EP2907943A1 - Verrou de canaux de verrouillage - Google Patents

Verrou de canaux de verrouillage Download PDF

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Publication number
EP2907943A1
EP2907943A1 EP15155149.6A EP15155149A EP2907943A1 EP 2907943 A1 EP2907943 A1 EP 2907943A1 EP 15155149 A EP15155149 A EP 15155149A EP 2907943 A1 EP2907943 A1 EP 2907943A1
Authority
EP
European Patent Office
Prior art keywords
latch
bolt
plunger
barrel
tumbler
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Withdrawn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
EP15155149.6A
Other languages
German (de)
English (en)
Inventor
Andres Hernandez
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.)
QRP Inc
Original Assignee
QRP Inc
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 QRP Inc filed Critical QRP Inc
Publication of EP2907943A1 publication Critical patent/EP2907943A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B41/00—Locks with visible indication as to whether the lock is locked or unlocked
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2007—Securing, deadlocking or "dogging" the bolt in the fastening position
    • E05B17/203—Securing, deadlocking or "dogging" the bolt in the fastening position not following the movement of the bolt
    • E05B17/2034—Securing, deadlocking or "dogging" the bolt in the fastening position not following the movement of the bolt moving pivotally or rotatively
    • 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
    • E05C3/047—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 parallel to the surface on which the fastener is mounted
    • E05C3/048—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 parallel to the surface on which the fastener is mounted parallel to the wing edge

Definitions

  • the present invention relates to a latch for holding a moveable door or panel in a fixed position relative to another structure. More specifically it relates to channel latches of the type used in conjunction with panels on the exterior of an aircraft.
  • Aircraft utilize lever latches in many applications for retaining doors and access panels in their closed position.
  • Latches utilized on the exterior of aircraft have aerodynamic requirements that necessitate flush mounting within the aircraft outer skin.
  • the latching member or bolt is held within a recessed channel housing when it is in its closed condition, hence the name "channel latch.”
  • This channel latch utilizes a housing having panel attachment means and framework brackets at the sides, which define a recessed channel relative to the panel attachment means.
  • a bolt is pivotably connected to the housing and is moveable between closed and open positions. The bolt substantially resides within the channel in the closed position.
  • a lock mechanism secures the bolt closed.
  • the bolt lock also includes a secondary locking device to hold the bolt lock in the locked position.
  • the locking device comprises an assembly including a lock tumbler that is closely fitted into the bolt near one end.
  • a cylindrical bore through the bolt forms a cylinder that closely receives the tumbler assembly, which is rotatable between locked and unlocked positions.
  • the bottom end of the tumbler barrel includes means for fixedly engaging the housing when in the locked position to hold the bolt closed.
  • the lock assembly also has a secondary safety feature that provides anti-rotation means to prevent the unwanted turning of the lock. It includes a reciprocal plunger that has an integral, radially extending key.
  • the plunger rides up and down within a central longitudinal bore of the tumbler as it is released or depressed by a tool used to actuate the lock.
  • a key portion of the plunger projects outwardly through a longitudinal slot in the side of the tumbler barrel.
  • the end of the key is received in a keyway cut into the sidewall of the bolt cylinder that receives the tumbler.
  • the keyway is continuous and includes three portions through which travel of the end of the key is restricted: an arcuate lateral cutaway portion at the bottom and two upwardly extending longitudinal grooves at either end of the lateral portion.
  • the top ends of the two grooves define the fully released home positions of the key in either the locked or unlocked rotary positions of the tumbler barrel.
  • Tool engagement means for turning the lock assembly is provided by a hexagonal tumbler barrel bore which receives a corresponding tool. As the tool is inserted into the barrel bore the plunger is depressed downward. As explained above the plunger can only be released upwardly to a home position when the barrel is in either the locked or unlocked state. When released, the top of the plunger is flush with a top surface of the barrel. As an alternative the "unlocked" longitudinal groove can be shorter so that the top of the plunger is sub-flush in the unlocked home position providing an additional visual indicator of the bolt's unlocked state.
  • a latch in accordance with a preferred embodiment of the invention is shown in Fig. 1 .
  • the latch is fitted with a lock assembly 1 that secures the bolt 2 in its locked position relative to its housing 4.
  • the housing 4 includes mounting brackets for affixing the latch assembly to a panel through the mounting holes shown.
  • the bolt 2 lies within a channel formed between the brackets on each side.
  • An adjustable interface screw 5 is located at the end of the bolt for abutment with an adjacent moveable panel or door to be secured (not shown).
  • Indicia 1a and 2a, 2b on the top of the lock assembly visually indicate the rotational directions and the position of the lock.
  • the bolt is pivotably affixed to the housing and is rotatable between open and closed positions.
  • a tumbler barrel 15 constitutes the body of the lock assembly, which is fitted closely within a cylinder through the bolt near one end.
  • the lock assembly includes a central plunger 10 biased upwardly by spring 11 supported by a spring clip 17 below.
  • the lock assembly is captivated to the bolt between a flange at the top and by a retaining spring clip 18 at the bottom that engages the inside wall of the bolt cylinder.
  • the plunger is captivated above by an outwardly projecting plunger key 9 that abuts the top edge of a slot in the sidewall of the tumbler barrel.
  • FIGs 3 and 4 the released and depressed positions of the plunger of the lock assembly are shown.
  • the plunger is released, held upward by spring 16.
  • the key 9 extends through a slot 19 in the tumbler barrel and projects outwardly into a keyway 25 of the bolt cylinder sidewall 24.
  • the tumbler barrel includes a flange at the top which is recessed flush into the top of the bolt.
  • Figure 4 is the same as Figure 3 except that the plunger is shown depressed as it would be by a tool (not shown).
  • the edges of the tumbler bore have a hexagonal lateral cross-section to mate with a hex wrench type tool used to turn the tumbler.
  • Figure 5 depicts the path of the key in the bolt keyway.
  • the boundaries of the keyway form a U-shaped pathway that consists of two upwardly extending longitudinal grooves approximately 90 radial degrees apart interconnected at the bottom by a lateral cutaway bounded at the bottom by the barrel retaining spring clip 18 shown in Figure 2 .
  • key 9 is shown upwardly released and resting in the longitudinal groove at the right. This represents the rotational locked position of the barrel, which is thus prevented from turning by the engagement between the tumbler barrel, the key, and the sides of the groove 23 in the bolt cylinder sidewall 24. Hooks 20 at the bottom end of the barrel are now engaged with the housing as seen in Figure 6 .
  • FIG. 6 the bottom of the latch is shown in the closed position with the bolt lock fully engaged with the housing by the capture of cross member 8 by hooks 20.
  • the sides of the housing mounting brackets 4 are joined by cross members 6, 7 and 8, which include a roller rivet 7 shown in Figure 7 about which the bolt 2 can pivot when it is unlocked.
  • Two opposing hooks 20 capture the housing cross-member 8 as the barrel 15 is turned to the locked position.
  • spring clip 18 that holds the lock assembly to the bolt 2.
  • FIG. 7 is an exploded assembly view which depicts the various components described above by like numbering.
  • Brackets 4 form the latch housing and are joined by cross-members, rivets 6, 7 and 8.
  • the bolt 2 pivots about roller 12 on rivet 7.
  • the plunger 10 is installed into the lock subassembly from the bottom, retained by a clip 16, disc 17 and intermediate spring 11 which biases the plunger upward.
  • the plunger is captivated at the top by the key portion 9 of the plunger 10 abutting the top end of the slot 19 in the side of the barrel 15.
  • the barrel is secured within the bolt cylinder by clip 18.
  • the reduced number of components of this embodiment greatly reduces the manufacturing cost, maintenance cost, and weight compared to some prior art latches. Conversely, the reduced number of components of this embodiment increases the latches reliability.
  • the locking device holds the housing engagement hooks in the open position so that inadvertently banging the latch closed will not damage the hooks or the housing receiving member.
  • the lock retention key is only subject to movement in a direction perpendicular to the lock rotation in either of its home positions so that its lock retention effect will not be overcome by shock or vibration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
EP15155149.6A 2014-02-14 2015-02-14 Verrou de canaux de verrouillage Withdrawn EP2907943A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201461940165P 2014-02-14 2014-02-14

Publications (1)

Publication Number Publication Date
EP2907943A1 true EP2907943A1 (fr) 2015-08-19

Family

ID=52574032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15155149.6A Withdrawn EP2907943A1 (fr) 2014-02-14 2015-02-14 Verrou de canaux de verrouillage

Country Status (1)

Country Link
EP (1) EP2907943A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638709A (en) * 1994-04-25 1997-06-17 Clavin; Timothy J. Trigger latch
US6314772B1 (en) * 1999-08-13 2001-11-13 Pittway Corporation Lock mechanism for pull station
WO2009100030A2 (fr) * 2008-01-31 2009-08-13 Hartwell Corporation Loquet de canal actionné par un outil
US8356844B2 (en) 2007-11-26 2013-01-22 Avibank Manufacturing, Inc. Flush latch with positive lock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638709A (en) * 1994-04-25 1997-06-17 Clavin; Timothy J. Trigger latch
US6314772B1 (en) * 1999-08-13 2001-11-13 Pittway Corporation Lock mechanism for pull station
US8356844B2 (en) 2007-11-26 2013-01-22 Avibank Manufacturing, Inc. Flush latch with positive lock
WO2009100030A2 (fr) * 2008-01-31 2009-08-13 Hartwell Corporation Loquet de canal actionné par un outil

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