EP0558211B1 - Door latch and lock assembly - Google Patents
Door latch and lock assembly Download PDFInfo
- Publication number
- EP0558211B1 EP0558211B1 EP19930301055 EP93301055A EP0558211B1 EP 0558211 B1 EP0558211 B1 EP 0558211B1 EP 19930301055 EP19930301055 EP 19930301055 EP 93301055 A EP93301055 A EP 93301055A EP 0558211 B1 EP0558211 B1 EP 0558211B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- latch
- housing
- key
- barrel
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/04—Devices for coupling the turning cylinder of a single or a double cylinder lock with the bolt operating member
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
- E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
-
- 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
Definitions
- This invention relates to a door latch and lock assembly particularly for use on the doors (including the tail gate and boot lid) of a motor vehicle.
- Most known locks comprise a key cylinder which has a key slot accessible outside of the vehicle for receiving a key.
- the inner end of the key cylinder is connected to a latch mechanism which actually holds the door shut by means of a link.
- This link is often accessible to a thief, and by obtaining access to the link otherwise than through the lock, the thief can open the door.
- a door latch and lock assembly for a motor housing as specified in claim 1.
- the invention also provides a door latch and lock assembly for a motor vehicle as specified in claim 2.
- the switch housing preferably encloses two microswitches which can be connected to an electronic control unit so that the action of turning the key is signalled to the control unit. This can then be used to activate or deactivate an alarm system or other electrical system.
- the engagement between the cylinder and the rotatable member is preferably achieved by a non-round male member on one component engaging in a correspondingly shaped female socket on the other component.
- the male member is on the cylinder and the female part is on the rotatable member.
- the rotatable member may have two radial fingers which extend into the latch housing, on either side of a latch operating member, so that rotation of the key which rotates the rotatable member also results in contact between one or other of the fingers and the latch operating member, to operate the latch mechanism.
- the lock unit may be secured to a vehicle door panel by inserting the barrel through a hole in the panel and then mounting a retaining clip on the barrel on the inside of the door panel.
- the lock unit may be connected to the switch housing by passing the barrel through a hole in a wall of the housing and then mounting a retaining clip inside the housing, on the lock barrel.
- the switch housing may be connected to the latch housing by riveting the two parts together, and the latch housing and switch housing may be pre-assembled and then mounted in a door as a single unit.
- the invention is also directed to a motor vehicle door latch mechanism as specified in claim 10.
- the exposed drive member is a non-round socket adapted to receive a correspondingly shaped projection on the end of a key cylinder.
- FIG 1 shows a lock unit 10, a switch housing 12 and a latch housing 14.
- the switch housing 12 and the latch housing 14 together make up a latch mechanism.
- the lock unit 10 has a head 16 with an aperture in the form of a slot 18 for receiving a key.
- the head 16 will normally be mounted on the outside of a vehicle door panel 20, as illustrated in Figure 2.
- the unit 10 has a barrel 22, and a cylinder rotates within the barrel 22 and ends in a non-round male member projection in the form of a rotatable spigot 24. When the correct key is inserted in the slot 18 and rotated, then the spigot 24 turns relative to the barrel 22.
- the switch housing 12 encloses a rotatable member 26, the shape of which is shown most clearly in Figure 3.
- This member 26 has an exposed drive member in the form of two sockets 28 which receive the spigot 24, such that rotation of the cylinder with the spigots produces rotation of the rotatable member 26.
- the member 26 has two fingers 28a which extend radially from the member and lie either side of a latch operating member 30 mounted within the latch housing 14.
- the operating member 30 is connected to a latch arm or actual latch member 32 by a mechanism which is not illustrated in detail in the Figures, but which will be familiar to the skilled man.
- the operating member 30 can be moved in the directions indicated by the double headed arrow 34, about an axis 36. Thus rotation of the correct key in the slot 18 will turn the rotatable member 26 which will turn the latch operating member 30 which will lock and unlock the latch mechanism.
- the switch housing 12 On assembly, the switch housing 12 will be connected directly to the latch housing 14 so that neither the operating member 30 nor the rotatable member 26 are accessible.
- the engagement between the spigots 24 and the sockets 28 will be wholly inside the housing 12, as indicated with reference to Figures 1 and 2.
- Figure 1 it can be seen that the barrel 22 has two pairs of slots 38 and 40, and two retaining clips 42 and 44 are illustrated.
- Figure 2 shows how the retaining clip 42 is fitted to secure the barrel 22 to the door panel 20, and how the clip 44 is fitted (inside the switch housing 12) to secure the barrel to the switch housing with the rotatable spigots 24 and the rotatable member 26 concealed within the switch housing.
- Figure 3 also illustrates two microswitches 46 and 48 which are mounted on an end wall of the housing 12 and will be operated by respective ones of cam surfaces 50, 52 on the rotatable member 26. Therefore when the key is inserted and turned, one or other of the microswitches 46, 48 will be closed so that a corresponding signal is sent to an electronic control unit 54.
- the assembly as described also allows for possible manufacturing tolerances, in that the fit between the spigots 24 and the sockets 28 can allow a degree of lost motion without adversely affecting the operation, and axial tolerances between the lock unit and the switch housing can be accommodated by allowing different depths of insertion of the spigots 24 into the sockets 28.
Landscapes
- Lock And Its Accessories (AREA)
Description
The switch housing preferably encloses two microswitches which can be connected to an electronic control unit so that the action of turning the key is signalled to the control unit. This can then be used to activate or deactivate an alarm system or other electrical system.
Claims (11)
- A door latch and lock assembly for a motor vehicle in which a key-operated lock unit (10) comprising a key barrel (22), a cylinder which can rotate within the key barrel (22) and an aperture (18) in the cylinder for receiving a key, is connected to a latch mechanism (12,14) with a latch arm or actual latch member (32) which holds the door open or closed, wherein all the moving parts of the assembled assembly, between the aperture (18) and the latch arm or actual latch member (32) are enclosed within a continuous housing, wherein the latch mechanism (12,14) and the key barrel (22) have mutually engageable mating features such that the latch mechanism (12,14) and the key barrel (22) can be assembled separately to the door with their mating features engaging to form a continuous housing, the lock unit (10) having a head (16), and the barrel (22) being insertable from the outside of the door through an opening having substantially the same shape as the key barrel (22).
- A door latch and lock assembly for a motor vehicle comprising a lock unit (10) having a barrel (22) and a cylinder which can rotate within the barrel after insertion of a key into an aperture (18) in the cylinder, the assembly including a switch housing (12) enclosing a rotatable member (26), and at least one electrical switch (46,48) responsive to rotation of the rotatable member (26), with the rotatable member and the cylinder (24) engaging directly with one another, inside the switch housing, so that rotation of the cylinder produces rotation of the rotatable member, and a latch housing (14) which encloses a latch locking mechanism and which is connected directly to the switch housing (12) so that rotation of the rotatable member operates the latch locking mechanism, wherein the key barrel (22), the switch housing (12), and the latch housing (14) form a continuous housing which encloses all the moving parts of the assembled assembly between the aperture (18) and the latch arm or actual latch member (32).
- An assembly as claimed in Claim 2, wherein the switch housing (12) encloses two microswitches (46,48) which can be connected to an electronic control unit (54) so that the action of turning the key is signalled to the control unit.
- An assembly as claimed in Claim 2 or Claim 3, wherein the engagement between the cylinder and the rotatable member (26) is achieved by a non-round male member (24) on one component engaging in a correspondingly shaped female socket (28) on the other component.
- An assembly as claimed in Claim 4, wherein the male member (24) is on the cylinder and the female socket (28) is on the rotatable member (26).
- An assembly as claimed in any one of Claims 2 to 5, wherein the rotatable member (26) has two radial fingers (28a) which extend into the latch housing (14), on either side of a latch operating member (30), so that rotation of the key which rotates the rotatable member (26) also results in contact between one or other of the fingers (28a) and the latch operating member (30), to operate the latch mechanism.
- An assembly as claimed in any one of Claims 2 to 6, wherein the lock unit (10) is secured to a vehicle door panel (20) by inserting the barrel (22) through a hole in the panel and then mounting a retaining clip (42) on the barrel on the inside of the door panel (20).
- An assembly as claimed in any of the claims 2 to 7, wherein the lock unit (10) is connected to the switch housing (12) by passing the barrel through a hole in a wall of the housing and then mounting a retaining clip (44) inside the housing, on the lock barrel.
- An assembly as claimed in any one of Claims 2 to 8, wherein the switch housing (12) is connected to the latch housing (14) by riveting the two housings together, and the latch housing and switch housing are pre-assembled and then mounted in a door as a single unit.
- A motor vehicle door latch mechanism suitable for use with a key operated lock unit(10) comprising a key barrel (22), a cylinder which can rotate within the key barrel (22) and an aperture (18) in the cylinder for receiving a key, the latch mechanism comprising a switch housing (12) enclosing a rotatable member (26) and at least one electrical switch which detects rotation of the rotatable member (26), and a latch housing (14) which encloses a latch locking mechanism and a latch arm or actual latch member (32) and which is connected directly to the switch housing (12) so that rotation of the rotatable member (26) operates the latch locking mechanism, wherein the rotatable member (26) has an exposed drive member (28) adapted to, in use, engage with the key cylinder so that turning the cylinder turns the drive member (28), the switch housing (12) having a feature adapted to mate with the key barrel (22) so that the key barrel (22), the switch housing (12) and the latch housing (14), in use, can form a continuous housing, said housing enclosing all the moving parts of the assembled assembly between the aperture (18) and the latch arm or actual latch member (32).
- A mechanism as claimed in Claim 10, wherein the exposed drive member is a non-round socket (28) adapted to receive a correspondingly shaped projection (24) on the end of the key cylinder.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9203986A GB2264743A (en) | 1992-02-25 | 1992-02-25 | Door latch and lock assembly |
GB9203986 | 1992-02-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0558211A2 EP0558211A2 (en) | 1993-09-01 |
EP0558211A3 EP0558211A3 (en) | 1994-08-24 |
EP0558211B1 true EP0558211B1 (en) | 2001-08-16 |
Family
ID=10710997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930301055 Expired - Lifetime EP0558211B1 (en) | 1992-02-25 | 1993-02-15 | Door latch and lock assembly |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0558211B1 (en) |
DE (1) | DE69330575T2 (en) |
GB (1) | GB2264743A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2317917A (en) * | 1996-10-07 | 1998-04-08 | Shamim Ullah | Security enhancement for motor vehicle door locks |
DE19650136B4 (en) * | 1996-12-03 | 2006-06-29 | Brose Schließsysteme GmbH & Co.KG | Motor vehicle door lock o. The like. With freewheel |
DE19704812B4 (en) * | 1997-02-08 | 2006-03-09 | Kiekert Ag | Motor vehicle door lock |
DE102008009566B4 (en) * | 2008-02-16 | 2012-08-02 | Ford Global Technologies, Llc | Motor vehicle door lock |
EP2093357A1 (en) * | 2008-02-21 | 2009-08-26 | Meritor Technology, Inc. | Vehicle door latch |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3234766A (en) * | 1963-11-15 | 1966-02-15 | O'brien Eugene | Time operated and/or remote controloperated electro-mechanical lock |
GB1388490A (en) * | 1972-04-19 | 1975-03-26 | Walsall Locks Cart Gear Ltd | Motor vehicle door locks |
SE398848B (en) * | 1975-01-17 | 1978-01-23 | Gkn Stenman Ab | KIT TO APPLY A WELDING MECHANISM IN A VEHICLE DOOR AND LASK KIT FOR PERFORMING THE KIT |
US4113294A (en) * | 1977-06-14 | 1978-09-12 | Francis Andrew Bierman | Anti-theft clip |
ES480950A1 (en) * | 1979-05-25 | 1979-08-01 | Duart Bonet Jose | Adjustable multiple bolt locking system |
DE8521379U1 (en) * | 1985-07-24 | 1986-12-04 | Kiekert GmbH & Co KG, 5628 Heiligenhaus | Motor vehicle door lock |
DE8526663U1 (en) * | 1985-09-18 | 1985-11-14 | Percic, Mladen, 6000 Frankfurt | Safety lock |
DE3608052A1 (en) * | 1986-03-11 | 1987-09-17 | Bayerische Motoren Werke Ag | Vehicle door, especially side door of a motor vehicle |
CH672939A5 (en) * | 1987-03-06 | 1990-01-15 | Ernst Keller | |
US4901545A (en) * | 1987-12-28 | 1990-02-20 | Rising Star Technologies (A Partnership) | Self-contained electromechanical locking device |
DE3827564C2 (en) * | 1988-08-13 | 1993-12-23 | Daimler Benz Ag | Locking device for vehicles |
GB2233703B (en) * | 1989-04-27 | 1993-06-09 | Mitsui Mining & Smelting Co | Switch box of lock device for vehicle |
IT217094Z2 (en) * | 1989-06-02 | 1991-10-29 | Fiat Auto Spa | INTEGRATED COMMAND DEVICE FOR A VEHICLE DOOR AND DOOR EQUIPPED WITH SUCH DEVICE |
DE3930149A1 (en) * | 1989-09-09 | 1991-03-14 | Ymos Ag Ind Produkte | DOOR LOCK |
US4962955A (en) * | 1989-10-16 | 1990-10-16 | General Motors Corporation | Deck lid latch and remote release |
DE4039442C1 (en) * | 1990-12-11 | 1992-01-30 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De |
-
1992
- 1992-02-25 GB GB9203986A patent/GB2264743A/en not_active Withdrawn
-
1993
- 1993-02-15 DE DE1993630575 patent/DE69330575T2/en not_active Expired - Fee Related
- 1993-02-15 EP EP19930301055 patent/EP0558211B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69330575T2 (en) | 2001-11-29 |
EP0558211A3 (en) | 1994-08-24 |
GB2264743A (en) | 1993-09-08 |
DE69330575D1 (en) | 2001-09-20 |
EP0558211A2 (en) | 1993-09-01 |
GB9203986D0 (en) | 1992-04-08 |
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