CN1318718C

CN1318718C - Mountable actuator in wall opening for closure of vehicle

Info

Publication number: CN1318718C
Application number: CNB018200648A
Authority: CN
Inventors: W·U·斯皮斯
Original assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Current assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Priority date: 2000-12-04
Filing date: 2001-11-22
Publication date: 2007-05-30
Anticipated expiration: 2021-11-22
Also published as: CN1479833A; CZ20031545A3; BR0115835A; AU2002221883A1; EP1339931A1; WO2002046558A1

Abstract

The invention relates to a housing (21) for mounting in a wall opening (11) in order to actuate the closures of a vehicle. According to the invention, a flexible spacer (23) is arranged between the housing (21) located on the external side of the wall (12) and a supporting pressure element (22) on the internal side of the wall (13) when mounting. Tensioning elements (24) act on the pressure element (22) and, when mounted, are screwed against the housing (21) via the wall (10). The invention also relates to a unit (20.1) formed by the housing (21), the spacer (23), the pressure element (22) and the tensioning elements (24) which can be inserted together in the wall opening (11) from the external side of the wall (12). After insertion, the pressure element (22) engages with the interior of the wall from the rear. When the tensioning elements (24) are activated, the unit (20.1) becomes blocked against the wall (10).

Description

Can be assemblied in the operating mechanism that is used for closure of vehicle in the wall opening

The present invention relates to a kind of operating mechanism of closure of vehicle, have one and outside wallboard, install to a housing before the wall opening, this housing comprises described closure member operating mechanism and is bearing on the wallboard outside at confined state, has a compression member, on the wallboard inboard of this compression member before confined state is bearing in described wall opening, also have compression member is pressed in clamping element on the housing, the centre is connecting wall.A back shroud that the important application occasion is an automobile of this operating mechanism.At this moment the skin of back shroud formation " wallboard " and this wallboard have a wall opening, from the wallboard outside housing are assemblied on the wall opening, and housing comprises the closure member operating mechanism.

Be used as the closure member of luggage-boot lid for the known operation mechanism (DE 19 33 996 U) of this form, a shell plates that will carry out this closure member is put into the outside of vehicle body.A nutplate is set in the inboard of vehicle body, and screw is by the internal thread of precession nutplate the inside.Screw passes the perforate on the shell plates and is being bearing in passing on the hole of vehicle body from the outside by its head of screw and pad behind the screw-driving from the outside of vehicle body.Make thus car body panel be clamped on the outside shell plates with the inboard nutplate between.

Such operating mechanism fixedly is reliable.Shell plates is from must realize mutually the outside and being connected of the nutplate that plays the compression member effect from the inboard harmoniously.This need correspondingly notice moving of the wallboard that is positioned at the opposite mutually.Shell plates and nutplate must be put on the position of determining mutually, so that can insert and tighten screw simultaneously.Could realize being connected between shell plates and the nutplate that is arranged on the inboard on the wallboard outside then.Have only when these parts to be placed into on the tram of wall opening the time, screw can reliably be tightened.

Other different embodiment of known this operating mechanism, they have similar shortcoming.For example for automobile lid (DE 19 34 870 A), one of them is fixed on packaged unit on the vehicle body and one in the corresponding way and is positioned at the lock pin that automobile covers and concurs.This external one can pressure controlled closed cylinder (DE 44 08 910 A1) form in, its cylinder body shell is fixed on the inboard of back shroud, and in the outside housing shell of mutual roof pressure.At last, lock that is combined on the automobile pillar is attached to a band pin screw (EP 0 712 985A1) on the car door, and band pin screw is fixed on the door-plate by nut.Band pin screw is positioned on the outside plate, and outside plate fixedly is tightened on the paired plates by two nuts.Thus with the door-plate sandwich-type lean between outside plate and paired plates.

The objective of the invention is, when carrying out the assembling of this operating mechanism, simplify the manual operations of clumsiness above-mentioned.This purpose realizes according to the measure that the present invention provides, that is: the elasticity part that spaces is set between described housing and compression member, it has a surplus in the initial separation that unassembled state presented with respect to wallboard thickness, described housing, part spaces, compression member and clamping element constitute a pre-assembled element of construction, compression member can pass wall opening from the wallboard outside and inject, wherein compression member have one with respect to described wall opening internal diameter at least when passing wall opening size littler, but the anti-wallboard inboard that is stuck in after injecting, the initial separation of the part that spaces when the operation clamping element on described element of construction is reduced to the final spacing of being determined by wallboard thickness.

Solution adopts preassembled element of construction hereto, and this element of construction can be used as integrated operation.The time be integrated in tension part in the element of construction in assembling and pass wall opening from the wallboard outside and inject, up to tension part with its anti-wallboard inboard that is stuck in of roof pressure part.Compression member and housing remain on the element of construction with keeping at a certain distance away between this erecting stage.This point realizes that by the elasticity part that spaces this part that spaces is arranged between housing and the compression member and at first guarantees the enough spacings with respect to wallboard thickness of this part that spaces when assembling.But when the tension clamping element, reduce this spacing corresponding to wallboard thickness.The tension of clamping element can realize from wallboard is inboard.

Not only make processing ease by the measure of in Fig. 4 to 6, mentioning, can also guarantee structure member is fixed on the wall opening antitheftly.This is described in detail in the following description.

Other technical scheme of the present invention and advantage provide in embodiment describes and can find out from accompanying drawing.With a plurality of embodiment the present invention is shown in the accompanying drawings.In the accompanying drawing:

Fig. 1 illustrates wallboard and the element of construction before its assembling with wall opening with the axial section of simplifying,

Fig. 2 to be representing to be inserted in the element of construction in the wall opening corresponding to the view of Fig. 1, yet is before clamping element is effectively installed,

Fig. 3 is illustrated in the operating mechanism that clamping element injects among Fig. 2 after effectively installing, the longitudinal sectional drawing of the section line III-III that turns back by Fig. 4 shown in it,

Fig. 4 illustrates the operating mechanism that is fixed on the wallboard with the rear elevation of the direction of observation of the arrow IV from Fig. 3,

Fig. 5 to 8 illustrates the another kind of embodiment of element of construction, and represents with a view with the similar section of Fig. 1 to 4, view and rigging position,

Fig. 9 illustrates the specific embodiment of element of construction when it injects the wall opening assembling with the stereogram of looking from the wallboard inboard,

Figure 10 goes out the 3rd embodiment of operating mechanism with the simplification three-dimensional icon from the wallboard inboard,

Figure 11 is the longitudinal sectional drawing of the operating mechanism shown in cutting off there along the section line XI-XI of Figure 10,

Figure 12 sees that with the section line XII by Figure 13 longitudinal sectional drawing in the past schematically illustrates the 4th embodiment according to the present invention's operation, and is to inject under first kind of state of wall opening at it,

Figure 13 is the rear elevation of the direction of observation of arrow XIII among Figure 12, is illustrated in the element of construction of from wallboard inboard looking shown in Figure 12.

An operating mechanism that is not shown specifically is in housing 21 the insides, and housing only is expressed as a flat board in the schematic diagram of Fig. 1 hereto.Now importantly this operating mechanism is fixed on perforate 11 the insides of a wallboard 10, this wallboard for example is the thin plate of automobile back shroud.This present invention is proposed a special element of construction 20.1.

Described element of construction 20.1 is made up of the compression member 22 that the same here flat type of the housing of having mentioned 21 and constitutes, and a flexible part 23 that spaces is set between them, and this part that spaces is made of a stage clip in this case.Several this parts 23 that space also can be set.Two screws 24 also belong to element of construction 20.1 in the illustrated case, and these two screws satisfy multi-functional.

Screw 24 at first is used for the connection of above mentioned structure member 21 to 23.Screw 24 passes the hole 15 on the flat compression member 22 and acts on internal thread 26 on the housing 21 with its end of thread with its bar handle 25.Compression member 22 is preferably in its inboard in the face of housing 21 and has four support foots 27.

Make spring 23 housing 21 and compression member 22 between at support foot 27 places have an initial separation 16.1 as 24 on the screw of clamping element with such distance tension at unassembled state, this spacing is greater than the wallboard thickness 14 at wall opening 11 places.Be under the prestressing force at this spring 23, this prestressing force applies one to compression member and is pressing off on the direction effectively power 17 with respect to housing 21.

Now element of construction 20.1 is injected along mobile arrow 18 directions from wallboard 10 outsides 12.As Fig. 4 indicated, compression member 22 had an outline 29 at this, this outline at least in one direction be dimensioned to profile less than wall opening 11 border seamed edges 19.Although the outline 29 of compression member 22 is similar to the shape of border seamed edge 19 in the illustrated case, the size on all directions is all smaller by contrast.Realize that thus the straight line that passes wall opening 11 injects 18, until compression member 22 arrives the wallboard inboard 13 that is positioned at the opposite.Under any circumstance the outline of housing 21 is compared greatlyyer significantly at least partially on size design with the seamed edge shape of wall opening 11, makes housing 21 lean after injecting 18 outside wallboard on 12.

The vertical of the element of construction 20.1 that mobile arrow 28 is indicated in carrying out by Fig. 1 after parallel interspersed 18 moves, and arrives the centre position of being seen by Fig. 2 always.This two-stage moves

order

18,28 bayonet types that can be called element of construction 20.1 and moves.Thisly vertical move 28 o'clock flat compression members 22 and arrive the edge of wall openings 11 outsides carrying out, as being clear that especially by Fig. 4 by its support foot 27.Thisly vertical move 28 o'clock housings 21 and also always 12 hide wall openings 11 carrying out in the outside.If in this centre position shown in Figure 4 clamping element is worked, then compression member 22 roof pressure housing 21 on the direction of mobile arrow 30 clamps wallboard 10 simultaneously as shown in Figure 3 betwixt.Present a final spacing 16.2 then between support foot 27 and housing 21, this spacing equals wallboard thickness 14 substantially.Effective installation of the clamping element that is made of screw 24 here 31 realizes from tightening of wallboard inboard 13 by a tightening tool.In part 23 distortion of spacing of this elasticity.Element of construction 20.1 is positioned on the wallboard 10 reliably.Housing 21 is retained in the wallboard outside 12.

Wall opening 11 is special-shaped in the illustrated case, and it comprises top 32 and narrow bottom 33 of an increasing as shown in Figure 4.The outline 29 of flat compression member 22 is similar with these hole profile 19 shapes.The stationary state rear elevation of wallboard shown in Figure 4 in element of construction 20.1, for clear, each position at housing 21 back sides 64 all uses some shades to mark, and can see these shades for the rear elevation of Fig. 4 through the reserve part of wall opening 11.In Fig. 4, can also see four support foots, wherein two lower ends, two lower ends that are arranged on bottom 33 on the crossover position of bottom 33 and in addition on top 32.Therefore the vertical 28 desired final positions that just can reach Fig. 2 of moving that in assembling is moved, only need a weak point.This can be by being determined by mobile 28 backstops that limited.On element of construction 20.1, is producing by the represented clamping force of arrow among Fig. 3 34,35 by clamping element 24 under the assembling situation of Fig. 3 and tightening reaction force.

Fig. 5 to 8 illustrates the version 20.1 ' of said structure unit, and on view and position corresponding to view among Fig. 1 to 4 and position.Identical part adopts identical label symbol, and therefore the description above is effective.It is just enough only to provide the difference part.

In Fig. 5, two

boss

71,72 are set on the back side 64 of housing 21, they can constitute and be positioned at the lower end 65 and the upper end 66 of back side of shell 64 integratedly with housing.Lower convex platform 71 has wedge-like profile and has a lozenges 73 that points to compression member 22 inner surfaces 67.And convex platform 72 has a undercut portion 74 of leaving back side of shell 64.

Still the element of construction 20.1 ' of loose splicing is bearing on the outer seamed edge 68 of wall opening 11 by lozenges 73 in the reeve position of Fig. 6.Can also leave the slit with perforate profile 19 at this convex platform 72.By the small vertical reeve position of moving pre-definite element of construction 20.1 ' after 28 of being bearing in of 68,73 places; Element of construction 20.1 ' can not fallen down voluntarily.

If housing is near the wallboard outside 12 when tightening 31 clamping elements 24, lozenges 73 slides into its shaft shoulder position 75 with 75 expressions in Fig. 6 along the outer seamed edge 68 of perforate.Element of construction 20.1 ' is being raise on the direction shown in Fig. 6 arrow 70.Convex platform 72 moves to the back of wallboard inboard 13 with rising simultaneously.The undercut portion 74 of boss slides on interior seamed edge 69, and undercut portion has a gradient reverse with lozenges 73.

The stationary state of expression element of construction 20.1 ' in Fig. 7 and 8.Similar with Fig. 4 in Fig. 8, not only the back side of back side of shell 64 but also convex platform 72 can be seen shade by a shadow representation on wallboard inboard 13.At stationary state, lower convex platform 71 enters a breach 76 of compression member 22.Boss 72 is bearing on the wallboard inboard 13 and therefore is used for the especially reliably roof pressure position of housing 21 on the wallboard outside 12.If someone attempts in Fig. 7 on the positions of 77 expressions fixing element of construction 20.1 ' is carried out unreasonable operation, then these operations can be not successful.Element of construction 20.1 ' not only is bearing on the mentioned support foot 27 in lower end and middle part, and by the undercut portion 74 anti-top edge positions that are stuck in wall opening 11.Implementation structure unit 20.1 ' is fixing especially reliably thus.

In Fig. 9, the concrete structure of element of construction 20.2 is shown and corresponding to the centre position of the embodiment 20.1 that in Fig. 2, provides by means of second embodiment.Represent with identical label symbol that with structure member like the first embodiment same item therefore the description above is effective.It is just enough only to provide the difference part.From housing, can only see a flange 36 that leans on the wallboard outside 12, extend a cover 37 that passes wall opening 11 from flange.This cover 37 is used to hold closed cylinder.Compression member 42 is provided with breach 40, and breach has a U-shaped that has two side legs 41 in the flat end of compression member 42.Can be at this with reference to

top profile

19,29 in conjunction with 20.1 descriptions of first element of construction.Also be positioned on described that position for compression member 42 support foots 27.

Two helical compression springs 43 are as the elasticity part that spaces in Fig. 9, and its threaded hole is passed by the clamping element that is made of screw 24 equally.The internal thread that is used for screw 24 is positioned at bearing pin 38, and bearing pin protrudes from the shell flange 36 of front end and passes wall opening 11 at confined state.The bearing pin end attenuates and puts in the spiral inside of stage clip 43.Stage clip is bearing on the end face of bearing pin 38.

At element of construction 20.3 shown in the 3rd embodiment of Figure 10 and 11, at this replacement compression member is two parts 45 that can move in opposite directions.These parts 45 laterally move with respect to above mentioned reeve direction between base plate 44 and cover plate 46.These parts 45 have one with respect to the lozenges 47 that injects direction 18 diagonally extendings, by this lozenges parts are moved mutually.Thrust spring 48 is between two parts 45, and it plays two parts 45 are expanded the effect that loads on arrow 50 directions.Also have elasticity part 49 that spaces below base plate 44, it is made of leaf spring at this.Leaf spring 49 overhang brackets are on housing of being represented by wallboard 21 and base plate 44.As clamping element, this screw passes

parts

46,45,44,49 that stack up and down together and screwed hole 26 the insides that can be tightened in housing 21 at this band cap screw 39.Housing 21 also has an outer valve jacket 37 in this case, and it passes the breach that mentioned parts stack that is positioned at as seen from Figure 10.Can also dispose the side guide strip 58 that is used for two parts 45 for stacking.The overall dimension 63.1 of this wedge-shaped member 45 is in the ordinary course of things greater than the internal diameter of wall opening 11.

The centre position of this element of construction 20.3 shown in Figure 11 on the wallboard 10 that dots.Lozenges 47 overcomes and acts on this lip-deep power load 50 and move and cross stride sizes on the wall opening 11 mutually when injecting 18 wall openings 11.To arrive wallboards inboard 13 the time when two lozenges 47, owing to act on expansion force 50 on the lozenges lozenges removed and mutually by the anti-edges that are stuck in around the wall opening 11 of its end regions 57 again.To move be unnecessary to the bayonet type of element of construction 20.3 in this case; In injecting 18 processes of moving, produced anti-card automatically.After this only need clamping element, promptly be with cap screw 39 with respect to housing 21 fixed strains.

What replace moving-member also can adopt deflectable parts in the alternate embodiment of element of construction 20.3.But be bearing on the turning cylinder to this parts deflection, turning cylinder is positioned at the back side of housing 21 and passes wall opening 11 adaptedly.But the inclined plane on the deflection component can with parts 45 the same working.

At the 4th embodiment of element of construction 20.4 shown in Figure 12 and 13, this element of construction is positioned at the centre position corresponding to first embodiment shown in Figure 2.The sign of similar structures parts adopts the label symbol identical with first embodiment in this case, and therefore the description above is effective.It is just enough only to provide the difference part.

For housing 21 exterior panel 21 only is shown also, this exterior panel passed wall opening 11 at mobile 18 o'clock in element of construction 20.4 reeves and is bearing on the wallboard outside 12.Also have flat compression member 52 in this case, this compression member has support foot 51 at it in the face of housing 21 1 sides.The connection of

parts

21,52 realizes that by playing the space leaf spring 53 of part of elasticity leaf spring works pressing off on the direction of two

parts

21,52 on the one hand.Connect on the other hand by a spacing stopper and realize, formed at the barb 60 that this this measure is positioned on housing 21 back sides by.This barb 60 passes the open-work 54 that is positioned on the compression member 52 with its neck of hook 61.And gib head 62 at its back side the anti-compression member 52 that is stuck in.As shown in figure 12, compression member 52 and wall opening 11 have outline 29 or the border seamed edge of repeatedly having described 19.Leaf spring 53 is provided with multiplely.Support foot 51 on the compression member 52 is positioned on the outline position that had repeatedly repeated.Although it is similar that the size of

profile

19,29 is shapes, there is such difference, make the reeve of element of construction 20.4

parts

60,52,53 that are positioned on housing 21 back sides move 18 and can pass wall opening 11.

According to vertical moving on the direction with the arrow 55 of compression member 52 in Figure 12 only after Figure 12 and 13 the reeve.This moves the housing 21 that needn't stretch together.Open-work 54 on the compression member 52 has enough sizes and makes the neck of hook 61 arrive another position of open-work 54 in 55 processes of moving for this reason.As shown in figure 12, support foot 51 is furnished with up-wards inclination face 56 in the illustrated case.Therefore support foot 51 moves to the border seamed edge 19 of wall opening 11 by the inclined plane in 55 processes of moving, and is bearing in up to support foot on the wallboard inboard 13 of wall opening 11 edges with leaning.Up-wards inclination face 56 can be sufficiently flat, makes compression member 52 be locked at automatically on the mobile terminating position.Can detent mechanism be set the mobile terminating position hereto at back side of shell in case of necessity.

Claims

1. the operating mechanism of closure of vehicle,

Have one and install to the preceding housing (21) of a wall opening (11) from the wallboard outside (12), this housing comprises described closure member operating mechanism and is bearing on the wallboard outside (12) at confined state,

Have a compression member (22), this compression member is bearing on the preceding wallboard inboard (13) of described wall opening (11) at confined state,

Also have compression member (22) is pressed in clamping element (24) on the housing (21), intermediate connecting wall (10) is characterized in that,

The elasticity part (23) that spaces is set between described housing (21) and compression member (22), and it has a surplus in the initial separation (16.0) that unassembled state presented with respect to wallboard thickness (14),

Described housing (21), the part that spaces (23), compression member (22) and clamping element (24) constitute a pre-assembled element of construction (20.1,20.2,20.3,20.4), and its compression member (22) can pass wall opening (11) from the wallboard outside (12) and inject (18),

Wherein compression member (22) have one with respect to described wall opening (11) internal diameter (19) at least when passing wall opening (11) size littler, but injecting (18) counter afterwards wallboard inboard (13) that is stuck in,

The initial separation (16.1) of the part that spaces (23) when operation clamping element (24) on described element of construction (20.1,20.2,20.3,20.4) is reduced to the final spacing of being determined by wallboard thickness (14).

2. operating mechanism as claimed in claim 1 is characterized in that, the described part that spaces (23) is made of a spring (23).

3. operating mechanism as claimed in claim 1 or 2 is characterized in that, described clamping element (24) is used for being connected of described housing (21) and compression member (22) simultaneously.

4. operating mechanism as claimed in claim 1 or 2 is characterized in that,

Described housing (21) is gone up at the back side (64) of pointing to compression member (22) to have a lozenges (73) and has a undercut portion (74) in housing top (66) in lower housing portion (65),

Described lozenges (73) have a gradient that point to inject direction (18) and undercut portion (74) trend in contrast,

Be in reeve state in the wall opening (11) at element of construction (20.1 '), described lozenges (73) is bearing on the following seamed edge (68) on wall opening border (19), and the anti-last seamed edge (69) that is stuck in wall opening border (19) of undercut portion,

Lozenges (73) slides in the shaft shoulder position (75) of the last lozenges (73) on housing of following seamed edge (68) on a wall opening border (19) when operation (31) clamping element (24), element of construction (20.1 ') moves towards last seamed edge (69) direction of wall opening (11) simultaneously

And undercut portion (74) moves to the back on upper wall plate hole border (69) simultaneously gradually with deepening.

5. operating mechanism as claimed in claim 4 is characterized in that, described lozenges (73) and/or undercut portion (74) are arranged on the compression member (22) inboard (67) that points to housing (21).

6. operating mechanism as claimed in claim 1 or 2, it is characterized in that, the connection of described housing (21) and compression member (52) produces by pressing off the part that spaces (53) that works on the direction, be arranged between housing (21) and the compression member (52) on the one hand in described element of construction (20.4), produced by a spacing stopper (60) on the other hand, this spacing stopper is determined the maximum spacing (16.1) between housing (21) and the compression member (52).

7. operating mechanism as claimed in claim 6, it is characterized in that, described spacing stopper is made up of a barb (60) that is arranged on the housing (21), and its neck of hook (51) is passed in a open-work (54) on the compression member (52) and the anti-compression member (52) that blocks of its gib head (62).

8. operating mechanism as claimed in claim 1 or 2 is characterized in that, described clamping element is made of screw (24), and its head of screw compresses compression member (22),

The bar handle (25) of wherein said screw (24) passes the hole (15) on the compression member (22) and can be tightened in internal thread (26) the inside that is positioned on the housing (21).

9. operating mechanism as claimed in claim 8 is characterized in that, the described part that spaces is made up of a helical compression spring (43), and axially passes described stage clip (43) as the screw (24) of clamping element.

10. operating mechanism as claimed in claim 1 or 2 is characterized in that, described compression member is made up of a slide plate (52), and this slide plate moves (55) and has at least one rising ramp (56) perpendicular to the reeve direction (18) of element of construction (20.4),

Described rising ramp (51) moves to (13) back, wallboard inboard and is bearing on the wallboard inboard when assembling.

11. operating mechanism as claimed in claim 1 or 2 is characterized in that, described compression member injects the mobile parts (45) of direction (18) by at least two perpendicular to element of construction (20.3) to be formed,

Described parts (45) leave and are positioned at the position of relative expansion mutually under power load (50) effect, the size (63.1) in this position on moving direction is greater than the internal diameter of wall opening (11),

Described parts (45) overcome its power mutual roof pressure of loading and make size on moving direction less than the internal diameter of wall opening (11) simultaneously passing when wall opening (11) injects (18).

12. operating mechanism as claimed in claim 11 is characterized in that, described parts (45) have the lozenges (47) that injects direction (18) inclination to element of construction (20.3) on the profile position that it deviates from mutually,

Described lozenges (47) when injecting (18) with the border acting in conjunction of wall opening (11) and overcome its power load (50) roof pressure each other, up to lozenges since its power load (50) move apart mutually on wallboard inboard (13) perpendicular to reeve direction (18) again.

13. operating mechanism as claimed in claim 1 or 2 is characterized in that, the housing of described element of construction (20.2) is divided into the flange (36) and the cover (37) that passes wall opening (11) that are bearing on the wallboard outside (12),

Described compression member (42) has a breach (40), and outer valve jacket (37) passes and outstanding described breach at confined state.

14. operating mechanism as claimed in claim 13 is characterized in that, the compression member (42) of described element of construction (20.2) is made up of the one flat plate with a plurality of support foots (27), and described support foot is being bearing in after the assembling on the wallboard inboard (13).

15. operating mechanism as claimed in claim 1 or 2, it is characterized in that, described element of construction (20.1) bears a two stage bayonet type and moves (18 when assembling, 28), promptly at first be one and inject mobile (18), compression member this moment (22) passes wall opening (11) movably, is one then and moves (28), moves (18) perpendicular to the reeve of carrying out in advance and moves at this compression member (22).

16. operating mechanism as claimed in claim 15, it is characterized in that, described wall opening (11) is divided into two sections with different aperture widths, the i.e. bottom (33) of a wide top (32) and a relative narrower, the outline (29) of described compression member (22) is similar with perforate profile (19) shape.

17. operating mechanism as claimed in claim 16, it is characterized in that, be arranged on the transition position between the bottom (33) of the top (32) of wall opening and wall opening in support foot (27) part on the compression member (22) of described formation profile (29), another part is arranged on the exposed junction of the bottom (33) of wall opening.