EP0915214B1 - Sun blind with locking device - Google Patents
Sun blind with locking device Download PDFInfo
- Publication number
- EP0915214B1 EP0915214B1 EP19980203636 EP98203636A EP0915214B1 EP 0915214 B1 EP0915214 B1 EP 0915214B1 EP 19980203636 EP19980203636 EP 19980203636 EP 98203636 A EP98203636 A EP 98203636A EP 0915214 B1 EP0915214 B1 EP 0915214B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide
- sun blind
- locking
- web
- longitudinal
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
- E06B9/86—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against unauthorised opening
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
- E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
- E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
- E04F10/0607—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with guiding-sections for supporting the movable end of the blind
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
- E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
- E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
- E04F10/0644—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
- E04F10/0655—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind acting on the movable end, e.g. front bar
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- 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
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
- E06B2009/801—Locking arrangements
- E06B2009/805—Locking arrangements located on or in the guides
Definitions
- the invention relates to a sun blind having a fixed, rotatably mounted winding shaft for winding up and unwinding a web of material, one end of which web is fixed to the said winding shaft and the other end of which web is attached to a bottom frame, the bottom frame being displaceable, via guide blocks, in side guides which are disposed on both sides of an unwound web of material, and having a locking device in at least one of the said side guides for locking the web of material so that it is wind resistant, which locking device is actuated by displacement of the said guide blocks.
- Such a sun blind with locking device is known, for example, from EP-A-0,315,036.
- This known sun blind is a lockable vertical screen.
- the web of material (or segments thereof, as in a Venetian blind screen) is attached on the underside to a bottom member and at the sides it runs in guide rails.
- a locking system is provided in order to lock the screen so that it is wind resistant.
- This known locking system comprises a projection which is attached to an arm and is arranged in a guide rail.
- a guide block which is guided through the guide rail is attached to both ends of the bottom member.
- a projection track is provided for the projection which is attached to an arm.
- the said projection When lowering the screen, the said projection passes into the projection track, which projection track is provided with a shape (comparable to an asymmetrical heart shape) which is such that the projection reaches the highest point in, for example, the left-hand portion of this heart shape and thus the screen is unable to descend any further.
- the projection By then pulling the screen back upwards slightly, the projection is guided towards a recess which is situated opposite the said highest point and is thus locked, holding the screen taut. If such a screen has to be moved upwards again, it is first allowed to descend, with the result that the projection is moved into the right-hand section of the said projection track, after which the screen can be pulled upwards, the projection running through the right-hand section of the projection track.
- EP-A-0,315,036 is also disclosed another embodiment of a sun blind with locking device with the features in the preamble of claim 1, wherein the winding shaft is provided with a control disc having a number of concentric guide grooves and transition grooves connecting the guide grooves, in a flat surface thereof.
- Co-operating with this control disc is a locking bar made from a spring steel strip.
- An undulated section of this bar extends in the side guide over the whole length.
- the top of this bar is provided with a nut, which co-operates with the grooves in the control disc.
- the side guide is provided with an undulated insert similar to the undulated section of the locking gliding bar and co-acting therewith.
- guide blocks attached to the bottom profile of the sun blind are displaceable in the side guide.
- these guide blocks can be freely displaced when the waves of the undulated section of the locking bar are positioned on top of the waves of the insert. This is ascertained by the action of the nut in the grooves of the control disc. In the locking position the valleys of the locking bar are on top of the waves of the insert. Again this is ascertained by the action of the nut in the respective grooves of the control disc.
- the locking device comprises a locking member, e.g. a hook wire element, which is mounted at the lower end of a side guide.
- a catch member is mounted on the lateral end of the bottom profile, which engages within the side guide. This catch member has a complex shaped groove wherein the locking member is displaceable to lock and release the window covering.
- a drawback of all these known locking devices is the presence and structure of the projection track, guiding and transition grooves and complex shaped groove respectively.
- a block, disc or member of this nature comprising such a track or groove is expensive to produce.
- the overall design of these known lockking devices is relatively complicated.
- the object of the present invention is to provide a sun blind with a wind-resistant locking device which is of simple design and the components of which can be produced relatively inexpensively.
- the sunblind according to the invention is defined in claim 1.
- the locking device comprises a resilient locking member and a resilient operating member.
- the guide block which is guided in a side guide, firstly comes into contact with the resilient locking member.
- the inherent weight of the bottom frame is sufficient to push the resilient locking member away, so that the guide block can pass through via the first pass-through position.
- this member owing to its spring action, resumes its original position, so that the block is prevented from moving back (i.e. in the opposite direction to the said first direction of movement) in the locking position.
- a locking device according to the invention is preferably present in both side guides.
- a guide block comprises a T-shaped projection, the top side pieces of which are situated in the side guide and the leg of which extends through the longitudinal groove.
- the locking device is advantageously designed in such a way that, in the said first pass-through position, the top side pieces of the T-shaped projection are situated between the locking member and the operating member, as seen in the longitudinal direction of the leg of the T-shaped projection.
- the top side pieces of the projection are situated between the wall of the longitudinal-groove side of the side guide and the operating member, as seen in the direction defined above.
- the resilient locking member is a leaf spring (also referred to below as the top spring), one end of which is attached to the base side of the side guide and the other, free end of which, in the at-rest position, extends from the base side at an angle towards the longitudinal-groove side of the side guide, in the direction of the first direction of movement.
- a leaf spring of this nature can be produced and attached in the side guide in a simple and inexpensive manner.
- a reinforcement profile may be attached to the free end of the leaf spring, in order to counteract permanent deformation. This arrangement of the leaf spring allows simple passage of the guide block in the first pass-through position, in which the spring is depressed away by the guide block. In the locking position, the guide block runs up against the leaf spring, which has, by then, resumed its original position.
- the operating member is a wire spring (also referred to below as the bottom spring), which is also attached to the base side of the side guide and a first leg of which, in the at-rest position, extends as far as the longitudinal-groove side of the side guide, in such a manner that the first leg is situated between the free end of the top spring and the longitudinal-groove side of the side guide.
- a recess may be provided in the side guide, in which recess a first leg of this nature is positioned, the free end of the top spring extending as far as the longitudinal-groove side in the vicinity of this recess.
- the wire spring comprises an operating surface which lies between the free end of the top spring and the longitudinal-groove side of the side guide, thus ensuring correct engagement between the resilient members during the second pass-through position.
- the wire spring furthermore comprises a second free leg which extends from the longitudinal-groove side of the side guide, in the first direction of movement, towards the base side of the side guide.
- the role of this second free leg is twofold. In the first pass-through position, the guide block comes into contact with one side of this leg of the bottom spring, so that it is pulled open counter to the action of the spring and presses the guide block toward the base side of the side guide. This ensures that the guide block cannot move aside in the side guide within the play which is present, and the guide block is locked stably in the locking position by the locking member.
- This design also allows the guide block, in the second pass-through position, to actuate the operating member correctly by engaging thereon on the other side of the second free leg.
- the locking member and the operating member therefor are made from a single part.
- Fig. 1 shows part of an embodiment of the sun blind 5 according to the invention, in the first pass-through position.
- the vertical sun blind comprises a web of material 1, in the case illustrated canvas, which is made from a single piece. However, the web of material may also comprise segments which are connected to one another.
- the top end of 0 the web of material is attached to a fixed, rotatably mounted winding shaft (not shown), which is controlled by means of a standard electrical or manual actuator.
- the other end of the web of material 1 is fixed to a bottom profile 2.
- Guide blocks 3, which are guided inside guides 4, are 5 attached to both sides of the bottom profile 2.
- Fig. 1 and the figures to be discussed below show only the left-hand side.
- the side guides 4 comprise a box profile which is provided, on the side 5 facing towards the web of material 1 (hereinafter longitudinal-groove 0 side), with a longitudinal groove.
- the guide block 3 comprises a T-shaped projection 6, the top side pieces 7 of which are situated in the side guide 4 and the leg 8 of which can move in the longitudinal groove.
- the resilient locking member 10 is a leaf spring which at one end 12 is fixed to the base side 13 of the side guide 4 with the aid of suitable means, for example one or more 0 screws. Adjacent to end 12, the leaf spring 10 comprises a part 14 which extends at an angle, from the base side 13, towards the longitudinal-groove side 5. In order to reinforce the leaf spring 10, a reinforcement profile 15 is used, in order to fit the end 12 between the base side 13 5 and the reinforcement profile 15, for example an aluminium plate. A similar profile 15 is attached to the part 14. The at-rest position is indicated by dashed lines. Beneath the leaf spring 10, the operating member 11 is attached to the base side 13 of the guide 4.
- the operating member 11 is a wire spring, the design of which will be explained in more detail with reference, inter alia, to Fig. 5.
- the wire spring comprises a loop 16, with the aid of which the wire spring 11 is fixed in the side guide 4, for example by means of a screw.
- the wire spring 11 comprises sections 18 which run at an angle upwards, from the base side 13, towards the longitudinal-groove side 5, along the inner side walls 17 of the side guide 4, which sections merge into first free legs 19 which are positioned against the longitudinal-groove side 5 of the guide 4.
- the free legs 19 merge into second free legs 21, which extend back towards the base side 13 of the guide 4 and towards the loop 16, but at a slightly smaller angle than the sections 18 with respect to the longitudinal axis of the guide 4. In this way, it is ensured that the projection 6 will move past the bottom spring successfully, both from the locking position towards the uncoupling position and from the uncoupling position towards the initial position.
- the locking device 9 operates as follows. With the web of material 1 rolled up, the leaf spring 10 and the wire spring 11 are situated in the initial position which is indicated by dashed lines. If the sun blind is then lowered, the projection 6 comes into contact with the leaf spring 10, specifically the part 14 thereof, and presses the part 14 aside, so that the projection 6 can move past. At the same time, the second limbs 21 of the wire spring 11 are pressed away and pulled open. In the figures, the directions of movement are indicated by arrows. When the projection 6 has moved past the leaf spring 10, the locking member 10 springs back, thus blocking the projection 6 from moving upwards. This locking position is illustrated in Fig. 2, in which the second legs 21 of the wire spring 11 are still in the pulled-open position, thus pressing the projection 6 sideways.
- the screen is lowered further, so that the projection 6 also moves past the operating member 11.
- the springs 10 and 11 move back into the initial position, as can be seen from Fig. 3.
- the screen is then moved upwards, the top side pieces 7 of the projection 6 engage on the second free legs 21 of the wire spring 11 and push them aside.
- the first legs 19 thus come away from the longitudinal-groove side 5 and in turn push the part 14 of the leaf spring 10 aside, so that the projection 6 can move past the locking device (cf. Fig. 4).
- FIG. 5 shows a perspective view, partially in section.
- identical components are denoted by identical reference numerals.
- the projection is not illustrated.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Building Awnings And Sunshades (AREA)
- Blinds (AREA)
Description
- The invention relates to a sun blind having a fixed, rotatably mounted winding shaft for winding up and unwinding a web of material, one end of which web is fixed to the said winding shaft and the other end of which web is attached to a bottom frame, the bottom frame being displaceable, via guide blocks, in side guides which are disposed on both sides of an unwound web of material, and having a locking device in at least one of the said side guides for locking the web of material so that it is wind resistant, which locking device is actuated by displacement of the said guide blocks.
- Such a sun blind with locking device is known, for example, from EP-A-0,315,036. This known sun blind is a lockable vertical screen. The web of material (or segments thereof, as in a Venetian blind screen) is attached on the underside to a bottom member and at the sides it runs in guide rails. Furthermore, a locking system is provided in order to lock the screen so that it is wind resistant. This known locking system comprises a projection which is attached to an arm and is arranged in a guide rail. Furthermore, a guide block which is guided through the guide rail is attached to both ends of the bottom member. In at least one block, a projection track is provided for the projection which is attached to an arm. When lowering the screen, the said projection passes into the projection track, which projection track is provided with a shape (comparable to an asymmetrical heart shape) which is such that the projection reaches the highest point in, for example, the left-hand portion of this heart shape and thus the screen is unable to descend any further. By then pulling the screen back upwards slightly, the projection is guided towards a recess which is situated opposite the said highest point and is thus locked, holding the screen taut. If such a screen has to be moved upwards again, it is first allowed to descend, with the result that the projection is moved into the right-hand section of the said projection track, after which the screen can be pulled upwards, the projection running through the right-hand section of the projection track.
- In EP-A-0,315,036 is also disclosed another embodiment of a sun blind with locking device with the features in the preamble of
claim 1, wherein the winding shaft is provided with a control disc having a number of concentric guide grooves and transition grooves connecting the guide grooves, in a flat surface thereof. Co-operating with this control disc is a locking bar made from a spring steel strip. An undulated section of this bar extends in the side guide over the whole length. The top of this bar is provided with a nut, which co-operates with the grooves in the control disc. The side guide is provided with an undulated insert similar to the undulated section of the locking gliding bar and co-acting therewith. Furthermore guide blocks attached to the bottom profile of the sun blind are displaceable in the side guide. In this embodiment these guide blocks can be freely displaced when the waves of the undulated section of the locking bar are positioned on top of the waves of the insert. This is ascertained by the action of the nut in the grooves of the control disc. In the locking position the valleys of the locking bar are on top of the waves of the insert. Again this is ascertained by the action of the nut in the respective grooves of the control disc. - In EP-A-305 081 a somewhat similar retractable window covering assembly, such as a blind or screen assembly is disclosed. Again the locking device comprises a locking member, e.g. a hook wire element, which is mounted at the lower end of a side guide. A catch member is mounted on the lateral end of the bottom profile, which engages within the side guide. This catch member has a complex shaped groove wherein the locking member is displaceable to lock and release the window covering.
- A drawback of all these known locking devices is the presence and structure of the projection track, guiding and transition grooves and complex shaped groove respectively. A block, disc or member of this nature comprising such a track or groove is expensive to produce. And the overall design of these known lockking devices is relatively complicated.
- The object of the present invention is to provide a sun blind with a wind-resistant locking device which is of simple design and the components of which can be produced relatively inexpensively.
- The sunblind according to the invention is defined in
claim 1. - In the sun blind according to the invention, which may be a so-called "screen", roller blind, roller shutter or combination thereof, with a manual or electric actuator which is known per se, the locking device comprises a resilient locking member and a resilient operating member. When the sun blind is being lowered from the at-rest position, the guide block, which is guided in a side guide, firstly comes into contact with the resilient locking member. The inherent weight of the bottom frame is sufficient to push the resilient locking member away, so that the guide block can pass through via the first pass-through position. As soon as the block has moved past the locking member, this member, owing to its spring action, resumes its original position, so that the block is prevented from moving back (i.e. in the opposite direction to the said first direction of movement) in the locking position. If necessary, a slight return movement may be permissible in order to pull the web of material taut. In order to release the locking, the sun blind is moved further downwards, so that the guide block also moves beyond the operating member. If the sun blind is then pulled upwards, the guide block comes into contact with the operating member, which is depressed away, counter to the spring action, by the block. In the process, the operating member engages on the locking member in such a way that the guide block can be guided beyond the locking device, via the second pass-through position. Such a design of the locking mechanism made from spring materials is simple and can be produced at much lower cost than the locking device described above having a projection guided in a projection track, in accordance with EP-A-0,315,036.
- In order to lock the web of material on both sides so that it is wind resistant, a locking device according to the invention is preferably present in both side guides.
- The block, which is guided in the side guide, has a shape which is such that, in the installed position, it engages on the inner wall of the side guide, since otherwise it could come out of the guide via the longitudinal groove. Advantageously, a guide block comprises a T-shaped projection, the top side pieces of which are situated in the side guide and the leg of which extends through the longitudinal groove.
- Furthermore, the locking device is advantageously designed in such a way that, in the said first pass-through position, the top side pieces of the T-shaped projection are situated between the locking member and the operating member, as seen in the longitudinal direction of the leg of the T-shaped projection.
- In the second pass-through position, the top side pieces of the projection are situated between the wall of the longitudinal-groove side of the side guide and the operating member, as seen in the direction defined above.
- In a preferred embodiment of the locking device, which is used in the sun blind according to the invention, the resilient locking member is a leaf spring (also referred to below as the top spring), one end of which is attached to the base side of the side guide and the other, free end of which, in the at-rest position, extends from the base side at an angle towards the longitudinal-groove side of the side guide, in the direction of the first direction of movement. A leaf spring of this nature can be produced and attached in the side guide in a simple and inexpensive manner. If desired, a reinforcement profile may be attached to the free end of the leaf spring, in order to counteract permanent deformation. This arrangement of the leaf spring allows simple passage of the guide block in the first pass-through position, in which the spring is depressed away by the guide block. In the locking position, the guide block runs up against the leaf spring, which has, by then, resumed its original position.
- Advantageously, the operating member is a wire spring (also referred to below as the bottom spring), which is also attached to the base side of the side guide and a first leg of which, in the at-rest position, extends as far as the longitudinal-groove side of the side guide, in such a manner that the first leg is situated between the free end of the top spring and the longitudinal-groove side of the side guide. If desired, a recess may be provided in the side guide, in which recess a first leg of this nature is positioned, the free end of the top spring extending as far as the longitudinal-groove side in the vicinity of this recess.
- Preferably, the wire spring comprises an operating surface which lies between the free end of the top spring and the longitudinal-groove side of the side guide, thus ensuring correct engagement between the resilient members during the second pass-through position.
- Preferably, the wire spring furthermore comprises a second free leg which extends from the longitudinal-groove side of the side guide, in the first direction of movement, towards the base side of the side guide. The role of this second free leg is twofold. In the first pass-through position, the guide block comes into contact with one side of this leg of the bottom spring, so that it is pulled open counter to the action of the spring and presses the guide block toward the base side of the side guide. This ensures that the guide block cannot move aside in the side guide within the play which is present, and the guide block is locked stably in the locking position by the locking member. This design also allows the guide block, in the second pass-through position, to actuate the operating member correctly by engaging thereon on the other side of the second free leg.
- According to a further embodiment, the locking member and the operating member therefor are made from a single part.
- The invention will be explained in more detail below with reference to the appended drawing, in which:
- Fig. 1 shows the first pass-through position of an embodiment of a sun blind with a locking device according to the invention;
- Fig. 2 shows the locking position of the embodiment illustrated in Fig. 1;
- Fig. 3 shows the uncoupling position of the embodiment illustrated in Fig. 1;
- Fig. 4 shows the second pass-through position of the embodiment illustrated in Fig. 1; and
- Fig. 5 shows a diagrammatic, perspective view of the locking device in accordance with Fig. 1.
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- Fig. 1 shows part of an embodiment of the sun blind 5 according to the invention, in the first pass-through position. The vertical sun blind comprises a web of
material 1, in the case illustrated canvas, which is made from a single piece. However, the web of material may also comprise segments which are connected to one another. The top end of 0 the web of material is attached to a fixed, rotatably mounted winding shaft (not shown), which is controlled by means of a standard electrical or manual actuator. The other end of the web ofmaterial 1 is fixed to abottom profile 2. Guide blocks 3, which are guided inside guides 4, are 5 attached to both sides of thebottom profile 2. For the sake of simplicity, Fig. 1 and the figures to be discussed below show only the left-hand side. The side guides 4 comprise a box profile which is provided, on theside 5 facing towards the web of material 1 (hereinafter longitudinal-groove 0 side), with a longitudinal groove. In the embodiment illustrated, theguide block 3 comprises a T-shaped projection 6, the top side pieces 7 of which are situated in theside guide 4 and theleg 8 of which can move in the longitudinal groove. A locking device 9, which comprises a 5 resilient lockingmember 10 and aresilient operating member 11, is disposed in theside guide 4. - The
resilient locking member 10 is a leaf spring which at oneend 12 is fixed to thebase side 13 of theside guide 4 with the aid of suitable means, for example one or more 0 screws. Adjacent to end 12, theleaf spring 10 comprises apart 14 which extends at an angle, from thebase side 13, towards the longitudinal-groove side 5. In order to reinforce theleaf spring 10, areinforcement profile 15 is used, in order to fit theend 12 between thebase side 13 5 and thereinforcement profile 15, for example an aluminium plate. Asimilar profile 15 is attached to thepart 14. The at-rest position is indicated by dashed lines. Beneath theleaf spring 10, the operatingmember 11 is attached to thebase side 13 of theguide 4. In this embodiment, the operatingmember 11 is a wire spring, the design of which will be explained in more detail with reference, inter alia, to Fig. 5. The wire spring comprises aloop 16, with the aid of which thewire spring 11 is fixed in theside guide 4, for example by means of a screw. Furthermore, thewire spring 11 comprisessections 18 which run at an angle upwards, from thebase side 13, towards the longitudinal-groove side 5, along theinner side walls 17 of theside guide 4, which sections merge into firstfree legs 19 which are positioned against the longitudinal-groove side 5 of theguide 4. Towards the inside with respect to thesections 18, thefree legs 19 merge into secondfree legs 21, which extend back towards thebase side 13 of theguide 4 and towards theloop 16, but at a slightly smaller angle than thesections 18 with respect to the longitudinal axis of theguide 4. In this way, it is ensured that the projection 6 will move past the bottom spring successfully, both from the locking position towards the uncoupling position and from the uncoupling position towards the initial position. - The locking device 9 operates as follows. With the web of
material 1 rolled up, theleaf spring 10 and thewire spring 11 are situated in the initial position which is indicated by dashed lines. If the sun blind is then lowered, the projection 6 comes into contact with theleaf spring 10, specifically thepart 14 thereof, and presses thepart 14 aside, so that the projection 6 can move past. At the same time, thesecond limbs 21 of thewire spring 11 are pressed away and pulled open. In the figures, the directions of movement are indicated by arrows. When the projection 6 has moved past theleaf spring 10, the lockingmember 10 springs back, thus blocking the projection 6 from moving upwards. This locking position is illustrated in Fig. 2, in which thesecond legs 21 of thewire spring 11 are still in the pulled-open position, thus pressing the projection 6 sideways. - If the sun blind is to be raised, it is firstly necessary to release the locking. To do this, the screen is lowered further, so that the projection 6 also moves past the operating
member 11. As a result, thesprings free legs 21 of thewire spring 11 and push them aside. Thefirst legs 19 thus come away from the longitudinal-groove side 5 and in turn push thepart 14 of theleaf spring 10 aside, so that the projection 6 can move past the locking device (cf. Fig. 4). - In order to clarify the design of the locking device, Fig. 5 shows a perspective view, partially in section. In this figure, identical components are denoted by identical reference numerals. For the sake of clarity, the projection is not illustrated.
- It will be clear to the person skilled in the art that the sun blind according to the invention is not limited to the embodiment of the locking device which is illustrated in the figures, but by the scope of the appended claims. Numerous other forms of the resilient members may be considered. For example, another possible form is a locking device in which both members are produced from a single part.
Claims (11)
- Sun blind having a fixed, rotatably mounted winding shaft for winding up and unwinding a web of material (1), one end of which web is fixed to the said winding shaft and the other end of which web is attached to a bottom frame (2), the bottom frame (2) being displaceable, via guide blocks (3), in side guides (4) which are disposed on both sides of an unwound web of material, and having a locking device (9) in at least one of the said side guides (4) for locking the web of material (1) so that it is wind resistant, which locking device (9) is actuated by displacement of the said guide blocks (3), wherein the side guides (4) comprise a box profile with a longitudinal groove, in which a guide block (3) extends through the longitudinal groove and engages on the inner wall of the box profile of a side guide, and the locking device comprises a resilient locking member (10) characterized in that the locking device also comprises a resilient operating member (11), said resilient locking member (10) and said resilient operating member (11) being designed in such a way that, when unwinding the web, a guide block (3), during movement in a first direction of movement from a starting position with the web of material wound up, presses away said resilient locking member (10) so that said guide block (3) moves past the locking member (10) via a first pass-through position of the locking device (9), the resilient locking member (10) then resuming its at-rest position so that the guide block (3) is prevented from moving back and is locked in a locking position, and when the web is to be wound up, initially said locking is released by moving the guide block (3), further in the said first direction of movement beyond the operating member (11) into an unlocked position, and then said block (3) is moved, in the opposite direction to the first direction of movement, via a second pass-through position of the locking device (9), said guide block (3) actuating the operating member (11) in such a manner that the operating member (11) moves the locking member (10) out of the path of the guide block (3) which is moving past.
- Sun blind according to claim 1, characterized in that said guide block (3) to be locked comprises a T-shaped projection (6), the top side pieces (7) of which are situated in a side guide (4) and the leg (8) of which extends through the longitudinal groove.
- Sun blind according to claim 2, characterized in that, in the first pass-through position, the projection (6) is situated between the locking member (10) and the operating member (11), as seen in the longitudinal direction of the leg (8) of the projection (6).
- Sun blind according to one of claims 2-3, characterized in that, in the second pass-through position, the projection (6) is situated between the inner wall (5) of a side guide (4) and the operating member (11), as seen in a longitudinal direction of the leg (8) of the projection (6).
- Sun blind according to one of the preceding claims, characterized in that the resilient locking member (10) is a leaf spring, one end (12) of which is attached to the base side (13) of the side guide (4) and the other, free end (14) of which, in the at-rest position, extends from the base side (13) at an angle towards the longitudinal-groove side (5) of the side guide (4), in the direction of the first direction of movement.
- Sun blind according to claim 5, characterized in that the operating member (11) is a wire spring, which is attached to the base side (13) of a side guide (4), and a first leg (19) of which, in the at-rest position, reaches as far as the longitudinal-groove side (5) at the location of the free end (14) of the leaf spring (10).
- Sun blind according to claim 6, characterized in that said wire spring (11) has an operating surface, which lies between the free end (14) of the leaf spring (10) and the longitudinal-groove side (5) of the side guide (4).
- Sun blind according to one of the claims 6 or 7, characterized in that the wire spring (11) comprises a second free leg (21) which extends, from the longitudinal-groove side (5) of the side guide (4), in the first direction of movement, towards the base side (13) of the guide (4).
- Sun blind according to claim 8, characterized in that the wire spring (11) comprises a loop (16) for fastening the wire spring to a side guide (4), and that the second free leg (21) also extends towards said loop (16).
- Sun blind according to claim 5, characterized in that a reinforcement profile (15) is provided on the free end (14) of the leaf spring (10).
- Sun blind according to one of the preceding claims, characterized in that the locking member (10) and the operating member (11) therefor are made from a single part.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1007445 | 1997-11-04 | ||
NL1007445A NL1007445C2 (en) | 1997-11-04 | 1997-11-04 | Sun protection with blocking device. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0915214A1 EP0915214A1 (en) | 1999-05-12 |
EP0915214B1 true EP0915214B1 (en) | 2003-10-01 |
Family
ID=19765952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980203636 Expired - Lifetime EP0915214B1 (en) | 1997-11-04 | 1998-10-27 | Sun blind with locking device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0915214B1 (en) |
DE (1) | DE69818609T2 (en) |
NL (1) | NL1007445C2 (en) |
NO (1) | NO985031L (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1319795B1 (en) * | 2001-12-17 | 2014-04-02 | Becker-Antriebe GmbH | Tube drive apparatus with control system in a shading or darkening device |
ES1053489Y (en) * | 2002-11-22 | 2003-08-01 | Llaza Sa | VERTICAL FOLDING WITH AUTOMATIC DEVICE FOR TENSED FIXATION IN PARTIAL OR FULLY EXTENDED POSITION. |
FR2966189B1 (en) * | 2010-10-15 | 2012-11-30 | Somfy Sas | DEVICE FOR LOCKING A CHARGE BAR OF A SCREEN AND SOLAR CLOSURE OR PROTECTION PLANT EQUIPPED WITH SUCH A LOCK DEVICE |
FR3009577B1 (en) * | 2013-08-06 | 2016-02-12 | Zurfluh Feller | ROLLER SHUTTER INSTALLATION |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3214092A1 (en) * | 1982-04-16 | 1983-10-20 | Alukon F. Grashei Kg, 8671 Konradsreuth | DEVICE FOR LIMITING THE REWINDING MOVEMENT OF A ROLLER SHUTTER TANK OR THE LIKE |
DE3608794A1 (en) * | 1986-03-15 | 1987-09-17 | Reinhold Muench | Device for the automatic locking of a roller blind which comprises interconnected strips |
GB2211540A (en) * | 1987-08-27 | 1989-07-05 | Hunter Douglas Ind Bv | Latch for blind |
DE3737707A1 (en) * | 1987-11-06 | 1989-05-24 | Clauss Markisen | LOCKABLE UPPER AWNING |
DE4104749C2 (en) * | 1991-02-15 | 1993-10-07 | Perfecta Rolladen Gmbh | Roller shutters |
-
1997
- 1997-11-04 NL NL1007445A patent/NL1007445C2/en not_active IP Right Cessation
-
1998
- 1998-10-27 EP EP19980203636 patent/EP0915214B1/en not_active Expired - Lifetime
- 1998-10-27 DE DE1998618609 patent/DE69818609T2/en not_active Expired - Lifetime
- 1998-10-29 NO NO985031A patent/NO985031L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO985031L (en) | 1999-05-05 |
EP0915214A1 (en) | 1999-05-12 |
DE69818609D1 (en) | 2003-11-06 |
NO985031D0 (en) | 1998-10-29 |
NL1007445C2 (en) | 1999-05-06 |
DE69818609T2 (en) | 2004-08-05 |
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