FR2763093A1 - AUTOMATIC RETRACTABLE GASKET FOR DOOR - Google Patents

Abstract

Retractable automatic seal for bottom of door.It is of the type comprising a seal (5) mounted on a support (6), a rail (7) mounted fixed on the leaf (1), at least two links (8, 8a), each link (8, 8a) is articulated at one end on an upper axis (9, 9a) integral with the rail (7) and by the other end on a lower axis (10, 10a) integral with the support (6) and it is characterized in that it further comprises a movable member (11) which is connected at one end to a return spring (17) bearing on the rail (7) and at the other end to a strap ( 18) which is fixed to the frame (2), so that following the movement of the movable member (11), said strap (18) and said return spring (17) respectively control the raising and lowering of said seal (5) ).

Description

The present invention has a retractable automatic seal for a door bottom.

  for a new automatic seal

  liftable installed at the bottom of the doors to improve watertightness.

  PRIOR ART Automatic seals are already known which have the function of improving the tightness of the lower part of the doors: such seals must be in contact with the ground when the door is closed, and then be raised when the door s opens so as not to remain in contact with the ground and

  interfere with the rotation or sliding of the door.

  To ensure this change in position of the seal, various technical solutions have been proposed; we know, for example, seals mounted on a hinge and which pivot down under the effect of a lever

  which tilts by abutting on the frame of the frame. The description of such

  device is given in particular in FR 1 338 522 with a control by lever or in US 3.118 193 according to which the rotation around the hinge

  is controlled by a pusher and a helical light.

  Automatic seals are also known, the device of which controls a vertical translation of the seal in order to lower it to the ground when the door is closed. Among the numerous devices of this type, there may be mentioned US 3,703,788 or EP 509,961 in which a pusher acts on a curved blade supporting the seal; FR 1586 449 and FR 2,388,978 which operate practically according to the same principle; US 3,030,674 in which the seal is supported by several articulated links and EP 209,678 according to which a set of sliders actuated by a pusher lowers the

  joint maintained by oblique springs.

  However, these various devices have drawbacks, either because of difficulties in adjusting the push stops, or because of their size, in particular in the case of mechanisms articulated by a hinge which are quite bulky in the raised state and can be deteriorate quite easily. In all of these known devices, the raised position is controlled by a spring and the lowered position is controlled by the force exerted on the pushers or the levers abutting on the frame of the

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  door; it follows that the stress exerted on the seal, when it is in the low position, is directly dependent on the adjustment of the stroke of the plunger: if the stroke of the plunger is too great, the seal is crushed on the ground and the forces exerted on the mechanism penalize its reliability and longevity; if the stroke of the pusher is too short, the seal is insufficiently applied against the ground and does not provide a good seal. We can see that with this type of device, the adjustments must be made with

  precision so that the joint works in good conditions.

  OBJECT OF THE INVENTION The present invention provides a new control device for an automatic door seal with vertical translation, in which the stress exerted on the seal in its working position is independent of the

device control means.

  The subject of the present invention is a seal for the bottom of a door leaf, movable in rotation relative to a frame, of the type comprising a seal mounted on a support, a rail mounted fixed on the leaf, at least two links, each link is articulated at one end on an upper axis secured to the rail and by the other end on a lower axis secured to the support, characterized in that it further comprises a movable member which is connected at one end to a return spring bearing on the rail and at the other end to a strap which is fixed to the frame, so that following the movement of the movable member said strap and said return spring

  respectively command the raising and lowering of said seal.

Description

  The device for controlling the automatic seal in vertical translation uses a flexible elastomer seal secured to a rigid rod articulated using at least two rods inside a U-shaped rail, at least the one of the rods being controlled by a sliding drawer and secured on the one hand to a return spring and on the other hand to a traction strap whose other end can be fixed to the door frame by means a cam on which said strap is partially wound when the door is opened, thus causing traction on the drawer and the

  retraction of the seal in its raised position.

  The attached drawings provide a better understanding of the

  3 5 Description of the device according to the invention.

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  Figure 1 is a schematic front view of the assembly of the automatic seal installed on the door leaf, the seal being in its raised position. Figure 2 shows the same view as in Figure 1, the seal being in the lowered position. Figure 3 shows a cross section of the mechanism according to

A-A 'in Figure 1.

  FIGS. 4a and 4b are respectively front and plan views of the system for fixing the end of the traction strap by means

  a cam on the door frame.

  Figures 5a and 5b are respectively front and plan views of the strap fastening system in the case of an overlapping door.

  Figure 6 is a schematic front view of a door.

  The automatic seal according to the invention is intended to equip a sash bottom 1 which is articulated on a frame 2 by means of hinges or

hinges 3 (figure 6).

  The automatic seal according to the invention and designated as a whole by the reference 4, comprises a seal 5 made of flexible elastomer, a rigid support strip 6 on which the flexible seal 5 is mounted, a retaining rail 7, shaped of inverted U and fixed on the lower part of the leaf 1, and at least two rods 8 and 8a, preferably three rods, two of which 8 are provided near the lateral sides of the leaf, the third 8a being disposed between the two lateral rods 8 , each link being articulated at one end on an upper axis 9, 9a integral with the retaining rail 7, and at the other end on a lower axis 10, lOa

  secured to the rigid support 6 of flexible joint 5.

  When the rail 7 is fixed to the lower part of the door leaf 1, the seal can pass from a high position to a low position due to its connection to the rail 7 by means of the links 8, 8a which form a

  deformable parallelogram with rail 7 and support 6.

  The control means according to the invention controls the position of one 8a of the rods by means of a drawer 11 which moves horizontally, parallel to the retaining rail 7. The drawer 11 is guided, on the one hand, by the rail 7 on which it is supported and, on the other hand, by the axis

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  upper 9a of the controlled link 8a on which it can move thanks to a first light 12 or a notch formed in the drawer 11, parallel to the rail 7. The displacement of the link 8a controlled by the sliding of the drawer 11, is obtained by by means of an intermediate axis 13 integral with the rod 8a which cooperates with a second light 14 formed in the drawer 11. The light 14 comprises a first part or zone 15 parallel to the direction of translation of the drawer and a second part or zone 16 inclined relative to the translation axis: when the intermediate axis 13 secured to the link 8a is in the first zone 15 of the slot 14, the link 8a maintains the seal 5 in a raised position. When the drawer 11 is moved, the sliding of the intermediate axis 13 in the second zone 16 of the light 14 causes a rotation of the link 8a and the lowering of the seal 5. The translation of the drawer 11 is controlled by, d ' on the one hand, the action of a return spring 17 which bears on the retaining rail 7 and, on the other hand, a flexible strap or braid for traction 18. The spring 17 tends to return the drawer 11 to a position that the seal 5 is lowered while the traction of the strap 18, which opposes the action of the spring 17, tends to pull the drawer 11 into a position

  that the seal is raised (Figures 1 and 2).

  The movement of the strap 18, one end of which is fixed to the drawer 11, is obtained by fixing the other end to the frame 2 supporting the hinges 3 of the door, by means of a cam 19 on which the strap 18 goes s '' partially wind during the rotation of the leaf 1 around the

hinges 3 (Figures 4a to 5b).

  For aesthetic reasons, the entire mechanism is generally covered by a protective cover 20 made of plastic or metal. The entire device is held on the door by means of screws 21 which are preferably fixed inside the hollow axes 9, 9a, or by means

adhesive (Figure 3).

  It is understood that the length and the shape of the lights 12 and 14 of the drawer 11, as well as the offset of the cam 19 are particularly important for defining the various parameters of the movement of the seal: in particular the cam 19 must be profiled so that traction is exerted on the strap 18 as soon as the leaf 7 of the door leaves its closed position, and

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  the inclined zone 16 of the light 14 must be oriented so as to raise

  quickly and immediately the ordered link 8a.

  Figures 4a to 5b show the mounting diagram of the automatic seal on the leaf 1 of the door, and the control cam 19 which must be secured to the frame 2 of the door supporting the hinges 3. Figure 4a shows the assembly seen in plan in the case of a flat flush door 22 fitted with the automatic seal according to the invention. The strap 18 is pinched under the cam 19 held by screws 23 on the upright 24 supporting the hinges 25. Figure 4b shows the assembly

previous seen from the front.

  Figures Sa and 5b respectively represent the plan views

  and from the front of the mounting of the device in the case of an overlapping door.

  Thus, according to this arrangement, the rotation of the door between the closed position and the open position will cause traction on the strap 18 causing a horizontal translation of the drawer 11 and therefore an upward vertical movement of the seal 5. During this movement, the spring

  17 is stretched under the stress of the traction of the strap 18.

  When the door is closed, the traction of the strap 18 is gradually released and the drawer 11 moves under the effect of the spring 17 2 0 which has been stretched previously; during this movement, the light 14 guides the intermediate axis 13 secured to the controlled link 8a to cause the end of the movement to lower the seal 5. At the end of the closing operation, the seal is in contact with the ground due to its own weight and the residual tension of the spring 17: it can thus be seen that the pressure exerted on the seal is preset by the characteristics of the spring 17 and does not depend, unlike known push-button devices, on adjustments which can

  be approximate and vary over time.

  The practical realization of the automatic seal according to the invention uses conventional materials usually used for these devices: the seal 5 is made of flexible elastomer such as for example a nitrile rubber, EPDM or silicone; the support 6 and the rail 7 are made of rigid material such as an aluminum profile; the rods 8, 8a can be made of rigid synthetic material or aluminum, the drawer 11 can be made of steel or nylon, the spring 17 is preferably made of steel (one could also use an extendable rubber band), the strap 18 which must be flexible and inextensible,

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  is for example made of braided polypropylene, the cam 19 is made of rigid material

  such as for example nylon, ABS or aluminum.

  The description of the automatic seal above was made for a

  automatic joint articulated by means of rods. It is also possible, without departing from the scope of the invention, to use other means of connection between the fixed part and the movable joint, such as for example flexible blades or vertical sliding axes; the device for controlling the vertical movement of the seal which, according to the invention, always calls for the traction of a strap opposing the return force of a spring, is then adapted by profiling the drawer in the form of a light or a horizontally sliding cam whose movement under the effect of the strap causes the seal to rise by means of a rigid rod secured by one end of the seal support and by its other end with a axis cooperating with the

light or the drawer cam.

  Still without departing from the scope of the invention, the movement of the seal can be obtained by placing an axis or a lug which cooperates with a light formed in the link on the horizontally translatable drawer.

ordered 8a.

  The above description was made for an automatic seal at

  apply on the lower part of the door leaf. Those skilled in the art can easily adapt the operating principle of the invention to an automatic seal which would be integrated inside the base of the door leaf, the operating strap in this case passing through a

  slot in the side of the leaf.

  The automatic seal according to the invention has the advantage, compared to the known devices of the prior art, of being in its lowered position while it is at rest, that is to say when the strap does not undergo traction and when the spring is in its minimum stress: this advantage is of significant importance because the seal can be mounted on the door while it is closed: just present and press the seal on the floor and then fix the rail using screws; the strap is then pinched under very low tension, between the cam and the fixed amount of the door on the hinge side and the installation is done without the need to make any

  settings or take action.

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  It should also be noted that the control of the device requires a simple connection on the hinge side of the door and that no accessory

  protrudes from the lock side of the door leaf.

  Finally, unlike push button or actuator lever devices, the device offers no resistance when the door is closed. It is even possible, in the case where this function is sought, to obtain a closing closing return torque by adapting the force of the spring and the shape of

  the cam of the device described above.

  The automatic door bottom seal according to the invention finds its application mainly in buildings, where, by eliminating the drafts passing under the doors, it improves comfort and

to save energy.

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Claims (10)

  1. Seal for bottom of door leaf (1), movable in rotation relative to a frame (2), of the type comprising a seal (5) mounted on a support (6), a rail (7) mounted fixed on the leaf (1), at least two links (8, 8a), each link (8, 8a) being articulated at one end on an upper axis (9, 9a) integral with the rail (7) and by the other end on a lower axis (10, 10a) integral with the support (6), characterized in that it further comprises a movable member (11) which is connected at one end to a return spring (17) bearing on the rail (7) and at the other end to a strap (18) which is fixed to the frame (2), so that following the movement of the movable member (11) said strap (18) and said spring reminder (17)   respectively control the raising and lowering of said seal (5).   2. Joint according to claim 1, characterized in that the movable member is constituted by a drawer (11) which moves horizontally,   parallel to the rail (7) which constitutes a guide for said drawer (11).   3. Joint according to claim 1 or 2, characterized in that at least 2 0 one (8a) of the rods (8) is controlled in movement by displacement of the drawer (11).   4. Joint according to claim 2 or 3, characterized in that the drawer (11) comprises a first lumen (12) which is crossed by the axis   upper articulation (9a) of the controlled link (8a).   2 5 5. Joint according to claim 2 or 3, characterized in that the drawer (11) comprises a second lumen (14) in which an axis moves   intermediate (13) of the controlled link (8a).   6. Joint according to claim 5, characterized in that the second lumen (14) has a horizontal part (15) and parallel to the rail (7) and An inclined part (16).   7. Joint according to one of claims 1 to 6, characterized in that the   strap (18) is fixed to the frame (2) by means of a cam (19) on which said strap (18) is partially wound during the rotation of the leaf (1). 9 2763093   8. Seal according to one of claims 1 to 7, characterized in that the seal, as a whole, is fixed on the base of the door leaf (1).   9. Seal according to one of claims 1 to 7, characterized in that the seal, as a whole, is integrated in the base of the door leaf (1).   10. Seal according to one of claims 1 to 8, characterized in that the seal, as a whole, is covered with a protective cover (20).