IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0398334
(2006-04-05)
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등록번호 |
US-7722096
(2010-06-14)
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발명자
/ 주소 |
- Arlinghaus, Paul R.
- Trent, Bradley W.
- Brennaman, Rick L.
- Overbey, James W.
- Cook, Kenneth P.
- Banks, Russell A.
- Coleman, Michael D.
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출원인 / 주소 |
|
대리인 / 주소 |
Michael Best & Friedrich LLP
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인용정보 |
피인용 횟수 :
2 인용 특허 :
51 |
초록
▼
A latchbolt configured for use with a door lock assembly. The door lock assembly is configured for interaction with a strike coupled to a door frame, and operable to place the latchbolt in a locked configuration using the strike to generally prevent rotation of the door and an unlocked configuration
A latchbolt configured for use with a door lock assembly. The door lock assembly is configured for interaction with a strike coupled to a door frame, and operable to place the latchbolt in a locked configuration using the strike to generally prevent rotation of the door and an unlocked configuration to allow rotation of the door. The latchbolt includes a first member and a second member movably coupled to the first member. When the latchbolt is in the locked configuration the second member is movable relative to the first member from a first position to a second position in response to a predetermined force applied to the door.
대표청구항
▼
What is claimed is: 1. A door lock assembly for use with a door configured to rotate between a closed position and an open position, the door lock assembly configured for interaction with a strike coupled to a door frame, the door lock assembly comprising: a latchbolt including a first member confi
What is claimed is: 1. A door lock assembly for use with a door configured to rotate between a closed position and an open position, the door lock assembly configured for interaction with a strike coupled to a door frame, the door lock assembly comprising: a latchbolt including a first member configured to engage the strike and configured to rotate with respect to the door about a first axis when the latchbolt is in an unlocked configuration, and a second member configured to engage the strike and movably coupled to the first member; and a locking mechanism operable to place the latchbolt in a locked configuration relative to the strike to generally prevent rotation of the door and the unlocked configuration to allow rotation of the door, wherein the second member moves relative to the first member from a first position, in which the second member directly engages the strike preventing the rotation of the door, to a second position, in which the first member and second member directly engage the strike preventing the rotation of the door, in response to a force applied in an opening direction to the door when the latchbolt is in the locked configuration and the door is in the closed position, and wherein the second member is coupled to the first member such that rotation of the first member about the first axis causes rotation of the second member. 2. The door lock assembly of claim 1, wherein the first member at least partially defines a cavity, and wherein the second member is at least partially received by the cavity when the second member is in the second position. 3. The door lock assembly of claim 2, wherein the latchbolt further includes a biasing member located at least partially within the cavity and configured to bias the second member into the first position. 4. The door lock assembly of claim 3, wherein the biasing member has a stiffness that defines the force. 5. The door lock assembly of claim 3, wherein the biasing member is an elastomeric material. 6. The door lock assembly of claim 5, wherein the elastomeric material is butadiene rubber. 7. The door lock assembly of claim 1, wherein the second member rotates between the first and second positions about the first axis. 8. The door lock assembly of claim 1, further comprising a bridge configured to couple to the door for rotation relative to the door about a second axis, wherein the latchbolt is supported by the bridge for rotation with the bridge about the second axis and is rotatable relative to the bridge about the first axis, and wherein the first member rotates about one of the first and second axes when the door rotates from the closed position to the open position and the second member rotates about the one of the first and second axes when the second member rotates between the first and second positions. 9. The door lock assembly of claim 1, wherein the second member includes a curved surface configured to engage the strike when the second member is in the first and second positions, wherein the first member includes a generally flat surface, and wherein when the second member is in the second position the generally flat surface of the first member is configured to engage the strike. 10. A door lock assembly for use with a door configured to rotate between a closed position and an open position, the door lock assembly comprising: a housing configured to couple to the door such that the housing is substantially fixed with respect to door; a bridge rotatably coupled to the housing about a first axis; a latchbolt coupled to the bridge and configured to engage a strike, the latchbolt including, a first member configured to engage the strike and rotate with respect to the bridge about a second axis, and a second member configured to engage the strike and rotate with respect to the bridge and the first member about the second axis; and a locking mechanism coupled to the housing, the locking mechanism operable to place the latchbolt in a locked configuration relative to the strike to generally prevent rotation of the door and an unlocked configuration to allow rotation of the door, and wherein when the latchbolt is in the locked configuration and the door is in the closed position, the second member moves relative to the first member from a first position, in which the second member directly engages the strike preventing rotation of the door, to a second position, in which the first member and second member directly engage the strike preventing rotation of the door, in response to a force applied in an opening direction to the door, and wherein the second member is coupled to the first member such that rotation of the first member about the second axis causes rotation of the second member about the second axis. 11. The door lock assembly of claim 10, wherein the second member is rotatably coupled to the first member. 12. The door lock assembly of claim 10, wherein the latchbolt further includes a biasing member disposed between the first and second members, and wherein the biasing member has a stiffness that defines the force. 13. The door lock assembly of claim 10, wherein the locking mechanism includes a push-bar operable to place the latchbolt in the unlocked configuration from the locked configuration. 14. A door lock assembly for use with a door hingedly coupled to a door frame including a strike such that the door rotates about an axis between a closed position and an open position, the door lock assembly comprising: a housing configured to couple to the door such that the housing is substantially fixed with respect to door; a latchbolt configured to engage the strike to substantially prevent rotation of the door from the closed position to the open position, the latchbolt including, a first member configured to engage the strike and rotate with respect to the housing about a first axis when the door moves from the open position toward the closed position, a second member configured to engage the strike and movably coupled to the first member such that the second member moves relative to the first member from a first position to a second position in response to a force applied in an opening direction to the door, wherein an engagement point is defined as the point on the strike where the latchbolt contacts the strike when the door is in the closed position; wherein an engagement angle is defined as the angle between a line that extends from the center of the strike through the engagement point and a plane that extends generally vertically and generally to normal to the door frame; and wherein the latchbolt is configured to engage the strike when the door is in the closed position at a first engagement angle when the second member is in the first position and a second engagement angle when the second member is in the second position that is different from the first engagement angle while the first member is generally prevented from movement with respect to the housing. 15. The door lock assembly of claim 14, wherein the second engagement angle is between about 80 degrees and about 110 degrees. 16. The door lock assembly of claim 15, wherein the second engagement angle is about 90 degrees. 17. The door lock assembly of claim 14, wherein the first engagement angle is between about 30 degrees and about 80 degrees. 18. The door lock assembly of claim 14, wherein the latchbolt engages the strike at the second engagement angle in response to a force applied to the door in the closed position. 19. The door lock assembly of claim 18, wherein the first member at least partially defines a cavity, and wherein the second member is at least partially received by the cavity when the second member is in the second position, and wherein the latchbolt includes a biasing member located at least partially within the cavity and configured to bias the second member into the first position. 20. A door lock assembly for use with a door hingedly coupled to a door frame including a strike such that the door rotates about an axis between a closed position and an open position, the door lock assembly comprising: a latchbolt that engages the strike to retain the door in the closed position, the latchbolt including, a first member configured to engage the strike as the door moves toward the closed position to cause the latchbolt to move in a first direction and after the door closes the latchbolt moves in a second direction, a second member movably coupled to the first member where both members are configured to directly engage the strike when the door is in the closed position preventing rotation of the door, an exterior handle manually operable to rotate the door toward the open position when the lock assembly is in an unlocked configuration and inoperable to rotate the door toward the open position when the lock assembly is in a locked configuration, wherein when a force is applied to the exterior handle in a direction to rotate the door toward the open position when the door lock assembly is in the locked configuration, the force causes the second member to move with respect to the first member until the first member directly engages the strike preventing rotation of the door. 21. The door lock assembly of claim 20, wherein the first member at least partially defines a cavity, wherein a portion of the second member is received within the cavity, and wherein the latchbolt includes a biasing member located at least partially within the cavity and configured to bias the second member with respect to the first member. 22. The door lock assembly of claim 20, wherein the second member is coupled to the first member for rotation with respect to the first member, and wherein the second member is coupled to the first member for co-rotation with the first member with respect to the door. 23. The door lock assembly of claim 20, wherein the latchbolt is movable between an extended position and a retracted position, wherein the latchbolt includes a first surface that engages the strike at a first angle when the latchbolt is in the extended position and the door is in the closed position, engagement of the strike by the first surface when the latchbolt is in the locked configuration and in the extended position resisting movement of the door toward the open position, and engagement of the strike by the first surface when the latchbolt is in the locked configuration and in the extended position and when sufficient force is applied to the door causing the first surface to move so that a second surface of the latchbolt engages the strike at a second angle different from the first angle, engagement of the strike by the second surface resisting further movement of the door toward the open position. 24. The door lock assembly of claim 23 wherein the door defines a plane when the door is in the closed position, wherein the first angle is neither perpendicular to nor parallel to the plane, and wherein the second angle is substantially perpendicular to the plane. 25. A door lock assembly for use with a door coupled to a door frame such that the door moves between a closed position and an open position, the door lock assembly comprising: a strike configured to be mounted on the door frame; a housing configured to be mounted on the door; a latchbolt supported by the housing for movement between an extended position and a retracted position; and an operator actuatable mechanism for locking the latchbolt in the extended position; the latchbolt having a first surface that engages the strike at a first angle when the latchbolt is in the extended position and the door is in the closed position, engagement of the strike by the first surface when the latchbolt is locked in the extended position resisting movement of the door toward the open position, and engagement of the strike by the first surface when the latchbolt is locked in the extended position and when sufficient force is applied to the door causing the first surface to move so that a second surface of the latchbolt engages the strike at a second angle different from the first angle, direct engagement of the strike by the first and second surface resisting further movement of the door toward the open position. 26. The door lock assembly of claim 25, wherein the door defines a plane when the door is in the closed position, wherein the first angle is neither perpendicular to nor parallel to the plane, and wherein the second angle is substantially perpendicular to the plane. 27. A door lock assembly for use with a door hingedly coupled to a door frame and including a strike such that the door rotates about an axis between a closed position and an open position, the door lock assembly comprising: an exterior handle; a locking mechanism that includes a housing and a locking member movably coupled to the housing, the locking member moves between a locked configuration and an unlocked configuration; an interior actuator manually operable to move the locking member with respect to the housing; and a latchbolt movable with respect to the housing between an extended position and a retracted position, the latchbolt configured to engage the strike to retain the door in the closed position when the locking member is in the locked configuration and the latchbolt is in the extended position and the latchbolt moves to the retracted position by the exterior handle when the locking member is in the unlocked configuration to allow a rotation of the door toward the open position, the latchbolt including, a first member including an outer surface configured to directly contact the strike as the door moves from the open position toward the closed position, a flat surface, and a cavity, a second member at least partially received within the cavity of the first member and coupled to the first member such that the first and second members generally move together when the latchbolt moves between the extended and retracted positions, the second member movably coupled to the first member such that the second member moves relative to the first member from a first position to a second position, the second member including a curved surface configured to directly contact the strike along with the first member when the door is in the closed position preventing rotation of the door, a biasing member located at least partially within the cavity of the first member and between the first member and the second member to bias the second member toward the second position, wherein when a force is applied to the exterior handle in a direction to rotate the door toward the open position when the locking member is in the locked configuration and the door is in the closed position, the force causes the second member to move with respect to the first member thereby causing the flat surface of the first member to directly engage the strike preventing rotation of the door. 28. The door lock assembly of claim 1, wherein the second member includes a lip that engages a portion of the first member when the second member is in the first position, and wherein the lip is spaced apart from the portion of the first member when the second member is in the second position.
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