DE102013000324B4 - Building opening shading device and axle cap module for the winding shaft of the building opening shading device - Google Patents

Abstract

Axle cap module for a winding shaft of a building opening shading device, e.g. a vertical awning or a roller shutter, with an inner sleeve (23) which can be inserted into the end of the winding shaft and fixed there, an extension piston (22) which is axially displaceable and can be locked or locked in different axial positions in the inner sleeve (23) and on it the end face projecting from the inner sleeve (23) for lateral support of the winding shaft has a corresponding supporting element (3) aligned with the winding shaft axis, and with a switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50), which is set up for switching between the different axial positions of the extension piston (22) relative to the inner sleeve (23) by an operator, characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) is designed as an automatic or at least partially automatic circuit which releases the extension element which is locked or locked in its inserted assembly position lbens (22) in response to the operator exerting pressure on the free end of the extension piston (22) locked in its inserted mounting position and then releasing the pressure, and / or the switching mechanism (21, 24, 25, 26, 27 , 29, 33, 34, 35, 50) is designed as an automatic or at least partially automatic circuit which locks or engages the extension piston (22) in the inserted assembly position at least after the operator has released the extension piston (22 ) in response to the fact that after pushing in the extension piston (22) from its extended working position into its inserted mounting position, the operator continues to exert pressure on the free end of the extension piston (22) located in its inserted mounting position and then releases the pressure again .

Description

The invention relates to an axle cap module for a hollow winding shaft of a building opening shading device, such as e.g. a vertical awning or a roller shutter according to the preamble of claim 1, and a building opening shading device provided with one or two such axle cap modules on its winding shaft.

Building opening shading device such as Roller shutters, Venetian blinds, Venetian blinds or vertical awnings have a winding shaft on which their curtain or belts that actuate the curtain are unwound or wound up to open and lower the curtain. At least in the case of roller shutters and vertical awnings, these winding shafts are usually manufactured as hollow shafts in which a tubular motor used for driving can be accommodated. In the case of roller shutters, the winding shafts usually have a hexagonal or octagonal cross-sectional shape, in the case of vertical awnings, on the other hand, a round cross-sectional shape, on which a welt groove is formed for inserting a welt that holds the awning fabric.

The winding shaft of such a building opening shading device is supported at its two front ends in corresponding building-side brackets. These building-side brackets are often on the side parts of a winding shaft housing, such as a roller shutter box provided, but can also be placed in a wall soffit cavity of the building. These brackets can for example be designed as a bearing journal or bearing ring.

In order to support the winding shaft there on the building side, the winding shaft must have end-side support members that match the building-side brackets, that is, for example, a bearing journal for a building-side bracket designed as a bearing ring. For this purpose, axle caps are usually pressed into the ends of the winding shaft which are open at the end and on which the corresponding support member of the winding shaft is provided, for example a bearing journal aligned with the winding shaft axis or a bearing ring aligned with the winding shaft axis.

In the simplest case, the axle caps are designed as cover-shaped elements and are pressed into the winding shaft on both sides. The winding shaft is then rigid in length and has a fixed bearing distance. However, this requires high manufacturing accuracy and complicates the assembly of the building opening shading device.

There are therefore also so-called resilient axle caps, in which an axle cap module has an inner sleeve which is pressed or can be pressed into the winding shaft and in which an extension spring is usually supported, by means of which an extension piston carrying the support member is accommodated in a resiliently length-adjustable manner in the axial direction of the winding shaft.

An example of a building opening shading device with such a generic axis cap module is the European patent EP 1 746 244 B1 refer to.

The one there 1 was here as 8th taken for explanatory purposes. You can see that with reference numerals 104 designated winding shaft on which a roller shutter curtain formed by hinged slats can be attached with its upper end. The winding shaft 104 is arranged in a roller shutter box, the side cover or side caps 102 are connected by jacket sheets, not shown. The side parts 102 have insertion pins on the underside, via which they are supported in side guide rail modules of the roller shutter and as holders for the winding shaft 104 acting journal 103 on which the winding shaft is received. In the 8th this is shown explosively, so that the winding shaft 104 there with a certain distance from the bearing journal 103 is drawn. The winding shaft 104 is designed as a hollow polygonal profile, in the ends of which axle cap modules sit, which support the bearing journal 102 have corresponding support members, for example corresponding bearing shells. On the one in the 8th shown end of the winding shaft 104 the axle cap module, designated overall by 105, is designed as a resilient axle cap, the inner sleeve of which is in the polygonal profile of the winding shaft 104 is pressed in and its spring-supported extension piston allows simplified installation compared to a winding shaft with rigid axle caps.

In order to secure the winding shaft against undesired retraction or pushing in of the extension piston, as can occur, for example, due to secondary loads, such as flexing work, resilient axle cap modules with a locking device are known to hold the extension piston at least in an extended working position against being pushed in against the extension direction to secure. According to the EP 1 746 244 B1 For example, a rider is provided, which can be inserted into a notch on the extension piston through a slot in the inner sleeve. In this case, insertion slots can be provided on the extension piston at different axial positions, so that the winding shaft has both an extension piston retracted for assembly purposes and one for the operation of the built-in winding shaft extended extension piston can be secured against undesired retraction or extension of the extension piston.

When assembling the winding shaft 104 becomes the winding shaft 104 with its resilient axle cap 105 on the assigned bearing journal 103 set at a certain angle to the horizontal. If no rider is set, the winding shaft with the support element at the free end of its extension piston must hit the bearing journal 103 pressed to push the extension plunger inwards. The winding shaft can then be pivoted into the horizontal and with its other end aligned with the bearing journal there 103 be scheduled. By removing the pressure on the resilient axle cap 105 the winding shaft is then also hung with the support member at its other end in the winding shaft holder there.

If the rider is set against it and holds the extension piston in the retracted position, the winding shaft can be attached with its opposite end, with the subsequent swiveling in of the winding shaft and alignment of the support member on the resilient axle cap module 105 on the trunnion 103 can be done comfortably without the technician having to apply pressure.

The difficulty then arises, however, that the rider has to be pulled off in order to place the winding shaft on the winding shaft holder on the resilient axle cap 105 release the necessary extension of the extension piston at the opposite end, while at the same time the winding shaft must be held in this position. If the mechanic drops the rider, the complete winding shaft installation must be restarted, so that two mechanics are often used to install the winding shaft. If the winding shaft is then mounted on both ends, the rider must then be reinserted into the notch that corresponds to the extended position of the extension piston, which is also associated with difficulties, since the distance between the two bearing pins 103 usually does not exactly correspond to the position of the notch and the extension plunger must therefore often be pushed in a bit again and must be held in this position before the rider can be attached.

The U.S. patent application US 2011/0192813 A1 on the other hand already discloses an axle cap module with an inner sleeve which can be inserted into the winding shaft and fixed there, the extension piston there being axially displaceable and received in different axial positions in the inner sleeve and having a support member B at its free end. In order to lock the extension piston in its various axial positions, an actuating ring is axially fixed but rotatably attached to the inner shell, which has inwardly projecting pins. The pins can be moved in the associated, axially extending guideways on the outer circumference of the extension piston and can be snapped onto a ratchet at different axial positions by turning the actuating ring.

Proceeding from this, the task arises to create an axle cap module for a winding shaft of a building opening shading device of the generic type and to develop such a building opening shading device in such a way that the assembly or disassembly of the winding shaft can be simplified and made safer.

This object is achieved with respect to the axle cap module with the features of claim 1, with respect to the building opening shading device with the features of claim 27.

In an axle cap module for a winding shaft of a building opening shading device, such as a vertical awning or a roller shutter which, in addition to an inner sleeve which can be inserted into the end of the winding shaft and fixed there, has an extension piston which is axially displaceable and can be locked or locked in several axial positions in the inner sleeve and on its end protruding from the inner sleeve for lateral support of the According to the invention, the axle cap module has an integrated switching mechanism which is set up for switching between the different axial positions of the extension piston with respect to the inner sleeve by an operator.

A switching mechanism provided integrally with the axle cap module offers the advantage that when assembling or disassembling the winding shaft for the switching process between the different axial positions of the extension piston, no parts have to be removed from the axis cap module in order to lock the extension piston in its current axial position This means that there is certainty of loss at this critical moment, so that the fitter can concentrate fully on the switching process and holding the winding shaft in the required position, which is in alignment with the bracket on the building side, without having to pay attention to this when actuating the circuit. not to drop a part necessary to lock the winding shaft again in its extended working position. A circuit or Switching mechanism naturally only allows a number of discrete switching positions, in the present case only a number of discrete axial positions of the extension piston relative to the inner sleeve. This also avoids that after the extension piston has been extended when the winding shaft is being assembled, the extension piston has to be pushed back into an axial position in which the parts or parts necessary for locking the position can or can be placed.

Furthermore, according to the invention, the switching mechanism is designed as a type of automatic or at least partially automatic circuit, which carries out a loosening of the extension piston locked or locked in its inserted mounting position in response to an operator exerting pressure on the free end of the extension piston locked in its inserted mounting position and then take the pressure off again. Preferably, the extension piston is subsequently extended into its extended working position, and preferably the final locking or engaging of the extension piston in its extended working position in response to the pressure exerted by the operator and subsequent pressure release to the free end of the locked or retracted installation position latched extension piston.

The operator or fitter therefore only has to mount the winding shaft after attaching the winding shaft with the extension piston pushed into the inner sleeve and secured in its mounting position on the associated bracket on the building side with the winding shaft the free end of the extension piston against the inside of the side cover of the winding shaft box or the press the holder or receptacle provided there and then remove the pressure again, so that the winding shaft already fitted on its other front end to the holder there can also be moved with the displaceable extension piston onto the associated holding element on the building side, for example slide on a bearing journal and lock the extension piston in this position.

As an alternative or in addition, the switching mechanism is further designed according to the invention as such an automatic or at least partially automatic circuit, which carries out the locking or latching of the extension piston into the inserted assembly position at least after the operator has released the extension piston, which is locked in its extended working position, in response to the fact that an operator, after pushing the extension piston in from its extended working position into its inserted mounting position, continues to exert pressure on the free end of the extension piston located in its inserted mounting position and then removes the pressure.

When disassembling the winding shaft - for maintenance purposes, for example - the operator or fitter then only has to release the free end of the extension piston against the inside of the side cover of the winding shaft box with the winding shaft after loosening the lock or locking the extension piston locked or locked in its extended working position or press the holder or receptacle provided there and then remove the pressure again in order to bring the extension piston into its inserted mounting position and to secure or lock it there. The winding shaft can then be swung out and removed.

The assembly of a winding shaft with such an axle cap module is thus greatly simplified compared to a winding shaft with a conventional axle cap module, because the fitter has both hands free when he engages and disengages the extension piston from his inserted mounting position and can thus hold the winding shaft with both hands while he is at Known axis modules must loosen or lock the fixing of the extension piston in the inserted mounting position, while at the same time holding the winding shaft.

In the building opening shading device according to the invention, the winding shaft is provided on at least one of its two ends with an axle cap module according to one of the preceding claims.

Advantageous developments of the invention are the subject of the dependent claims.

A relatively simple construction of the circuit or the switching mechanism and a relatively self-explanatory and easy-to-carry out assembly work sequence are obtained if the switching mechanism is set up for switching between an extended working position of the extension piston and a mounting position that is pushed further into the inner sleeve, the switching mechanism then only permits two axial positions or positions of the extension piston and thus forces the extension piston either into the extended working position or into the inserted mounting position. The switching mechanism is also advantageously set up to secure the extension piston against undesired loosening from the respectively set position, that is to say for locking or latching the extension piston in the respectively set position and naturally also for releasing the extension piston, which is secured against undesired loosening from the respectively set position, for switching to the other position.

As a control element for releasing the locking or locking of the extension piston which is locked or locked in its extended working position, the switching mechanism, which is then only partially automatic, can have a rotary switch which can be actuated by exerting a torque around the axis of the axle cap module and is captively received on the axle cap module. In an advantageous embodiment, the switching mechanism is thus designed as a partial automatic circuit which, in order to release the extension piston which is locked in its extended working position, has a rotary switch which can be actuated by exerting a torque around the axis of the axle cap module and is captively received on the axle cap module and otherwise only by exercising and removing one Pressure on the free end of the extension piston can be operated.

Various other physical features can be provided for the specific implementation of the switching mechanism functions explained above.

For example, the switching mechanism can have an axial pretensioning device which is preferably designed as an extension spring received in the inner sleeve and which biases the extension piston in its extension direction with one end and is supported on the inner sleeve side with the other end on the side facing away from the extension piston. As far as the axial displacement of the extension piston in the inner sleeve is concerned, the extension piston is pushed out into its extended working position by a force exerted by the axial pretensioning device, so that only the displacement in the direction of the inner sleeve by means of the operator onto the free end of the extension piston is to be carried out against the pressure exerted by the axial pretensioning device.

The switching mechanism can also have a locking element, which is in particular captively secured on the axle cap module, via which the extension piston can be locked against axial displacement or unlocked for axial displacement in its extended working position and / or via which the extension piston can be locked into its inserted mounting position and inserted from it Installation position can be disengaged. The locking element can between an arresting position, in which it locks the extension piston located in the extended working position against being pushed axially into the inner sleeve, and a release position, in which it unlocks the extension piston located in the extended working position for an axial pressing into the inner sleeve Can be arranged displaceably on the axis cap module.

Moving the locking element on the inner sleeve is easy to do even when the winding shaft is installed, that is to say in confined spaces. For this purpose, the above-mentioned rotary switch for releasing the locking of the extension piston located in the extended working position can engage the locking element in the inserted assembly position before the switching operation.

To carry out the displacement of the locking element in the circumferential direction or at least with a predominant directional component in the circumferential direction by the operator, the switching mechanism thus advantageously has a rotary switch which engages on the locking element and can be actuated by exerting a torque about the axis of the axle cap module. More preferably, the rotary switch is designed as an actuating ring, which is torque-transmitting, but preferably has a degree of freedom in the axial direction in connection with the locking element and is further preferably axially movable, but is secured against being pushed out over the free end of the inner sleeve on the inner sleeve. If the actuating ring also has a ring section which projects beyond the outer circumferential surface of the inner sleeve in the radial direction, it offers a technician an easily actuated switching element. In this sense, it is preferred if the ring section has teeth that are advantageously arranged on the circumference. The toothing can advantageously be a spline toothing suitable for a slotted screwdriver for ease of use.

In order to cause a displacement of the locking element in the opposite circumferential direction as when releasing the locking of the extension piston located in the extended working position, a locking pretensioning device acting on the locking bar in this peripheral direction can be provided, which on the one hand provides security against unintentional release of the locking mechanism in the extended position Extension piston located working position and on the other hand can be part of the automation of the switching mechanism. The switching mechanism therefore advantageously has a locking pretensioning device which pretensions the locking element into its locking position when the extension piston is in the extended working position. As for the displacement of the locking element in the circumferential direction or at least with predominantly directional component in the circumferential direction, then only the shifting in the release direction via the rotary switch must be carried out by the operator against the biasing force of the bolt pretensioning device, whereas a displacement in the opposite direction is automated by the bolt pretensioning device.

It has proven to be useful if the switching mechanism has a latching device which, when the locking element is moved from its locking position into its release position when the extension piston is in the extended working position, engages and then holds the locking element in its release position against the biasing force of the bolt biasing device . The operator can then press the extension piston into the inner sleeve by exerting pressure on its free end without at the same time having to hold the locking element in its release position against the pretensioning force of the locking pretensioning device acting in the circumferential direction. The latching device is preferably designed such that it holds the locking element during the entire working step in which the extension piston is pressed into the inner sleeve by the operator from its extended working position in order to latch in its inserted mounting position.

The shifting process from the extended working position to the inserted mounting position can be automated even further if the switching mechanism has an unlatching device which releases the latching device again when the operator pushes the extension piston out of its extended working position into the inner sleeve beyond the inserted mounting position. At the end of the working step, in which the extension piston is pressed into the inner sleeve by the operator from its extended working position beyond the inserted mounting position, the locking pretensioning device then exerts its pretensioning force on the locking element again, whereby it moves in the circumferential direction and thereby into the inserted mounting position can be engaged even though the fitter only exerts a compressive force acting in the axial direction on the extension piston.

According to an advantageous variant of the invention, the switching mechanism of the axle cap module has a guideway formed on the extension piston. The guideway consists of interconnected path sections, a number of which run in the circumferential direction or with a predominant directional component in the circumferential direction and a further number in the axial direction or with a predominant directional component in the axial direction. The switching mechanism also has a shift gate which is formed on the inner sleeve and which is rectilinear in the circumferential direction or with a predominant directional component in the circumferential direction, as well as a captive locking element received on the axle cap module with a degree of freedom of displacement along the shift gate. The locking element is slidably engaged with the guideway and also with the shift gate. The guideway is advantageously formed in a circumferential surface and the extension piston is accommodated in the inner sleeve without a degree of freedom of rotation, while the locking element is displaceably accommodated on the axle cap module in the shift gate which is straight in the circumferential direction or with a predominant directional component in the circumferential direction.

By engaging in the at least predominantly circumferential shift gate, the locking element is at least largely axially fixed with respect to the inner sleeve on the axle cap module, but it is possible to shift the locking element in the circumferential direction along the shift gate and thus in the guideway. By engaging in the guideway, the locking element, which is at least largely axially fixed with respect to the inner sleeve on the axle cap module, can either also hold the extension piston axially fixed on the inner sleeve when it engages in a circumferential directional or predominantly directional component in the circumferential direction of the guideway, or the extension piston for release a displacement in the axial direction or with a predominant directional component in the axial direction if it engages in a path section of the guideway running in the axial direction or with a predominant directional component in the axial direction.

According to an alternative advantageous variant of the invention, the guideway of the switching mechanism is provided on the inner sleeve, for example on an inner circumferential surface of the inner sleeve. The guideway in turn consists of interconnected path sections, a number of which run in the circumferential direction or with a predominant directional component in the circumferential direction and a further number in the axial direction or with a predominant directional component in the axial direction. The shift gate of the switching mechanism is then molded onto the extension piston, for example molded into an outer circumferential surface, and in turn runs in a straight line in the circumferential direction or with a predominant directional component in the circumferential direction. The locking element is in turn captive and with a degree of freedom of movement along the shift gate, but axially fixed relative to the extension piston Axle cap module is added and is then slidably engaged with the guideway and the shift gate. The guideway is advantageously formed in a circumferential surface and the extension piston is accommodated in the inner sleeve without a degree of freedom of rotation, while the locking element is displaceably accommodated on the axle cap module in the shift gate which is straight in the circumferential direction or with a predominant directional component in the circumferential direction.

By engaging in the at least predominantly circumferential shift gate, the locking element is at least largely axially fixed with respect to the extension piston on the axle cap module, but shifting of the locking element in the circumferential direction along the shift gate and thus in the guideway is possible. By engaging in the guideway, the locking element, which is at least largely axially fixed relative to the extension piston on the axle cap module, can either also hold the extension piston axially fixed on the inner sleeve when it engages in a circumferential directional direction or with predominantly directional components in the circumferential direction of the guideway, or the extension piston for release a displacement in the axial direction or with a predominant directional component in the axial direction if it engages in a path section of the guideway running in the axial direction or with a predominant directional component in the axial direction.

According to a third alternative advantageous variant of the invention, the guideway of the switching mechanism is also provided on the inner sleeve. The locking element, on the other hand, is fixedly attached to the extension piston and, in turn, is slidably engaged with the guide track therein, the extension piston being accommodated in the inner sleeve with a degree of freedom of rotation.

The locking element is thus fixed in place and thus axially fixed to the extension piston, but displacement of the locking element in the guideway is possible because the extension piston - and thus the locking element attached to it - is accommodated in the inner sleeve with a degree of freedom of rotation. By engaging in the guideway, the locking element fixed to the extension piston can either hold the extension piston axially fixed to the inner sleeve when it engages in a circumferential directional portion of the guideway, or with the predominant directional component, or the extension piston for displacement in the axial direction or with Release predominant directional component in the axial direction if it engages in a path section of the guideway running in the axial direction or with a predominant directional component in the axial direction. The guideway is advantageously designed as an opening through a peripheral wall of the inner sleeve, which is penetrated by the locking element. As a result, the locking element - and with the locking element the entire extension piston - can be gripped and moved by a fitter, the position of the locking element in the guideway being directly readable.

In the two variants mentioned first, the locking element can only be displaced in the shift gate if it is located in a path section of the guideway running in the circumferential direction or with a predominantly directional component in the circumferential direction. When the locking element is shifted in the switching alley, it is simultaneously shifted along this path section. In the third variant, the locking element, together with the extension piston attached to it, can only be displaced in the circumferential direction or with a predominant directional component in the circumferential direction if it is located in a circumferential or predominantly directional component in the circumferential direction of the guideway.

Since this section of the track at least one in Connecting the axial direction or with a predominantly directional component in the axial direction of the web section, the extension piston can be locked in the position or released for displacement that corresponds to the axial position of the circumferential direction or with a predominant directional component in the circumferential direction: if the extension piston is to be locked, this will be done Locking element moved into a branchless section of the web section running in the circumferential direction or with a predominant directional component in the circumferential direction. If, on the other hand, the extension piston is to be released for displacement, the locking element in this path section is displaced towards the confluence of the path section running in the axial direction or with a predominantly directional component in the axial direction.

During a subsequent axial displacement of the extension piston with respect to the inner sleeve, the locking element accommodated in the guide track with a degree of freedom of displacement moves along the path section running in the axial direction or with a predominant directional component in the axial direction. At the other end of this path section running in the axial direction or with a predominant directional component in the axial direction, a path section running in the circumferential direction or with a predominant directional component in the circumferential direction can then be connected. The axial position of the two web sections running in the circumferential direction or with a predominant directional component in the circumferential direction or the axial length of the web section running in the axial direction or with the predominant directional component connecting these two web sections in the axial direction can then be selected such that the axial position of the one, in The circumferential direction or with a predominantly directional component in the circumferential direction of the web section corresponds to the extended working position of the extension piston and the axial position of the other, in the circumferential direction or with a predominant directional component in the circumferential direction of the extended web position of its inserted assembly position.

If the extension piston should also be able to be fixed in a number of further axial intermediate positions between its fully extended working position and its fully inserted mounting position, then a number of further, from the path section running in the axial direction or with a predominant directional component in the axial direction between the two aforementioned, in In the circumferential direction or with predominantly directional components in the circumferential direction of the web sections branching, in the circumferential direction or with the predominant directional component in the circumferential direction.

The fact that the locking element is held captively on the axle cap module ensures on the one hand that the locking element cannot be lost during the transport of the building opening shading device. On the other hand, it is achieved that the locking device can be easily operated during assembly and disassembly of the winding shaft, since there is no fear of falling.

The sequence of the work steps to be carried out by a fitter during the assembly / disassembly of the winding shaft on the building can be specified by specifying the course of the path sections of the link guide, i.e. a workflow which cannot be avoided and which leads to increased occupational safety. The fixing of the locking element also serves as a protection against loss, so that the locking element cannot be lost during the transport of the building opening shading device and can be easily operated during installation, since there is no fear of falling.

The guideway is preferably formed on the outer circumference of the extension piston, and the shift gate is designed as an opening through a wall section of the inner sleeve in the region of the guideway. The locking element can then be arranged on the inner sleeve so as to be displaceable in the circumferential direction and have a sliding block with which it engages through the opening and engages in the guideway. The opening forming the shift gate is preferably congruent with an extension piston in the extended working position over a circumferential or at least predominant directional component in the circumferential direction of the guideway, so that the sliding block can then be displaced along this path section.

Advantageously, the guide track has track sections connected to one another to form a closed loop, so that the locking element can be moved through the loop of the guide track in the manner of a hysteresis curve along a direction defined by the various pretensioning, latching and unlatching devices of the switching mechanism. For this purpose, the guideway has two path sections running at least predominantly in the axial direction on different circumferential coordinates, but at least essentially corresponding axial coordinates, each of which ends at its ends in an at least predominantly circumferential direction and are thereby connected to one another.

Preferably, a linear path section running at least predominantly in the circumferential direction connects the two at least predominantly in the axial direction extending track sections at the axial height of the extended working position with each other and opens at one end into one of the two at least predominantly axial track sections, whereas with its other end it protrudes beyond the junction of the other at least predominantly axial track section. If the locking element is located at the projecting, blind end of the two at least predominantly axial path sections connecting one another at the axial height of the extended working position and rectilinearly at least predominantly circumferentially extending path section under pretension by the bolt pretensioning device, the extension piston is locked. If the locking element is located there at its other end, for example held there by the latching device against the pretensioning force of the locking pretensioning device, then it can be displaced along the path section which opens at least predominantly in the axial direction.

Furthermore, the two at least predominantly axial path sections at the axial level of the inserted assembly position each lead to an at least predominantly circumferential path section, which in turn are connected to one another via an intermediate, approximately U-shaped path section opening towards the free end of the extension piston . To lock the extension piston into its inserted assembly position, the axial length of one U-leg must first be overcome, after which the bolt pretensioning device and the axial pretensioning device pull the locking element into a latched position on the U-base. To disengage the extension piston from its inserted assembly position, the axial length of the other U-leg must first be overcome, after which the locking pretensioner pulls the locking element into the axial section of the track through which the locking element is moved into its extended working position by the force of the axial pretensioning device .

Advantageous designs of the guideway are the subject of further subclaims.

Thus, the guideway advantageously has an at least substantially circumferentially extending first track section with a blind locking and a release end, and a second track section that connects to the first track section at the release end and is at least substantially axially from the release end in the direction of the outside Front end of the extension piston extends.

If the sliding block of the locking element is located at the blind locking end, i.e. at the end of a guide groove that forms the first path section, i.e. at the blind end of a switching alley designed as a dead end, the extension piston pushed out into its working position is locked because the link bolt strikes the circumferential groove walls when an attempt is made to push the extension piston in. The locking advantageously acts not only against the extension piston being pushed in, but also because of the track walls of the first track section which delimit the link bar on both sides, at the same time as a safeguard against the extension piston falling out of the inner sleeve, i.e. against an undesirable axial displacement beyond the working position in the extension direction.

This locked basic position forms the working position of the winding shaft, in which it can perform its function in the building opening shading device, without fear, for example, in the case of transverse forces, which occur sporadically in the case of wind loads, that the extension piston is pressed into the inner sleeve and the winding shaft is thereby itself triggers with one of its end supports from the assigned holder on the building side.

If, on the other hand, the locking mechanism is to be released for assembly or disassembly purposes because the extension piston is to be pressed into the inner sleeve, the locking element on the inner sleeve can be displaced by an angle such that the sliding block at the beginning of the second, axially towards the front end of the extension piston extending web section is located and thus a pushing the extension piston into the inner sleeve is possible until an inserted position is reached. To mount the winding shaft in the associated winding shaft box, the winding shaft can then be attached at an angle to the other end of the building, which is not provided with a resilient axle cap or the axle cap module, and then with its end provided with the resilient axle cap in the horizontal is pivoted so that the support member on the extension piston is aligned with the associated holder on the building side before the extension piston is pushed out again into its working position and is thereby supported on the holder on the building side with the support member.

A third web section, which extends at least essentially in the circumferential direction, can advantageously adjoin the end of the second web section facing away from the first web section. The sliding block can then slide into the third track section when the end of the second track section facing away from the first track section is released, so that the extension piston is released for axial displacement in the inner sleeve when the locking element at the end of the second track section opening into the third track section is located, and is locked against axial displacement out of the inner sleeve if the locking element in the third path section is outside the mouth region of the second path section.

The advantages of a third web section running from the second web section in the same direction as the first web section can be seen in particular in cooperation with the advantageously provided locking pretensioning device, which prestresses the locking element in the direction toward the arrester of the first web section and accordingly also from the junction of the second web section pulls away into the third section of the railway.

The bolt pretensioning device can extend around a wall section in the circumferential direction Tension spring extending around the inner sleeve, for example an annular spring. The tension spring can engage with one end on the locking element and with its other end on a spring fastening provided on the inner sleeve at the axial height of the locking element.

The latching device can have a longitudinal rib extending on the outer circumference of the inner sleeve in the axial direction at the edge of the shift gate on the side of the release end of the first track section, and a snap hook provided on the rotating ring connected to the locking element and projecting radially inwards, which snaps onto the longitudinal rib , when the locking element is moved along the first path section towards the release end.

The unlocking device can then comprise a longitudinal rib widening on the side of the longitudinal rib facing away from the shift gate, which is provided at an axial height on the extension piston which corresponds to the position of the snap hook when the locking element reaches the other end of the second track section, and one from the outer circumference of the Inner sleeve inclined to the axial direction ramp leading to the widening of the longitudinal ribs.

At the end of the third web section that extends at least substantially in the same direction, but with a shorter length than the first web section, that is at the end facing away from the second web section, a fourth web section that extends at least substantially axially inward with a shorter length than the second web section can follow, which opens into a fifth path section extending at least substantially in the same direction, but with a shorter length than the first path section. The fifth track section can in turn open into a sixth track section that extends at least substantially axially toward the end face with a shorter length than the second track section, on which a seventh track section that extends at least substantially in the same direction, but with a shorter length than the first track section connects, which is connected to the first track section via a further, eighth track section, the eighth track section opening into the first track section in the region between the blind arrester and the release end.

After the extension piston has been pushed in beyond its inserted mounting position (i.e. when the locking element reaches the end of the second track section), the locking element is then pulled by the tension spring of the locking pretensioner to the end of the third track section. The ejection spring of the axial pretensioning device then presses the extension piston outward, so that the locking element reaches the fourth, axially inwardly extending web section and is in turn pulled there along the fifth web section in the circumferential direction via the tension spring. At the end of the fifth path section, the locking element is then engaged by the pulling force of the extension spring against undesired shifting into the sixth, axially outward-running path section, and secured by the tension force of the tension spring against undesired running back to the beginning of the fifth path section.

In this position of the locking element, the extension piston is in its inserted assembly position, since the fourth web section running in the axial direction preferably has a significantly shorter length than the second web section. If the fitter has pivoted the winding shaft into the winding shaft box with the locking element engaged in this position and brought it to the associated holders on the side panels of the winding shaft box on both sides with the support members, he can, after actuating a ballpoint pen, by applying slight pressure to the winding shaft the front end of the extension piston release the lock, or disengage the locking element, which then slides along the sixth axially outward path section, until at the end of the sixth path section the seventh, again running in the circumferential direction, into which it then passes through again the tension spring of the bolt pretensioner is pulled. In order to release the extension bolt from the inserted mounting position or to disengage the locking element, pressure that is to be exerted on the end face of the winding shaft or on the free end of the extension piston by the installer is necessary. The fitter has both hands free to use the winding shaft to press the free end of the extension piston against the side wall of the building (i.e. the holder there) because the switching mechanism automatically carries out all other necessary movements of the locking element.

The end of the seventh path section can lie approximately on the circumferential coordinate of the blind locking end of the first path section and, for example, can be connected to the first path section in the region between the blind arrester and the release end via an eighth path section inclined to the axial direction on the circumference of the extension piston . The extension piston is then pushed out by the force of the extension spring and at the same time the locking element or the sliding block of the locking element is displaced along the eighth path section until the extension piston reaches its fully extended working position and the sliding block returns to the first section of the track. There the tension spring pulls the locking element and thus the sliding block back to its starting point at the blind stop of the first track section.

A one-off shifting of the locking element during the movement from the blind arrester of the first track section to its release end is therefore sufficient to be able to move to all important approach positions during the assembly / disassembly of the winding shaft simply by pressing on the free end of the extension piston. The fitter only has to work on the axle cap module when locking or releasing the extended piston. All other steps can be done by pressing the winding shaft against the side panel or side wall of the building.

• 1 eine Explosionsdarstellung eines Achskappenmoduls mit federnder Achskappe gem. einer Ausführungsform der Erfindung;
• 2 eine perspektivische Ansicht des in 1 gezeigten Achskappenmoduls;
• 3 eine perspektivische Ansicht des in einer Spreizbuchse aufgenommenen Trägerstutzens des in der 1 gezeigten Achskappenmoduls bei abgenommenem Betätigungsrad und Riegelelement;
• 4 eine Stirnansicht des innen gelegenen Axialendes des in 1 gezeigten Achskappenmod u ls;
• 5 eine weitere perspektivische Ansicht des in 3 gezeigten Trägerstutzens aus einem anderen Blickwinkel;
• 6 eine perspektivische Ansicht eines Verlängerungskolbens mit einem Riegelelement des in 1 gezeigten Achskappenmoduls;
• 7 eine weitere perspektivische Ansicht des in 3 und 5 gezeigten Trägerstutzens aus einem weiteren Blickwinkel; und
• 8 eine Ansicht einer Gebäudeöffnungsverschattungsvorrichtung gemäß dem Stand der Technik.

An embodiment of the invention is explained in more detail below with the aid of schematic drawings. Show it:

• 1 an exploded view of an axle cap module with resilient axle cap acc. an embodiment of the invention;
• 2nd a perspective view of the in 1 axle cap module shown;
• 3rd a perspective view of the support socket received in an expansion sleeve in the 1 Axle cap module shown with the actuating wheel and locking element removed;
• 4th a front view of the inner axial end of the in 1 shown axle cap model;
• 5 another perspective view of the in 3rd shown support neck from a different perspective;
• 6 a perspective view of an extension piston with a locking element of the in 1 axle cap module shown;
• 7 another perspective view of the in 3rd and 5 shown support neck from a further angle; and
• 8th a view of a building opening shading device according to the prior art.

First, reference is made to the 1 . The axle cap module shown is designed as a resilient axle cap and consists of an expansion sleeve 1 , an inner sleeve 23 , an extension piston 22 , an extension spring 21st , a locking element 25th , a tension spring 24th and a rotating ring or operating wheel 26 . The inner sleeve 23 , the extension piston 22 , the extension spring 21st , the locking element 25th who have favourited Tension Spring 24th and the control wheel 26 are there like that 2nd can be removed to form a support socket, the total with 2nd is designated and one on the extension piston 22 molded support member 3rd via which a winding shaft equipped with the axle cap module shown is supported on a bracket on the building side.

When installing the axle cap module, the expansion bushing 1 and the support neck 2nd inserted into the winding shaft, which is open at the end, and then spread apart there, the support connector 2nd serves as a turning tool and the inner sleeve 23 includes. Again 2nd the expansion bushing can be seen 1 a continuous slit along its length 8th , 9 and can thereby be expanded or expanded and thus serves to fix the inner sleeve 23 in the winding shaft. The expansion of the expansion sleeve 1 in the winding shaft there is a wedge gear 5 , 6 . The wedge gear comprises on the one hand on the outer circumference of the inner sleeve 23 provided wedge sections 5 and on the other hand the wedge sections 5 assigned expansion wedge sections 6 on the inner circumference of the expansion bush 1 . When expanding the longitudinal slot 8th , 9 are outer peripheral ribs 10th that as press fit sections 10th serve, pressed in the winding shaft against the inner contour of the winding shaft. Through a circulation collar 4th is a certain security against unwanted, too wide compression of the expansion sleeve 1 given when inserted into the winding shaft. Furthermore, one is best in the 3rd and 4th Security device to be recognized 11 , 12 to secure the support neck 2nd or the inner sleeve 23 provided in the press fit caused by the applied torque in the winding shaft. The safety device 11 , 12 includes over the inner circumference of the expansion sleeve 1 distributes three gear areas 12 with teeth protruding inwards 17th , The toothing areas evenly over the inner circumference of the expansion bush 1 are distributed. On the outer circumference of the support neck 2nd are 3 counter-tooth areas 11 evenly, i.e. approximately at a 60 ° angle to each other distributed over the outer circumference, in which the teeth 17th assigned counter teeth 16 project outwards. On the inner sleeve 23 is also an annular circumferential stop 14 provided an inner shoulder, not shown, in the expansion sleeve 1 is assigned to the desired axial end position of the inner sleeve 23 in the expansion sleeve 1 define.

Alternatively, of course, it is also possible instead of in the inner sleeve 23 and the expansion sleeve 1 split sleeve 1 , 23 to use a one-piece inner sleeve which, as is customary in the prior art, is pressed into the winding shaft.

In the in the expansion socket 1 anchorable inner sleeve 23 of the support neck 2nd is the extension piston 22 added to the front end protruding from the winding shaft in the installed state next to the support member or bearing journal 3rd an attack section formed as a hexagon socket 7 which is accessible to a fitter even when the axle cap module is mounted in the winding shaft.

Furthermore, the axle cap module or the support socket 2nd an integrated switching mechanism 21st , 24th , 25th , 26 , 27th , 29 , 33 , 34 , 35 , 50 with which the extension piston 22 can be switched back and forth between two axial switch positions, an extended working position and an inserted mounting position and both positions can be fixed.

The switching mechanism 21st , 24th , 25th , 26 , 27th , 29 , 33 , 34 , 35 , 50 includes an axial pretensioner 21st for that in the inner sleeve 23 extension piston 22 . This is at the axial inner end of the inner sleeve 23 a lid 20th clipped in the 3rd is not shown, but there are the clip recesses 13 can be seen on which the lid 20th with his in 5 shown locking projections 32 is clipped in. On the lid 20th a ring spring is supported 21st starting as an extension spring 21st and thus as an axial pretensioning device 21st for that in the inner sleeve 23 extension piston 22 serves at the axial outer end of the bearing pin serving as a support member 3rd is provided.

The switching mechanism also includes 21st , 24th , 25th , 26 , 27th , 29 , 33 , 34 , 35 , 50 one on the extension piston 22 molded on the outer circumference, in the 1 indicated and in detail the 6 guideway to be removed 27th , and that of the guideway 27th assigned locking element 25th as well as the rotating ring or the operating wheel 26 .

The locking element 25th is at the axial outer end of the inner sleeve 23 in the circumferential direction in one of the guideway or link guide 27th corresponding angular segment is movably received and has a sliding block 28 on with it at one as a shift alley 50 ( 7 ) serving breakthrough 50 the inner sleeve 23 engages and engages with the guideway 27th stands.

The locking element 25th is about one of the switching mechanics 21st , 24th , 25th , 26 , 27th , 29 , 33 , 34 , 35 , 50 included bolt pretensioning device 24th , 35 in the circumferential direction in the 6 pre-tensioned locking position shown. The bolt pretensioner 24th , 35 includes a tension spring 24th ( 1 ) with one end on an eyelet post 36 ( 7 ) on the locking element 25th is attached and with its other end on one 1 and 3rd to be removed, on the inner sleeve 23 provided at the axial level of the locking element, serving as a spring fastening spring fastening post 35 , which has a corresponding eyelet.

Via the control wheel 26 the locking element 25th in the circumferential direction in the backdrop guide 27th move. The control wheel 26 is in the 3rd not shown. However, one can see there on the top of the bearing journal 3rd facing side the locking element 25th with a latch 18th (see also 6 ) on which the control wheel 26 on the locking element 25th is clipped on. How again 7 shows the operating wheel 26 on a sleeve-shaped section with which it is axially movable (see arrow with double point in 7 ) on the inner sleeve 23 is included, a guide rail section extending in the axial direction 37 with two radially projecting guide walls and a cover wall connecting the guide walls on the outside, which is a window 38 having. The locking lug or locking lug of the locking element 25th reaches into the window or the recess 38 on the top wall of the guide rail section 37 .

Here is the control wheel 26 via clip projections distributed on its cylindrical inner circumference 31 ( 5 ) on the in 3rd to see all-round collar 19th at the axial outer end of the inner sleeve 23 clipped on and therefore captive on the inner sleeve 23 added. At the same time, the locking element 25th covering operating wheel 26 and by clipping the control wheel 26 with the inner sleeve 23 and with the locking element 25th the locking element 25th captively attached to the axle cap module.

By turning the control wheel 26 on its circumferential spline suitable for screwdriver engagement 30th can the locking element 25th with the extension piston pushed out 22 from one of the extension pistons 22 locking position in an extension piston still pushed out 22 the extension piston 22 no longer be locked position. The locking element slides 25th with its inward-looking sliding block 28 in the backdrop 27th on the outer circumference of the extension piston 23 in a first path section leading in the circumferential direction 41 along. The first railway section 41 extends from a blind arrester on whom the sliding block is attached 28 in the 6 to a release end at which the first path section 41 in a second path section leading outward in the axial direction 42 flows.

The tension spring or return spring 24th pulls the locking element 25th always in Direction to its locking position at the blind end of the first track section 41 . On the control wheel 26 however, is how particular 5 shows an inward-facing snap hook acting against this direction 29 provided that over a corresponding longitudinal rib 33 on the outer circumference of the inner sleeve 23 engages when the locking element 25th to the second lane section 42 opening end of the first track section 41 is pulled by the control wheel 26 is turned in the appropriate direction. The snap hook 29 and the longitudinal rib 33 thus form a locking device 29 , 33 as part of the switching mechanism 21st , 24th , 25th , 26 , 27th , 29 , 33 , 34 , 35 , 50 .

The extension piston in its extended working position 22 can thus be reached after reaching the release end of the first path section 41 Push in without the tension spring 24th the locking element 25th or the sliding block back to the blind stop of the first track section 41 can pull. If the extension piston 22 is pressed with its axial outer end against a surface, such as the side wall of a box panel, also the actuating wheel 26 and above that the locking element 25th with pressed inwards. The inward-looking sliding block 28 of the locking element 25th is along the second path section running in the axial direction 42 the scenery 27th moved outwards until there against the biasing force of the tension spring 24th latched snap hooks 29 on the control wheel 26 out of engagement with the longitudinal rib or shoulder 33 on the outer circumference of the inner sleeve 23 reached.

Around the locking hook 29 of the control wheel 26 out of engagement with the longitudinal rib 33 to bring is on the track 27th or the locking element 25th opposite side of the longitudinal rib 33 a ramp 34 provided that inclined to the axial direction on a longitudinal rib widening 51 to the radial height of the longitudinal shoulder 33 leads so that the locking hook 29 with its locking nose out of engagement with the longitudinal rib 33 arrives and the backdrop bolt 28 again along the circumferential direction by the tension spring 24th pulled into a third track section 43 the scenery 27th can move.

The force of the extension spring 21st presses on the extension piston 22 and pushes it outwards so that the sliding block 28 along a fourth, axially extending path section 44 opposite the extension piston 22 migrates axially inward, where then a fifth web section, again running in the circumferential direction 45 connects through which the tension spring 24th the locking element 25th pulls through until it ends at the fifth track section 45 on the local axial section and a sixth section 46 defining wall. Because the force of the extension spring 21st the extension piston 22 the extension piston pushes outwards 22 locked here so that the winding shaft with the extension piston locked in the inserted assembly position 22 can be inserted into the winding shaft box or removed from the box. The fitter has to lock or unlock the extension piston 22 not on the extension pistons 22 long, just a pressure on the free end of the extension piston 22 exercise and then take away again. So he has both hands free to handle the winding shaft and can use the winding shaft at the same time to hit the free end of the extension slide 22 to press.

After attaching the support member 3rd on the associated box-side bracket or - in the case of removal of the winding shaft - after swiveling the other end of the winding shaft out of the box can then be applied to the extension piston by briefly pressing the winding shaft 22 the lock can be released, then the link bolt 28 along a sixth track section 46 the scenery 27th is guided outwards in the axial direction and there again by spring force of the tension spring 24th in the circumferential direction through a seventh path section 47 the scenery 27th is pulled.

The seventh section of the railway 47 the scenery 27th flows into an eighth track section 48 the scenery 27th , which is first in the axial direction, then at an angle to the axial direction back to the first path section 41 extends so that the spring force of the extension spring 21st can extend the extension piston in its fully extended working position, the sliding block 28 and with it the locking element 25th back to the first section of the railway 41 slides. The tension spring pulls there 24th the backdrop bolt 28 back in his in the 6 Shown, locking starting position on the blind locking of the first track section 41 without the fitter having to do anything.

Around the extension piston 22 in the inner sleeve 23 The inner sleeve has to be fixed in the circumferential direction 23 two in the 3rd and 4th longitudinal ribs protruding radially inwards 15 on that in corresponding longitudinal grooves 52 on the extension piston 22 intervene, which in particular the 6 can be seen.

Of course, deviations from the variants shown are possible without departing from the basic idea of the invention.

Claims (27)

Axle cap module for a winding shaft of a building opening shading device, such as a vertical awning or a roller shutter, with an inner sleeve (23) that can be inserted into the end of the winding shaft and fixed there, an extension piston (22) that is axially displaceable and can be locked or locked in different axial positions in the inner sleeve (23) is accommodated, and on its end face protruding from the inner sleeve (23) for lateral support of the winding shaft has a corresponding support member (3) aligned with the winding shaft axis, and with a switching mechanism (21, 24, 25, 26) integrated in the axle cap module , 27, 29, 33, 34, 35, 50) which is set up by an operator for switching between the different axial positions of the extension piston (22) relative to the inner sleeve (23), characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) is designed as an automatic or at least partially automatic circuit, which is a Loosening the extension piston (22) locked or locked in its inserted mounting position in response to the operator exerting pressure on the free end of the extension piston (22) locked in its inserted mounting position and then releasing the pressure, and / or the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) is designed as an automatic or at least partially automatic circuit, which locks or locks the extension piston (22) into the inserted mounting position at least after one to be carried out by the operator Release the extension piston (22) locked in its extended working position in response to the fact that the operator continues to press the free end of the extension piston located in its inserted mounting position after pushing the extension piston (22) out of its extended working position into its inserted mounting position s (22) and then takes the pressure off. Axle cap module after Claim 1 , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) for switching between at least two axial positions, an extended working position of the extension piston (22) and one in contrast in the The inner sleeve (23) is pushed into the assembly position and is also set up for locking or latching the extension piston (22) in the respective position, the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) the extension piston (22) forces either into the extended working position or into the inserted mounting position. Axle cap module after Claim 1 or 2nd , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50), which is designed as an automatic or at least partially automatic circuit, also has an extension piston which is locked or locked in its inserted mounting position ( 22) then extending the extension piston (22) into its extended working position in the extended working position in response to the operator exerting the pressure on the free end of the extended piston (22) locked in its inserted mounting position and then releasing the pressure. Axle cap module after Claim 3 , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) designed as automatic or at least partially automatic switching also responds to the final locking of the extension piston (22) in the extended working position executes that the operator exerts the pressure on the free end of the extension piston (22) which is locked in its inserted mounting position and then removes the pressure again. Axle cap module after Claim 1 , 2nd , 3rd or 4th , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) is designed as a partially automatic circuit which, for releasing the extension piston (22) locked in its extended working position, engages one by exerting a Torque can be actuated around the axis of the axle cap module, has rotary switches (26) received on the axle cap module in a captive manner and can otherwise be operated solely by exerting and removing pressure on the free end of the extension piston (22). Axle cap module according to one of the preceding claims, characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) is an axial pretensioning device (21) designed as an ejection spring (21) accommodated in the inner sleeve (23). 21), which biases the extension piston (22) in its extension direction with its one end and is supported with its other end on the side of the inner sleeve on the side facing away from the extension piston (22). Axle cap module according to one of the preceding claims, characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) has a locking element (25), in particular captively secured on the axle cap module, via which the Extension piston (22) can be locked against axial displacement in its extended working position or unlocked for axial displacement and / or via which the extension piston (22) can be locked into its inserted mounting position and can be locked out of its inserted mounting position. Axle cap module after Claim 7 , characterized in that the locking element (25) between a locking position, in which it locks the extension piston (22) in the extended working position against axial pushing into the inner sleeve (23), and a release position, in which it is in the extended working position located extension piston (22) for an axial pushing into the inner sleeve (23) unlocked, is arranged displaceably in the circumferential direction on the axle cap module. Axle cap module after Claim 7 or 8th , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) for performing the displacement of the locking element (25) in the circumferential direction or at least with a predominant directional component in the circumferential direction by the operator has on the locking element (25) acting by exerting a torque about the axis of the axle cap rotary switch (26), namely an actuating ring (26) which transmits torque, but with a degree of freedom in the axial direction in connection with the locking element (25) and furthermore axially movable, but secured against being pushed out over the free end of the inner sleeve (23), is received on the inner sleeve (23), the actuating ring (26) having a circumferential, toothed ring section (1) projecting radially beyond the outer peripheral surface of the inner sleeve (23). 30), which has a spline suitable for a slotted screwdriver. Axle cap module after Claim 7 , 8th or 9 , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) has a locking pretensioning device (24, 35) which the locking element (25) when the extension piston is in the extended working position (22) biased into its locking position. Axle cap module after Claim 10 , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) has a latching device (29, 33) which, when the locking element (25) is in the extended working position located extension piston (22) is shifted from its locking position into its release position, engages and then holds the locking element (25) against the biasing force of the locking biasing device (24, 35) in its release position. Axle cap module after Claim 11 , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) has an unlocking device (34) which releases the locking device (29, 33) when the extension piston (22 ) is pushed into the inner sleeve by the operator from his extended working position beyond the inserted mounting position, so that the pretensioning device (24, 35) at the end of the work step in which the extension piston (22) is pushed out of the extended operating position by the operator beyond the inserted mounting position is pressed into the inner sleeve, exerts its prestressing force on the locking element (25). Axle cap module according to one of the Claims 6 to 12 , characterized in that the switching mechanism (21, 24, 25, 26, 27, 29, 33, 34, 35, 50) has a guide track (27) formed on the extension piston (22) and comprising track sections (41, 42, 43 , 44, 45, 46, 47, 48), of which a number runs at least predominantly in the circumferential direction and a further number at least predominantly in the axial direction, as well as a switching gate (50.) Formed on the inner sleeve (23) and running at least predominantly in the circumferential direction ), the locking element (25) being captively and with a degree of freedom of movement received along the shift gate (50) on the axle cap module and with the guide track (27) and also with the shift gate (50) in each case in a positively guided manner. Axle cap module after Claim 13 , characterized in that the shift gate (50) on the inner sleeve (23) is formed as an opening (50) in a wall section covering the guideway (27), the locking element (25) being displaceable in the circumferential direction on the outer circumference of the inner sleeve (23) has a received body, and a guide bar (28) which penetrates the opening (50) and with which it engages in the guideway (27), and the opening (50) forming the shift gate (50) is located when the extension piston () is in the extended working position ( 22) is congruent over a web section (41) running in the circumferential direction or at least with a predominant directional component in the circumferential direction. Axle cap module according to one of the Claims 6 to 12 , characterized in that the switching mechanism has a guideway formed on the inner sleeve from interconnected path sections, a number of which runs at least predominantly in the circumferential direction and a further number at least predominantly in the axial direction, and one formed on the extension piston, at least predominantly in the circumferential direction or with predominant directional component Shifting lane running in the circumferential direction, the locking element being captively and with a degree of freedom of displacement received along the shifting lane on the axle cap module and being in a positively guided manner with the guideway and also with the switching lane. Axle cap module after Claim 13 , 14 or 15 , characterized in that the guideway (27) is formed in a circumferential surface and the extension piston (22) is accommodated in the inner sleeve (23) without a degree of freedom of rotation, while the locking element (25) is displaceably received in the shift gate (50) on the axle cap module . Axle cap module according to one of the Claims 13 to 16 , characterized in that the guide track (27) has track sections (41, 42, 43, 44, 45, 46, 47, 48) connected to each other to form a closed loop, namely two at least predominantly in the axial direction on different circumferential coordinates, but at least essentially path sections (42, 48) extending in accordance with the axial coordinates, each of which ends at their ends in an at least predominantly circumferential path section (41, 43, 47) and are thereby connected to one another, a linear at least predominantly circumferential path section (41) forming the connects the two at least predominantly axial path sections (42, 48) at the axial height of the extended working position and opens at one end into one of the two at least predominantly axial path sections (42, 48) and with its other end via the mouth of the others at least predominantly in A projecting axial section, and the two at least predominantly axial sections (42, 48) at the axial level of the inserted assembly position each lead to an at least predominantly circumferential section (43, 47), which in turn is connected via an intermediate , are approximately U-shaped to the free end of the extension piston (22) opening web section (44, 45, 46) connected to each other. Axle cap module according to one of the Claims 13 to 17th characterized in that the guide track (27) has a first track section (41) which runs in the circumferential direction or at least predominantly with a predominant directional component and into which the locking element (25) engages while the extension piston (22) is in its extended working position, which opens at one of its release ends into a second path section (42) which runs in the axial direction or at least with a predominant directional component, so that the extension piston (22) is released for axial displacement in the inner sleeve (23) when the locking element ( 25) at the release end of the first track section (41), and at the other end has a muzzle-free, blind locking end, so that the extension piston (22) is locked against axial displacement in the inner sleeve (23) when the locking element (25) comes on the arrester of the first track section (41). Axle cap module after Claim 18 , characterized in that at the end of the second web section (42) facing away from the first web section (41) there is a third web section (43) extending in the circumferential direction or at least with a predominant directional component in the circumferential direction preferably in the same direction as the first web section (41) . Axle cap module after Claim 18 or 19th characterized in that the guide track (27) has a fifth track section (45) running in the circumferential direction or with a predominant directional component in the circumferential direction, into which the locking element (25) engages while the extension piston (22) is in its inserted assembly position, whereby the fifth path section (45) adjoins at its end in the circumferential direction on the side of the release end of the first path section (41) directly or via further path sections (43, 44) to the end of the second path section (42) opposite the release end and at its in Circumferential direction on the side of the locking end of the first track section (41) directly or via further track sections (46, 47) to a first end of an eighth track section (48) which defines the axial distance between the fifth track section (45) and the first track section ( 41) bridged and at its second end opposite the first end in the area h opens into the first path section (41) between the locking end and the release end. Axle cap module after Claim 20 , characterized in that the eighth track section (48) has an axial length that is greater than the axial distance between the fifth track section (45) and the first track section (41), the fifth track section (45) over one of its own its end in the circumferential direction on the locking end side of the first track section (41) from the sixth track section (46) extending in the axial direction or at least with a predominantly directional component in the axial direction away from the first track section (41) and a circumferential direction or at least with a predominant directional component in The seventh path section (47) which extends at the end of the sixth path section (46) and which adjoins the circumferential direction adjoins the first end of the eighth path section (48), so that the extension piston (22), which is in its inserted mounting position, is simply pushed in further the inner sleeve (23) can be disengaged partially automatically from its inserted assembly position by means of the pretensioning force of the bolt pretensioning device (24, 35). Axle cap module after Claim 20 or 21st characterized in that the second track section (42) has an axial length that is greater than the axial distance between the fifth track section (45) and the first track section (41), the second track section (42) over the third track section ( 43) and an end of the third track section (43) facing away from the second track section (42) in the axial direction or at least with a predominant directional component in the axial direction towards the first track section (41) and the fourth track section (44) in the circumferential direction on the side Release end of the first track section (41) adjoining the end of the fifth track section (45), so that the extension piston (22) in its extended position when the locking element (26) is in its release position by simply pushing it further into the inner sleeve (23) than the axial distance between the extended working position and the inserted M on position corresponds, by means of the pretensioning force of the bolt pretensioning device (24, 35) can be latched into its inserted assembly position in a partially automatic manner. Axle cap module according to one of the preceding Claims 10 to 22 , characterized in that the locking pretensioning device (24, 35) has a tension spring (24, 35) which extends in the circumferential direction around a wall section of the inner sleeve (23), engages with one end on the locking element (25) and with it the other end on a spring fastening (35) provided on the inner sleeve (23) at the axial height of the locking element (25). Axle cap module according to one of the preceding Claims 11 to 23 , characterized in that the latching device (29, 33) has a longitudinal rib (33) extending on the outer circumference of the inner sleeve (23) in the axial direction at the edge of the shift gate (50) on the side of the release end of the first track section (41), and one on the rotating ring (26) which is connected to the locking element (25) in a manner fixed against relative rotation and which projects radially inwards and which snaps onto the longitudinal rib (33) when the locking element (25) along the first track section (41) towards the release end is moved. Axle cap module according to one of the preceding Claims 11 to 24th , characterized in that the unlocking device (34) comprises a longitudinal rib widening (51) on the side of the longitudinal rib (33) facing away from the shift gate (50), which is provided at an axial height on the extension piston (22) which corresponds to the position of the snap hook (29) corresponds when the locking element (25) reaches the other end of the second track section (42) and a ramp (34) leading from the outer circumference of the inner sleeve (23) to the longitudinal rib widening (33) inclining to the axial direction. Axle cap module according to one of the preceding Claims 8 to 25th , characterized in that the actuating ring (30) can be rotated between the locking position and the release position of the locking element (25) and between the extended working position and the mounting position of the extension piston (22) pushed into the inner sleeve (23) on the front end of the inner sleeve (23 ) and is supported on the one hand with an essentially hollow cylindrical sleeve section on an essentially cylindrical outer circumferential section of the inner sleeve (23) and on the other hand with a perforated front wall section which opens an opening for the support member (3) on a shoulder surface of the shoulder facing the front end Extension piston (22), the actuating ring (26) being in engagement with the locking element (25), which engages in the circumferential direction and is axially movable relative to one another. Building opening shading device, such as a vertical awning or roller shutter, with a winding shaft, characterized in that the winding shaft is provided on at least one of its two ends with an axle cap module according to one of the preceding claims.

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