FI58815C - BROMSANORDNING FOER ROTERBARA OCH FJAEDERBELASTADE STAENGER VID VILKA AER FAESTBARA FOLIE- ELLER TYGMATERIAL - Google Patents

Description

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We M (11> utlAooninosskrift 5881 5 C Patent granted October 10, 1931

Patent meddelat ^ ^ (51) Kv.lk?/Int.CI.3 E 06 B 9/208 SUOMI - FINLAND (21) - ρ «· η« Μβι »ηΐη * 771892 (22) H» k «ml * pllvl - Aruttknlngsdtg 15.06.77 (23) The beginning of the cloud — GHtlghrtsdtg 15.06.77 (41) Become Public - Bllvlt off.ntlig 27.12.77

Patent and Registration Office .... ....... ... . . .....

'(44) Date of publication and date of publication. -

Patent and registration authorities Publication and other documents published on 31.12.80 (32) (33) (31) etuolkeu * —Begird prloritat l6.06.76

Sweden-Sweden (SE) 7606821-2 (71) (72) Bo Valter Segerljung, Karlbergsvägen 10, S-186 00 Vallentuna,

This invention relates to rotary and spring-loaded rods to which a film or fabric material can be attached - Bromsanordning för roterbara och fjäderbelastade stänger and for spring-loaded bars or tubes to which a film or fabric material can be attached to form roller blinds or the like ·

Roller curtains or the like are provided with closing members which automatically lock the rotation of the rods or tubes when the film or fabric material is partially rolled open by manual pulling, whereby the spring members arranged on the rods or tubes are tensioned during said unwinding · The closing members are released by centrifugal force again provided by said tension or spring tension. When the rotation of the rods or tubes is stopped, the closing members start to act and then lock the rods or tubes in a certain position so that their rotation is prevented ·

Due to the fact that the tension of the spring members is constantly increased when the film or fabric material is pulled open, the on-winding accelerates very quickly when the pulling is stopped quickly, e.g. when the manual pulling suddenly stops when the pulling member is released.

5881 5 2 This rapid rewinding often causes damage to the roller blinds on the one hand and to their fasteners, walls and the like on the other.

Therefore, there has long been a need to inhibit the rapid rotation of rods or tubes due to strong spring tension in the winding of film or fabric material after rapid release of the traction member.

The braking device according to the present invention fulfills this need in a very simple and efficient manner.

The brake device according to the invention is intended for rotating and spring-loaded rods or tubes to which a flexible film or fabric material can be attached, each rod or tube being provided with at least one closure device for locking and unlocking the rotation of the rod or tube, and each rod or tube rotatably movable about at least one shaft projecting from one end, which shaft can be fixed non-rotatably to a fixed holder, the brake device being characterized mainly by consisting of a sleeve fixed to the other end of the rod or tube, in which one or more movable weight segments arranged to press against the non-rotatably arranged closing element on the shaft under the effect of centrifugal force when the rod or tube rotates, in order to provide frictional braking of the rotational speed of the rod or tube si.

In addition, a brake device is characterized in that the sleeve is formed by two transverse walls arranged at a distance from each other and provided with bearing holes for the shaft, at least one of which walls is provided with a conical surface against which the weight segments and / or closing elements can be moved and axially displaced.

Three embodiments of a braking device according to the invention will be described in more detail below with reference to the accompanying drawings, in which Figures 1, 2 and 3 show a first embodiment, while Figure 4 shows a second embodiment and Figure 5 a third embodiment.

3,581 5

Figure 1 shows a longitudinal section of the end of a rod or tube in which a sleeve provided with a brake device is fixedly arranged.

Figure 2 shows a cross-section of the rod shown along the line II-II in Figure 1.

Figure 3 shows a cross-section through the sleeve and the brake device along the line III-III in Figure 1.

Fig. 4 shows a longitudinal section through a part of the sleeve provided with a brake device according to the second end of the rod and the second embodiment. Fig. 5 shows a cross-section through the braking device according to the third embodiment.

In the figures, the number 10 denotes a rod or tube on which the flexible film or fabric material 11 can be attached. In this case, by means of a wire 12 of metal or plastic around which one end of the film or fabric material 11 is bent, this together with the wire 12 is inserted into a longitudinal groove 13 »of the rod or tube 10 which is smaller in cross section than the bottom of the rod or tube. . Thus, the film or fabric material can be fastened quickly without the use of nails or the like.

At one end of the rod or tube 10 there is a sleeve 14,14 '»firmly connected in two parts, provided with two longitudinally spaced walls 15 and 15' provided with a bearing hole in the wall part holder for the non-rotating shaft 16, about the axis of which the rod or tube 10 rotates. Said shaft 16 is fixedly arranged at its end towards the center of the rod or tube 10 in a known manner on a guide pin 17 surrounded by a coil spring 18 fixed at one end to the guide pin 17 and at the other end fixed to the second transverse wall 15 'of the sleeve 14,14'. the coil spring 18 is continuously tensioned when the film or fabric material 11 is pulled open from the rod or tube 10.

An automatic closing device is temporarily arranged between the two transverse walls 15, 15 'of the sleeve 14, 14' and the shaft 16 to temporarily prevent the rotation of the rod or tube 10 when the unwinding or winding of the film or fabric material 11 has been brought to a certain position.

5881 5 4

As shown in Figures 1 and 3, this closure device is formed by a plurality of circular closure plates 19 # 19 '»19" which can move radially between the guide walls 20,20' fixedly arranged in the second part 15 of the sleeve and engage the toothed recesses 21,21 'in the shaft 16. or as the tube 10 rotates, said baffles 19 # 19 '»19" are centrifugally displaced from the engagement in the recesses 21,21' of the shaft 16, but when the rotation of the rod or tube 10 is stopped, one or more of the closure plates engage the recess 21, 21 in the shaft 16. ', due to the gravitational force then present, thus providing a temporary locking of the rotation of the rod or tube.

Said locking can also be achieved by means of pivoting hooks rotatable in a previously known manner, which are brought out of engagement and engagement with the corresponding recesses in the shaft under the same force conditions.

In the embodiment according to Fig. 4, only the part with the recess of the closing device is shown, and in the embodiment according to Fig. 5 no part of the closing device is shown.

Essential to the invention is a braking device which effectively prevents the film or fabric material 11 from being wound up too quickly.

Figures 1 and 3 show an embodiment of a braking device in which the outer transverse wall 15 of the sleeve 14,14 'is provided on the inside with a conical surface 22 so that the wall 15 is inclined obliquely towards the center of the sleeve 14,14'. The shaft 16 is provided with a flat brake disc 16 'against the wall 15'. Between the wall 15 and the jar roller plate 16 'and between the guide walls 20 and 20' are arranged radially displaceable weight segments 27, 27 ', 27 ", each of which is provided with an inclined surface 31 against the conical surface of the wall 15. The weight segments 27 , 27 ', 27 "are also provided with flat surfaces 31' against the brake disc 16 '.

When the rod or tube 10 is made to rotate rapidly, i.e. when the film or fabric material 11 is rolled onto the rod or tube 10, e.g. by manually relieving the traction, the weight segments 27,27 ', 27 "move towards the circumference of the sleeve. 5881 5 27,27 ', 27 "inclined surfaces 22 and 31 then press the weight segments 27,27', 27" against the brake disc 16, causing the shaft 16 to move axially so that the brake disc 16 'enters the wall 15 of the sleeve 14,14'. ', in which case a braking effect is created against the rotation of the rod or tube 10. This braking then takes place automatically at a predetermined rotational speed, which is then always maintained, which is a great advantage because e.g. the roller blind and its fastening member or some other member cannot be damaged.

In the embodiment of Figure 4, the sleeve is provided with two spaced-apart conical surfaces 26, 26 'against which two conical brake discs 29,29' can be braked, which are axially displaceable on a non-rotating shaft 16 "around which the rod or the tube 10 is arranged to rotate, in the same way as in the embodiment according to Figures 1, 2 and 3. Said brake discs 29, 29 'do not rotate about an axis 16 ", but are fixed with pins in elongate grooves made in the longitudinal direction of the axis 16".

Between these brake discs 29,29 'are arranged radially displaceably a number of weight segments 28,28', each of which is provided with two oblique surfaces which are tightened against the brake discs 29,29 '. Guide pins 30,30 'are fixed radially through the sleeve, on which the weight segments 28,28' are displaceably arranged. As the rod or tube 10 rotates, the weight segments are compressed by a centrifugal force of 28.28 'toward the circumference of the sleeve, causing the brake discs 29,29' to move against the conical surfaces 26.26 of the sleeve, thereby providing braking against excessive rotation of the rod or tube 10. Of course, a closing device 21 'of the type described above can also be provided in this embodiment.

The embodiment according to Fig. 5 shows in cross-section two halves of the sleeve 29, each half having a freely movable weight segment 24 which, like the weight segment 28.28 'shown in Fig. 4, is provided with oblique surfaces which can abut against the brake discs 29.29' or conical in the transverse walls of the sleeve. against the surfaces 26.26 '. As the rod or tube 10 rotates for winding the film or fabric material 11, according to the upper half of the sleeve, the weight segment 24 moves towards the circumference of the sleeve 5881 5 6, thus providing braking, in the same manner as in Fig. 4. As the rod or tube 10 rotates in the opposite direction, i.e. when the film or fabric material 11 is trampled open by the rod or tube 10, shown in the lower half of the sleeve, the weight segment 24 is brought out of contact with said brake discs 29,29 'or conical surfaces 26,26'. This effect is achieved by making a bead 23 * 'in the inner circular wall of each sleeve half, against which the wedge-shaped part and the surface 24' of the printing segment are made to press. Braking action is only required when the film or fabric material 11 needs to be made to roll over the rod or tube 10.

Also in this embodiment, the closing device described above can be used.

It is thus essential for the invention to have a braking device which prevents the rod or tube from rotating unintentionally rapidly when the closing device is suddenly released, e.g. when the manual pulling on the film or fabric material 11 is stopped during strong spring tension.

Modifications and combinations of the braking device according to the invention are, of course, possible within the scope of the inventive idea and the following claims. Centrifugal wedge braking power is essential to the invention.

Claims (9)

7 5881 5 A braking device for rotating and spring-loaded rods or tubes (10) to which a flexible film or fabric material (11) can be attached, each rod or tube (10) being provided with at least one closure device (19, 20, 21) for the rod or for locking and disengaging the rotation of the tube (10), each rod or tube (10) being rotatably movable about at least one shaft (16, 16 ") projecting from one end thereof, which shaft can be fixed to a non-rotatably fixed holder, characterized by in that the braking device consists of a sleeve (14, 14 ', 23) fixed to one end of the rod or tube (10), in which one or more movable weight segments (27, 27', 27 ", 24, 28) are arranged, 28 ') which, under the action of the centrifugal force generated by the rotation of the rod or tube (10), are arranged to press tightly against the closing element (16', 29, 29 ') rotatably arranged on the shaft (16, 16 "), the rod or the rotational speed of the tube (10) to provide friction braking, Brake device according to Claim 1, characterized in that the closing elements (29, 29 ') consist of one or more flange plates (29, 29') which do not rotate on the shaft (16, 16 '). Braking device according to Claims 1 and 2, characterized in that the closing elements (29, 29 ') are arranged axially displaceably on the shaft (16, 16'). Brake device according to Claim 1, characterized in that the sleeve (14, 14 ') is formed by two transverse walls (15, 15') spaced apart and provided with bearing holes for the shaft (16, 16 '). of which at least one of the walls (15) is provided with a conical surface (22) against which the weight segments (27, 27 ', 27 ") and / or the closing elements (29, 29') can be placed and axially displaceable. 8 5 8 815 Braking device according to Claims 1 and 4, characterized in that the weight segments (24, 28, 28 ') are provided with two opposite inclined surfaces which can press against the closing elements (29, 29') or the conical walls of the transverse walls. against pig surfaces. Brake device according to Claims 1 and 5, characterized in that the weight segments (24) are freely pivotable inside a part of the sleeve (23) and in that each weight segment (24) is provided with a wedge-shaped part, the surface (24 ') of which can settle on the sleeve. (23) against the diaphragm (23 ') formed on the inner side. Brake device according to Claims 1 and 6, characterized in that the weight segments (24) are pivotable relative to the closing elements (29, 29 ') when the rod or tube (10) rotates in the other direction and pivot away from the closing elements (29, 29') of the rod. or as the tube (10) rotates in the direction of Iraq. 1. Bromination of a rotary beam or a sheave of a rope (10), which can be used as a shielding material (11); och utlösning av stängens eller rörets (10) rotation, varjämte varje Stang eller rör (10) är roterbart rörlig kring ätminstone en frän dess ena ändparti utskju-tande Axel (16,16 "), som är icke roterbart infästbar i en fast anbringbar hällare , kännetecknad därav, att bromsanord-ningen bestär av en, vid stängens eller rörets (10) ena axelförsedda ändparti, fast infästbar sleys (14,14 ', 23), color är anordnade ett eller flera rörliga tyngdsegment (27, 27', 27 '724,28,28'), som, under the main rotation of the centrifugal screen or of the rotor (10) rotation, with an anchorage on the spindle of the axle (16,16 ") or a rotary anchorage of the rotor element (16 ', 29,29' ), for the purposes of the general rules on the application of the rules or regulations (10) astighet.