CA2087186A1 - Strip blind - Google Patents
Strip blindInfo
- Publication number
- CA2087186A1 CA2087186A1 CA 2087186 CA2087186A CA2087186A1 CA 2087186 A1 CA2087186 A1 CA 2087186A1 CA 2087186 CA2087186 CA 2087186 CA 2087186 A CA2087186 A CA 2087186A CA 2087186 A1 CA2087186 A1 CA 2087186A1
- Authority
- CA
- Canada
- Prior art keywords
- strip
- runner
- blind according
- hook
- track
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/36—Lamellar or like blinds, e.g. venetian blinds with vertical lamellae ; Supporting rails therefor
- E06B9/362—Travellers; Lamellae suspension stems
- E06B9/365—Distance pieces therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/36—Lamellar or like blinds, e.g. venetian blinds with vertical lamellae ; Supporting rails therefor
- E06B9/362—Travellers; Lamellae suspension stems
- E06B9/364—Operating mechanisms therein
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/36—Lamellar or like blinds, e.g. venetian blinds with vertical lamellae ; Supporting rails therefor
- E06B9/368—Driving means other than pulling cords
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Disclosed is a strip blind, the runners of which run in a track. In each of these runners is mounted a rotating shaft which can act on a cogged wheel and a strip hook; these are linked with each other via an arrangement for effecting translational and rotational adjustments of the hooks. The cogged wheel is integral with the rotating shaft; its teeth engage the teeth of toothed segments which face each other, and each of which is situated at the extremity of a coupling element with a coupling strip; the free end of the coupling element is shaped as a carrier for the neighbouring runner.
The strip blind can be operated by using a rod, chain, or the like. Lateral movement of the strips is possible either in a completely of partially closed position.
Disclosed is a strip blind, the runners of which run in a track. In each of these runners is mounted a rotating shaft which can act on a cogged wheel and a strip hook; these are linked with each other via an arrangement for effecting translational and rotational adjustments of the hooks. The cogged wheel is integral with the rotating shaft; its teeth engage the teeth of toothed segments which face each other, and each of which is situated at the extremity of a coupling element with a coupling strip; the free end of the coupling element is shaped as a carrier for the neighbouring runner.
The strip blind can be operated by using a rod, chain, or the like. Lateral movement of the strips is possible either in a completely of partially closed position.
Description
2 '~71~
STRIP BLIND
The invention relates to a strip blind with displaceable, in a track with a longitudinal slot, runners in each of which a rocking shaft, which is operationally connected with a cogged wheel and a strip hook, is arranged, and which are connected with each other by an arrangement for translational and rotational adjustment of strip hooks, wherein the end of the strip blind is fixedly connected to the end of the track and the beginning of the strip blind is provided with an adjustment mechanism.
In a known strip blind, the runners, which have a relatively complicated construction and on which the strips hang, are displaced translationally by a chain or a cord guided in the track, which chain or cord is guided about a roller at the end of the track and, at the opposite end, project out of the track as an operational loop. Strip-shaped spacers or connecting cords, which are stretched between the strips as chains, are arranged between the runners. For pivotal movement of the strips, a worm drive including a cogged wheel, which is arranged on a vertical rocking shaft for a strip hook and is drivingly connected with a worm arranged on an axis extending in the longitudinal direction of the track, can be provided in each runner. The worms of all 2 ~ ~ S 7 ~ i, `3 runners are aligned relative to each other and are all supported on a notched shaft which extends in the longitudinal direction of the track and, upon rotation, drives synchronously all worms in a respective selected rotational direction~ The worms can slide along the notched shaft in both directions along the track, At one end of the notched shaft, a drive gear is arranged over which a looped operational cord is guided (DE 30 29 179 Al, DE 33 03 715 Al, DE 38 25 911 Al, and DE 39 07 043 Al).
Such strip blinds consist of many exceptionally expensive parts, in addition, the worm-cogged wheel drive in each runner includes a sliding clutch. Mounting of such strip blinds is especially difficult when standard tracks, which do not pass in a conventional window opening, should be installed, especially when before placement, the delivered track should be brought to appropriate mounting dimensions.
Such mounting can be made satisfactory only by experienced and skillful workers.
Also known is a strip blind including runners, which are displaceable in the blind track, a drive element for displacing a runner in the track, rotatable swivelling axles, which carry the strip and are arranged on the runners, and a worm drive on each runner, which rotates upon actuation of 3 2 ~ 8 ~
the drive element and is engaged with its counter part of the swivelling axle, wherein the drive element is a cord which is releasably force-lockingly engages a belt pulley in each runner and connects the belt pulley with the worm drive (DE 38 22 727 Al).
Here, the slide clutch in each runner is replaced by the releasable force-locking engagement of the cord with a belt pulley connected with the worm drive and, in accordance with a preferred embodiment, formed as one piece with the worm drive and coaxially therewith. The cord causes rotation of tne belt pulley and thereby of the worm drive, whereby the strips are synchronously pivotally displaced about their vertical axes. In both end positions, the swivelling axles engage respective stops, so that no further rotation of the swivelling axles and, therefore, of the belt pulleys is possible. Only the belt pulley and, thus, the runners will be entrained by the cord, so that they will be collected into a pack at one end of the blind track.
While in the ]cnown strip blind, both the rotational movement oE the strips and the translational movement of the runners by only one drive element, namely, a cord displaceable in a ~ :~ ;i 7 ~
track, is possible, it however, requires a very costly construction of the runner. Each runner has a vertical rocking shaft arranged therein and to which a strip is attached. Inside the runner housing, a cogged wheel is supported on the rocking shaft and meshes with a worm wheel supported on a shaft that extends transverse to the rocking shaft in the runner housing. Outside of the runner housing, a belt pulley, which cooperates with the cords, i9 supported on the worm wheel shaft. The cord itself is guided about reversing rollers at each end of the track and can also drive one of the cranks.
In another blind, in which also both the translational movement of the runners and the rotational movement of the strips are effected by one drive element, the runner is also arranged on a track and carries a respective freely suspended strip on its vertical rocking shaft, which is rotated by a cogged wheel and the rotation of which is limited by stops, and wherein the cogged wheels which are connected with respective rocking shafts by slide clutchers, are engageable with drive bodies, which have a counterpart toothing and are displaceable in the blind track, for displacing and pivoting the strips. The drive body consists of an endless, flexible elastic drive band which is guided, at both ends of the track, about reversing rollers ~`v~
and has an inner run engageable with the cogged wheels and an outer return run displaceable on both respective sides of the blind plane along the track (DE 27 29 491 C2) Though in this strip blind, the drive band, without an in-line worm drive, directly engages the cogged wheels of the runners, a slide clutch between the cogged wheel and the working shaft is still necessary. In addition, at each end of the track, reversing rollers should be provided, and the drive band requires a complicated cross-section of the track for guiding both the working run and the idle run of the drive band.
Accordingly, the object of the invention is a strip blind the separate elements of which can by simply shaped and wherein both the translational movement of the runners and a rotational movement of the strips is effected only by one drive element, without need for a second additional drive element.
It has been found that this object, for a strip blind of the above-described type, can be simply achieved by nlaking the cogged wheel a component part of the rocking shaft, with the teeth of the cogged wheel engaging the teeth of opposite toothed segments each of which is supported on an end of a ~71g~
connecting element provided with a connecting strip, and the free end of which is formed as a driver for an adjacent runner.
According to the invention, the connecting elements, in a drawn condition of the strip blind, form two oppositely displaceable chains of connecting elements the toothed segments of which operationally connect the cogged wheels of all runners with each other. Due to this connection, the movemen~ of one chain of connecting elements in one direction causes, by means of cogged wheels pivotably supported on the vertical rocking shafts in the runners, movement of equal length of the opposite chain of connecting elements in the opposite direction. During these opposite movements, the cogged wheels displace all runners and, thereby, the supported on them strips, synchronoulsy by the same respective angle. The cogged wheels and the toothed segments are so dimensioned and connected with each other that, with the strips extending exactly transverse to the track, the middle teeth, e.g., seven teeth of each toothed segment, engage in opposite spaces of the cogged wheel, and that with movement of chain of connecting elements in opposite directions, all strips, in their end positions, pivot by 90 into a closed position, and, with movement out of the mid-position, pivot by another 90 into another r ' r~
closed position. In these closed positions, narrow regions adjacent to the longitudinal edges of the strips, lie close to each other. In addition, resilient stops on the toothed segments abut corresponding limiting stops on the runners.
It should be clear that any angle of the strips can be established with the chains of connecting elements.
Other features of the invention are disclosed in subclaims.
According to claims 23-27, the cogged wheel of the last strip hook is located in a borehole of an end member, the cross-section of which corresponds to the cross-section of a normal runner and which is attached to the track end. The cogged wheel of the first strip hook is located in a tensioning member, the cross-section of which also corresponds to the cross-section of a runner, and wherein, in the first embodiment, the first strip hook is combined with an operational stub. By movement of the operational stub, the opposite chains of connecting elements in the track are displaced by the cogged wheel of the tensloning member and thereby the cogged wheels in all runners are displaced by a corresponding rotation of the operational rod This is possible because of a particular construction of the runners and the connecting elements recited primarily in ~ ~r ~
claims 1, 2, 9, 10, 12, 1~, 23, 24.
~By means of the operational rod, the tensioning element and the runners can be pushed together, at the end of the track, to form a pack. By displacement of the tensioning member in opposite directions, first, the tensioning member and then the following runners are pulled out of the pack, with the drivers at the free ends of the connecting strips contacting the guide and support angles according to claim 13.
Thus, the conDecting elements perform multiple functions:
They form a component part of drive elements of a chain of connecting elements for translational movement of the runners and for rotational movement of the strips, and they assume additionally the function of spaces between the separate runners.
The structuxe of the connecting elements is rather simple.
Likewise simple is the structure of the cogged wheels and the rocking shafts inside the runners, as well as the structure of connecting elements between the strip hooks and the rocklng shafts, which are primarily recited in claims 2, 3, ~ and 15.
2fJ~7~S~
A:Lso, the cross-section of the track can be made rather s:;mple.
The features of the runners recited in claims 18 and 19, indicate that a number of runners necessary for a strip blind can be assembled, before their insertion into the tack, in a pack, whereby the time of mounting the strip blind is substantially reduced in comparison with the time required when each runner is separately inserted in the longitudinal slot of the track.
The simple construction of separate units of the strip blind according to the invention not only reduces the initial costs, but also enables manufacturing and installation of the strip blind by non-specialists. The addition, the strip blind can be installed by lay persons in a ~'Do-it-yourself way~, with a result that the strip blind according to the invention is especially.suitable for offering in a handyman market.
Instead of the operational rod, an arrangement according to claims 29 and 30, for effecting the translational movement of the runners and the rotational movement of the strips, can be used as a single drive element insertable into the tensioning member, with retention of the constructional l o r-- t ~
elements of the strip blind and with operating the strip blind with one chain.
A particular characteristic of the above described embodiments consists in that a reliable pivoting of all strips of the strip blind is insured only then when it is completely drawn out and its tensioning member is locked at the beginning of the track. Thereby, the tension in the chains of connecting elements, which is necessary for proper operation of the strip blind is produced.
The features of claim 32-37 make it possible to insure pivoting of the strips also when the strip blind is only partially drawn or is open.
The embodiment examples of the inventio~ U~
cliscussed below with reference to the drawings.
The drawings show:
Fig.l a perspective general view, Fig.2 a cross-sectional view through a track with a front view of a runner, Fig.3 a schematic plan view of the track without the upper wall, Fig.4 an exploded view of a runner with connecting ele~ents, Fig.5 a perspective view of a runner, Fig.6 a cross-sectional view of a runner shown in Fig.5, Fig.7 a plan view of a connecting element, Fig.8 a side view of a portion o~ a connecting element shown in Fig. 7, Fig,9 a perspective view of a tensioning member, 1 2 ~ " ~ 7 ~
Fig. 10 a perspective view of an end member, Fig.ll a constructional detail, Fig.12 a constructional detail, Fig.13 a cogged wheel, Fig.14 a partially cross-sectional side view of a tensioning member of the second embodiment, Fig.lS a plan view of Fig. 14, Fig.16 a cross-sectional view through Fig. 15, Fig.17 a pair of connecting elements that enable lateral movement of strips in a non-locked position of the strip blind, and Fig.18 a principle representation of runners for a strip blind with strips, which are able to pivot in a non-locked position of the strip blind.
A strip blind 1, which is schematically shown in Fig. 3, l3 2 f~ o 7 ~
is drawn from above, includes, in a ~nown manner, strips 2.
In Fig. 3, four strips are shown. According to the invention, the strip blind may include any arbitrary number of strips.
The strip blind run in a manner that will be explained later, in a track 6, the cross-sectional view of which is shown in Fig. 2. In the view, shown in Fig.3, the upper wall 12 is removed. The tack 6 has a beginning 7 and an end 8. The end 3 of the strip blind 1 is connected with the end 8 of its track in a manner that will be discussed later.
The beginning 4 of the track is formed by a tension member 101, which will be separately discussed later, with reference to Fig. 9. The end 3 of the strip blind 1 is formed by an end member 101, which in the shown embodiment is identical to the tensioning member lOl. The end member 101 is connected with the end 8 of the track, in a preferred embodiment, it is screwed in.
The track 6, the cross-section of which is shown in Fig. 2, has side walls 10 having upper portions 11, which are bent upwards and are connected with each other by the upper wall 12. Projected rim portions 13, which are provided on opposite sides of the upper wall 12, extend over the upper portions 11. The rim portions 13 are used for attaching ~ 3 ~
the track 6 to a ceiling. A longitudinal slot 15, which is limited by slot walls 16, is provided in the bottom of the track 6. The slot walls 16 are topped by guide bars 17 with inner edges 18.
The track 6 is closed at both its ends with end caps 20, shown only schmatically in Flg. 3, which will be discussed in detail with reference to Fig. 1. Each end cap has a side wall 21 and an intermediate wall 22 with a threaded borehole 23. The end cap 20 has an end wall 24 with projecting rims 25, which end wall closes the track 6 at the sides in an appropriate manner. Inside the track 6, the end caps 20 end with inner walls 26 with backward regions 27, the purpose of which will be discussed in detail later in connection with Fig. 1. For stabilizing the seating of the end caps 20 inside the track, side webs 28 are provided.
The strips, which are not shown in Fig. 1, are attached to runners 29 between the tension member 101 and the end member 101, which runners will be discussed in detail below, in connection with Figs. 1, 2, 5, and 6. Each runner consists of an upper part 30 with an upper surface 31 and a bottom part 32 with a botton~ surface 33. The runner 29 has a borehole 34 extending therethrough which, when the runner is inserted in the track 6, extends vertically. Fig. 6 shows ~ , 7 7 that the borehole 34 has an upper diameter 35 and a lower diameter 36, The upper part 30 and the lower part 32 are connected with each other by a front connecting web 37 and a rear connecting web 38, between which the borehole 34 is provided. Side slide channels 39, for the inner edges 18 of the slide bars 17, are provided in the runner 29 sidewise of the longitudinal slot 15 of the track. Fig. 2 shows the cooperation of the slide channels 39 with the inner edges 18 of the slide bars 17.
Above the slide channels 39, on both sides of the runner, there are provided side shoulder 57 which slides on the slide bars of the track 6.
Each runner has guide groves 40, which extend parallel to the side shoulders 57, for toothed segments 82 provided on connecting elements 77, which will be discussed later. ~he guide grooves 40 have side walls 41 and bottom surfaces 42.
In the~, longitudinal slots 43 are provided. Figs. 1,4 and 5 show that the guide grooves are limited each by a stop 45, the purpose of which will be discussed latter.
Above and bellow the guide groove 40, there are provided respective upper and lower channels 46 and 47, the purpose of which likewise will be discussed later.
2.,~7 8, The cross-section of the runner is designated with a numeral 4~ (Fig. 2). The front side 58 of each runner 29 ends with a fork-shaped clamp piece 50 having two fork arms 51 with side walls 52. Above the fork-shaped clamp piece 50, there is provided an adapter 53 which is received in a opening 60 on the back side 59 of the front runner. The fork-shaped clamp piece 50 and the adapter 53 of the runner are adapted to be assembled with the runner 29 before its mounting in the track 1. For facilitating the assembly, the fork arms are tapered in a forward direction. In the assembled condition of the runners 29, the adapters 53, which are on the front sides 58 of the runners engage in the openings 60 on the back sides 59 of the runners. Due to this, the time of insertion of the runners 29 in the longitudinal slot 15 of the track 6 is reduced.
Each runner 29 receive, in the borehole 34, a rocking shaft formed of a cogged wheel 68 and a hook 62 for a strip. The cogged wheel 68 is shown separately in detail in Fig. 13. It consists of gear rim 69 having a diameter 70 and teeth 71.
In an assembled condition, a swivelling ring 72 is arranged above the gear rim 69. In the assembled condition, the cogged wheel has a pin hole 73 with an inner wall 74 extending vertically therethrough. Slots 75 with catches 76 are provided in the inner wall 74. In the pin hole, an 2~g71l~5 insertion pin 66 can be inserted, in the assembled condition.
Beneath the insertion pin 66, a clip hook 63 for a strip is attached thereto. Above the clip hook 63, a swivelling ring 64 having a diameter 65 is arranged. The insertion 66 ends at the top with resilient catch tangs 67. In connection with Fig. 4, it is clear that the cogged wheel 68 is inserted from above, in the borehole 34 of the runner until the bottom surface of the gear rim 69 abuts the transitional surface from the larger upper diameter 35 to the lower smaller diameter 36. This prevents the cogged wheel from slipping through the borehole 34 during operation. Then, the insertion pin 66 of the strip hook 62 is inserted into the pin hole 73 until the resilient catch tangs 67 are locked behind the catches 76 at the end of the slots 75 in the pin hole 73 of the cogged wheel 68. Thereby a reliable connection between the cogged wheel 68 and the strip hook 62 is provided, and the pivot axis of the strip 2 is defined.
In the mounting condition, the teeth 71 of the gear rim 69 of the cogged wheel 68 extend through the longitudinal slots 43 in the bottom surfaces 42 of the opposite guide gooves 40 in each runner 29.
The separate runners 29 are connected with each other by 2 ~, 7 ~
the connecting elements 77. The connecting elements include each a connecting strip 78 with opposite slide edges 79 which can be chamfered at least on one side. An end of the connecting strip 78 is provided with a base 80 with a side wall 81 from which teeth 83 of a toothed segment project.
In the shown embodiment the toothed segment has seven teeth.
The teeth 83 of the toothed segment 82 have such dimenslons that they can easily mesh with the teeth 71 of the gear ring 69 of the cogged wheel 68. Fig. 2 shows that in the end region of the base 80, there is provided, for each toothed segment 82, a resilient stop 84 that cooperates with the stop 45 at the end of the guide groove 40 in the runner 29, to reliably limit the movement of the connecting elements 77 relative to the runners when the pivotal movement of the strips 2 is finished. Above and below each segment 82, reinforced slide edges 85 are provided on the connecting elements 77. The reinforced slide edges 85 slides in the channels 46 and 47 (Fig~ 2) in the runner.
The dimensioning is such that the teeth 83 of the toothed segments 82 mesh with the teeth 71 of the gear ring 69 of the cogged wheel 68.
On the back side of the toothed segments 82, there are 2~7~$;~
provided guide and stop angles 86 with guide channels 87 in which, in the mounted condition, the slide edges 79 of the connecting strips 78 of the connecting elements 77 slide.
The guide and stop angles 86 are formed so that they are abutted by a driver 89 at the free end of the connecting strip 78, whereby it is possible, by operating the tensioning member, to pull out individually separate runners of a jointly displaceable pack of runners at the end of the track.
The connecting strips 78 of the connecting elements are provided each with a longitudinal slot 68 which enables, as shown in Fig~ 11, to clip the connecting strips 78 in the upper and lower guide channels 46, 47 of the runners 29. As shown in Fig. 7, catches 90 are provided on the driver 89.
In distinction, e.g., of the driver 89 shown in Fig. 4, the driver shown in Fig. 7 has a slot 91. As shown in Fig. 4, the slide edges 79 of the connecting strips 78 can be provided with chamfers 92 which facilitate clipping of the connecting elements 77 in the runners.
Fig. 9 shows a guiding strip holder 93 with a clip hook 94 for the first strip 2 of the strip blind 1. The clip hook 94 has an eyelet in which an operating rod can be hanged up. Above the clip hook, a swivelling ring 95, a ~ ~ ~ 7: (g ~
swivelling ring 96, and a cogged wheel 97 are arranged. A
swivelling axial stub 98 is arranged above the cogged ~heel 97. The combination, shown in Fig. 9, is formed as a single piece, according to the preferred embodiment.
This piece is inserted into the tensioning member 101, which is shown in Figs. 1 and 9. The operating rod 99 has a suspension hook 100 for engaging in the eyelet of the clip hook 94. The tensioning member 101 has a cross-section 109 which is the same as that of a runner, the cross-section 49 of which is shown in Fig. 2. The tensioning member 101 is also provided on both sides with guide grooves 40 for the toothed segments 82 of the connecting elements 77.
The construction is similar to that discussed in connection with the runner 29. Only, in the bottom surfaces of the guide grooves 40, longitudinal slots 102, which are longer then the longitudinal slots 43 of the guide grooves 40, are provided.
In the shown embodiment, the tensioning member and the end member 101 are identical. Both members are provided with threaded openings 103. In the tensioning/end member 101, there is provided a borehole 34 which was discussed in connection with the runner 29. This borehole 34 is not used for any purpose in the tensioning member 101. In the end ~` ~t ~ ~ ' ~ r, menlber 101, however, as can be seen in the right portion of Fig. 1, a rocking sha~t, consisting of a cogged wheel and a strip hook, is inserted in the borehole 34, in a manner that was discussed in the description of the runner.
Both the tensioning member 101 and the end member 101 have a second borehole which is formed as an elongate hole 106.
This elongate hole 106 is a part of a vertical retainer 104 shown in Fig. 12. This retainer 104 serves for receiving the one-piece clip hook 94 with an eyelet, which was discussed in connection with Fig. 9. Because of the one-piece structure, the cogged wheel and the strip hook cannot be fitted together, as described. In order not to make the end member 101 too big, the retainer 104 is provided, in which the one-plece clip hook 94 with an eyelet can be inserted through a guide slot 105. As shown in the lower portion of Fig. 12, the guide slot 105 is made so narrow that the swevelling ring 96 of the clip hook passes therethrough only under pressure. In the assembled condition, the cogged wheel 97 is located in the cavity 107 for the cogged wheel, and the swivelling ring 96 is located in t.he cavity 108 for the swivelling ring.
The description of the end member 01, which is shown in Fig.
10, is unnecessary because it is identical to the described ~71~ ~
tensioning me~ber 101. For attaching the end member to the end 8 of the track 6, there is provided, as shown in Fig.
].0, a screw 110 with a washer 111.
OPERATION
After the length of the track 6 and, thereby, the necessary number of runners 29 is determined, the runner train is, e.g, assembled in such a manner that the toothed segments 82 of the connecting elements 77 are inserted into the guide grooves 40 of the runners 29 and are so ligned up that the cogged wheel 68 can be inserted from above into the borehole 34 of the runner 29. This must insure that opposite teeth 71 of the gear rim 69 engage in the middle tooth space between teeth 83 of the toothed segments 82.
Then, the insertion pin 66 is inserted in the pin hole 73 of the cogged wheel from beneath, so that a coupling between the cogged wheel 68 and the toothed segments 82 is established and a desired swiveling of the cogged wheel 68 is insured by displacement of the opposite connecting elements 77 in opposite directions.
Thereafter, the connecting strips of the connecting 2 v v 71~ ~
elements 77 are clipped, by using the resilience provided by the longitudinal slots 88, in the guide grooves 40 behind the guide and support angles 86 of the adjacent front runner 29 in the runner chain.
In the guide grooves of the tensioning/end member 101, there are provided longitudinal slots for teeth of cogged wheels 68 and 97, which are connected with these members. The toothed segments 82 with the teeth 83, the resilient stops 84, the reinforced slide edges 85 as well as the guide and support angles 86, but without the following connecting element 77, are inserted in the tensioning member 101.
These toothed segments transmit, by their guide and support angles 86, the swivelling of the cogged wheel 97 to the respective first connecting elements 77 in the chain of pairs of connecting elements. The clip hook 94 with an eyelet for the first strip, as it was discussed in connection with the Fig. 12, is inserted in the tensioning member 101.
The toothed segments 82 of the last connecting elements 77 in the chain of connecting elements cooperate with the cogged wheel 68 of the last strip of the strip blind 1 in the same manner as toothed segments 82 of other connecting elements with the teeth of the cogged wheels 68 of the 2~,~`7~ ~G
runners 29~
In the mounted condition, all runner 29 of the strip blind 1 are displaced to the end 8 of the track 6 as a pack, which is displaced to the end 8 of the track by means of the operational rod 99 of the tensioning member 101. The tensioning member 101 pushes the following runners 29 one after another until forming of the pack of the runner 29 ls finished. With this, the connecting elements 77 are pushed together, whereat a configuration of connecting strips 78, base 80 and toothed segment 82, which is shown in Fig. 8, facilitates joint displacement. With a relatively small number of runners, the pushed together connecting elements 77 have only a small sidewise protrusion, so that the track cross-section shown in Fig. 2 is satisfactory. When, however, the number of runners of a strip blind is important, under circumstances, a track 6 with a larger cross-section, e.g., as shown in Fig 1, is preferred.
When the strip bind is closed, the tensioning me~ber 101 is pulled, by means of the operational rod 99, to the beginning 7 of the track 6, whereat the guide and support angles 86 associated with the toothed segments 82 in the tensioning n~ember 101, entrain the drivers 89 of the first connecting elements 77 to which the toothed segments 82 and the cogged wheel 68 of the first runner are connected. In this way, all runner 29 are pulled out of the pack one after another until the tensioning member is in its position at the beginning of the track 6 and is retained there, under circumstances, by a clamp device, not shown.
The drivers of all connecting elements 77 abut the guide and support angles 86. The swivelling action of the operational rod 99 is transmitted to all strip hooks 62 of the runner train.
In the above described embodiment, the tensioning member 101 is combined with the operational rod 99 by which, in the above-described manner, both the translational movement and the rotational movement is transmitted to the runners 29 and the strips 2, respectively, by means of the connecting elements 77.
Figs. 14-16 show another tensioning member 112 the elements of which enable transmital of translational and rotational movements to chains of connecting elements 77 movable in opposite direction. Fig. 14 show a cross-sectional view through track 6 and the tensioning element 112 which provides for movement of chains of connecting elements 77 by means of a chain 117. A cogged wheel 68, together with the swivelling ring 72 and the insertion pin of the first strip ~"~7 ~
hook 62, 63, are inserted in the borehole 34 from beneath.
The cross-section 113 of the tensioning member 112 corresponds to the cross-section 49 of a standard runner 29.
In the tensioning member 112, there is provided, in a longitudinal direction, a threaded member 123 which in the shown embodiment is formed as a screw 123 with a head 12~.
On the threaded member 123, a roller 115 with an inner thread is mounted, about the circumference 116 of which an endless chain 117 is displaced. Fig. 15 shows that this endless chain 117 includes a suspended operational loop 118, a closing run 119, and an opening run 120. The chain runs, as it is shown in Fig. 16, inside the track 6, at the end of which a reversing roller 121 is driven. The chain can also be displaced through a corresponding reveresing channel, not shown, in the end cap 20. By pulling the closing run 119, the tensioning member 112, shown in Fig. 15, is displaced leftwards whereby, as in the first embodiment, the runners 29 are also pulled to the left. A friction force between the chain 117, the roller 115 with the inner thread, and the screw 123 is a necessary precondition for this leftward movement of the tensionining member 112 and the runners 29.
When the tensioning member 112 is locked at the beginning of the track 6, further pulling of the closing run 119 overcomes the above-mentioned friction force, and the roller 115 swivells. Because the threaded member of the 2~,~7 ~
screw 123 inside the tensioning member 112 cooperates with a rotation-preventing element 114, the screw or the threaded member 123 can move in the longitudinal direction inside the tensioning member 112. With a respective construction of the tensioning member 112, the left end of the threaded member can extend through an opening 126 in the front side of the tensioning member 112. Axial displacement of the roller 115 is prevented by a ~top 127. The first connecting element 77 of a chain of connecting elements is fixedly connected with the rotation-preventing element 114 or the thxeaded member 123, so that the axial movement of the threaded member 123 is transmitted to the chain of connecting elements. As it has already been described in connection with the first embodiment, the movement of one chain of connecting elements will be transmitted, by the cogged wheels 68 in the runners 29, into the movement of the second chain of connecting elements in an opposite direction, whereby all strips 2 of the strip blind 1 will synchronously pivot. By pulling the opening run 120 of the endless chain 117, the tensioning member 112 in Fig. 15 is pulled rightwardæ whereby, as in the flrst embodlment, all runners 29 are pushed together for forming a pacX of runner at the end of the track 6~ At that, all strips should be moved laterally in a direction transvers to the track 6.
2~
~ J' ~) 7 i ~ `.
Fig. 17 shows that he connecting strips 78 of the connecting elements 77 are provided, shortly before the catches 90 of the drivers 89, with brake knobs 54. The distance between the catch 90 and an adjacent edge of the brake knob 54 corresponds to the width of the guide and support angle 86 ~hich passes into this space. An elongate slot 55 is provided in the connecting strip 78 between the brake knobs.
The elongate slot 55 can be formed as slot 91, and it is widened and open backward. The dimensioning of the slots 55 and 91 defines the brake force between the guide and support angle 86 and the braking knob 54 when the guide and support angle 86 slides past the braking knob 54.
Fig. 18 shows a cam 48 at the end of each fork arm Sl, a recess 44 in the bottom surface 33 of a runner 29 and the tensioning me~ber, an a run-on curve 56 between the back side 59 of the runner 29 and the recess 44. When the runners 29 and the tensioning member 101 are pushed together at the end 8 of the track 6 to form a pack, all cams 48 are engaged in the recesses 44 of forward runners 29. As a result, the respective friction forces between the following each other runners 29, the end member lOl and the tensioning 7 ~
member are bigger then the friction forces between the brake knobs 54 and guide and support angles 86.
Upon pulling of tensioning members 101, 112 and separate runners 29 from the runner pack, a respective connection between the following runner 29 and the runner 29 which is located in front of it in the pack, is retained until the guide and support angles 86 pass over the brake knobs 54, abut the catches 90 of drivers 89 and effect a pull.
Because the guide and support angles are locked between the catches 90 of the drivers 89 and the brake knobs 54, stable chains of connecting elements are formed, which enable pivotal movement of all strips 2 of a partially closed strip blind and which are preserved also when the runners 29 are pushed together to form a pack.
STRIP BLIND
The invention relates to a strip blind with displaceable, in a track with a longitudinal slot, runners in each of which a rocking shaft, which is operationally connected with a cogged wheel and a strip hook, is arranged, and which are connected with each other by an arrangement for translational and rotational adjustment of strip hooks, wherein the end of the strip blind is fixedly connected to the end of the track and the beginning of the strip blind is provided with an adjustment mechanism.
In a known strip blind, the runners, which have a relatively complicated construction and on which the strips hang, are displaced translationally by a chain or a cord guided in the track, which chain or cord is guided about a roller at the end of the track and, at the opposite end, project out of the track as an operational loop. Strip-shaped spacers or connecting cords, which are stretched between the strips as chains, are arranged between the runners. For pivotal movement of the strips, a worm drive including a cogged wheel, which is arranged on a vertical rocking shaft for a strip hook and is drivingly connected with a worm arranged on an axis extending in the longitudinal direction of the track, can be provided in each runner. The worms of all 2 ~ ~ S 7 ~ i, `3 runners are aligned relative to each other and are all supported on a notched shaft which extends in the longitudinal direction of the track and, upon rotation, drives synchronously all worms in a respective selected rotational direction~ The worms can slide along the notched shaft in both directions along the track, At one end of the notched shaft, a drive gear is arranged over which a looped operational cord is guided (DE 30 29 179 Al, DE 33 03 715 Al, DE 38 25 911 Al, and DE 39 07 043 Al).
Such strip blinds consist of many exceptionally expensive parts, in addition, the worm-cogged wheel drive in each runner includes a sliding clutch. Mounting of such strip blinds is especially difficult when standard tracks, which do not pass in a conventional window opening, should be installed, especially when before placement, the delivered track should be brought to appropriate mounting dimensions.
Such mounting can be made satisfactory only by experienced and skillful workers.
Also known is a strip blind including runners, which are displaceable in the blind track, a drive element for displacing a runner in the track, rotatable swivelling axles, which carry the strip and are arranged on the runners, and a worm drive on each runner, which rotates upon actuation of 3 2 ~ 8 ~
the drive element and is engaged with its counter part of the swivelling axle, wherein the drive element is a cord which is releasably force-lockingly engages a belt pulley in each runner and connects the belt pulley with the worm drive (DE 38 22 727 Al).
Here, the slide clutch in each runner is replaced by the releasable force-locking engagement of the cord with a belt pulley connected with the worm drive and, in accordance with a preferred embodiment, formed as one piece with the worm drive and coaxially therewith. The cord causes rotation of tne belt pulley and thereby of the worm drive, whereby the strips are synchronously pivotally displaced about their vertical axes. In both end positions, the swivelling axles engage respective stops, so that no further rotation of the swivelling axles and, therefore, of the belt pulleys is possible. Only the belt pulley and, thus, the runners will be entrained by the cord, so that they will be collected into a pack at one end of the blind track.
While in the ]cnown strip blind, both the rotational movement oE the strips and the translational movement of the runners by only one drive element, namely, a cord displaceable in a ~ :~ ;i 7 ~
track, is possible, it however, requires a very costly construction of the runner. Each runner has a vertical rocking shaft arranged therein and to which a strip is attached. Inside the runner housing, a cogged wheel is supported on the rocking shaft and meshes with a worm wheel supported on a shaft that extends transverse to the rocking shaft in the runner housing. Outside of the runner housing, a belt pulley, which cooperates with the cords, i9 supported on the worm wheel shaft. The cord itself is guided about reversing rollers at each end of the track and can also drive one of the cranks.
In another blind, in which also both the translational movement of the runners and the rotational movement of the strips are effected by one drive element, the runner is also arranged on a track and carries a respective freely suspended strip on its vertical rocking shaft, which is rotated by a cogged wheel and the rotation of which is limited by stops, and wherein the cogged wheels which are connected with respective rocking shafts by slide clutchers, are engageable with drive bodies, which have a counterpart toothing and are displaceable in the blind track, for displacing and pivoting the strips. The drive body consists of an endless, flexible elastic drive band which is guided, at both ends of the track, about reversing rollers ~`v~
and has an inner run engageable with the cogged wheels and an outer return run displaceable on both respective sides of the blind plane along the track (DE 27 29 491 C2) Though in this strip blind, the drive band, without an in-line worm drive, directly engages the cogged wheels of the runners, a slide clutch between the cogged wheel and the working shaft is still necessary. In addition, at each end of the track, reversing rollers should be provided, and the drive band requires a complicated cross-section of the track for guiding both the working run and the idle run of the drive band.
Accordingly, the object of the invention is a strip blind the separate elements of which can by simply shaped and wherein both the translational movement of the runners and a rotational movement of the strips is effected only by one drive element, without need for a second additional drive element.
It has been found that this object, for a strip blind of the above-described type, can be simply achieved by nlaking the cogged wheel a component part of the rocking shaft, with the teeth of the cogged wheel engaging the teeth of opposite toothed segments each of which is supported on an end of a ~71g~
connecting element provided with a connecting strip, and the free end of which is formed as a driver for an adjacent runner.
According to the invention, the connecting elements, in a drawn condition of the strip blind, form two oppositely displaceable chains of connecting elements the toothed segments of which operationally connect the cogged wheels of all runners with each other. Due to this connection, the movemen~ of one chain of connecting elements in one direction causes, by means of cogged wheels pivotably supported on the vertical rocking shafts in the runners, movement of equal length of the opposite chain of connecting elements in the opposite direction. During these opposite movements, the cogged wheels displace all runners and, thereby, the supported on them strips, synchronoulsy by the same respective angle. The cogged wheels and the toothed segments are so dimensioned and connected with each other that, with the strips extending exactly transverse to the track, the middle teeth, e.g., seven teeth of each toothed segment, engage in opposite spaces of the cogged wheel, and that with movement of chain of connecting elements in opposite directions, all strips, in their end positions, pivot by 90 into a closed position, and, with movement out of the mid-position, pivot by another 90 into another r ' r~
closed position. In these closed positions, narrow regions adjacent to the longitudinal edges of the strips, lie close to each other. In addition, resilient stops on the toothed segments abut corresponding limiting stops on the runners.
It should be clear that any angle of the strips can be established with the chains of connecting elements.
Other features of the invention are disclosed in subclaims.
According to claims 23-27, the cogged wheel of the last strip hook is located in a borehole of an end member, the cross-section of which corresponds to the cross-section of a normal runner and which is attached to the track end. The cogged wheel of the first strip hook is located in a tensioning member, the cross-section of which also corresponds to the cross-section of a runner, and wherein, in the first embodiment, the first strip hook is combined with an operational stub. By movement of the operational stub, the opposite chains of connecting elements in the track are displaced by the cogged wheel of the tensloning member and thereby the cogged wheels in all runners are displaced by a corresponding rotation of the operational rod This is possible because of a particular construction of the runners and the connecting elements recited primarily in ~ ~r ~
claims 1, 2, 9, 10, 12, 1~, 23, 24.
~By means of the operational rod, the tensioning element and the runners can be pushed together, at the end of the track, to form a pack. By displacement of the tensioning member in opposite directions, first, the tensioning member and then the following runners are pulled out of the pack, with the drivers at the free ends of the connecting strips contacting the guide and support angles according to claim 13.
Thus, the conDecting elements perform multiple functions:
They form a component part of drive elements of a chain of connecting elements for translational movement of the runners and for rotational movement of the strips, and they assume additionally the function of spaces between the separate runners.
The structuxe of the connecting elements is rather simple.
Likewise simple is the structure of the cogged wheels and the rocking shafts inside the runners, as well as the structure of connecting elements between the strip hooks and the rocklng shafts, which are primarily recited in claims 2, 3, ~ and 15.
2fJ~7~S~
A:Lso, the cross-section of the track can be made rather s:;mple.
The features of the runners recited in claims 18 and 19, indicate that a number of runners necessary for a strip blind can be assembled, before their insertion into the tack, in a pack, whereby the time of mounting the strip blind is substantially reduced in comparison with the time required when each runner is separately inserted in the longitudinal slot of the track.
The simple construction of separate units of the strip blind according to the invention not only reduces the initial costs, but also enables manufacturing and installation of the strip blind by non-specialists. The addition, the strip blind can be installed by lay persons in a ~'Do-it-yourself way~, with a result that the strip blind according to the invention is especially.suitable for offering in a handyman market.
Instead of the operational rod, an arrangement according to claims 29 and 30, for effecting the translational movement of the runners and the rotational movement of the strips, can be used as a single drive element insertable into the tensioning member, with retention of the constructional l o r-- t ~
elements of the strip blind and with operating the strip blind with one chain.
A particular characteristic of the above described embodiments consists in that a reliable pivoting of all strips of the strip blind is insured only then when it is completely drawn out and its tensioning member is locked at the beginning of the track. Thereby, the tension in the chains of connecting elements, which is necessary for proper operation of the strip blind is produced.
The features of claim 32-37 make it possible to insure pivoting of the strips also when the strip blind is only partially drawn or is open.
The embodiment examples of the inventio~ U~
cliscussed below with reference to the drawings.
The drawings show:
Fig.l a perspective general view, Fig.2 a cross-sectional view through a track with a front view of a runner, Fig.3 a schematic plan view of the track without the upper wall, Fig.4 an exploded view of a runner with connecting ele~ents, Fig.5 a perspective view of a runner, Fig.6 a cross-sectional view of a runner shown in Fig.5, Fig.7 a plan view of a connecting element, Fig.8 a side view of a portion o~ a connecting element shown in Fig. 7, Fig,9 a perspective view of a tensioning member, 1 2 ~ " ~ 7 ~
Fig. 10 a perspective view of an end member, Fig.ll a constructional detail, Fig.12 a constructional detail, Fig.13 a cogged wheel, Fig.14 a partially cross-sectional side view of a tensioning member of the second embodiment, Fig.lS a plan view of Fig. 14, Fig.16 a cross-sectional view through Fig. 15, Fig.17 a pair of connecting elements that enable lateral movement of strips in a non-locked position of the strip blind, and Fig.18 a principle representation of runners for a strip blind with strips, which are able to pivot in a non-locked position of the strip blind.
A strip blind 1, which is schematically shown in Fig. 3, l3 2 f~ o 7 ~
is drawn from above, includes, in a ~nown manner, strips 2.
In Fig. 3, four strips are shown. According to the invention, the strip blind may include any arbitrary number of strips.
The strip blind run in a manner that will be explained later, in a track 6, the cross-sectional view of which is shown in Fig. 2. In the view, shown in Fig.3, the upper wall 12 is removed. The tack 6 has a beginning 7 and an end 8. The end 3 of the strip blind 1 is connected with the end 8 of its track in a manner that will be discussed later.
The beginning 4 of the track is formed by a tension member 101, which will be separately discussed later, with reference to Fig. 9. The end 3 of the strip blind 1 is formed by an end member 101, which in the shown embodiment is identical to the tensioning member lOl. The end member 101 is connected with the end 8 of the track, in a preferred embodiment, it is screwed in.
The track 6, the cross-section of which is shown in Fig. 2, has side walls 10 having upper portions 11, which are bent upwards and are connected with each other by the upper wall 12. Projected rim portions 13, which are provided on opposite sides of the upper wall 12, extend over the upper portions 11. The rim portions 13 are used for attaching ~ 3 ~
the track 6 to a ceiling. A longitudinal slot 15, which is limited by slot walls 16, is provided in the bottom of the track 6. The slot walls 16 are topped by guide bars 17 with inner edges 18.
The track 6 is closed at both its ends with end caps 20, shown only schmatically in Flg. 3, which will be discussed in detail with reference to Fig. 1. Each end cap has a side wall 21 and an intermediate wall 22 with a threaded borehole 23. The end cap 20 has an end wall 24 with projecting rims 25, which end wall closes the track 6 at the sides in an appropriate manner. Inside the track 6, the end caps 20 end with inner walls 26 with backward regions 27, the purpose of which will be discussed in detail later in connection with Fig. 1. For stabilizing the seating of the end caps 20 inside the track, side webs 28 are provided.
The strips, which are not shown in Fig. 1, are attached to runners 29 between the tension member 101 and the end member 101, which runners will be discussed in detail below, in connection with Figs. 1, 2, 5, and 6. Each runner consists of an upper part 30 with an upper surface 31 and a bottom part 32 with a botton~ surface 33. The runner 29 has a borehole 34 extending therethrough which, when the runner is inserted in the track 6, extends vertically. Fig. 6 shows ~ , 7 7 that the borehole 34 has an upper diameter 35 and a lower diameter 36, The upper part 30 and the lower part 32 are connected with each other by a front connecting web 37 and a rear connecting web 38, between which the borehole 34 is provided. Side slide channels 39, for the inner edges 18 of the slide bars 17, are provided in the runner 29 sidewise of the longitudinal slot 15 of the track. Fig. 2 shows the cooperation of the slide channels 39 with the inner edges 18 of the slide bars 17.
Above the slide channels 39, on both sides of the runner, there are provided side shoulder 57 which slides on the slide bars of the track 6.
Each runner has guide groves 40, which extend parallel to the side shoulders 57, for toothed segments 82 provided on connecting elements 77, which will be discussed later. ~he guide grooves 40 have side walls 41 and bottom surfaces 42.
In the~, longitudinal slots 43 are provided. Figs. 1,4 and 5 show that the guide grooves are limited each by a stop 45, the purpose of which will be discussed latter.
Above and bellow the guide groove 40, there are provided respective upper and lower channels 46 and 47, the purpose of which likewise will be discussed later.
2.,~7 8, The cross-section of the runner is designated with a numeral 4~ (Fig. 2). The front side 58 of each runner 29 ends with a fork-shaped clamp piece 50 having two fork arms 51 with side walls 52. Above the fork-shaped clamp piece 50, there is provided an adapter 53 which is received in a opening 60 on the back side 59 of the front runner. The fork-shaped clamp piece 50 and the adapter 53 of the runner are adapted to be assembled with the runner 29 before its mounting in the track 1. For facilitating the assembly, the fork arms are tapered in a forward direction. In the assembled condition of the runners 29, the adapters 53, which are on the front sides 58 of the runners engage in the openings 60 on the back sides 59 of the runners. Due to this, the time of insertion of the runners 29 in the longitudinal slot 15 of the track 6 is reduced.
Each runner 29 receive, in the borehole 34, a rocking shaft formed of a cogged wheel 68 and a hook 62 for a strip. The cogged wheel 68 is shown separately in detail in Fig. 13. It consists of gear rim 69 having a diameter 70 and teeth 71.
In an assembled condition, a swivelling ring 72 is arranged above the gear rim 69. In the assembled condition, the cogged wheel has a pin hole 73 with an inner wall 74 extending vertically therethrough. Slots 75 with catches 76 are provided in the inner wall 74. In the pin hole, an 2~g71l~5 insertion pin 66 can be inserted, in the assembled condition.
Beneath the insertion pin 66, a clip hook 63 for a strip is attached thereto. Above the clip hook 63, a swivelling ring 64 having a diameter 65 is arranged. The insertion 66 ends at the top with resilient catch tangs 67. In connection with Fig. 4, it is clear that the cogged wheel 68 is inserted from above, in the borehole 34 of the runner until the bottom surface of the gear rim 69 abuts the transitional surface from the larger upper diameter 35 to the lower smaller diameter 36. This prevents the cogged wheel from slipping through the borehole 34 during operation. Then, the insertion pin 66 of the strip hook 62 is inserted into the pin hole 73 until the resilient catch tangs 67 are locked behind the catches 76 at the end of the slots 75 in the pin hole 73 of the cogged wheel 68. Thereby a reliable connection between the cogged wheel 68 and the strip hook 62 is provided, and the pivot axis of the strip 2 is defined.
In the mounting condition, the teeth 71 of the gear rim 69 of the cogged wheel 68 extend through the longitudinal slots 43 in the bottom surfaces 42 of the opposite guide gooves 40 in each runner 29.
The separate runners 29 are connected with each other by 2 ~, 7 ~
the connecting elements 77. The connecting elements include each a connecting strip 78 with opposite slide edges 79 which can be chamfered at least on one side. An end of the connecting strip 78 is provided with a base 80 with a side wall 81 from which teeth 83 of a toothed segment project.
In the shown embodiment the toothed segment has seven teeth.
The teeth 83 of the toothed segment 82 have such dimenslons that they can easily mesh with the teeth 71 of the gear ring 69 of the cogged wheel 68. Fig. 2 shows that in the end region of the base 80, there is provided, for each toothed segment 82, a resilient stop 84 that cooperates with the stop 45 at the end of the guide groove 40 in the runner 29, to reliably limit the movement of the connecting elements 77 relative to the runners when the pivotal movement of the strips 2 is finished. Above and below each segment 82, reinforced slide edges 85 are provided on the connecting elements 77. The reinforced slide edges 85 slides in the channels 46 and 47 (Fig~ 2) in the runner.
The dimensioning is such that the teeth 83 of the toothed segments 82 mesh with the teeth 71 of the gear ring 69 of the cogged wheel 68.
On the back side of the toothed segments 82, there are 2~7~$;~
provided guide and stop angles 86 with guide channels 87 in which, in the mounted condition, the slide edges 79 of the connecting strips 78 of the connecting elements 77 slide.
The guide and stop angles 86 are formed so that they are abutted by a driver 89 at the free end of the connecting strip 78, whereby it is possible, by operating the tensioning member, to pull out individually separate runners of a jointly displaceable pack of runners at the end of the track.
The connecting strips 78 of the connecting elements are provided each with a longitudinal slot 68 which enables, as shown in Fig~ 11, to clip the connecting strips 78 in the upper and lower guide channels 46, 47 of the runners 29. As shown in Fig. 7, catches 90 are provided on the driver 89.
In distinction, e.g., of the driver 89 shown in Fig. 4, the driver shown in Fig. 7 has a slot 91. As shown in Fig. 4, the slide edges 79 of the connecting strips 78 can be provided with chamfers 92 which facilitate clipping of the connecting elements 77 in the runners.
Fig. 9 shows a guiding strip holder 93 with a clip hook 94 for the first strip 2 of the strip blind 1. The clip hook 94 has an eyelet in which an operating rod can be hanged up. Above the clip hook, a swivelling ring 95, a ~ ~ ~ 7: (g ~
swivelling ring 96, and a cogged wheel 97 are arranged. A
swivelling axial stub 98 is arranged above the cogged ~heel 97. The combination, shown in Fig. 9, is formed as a single piece, according to the preferred embodiment.
This piece is inserted into the tensioning member 101, which is shown in Figs. 1 and 9. The operating rod 99 has a suspension hook 100 for engaging in the eyelet of the clip hook 94. The tensioning member 101 has a cross-section 109 which is the same as that of a runner, the cross-section 49 of which is shown in Fig. 2. The tensioning member 101 is also provided on both sides with guide grooves 40 for the toothed segments 82 of the connecting elements 77.
The construction is similar to that discussed in connection with the runner 29. Only, in the bottom surfaces of the guide grooves 40, longitudinal slots 102, which are longer then the longitudinal slots 43 of the guide grooves 40, are provided.
In the shown embodiment, the tensioning member and the end member 101 are identical. Both members are provided with threaded openings 103. In the tensioning/end member 101, there is provided a borehole 34 which was discussed in connection with the runner 29. This borehole 34 is not used for any purpose in the tensioning member 101. In the end ~` ~t ~ ~ ' ~ r, menlber 101, however, as can be seen in the right portion of Fig. 1, a rocking sha~t, consisting of a cogged wheel and a strip hook, is inserted in the borehole 34, in a manner that was discussed in the description of the runner.
Both the tensioning member 101 and the end member 101 have a second borehole which is formed as an elongate hole 106.
This elongate hole 106 is a part of a vertical retainer 104 shown in Fig. 12. This retainer 104 serves for receiving the one-piece clip hook 94 with an eyelet, which was discussed in connection with Fig. 9. Because of the one-piece structure, the cogged wheel and the strip hook cannot be fitted together, as described. In order not to make the end member 101 too big, the retainer 104 is provided, in which the one-plece clip hook 94 with an eyelet can be inserted through a guide slot 105. As shown in the lower portion of Fig. 12, the guide slot 105 is made so narrow that the swevelling ring 96 of the clip hook passes therethrough only under pressure. In the assembled condition, the cogged wheel 97 is located in the cavity 107 for the cogged wheel, and the swivelling ring 96 is located in t.he cavity 108 for the swivelling ring.
The description of the end member 01, which is shown in Fig.
10, is unnecessary because it is identical to the described ~71~ ~
tensioning me~ber 101. For attaching the end member to the end 8 of the track 6, there is provided, as shown in Fig.
].0, a screw 110 with a washer 111.
OPERATION
After the length of the track 6 and, thereby, the necessary number of runners 29 is determined, the runner train is, e.g, assembled in such a manner that the toothed segments 82 of the connecting elements 77 are inserted into the guide grooves 40 of the runners 29 and are so ligned up that the cogged wheel 68 can be inserted from above into the borehole 34 of the runner 29. This must insure that opposite teeth 71 of the gear rim 69 engage in the middle tooth space between teeth 83 of the toothed segments 82.
Then, the insertion pin 66 is inserted in the pin hole 73 of the cogged wheel from beneath, so that a coupling between the cogged wheel 68 and the toothed segments 82 is established and a desired swiveling of the cogged wheel 68 is insured by displacement of the opposite connecting elements 77 in opposite directions.
Thereafter, the connecting strips of the connecting 2 v v 71~ ~
elements 77 are clipped, by using the resilience provided by the longitudinal slots 88, in the guide grooves 40 behind the guide and support angles 86 of the adjacent front runner 29 in the runner chain.
In the guide grooves of the tensioning/end member 101, there are provided longitudinal slots for teeth of cogged wheels 68 and 97, which are connected with these members. The toothed segments 82 with the teeth 83, the resilient stops 84, the reinforced slide edges 85 as well as the guide and support angles 86, but without the following connecting element 77, are inserted in the tensioning member 101.
These toothed segments transmit, by their guide and support angles 86, the swivelling of the cogged wheel 97 to the respective first connecting elements 77 in the chain of pairs of connecting elements. The clip hook 94 with an eyelet for the first strip, as it was discussed in connection with the Fig. 12, is inserted in the tensioning member 101.
The toothed segments 82 of the last connecting elements 77 in the chain of connecting elements cooperate with the cogged wheel 68 of the last strip of the strip blind 1 in the same manner as toothed segments 82 of other connecting elements with the teeth of the cogged wheels 68 of the 2~,~`7~ ~G
runners 29~
In the mounted condition, all runner 29 of the strip blind 1 are displaced to the end 8 of the track 6 as a pack, which is displaced to the end 8 of the track by means of the operational rod 99 of the tensioning member 101. The tensioning member 101 pushes the following runners 29 one after another until forming of the pack of the runner 29 ls finished. With this, the connecting elements 77 are pushed together, whereat a configuration of connecting strips 78, base 80 and toothed segment 82, which is shown in Fig. 8, facilitates joint displacement. With a relatively small number of runners, the pushed together connecting elements 77 have only a small sidewise protrusion, so that the track cross-section shown in Fig. 2 is satisfactory. When, however, the number of runners of a strip blind is important, under circumstances, a track 6 with a larger cross-section, e.g., as shown in Fig 1, is preferred.
When the strip bind is closed, the tensioning me~ber 101 is pulled, by means of the operational rod 99, to the beginning 7 of the track 6, whereat the guide and support angles 86 associated with the toothed segments 82 in the tensioning n~ember 101, entrain the drivers 89 of the first connecting elements 77 to which the toothed segments 82 and the cogged wheel 68 of the first runner are connected. In this way, all runner 29 are pulled out of the pack one after another until the tensioning member is in its position at the beginning of the track 6 and is retained there, under circumstances, by a clamp device, not shown.
The drivers of all connecting elements 77 abut the guide and support angles 86. The swivelling action of the operational rod 99 is transmitted to all strip hooks 62 of the runner train.
In the above described embodiment, the tensioning member 101 is combined with the operational rod 99 by which, in the above-described manner, both the translational movement and the rotational movement is transmitted to the runners 29 and the strips 2, respectively, by means of the connecting elements 77.
Figs. 14-16 show another tensioning member 112 the elements of which enable transmital of translational and rotational movements to chains of connecting elements 77 movable in opposite direction. Fig. 14 show a cross-sectional view through track 6 and the tensioning element 112 which provides for movement of chains of connecting elements 77 by means of a chain 117. A cogged wheel 68, together with the swivelling ring 72 and the insertion pin of the first strip ~"~7 ~
hook 62, 63, are inserted in the borehole 34 from beneath.
The cross-section 113 of the tensioning member 112 corresponds to the cross-section 49 of a standard runner 29.
In the tensioning member 112, there is provided, in a longitudinal direction, a threaded member 123 which in the shown embodiment is formed as a screw 123 with a head 12~.
On the threaded member 123, a roller 115 with an inner thread is mounted, about the circumference 116 of which an endless chain 117 is displaced. Fig. 15 shows that this endless chain 117 includes a suspended operational loop 118, a closing run 119, and an opening run 120. The chain runs, as it is shown in Fig. 16, inside the track 6, at the end of which a reversing roller 121 is driven. The chain can also be displaced through a corresponding reveresing channel, not shown, in the end cap 20. By pulling the closing run 119, the tensioning member 112, shown in Fig. 15, is displaced leftwards whereby, as in the first embodiment, the runners 29 are also pulled to the left. A friction force between the chain 117, the roller 115 with the inner thread, and the screw 123 is a necessary precondition for this leftward movement of the tensionining member 112 and the runners 29.
When the tensioning member 112 is locked at the beginning of the track 6, further pulling of the closing run 119 overcomes the above-mentioned friction force, and the roller 115 swivells. Because the threaded member of the 2~,~7 ~
screw 123 inside the tensioning member 112 cooperates with a rotation-preventing element 114, the screw or the threaded member 123 can move in the longitudinal direction inside the tensioning member 112. With a respective construction of the tensioning member 112, the left end of the threaded member can extend through an opening 126 in the front side of the tensioning member 112. Axial displacement of the roller 115 is prevented by a ~top 127. The first connecting element 77 of a chain of connecting elements is fixedly connected with the rotation-preventing element 114 or the thxeaded member 123, so that the axial movement of the threaded member 123 is transmitted to the chain of connecting elements. As it has already been described in connection with the first embodiment, the movement of one chain of connecting elements will be transmitted, by the cogged wheels 68 in the runners 29, into the movement of the second chain of connecting elements in an opposite direction, whereby all strips 2 of the strip blind 1 will synchronously pivot. By pulling the opening run 120 of the endless chain 117, the tensioning member 112 in Fig. 15 is pulled rightwardæ whereby, as in the flrst embodlment, all runners 29 are pushed together for forming a pacX of runner at the end of the track 6~ At that, all strips should be moved laterally in a direction transvers to the track 6.
2~
~ J' ~) 7 i ~ `.
Fig. 17 shows that he connecting strips 78 of the connecting elements 77 are provided, shortly before the catches 90 of the drivers 89, with brake knobs 54. The distance between the catch 90 and an adjacent edge of the brake knob 54 corresponds to the width of the guide and support angle 86 ~hich passes into this space. An elongate slot 55 is provided in the connecting strip 78 between the brake knobs.
The elongate slot 55 can be formed as slot 91, and it is widened and open backward. The dimensioning of the slots 55 and 91 defines the brake force between the guide and support angle 86 and the braking knob 54 when the guide and support angle 86 slides past the braking knob 54.
Fig. 18 shows a cam 48 at the end of each fork arm Sl, a recess 44 in the bottom surface 33 of a runner 29 and the tensioning me~ber, an a run-on curve 56 between the back side 59 of the runner 29 and the recess 44. When the runners 29 and the tensioning member 101 are pushed together at the end 8 of the track 6 to form a pack, all cams 48 are engaged in the recesses 44 of forward runners 29. As a result, the respective friction forces between the following each other runners 29, the end member lOl and the tensioning 7 ~
member are bigger then the friction forces between the brake knobs 54 and guide and support angles 86.
Upon pulling of tensioning members 101, 112 and separate runners 29 from the runner pack, a respective connection between the following runner 29 and the runner 29 which is located in front of it in the pack, is retained until the guide and support angles 86 pass over the brake knobs 54, abut the catches 90 of drivers 89 and effect a pull.
Because the guide and support angles are locked between the catches 90 of the drivers 89 and the brake knobs 54, stable chains of connecting elements are formed, which enable pivotal movement of all strips 2 of a partially closed strip blind and which are preserved also when the runners 29 are pushed together to form a pack.
Claims
THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A strip blind with displaceable, in a track with a longitudinal slot, runners in each of which a rocking shaft, which is operationally connected with a cogged wheel and a strip hook, is arranged, and which are connected with each other by an arrangement for translational and rotational adjustment of strip hooks, wherein the end of the strip blind is fixedly connected to the end of the track and the beginning of the strip blind is provided with an adjustment mechanism, characterized in that the cogged wheel (68) is a component part of the rocking shaft (64, 66, 68, 72) and its teeth (71) meshes with the teeth (83) of oppositely arranged toothed segments (82) of which each is located at an end of a connecting element (77) which is provided with a connecting strip (78) and the free end of which is formed as a driver for an adjacent runner.
2. A strip blind according to the claim 1, characterized in that the cogged wheel (68) is arranged in a borehole (34) in the runner (29) and its teeth (71) project through longitudinal slots (43) in opposite bottom surfaces (42) of guide grooves (40) in the runner (29).
3. A strip bind according to claims 1 and 2, characterized in that the cogged wheel (68) is provided with a gear rim (69), which is associated in an assembled condition with a strip hook (62), and a swivell(ng ring (72).
4. A strip blind according to claims 1 through 3, characterized in that the cogged wheel (68) and the strip hook (62) are connected with each other by a releasable connection (67, 76).
5. A strip blind according to claim 4, characterize din that the releasable connection is a clip connection (67, 76).
6. A strip blind according to claims 4 and 5, characterized in that, the cogged wheel (68) has a pin hole (73) for a insertion pin (66) of the strip hook (62).
7. A strip blind according to claims 4 and 5, characterized in that in the inner wall (74) of a pin hole (73) in the cogged wheel (68), there are provided slots (75) with catches (76) for catch tangs (67) on an insertion pin (66) of the strip hook (62).
8. A strip blind according to claim 7, characterized in that the catch tangs (67) on the insertion pin (66) of the strip hook (62) are resilient.
9. A strip blind according to claim 8, characterized in that the guide grooves (40) with the longitudinal slots (43) in the bottom surfaces (42) are so dimensional that the teeth (83) of the toothed segments (82) on the connecting strips (78) of the connecting elements (77) mesh with the teeth (71) of the cogged wheel (68).
10. A strip blind according to claim 9, characterized in that each toothed segment (82) is arranged on a base (80) at the end of the connecting strip (78) of the connecting element (77).
11. A strip blind according to claim 10, characterized in that a side wall (81) of the base (80) for the toothed segments (82), in a mounted condition, abuts side walls (41) of its guide grooves (40) in the runner (29).
12. A strip blind according to claims 9-11, characterized in that the end of the connecting strip (78) of the connecting element (77) in the region of the toothed segments (82) has reinforced slide edges (85) which, in the mounted condition, lie in upper and lower guide channels (46,47) in the runner (29).
13. A strip blind according to claim 12, characterized in that guide/support angles (86) for the connecting strips 78 of the connecting element (77) are arranged on the reinforced slide edges (85) on the side which is remote from the toothed segment (82).
14. A strip blind according to claims 9-13, characterized in that there is provided, in each guide groove (40) in the runner (29) for the toothed segment (82), a stop (45) for a resilient stop (84) on the base (80) for the toothed segment (32).
15. A strip blind according to claims 1-14, characterized in that in the connecting strip (78) of the connecting element (77), a longitudinal slot (88), which facilitates insertion in the upper and lower guide channels (46, 47) in the runner (29) and/or behind the guide and support angles (86) on the adjacent connecting element (77), is provided.
16. A strip blind according to claims 1-15, characterized in that between the insertion pin (66) and the strip clip hook (63), a swivelling ring is provided the diameter of which (65) is smaller than the diameter (70) of the gear rim (69), and that the borehole (34) in the runner (29) have corresponding different diameters (35, 36).
17. A strip blind according to claims 1-16, characterized in that on the runner (29), side slide shoulders (57) for sliding on corresponding slide bars (17) on opposite sides of the longitudinal slot (15) in the bottom (14) of the track (6).
18. A strip blind according to claims 1-17, characterized in that on the front side (58) of the runner (29) in the region of the longitudinal slot (15) in the bottom (14) of the track (6), a fork-shaped clamp member (50) is arranged, which,in a pushed together condition of the runners (29), cooperates with the runner in front of it.
19. A strip blind according to claim 18, characterized in that above the fork-shaped clamp member (50), an adapter (53) for a corresponding opening (60) in the back side (59) of the front runner (29), is provided.
20. A strip blind according to claims 9, 6 and 16, characterized in that the swivelling ring (72) on the cogged wheel (68), the gear rim (69) and the swivelling ring (64) between the insertion pin (66) and the strip hook (62, 63) have a total height which corresponds to the height of the runner (29).
21. A strip blind according to claims 1-20, characterized in that for closing the track (6), identical end caps (20) are provided which, without carrying any functions, have reinforced intermediate walls.
22. A strip bind according to claim 21, characterized in that the end caps (20) seat in the beginning (7) and the end (8) of the track (6) with a press fit and/or screwed with the track (6).
23. A strip blind according to claims 1-22, characterized in that the cogged wheel (68) with a swivelling ring (72) and the insertion pin (66) with the swivelling ring (64) of the last strip hook (63) are located in a borehole (34) of an end member (101) the cross-section (109) of which corresponds to the cross-section of the runner (29) and which is screwed to the end (8) of the track (6).
24. A strip blind according to claims 1-23, characterized in that the cogged wheel (68) with the swivelling ring (72) and the insertion pin (66) of the first strip hook (62, 63) are (102) for teeth of the cogged wheel (97), and in a recess (107) for the cogged wheel (97) and a recess (108) for the swivelling ring (96) of which retainer, corresponding portions of the one-piece guide strip hook (93) are inserted and clipped.
27. A strip blind according to claims 23-26, characterized in that the end member (101) and the tensioning member (101) are formed identically and are provided with the borehole (34) for receiving the cogged wheel (68) with the swivelling ring (72) of the last strip hook (62), and with a retainer (104), which is provided with a side insertion slot (105), for one-piece guide strip hook (93).
28. A strip blind according to claims 18 and 29, characterized in that the fork arms (57) of the fork-shaped clamp member (50) are forwardly tapered.
29. A strip blind according to claims 1-24, characterized in that the cogged wheel (68) with the swivelling ring (72) and the insertion pin (66) of the first strip hook (62, 63) are located in a borehole (34) of the tensioning member (101) the cross-section (109) of which corresponds to the cross-section (49) of the runner (29), and wherein a clip hook of the first strip hook (62) if formed with an eyelet (94) for connection of an operational stub (99).
25. A strip blind according to claims 1-23, characterized in that cogged wheel (97) with a swivelling ring (95) and a clip hook defining the guide strip hook (93) and having an eylet (94) for connection of an operational rod (99) is formed as a single piece equipped with a swivelling ring (96) the outer diameter of which is bigger than the diameter of the cogged wheel (97) and which, in the mounted condition, is received in a corresponding swivelling retainer (104) in the tensioning member (101).
26. A strip blind according to claims 23 and 25, characterized in that for securing the cogged wheel (97), the swivelling ring (95), the clip hook with the eyelit (94) defining the guide strip hook (93), which are formed as a one piece part, a retainer (104) with an insertion slot (105) is provided, at the end, with opposite longitudinal slots received in a borehole (34) of a tensioning member (112) the cross-section (113) of which correspond to the cross-section (49) of the runner (29), and that in the tensioning member (112) in a longitudinal direction, a threaded member (123) is received on which a roller (115) with an inner thread is rotatably supported about the circumference (116) of which an endless chain (117) or the like is guided, which chain includes overchang operational loop (118), a closing run (119) and an opening run (120), and which is displacable inside the track (6) and is guided about a reversing roller (121) or a reversing channel at the end of the track (6) or in the end cap (20), and wherein a rotation-preventing element (114) connected with the threaded member (123) is provided inside the tensioning member (112), with which element (114), the first connecting element (77) of the chain of connecting elements is fixedly connected, and with which the opposite toothed segment (82) is flexibly associated.
30. A strip blind according to claim 29, characterized in that the threaded member is a screw (123) the head (124) of which is a component part of the rotation-preventing element (114).
31. A strip blind according to claims 1-30, characteriezed in that brake knobs (54) are arranged on the connecting strips (78) in front of catches (90) of drivers (89), and that at the end of each fork arm (51) a cam (48) is provided which,in pushed together condition of the runners (29), is locked in a corresponding recess (44) in the bottom surface (33) of the forwardly located runner (29).
32. A stip blind according to claim 31, characterized in that a distance between the catch (90) on the driver (89) and the brake knob (54) corresponds to the width of the guide and support angle (86) on the back side of the toothed segment (82) of the following connecting strip (78).
33. A strip blind according to claims 31 and 32, characterized in that between the brake knobs (54) in each connecting strip (78) a longitudinal slot (55, 91) is provided.
34. A strip lind according to claim 33, characterized in that the longitudinal slot (91) extends through the driver (89) with the catches (90) and is widened and open at its front end.
35. A strip blind according to claims 31-34, characterized in that a region in the bottom surface (33) of each runner (29) between the back side (59) and the recess (44) is formed as a run-on curve for the cams (48) of the fork arms (51) of a following runner (29).
36. A strip blind according to claims 31-35, characterized in that the braking force between the cams (48) at the ends of the fork arms (51) and the run-on curve (56) or the recess (44) on the bottom surface (33) of the front runner (29) is bigger than the braking force between the braking knobs (54) and the guide and support angles (86).
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A strip blind with displaceable, in a track with a longitudinal slot, runners in each of which a rocking shaft, which is operationally connected with a cogged wheel and a strip hook, is arranged, and which are connected with each other by an arrangement for translational and rotational adjustment of strip hooks, wherein the end of the strip blind is fixedly connected to the end of the track and the beginning of the strip blind is provided with an adjustment mechanism, characterized in that the cogged wheel (68) is a component part of the rocking shaft (64, 66, 68, 72) and its teeth (71) meshes with the teeth (83) of oppositely arranged toothed segments (82) of which each is located at an end of a connecting element (77) which is provided with a connecting strip (78) and the free end of which is formed as a driver for an adjacent runner.
2. A strip blind according to the claim 1, characterized in that the cogged wheel (68) is arranged in a borehole (34) in the runner (29) and its teeth (71) project through longitudinal slots (43) in opposite bottom surfaces (42) of guide grooves (40) in the runner (29).
3. A strip bind according to claims 1 and 2, characterized in that the cogged wheel (68) is provided with a gear rim (69), which is associated in an assembled condition with a strip hook (62), and a swivell(ng ring (72).
4. A strip blind according to claims 1 through 3, characterized in that the cogged wheel (68) and the strip hook (62) are connected with each other by a releasable connection (67, 76).
5. A strip blind according to claim 4, characterize din that the releasable connection is a clip connection (67, 76).
6. A strip blind according to claims 4 and 5, characterized in that, the cogged wheel (68) has a pin hole (73) for a insertion pin (66) of the strip hook (62).
7. A strip blind according to claims 4 and 5, characterized in that in the inner wall (74) of a pin hole (73) in the cogged wheel (68), there are provided slots (75) with catches (76) for catch tangs (67) on an insertion pin (66) of the strip hook (62).
8. A strip blind according to claim 7, characterized in that the catch tangs (67) on the insertion pin (66) of the strip hook (62) are resilient.
9. A strip blind according to claim 8, characterized in that the guide grooves (40) with the longitudinal slots (43) in the bottom surfaces (42) are so dimensional that the teeth (83) of the toothed segments (82) on the connecting strips (78) of the connecting elements (77) mesh with the teeth (71) of the cogged wheel (68).
10. A strip blind according to claim 9, characterized in that each toothed segment (82) is arranged on a base (80) at the end of the connecting strip (78) of the connecting element (77).
11. A strip blind according to claim 10, characterized in that a side wall (81) of the base (80) for the toothed segments (82), in a mounted condition, abuts side walls (41) of its guide grooves (40) in the runner (29).
12. A strip blind according to claims 9-11, characterized in that the end of the connecting strip (78) of the connecting element (77) in the region of the toothed segments (82) has reinforced slide edges (85) which, in the mounted condition, lie in upper and lower guide channels (46,47) in the runner (29).
13. A strip blind according to claim 12, characterized in that guide/support angles (86) for the connecting strips 78 of the connecting element (77) are arranged on the reinforced slide edges (85) on the side which is remote from the toothed segment (82).
14. A strip blind according to claims 9-13, characterized in that there is provided, in each guide groove (40) in the runner (29) for the toothed segment (82), a stop (45) for a resilient stop (84) on the base (80) for the toothed segment (32).
15. A strip blind according to claims 1-14, characterized in that in the connecting strip (78) of the connecting element (77), a longitudinal slot (88), which facilitates insertion in the upper and lower guide channels (46, 47) in the runner (29) and/or behind the guide and support angles (86) on the adjacent connecting element (77), is provided.
16. A strip blind according to claims 1-15, characterized in that between the insertion pin (66) and the strip clip hook (63), a swivelling ring is provided the diameter of which (65) is smaller than the diameter (70) of the gear rim (69), and that the borehole (34) in the runner (29) have corresponding different diameters (35, 36).
17. A strip blind according to claims 1-16, characterized in that on the runner (29), side slide shoulders (57) for sliding on corresponding slide bars (17) on opposite sides of the longitudinal slot (15) in the bottom (14) of the track (6).
18. A strip blind according to claims 1-17, characterized in that on the front side (58) of the runner (29) in the region of the longitudinal slot (15) in the bottom (14) of the track (6), a fork-shaped clamp member (50) is arranged, which,in a pushed together condition of the runners (29), cooperates with the runner in front of it.
19. A strip blind according to claim 18, characterized in that above the fork-shaped clamp member (50), an adapter (53) for a corresponding opening (60) in the back side (59) of the front runner (29), is provided.
20. A strip blind according to claims 9, 6 and 16, characterized in that the swivelling ring (72) on the cogged wheel (68), the gear rim (69) and the swivelling ring (64) between the insertion pin (66) and the strip hook (62, 63) have a total height which corresponds to the height of the runner (29).
21. A strip blind according to claims 1-20, characterized in that for closing the track (6), identical end caps (20) are provided which, without carrying any functions, have reinforced intermediate walls.
22. A strip bind according to claim 21, characterized in that the end caps (20) seat in the beginning (7) and the end (8) of the track (6) with a press fit and/or screwed with the track (6).
23. A strip blind according to claims 1-22, characterized in that the cogged wheel (68) with a swivelling ring (72) and the insertion pin (66) with the swivelling ring (64) of the last strip hook (63) are located in a borehole (34) of an end member (101) the cross-section (109) of which corresponds to the cross-section of the runner (29) and which is screwed to the end (8) of the track (6).
24. A strip blind according to claims 1-23, characterized in that the cogged wheel (68) with the swivelling ring (72) and the insertion pin (66) of the first strip hook (62, 63) are (102) for teeth of the cogged wheel (97), and in a recess (107) for the cogged wheel (97) and a recess (108) for the swivelling ring (96) of which retainer, corresponding portions of the one-piece guide strip hook (93) are inserted and clipped.
27. A strip blind according to claims 23-26, characterized in that the end member (101) and the tensioning member (101) are formed identically and are provided with the borehole (34) for receiving the cogged wheel (68) with the swivelling ring (72) of the last strip hook (62), and with a retainer (104), which is provided with a side insertion slot (105), for one-piece guide strip hook (93).
28. A strip blind according to claims 18 and 29, characterized in that the fork arms (57) of the fork-shaped clamp member (50) are forwardly tapered.
29. A strip blind according to claims 1-24, characterized in that the cogged wheel (68) with the swivelling ring (72) and the insertion pin (66) of the first strip hook (62, 63) are located in a borehole (34) of the tensioning member (101) the cross-section (109) of which corresponds to the cross-section (49) of the runner (29), and wherein a clip hook of the first strip hook (62) if formed with an eyelet (94) for connection of an operational stub (99).
25. A strip blind according to claims 1-23, characterized in that cogged wheel (97) with a swivelling ring (95) and a clip hook defining the guide strip hook (93) and having an eylet (94) for connection of an operational rod (99) is formed as a single piece equipped with a swivelling ring (96) the outer diameter of which is bigger than the diameter of the cogged wheel (97) and which, in the mounted condition, is received in a corresponding swivelling retainer (104) in the tensioning member (101).
26. A strip blind according to claims 23 and 25, characterized in that for securing the cogged wheel (97), the swivelling ring (95), the clip hook with the eyelit (94) defining the guide strip hook (93), which are formed as a one piece part, a retainer (104) with an insertion slot (105) is provided, at the end, with opposite longitudinal slots received in a borehole (34) of a tensioning member (112) the cross-section (113) of which correspond to the cross-section (49) of the runner (29), and that in the tensioning member (112) in a longitudinal direction, a threaded member (123) is received on which a roller (115) with an inner thread is rotatably supported about the circumference (116) of which an endless chain (117) or the like is guided, which chain includes overchang operational loop (118), a closing run (119) and an opening run (120), and which is displacable inside the track (6) and is guided about a reversing roller (121) or a reversing channel at the end of the track (6) or in the end cap (20), and wherein a rotation-preventing element (114) connected with the threaded member (123) is provided inside the tensioning member (112), with which element (114), the first connecting element (77) of the chain of connecting elements is fixedly connected, and with which the opposite toothed segment (82) is flexibly associated.
30. A strip blind according to claim 29, characterized in that the threaded member is a screw (123) the head (124) of which is a component part of the rotation-preventing element (114).
31. A strip blind according to claims 1-30, characteriezed in that brake knobs (54) are arranged on the connecting strips (78) in front of catches (90) of drivers (89), and that at the end of each fork arm (51) a cam (48) is provided which,in pushed together condition of the runners (29), is locked in a corresponding recess (44) in the bottom surface (33) of the forwardly located runner (29).
32. A stip blind according to claim 31, characterized in that a distance between the catch (90) on the driver (89) and the brake knob (54) corresponds to the width of the guide and support angle (86) on the back side of the toothed segment (82) of the following connecting strip (78).
33. A strip blind according to claims 31 and 32, characterized in that between the brake knobs (54) in each connecting strip (78) a longitudinal slot (55, 91) is provided.
34. A strip lind according to claim 33, characterized in that the longitudinal slot (91) extends through the driver (89) with the catches (90) and is widened and open at its front end.
35. A strip blind according to claims 31-34, characterized in that a region in the bottom surface (33) of each runner (29) between the back side (59) and the recess (44) is formed as a run-on curve for the cams (48) of the fork arms (51) of a following runner (29).
36. A strip blind according to claims 31-35, characterized in that the braking force between the cams (48) at the ends of the fork arms (51) and the run-on curve (56) or the recess (44) on the bottom surface (33) of the front runner (29) is bigger than the braking force between the braking knobs (54) and the guide and support angles (86).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4115585.8 | 1991-05-13 | ||
| DE19914115585 DE4115585A1 (en) | 1991-05-13 | 1991-05-13 | Track and operating mechanised for vertical strip blind - includes strip support component and blind operating system |
| DEP4143300.9 | 1991-12-19 | ||
| DE19914143300 DE4143300A1 (en) | 1991-05-13 | 1991-12-19 | Slat blind with runners engaging in track |
| DEP4214764.6 | 1992-05-10 | ||
| DE4214764 | 1992-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2087186A1 true CA2087186A1 (en) | 1992-11-14 |
Family
ID=27202467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2087186 Abandoned CA2087186A1 (en) | 1991-05-13 | 1992-05-12 | Strip blind |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0539556A1 (en) |
| AU (1) | AU1690692A (en) |
| CA (1) | CA2087186A1 (en) |
| WO (1) | WO1992020894A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2313141B (en) * | 1996-05-16 | 2000-06-28 | Eclipse Blinds Ltd | Vertical blinds |
| GB2416983B (en) * | 2005-09-14 | 2007-09-05 | Shan-Chi Chuang | Vertical curtain |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2510888A1 (en) * | 1974-03-19 | 1975-10-09 | Reko Gmbh | Venetian blind with travelling and tilting slats - rack and pinion drive actuates travelling and tilting movement |
| US4316493B1 (en) * | 1977-08-15 | 1997-06-24 | Newell Operating Co | Vertical blind controls |
| IT8217722A0 (en) * | 1982-06-29 | 1982-06-29 | Menichetti Pier Luigi | DEVICE TO SLIDE AND ROTATE HANGING STRIPS FOR VERTICAL AWNINGS |
| DE3820945A1 (en) * | 1988-06-21 | 1990-01-04 | Gardinia Vorhangschinenfab | Vertical screen installation |
-
1992
- 1992-05-12 AU AU16906/92A patent/AU1690692A/en not_active Abandoned
- 1992-05-12 WO PCT/EP1992/001048 patent/WO1992020894A1/en not_active Application Discontinuation
- 1992-05-12 CA CA 2087186 patent/CA2087186A1/en not_active Abandoned
- 1992-05-12 EP EP19920910195 patent/EP0539556A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992020894A1 (en) | 1992-11-26 |
| AU1690692A (en) | 1992-12-30 |
| EP0539556A1 (en) | 1993-05-05 |
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