[특허]Latch with bail-type mounting

Southco, Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Latch with bail-type mounting

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01R-013/73
미국특허분류(USC)	439/565; 439/545
출원번호	US-0159890 (2002-06-01)
발명자 / 주소	Welsh, Thomas W. Bucci, Michael S. Schlack, Richard E.
출원인 / 주소	Southco, Inc.
대리인 / 주소	Paul &
인용정보	피인용 횟수 : 15 인용 특허 : 23

초록
▼

The present invention is a pawl latch which is adapted to be mounted to a first member, such as a closure panel of drawer face plate for releasably retaining the closure panel against an enclosure. Such drawer is suitable for implementing an electronic module which plugs into the backplane of the enclosure. The latch has spring-assisted engagement and disengagement of its pawl with the edge of an enclosure opening against which the pawl operates. This results in spring-assisted inject and eject functions for connecting and disconnecting any associate backplane connection. The latch is low profile with a narrow footprint and has an EMI and ESD event preventive coating on the surface of the housing and appropriate components thereof. A pull handle is substantially flush with the outside face of the latch housing and cooperates with a button spring activator member, when the handle is in the closed position.

대표
청구항
▼

1. An inject-eject latch for holding a module in an enclosure and against a wall thereof, and also selectively releasing it for removal, said latch being releasably mounted to a plate member of said module, said latch comprising:a housing having a cavity and an open wall; a pull handle mounted to rotate from one end of the housing outwardly through the housing open wall; a pawl projecting from one end of the housing and connected to the pull latch to move to a closed position when the pull handle is rotated to be within the housing and said pawl to move to an open position when the pull handle is rotated to the fully open position upwardly from the housing; a biasing spring positioned to move the pull handle upwardly out of the housing and pawl to the open position; and a release button connected to the handle and releasing said handle to move under biasing spring force when said button is operated; and a wire-like clamping means for holding the housing to said plate and releasing the housing therefrom, said clamping means being deformable under relatively light pressure to engage and disengage with holding members. 2. The inject-eject latch of claim 1 also including an EMI and ESD preventative coating on said housing.3. The inject-eject latch of claim 2 also including an EMI and ESD preventative coating on said pull handle, said pawl, said biasing spring, said release button and said clamping means.4. The inject-eject latch of claim 1 wherein said clamping means includes a wire bail open loop shaped to extend around said housing, rotationally mounted to the side walls of said housing to rotate parallel to the length of the housing and orthogonal thereto.5. The inject-eject latch of claim 4 wherein said module includes a connector at the rear thereof and said enclosure includes a back plane connector for connecting with and disconnecting from said module connector; and wherein said biasing spring is has a force to perform said module connector injection in to said back plane connector and to perform said module connector ejection form said back plane connector.6. The inject-eject latch of claim 5 wherein said housing is elongate having two side walls and end walls, and also including a first pivot shaft extending between said housing side walls within said housing cavity adjacent said pawl end of said housing, wherein one end of said pull handle is mounted onto said pivot shaft for rotation.7. The inject-eject latch of claim 6 also including a second pivot shaft extending between said housing side walls parallel to said first pivot shaft, and wherein said release button includes a rotational journal by which it is mounted for rotation on said second pivot shaft.8. The inject-eject latch of claim 7 wherein said pull handle includes an opening, and wherein said release button has an outward face which extends through said pull handle opening when said pull handle is in its closed position away from its open outwardly extending position.9. The inject-eject latch of claim 8 wherein said pull handle opening includes a lip.10. The inject-eject latch of claim 9 wherein said release button includes a head having a projecting lip, said release button projecting lip engaging said pull handle opening lip when said pull handle is in its closed position.11. The inject-eject latch of claim 10 wherein said pull handle include a pair of projecting journal plates extending parallel to the side walls of said housing, said projecting journal plates being used to mount said pull handle on said first pivot shaft.12. The inject-eject latch of claim 11 wherein said release button carries a second lip adjacent its second pivot shaft pivot location, said second lip being blade shaped.13. The inject-eject latch of claim 12 wherein said pawl is a claw-shaped plate, and also including a third pivot shaft extending between said pull handle projecting journal plates, wherein said pawl plate is mounted for rotation on said third pivot shaft.14. The inject-eject latch of claim 13 wherein said biasing spring includes a pair of extending fingers, said fingers engaging said release button second lip.15. The inject-eject latch of claim 14 also including a slot in said pawl plate said slot permitting said third pivot shaft to extend there through.16. The inject-eject latch of claim 15 also including a slot in each side wall of said housing, wherein the ends of said third pivot shaft extend respectively one each into a respective said side wall slot.17. The inject-eject latch of claim 16 wherein said wire bail open loop has its two free ends are bent inward, and wherein said first pivot shaft is a hollow tube with open ends, and wherein said wire bail fee end inward bends are fitted into respective open ends of said hollow first pivot shaft for said rotation.18. The inject-eject latch of claim 17 also including a pair of stops mounted to the opposing side wall of said housing cavity and positioned to act as a rotational stop for the rotation of said release button.19. The inject-eject latch of claim 18 wherein said pull handle also include a projecting plate foot which seats against the bottom of said housing cavity when said pull handle is in its closed position.20. The inject-eject latch of claim 19 wherein said housing side wall slots and said pawl plate slot are each curvilinear.21. The inject-eject latch of claim 20 wherein said clamping means also includes an engagement structure mounted on the outside face of each side wall of said housing, said structure being capable of mating with and holding said wire bail loop.22. The inject-eject latch of claim 21 wherein said wire bail loop includes a plurality of resiliently flexible bends.23. The inject-eject latch of claim 22 wherein some of said plurality of wire bail loop bends face said plate when said housing carrying said wire bail loop is mounted on said plate member.24. The inject-eject latch of claim 23 wherein said engagement structure includes a ramp-shaped projection extending one each from the outside face of side wall of said housing, said wire bail loop being capable of flexible deformation to ride over each ramp-shaped projection and to secured thereby and of flexible deformation to be released there from.25. The inject-eject latch of claim 24 wherein said flexible deformation of said wire bail loop is accomplished by finger pressure.26. The inject-eject latch of claim 25 wherein said housing has an EMI and ESD preventative coating.27. An inject-eject latch for holding a module in an enclosure and against a wall thereof, and also selectively releasing it for removal, said latch being releasably mounted to a plate member of said module through a mounting opening in the plate member, said latch comprising:a housing having a cavity and an open wall; a pull handle mounted to rotate from one end of the housing outwardly through the housing open wall; a pawl projecting from one end of the housing and connected to the pull latch to move to a closed position when the pull handle is rotated to be within the housing and said pawl to move to an open position when the pull handle is rotated to the fully open position upwardly from the housing; a biasing spring positioned to move the pull handle upwardly out of the housing and pawl to the open position; and a release button connected to the handle and releasing said handle to move under biasing spring force when said button is operated; and a cradle-like mounting means for holding the housing to said plate and releasing the housing therefrom, said cradle-like mounting means being attached to the bottom of said housing and having upward standing sides being deformable when said housing is inserted or extracted from said mounting opening, said deforming permitting the housing and cradle-like mounting means to slide there through, where upon the cradle-like mounting means returns to shape to press against said plate thereby securing said latch. 28. The inject-eject latch of claim 27 also including an EMI and ESD preventative coating on said housing.29. The inject-eject latch of claim 28 also including an EMI and ESD preventative coating on said pull handle, said pawl, said release button and said cradle-like mounting means.30. An inject-eject latch for holding a module in an enclosure and against a wall thereof, and also selectively releasing it for removal, said latch being releasably mounted to a plate member of said module through a mounting opening in the plate member, said latch comprising:a housing having a cavity and an open wall; a pull handle mounted to rotate from one end of the housing outwardly through the housing open wall and having a blade extension operating through one end of the housing as a pawl; wherein the pawl projecting from one end of the housing and connected to the pull latch to move to a closed position when the pull handle is rotated to be within the housing and said pawl to move to an open position when the pull handle is rotated to the fully open position upwardly from the housing; a biasing spring positioned to move the pull handle upwardly out of the housing and pawl to the open position; and a release button connected to the handle and releasing said handle to move under biasing spring force when said button is operated; and a flat spring mounting means mounted to the opposite end of the housing from the pawl projection, said flat spring holding the housing to said plate and releasing the housing therefrom, said flat spring being deformable when said housing is inserted or extracted from said mounting opening, said deforming permitting the housing and the flat spring slide there through, where upon the flat spring returns to shape to press against said plate for securing said latch. 31. The inject-eject latch of claim 30 also including a deformable mounting clip for engaging the flat spring and adjusting the position thereof to the edge of said mounting opening.32. The inject-eject latch of claim 30 also including an EMI and ESD preventative coating on said housing.33. The inject-eject latch of claim 32 also including an EMI and ESD preventative coating on said pull handle.34. An inject-eject latch for holding a module in an enclosure and against a wall thereof, and also selectively releasing it for removal, said latch being releasably mounted to a plate member of said module, said latch comprising:a housing having a cavity and an open wall; a pull handle mounted to rotate from one end of the housing outwardly through the housing open wall; a plate-type pawl projecting from one end of the housing and connected to the pull latch to move to a closed position when the pull handle is rotated to be within the housing and said pawl to move to an open position when the pull handle is rotated to the fully open position upwardly from the housing; a biasing spring positioned to move the pull handle upwardly out of the housing and pawl to the open position; and a release button connected to the handle and releasing said handle to move under biasing spring force when said button is operated; and a wire-like clamping means for holding the housing to said plate and releasing the housing therefrom, said clamping means being deformable under relatively light pressure to engage and disengage with holding members; wherein said plate-type pawl includes a longitudinal aperture which is connected to limit the extent of movement of said pull handle after the disengagement from said button. 35. The inject-eject latch of claim 34 also including an EMI and ESD preventative coating on said housing.36. The inject-eject latch of claim 35 also including an EMI and ESD preventative coating on said pull handle, said plate-type pawl, said release button and said wire-like clamping means.37. An inject-eject latch for holding a module in an enclosure and against a wall thereof, and also selectively releasing it for removal, said latch being releasably mounted to a plate member of said module, said latch comprising:a housing having a cavity and an open wall; a pull handle mounted to rotate from one end of the housing outwardly through the housing open wall; a pawl projecting from one end of the housing and connected to the pull latch to move to a closed position when the pull handle is rotated to be within the housing and said pawl to move to an open position when the pull handle is rotated to the fully open position upwardly from the housing; a biasing spring positioned between an inside wall of the housing and a camming portion of the pawl to act to slide the pawl outwardly; wherein the pull handle includes a hook portion which cames against the camming portion of the pawl to withdraw it into the housing; and a wire-like clamping means for holding the housing to said plate and releasing the housing therefrom, said clamping means being deformable under relatively light pressure to engage and disengage with holding members; wherein said plate-type pawl includes a longitudinal aperture which is connected to limit the extent of movement of said pull handle after the disengagement from said button. 38. The inject-eject latch of claim 37 also including an EMI and ESD preventative coating on said housing.39. The inject-eject latch of claim 38 also including an EMI and ESD preventative coating on said pull handle, said pawl and said release button.40. A bail clamping structure for holding a housing securely to a plate, said housing extending from an outward face of the plate through a cutout opening in the plate, said clamping structure being quick mount and quick release from the inward face of the plate, said clamping structure comprising:a housing having a face flange extending laterally outwardly thereabout and a pivot accommodating structure at one end thereof; a bail being sized and shaped to surround a portion of said housing and being pivotally mounted to the pivot accommodating structure of said housing; wherein said cutout opening is sized to pass said housing and seat said housing face flange against said outer face of said plate; wherein said cutout opening includes bump-out notch openings to pass said bail when said bail is rotated to extend orthogonal to said notch openings; and receiving structure on opposite sides of the housing for receiving a part of said bail and holding said in fixed engagement with said housing when said bail is rotated to extend parallel to said inside face of said plate; and wherein said bail is in spring force engagement against said inside face of said plate when said bail is in fixed engagement with said housing and said housing seats through said cutout opening with said flange thereof seated on said outside face of said plate. 41. The bail clamping structure of claim 40 wherein said receiving structure is a pair of ramps positioned on opposite sides of said housing, said bail being deformable to ride over said ramps and then be in locked abutment thereto; andwherein said bail includes a plurality of projecting sections which engage said inside face of said plate in spring force engagement thereby effecting a spring force engagement of said bail portions to said ramps resulting in said locked abutment. 42. The bail clamping structure of claim 40 wherein said receiving structure is a pair of elongate slots positioned on opposite sides of said housing;wherein said bail includes a pair of inwardly juxtaposed facing bends which are capable of engaging and projecting into said housing elongate slots, one said inward bend respectively with a elongate slot said bail being fixed to said housing when said inward bends engage said elongate housing slots; and wherein said bail includes a plurality of projecting sections which engage said inside face of said plate in spring force engagement when said inward bend projectedly engage said elongate slots. 43. The bail clamping structure of claim 42 also including an attachment slot on a plate attached to the inside of said plate; andwherein said bail includes a third bend for engaging said plate slot when said inward bends engage said housing elongate slots thereby fixing said bail to said plate. wherein said bail is deformable for said inward bends to ride over the housing prior to projecting into said elongate slots. 44. A method for securing and quick release mounting of a housing to a plate, said plate having a outside face and an inside face, which housing when mounted extends through a complementary opening in a plate, comprising the steps of:providing an opening in said plate for receiving said housing; providing an abutment structure on said housing for establishing a fully seated position of said housing in said plate opening; providing a resiliently flexible clamp carried on said housing for fixing said housing securely to said plate when said housing is fully seated in said plate opening; providing notch-out openings in a portion of said plate opening for passing said clamp; rotating said clamping to extend orthogonal to said plate opening; providing clamp engagement structure on said housing side walls; passing said housing into said plate opening to fully seat it therein by abutting said abutment structure against the outside face of said plate, wherein said orthogonal positioned clamping means passes through said notch-out openings and is entirely on the inside face side of the plate when said housing is fully seated; and rotating said clamping to extend parallel to the inside face of said plate and engaging said housing side wall clamp engagement structure to fix said clamp thereto, whereby said clamp exerts a spring force against the inside face of said plate holding the housing abutment structure fast against the outside face of the plate. 45. The method of claim 44, also including the step of flexibly deforming said clamp to have it engage said housing side wall clamp engagement structure.46. The method of claim 45 wherein the step of rotating said clamp to extend orthogonal is done under finger pressure; and wherein the step of rotating said clamp to extend parallel to the inside face of said plate is done with finger pressure.47. The method of claim 46 wherein the step of flexibly deforming said clamp to have it engage said housing side wall clamp engagement structure is deforming with finger pressure.48. The method of claim 47 also including the steps of:flexibly deforming said clamp to disengage it from said housing side wall clamp engagement structure; rotating said clamp to be orthogonal to said plate; and removing said housing and said clamp from said plate by passing said housing out of said plate opening and said clamp though said plate opening notch-outs to be on the outside face of said plate. 49. The method of claim 48 also including before the step of rotating said clamp to extend orthogonal, a step of providing a clamp engagement structure on the inside face of said plate; and wherein the step of rotating said clamp to extend parallel also includes wherein said clamp also engages said plate inside face clamp engagement structure to fix the clamp thereto.50. The method of claim 49 wherein said step of rotating said clamp to extend parallel wherein said clamp engages said plate inside face clamp engagement structure includes the step of flexibly deforming said clamp to achieve the engagement.51. The method of claim 50 wherein the step of achieving the engagement of said clamp with said plate inside face clamp engagement structure includes flexibly deforming said clamp with finger pressure.52. The method of claim 51 wherein the step of flexibly deforming said clamp to disengage it from said housing side wall clamp also includes simultaneously flexibly deforming said clamp to simultaneously disengage it from said plate inside face clamp engagement structure.53. The method of claim 52 wherein the steps of flexibly deforming said clamp to disengage and the rotating said clamp to be orthogonal are done with finger pressure.54. A wire bail-type quick mount, quick release, clamping device for holding a housing securely on a plate with the housing having an abutment for seating on the outside face of the plate, said housing extending through an opening in said plate to extend beyond the inside face of said plate, whereof the plate opening has a plurality of notch-outs, said clamping device comprising:a wire bail mounted onto the side walls of said housing and rotatable from a rotation point on said side wall to extend parallel to the plane of said housing side walls and orthogonal to said housing abutment and also rotatable to extend parallel to the plane of said housing abutment; wherein when extending parallel to the plane of said housing abutment said wire bail extends along each side wall of said the housing and around one end of said housing forming an open loop; wherein said wire bail portion lengths for extending along each side wall of said housing defines the two side legs of said wire bail, and wherein said wire bail portion length for extending around one end of said housing defines the end section of said wire bail; a first resiliently flexible bend in each side leg of said wire bail; a wire bail engagement and holding member on each sidewall of said housing, wherein said engagement is achieved by deforming said wire bail side legs to ride over said housing side walls; and wherein said wire bail rotation point is positioned to pass the wire bail in orthogonal position and said wire bail engagement and holding members through said plate opening notch-outs when said housing is inserted into said plate opening. 55. The device of claim 54 wherein said side leg section bends extend towards the plane of said plate when said wire bail is rotated to extend parallel to the plane of said plate.56. The device of claim 55 wherein said rotation point for said wire bail is located to have said wire bail entirely on the inside of said plate when said housing is fully seated with said housing abutment against said outside face of said plate.57. The device of claim 56 wherein said side legs section bends extending towards the plane of said plate resiliently engage the inside face of said plate when rotated parallel thereto and said wire bail is held by said housing side wall engagement members.58. The device of claim 57 wherein said wire bail side legs are each resiliently deformable under finger pressure.59. The device of claim 58 also including a bend in the end section of said wire bail.60. The device of claim 59 wherein the free end of each side leg of said wire bail includes a rotational end being a turn in of the wire with the turn in extensions being juxtaposed.61. The device of claim 60 wherein the end section bend of said wire bail extends towards the free end of said wire bail.62. The device of claim 61 wherein each said wire bail engagement and holding member is a projection from a respective side wall of said housing.63. The device of claim 62 wherein said finger pressure resilient deformation of each wire bail side leg is sufficient for each side leg to pass over a respective projection to be held in fixed position thereby.64. The device of claim 63 wherein each said housing side wall projections includes a ramped outer face.65. The device of claim 64 wherein each side leg of said wire bail includes a second resiliently flexible bend extending in the same direction as the first bend in the side leg.66. The device of claim 65 wherein each said bend in said wire bail is a V-shaped bend.67. The device of claim 61 wherein each said wire bail engagement and holding member is an elongate slot in a respective side wall of said housing, and wherein each side leg of said wire bail also includes a second bend positioned and pointing to engage a respective housing side wall slot.68. The device of claim 67 also including a plate extending away from the inside face of said plate and positioned to receive the wire bail end section bend.69. The device of claim 68 also including a plurality of slide plates extending outwardly from the inside face of said plate, said slide plate contacting said housing side walls when said housing extend through said plate opening.70. The device of claim 69 also including a third resiliently flexible bend in each wire bail side leg extending parallel to said first bend.71. The device of claim 70 wherein the first and third bends in each side leg of said wire bail and the end section bend of said wire bail are V-shaped.72. The device of claim 71 wherein the second slot engaging bend in each wire bail side leg is U-shaped.

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Latch with bail-type mounting

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IPC 상세정보(version : 201201)

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특허 상세정보

Latch with bail-type mounting

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (23)

이 특허를 인용한 특허 (15)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼