Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B77/00—Vehicle locks characterised by special functions or purposes
  • E05B77/36—Noise prevention; Anti-rattling means
  • E05B77/38—Cushion elements, elastic guiding elements or holding elements, e.g. for cushioning or damping the impact of the bolt against the striker during closing of the wing
• • 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
  • E05B85/02—Lock casings
• • 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
  • E05B85/20—Bolts or detents
  • E05B85/24—Bolts rotating about an axis
  • E05B85/26—Cooperation between bolts and detents

Definitions

• the invention relates to a lock of a motor vehicle and can be applied to an opening lock, such as a tailgate or a side door, or a motor vehicle seat.
• such a lock comprises a plate, generally metal, by which the lock is applied against the edge of the opening or seat, and fixed thereto and a housing, generally made of plastic, enclosing the whole mechanism of the lock.
• the lock comprises a rotary bolt intended to cooperate with a keeper mounted projecting on the fixed frame.
• the bolt has a notch in which engages the striker when closing the opening or the positioning of the seat.
• the lock also contains a rotating ratchet for holding the bolt in the closed position in which the latter holds the striker. The striker thus slides on a lateral surface of this notch of the bolt on a so-called closing path and pushes the bolt in rotation, when closing the lock.
• a crossbar is disposed on the side of the mean plane of the bolt and the pawl where the plate is not located and, by means of collars and screws, it causes the application of the plate against the edge of the movable wing, this cross then forming an obstacle opposing an offset of the mean plane of the bolt relative to the mean plane of the pawl.
• a buffer or chock-keeper made of flexible material, to absorb all frequencies in vibration during the movement of the vehicle, or to dampen the closing limit switch.
• This buffer is disposed in a housing housing, is fixed on the crossbar and, the lock of the opening or the seat being in the closed position, the striker is pressed against the wedge striker, blocked by the bolt, with compressive deformation of the wedge striker.
• the housing there is generally on the housing one or ribs molded on the housing and directed substantially perpendicular to the mean plane of the bolt. In the event of vibrations during the movement of the vehicle, the bolt comes into contact with this or these ribs and is thus held in place in its mid-plane.
• a known thickness of the wedge-striker, in the direction of its compression parallel to the mean plane of the bolt and corresponding to the distance between its attachment to the cross member and the contact of the striker in the closed position, is of the order of 9.5 mm.
• a thickness causes the need for too much pressure when closing the sash or seat.
• the bolt is generally covered with an overmolding material designed to reduce vibration noise, when the vehicle rolls, as well as during shocks on closing.
• an overmolding material designed to reduce vibration noise, when the vehicle rolls, as well as during shocks on closing.
• this material is often reinforced and it results in a reduction of its damping effect against noise
• the invention solves these problems by proposing a solution reducing the contacts and shocks of the bolt with the metal plate, and thus reducing the noise generated by a movement of the bolt when the lock is being closed and in the closed position.
• a motor vehicle lock comprising a plate and a housing enclosing the entire mechanism of the lock comprising a rotary bolt for cooperating with a strike projecting on a fixed frame and a rotary ratchet for to retain the striker in the closed position, said striker sliding on a lateral surface of the bolt on a so-called closing trajectory and pushing the bolt, when closing the lock, characterized in that said lateral surface is inclined with respect to the front surface of the bolt opposite the front surface facing said plate, on at least a first portion of said closing path, said striker coming into contact with the edge of said front surface, when closing the lock, said lock comprising a wedge-keeper made of flexible material disposed in a housing of the housing, said striker being pressed between this wedge-keeper and the êne
• the bolt comes to abut against the housing, and in particular against the ribs or ribs of the latter.
• the bolt does not bang on the metal plate, during vibration, but it comes up against the extension of the wedge-keeper. This results in very little noise.
• said lateral surface is inclined with respect to the front surface of the bolt opposite said platen by an angle of less than 90 degrees and greater than or equal to 85 degrees, and advantageously this angle is between 85 and 88 degrees.
• said wedge-keeper is fixed on a crosspiece disposed on the side of the mean plane of the bolt and the pawl where the plate is not located and forming an obstacle to an offset of the mean plane of the bolt relative to the mean plane of the pawl.
• the thickness of the extension extends approximately 0.4 mm from the height of the rib.
• Figure 1 is a bottom view of a lock according to the invention, without its plate, in the closed position.
• FIG. 2 is a partial perspective view of FIG.
• Figure 3 is a perspective view of a wedge-keeper according to the invention.
• Figure 4 is a perspective view of a housing of a lock according to the invention.
• Figure 5 is a perspective view of a housing of a lock according to the invention, equipped with its chock-keeper.
• Figure 6 is a detail view of Figure 4.
• FIG. 7 is a partial view in vertical section of the FIG.
• Figure 8 is a partial perspective view of a lock according to the invention.
• Figure 9 is a sectional view of this figure 8.
• the directions such as “upwards” or “downwards” are to be considered solely according to the orientation of the figures, the lock being able to be arranged differently on the motor vehicle.
• a lock of a motor vehicle intended for an opening or a seat comprises a not shown plate and a casing 1 enclosing the whole mechanism of the lock comprising a rotary bolt 2 intended to cooperate with a striker 3 mounted protruding on a fixed frame, a rotating pawl 4 for retaining the striker 3 in the closed position and a striker wedge 5 of flexible material disposed in a housing of the housing, the striker 3 being pressed between the striker pad 5 and the bolt 2 in the closed position of the lock.
• the striker 3 thus slides on a lateral surface of this notch of the bolt 2 on a so-called closing path AA 'of the corresponding face of the bolt 2, the striker being deformed by compression.
• the chock-keeper is nitrile-based rubber, preferably with a hardness greater than 50 Shore A, preferably of the order of 70 Shore A.
• the lock also comprises a crosspiece 6 disposed on the side of the mean plane of the bolt and the pawl where the plate is not located and forming an obstacle to an offset of the mean plane of the bolt relative to the mean plane of the pawl, as described in document patent
• the wedge-keeper has an orifice 5A into which is introduced a branch 6A of the crossbar 6.
• This attachment 5A, 6A is the fixing of the wedge-keeper which may optionally be performed differently depending on the conformation of the lock and the present of a cross or not.
• the housing 1 comprises a rib 1A directed substantially perpendicularly to the mean plane of the bolt 2. According to the prior art, this rib is intended to hold the bolt 2 in position in the housing. Several ribs of this type can be provided.
• such a known rib is reduced in height and the chock-keeper 5 has an extension 5B housed near the rib 1A and thicker than the height of this groove, so that a displacement of the bolt 2 perpendicularly to its mean plane causes a compression of this extension 5A, without contact with the rib 1A, as visible in Figure 5.
• the thickness of the extension 5A is 0.4 mm greater the height of rib 1A. More generally, the thickness of the extension 5B exceeds the height of the rib 1A towards the bolt 2, about 0.4 mm.
• the rib 1A is shortened by approximately 0.6 mm and comprises an end section 1B formed in an inclined manner just as much at its edge, forming a triangular rib section as relative to its relative positioning. with rib 1A.
• the extension 5B therefore comprises an outer edge 5C also inclined corresponding to this end section 1B.
• this end portion 1B of the rib 1A can also be formed inclined at its edge by forming a triangular rib section and not relative to its relative positioning with the rib 1A, as can be seen in FIGS. and 6 where its plane is perpendicular to that of the rib 1A.
• the extension 5B then has an external edge 5C right corresponding to this end section 1B.
• this end portion 1B of the rib 1A may not be inclined neither at its edge nor relative to its position. relative with the rib 1A, and be a rib portion perpendicular to the rib 1A and rectangular.
• the extension 5B then also comprises a right outer edge 5C corresponding to this end section 1B.
• a thin rib 1C may remain above the extension 5A of the keeper 5, as shown in Figures 6 and 7, the thickness of the extension 5B being modified accordingly.
• the thickness e of the lock wedge 5, in the direction of its compression parallel to the mean plane of the bolt 2 and corresponding to the distance between its fixing on the crosspiece 6 and the contact of the keeper 3 in the closed position is preferably 1 order of 8.7 mm.
• the chock-keeper 5 may include several extensions such as extension 5B described above, according to the arrangement of ribs 1A disposed on the housing. In particular, it can have two extensions symmetrical with respect to its central plane P.
• the lateral surface 2A of the bolt against which the latch 2 slides during closure of the lock is inclined relative to the front surface 2B of the bolt 2 opposite the surface. 2C facing the plate 7, on at least a first portion of the closing path A-A ', the keeper 2 coming into contact with the edge of the front surface 2B, when closing the lock.
• this lateral surface 2B is inclined relative to the front surface 2A of the bolt opposite to the front surface 2C turned towards the plate by an angle ⁇ less than 90 degrees and greater than or equal to 85 degrees, and advantageously this angle a is between 85 and 88 degrees.
• This angle depends more precisely on the specific dimensions of the various elements of the lock.
• the bolt 2 abuts against the housing 1, and in particular against the rib 1A.
• the housing being made of plastic material, the noise caused is much less than that of shocks on the metal plate 7 and a specific noise reduction geometry can be molded therein.

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• Lock And Its Accessories (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (2)

Family

ID=48128512

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (1)

Citations (1)

Family Cites Families (8)

• 2013
  • 2013-02-12 FR FR1300306A patent/FR3001994B1/fr not_active Expired - Fee Related
• 2014
  • 2014-02-10 BR BR112015019293A patent/BR112015019293A2/pt not_active Application Discontinuation
  • 2014-02-10 MA MA38300A patent/MA38300B1/fr unknown
  • 2014-02-10 CN CN201480008316.3A patent/CN104981577B/zh not_active Expired - Fee Related
  • 2014-02-10 RU RU2015138898A patent/RU2655252C2/ru not_active IP Right Cessation
  • 2014-02-10 EP EP14711806.1A patent/EP2956607B1/fr active Active
  • 2014-02-10 WO PCT/FR2014/050244 patent/WO2014125197A2/fr active Application Filing

Patent Citations (1)

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