FR2549129A1 - SUPPORT SETS FOR USE IN JALUUSIES - Google Patents

Abstract

THE PRESENT INVENTION IS CONCERNED WITH A SUPPORT KIT FOR JEALOUSY. THIS ASSEMBLY IS PRESENTED WITH THE ENDS OF THE BLADES MOUNTED ON 8 BLADE HOLDERS ADAPTED IN A 7 PIVOTING WAY ON 5 ARMS, 6 SHAPED ON NYLON SUPPORTS 4 PLACED IN A THROAT EXTENDING ALONG A BEAM 1 SUPPORT IN PRESSED ALUMINUM. WHEN BEAM 1 EXPANDS RELATING TO THE SUBSTRATES UNDER THE EFFECT OF HEAT, THE SUPPORTS REMAIN UNIFORMLY DISTRIBUTED ALONG THE BEAM. APPLICATION TO NON-RETRACTABLE JALOUSIES HAVING A GREAT LENGTH IN THE DIRECTION PERPENDICULAR TO THE BLADES.

Description

Support kits for use in blinds The invention

  relates to non-retractable blinds, that is to say, blinds in which pivoting blades are spacedly mounted on supports from longitudinal members which, in use, are fixed relative to the opening to which a louver is applied. Such blinds are described in patents GB 1 414 322 and 1 540 717 in which are described assemblies comprising an elongated beam provided with a longitudinal groove in which irreversibly (in a direction perpendicular to the groove) are driven irreversibly. supports each provided with two arms located in a same plane, intended

  each to support a pivoting blade holder.

  It has been found that under certain physical conditions, for example during large temperature variations or when it is necessary to make a jalousie of appreciable length (for example 6 m in a direction perpendicular to the blades), the uniform operation of the jealousy on any

  For example, when the blades of one end of the louver are completely closed, it is possible that those on the other end are only partially closed. Also, a main object of the invention is to provide a support package for use in jealousy and that substantially eliminates the above-mentioned disadvantages.

  According to the invention, a support assembly for the ends of the blades of a non-retractable louver comprises an elongated beam provided with a longitudinal groove and supports each having at least one elongated arm for supporting a pivoting blade holder, the supports being fixed in a row in the groove and each support being individually anchored against the longitudinal movement along the groove, the beam being formed of a material having

  a greater coefficient of thermal expansion than the material from which the supports are formed.

  In order that the invention may be clearly understood and easily realized, a construction according to the invention will now be described in detail, purely by way of example, with reference to the accompanying drawings in which: FIG. 1 is a side elevation of a part of an elongated support assembly intended for use in a jealousy and Figure 2 is a section along the line II-II of the

figure 1.

  An aluminum beam spun with press 1 ensures

  supporting the ends of the blades} on one side of a jalousie.

  It will be understood that a similar beam and associated parts are provided on the other side of the opening to which the jealousy is applied, to support the ends of the blades of this side. The beam 1 is provided with wings. 2 by which it can be fixed to a wall, a c 8 tee of the opening A groove 3 is formed along the edge of the beam which is opposite the wings 2 and receives supports 4 each provided with arms 5, 6 provided with pivots 7 on which are pivotally mounted blade holders 8 For the sake of explanation, the two blade holders 8 shown to the right of FIG. 1 are in the position to keep the louver fully open and to left, in the position corresponding to the closed state of the blind. An aluminum bar spun with the press 9, articulated to the blade holder 8 at the points 10, 11, can come and go to adjust the extent to which

the jealousy is open or closed.

  The supports 4, with the arms 5, 6 and the portelame 8 are made of plastic, very advantageously known under the trademark "NYLONN which can contain a charge inhibiting the effect of ultraviolet rays Each support 4 comprises a wing 4a and a core 4 _b Each support 4 is fitted into the groove 3 by pushing it in the direction perpendicular to the groove. Once inserted, the support can not be removed because the locking arrangements of the core 4b are adapted to -3

  inclined portions of the groove 3 to pocket this withdrawal.

  An important feature of each support 4 is that it is provided with a downwardly directed lateral projection 13 which, when the carrier is mounted, fits into a corresponding slot in the side wall. This cooperating projection and slot arrangement has the effect that each support is anchored in the longitudinal direction relative to the beam 1. Thus, when a rise in temperature results in an expansion of the aluminum relative to the plastic material which has a relatively low coefficient of thermal expansion, the distribution of the supports remains uniform and there is no accumulation of plastic parts not adapting to the extension

of the bar 9.

  In FIG. 1, the supports 4 are represented as

  being applied to each other at the lines 14.

  However, when a differential expansion occurs, as indicated above, a certain spacing between the supports is established at the location of these lines 14 Each support 20 4 has an arm 5 at one end and an arm 6 substantially in its center so that when the supports are in contact, the spacing between adjacent arms is constant along the beam However, when the beam 1 expands relative to the supports 4, the spacing between each arm 6 and the arm 5 of the support adjacent increases very slightly but it was found to have no effect

  harmful to the operation of the jealousy.

  In general, it has been found that the arrangement particularly described above allows the jealousy to operate uniformly over its entire surface, even if it has a very great length, for example 6 m and when significant variations in temperature occur, and under conditions where the hygroscopic property of the plastic is sensitive. In addition, the invention ensures ease and speed

  extremes of assembly in that it avoids the use of additional fasteners such as screws or rivets to hold the supports in position.

Claims (6)

  A support assembly for the ends of the blades of a non-retractable louver, comprising an elongated beam (1) and supports (4) each having at least one elongate arm (5, 6) for supporting a pivoting blade holder Characterized in that the supports (4) are fixed in a row along the elongate beam (1) and that each support (4) is individually anchored against the longitudinal movement along the beam by the fact that the supports and the beam are made to fit together without the use of additional accessories and that the beam is formed of a material having a greater coefficient of   thermal expansion as the material supports.   2 Support assembly for the ends of the blades of a non-retractable blind, characterized in that an elongated beam is provided with a longitudinal groove (3), the supports are fixed in a row in the groove, and that each support is anchored individually against the longitudinal movement along the gorge.   3. An assembly according to claim 2, characterized in that each support is an elongated element provided with two arms (5, 6) situated in the same plane, placed so that when the supports are in end-to-end contact, the spacing between adjacent arms along   of their line is virtually constant.   4. An assembly according to claim 3, characterized in that one of the arms (5) of each support is at one end of the support and the other arm   (6) is almost in the center of the support.   5. Assembly according to one of claims 1 to 4,   characterized in that the beam is an aluminum profile and the supports are formed of a plastics material. Assembly according to Claim 5, characterized in that the plastic material consists of a known material under the trademark "NYLON".   7. Assembly according to one of claims 2 to 6,   characterized in that each support is adapted to be recessed in the groove in a direction perpendicular thereto, the support and the groove having the desired shape to prevent withdrawal of the support in that direction and each support being provided with a lateral projection (13) which fits into a slot of a side wall (3a) of the groove when the carrier is driven into the groove, the projection and the slot for anchoring the carrier against the longitudinal movement along the crack.   8. Assembly according to one of claims 1 to 7,   characterized in that a blade holder (8) is pivotally mounted on each arm and the blade holders (15) are connected by a bar (9) which can move back and forth to move the blade carriers between corresponding positions. the states fully open and fully closed with a jealousy, the bar being made of the same material than the beam.   9 assembly according to one of claims 1 to 8,   characterized in that the supports are fixed to the elongated beam by making them cooperate with each other   without using additional accessories.