IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0738242
(2003-12-17)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
16 |
초록
▼
A lever-type latch assembly is mountable onto an outer edge rail of a PC board or module. The lever portion pivots on a base mounted to the edge rail. An ergonomically shaped catch slides within the lever and has a pair of tab bearing snap fingers that ride on shoulders on the inner sidewalls of the
A lever-type latch assembly is mountable onto an outer edge rail of a PC board or module. The lever portion pivots on a base mounted to the edge rail. An ergonomically shaped catch slides within the lever and has a pair of tab bearing snap fingers that ride on shoulders on the inner sidewalls of the lever. A pawl extends outwardly from the pivoted end of the lever having a pair of feet straddling the base mount. Alternately, a bump can be included on the base to provide a detent function. The slide catch carries a pair of locking tabs. The base includes a pair of mating locking tabs. The catch is spring biased towards the base pivot position, thereby biasing the catch looking tabs into overlapping contact with the base locking tabs. The catch can have a flat outer face for a product label.
대표청구항
▼
1. A rotatable lever-type latch for mounting to an outer edge rail of a PC board or module for selectively engaging various portions of a keeper for effecting an injection or an ejection of said PC board or module, comprising:a base capable of being attached to said outer edge rail;a lever pivotally
1. A rotatable lever-type latch for mounting to an outer edge rail of a PC board or module for selectively engaging various portions of a keeper for effecting an injection or an ejection of said PC board or module, comprising:a base capable of being attached to said outer edge rail;a lever pivotally mounted to said base and rotatable between an outward extending open position and a closed position parallel to said edge rail;a pawl connected to one end of said lever, said pawl engaging said various portions of said keeper, upon the rotation of said lever between positions, which positions are a rotated open and a rotated closed position;a catch, mounted onto said lever for slidable engagement therewith, said catch being biased to a first position;wherein said base includes a pair of locking projections;wherein said catch includes a pair of locking projections; andwherein said catch locking projections each engage a respective one of said base locking projections when said lever is in said closed position.2. The latch of claim 1, wherein said base includes an upward-outwardly standing wall, said lever being pivotally mounted to said base by a pivot bearing on said base standing wall.3. The latch of claim 2, wherein said catch includes a longitudinally-outwardly and upward-outwardly extending arm at the end thereof adjacent said base standing wall, and wherein said catch is spring biased to said first position, said first position being the catch locking position wherein said catch extending arm is in contact with said base standing wall.4. The latch of claim 3, wherein said base locking projections are sequentially spaced and extend away from said base projecting wall, and wherein said catch locking projections are sequentially longitudinally spaced along said catch and extend towards said base projecting wall and towards said base locking projections.5. The latch of claim 4, wherein when said catch is spring biased to said catch locking position said catch locking projections engage said base locking projections.6. The latch of claim 5, wherein each said catch locking projection includes a tapered camming surface which enables the respective catch locking projection to ride over the respective base locking projection by camming against the end of the base locking projection thereby moving said catch away from said base standing wall pivot bearing position against the spring biasing force.7. The latch of claim 6, wherein said lever has an elongate opening there through, a recessed slide way on the outer face thereof, and longitudinally extending shoulders on each inner sidewall; and wherein said catch has a flat plate-like portion which slides in said recessed slide way of said latch, an extending arm projecting from the end thereof adjacent said base standing wall, and an ergonomic shaped finger tab extending outwardly from the end opposite said extending arm.8. The latch of claim 7, wherein said catch also includes a pair to parallel extending snap fingers which engage said lever inner sidewall shoulders and retain said catch in said lever recessed slide way while permitting the longitudinal movement of said catch with respect to said lever.9. The latch of claim 8, wherein at least one of said catch locking projections is adjacent the location of said ergonomic shaped finger tab, and wherein said latch also includes a detent adjacent said base standing wall pivot bearing location.10. A inject-eject latch for computer a board, card, and module, mountable into a rack or housing, said latch comprising:a base mountable to said board, card and module having an projecting wall with a pivot bearing point;a lever pivotally mounted to said base at said bearing point;a pawl connected to said lever and moved by the pivotal operation thereof for engaging a keeper associated with a rack or housing; anda catch mounted on said lever for longitudinal slide operation with respect to said lever between a locking position and an unlocked position;wherein said catch carries a plurality of locking projections;wherein said base carries a plurality of locking projections; andwherein when said catch is in said locking position said catch and said base locking projections engage respectively one to one to lock said lever to said base.11. The inject-eject latch of claim 10, also including a biasing means for biasing said catch to said locking position, and wherein said catch locking projections are sequentially positioned and wherein said base locking positions are sequentially positioned.12. The inject-eject latch of claim 11, wherein when said catch is in said locking position and said lever is locked to said base and wherein said locking inhibits pivotal rotation.13. The inject-eject latch of claim 12, wherein said lever rotates between an open position and a closed position and which rotational movement carries said pawl respectively between an eject end position and an inject end position, and wherein said pawl includes a pair of parallel extending feet which straddle said base projecting wall, wherein said pawl feet axially interfere with said base projecting wall when said pawl is in said eject end position.14. The inject-eject latch of claim 13, wherein said pawl feet carry juxtaposed projections, at the free ends thereof, said projection providing said axial interference with said base projecting wall.15. The inject-eject latch of claim 13, wherein said pawl feet taper inwardly toward each other at the free ends thereof and thereby reducing the space there between, said taper providing said axial interference with said base projecting wall.16. The inject-eject latch of one of claim 14 or 15, wherein said lever includes a longitudinal opening accessing pair of interior longitudinal sidewalls thereof, each said interior sidewall having a longitudinally extending shoulder, and wherein said catch includes a pair of projecting snap fingers each having tabs at the free ends thereof, said fingers extending into said lever opening with said catch finger tabs engaging said respective lever inside shoulders.17. The inject-eject latch of claim 16, wherein said catch finger tabs engagement with said lever shoulders permits the longitudinal sliding of said catch with respect to said lever.18. The inject-eject latch of one of claim 14 or 15, wherein said base projecting wall includes a rounded outer face about said pivot bearing point, and wherein said catch includes and longitudinally outwardly and upward-outwardly projecting arm, said arm having a portion of the surface thereof in contact with the projecting wall rounded outer face when said catch is biased to said locking position.19. The inject-eject latch of claim 13, wherein said base projecting wall includes a rounded outer face about said pivot bearing point, and wherein said catch includes and longitudinally-outwardly and upward-outwardly projecting arm, said arm having a portion of the surface thereof in contact with the base projecting wall rounded outer face when said catch is in said locking position, and also including a projecting bump on said base projecting wall rounded outer face, wherein said catch projecting arm engages said bump in a detent function when said lever and pawl are in said eject end position.20. The inject-ejection latch of claim 19, wherein said catch also includes an upward-outwardly projecting ergonomic shaped finger tap adjacent the end thereof opposite said outwardly projecting arm, and wherein said latch includes a finger grip tail at the free end thereof adjacent said catch ergonomic shaped finger tab.
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