EP0905340A1 - Cliquet de verrouillage à action double - Google Patents

Cliquet de verrouillage à action double Download PDF

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Publication number
EP0905340A1
EP0905340A1 EP97307463A EP97307463A EP0905340A1 EP 0905340 A1 EP0905340 A1 EP 0905340A1 EP 97307463 A EP97307463 A EP 97307463A EP 97307463 A EP97307463 A EP 97307463A EP 0905340 A1 EP0905340 A1 EP 0905340A1
Authority
EP
European Patent Office
Prior art keywords
key
pawl
latch
actuating spindle
latch body
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.)
Withdrawn
Application number
EP97307463A
Other languages
German (de)
English (en)
Inventor
Dean Martin 41 Brickbury Hill Etheridge
Anthony James Lambert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
McKechnie Specialist Products Ltd
Original Assignee
Dzus Fastener Europe Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dzus Fastener Europe Ltd filed Critical Dzus Fastener Europe Ltd
Priority to EP97307463A priority Critical patent/EP0905340A1/fr
Publication of EP0905340A1 publication Critical patent/EP0905340A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C5/00—Fastening devices with bolts moving otherwise than only rectilinearly and only pivotally or rotatively
    • E05C5/02—Fastening devices with bolts moving otherwise than only rectilinearly and only pivotally or rotatively both moving axially and turning about their axis to secure the wing
    • E05C5/04—Fastening devices with bolts moving otherwise than only rectilinearly and only pivotally or rotatively both moving axially and turning about their axis to secure the wing performing both movements simultaneously, e.g. screwing into a keeper
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/02—Fastening devices with bolts moving pivotally or rotatively without latching action
    • E05C3/04—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt
    • E05C3/041—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted
    • E05C3/042—Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt rotating about an axis perpendicular to the surface on which the fastener is mounted the handle being at one side, the bolt at the other side or inside the wing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0025—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing

Definitions

  • the present invention relates to a pawl latch and, more particularly, to a so-called double action pawl latch for use in latching a door or panel for example, in which rotation of an actuator such as a handle or key causes both rotation of the pawl into or out of the latched position and translation of the pawl between a withdrawn position and a drawn-up position in which the pawl engages the surround of the door or panel say.
  • Latches of this type are generally well-known from eg. US-A-2 860 904 & US-A-3 402 958 (to Barry), US-A-2 269 264 (to Haim), GB-B-2 158 866 & GB-B-2 172 648 & others (to Southco) and from Eldon.
  • the drawing-up of the latch and its withdrawal are achieved by a screw-thread, in others, eg Haim or Southco, this is achieved by a camming action, and in most of these, there are stops or the like to prevent over-rotation and to guide the motion of the pawl in the rotational and translational directions.
  • the applicants have manufactured different latches of this general type for many years, recently, for example, the Dzus "Series 43 latch".
  • the latch may have an operating lock or special actuator form to prevent operation without an appropriate key or actuator.
  • the use of conventional pin-operated keys significantly increases costs and it is therefore desirable to use other types of keys.
  • a single key may be used for all latches having a particular use.
  • retainers may be fitted to prevent this (see for example GB-B-2172648), it is preferable if the operative components are only accessible from the rear.
  • a double action pawl latch having a tubular latch body for attachment to a door, panel or the like, and having an enlarged head for abutment against a front surface of the door or panel; and, disposed within the latch body, an actuating spindle and a pawl operating spindle axially and rotationally movable relative to the actuating spindle under the action of a helical cam connection between the actuating spindle and the pawl operating spindle and having a pawl attached thereto at a rear end, the tubular latch body and the pawl having an engagement which allows rotation of the pawl from a first angular position in a first axial position of the pawl and axial movement of the pawl to a second axial position in a second angular position of the pawl, characterised in that
  • the actuating spindle includes a central axial protrusion which engages in a central bore of the key in use, and the central protrusion is non-circular, preferably oval. This provides yet a further measure of security against tampering with the latch.
  • FIG. 1 shows the various components of the double action pawl latch of the example in exploded view, with the exception of the securing nut.
  • the latch 1 comprises a front tubular latch body 10 which has an enlarged head or bezel 11 which, in use, engages around the sides of an aperture at which the latch is fastened in a door, panel or the like which is to be secured using the latch 1.
  • the front tubular latch body 10 has four screw-threaded portions 12 equally spaced around its circumference, separated by flats 13.
  • a pair of deformable detents 14 are provided on opposite sides (one only shown in figure 1) and a locating slot 15 is provided at the rear end of the front latch body 10.
  • a washer 16 is inserted over the front latch body 10 to engage the rear of the door, panel or the like and a screw-threaded nut is used to back-up the washer in order to secure the latch body in place.
  • a rear tubular latch body 20 which, on assembly, mates with and is secured to the front tubular latch body 10 provides a tubular housing for securing the working components of the latch.
  • the rear tubular latch body 20 has a barrel 21 with a pair of opposed apertures 22 into which the detents 14 are deformed to secure the rear latch body inside the front latch body.
  • the barrel 21 may be partially splined about an annular portion 23 to provide an press fit within the front tubular latch body 10.
  • a pair of diametrically opposed cross pin access slots 24 are provided in the annular portion 23 as is a location protrusion 25 which in use mates with the location slot 15.
  • the rear tubular latch body 20 incorporates an enlarged diameter portion 26 which has a diameter similar to that of the front tubular latch portion 10 and a pawl control section 27 which is again of slightly increased diameter.
  • the pawl control section 27 has a part-annular protrusion 28 which provides a pair of abutments 29, 30 to limit rotation of the pawl 40 to approximately 90° when it is axially aligned with the protrusion 28, and a further abutment 31 is provided which, in combination with the abutment 30, substantially completely prevents rotation of the pawl 40 when it is axially aligned with the abutment 31, as will be described below.
  • An actuating spindle 50 which comprises a cylindrical spigot 51, has an enlarged front end portion 52 which includes a pair of annular ribs 53 to receive a synthetic rubber O-ring 54 and also provides plural part-annular abutment segments 55 separated by radial key slots 56.
  • the front end portion 52 also includes a central axial protrusion 57.
  • a spring washer 58 is disposed on the spigot 51 against the annular flange 53 and in use engages against the corresponding end of the barrel 21 of the rear tubular latch body 20.
  • the spigot 51 includes a cross bore 58 for receipt of a cross pin 59.
  • a pawl operating spindle 60 in the form of a hollow sleeve 61 has a pair of helical cam slots 62 which are diametrically opposed and has an enlarged diameter rear end portion 63 on which the pawl 40 is non-rotatably secured in use by means of a bolt 90 secured through a threaded counter bore 64 which is formed in a non-circular end protrusion 65 which extends, in use, through a similarly shaped aperture 41 in the pawl 40.
  • the pawl 40 includes a pair of abutments 42, 43, which in use engage, respectively, with the abutment 30 and the abutment 29 or 31 of the rear tubular latch portion 20.
  • the actuating spindle 50 carrying the spring washer 57, is inserted in the front end of the rear tubular latch body 20 and the pawl operating spindle 60 is inserted from the opposite end, a helical spring 70 being disposed within the pawl operating spindle 60 between the two to bias them apart.
  • the cross pin 59 is then inserted, through one of the cross pin access apertures 24, through the helical cam slots 62 of the pawl operating spindle 60 and the bore 58 of the actuating spindle 50.
  • the two spindles are thus secured together within the rear tubular latch body 20 and are free to rotate within it.
  • the rear tubular latch body is then presented to the front tubular latch body with the locating protrusion 25 aligned with the location slot 15 and it is press-fitted into the front tubular latch body 10, capturing the actuating spindle 50 between the two latch bodies.
  • the detents 14 are then deformed inwardly into engagement with the apertures 22 to secure the rear tubular latch body within the front tubular latch body 10.
  • the latch After assembly the latch is in the unlocked or unlatched position with the pawl axially aligned with the abutments 29 and 30 and capable of rotation over a 90° angle defined by engagement of the abutment 42 with the abutment 30 and the abutment 43 with the abutment 29.
  • the actuating spindle In order to operate the latch the actuating spindle is rotated by means of a key engaged through the head or bezel 11 with the front end portion 52 of the actuating spindle 50 so as to enable rotation of the pawl from a first angular position in which the abutment 43 engages the abutment 29 to a second angular position in which the abutment 42 engages the abutment 30 (i.e.
  • the pawl actuating spindle being driven by means of its connection with the cross pin 59 from the actuating spindle 50.
  • the abutment 42 engages the abutment 30 the pawl actuating spindle can no longer rotate and thereafter continued rotation of the actuating spindle 50 causes the cross pin 59 to move along the cam slots 52 drawing the pawl actuating spindle 60 against the biasing action of the spring 70 further around the spigot 51 of the actuating spindle 50, carrying the pawl 40 with it.
  • Rotation of the pawl is substantially completely prevented by continued engagement of the abutments 42 and 30 and also by the abutments 43 and 31.
  • the cross pin 59 reaches the ends of the cam slots 62 which have a detent 66, the latch is fully locked or latched in a position drawn-up towards the front of the latch, against the frame or surround on which the door or panel is secured.
  • the front tubular latch body 10 has an internally thickened wall portion 17 which provides a pair of axially extending abutments 18,19. These are capable of engagement with abutments 81, 82 which are provided on respective protrusions 83, 84 on adjacent ones of the part-annular portions 55 of the head 52 of the actuating spindle 50.
  • Figures 2A-2C show a front view of the latch with the head or bezel 11 removed and with internal components in cross-section, in respective latched, 90° rotated from latched, and 180° fully unlatched positions and Figures 2D-2F show a rear view of the latch in corresponding positions. It can be seen how, in the latched position, in which the abutment 42 on the pawl 40 is engaged with the abutment 30 on the protrusion 28, the abutment 82 on the actuating spindle 50 is engaged with the abutment 19 on the front tubular latch body 10, in Figures 2A and 2D.
  • Figures 2A-2F also show the securing nut 80 and figures 2D-2F show the bolt 90 which secures the pawl 40 to the pawl operating spindle 60.
  • Figures 2A-2C also show, in cross-section, the central protrusion 57 which can be seen to be non-circular.
  • FIGS 3A-3B and 4A-4D illustrate a further aspect of the latch.
  • the bezel or head 11 of the front tubular latch body 10 has a front aperture 100 which has radially outwardly extending key slots 101 which mate with corresponding radial protrusions 202 on the end of a tubular key 200.
  • the central protrusion 57 has been removed from the figures.
  • the position of the part-annular protrusions 55 and the radial key slots 56 in the actuating spindle 50 can be clearly seen.
  • the latch is shown in the latched position and it can be seen that the key slots 101 are not aligned with the key slots 56. This means that the key 200 can only be inserted until the ends of the key protrusions 202 engage against the front surfaces 55' of the protrusions or abutments 55.
  • a part annular rearwardly extending abutment 102 within the head or bezel 11 prevents withdrawal of the key by engaging the rear ends (in the sense of the key rather than the latch) of the key protrusions 202.
EP97307463A 1997-09-24 1997-09-24 Cliquet de verrouillage à action double Withdrawn EP0905340A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97307463A EP0905340A1 (fr) 1997-09-24 1997-09-24 Cliquet de verrouillage à action double

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97307463A EP0905340A1 (fr) 1997-09-24 1997-09-24 Cliquet de verrouillage à action double

Publications (1)

Publication Number Publication Date
EP0905340A1 true EP0905340A1 (fr) 1999-03-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97307463A Withdrawn EP0905340A1 (fr) 1997-09-24 1997-09-24 Cliquet de verrouillage à action double

Country Status (1)

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EP (1) EP0905340A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000031365A1 (fr) * 1998-11-19 2000-06-02 Dieter Ramsauer Fermeture a verrou rotatif avec unite de traction
WO2009043420A1 (fr) * 2007-09-27 2009-04-09 Oberholz-Dusser, Isabel Fermeture à serrage par rotation avec verrouillage de poignée de manœuvre
GB2500979A (en) * 2012-02-24 2013-10-09 Anthony Molloy Lock assembly with key retaining aperture
WO2021083456A1 (fr) * 2019-10-31 2021-05-06 Emka Beschlagteile Gmbh & Co. Kg Serrure à battants pour le verrouillage d'une porte

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2269264A (en) 1941-03-04 1942-01-06 Haim Albert Swing lock fastener
US2860904A (en) 1955-06-07 1958-11-18 South Chester Corp Door or panel fastener
US3402958A (en) 1967-03-28 1968-09-24 Southco Door or panel fastener
DE3502418A1 (de) * 1984-01-26 1985-08-01 Southco, Inc., Concordville, Pa. Aufbau eines schlosses mit zugmechanismus
GB2158866A (en) * 1984-05-16 1985-11-20 Southco Latch mechanism having pull- in action
GB2172648B (en) 1985-03-22 1988-06-08 Southco Key and latch-actuator
EP0540429A1 (fr) * 1991-10-04 1993-05-05 Schneider Electric Sa Dispositif de retenue d'une clé d'une serrure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2269264A (en) 1941-03-04 1942-01-06 Haim Albert Swing lock fastener
US2860904A (en) 1955-06-07 1958-11-18 South Chester Corp Door or panel fastener
US3402958A (en) 1967-03-28 1968-09-24 Southco Door or panel fastener
DE3502418A1 (de) * 1984-01-26 1985-08-01 Southco, Inc., Concordville, Pa. Aufbau eines schlosses mit zugmechanismus
GB2158866A (en) * 1984-05-16 1985-11-20 Southco Latch mechanism having pull- in action
GB2158866B (en) 1984-05-16 1986-07-09 Southco Latch mechanism having pull-up action
GB2172648B (en) 1985-03-22 1988-06-08 Southco Key and latch-actuator
EP0540429A1 (fr) * 1991-10-04 1993-05-05 Schneider Electric Sa Dispositif de retenue d'une clé d'une serrure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000031365A1 (fr) * 1998-11-19 2000-06-02 Dieter Ramsauer Fermeture a verrou rotatif avec unite de traction
US6568226B1 (en) 1998-11-19 2003-05-27 Dieter Ramsauer Rotating-lock closure with traction unit
WO2009043420A1 (fr) * 2007-09-27 2009-04-09 Oberholz-Dusser, Isabel Fermeture à serrage par rotation avec verrouillage de poignée de manœuvre
GB2500979A (en) * 2012-02-24 2013-10-09 Anthony Molloy Lock assembly with key retaining aperture
GB2500979B (en) * 2012-02-24 2018-02-07 Northstone (Ni) Ltd Lock assembly
WO2021083456A1 (fr) * 2019-10-31 2021-05-06 Emka Beschlagteile Gmbh & Co. Kg Serrure à battants pour le verrouillage d'une porte
CN114945727A (zh) * 2019-10-31 2022-08-26 爱姆卡工业五金有限公司 用于锁门的平开锁

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