Fixing unit of driving mechanism of winding roller used in roller blinds, in particular in fabric roller blinds.

The subject of invention is a fixing unit of driving mechanism of winding roller used in roller blinds, in particular in fabric roller blinds.

There are various fixing units of driving mechanism of winding roller used in roller blinds, in particular in fabric roller blinds and different ways of fixing and dismantling the driving mechanism corresponding to them.

Widely-known driving mechanisms of winding rollers of fabric roller blinds consist of a tube winding roller swiveled in an axel of the element moved by a tension member and an element acting as a go-between in a transmission of a driving torque from the element moved by a tension member to a winding roller.

This element acting as a go-between is usually an end sleeve equipped on the inner side with elements coupled in rotation with elements corresponding to them located on the inner side of the tube winding roller in the area where the end sleeve is fixed in it.

Most frequently these are ribbed longitudinal projections placed around the outer side of the end sleeve and appropriate ribbed longitudinal projections on the inner side of the winding roller.

For fixing the driving mechanism on the chosen side of the winding roller constructions of the roller blind are usually equipped with assembly element most

often in form of a side plate in an outline closing the side space of roller blind's case from the side of fixing the mechanism.

The side plate with noticeable elements of these driving mechanisms is usually covered by outer side housing of the roller blind's case.

The pulley is usually an end shaped axial element slipped into the inside of the end sleeve and coupled with it during motion by means of appropriate elements, for example longitudinal projection on the inner side of end sleeve or other coupling set of ribbed elements, projections, etc..

The side plate which is an assembly element of a driving mechanism of a roller blind is equipped in the lower part with holes for screwing it to the frame of the window or door to be covered and holes in assembly area for screwing it to the side of the case.

In the nature of things end sleeve is situated towards the side assembly plate from the inner side of roller blind, that is from the side of the end of its winding roller.

There are two widely-known ways of assembling side plates and two ways of fixing driving mechanisms on them.

In case of the first one the side plate has an axial hole in which from the inner side a clear side of end sleeve with a resistance flange adjoining the surface of the side plate has been slipped, and from the outer side to the inside of the clear side of end sleeve — a coupling arbor constituting an end of a ringed pulley, with a bushing- type bearing in its body mounted to the window frame together with a side plate with the same screws through the same holes.

In case of the other solution, there is a full side assembly plate without an axial hole, as in the above mentioned solution, with a sleeve ribbed longitudinally on the side around the circuit projecting from it perpendicularly from the inner side, in close-up axially towards the winding roller and uniform with it. There is a coupling- driven element with a ringed bead wheel fixed on it, on the arbor of which a coupled and self-locking end sleeve has been fixed.

In order to disassemble these driving mechanisms one should unscrew a side assembly plate from the window frame and the side of roller blind's case or actually

disassemble the whole roller blind, remove the mechanism from the winding roller and repair or replace and then reassemble.

In case of the first the required unscrewing of screws fastening the driving unit to the window frame will cause the whole unit to fall into component parts since they do not have any joints or mutual arrangements than described above.

In case of the second solution the described way of fixing the driving mechanism should be reversed and a side assembly plate should also be unscrewed from the window frame and a side of roller blind's case. After the unscrewing process has been completed, a plate with the whole driving mechanism together with end sleeve should be separated, uncoupled from the sleeve and after the damaged element or the whole mechanism has been removed, the driving mechanism of roller blind should be reassembled as described.

Described solutions are characterized by many drawbacks and inconveniences. In order to repair or service the mechanism in case of both described units fixing the driving mechanism it is required to dismantle the whole roller blind from the window. The way of assembling is also very complex and laborious.

As a result of the indicated unfavorable construction features the assembly as well as disassembly of these driving mechanisms during service works is significantly hampered, time-consuming and ineffective.

Such construction complexity in combination with great number of actions and small dimensions of component parts of such units fixing driving mechanism of a roller blind, very often lead to falling out of service technician's hands and loss or the necessity to look for it, which additionally extends the time of assembling or disassembling.

Another inconvenience and drawback is the effect resulting from locating the driving mechanism on the inner part of a side assembly plate in the area of motion sphere of the roller blind's fabric.

It limits the width of roller blade's fabric that can be used and can influence its unstable positioning towards the surface of window or door opening causing ineffective covering and shines-through of the sun light.

The fixing unit of driving mechanism of winding roller used in roller blinds, in particular in fabric roller blinds in accordance with the invention including an assembly element of driving mechanism favorably in form of a side plate equipped with a central hole in which from the inner side there is an element acting as a go- between fixed in rotation from one side, coupled in rotation from one side with a winding roller and from the other side with an element of the mechanism moved by the pulley with a tension member, with a rotary bushing-type bearing, favorably on the shaped axial element situated inside it, is characterized by the fact that from the outer side the side assembly plate has blocking elements on its surface, on both sides of the central hole fixed with the possibility to turn at an angle. Simultaneously the unit includes shaped blocked elements connected with the outer end of the shaped axial element arranging the driving unit, while the mentioned blocking elements after being turned at a specific angle are being located in the arranged assembly position in a direct clamping adjacency at least on some surfaces of shaped blocked elements connected with the end of shaped axial element arranging the driving unit.

It is favorable when the blocking elements are non-thread shaped plugs each equipped with tightening flange, favorably eccentric towards the axle of the angular turn tightening flange, adjacent with its bottom surface to the surface of the given shaped blocked element.

According to the invention it is also favorable when beside the place of fixing the blocking element, favorably in form of non-thread shaped plug equipped with tightening flange, favorably eccentric towards the axle of angular turn tightening flange, adjacent with its bottom surface to the surface of the given shaped blocked element, the unit includes a shaped arm sticking out of the surface of side plate curved at an angle, under which after being turned at an angle a partly tightening flange of the replaced plug is being located.

In execution of the unit according to the invention the shaped blocked elements of the unit connected with the outer end of shaped axial element arranging the driving unit, favorably constitute the elements coming off its outer side parts covering the pulley in part of the circuit .

In other executions of the unit according to the invention it is also possible that the mentioned shaped blocked elements of the unit connected with outer end of shaped axial element arranging the driving unit, will constitute side parts of the element coupled in any way with this axial arranging element, constituting outer side covers covering the pulley in part of the circuit.

Fixing unit of driving mechanism of winding roller used in roller blinds, in particular in fabric roller blinds according to the invention, including assembly element of driving mechanism, favorably in form of a side plate equipped with a central hole in which from the inner side there is an element acting as a go-between fixed in rotation from one side, coupled in rotation from one side with a winding roller and from the other side with an element of the mechanism moved by a pulley with a tension member, with a rotary bushing-type bearing, favorably on the shaped axial element situated inside it, is characterized by the fact that from the outer side the side assembly plate has on its surface at both sides of the central hole persistently shaped clamp-coupled elements with shaped blocked elements connected with outer end of shaped axial element arranging the driving unit, constituting together a clamp link after the outer end of shaped axial element locating the shaped blocked elements of the unit in arranged assembly position in direct adjacency with the above mentioned clamp-coupled elements, shaped persistently on the outer part of the side plate, has been turned at an angle.

It is favorable when the clamp-coupled elements shaped persistently on the surface of the side plate constitute shaped excerpts, favorably with the maximum notch in central parts and elastic angular arms located above them sticking out from its surface. Lower surfaces of the shaped blocked elements on the other side have favorably a clamp projection being located in a specified assembly position within the maximum notch of the given shaped excerpt on the surface of the outer side plate after angular turn locating the shaped blocked elements of the unit under these elastic angular arms.

It is also favorable when the maximum notches of the shaped excerpts on the surface of the side plate accepting clamp projections of the lower surfaces of the

shaped blocked elements connected with the outer end of the shaped axial element arranging the driving unit, constitute arterial conical notches.

In the described executions of the unit according to the invention the shaped blocked elements of the unit connected with the outer end of the shaped axial element arranging the driving unit, can favorably constitute elements coming off its outer side parts covering the pulley in part of the circuit .

In other executions, these shaped blocked elements of the unit connected with the outer end of the shaped axial element arranging the driving unit can constitute side parts of the element coupled in any way with this axial arranging element, making outer side covers covering the pulley in part of the circuit.

Fixing unit of driving mechanism of winding roller used in roller blinds, in particular in fabric roller blinds according to the invention having assembly mechanism of the driving, favorably in form of side plate, equipped with a central hole in which from the inner side there is an element acting as a go-between fixed in rotation from one side, coupled in rotation from one side with a winding roller and from the other side with an element of the mechanism moved by a pulley with a tension member, with a rotary bushing-type bearing, favorably on the shaped axial element situated inside it, is characterized by the fact that the assembly side plate is equipped on both sides of the central hole with threaded plugs sticking out of its surface and the shaped axial element arranging the driving unit is connected with an outer end of the shaped blocked elements of the unit situated just by these threaded plugs from the sides of the central hole of the side plate, simultaneously as elements blocking the unit has fixing screws screwed in the above mentioned threaded plugs, while the fixing screws adjoin tight the above mentioned surfaces of the shaped blocked elements of the unit at least with the part of the lower surfaces of its heads after tightening.

The fixing screws adjoining favorably the surfaces of the above mentioned shaped blocked elements of the unit go through the side assembly plate and the said threaded plugs for fixing screws are arterial threaded holes.

It is favorable when the shaped blocked elements of the unit connected with the outer end of the shaped axial element arranging- the driving unit, are elements coming off its outer side parts covering the pulley in part of the circuit.

It is also favorable when according to other executions of the unit in accordance with the invention the shaped blocked elements connected with the outer end of the shaped axial element arranging the driving unit are side parts of the element coupled in any way with this axial arranging element making outer side covers covering the pulley in part of the circuit.

Fixing unit of driving mechanism of winding roller used in roller blinds, in particular in fabric roller blinds according to the invention having assembly mechanism of the driving, favorably in form of side plate, equipped with a central hole in which from the inner side there is an element acting as a go-between fixed in rotation from one side, coupled in rotation from one side with a winding roller and from the other side with an element of the mechanism moved by a pulley with a tension member, with a rotary bushing-type bearing, favorably on the shaped axial element situated inside it, is characterized by the fact that it includes simple elements fixing the driving mechanism, while the assembly side plate is equipped with noticeable from the top side shaped drains on both sides of the central hole directed down in the direction of its base, favorably vertically and has adjacent to the central hole shaped openings located at the level of lower parts of these drains. Simultaneously there are shaped elements of the unit connected with outer end of the shaped axial element arranging the driving unit slided from the outer side by the shaped openings so that their end parts adjoin the side drains of the plate from the inside on the part of their height at least with only a part and the above mentioned simple fixing elements are slided from the top in the above mentioned side shaped drains of the plate at least to the contact with the elements of the unit connected with the outer end of the shaped axial element arranging the driving unit blocking the driving unit.

It is favorable when the outer shaped elements of the unit connected with the outer end of the shaped axial element arranging the driving unit are elements constituting the formation of its outer side parts covering the pulley in part of the circuit and the above mentioned simple fixing elements slided from the top into the above mentioned side shaped drains of the plate constitute simultaneously elements fixing the side covers of the roller blind's case.

It is also favorable when according to other execution of the unit in accordance with the invention, the outer shaped elements of the unit connected with the outer end of the shaped axial element arranging the driving unit are side parts of the element coupled in any way with this axial arranging element, making outer side covers covering the pulley in part of the circuit and the above mentioned simple fixing elements slided from the top into the above mentioned side shaped drains of the plate are separate inlets, coupled favorably in a known way with the elements fixing the side coverings of the roller blind's case.

The solution according to the invention is characterized by the number of advantages. By the described fixing unit of driving mechanism for service and repair purposes the disassembling of the whole roller blind from the window has totally been eliminated.

As a result of the indicated favorable construction features the assembling as well as disassembling of these driving mechanisms during service works is now simple, easy and very effective.

Described simplicity of construction combined with eliminating up to this time necessary actions makes the assembly and disassembly a very comfort operation for the user as well as for the service technician.

When using the same assembly side plates on both sides of the winding roller it is possible to fix the driving mechanism on randomly selected side depending on needs.

Another advantage is an effect resulting from placing the driving mechanism on outer part of the assembly side plate that is beyond the area of motion sphere of the roller blind's fabric.

It facilitates using the whole width of space between the assembly side plates to use the proper roller blind's fabric width and influences its stable positioning towards the surface of window or door opening enabling efficient covering and eliminates the shines-through of the sun light.

The subject of the invention has been presented on the sample kinds of inventions and their successive executions described below and explained with a figure on which in Fig. 1-9 concerning the first type of invention the following has been shown:

- Fig. 1 fixing unit and driving mechanism in exhibitional axonometric view from the outside,

- Fig. 2 there is an axial view on the very assembly side plate from the same side,

- Fig. 3 view from side on the side plate,

- Fig. 4 axonometric view of the blocking element in form of a plug,

- Fig. 5 and 6 successive axial views of the plug from Fig. 4

- Fig. 7 axonometric axial view of the shaped axial element arranging the driving mechanism,

- Fig. 8 axonometric view of the end sleeve,

- Fig. 9 simplified section of the unit in the line of blocking elements of the unit, Fig.10- 13 on the other hand concerning another version of invention show:

- Fig. 10 fixing mechanism and driving mechanism in exhibitional axonometric view from the outside,

- Fig. 11 axial view on the assembly side plate from the other side,

- Fig. 12 axonometric view of the arbor,

- Fig. 13 side view of the shaped arbor from Fig.12.

However Fig. 14-17 concerning the third version of the invention show:

- Fig. 14 fixing unit and driving mechanism in exhibitional axonometric view of the particular elements,

- Fig. 15 axial view of the unit from the outside on the assembly side plate,

- Fig. 16 axonometric view of the very plate on the central hole,

- Fig. 17 axonometric view from the side of shaped arbor.

However Fig. 18-22 concerning the fourth version of the invention show:

- Fig. 18 fixing unit and driving mechanism in exhibitional axonometric view of the particular elements,

- Fig. 19 axial view of the unit from the outside on the assembly side plate, Fig. 20 axonometric view of the very plate on the central hole,

- Fig. 21 axonometric view from the side of the shaped arbor,

- Fig. 22 half- view — axial half-section of the unit with a part of driving mechanism.

Generally the driving mechanism of winding roller used in material roller blinds consists of a tube winding roller fixed in an axel moved by a bead tension member moved in a specific direction by the user and an element acting as a go- between in transferring the driving torque from this element moved by bead tension member to the winding roller.

There are four versions of the invention connected with the common essence with their successive examples of execution presented below.

In the first version of the solution according to the invention this go-between element is most frequently an end sleeve Ia equipped on the outer side with elements coupled in rotation with the corresponding elements placed suitably on the inner side of the tube winding roller in the area of fixing an end sleeve Ia in it.

Most frequently as in example these are ribbed longitudinal projections 2a placed around on the side of the outer end sleeve Ia and suitable ribbed longitudinal projections on the inner side of the winding roller, not shown in the figure.

For fixing the driving mechanism from the chosen side of winding roller the construction of the roller blind has assembly element in form of side plate 3 a of an outer outline closing the side space of roller blind's case from the side of placing the mechanism.

The assembly plate 3 a with driving mechanism elements fixed on it is covered by the outer housing of the roller blind's case, also not shown in the figure.

Ringed pulley 4a constitutes an end of shaped axial element slided into the end sleeve Ia and coupled with it during motion by means of particular elements.

In the example of execution the ringed pulley 4a constitutes an end of coupling sleeve 5 a, invisible in the figure, which is fitted to the inner diameter of the end sleeve Ia in which it is slided.

The assembly side plate 3 a constituting an assembly element of driving mechanism of a roller blind is equipped on edges of its lower border in holes 6a for fixing it to the frame of window or door to be covered and in assembly surface with holes 7a for fixing it to the side of roller blind's case.

End sleeve Ia is being located towards the assembly side plate 3 a from the inner side of roller blind, that is from the side of the end of its winding roller.

Assembly side plate 3 a has an axial hole 8a, in which from the inner part a smooth side of end sleeve is slided Ia reduced by the outer resistance flange adjoining the surface of the side plate 3a, and from the outer side to the inside of this side of end sleeve Ia there is a coupling sleeve mentioned before slided 5a with the ending in form of a ring pulley 4a.

This coupling sleeve 5 a, and the whole driving mechanism of roller blind with it are fixed in rotation on the part 9a of the greatest diameter, shaped axial element 10a in form of e.g. axial arbor situated inside this coupling sleeve 5a at whole length.

Generally from the outer part the assembly side plate 3a has blocking elements 11a on its surface on both sides of the central hole 8a fixed with the possibility to turn.

Simultaneously the unit includes shaped blocked elements 12a, connected with the outer end of the shaped axial element 10a arranging the driving unit, while the above mentioned blocking elements 1 Ia after angular turn at specified angle are being placed in arranged assembly position in direct tightening adjacency at least on some of the surfaces of shaped blocked elements 12a connected with the end of shaped axial element 10a arranging the driving unit.

In the example of execution these blocking elements l la constitute non-thread shaped plugs equipped each with eccentric tightening flange towards the axel of angular turn 13a, adjacent with its lower surface to the surface of the given shaped blocked element 12a.

Apart from the fixing place of the blocking element l la in form of this non- thread shaped plug equipped with tightening flange 13a, adjacent with its lower part to the surface of the given shaped blocked element 12a, the unit includes a shaped arm 14a sticking out of the surface of side plate 3 a curved at an angle, under which after angular turn a tightening flange 13a of the above mentioned plug is being situated.

In the exemplary execution the plug as a blocking element l la, showed clearly in Figures 5 and 6, has an ending 15a with a notch 16a fixed in the hole 17a of the side plate 3 a of the fixing unit. On frontal surface the plug - blocking element l la has a notch 18a for a screw for making an angular turn in it.

Shaped blocked elements 12a of the unit connected with the outer end of the shaped axial element 10a arranging the driving unit, constitute elements coming off its outer side parts 19a covering the pulley 4a in part of the circuit.

In other possible executions of the invention according to the invention these shaped blocked elements 12a of the unit connected with the outer end of the shaped blocked element 10a arranging the driving unit, may constitute side parts of an element coupled in any way with this axial arranging element 10a, making outer side housing of a pulley 4a in part of the circuit.

In this execution there are cylindrical insets 20a centering the shaped axial element 10a arranging the driving mechanism on the frontal surfaces of the blocked elements 12a shown in Figure 7, coming into holes 21a of an assembly side plate 3a of the unit.

Without straying away from the essence of the invention the blocking element 11a can have different ending than the exemplary plug and can be fixed differently in a side plate 3 a or on its surface with a possibility of turn.

In the second version of solution according to the invention the element acting as a go-between is most frequently an end sleeve Ib equipped on the outer side with elements coupled in rotation with corresponding elements placed appropriately on the inner side of the tube winding roller in the area of fixing an end sleeve Ib in it.

Most frequently as in example of execution these are ribbed longitudinal projections 2bplaced around on the outer side of end sleeve Ib and appropriate ribbed longitudinal projections on the inner side of the winding roller, not shown in the figure.

For fixing the driving mechanism on the chosen side of the winding roller constructions of the roller blind are usually equipped with assembly element most often in form of a side plate 3b in an outline closing the side space of roller blind's case from the side of fixing the mechanism.

The above mentioned assembly side plate 3b with the elements of driving mechanism fixed on it is covered by an outer side housing of roller blind's case, also not shown in the figure.

The ring pulley 4b constitutes an end of the shaped axial element slided to the inside of end sleeve Ib and coupled with it during motion by means of particular elements.

In the example of execution the ring pulley 4b constitutes an end of coupled sleeve, invisible in the figure, which is fitted to the inner diameter of the end sleeve Ib which is slided.

Assembly side plate 3 b constituting an assembly element of the driving mechanism of the roller blind is equipped on edges of its lower border in holes 5b for fixing it to the frame of window or door to be covered and in assembly surface with holes 6b for fixing it to the side of roller blind's case.

End sleeve Ib is situated towards the assembly side plate 3 b from the inner part of the roller blind, that is from the side of an end of its winding roller.

Assembly side plate 3b has an axial hole 7b, in which from the inner side a clear side of end sleeve with a resistance flange adjoining the surface of the side plate 3 b has been slipped, and from the outer side to the inside of the clear side of end sleeve Ib- a coupling arbor constituting an end of a ringed pulley 4b.

This coupling sleeve and the whole driving mechanism of roller blind with it are fixed in rotation on the part 8b of the greatest diameter, shaped axial element 9b in form of e.g. axial arbor situated inside this coupling sleeve at whole length.

Generally according to the inner part of the invention the assembly side plate 3b has persistently shaped clamp-coupled elements 10b, l ib on its surface on both sides of the central hole 7b with shaped blocked elements 12b, connected with the outer end of the shaped axial element 9b, arranging the driving unit, constituting together a clamp link after the outer end of shaped axial element 9b locating the shaped blocked elements 12b of the unit in arranged assembly position in direct adjacency with the above mentioned clamp-coupled elements, marked 10b, l ib, shaped persistently on the outer part of the side plate 3b, has been turned at an angle.

In the exemplary execution of the unit fixing the clamp-coupled elements marked 10b, l ib shaped persistently on the surface of side plate 3b constitute successively the shaped excerpts 10b, favorably with the maximum notch in central parts and situated above them elastic angular arms l ib sticking out of its surface, and lower surfaces of the shaped blocked elements 12b have clamp projection 13b being located in a fitted assembly position within the maximum notch of the given shaped excerpt 10b on the surface of the outer side plate 3 b after angular turn fixing the shaped blocked elements 16b of the unit under these elastic angular arms l ib.

These maximum notches of shaped excerpts 1 Ob on the surface of side plate 3b accepting clamp excerpts 13b of the lower surfaces of the shaped blocked elements 12b connected with the outer end of the shaped axial element 13b arranging the driving unit, constitute arterial, conical notches.

Shaped blocked elements 12b of the unit connected with the outer end of the shaped axial element 9b arranging the driving unit, constitute elements coming off its outer side parts 14b covering the pulley in part of the circuit 4b.

In other possible executions of the unit according to the invention these shaped blocked elements 12b of the unit connected with the outer end of the shaped axial element arranging the driving unit may constitute side parts of an element coupled in any way with this axial arranging element 9b, making outer side housings of the pulley 4b in part of the circuit.

In this execution according to the invention there are elements fixing the side housings of roller blind's case, not shown in the figure, slided from the top in the side shaped drains 15b directed down.

In the third version of the solution according to the invention this element acting as a go-between is most frequently an end sleeve Ic equipped on the outer side with elements coupled in rotation with corresponding placed suitably on the inner side of the tube winding roller in the area where the end sleeve 1 c is fixed in it.

Most frequently as in example these are ribbed longitudinal projections 2c placed around on the side of the outer end sleeve Ic and suitable ribbed longitudinal projections on the inner side of the winding roller, not shown in the figure.

For fixing the driving mechanism from the chosen side of winding roller the construction of the roller blind has assembly element in form of side plate 3 c of an outer outline closing the side space of roller blind's case from the side of placing the mechanism.

The above mentioned assembly side plate 3 c with the elements of driving mechanism fixed on it is covered by the outer side housing 4c of the roller blind's case.

Ringed pulley 5c constitutes an end of shaped axial element slided into the end sleeve Ic and coupled with it during motion by means of particular elements.

In the example of execution the ringed pulley 5 c constitutes an end of coupling sleeve 6c, while the inner diameter of coupling sleeve 6c in the area of its cutting 7c is fitted with the inner diameter of the end sleeve Ic, in which it is slided.

Assembly side plate 3 c, constituting an assembly element of the driving unit of the roller blade is equipped on the edges of its bottom border in holes 8 c for screwing

it to the frame of the window or door to be covered and in assembly surface with holes 9c for screwing it to the side of roller blind's case.

The end sleeve Ic is placed towards the assembly side plate 3c from the inner side of the roller blind, that is from the side of the end of its winding roller. The assembly side plate 3 c has an axial hole 10c, in which from the inner part a smooth side of end sleeve is slided Ic reduced by the outer resistance flange lie adjoining the surface of the side plate 3 c, and from the outer side to the inside of this side of end sleeve Ic there is a coupling sleeve 6c mentioned before slided with the ending in form of a ring pulley 5c.

This coupling sleeve 6c and the whole driving mechanism of roller blind with it are fixed in rotation on the part 12c of the greatest diameter, shaped axial element 13c in form of e.g. axial arbor situated inside this coupling sleeve 6c at whole length.

The assembly side plate 3c is equipped on both sides of a central hole 10c with threaded plugs sticking out of its surface 14c, and shaped axial element 13c arranging the driving unit is connected with the outer end of shaped blocked elements 15c of the unit, placed just by the threaded plugs 14c from the sides of the central hole 10c of the side plate 3 c.

Simultaneously as blocking elements, the unit includes fixing screws 14c screwed in the above mentioned threaded plugs, while the fixing screws 16c adjoin tight the above mentioned surfaces of the shaped blocked elements 15c of the unit at least with the part of the lower surfaces of its heads after tightening.

In the example the fixing screws 16c adjacent tightly to the surfaces of the above mentioned shaped blocked elements 15c of the unit go through the assembly side plate 3c, and the above mentioned threaded plugs 14c for fixing screws 16c constitute arterial threaded holes.

However these threaded plugs 14c do not have to be arterial.

The shaped blocked elements 15c of the unit connected with the outer end of shaped axial element 13c arranging the driving unit also constitute the elements coming off its outer side parts 17c covering the pulley in part of the circuit 5c.

There is also another solution possible that when according to another execution of the unit in accordance with the invention the shaped blocked elements 15c of the unit connected with the outer end of the shaped axial element 13c

arranging the driving unit, will constitute side parts of the elements coupled in any way with this axial element 13c arranging the driving mechanism making outer coverings of the pulley 5 c in part of the circuit. Moreover the assembly side plate 3 c on both sides of the central hole 10c is equipped with noticeable from the top side shaped drains 18c directed down in the direction off its base, vertically and includes shaped openings 19c adjacent to the central hole 10c.

There are shaped elements 17c of the unit slided from the outer side through the shaped openings 16c connected with the outer end of the shaped axial element 13c arranging the driving unit.

In this execution according to the invention there are elements 20c fixing the side housings 4c of the roller blind's case slided from the top into the side shaped drains 18c directed down.

In the fourth version of the solution according to the invention this element acting as a go-between is most frequently an end sleeve Id equipped on the outer side with elements coupled in rotation with corresponding elements placed suitably on the inner side of the tube winding roller in the area in which the end sleeve has been fixed Id.

Most frequently as in the example of execution these are ribbed longitudinal projections 2d placed around the outer side of the end sleeve Id and appropriate ribbed longitudinal projections on the inner side of the winding roller, not shown in the figure.

For fixing the driving mechanism from the chosen side of winding roller the construction of the roller blind has assembly element in form of side plate 3d of an outer outline closing the side space of roller blind's case from the side of placing the mechanism.

The above mentioned assembly plate with driving mechanism elements fixed on it is covered by the outer side housing 4d of the roller blind's case, also not shown in the figure.

Ringed pulley 5d constitutes an end of shaped axial element slided into the end sleeve Id and coupled with it during motion by means of particular elements.

In the example of execution the ringed pulley 6d constitutes an end of coupling sleeve 7d, while the inner diameter of coupling sleeve 7d in the area of its cutting is fitted with the inner diameter of the end sleeve Id, in which it is slided.

Assembly side plate 3d, constituting an assembly element of the driving unit of the roller blade is equipped on the edges of its bottom border in holes 8d for screwing it to the frame of the window or door to be covered and in assembly surface with holes 9d for screwing it to the side of roller blind's case. End sleeve Id is situated towards the assembly side plate 3d from the inner side of roller blind, that is from the side of the end of its winding roller.

The assembly side plate 3d has axial hole 1Od, in which from the inner part a smooth side of end sleeve is slided Id reduced by the outer resistance flange Hd adjoining the surface of the side plate 3d, and from the outer side to the inside of this side of end sleeve Id there is a coupling sleeve mentioned before slided 7d with the ending in form of a ringed pulley 1 Od.

This coupling sleeve 7d, and the whole driving mechanism of roller blind with it are fixed in rotation on the part 12d of the greatest diameter, shaped axial element 13d in form of e.g. axial arbor situated inside this coupling sleeve 7d at whole length.

The fixing unit of driving mechanism has simple fixing elements 14d aiming to block the driving mechanism in the position of functioning. Therefore the assembly side plate 3d on both sides of the central hole 1Od is equipped with noticeable from the top side shaped drains 15d directed down in the direction of its base, vertically and includes shaped openings 16d adjacent to the central hole 1Od situated at the level of the bottom parts of these drains 15d.

Simultaneously there are shaped elements 17d of the unit slided from the outer side through these shaped openings 16d, connected with the uter end of the shaped axial 13d arranging the driving unit so that their ending parts 18d adjoin the side drains 15 d of the plate 3d at least with a part of the surface from the inside on the part of its height and the above mentioned simple fixing elements 14d are slided from the top into the above mentioned shaped drains 15d of the plate 3d at least to the contact with elements 18d of the unit blocking the driving mechanism.

In another execution, not shown in the figure, the outer shaped elements 18d of the unit connected with outer end of the shaped axial element 13d arranging the

driving unit, constitute elements which are elements of the formation of its outer side parts covering the pulley 5d in part of a circuit and the above mentioned simple fixing elements 14d slipped from the top into the above mentioned side shaped drains 15d of the plate 3d are simultaneously elements fixing the outer side covers 4d of the roller blind's case.

In another execution according to the invention these outer shaped elements of the unit marked 18d connected with the outer end of the shaped axial element 13d arranging the driving unit constitute side parts of the element not shown in the figure and coupled in any way with this axial arranging element 13d constituting outer side covers covering the pulley 5d in part of the circuit, and the above mentioned simple fixing elements 14d slipped from the top in the above mentioned side shaped drains 15d of the plate 3d are separate inlets 2Od coupled in a known way with the elements fixing the side covers 4d of the roller blind's cover.