CN101280795A

CN101280795A - Drive device

Info

Publication number: CN101280795A
Application number: CNA2008100905982A
Authority: CN
Inventors: K·乌尔里克; R·哈拉尔德
Original assignee: Festo SE and Co KG
Current assignee: Festo SE and Co KG
Priority date: 2007-04-03
Filing date: 2008-04-03
Publication date: 2008-10-08
Also published as: EP1978262B1; EP1978262A1

Abstract

The fluid operated drive mechanism, with a moving drive in a housing, has an open holder recess in the housing wall to take a number of function modules on a common carrier as a function unit. The carrier has holder openings for the function modules.

Description

Drive unit

Technical field

The present invention relates to a kind of drive unit, described drive unit comprises and holds the movably device case of driving arrangement, forms stacker that at least one opens wide towards the shell body wall outer surface in described shell body wall; With a plurality of be separately fixed in this stacker and with the standalone feature module of driving arrangement collaborative work.

Background technique

Disclosed such device with fluid-operated linear actuating device form has two stackers among the open text DE19952881A1 of D.B.P. on its shell body wall, all is placed with the function module with the design of speed adjusting device form in each.In these function modules each all is provided with and the integrally formed fluid circuit connection set of shell body wall, supplies with or removes fluid by described fluid circuit, so that mobile driven plunger.This drive unit is the application-specific particular design, is difficult to change its manufacturing.Just need when thus, changing the diameter of fluid circuit connection set through the suitable cylindrical tube that separates of processing.This causes high relatively manufacture cost and warehouse cost.And manufacture process is also slow relatively.

Disclose among the open text EP1309803B1 of European patent speed adjusting device not only has been set in the stacker of device case, and for example sensor device can be set.Sensor device longshore current body pipeline connecting device is arranged in the stacker in this example, is to be set directly on the shell body wall in the example of the open DE19952881A1 of described D.B.P..

The open text EP1309803B1 of European patent has shown the fluid dynamic Linear Driving, wherein accommodates the insert that limits fluid line and have the base that is used for speed adjusting device in the inside of the device case that is positioned at the end.Like this, be used for the adjustment screw (or setting screw) of speed adjusting device and the hole that the insertion body is configured in the end cap of device case separably.

Summary of the invention

An object of the present invention is to provide the measure of the drive unit that can realize more reasonable and the initial type of describing of manufacturing that cost is lower.

To achieve these goals, several such function modules combine as functional unit with the public module carriage that supports them, and described module bracket is inserted or can be inserted in the interior stacker of shell body wall, is used for functional unit is fixed to housing.

Correspondingly, a plurality of functional units can be installed jointly in time saving mode.They are that term is the parts of the sub-component of functional unit, and be arranged on the module bracket of this functional unit or within, and the whole functional unit can be introduced under the help of module bracket in the stacker of the suitable cooperation in the wall of device case.Correspondingly dissimilar devices can also be designed to have the stacker of identical configuration, the different functional unit of wherein alternative insertion, mechanical interface (cooperating with the stacker) speech of module bracket with regard to it is identical, is different with regard to the function module that is fitted into them still.This makes drive unit produce the height suitability, has low manufacture cost and warehouse cost simultaneously.Can also make interface (or mating face) standardization between module bracket and the stacker, and change the structure that only limits to be configured to the module on the functional unit.Since, usually a plurality of function modules can be installed simultaneously, with very reasonable manner realization assembling owing in an individual feature unit, be integrated in one.

The present invention can adopt in the device of each type, and advantageous particularly when still combining with the fluid dynamic driving is more favourable when combining with the fluid dynamic Linear Driving.In this case, for example can the function module of fluid circuit connection set form be set in a functional unit and separate and be designed to the function module of speed regulation chuck assembly with it, in fact identical functions unit can be used for that fluid is supplied with and also as speed regulation thus.Because two function modules all are independently, with regard to specific function, the suitability that also has height, for example depend on special applications, can be provided for the fluid circuit connection set in different fluid cross section or assemble dissimilar further different speed adjusting devices, as the device of simple chuck form or the composite set of chuck and safety check.

A function carriage also can assemble easily more than two functional units.Thus for example except the above-mentioned functions module type, function module that can also the assembly sensor device form.These function modules can be combined in the mode of any desired in the functional unit, and the function module of other type also can be taken into account, for example valve module or electronic control module.

In all cases, because functional unit holds to being inserted into of small part in its shell body wall, therefore needed space is not more than conventional structure or only goes out slightly greatly.Module bracket can be assembled in the shell body wall at least significantly especially.

The present invention further favourable feature limits in the dependent claims.

For the design or structure of function module, the module bracket preferred fit has other stacker, wherein can insert a function module respectively.Go up in position for function module is fixed, especially preferably adopt claw, can adopt the connection set of other type certainly in principle.

The extended module bracket of one or more function modules.Particularly under situation with controlling device or other starting drive.The latter can stretch out and pass shell body wall, can hold them easily thus.

Yet can also arrange function module so in addition, the part of promptly stretching out module bracket is assembled in the groove that closes in the device case.The aftermentioned feature has for example realized especially that with more favourable mode sensor installation device, its connecting head can be arranged on the module bracket, yet for example using with the responsive portion of looking for the position, cooperate with concrete device of they is protected in the adjacent grooves fully.

Module bracket makes it to realize assembling in the stacker by being inserted into through special design.In this case, possible design is that the direction stopped up is consistent with the depth direction of stacker.

Assembly manipulation itself can be simply to insert or fill in operation.For fixing more special claw, Placement will be discussed, though can expect, for example utilize screw or fixing pin by the installation of independent fixing device.

Described interface can be configured to make inserts the operation back followed by transversely slip.Under this sliding condition, can realize lock operation simultaneously, by this lock operation, module bracket with respect to housing or be relatively fixed in stacker with depth direction.Only need the stuck-module carriage,, can not go out of lock once in a while thus to avoid slippage.

If be provided with the fixed block as bearing in the transverse opening of stacker, the above-mentioned device of mentioning of avoiding sliding can simply be made.In this case, it will be the problem of discrete item, but preferably belong to the problem of the part of device case, and the latter is a multicomponent structure.For example under the situation of Linear Driving, stacker can be formed on end or the end cap, and stacker is towards adjacent tubular element lateral open, and the assembling condition at device case is used as fixed block thus.

Particularly in the drive unit that fluid dynamic drives, module bracket can be provided with seal arrangement, and the sealing between module bracket and the shell body wall is provided during the installation in finishing stacker.

Be clear that an identical drive unit can have several stackers simultaneously, each stacker can assemble a function corresponding unit.In the linear actuating device that fluid dynamic drives, special recommendation all provides at least one this stacker on each in two end caps.

Description of drawings

The present invention is described below with reference to accompanying drawings, wherein:

Fig. 1 with perspective representation go out drive unit of the present invention first work embodiment, wherein drive unit is fluid dynamic (or hydraulic pressure) linear actuating device;

Fig. 2 along the II-II line vertically to analyse and observe the drive unit of expressing among Fig. 1;

Fig. 3 expresses the front end of the drive unit before the installation function unit, and each parts of functional unit are illustrated respectively;

Fig. 4 is the sectional view of the drive unit under the installment state of functional unit got along the IV-IV line among Fig. 3;

Fig. 5 illustrates the front end of drive unit with the view table that separates, and does not wherein have to show outstanding herein usually driving arrangement (or driver element or drive unit), with the form of decomposition view a functional unit that will be installed in the stacker is shown;

Fig. 6 expresses the another work embodiment's of drive unit front portion, and illustrated functional unit is removed and is split as independent parts;

Fig. 7 expresses the front end of the drive unit among Fig. 6, does not wherein have display drive device, and described front end combines with two functional units with function module of different designs, and described these two functional units replacedly are installed in the stacker;

Fig. 8 expresses configuration (or layout) view under the installment state of the functional unit therein among Fig. 7, with dot and dash line the adjacent tubular element as another housing parts is shown;

Fig. 9 expresses the rear view of the housing parts with stacker of looking along the arrow IX direction among Fig. 8; And

Figure 10 is that tubular element marks with dot and dash line once more along the longitudinal sectional view of the line X-X that passes through configuration in Fig. 8 and 9.

Embodiment

The drive unit of having showed two work examples is the linear actuating device by fluid force (or hydraulic coupling) operation.Their fondational structure is identical, therefore just no longer needs to show rearward end in the work embodiment of Fig. 6-10.Though feature of the present invention can be used for the drive unit of other type, for example device of rotation driving and for example electric power-fluid dynamic hybrid drive are based on the fluid dynamic linear actuating device to further description of the present invention.Following description has been done necessary correction to dissimilar drive units.

Under the situation without any opposite indication, explanation hereinafter both can be applicable to the first work example shown in Fig. 1-5 of linear actuating device, can be applicable to second embodiment shown in Fig. 6-10 again.

Drive unit has thin-long casing 1, and described housing has multicomponent structure, and has tubular element 2 as the middle casing parts, at its end end cap 3 and 4 as other housing parts setting.These three housing parts are fixed together by the pull bar that has axial clamping action in this example, and they also can be fixed together by alternate manner.One of them end cap also can be integrally manufactured with tubular element 2.

Tubular element 2 and two end caps 3 and 4 define the inner space 5 of housing together, and wherein driving arrangement 7 is set to and can moves along the direction of the longitudinal axis 6 of this device case 1.These driving arrangements 7 comprise the driven plunger 8 that engages the hole face of tubular element 2 with sealing means and slide type, and the piston rod 9 that is connected with piston, and piston rod 9 extends through first end cap 3 that (or crossing) is positioned at the end from device case 1.The outer end of piston rod 9 defines connection (or installation) portion 12, and can fix on this joint needs mobile parts, is not shown specifically among the figure.Except piston rod 9, driving arrangement 7 can comprise that also the drive transmitting that is used for driven plunger 8 arrives outside miscellaneous equipment (or device).

Fluid line 13 passes each extension in two end end caps 3 and 4, by described pipeline, controllably supply with fluid pressure mediums, in order that impel driving arrangement 7 to implement Linear Driving motion 16 by the double-head arrow indication with respect to housing 1 to two working rooms 14 that axially separate by the driven plunger in the

inner space

8 and 15.

Fluid line 13 ends at the connection mouth (or connected element) 17 in the outside of device case 1, be detachably fixed on the described connection mouth with the fluid circuit shown in the dot and dash line (or pipeline) 18 among the figure, realize removing from drive unit to drive unit supply fluid or with fluid by this connected element.

In each example, several function modules 22 are fixed on two end caps 3 and 4 of housing.By different way with driving arrangement 7 collaborative works.

Under two work embodiments' situation, all be provided with first function module of fluid circuit connection set 22a form on each end cap 3 and 4.It comprises the connection mouth of having described 17, and has realized that fluid circuit 18 is removably firmly fixing.In a particular embodiment, it is the form with the connector mouth, and it also can be the screw mouth device.Realize collaborative work with driving arrangement 7 at this by therefrom acting on driving pressure medium on the driving arrangement 7 by supply.

And in two work examples, each end cap 3 and 4 all is provided with second function module of speed adjusting device 22a form design.It is realized and driving arrangement 7 collaborative works by the liquid speed that the driving fluid of influence on driven plunger 8 could enter or leave working room 14 and 15.Favor speed controlling device 22b comprises butterfly gate part (or parts) 23 and safety check part (or parts) 24, these two valve portions couple together the control fluid and flow, the fluid that is arrived at gets around butterfly gate part 24 and crosses safety check part 24 with high relatively velocity flow, and the driving pressure medium that flows out is interrupted by safety check part 24, and by means of safety check part 23, because blockage effect, fluid can only flow with the speed that reduces.For example the adjustment piece (or setting member) 25 by being made of rotation head 25 makes that the degree of blockage effect is carried out variable adjustment becomes possibility.By the degree of congestion of setting, can also influence the speed of driving arrangement 7.

Other function module 22 is not shown in Fig. 1-5.In the work example of Fig. 6-10, on each end cap 3 and 4, be provided with sensor device 22c in addition on the other hand as the 3rd function module.It has for example showed and, axially to have projected in the tubular recess 27 in the tubular element 2 from corresponding end cap 3 and 4 as the responsive portion 26 of bar that sealing is around its route.Groove 27 is formed in the wall 28 around the tubular element 2 in enclosure interior space 5, and constitutes the form of axial continuous conduit especially.Collaborative work with driving arrangement 7 in this example comprises the position of detecting driven plunger 8, in actuation movement 16 processes of driven plunger when it activates described responsive portion 26 during near responsive portion 26, particularly when it arrives at the terminal position of stroke.Piston 8 preferably has the special activation part (actuator) that is used for this purpose, in particular, is the form of permanent magnet.

In order to be delivered in the numerical value that sensor device 22c external detection arrives, sensor device 22c is provided with connecting head 32, has on it can realize the connecting terminal that is connected with cable reading or numerical value can being input to electric control device by described cable.

Have two in the example in first work, in the second work example, have module bracket 33 that three function module 22 usefulness that are assigned to each end cap 3 and 4 support them the independently parts of conduct that gather together, as function module 34.

For module bracket 33, problem is that it is the integral body of being made by metallic material or plastic materials specially.Preferably it is by making with the end cap 3 and 4 identical materials of appointment.It has tabular or plate-like or even block configuration especially.

Functional unit 34 entities are connected on the end cap 3 and 4 of appointment.Only by module bracket 33, function module 22 is not participated in described connection.

The stacker 36 that opens wide towards the outer surface of shell body wall was formed on the corresponding end cap 3 and 4 in order to being connected of the functional unit 34 in the shell body wall 35 of device case 1, and module bracket 33 is inserted in the described stacker from the outside.The connection set 37 of any type is used to provide the firm connection between module bracket 33 and the shell body wall 35.In a side relative with opening, stacker 36 has the base plate 39 that is made of shell body wall 35.

Can be installed in correct position in order to ensure functional unit 34, module bracket 33 and stacker 36 have the assembly interface 38a and the 38b of cooperation, and for example correct the connection guaranteed in the cooperation between the interior shape of the external shape by module bracket 33 and stacker 36.These shapes or geometrical construction replenish basically mutually, and therefore can realize accurately equipped.

The advantage of this respect is, and is round-shaped if the cross section that stacker 36 indicates perpendicular to its depth direction, by dot and dash line departs from, and also can think to be suitable for the shape of cross section of its module bracket 33.This is in place with regard to guaranteeing that module bracket 33 only can be inserted in the position with specific orientation, and function module 22 is placed with correct relation or order.Just in this point, in the first work example, select elongated cross section, select the elongate section of rounding especially, yet in the second work example, adopt rectangle, preferred square sectional.

The specific length overall that keeps functional unit 34 is for guarantee that function module 22 is crucial correctly for their sizes on housing or structure (or feature).Correspondingly, fluid line 13 is divided into pipe section that is positioned at case side and extends along shell body wall 35 and the pipe section 13b that extends along module bracket 33 in bracket side, these pipe section are set to insert when putting in place when module bracket 33 at the opening of the outer surface of the internal surface of stacker 36 and module bracket 33, and they are interconnected.If, quite related (comparable association) occur between shell body wall 35 and module bracket 33 if several fluid line extends or also provides when being electrically connected.Excessive part between pipe section 13a and the 13b and also have in addition part between being electrically connected arbitrarily to be arranged on especially between the base plate 39 and bottom side of stacker 36 in the face of the module bracket 33 of described base plate.

For example can from Fig. 4 and Figure 10, find out, in order to ensure the function of expection, first and second function module 22a and the 22b in the pipe section 13b link block carriage 3 of bracket side.It ends at the fluid circuit port means 22a that is communicated with port one 7.

Just as mentioned, this is a problem, i.e. the function module 22 of the separate module that not do not couple together as a sub-component of its parts only is to be configured in the module bracket 33 with form independently.Also have more special Placement separate on module bracket 33, make to be easy to dissimilar function module 22 is combined.

The module bracket 3 that is preferably integral form for example is tabular design, all has other stacker 43a for each function module 22, and the longitudinal axis of described stacker is consistent with the depth direction 42 of the stacker 36 of already mentioned device case 1 especially.Other stacker 43a configuration adjacent one another are, and each all is in the position that holds a corresponding functional modules 22.Also have special the setting, thereby function module 22 can be along being introduced in by arrow 44 indicated directions in the other stacker 43a that mates with their in the cross section, and firmly being fixed in the stacker by claw 45 at the insertion state.In these two kinds of examples, this will be applicable to first and second function module 22a and the 22b, even the stacker 43a that is provided is set to after the installation of the later stage of the function module 34 of passing through shell body wall 35, they are not still covered by shell body wall 35.They are oriented in especially in the face of leaving the direction of shell body wall 35, if desired, these two function module 22a and 22b respectively slightly projection cross module bracket 33.Under the situation of first function module 29, this is applicable to start-up part (or actuation part), described start-up part is used to discharge the fluid circuit and the second function module 22b of insertion, and under the situation of the second function module 22b, this is applicable to the above-mentioned adjustment piece of mentioning 25.

Another stacker 43b that is used for the 3rd function module 22c of the work embodiment shown in Fig. 6-10 extends around the bight.On the one hand, it is as stacker 43a above-mentioned, open wide towards the outer surface 46 of module bracket 33, and this outer surface is relative with the base plate 39 of stacker 36; And on the other hand, yet also open wide to the side towards tubular element 2.Can correspondingly introduce sensor device 22c according to the arrow that passes obstruction along direction 44.Enter in the other stacker 43b to the front from the side that has its connecting head 32.

The sensor device 22 of An Zhuaning has from the responsive portion 26 of module bracket 33 side extendings like this, and can be fitted in the groove 27 in the tubular element 2 of adjacency according to the mode of having described.

In the illustrated first work example, stacker in the shell body wall 35 36 seals all the time at sidepiece.In this case, owing to module bracket 33 clogs along depth direction 36 according to arrow 48, so the equipped of functional unit 34 is simply to insert or fill in operation.For simple fixation in the position, connection set 37 is forms of jaw means 37a in this case, is different from above-mentioned insertion operation 48, it engages no longer needs further measurement.In this example, jaw means 37a have forever be configured on the module bracket 33 and in the dog rings 52 of outer ring around the soft claw arm 53 of jaw means and rubber-like, when module bracket 33 was inserted, it was engaged in one or more card nests 54 on the inside sidewall of stacker 36 in the mode of the hook that has hangnail especially.

Under the state that inserts, module bracket 33 supports the base plate 39 of stacker 36, in the middle of it is preferred annular seal 55 is set, described annular seal provides other internal flow in the sealing effect at fluid line 13 places and the connected element between module bracket 33 and shell body wall 35 to connect.Because this seal arrangement 55, module bracket 33 is also born the continuous thrust opposite with direction of insertion 48, and claw arm 53 firmly is supported in card nest or the card hole 54 thus, and has no gap (play-free) connection.

Substitute claw and connect, can also for example adopt screw to connect or adopt the Placement of pin or some other fixing device.According in this work example, can select permanent connection or Placement removably according to the mode of expection.

In the second work example,

assembly interface

38a and 38b mate mutually, to fit each other, make the insertion of module bracket 33 to carry out as filling in the part of slide.The first step referring to arrow 42, makes module bracket 33 move in the stacker 36 along depth direction 42 in the mode similar to the first work example, does not arrive at the final position after such insertion operation of passing (or crossing) depth direction 42.When a part of module bracket 33 as slide 56 was moved, it only arrived at the final position by another arrow indication of passing depth direction 42.The direction 56 of Hua Donging is consistent with the longitudinal axis 10 of device case 1 in this case.

In order to realize this assembly operation, the stacker 36 in the second embodiment of the invention is provided with the cross-member opening 57 towards tubular element 2.It can realize that the module bracket that will be positioned at a position is incorporated into stacker 36, and wherein module bracket has the transverse edge portion 58 that assembly opening 57 extends laterally stacker 36 of passing.Only in slide 56 processes below, the whole cross-sectional configurations of module bracket 33 is in stacker 36, and locking simultaneously makes module bracket 33 remain on depth direction 42 axial with respect to shell body wall 35 interlockings ground.Avoided backward push module carriage 33 and occurrent unclamping by tubular element 2, in introducing module bracket 33 backs tubular elements are installed, the local at least front portion at assembly opening 57 of described tubular element 2 is extended and covering assemblies opening 57 remains on module bracket 33 in the scope of the bearing on the appropriate location in formation.

The connection set 37 of locking device 37b form impels the generation of above-mentioned lock operation.The slide lock projection 62 relevant with glide direction 56 laterally is formed on the module bracket 33, and in the process of sliding movement 56, slide protrusion is fitted into the locking nest in the sidewall of stacker 36 or cheats in 63.In this example, paired locking projection 62 and locking nest 63 are specified four angle parts with rectangular shape that offer module bracket 33.Because the face of the mutual collaborative work of these parts tilts, slide 56 has been realized the base plate 39 supporting module carriages 33 towards stacker 36, that is to say, especially along with the insertion of seal arrangement 64, realized with first embodiment of the invention in seal arrangement 55 identical functions.

Assembly interface

38a and 38b are cooperated, i.e. the insertion of module bracket 33 must be passed depth direction 42.Then module bracket 33 is incorporated in the stacker 36 that opens wide towards sidepiece as drawer.In this case, in this work example, the assembly opening 57 that realize to insert can be orientated on the direction different with longitudinal axis 10, for example crosses the direction orientation of longitudinal axis.

The module bracket of inserting 33 preferably is placed on the major component of its total height in the stacker 36.Yet preferably it is provided with around edge part 65 in its top side, the junction point between the sidewall of described edge part covering carriage and stacker 36, and avoid entering of dirt.

The insertion of module bracket 33 in stacker 36 preferably carried out under the equipped situation of function module.In other words, functional unit 34 is installed as a unit.Yet have only when module bracket 33 has been incorporated into its stacker 36, just can insert those function modules 22a and the 22b that can be introduced in from the top side that is associated with outer surface 46 in the module bracket 33.

In these two work examples, on each end cap 3 and 4, all be provided with the stacker 36 that is used for functional unit 34.Yet under the situation of needs, can also remove one of them.If suitably select to be positioned at the fluid circuit of device case 1 inside, make by function module 22 for the equipped respective amount of functional unit, the function module 22 of an end cap can also be associated with other end cap, this can be be installed in other stacker 36 in another functional unit 34 combine, perhaps can be one-piece element as the functional unit 34 that has illustrated.

Fig. 7 also is used to make principal advantages of the present invention to become clearer.Have two functional units with different designs 34 that replacedly are installed in or the identical stacker 36 as can be seen.The configuration of the assembly interface 38a of the module bracket 33 of these two functional units 34 is identical, and can combine by assembly interface 38b without lifting an eyebrow and stacker 36.Owing to being fixed on the module bracket 33 two function modules 22 are only arranged on the functional unit shown in the left side 34, so module construction there are differences in three function modules 22 on the functional unit shown in the right side 34.Also can find out the port diameter difference of the fluid circuit connection set 22a that exists in two functional units 34, can connect fluid circuit thus with different cross section.

Therefore described drive unit is provided with several functional units 34 that have same components interface 38a and have suitable suitable assembly interface 38b, and described functional unit is fitted with dissimilar or varying number function module 22.In order to produce drive unit with different size, therefore the stacker 36 with same components interface 38b is provided on corresponding device thereof housing 1, be possible then for described stacker provides desirable functional unit 34 in

addition.Assembly interface

38a and 38b are standards with respect to device case 1 thus, no longer need complicated independent adaptive machining operation.

As shown in the accompanying drawing, described module bracket 33 is in aggregates with shell body wall 35 at least to a certain extent, compares with conventional structure thus, do not need the overall dimensions of drive unit is done disadvantageous expansion.

At least one stacker 36 that is used for a functional unit 34 also can form in addition, perhaps as the alternative on the tubular element 2.

Claims

1. drive unit, it comprises the device case (1) that accommodates activity-driven equipment (7), wherein in the shell body wall (35) of described device, form the stacker (36) that at least one opens wide towards the outer surface of shell body wall (35), and wherein a plurality of independently function modules (22) are fixed in such stacker (36), be used for and described driving arrangement (7) collaborative work, it is characterized in that: several such function modules (22) combine as functional unit (34) with the public module carriage (33) that supports them, wherein for functional unit (34) is connected to device case (1), described module bracket (33) is inserted or can be inserted in the stacker (36).

2. drive unit according to claim 1 is characterized in that: described module bracket (33) part has several other stackers (43a and 43b), and wherein function corresponding unit (22) are inserted respectively or can be inserted.

3. drive unit according to claim 2, it is characterized in that: the other stacker of described module bracket (33) (43a and 43b) to small part is arranged to, when module bracket (33) was fitted in the stacker (36) of device case (1), they were not subjected to the constraint of the shell body wall (35) of device case (1).

4. according to claim 2 or 3 described drive units, it is characterized in that: described function module (22) is kept by the jaw means (45) in the other stacker (43) that is associated.

5. according to each described drive unit in the claim 1 to 4, it is characterized in that: at least one function module (22) is stretched out and is crossed the module bracket (33) that supports it.

6. drive unit according to claim 5 is characterized in that: the extension (26) of described function module (22) extends away from device case (1).

7. according to claim 5 or 6 described drive units, it is characterized in that: the extension (26) of described function module (22) extends in the groove (27) of device case (1).

8. according to each described drive unit in the claim 1 to 7, it is characterized in that: described module bracket (33) is inserted and maybe can be inserted in the stacker (36).

9. drive unit according to claim 8 is characterized in that: direction of insertion (44) is consistent with the depth direction (42) of stacker (36).

10. according to each described drive unit in the claim 1 to 9, it is characterized in that: described module bracket (33) can be inserted in the stacker (36) by the slide (56) of filling in operation (44) and next crossing depth direction (42) orientation along the depth direction (42) of stacker (36).

11. according to each described drive unit in the claim 1 to 10, it is characterized in that: described module bracket (33) can be fixed or be fixed in the stacker (36) by jaw means (37a).

12. drive unit according to claim 11 is characterized in that: described jaw means (37a) comprises the dog rings (52) around module bracket (33), the described elastic card claw arm (53) that is equipped with in the wall (35) that is suitable for being engaged to device case (1).

13. according to each described drive unit in the claim 1 to 12, it is characterized in that: described stacker (36) has cross-member opening (57), realizes assembling with the insertion by module bracket (33).

14. according to each described drive unit in the claim 1 to 13, it is characterized in that: described device case (1) is the multi-part design, stacker (36) is formed on first housing section (3 and 4), and has cross-member opening (57), in order to keep module bracket (33), it is covered by adjacent second housing section (5) to small part.

15. according to each described drive unit in the claim 1 to 14, it is characterized in that: described module bracket (33) is locked in the stacker (36) with respect to shell body wall (35).

16. drive unit according to claim 15, it is characterized in that: described module bracket (33) and described shell body wall (35) are provided with the locking device (37b) that forms on it, in the process that is inserted into stacker (36) or following closely, interlocking took place for their when module bracket (33) depth direction that crosses stacker (36) slided.

17. according to each described drive unit in the claim 1 to 16, it is characterized in that: seal arrangement (55 and 64) is arranged on the module bracket (33), and described seal arrangement is positioned between the wall of module bracket (33) and stacker (36) under the assembling finishing stage.

18. according to each described drive unit in the claim 1 to 17, it is characterized in that: it comprises several stackers (36), each can be equipped with a functional unit (34).

19. according to each described drive unit in the claim 1 to 18, it is characterized in that: several functional units (34) are interchangeable to be inserted in the identical stacker (36), and difference is that they have the assembling of different function units (34).

20. according to each described drive unit in the claim 1 to 19, it is characterized in that: as the configuration of drive unit, described drive unit can and comprise the driving arrangement (7) that is provided with driven plunger (8) by fluid dynamic.

21. drive unit according to claim 20 is characterized in that: described module bracket (33) is fitted with the function module (22) that is designed to fluid circuit connection set (22a) form.

22. according to claim 20 or 21 described drive units, it is characterized in that: described module bracket (33) is fitted with the function module (22) that is designed to speed adjusting device (22b) form.

23. according to each described drive unit in the claim 20 to 22, it is characterized in that: described module bracket (33) is fitted with the function module (22) that is designed to sensor device (22c) form.

24., it is characterized in that: as the configuration of linear actuating device according to each described drive unit in the claim 1 to 23.

25. drive unit according to claim 24, it is characterized in that: described device case (1) has the tubular element (22) and the end cap (3 and 4) of at least one tip side that is arranged on device case, forms at least one and be used for the stacker (36) of functional unit (34) at least one end cap.