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EP-3404176-B2 - DEVICE FOR UNLOCKING A DOOR LATCH

EP3404176B2EP 3404176 B2EP3404176 B2EP 3404176B2EP-3404176-B2

Inventors

  • GUERIN, ANTHONY
  • VILOTTA, Bruno
  • LANNO, Thomas
  • DESEGHER, Emilien

Dates

Publication Date
20260513
Application Date
20170516

Claims (5)

  1. A door handle (1) configured to be mounted to slide in an opening (5) of the door between a rest position in which the handle is flush with the door and a working position in which the handle projects with respect to the door, the handle comprising: - a mechanism for operating the handle, - an unlocking device including a cylinder (37) carried by a support directly or indirectly configured to be fixed to the door, the cylinder being configured to be connected to an unlocking element (35) of the latch via an operating member (42) of the unlocking element of the latch, characterized in that the mechanism for operating the handle comprising a first lever (6) having a general Y-shape (15) comprising a tail (7) curved toward the inside of the handle and pivotally mounted about a first axis (8) carried by the handle, and two branches (9) symmetrical with respect to a median plane extending in a longitudinal direction of the handle, and each having one end connected by a joint (54) to one end of a connecting rod (10), whose opposite end is pivotally connected to a second lever (11) by means of a joint comprising a second axis (12) carried by the second lever (11) and engaged in an oblong slot (13) formed in the connecting rod and extending in the longitudinal direction of the connecting rod, the second axis (12) and the slot (13) thus providing, for each connecting rod, a clearance in a longitudinal direction of the connecting rod, at the end opposite the joint with the connecting rod (10), the second lever (11) being pivotally mounted on a third axis (14) carried by the handle, the third axis (14) extending parallel to the first axis (8) and spaced therefrom in a longitudinal direction of the handle, the first lever (6), the second lever (11) and the connecting rod (10) thus forming with the handle a deformable quadrilateral whose deformation causes a translational displacement of the handle, and in that the cylinder (37) being mounted to emerge facing the handle in an inclined manner with respect to a direction (56) normal to the door. in that the inclination is sufficient to allow the introduction of the cylinder into the housing from the outside of the door when the handle is in the working position, in that the cylinder is removably mounted from the outside of the door, and in that it includes a member (41) for releasing the cylinder accessible through the rabbet of the door.
  2. The handle according to claim 1, characterized in that it includes a coupling member (45,46; 48,49,50) between the cylinder and the operating member of the unlocking element of the latch, the coupling member having an input axis (52) and an output axis (53) which extend in two different directions.
  3. The handle according to claim 2, characterized in that the coupling member comprises bevel gears (45,46).
  4. The handle according to claim 2 or 3, characterized in that the coupling member comprises a dial mounting (48,49,50).
  5. The handle according to claim 3 and claim 4 considered in combination, characterized in that the coupling member comprises a bevel gear (45) fixed to the cylinder, and a bevel gear (46) fixed to a plate (47) carrying a part of the dial mounting.

Description

The present invention relates to a flush door handle and its device for unlocking a door lock, in particular, but not exclusively, a motor vehicle door lock. We know of a non-flush door handle mounted to pivot as described in the documents OF 298 04 105 U1 or US 2014/230329 A1 Such a pivoting handle protects the door lock and prevents it from becoming dirty. A vehicle lock, for example, is described in the document EP 1 262 626 A2 . This type of pivoting door handle, which can be flush-mounted, is like the one described in the document. WO 2014/049026 A1 This already allows easy access to the door lock in case of a malfunction. Easy access is possible because one end of the handle is left free. We are particularly interested in the motor vehicle which is equipped with a door lock associated with a flush door handle mounted to slide in a door opening between a rest position in which the handle is flush with the door and a working position in which the handle protrudes from the door; generally, a motor is provided to ensure the transition from the rest position to the working position after identification of the person attempting to open the door. When the motor fails, for whatever reason, the door must be able to be opened manually. For this purpose, a key mechanism is generally installed, which opens onto the door itself. However, since this mechanism is rarely, if ever, used, there is a risk of it becoming clogged, preventing the door from being opened manually. Typically, the key mechanism is located next to the flush sliding handle. To mitigate this risk, the end of the cylinder is covered by a sliding shutter or a small cover, but this only shifts the problem, as the sliding shutter or cover is exposed to the elements. In the case of the document WO 2016/188694 A1 The sliding handle described incorporates the key mechanism within itself, so there is no need to try to protect it. One aim of the invention is to provide a door lock unlocking mechanism whose operation is guaranteed under normal conditions of use. To achieve this goal, a door handle according to claim 1 is provided. Thus, during normal use of the vehicle, the entry of the unlocking mechanism is protected by the handle, so that the risk of fouling is considerably minimized. According to the invention, the inclination is sufficient to allow the cylinder to be inserted into the housing from the outside of the door when the handle is in the working position. According to another advantageous embodiment of the invention, the unlocking mechanism comprises a coupling member between the cylinder and the operating member of the lock's unlocking element, the coupling member having an input axis and an output axis extending in two different directions. This allows the cylinder's position to be adapted to the overall configuration of the door lock. According to other features of the invention that can be implemented alone or in combination: the coupling member comprises bevel gears; the coupling member comprises a universal joint assembly; the coupling member comprises a bevel gear fixed to the cylinder, and a bevel gear fixed to a plate carrying part of the universal joint assembly; the cylinder is removably mounted from the outside of the door. This allows finishing operations, in particular painting the door, to be carried out without risking affecting the operation of the unlocking mechanism. According to yet another feature of the invention, the mechanism includes a cylinder unlocking device accessible through the door rebate. Other features and advantages of the invention will become apparent from the following description of an example of an embodiment of the invention, with reference to the accompanying figures, among which: There figure 1 is a schematic perspective view of the control mechanism of a door handle according to the invention, There figure 2 is a schematic top view of the control mechanism shown outside its housing in the handle's rest position, There figure 3 is a view analogous to that of the figure 2 for a working position of the handle, There figure 4 is a view analogous to that of the figure 2 when the handle is operated in the direction of opening the door, There figure 5 is a schematic perspective view of one embodiment of the first lever and the second lever, There figure 6 is a schematic partial perspective view from inside the casing, There figure 7 is a perspective view of the door lock unlocking device according to a first embodiment of the coupling means for the cylinder and the lock lever, There figure 8 is a schematic perspective view of a second embodiment of the unlocking device. With reference to the figures, the invention relates to a control mechanism for the handle 1 of a door 2. The handle 1 is movable between a rest position in which the handle is flush with the door, and a position of work in which the handle protrudes from the door as illustrated on the figure 1 The control mechanism includes a housing 3 eq