Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
  • E05B85/10—Handles
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
  • E05B15/04—Spring arrangements in locks
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T292/00—Closure fasteners
  • Y10T292/57—Operators with knobs or handles

Definitions

• the invention relates to vehicle door locks.
• the locks of a vehicle opening usually include a large number of parts including to control the opening of the opening both from outside the vehicle than from the inside.
• each of the outer and inner handles is able to control the rotation of the same intermediate lever which bears against a false pawl and causes the bolt to separate from a strike of the lock, thus releasing the 'opening.
• the user when operating one of the handles, provides a force whose intensity increases very quickly and then falls as soon as the pawl has released the bolt that released the striker.
• the pace of this stress curve is that of a peak and the sensation felt is similar to a shock.
• This pace of the increase in intensity is explained by the fact that the user must move the pieces through a number of dead races, then overcome the efforts provided by the mechanism of the return springs and finally provide the highest effort to release the ratchet which releases in turn the bolt of the striker.
• this shock even if it is common, is relatively unpleasant.
• An object of the invention is to improve the comfort of the user when controlling the opening of the opening.
• the invention provides an opening system for opening (22) of a vehicle, characterized in that it comprises:
• At least one downstream member adapted to control the opening of the opening, the spring extending in series between the upstream member and the downstream member with reference to a transmission kinematic chain of an opening command of the opening of the upstream member to the downstream member.
• the force provided before the operation of the pawl is devoted in part to solicit the spring inserted in series.
• the spring therefore implies a greater rise in effort prior to the opening movement.
• the user must therefore increase his effort earlier than he did in the aforementioned prior art. This causes a greater spread in time of this increase in intensity, with a force in the form of a ramp. If the final effort to be provided is therefore substantially the same, the progression to reach it starts earlier so that the user does not feel a peak or a shock during the maneuver of the handle but on the contrary a rise in intensity earlier and more regular.
• the system is arranged so that the upstream member transmits the opening control to the downstream member through only the spring or springs.
• the transmission of the force is through the spring only and not by direct contact between the bodies between which it is interposed in the kinematic chain. Once a certain level of stress on the spring has been reached, the spring directly transmits the forces it receives upstream to the downstream member, that is to say by balancing the forces.
• the system is arranged so that the upstream member can come into direct abutment against the downstream member to transmit the opening command.
• the biasing of the spring is only a prerequisite for contacting the parts for direct transmission of the stresses from one to the other for controlling the opening of the spring. 'opening.
• Such an operation also provides a rise in early and progressive effort.
• it will be preferable to reserve such an operation in a so-called degraded mode that will be encountered for example in a system according to the aforementioned embodiment but in which the spring is so tired that it has become insufficient to transmit itself the solicitation of a room to another or in an emergency mode in the case where the load required on the ratchet is too high, especially in the case of an opening taking place after a crash.
• Figure 1 is a partial perspective view of a lock according to a first embodiment of the invention
• Figure 2 is a diagram showing the arrangement of two parts of the lock between which a spring is interposed
• FIG. 3 is a diagram of the kinematic chain of the lock of Figure 1;
• Figure 4 is a general curve of the evolution of the intensity of the effort provided by the user as a function of the stroke of the handle during the opening maneuver of the lock of Figure 1;
• Figure 5 is a view similar to Figure 4.
• Figure 6 is a partial perspective view of a lock according to a second embodiment of the invention.
• Figures 7 and 8 are views similar to Figures 3 and 5 relating to the lock of Figure 6.
• a lock 2 for an opening 22 of a motor vehicle according to a first embodiment of the invention.
• the opening is for example a door.
• Some parts of the lock mentioned below are of a conventional type and are not described in detail and / or illustrated.
• EP-1 158 124 for more details on certain aspects of the lock, reference may be made to EP-1 158 124 in the name of the applicant.
• the system comprises the following members which are arranged to maneuver each other successively in the order in which they are cited below for the transmission of an opening control of the opening, thus forming a chain kinematics: -an opening handle 4,
• the mechanism 66 comprises in particular the following elements described as examples in the second embodiment:
• FIG. 3 shows at the head of the driveline the hand 68 of the user who actuates the handle 4,
• the two levers 60 and 64 are rotatably mounted relative to a frame 20 of the opening 22, about a common axis of rotation 68.
• the axis 68 is adjacent to a proximal end of each lever.
• a distal end 70 of the lever 60 cooperates directly with the handle 4 while a distal end 72 of the lever 64 cooperates directly with one end of the cable 8,
• the axis 68 is embodied by a shaft 74.
• the two levers 60, 64 are threaded onto the shaft in succession in the longitudinal direction of the axis 68.
• a spring 162 which is in this case a helical spring for torsion, thus comprising a helical median portion 76 and two rectilinear end branches 78 of which only one is visible in FIG.
• the branch 78 bears in a circumferential direction to the axis 68 against a relief 69 of the lever 70.
• the other end of the spring bears in the circumferential direction against a relief of the lever 72 but in the opposite direction to the the support associated with the lever 70.
• the spring 162 thus tends to rotate the levers relative to each other by spreading them in the direction of the double arrow 80,
• the two levers bear respective reliefs 82 and 84 able to come into contact with each other in the circumferential direction when the levers are brought towards each other against the restoring force developed by the spring. 162.
• the opening of the opening is carried out as follows.
• the spring 162 is now biased with an intensity which exceeds the mechanical strength forces of the part of the kinematic chain downstream.
• the lever 60 therefore now drives the lever 64 in rotation about the axis 68 in the same direction 80.
• the maneuvering of the handle 4 is thus transmitted by these parts. to the cable 8, then to the mechanism 66 to separate the bolt of the striker 18 and to allow the opening of the opening.
• the section 50 of the curve of Figure 4 which represents this phase of the maneuver. It is carried out substantially at constant force intensity because the spring has been chosen for this purpose, namely to have a stiffness such that the user does not have to substantially increase the intensity of its effort on this section.
• the spring 162 is very upstream in the kinematic chain, which reduces the effects of yield losses. We also reduce the plateau phases caused by the dead races of the movement of certain pieces.
• FIG. 5 illustrates a curve 56 derived from experimental readings for a lock of the prior art as well as a straight line 158 indicating the smoothing produced in comparison with the lock of FIG. 1. It is observed that, in addition to the smoothing effect of the intensity of the effort it generates, this line is slightly inclined with respect to the horizontal direction. The rise in effort is therefore early, regular and relatively slow during section 48.
• the handle 4 is rotatably mounted relative to the frame 20 of the opening 22. It actuates, via the cable 6, the inner opening lever 8 which is rotatably mounted. The latter actuates the intermediate opening lever 10 which is also rotatably mounted relative to the frame 20 about an axis 24.
• the false pawl 12 and the pawl 14 are rotatably mounted relative to the frame 20 around the same axis, but are movable relative to each other.
• the axes 24 and 26 are distant and parallel to each other.
• the system also comprises the following members which are arranged to maneuver each other successively in the order in which they are cited below, for the transmission of an opening command of the opening, thereby forming a kinematic chain:
• the outer handle 30 is fixed to one end of the cable 32 whose other end is fixed to the outer opening lever 34.
• the latter is rotatably mounted and can maneuver the clutch lever 36.
• a clutch 38 is interposed in the drive train between the clutch lever 36 and the intermediate opening lever 10.
• the clutch 38 can assume an engaged configuration in which it allows the intermediate lever 10 to be operated by means of the clutch lever 36 or a clutch lever 36. disengaged configuration in which the clutch lever is unable to maneuver the intermediate lever.
• the kinematic chain portions ranging from elements 4 to 8 on the one hand and 30 to 36 on the other hand are distinct and independent of each other. They allow each, independently of one another, to maneuver the intermediate opening lever 10 to separate the pawl 14 with respect to the bolt 16 thus releasing the striker 18 and thus open the opening. When it is a maneuver from the handle 30, it assumes that the clutch 38 is engaged.
• the levers 34 and 36 are, like the levers 60 and 64 of the first mode, rotatably mounted relative to the support 20 about the common axis 24 being movable relative to each other.
• the spring 262 similar to the spring 162 of the first mode, is interposed between the two parts in the direction of the axis 24 and has its end branches in circumferential support on the two respective levers.
• levers 34 and 36 have reliefs allowing them to bear directly against each other so that the lever 34 can directly maneuver the lever 36 in the event that the spring would not allow on its own the transmission of the necessary force.
• the lock comprises one or more return springs in position of some of the parts, independent of the springs 162 and 262, these return springs not being interposed in series in the drive train.
• the spring can be placed at different locations on the drive train.
• the spring may for example be interposed:
• torsion springs compression, such as leaf springs. or helical.

Landscapes

• Lock And Its Accessories (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=42731851

Family Applications (1)

Country Status (6)

Families Citing this family (3)

Citations (2)

Family Cites Families (17)

• 2009
  • 2009-12-08 FR FR0905949A patent/FR2953548B1/fr not_active Expired - Fee Related
• 2010
  • 2010-12-02 WO PCT/EP2010/068707 patent/WO2011069882A1/fr active Application Filing
  • 2010-12-02 EP EP10796313A patent/EP2510172A1/de not_active Withdrawn
  • 2010-12-02 US US13/510,018 patent/US20120267905A1/en not_active Abandoned
  • 2010-12-02 JP JP2012542458A patent/JP2013513046A/ja not_active Ceased
  • 2010-12-02 CN CN2010800556741A patent/CN102667033A/zh active Pending

Patent Citations (2)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events