 according to a further embodiment. This embodiment has a damping element. 500 on the third attack 406 up. At the first attack 402 There is no damping element. Consequently, the first stroke end position is determined by the damping element. 500 and on the third attack 406 adjustable. The connecting element 320 This includes two openings. 502 , in order to gain access to the damping element 500 To ensure clarity, repeated descriptions of identical features of the preceding figures are omitted.

[0048] The Fig. Figure 5 shows a perspective schematic representation of a linear drive device. 100 according to one embodiment. The housing element 200 and the command unit 300 The first lifting position and the second lifting position define a construction space. 700 The construction space 700 specifies the largest possible spatial extent that can be achieved by the linear drive device 100 which can be assumed by the two lifting end positions during operation. Both the lifting limiting device 400 (not shown) as well as the magnetic element 306 (not shown) are within this construction space 700 arranged, thereby the entire linear drive device 100 is realized as a very compact and space-saving device.

[0049] The Fig. Figure 6 shows a perspective view of a linear drive device. 100 according to an additional embodiment. A damping element 500is a traveling damping element 500 on the second counterattack 304 arranged and is trained to use the second attack 404 to work together to limit the second stroke end position. An additional damping element. 500 is on the front side of the connecting element 320 arranged. This damping element is located here. 500 trained to use the second attack 404 to cooperate in limiting the first lifting position. A repeated description of identical features from the preceding figures is omitted. Reference symbol list 100 linear drive devices 200 housing elements 202 Actuating element 204 Nut 206 threads 300 command unit 302 First counterattack 304 Second counterattack 306 Magnetic element 320 Connecting element 400 stroke limiting device 402 First Attack 404 Second attack 406 Third attack 500 damping elements 502 Opening 600 sensor strip 700 construction space QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 0868965 B1

[0002] DE 102010056367 A1

[0003] DE 102005015216 B4

[0004]

Claims

[1] Linear drive device (100), comprising: a housing element (200) in which at least one actuating element (202) is arranged, a guide unit (300) which is motion-coupled with the actuating element (202) and is guided linearly movable relative to the housing element (200) between two stroke end positions, a stroke limiting device (400) by means of which a first stroke end position and a second stroke end position of the guide unit (300) can be set, wherein the stroke limiting device (400) comprises a first stop (402) and a first counter-stop (302) for setting a limit of the first stroke end position, as well as a second stop (404) and a second counter-stop (304) for setting a first limit of the second stroke end position, characterized by , that the stroke limiting device (400) has a third stop (406) which is designed to set a second limit of the second stroke end position together with the first counter stop (302). [2] Linear drive device (100) according to claim 1, characterized by , that the stroke limiting device (400) has a fourth stop which is designed to set a second limit of the first stroke end position together with the second counter stop (304). [3] Linear drive device (100) according to claim 1 or 2, characterized by , that at least the first stop (402), the second stop (404) and the third stop (406) are formed to be firmly connected to the housing element (200). [4] Linear drive device (100) according to one of the preceding claims, characterized by , that at least the first counter-stop (302) or the second counter-stop (304) is designed to accommodate a damping element (500). [5] Linear drive device (100) according to one of the preceding claims, characterized by , that the first counterattack (302) and the second counterattack (304) are designed to be permanently connected to the command unit (300). [6] Linear drive device (100) according to one of the preceding claims; characterized by , that at least the first stop (402), the second stop (304) and the third stop (406) are designed to accommodate a damping element (500) each. [7] Linear drive device (100) according to one of the preceding claims, characterized by , that the guide unit (300) and the actuating element (202) are connected via a connecting element (320). [8] Linear drive device (100) according to claim 7, characterized by , that the connecting element (320) is arranged on the end face of the linear drive device (100). [9] Linear drive device (100) according to claim 7 or 8, characterized by, that the connecting element (320) is designed as a yoke plate. [10] Linear drive device (100) according to one of claims 7 to 9, characterized by , that the connecting element (320) and the guide unit (300) are formed as a single-piece component. [11] Linear drive device (100) according to one of claims 7 to 10, characterized by , that the connecting element (320) comprises at least one opening (502) for setting a damping element (500). [12] Linear drive device (100) according to one of the preceding claims, characterized by , that the connecting element (320) is designed to accommodate a damping element (500). [13] Linear drive device (100) according to one of the preceding claims, characterized by , that the first counter-stop (302) is designed to hold a magnetic element (306). [14] Linear drive device (100) according to one of the preceding claims, characterized by, that the housing element (200) includes at least one groove (204) for receiving a sensor strip (600). [15] Linear drive device (100) according to one of the preceding claims, characterized by , that the linear drive device (100) has a sensor strip (600) which has sensor elements for detecting at least the first stroke end position and the second stroke end position of the guide unit (300). [16] Linear drive device (100) according to one of the preceding claims, characterized by , that the housing element (200) and the guide unit (300) define an installation space (700) by the first stroke end position and the second stroke end position, wherein the stroke limiting device (400) is arranged completely within the installation space (700).

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