[특허]Electromechanical compression latch

Southco, Inc.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Electromechanical compression latch

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E05C-003/06 E05C-003/00
미국특허분류(USC)	292/201; 292/216; 292/280
출원번호	US-0049875 (2011-03-16)
등록번호	US-8672368 (2014-03-18)
발명자 / 주소	Grosdemouge, Thibaut Bernard Paul
출원인 / 주소	Southco, Inc.
대리인 / 주소	Paul & Paul
인용정보	피인용 횟수 : 4 인용 특허 : 130

초록
▼

The present invention is directed to improvements in latch design. The illustrated embodiment of the present invention is a rotary pawl latch with the capability to provide a compressive force between the first member and the second member. The illustrated embodiment of the present invention is of an electromechanical type. The control circuit of the latch detects when a striker attached to one member, for example a door, has moved the pawl to a first latched position. A motor is then activated that drives the pawl to a second latched position to provide...

대표
청구항
▼

1. A latch (200) adapted for securing a closure member (300) in a predetermined position, the closure member being provided with a striker (308), the latch comprising: a latch housing (202);a pawl (204);a trigger (206), wherein said trigger (206) is biased into engagement with said pawl (204), said trigger (206) engaging said pawl (204) to thereby hold said pawl (204) in one of a first latched position and a second latched position, said trigger (206) being movable out of engagement with said pawl (204) to thereby allow said pawl to move to an unlatched position;a cam gear (218) including a gear wheel (222) and a first cam (203), said cam gear (218) being rotationally supported in said housing (202) for rotation about an axis of rotation, said first cam (203) having a cam lobe (207) located at a distance from said axis of rotation of said cam gear (218), said first cam (203) acting to drive said pawl (204) from said first latched position to said second latched position when said cam gear (218) is rotated in a first direction;a circuit board (230);a latch control circuit (235);a motor (210) selectively powering rotation of said cam gear; andat least two sensors (332, 326), including a first sensor (332) and a second sensor (326), mounted on said circuit board (230);wherein said pawl (204) is provided with a pawl slot (258) to capture and hold the striker (308) when said pawl (204) is in one of said first latched position and said second latched position, wherein with said pawl (204) initially in said unlatched configuration, as the closure member (300) is closed, the striker (308) will be positioned and captured in said pawl slot (258) with said pawl (204) being moved to said first latched position, andwherein said first sensor (332) detects when said pawl (204) reaches said first latched position, whereupon said first sensor (332) generates a signal to said latch control circuit (235) that causes electrical current to be supplied to said motor (210) to thereby cause rotation of said cam gear (218) to move said pawl (204) to said second latched position. 2. The latch according to claim 1, wherein the latch (200) is adapted for attachment to a second member such that the latch can be engaged by the striker (308) for securing the closure member (300) in the predetermined position relative to the second member. 3. The latch according to claim 1, wherein said housing (202) has an opening latch according to claim 1, wherein said housing (202) has an opening that allows at least a portion of the striker (308) to enter said housing (202) for engagement by said pawl (204). 4. The latch according to claim 3, wherein the latch further comprises a support plate (215) fixedly positioned within said housing (202), said opening is in the form of a slot (212) that passes through a first portion (211) of said housing (202), said slot (212) forms an open, approximately U-shaped cut-out in said housing (202) as viewed in profile, said slot (212) allows an unobstructed path for the striker (308) to engage said pawl (204) when said pawl is in an open configuration relative to said support plate (215), and said slot (212) is sized such that said housing (202) will not interfere with movement of the striker (308) relative to said housing (202) as said pawl (204) is moved from an open configuration to a closed configuration relative to said support plate (215) by contact with the striker (308) and as said pawl (204) is rotated from said first latched position to said second latched position relative to said housing (202) by said electrically operated actuator assembly (208). 5. The latch according to claim 1, wherein said cam gear (218) further comprises a second cam (205), wherein said first cam (203) acts to drive said pawl (204) from said first latched position to said second latched position when said cam gear (218) is rotated in a first direction, wherein said second cam (205) is in the form of a raised, arc-shaped, and elongated rib eccentrically positioned relative to said axis of rotation of said cam gear (218), and wherein said second cam (205) acts to disengage said trigger from said pawl when said cam gear is rotated in a second direction opposite said first direction. 6. The latch according to claim 5, further comprising: a one-way trigger actuating lever (286) mounted so as to be rotatable about a common axis with said trigger (206), said trigger actuator lever (286) has a one-way rotation stop (236), said one-way rotation stop (236) is biased into engagement with said trigger (206), said one-way rotation stop (236) blocks relative rotation between said trigger (206) and said trigger actuating lever (286) when said one-way rotation stop (236) is in engagement with said trigger (206) and said trigger actuating lever (286) is being used to rotate said trigger (206) together with said trigger actuating lever (286) in a first direction, said one-way rotation stop (236) does not block relative rotation between said trigger (206) and said trigger actuating lever (286) when said trigger actuating lever (286) is being rotated in a second direction opposite said first direction, such that said trigger actuating lever (286) moves said trigger (206) when rotated in said first direction, but that does not move said trigger (206) when rotated in said second direction. 7. The latch according to claim 5, wherein said second sensor (326) is used to detect the position of said cam gear (218), wherein said second sensor (326) at least detects when said cam gear (218) is in its starting position, and wherein said second sensor (326) then generates a signal to said latch control circuit (235) when said cam gear (218) is in its starting position to thereby allow said latch control circuit (235) to detect that said cam gear (218) is in its starting position. 8. The latch according to claim 7, further comprising: a one-way trigger actuating lever (286) mounted so as to be rotatable about a common axis with said trigger (206), said trigger actuator lever (286) has a one-way rotation stop (236), said one-way rotation stop (236) is biased into engagement with said trigger (206), said one-way rotation stop (236) blocks relative rotation between said trigger (206) and said trigger actuating lever (286) when said one-way rotation stop (236) is in engagement with said trigger (206) and said trigger actuating lever (286) is being used to rotate said trigger (206) together with said trigger actuating lever (286) in a first direction, said one-way rotation stop (236) does not block relative rotation between said trigger (206) and said trigger actuating lever (286) when said trigger actuating lever (286) is being rotated in a second direction opposite said first direction, such that said trigger actuating lever (286) moves said trigger (206) when rotated in said first direction, but that does not move said trigger (206) when rotated in said second direction. 9. The latch according to claim 7, further comprising a third sensor (316) provided on said circuit board (230), wherein said third sensor (316) is used to detect when said pawl (204) reaches said second latched position, whereupon said third sensor (316) generates a signal to said latch control circuit (235) to thereby allow said latch control circuit (235) to detect when said pawl (204) is in said second latched position. 10. The latch according to claim 9, further comprising: a one-way trigger actuating lever (286) mounted so as to be rotatable about a common axis with said trigger (206), said trigger actuator lever (286) has a one-way rotation stop (236), said one-way rotation stop (236) is biased into engagement with said trigger (206), said one-way rotation stop (236) blocks relative rotation between said trigger (206) and said trigger actuating lever (286) when said one-way rotation stop (236) is in engagement with said trigger (206) and said trigger actuating lever (286) is being used to rotate said trigger (206) together with said trigger actuating lever (286) in a first direction, said one-way rotation stop (236) does not block relative rotation between said trigger (206) and said trigger actuating lever (286) when said trigger actuating lever (286) is being rotated in a second direction opposite said first direction, such that said trigger actuating lever (286) moves said trigger (206) when rotated in said first direction, but that does not move said trigger (206) when rotated in said second direction. 11. The latch according to claim 9, further comprising: a striker detector (318) pivotally supported within said latch housing (202), said striker detector (318) being provided with a striker detector spring (244) that biases said striker detector (318) into occupying a first position coincident with a position occupied by the striker (308) when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, wherein when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, said striker detector (318) is pushed to a second position by the striker (308). 12. The latch according to claim 11, further comprising: a fourth sensor (320) is provided on said circuit board (230), said fourth sensor (320) at least detecting when said striker detector (318) is in its second position, said fourth sensor (320) generating a signal to said latch control circuit (235) when said striker detector (318) is in its second position to thereby allow said latch control circuit (235) to detect that the striker (308) is properly secured when said pawl (204) is in said second latched position. 13. The latch according to claim 12, further comprising: a one-way trigger actuating lever (286) mounted so as to be rotatable about a common axis with said trigger (206), said trigger actuator lever (286) has a one-way rotation stop (236), said one-way rotation stop (236) is biased into engagement with said trigger (206), said one-way rotation stop (236) blocks relative rotation between said trigger (206) and said trigger actuating lever (286) when said one-way rotation stop (236) is in engagement with said trigger (206) and said trigger actuating lever (286) is being used to rotate said trigger (206) together with said trigger actuating lever (286) in a first direction, said one-way rotation stop (236) does not block relative rotation between said trigger (206) and said trigger actuating lever (286) when said trigger actuating lever (286) is being rotated in a second direction opposite said first direction, such that said trigger actuating lever (286) moves said trigger (206) when rotated in said first direction, but that does not move said trigger (206) when rotated in said second direction. 14. The latch according to claim 5, further comprising: a striker detector (318) pivotally supported within said latch housing (202), said striker detector (318) being provided with a striker detector spring (244) that biases said striker detector (318) into occupying a first position coincident with a position occupied by the striker (308) when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, wherein when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, said striker detector (318) is pushed to a second position by the striker (308). 15. The latch according to claim 14, further comprising: a one-way trigger actuating lever (286) mounted so as to be rotatable about a common axis with said trigger (206), said trigger actuator lever (286) has a one-way rotation stop (236), said one-way rotation stop (236) is biased into engagement with said trigger (206), said one-way rotation stop (236) blocks relative rotation between said trigger (206) and said trigger actuating lever (286) when said one-way rotation stop (236) is in engagement with said trigger (206) and said trigger actuating lever (286) is being used to rotate said trigger (206) together with said trigger actuating lever (286) in a first direction, said one-way rotation stop (236) does not block relative rotation between said trigger (206) and said trigger actuating lever (286) when said trigger actuating lever (286) is being rotated in a second direction opposite said first direction, such that said trigger actuating lever (286) moves said trigger (206) when rotated in said first direction, but that does not move said trigger (206) when rotated in said second direction. 16. The latch according to claim 1, further comprising: a striker detector (318) pivotally supported within said latch housing (202), said striker detector (318) being provided with a striker detector spring (244) that biases said striker detector (318) into occupying a first position coincident with a position occupied by the striker (308) when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, wherein when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, said striker detector (318) is pushed to a second position by the striker (308). 17. The latch according to claim 16, further comprising: a one-way trigger actuating lever (286) mounted so as to be rotatable about a common axis with said trigger (206), said trigger actuator lever (286) has a one-way rotation stop (236), said one-way rotation stop (236) is biased into engagement with said trigger (206), said one-way rotation stop (236) blocks relative rotation between said trigger (206) and said trigger actuating lever (286) when said one-way rotation stop (236) is in engagement with said trigger (206) and said trigger actuating lever (286) is being used to rotate said trigger (206) together with said trigger actuating lever (286) in a first direction, said one-way rotation stop (236) does not block relative rotation between said trigger (206) and said trigger actuating lever (286) when said trigger actuating lever (286) is being rotated in a second direction opposite said first direction, such that said trigger actuating lever (286) moves said trigger (206) when rotated in said first direction, but that does not move said trigger (206) when rotated in said second direction. 18. The latch according to claim 5, wherein said motor (210) has an output shaft (220) and wherein the latch further comprises: a worm gear (214) attached to said output shaft (220) of said motor (210) such that said worm gear (214) rotates with said shaft (220) as a unit; anda combination gear (216) that drives said cam gear (218), said output shaft (220) rotating in response to said motor being energized by supplying a current having a polarity to said motor, wherein reversing the polarity of the current supplied to said motor (210) causes a direction of rotation of said output shaft (220) to be reversed, and wherein rotation of said worm gear (214) causes rotation of said combination gear (216). 19. The latch according to claim 18, further comprising: a one-way trigger actuating lever (286) mounted so as to be rotatable about a common axis with said trigger (206), said trigger actuator lever (286) has a one-way rotation stop (236), said one-way rotation stop (236) is biased into engagement with said trigger (206), said one-way rotation stop (236) blocks relative rotation between said trigger (206) and said trigger actuating lever (286) when said one-way rotation stop (236) is in engagement with said trigger (206) and said trigger actuating lever (286) is being used to rotate said trigger (206) together with said trigger actuating lever (286) in a first direction, said one-way rotation stop (236) does not block relative rotation between said trigger (206) and said trigger actuating lever (286) when said trigger actuating lever (286) is being rotated in a second direction opposite said first direction, such that said trigger actuating lever (286) moves said trigger (206) when rotated in said first direction, but that does not move said trigger (206) when rotated in said second direction. 20. The latch according to claim 7, wherein after said pawl (204) is rotated to its second latched position, when the second sensor (326) detects that said can gear is back in its starting position then current supply to said motor (210) is turned off. 21. The latch according to claim 20, wherein when normal closing of the panel (300) is blocked, after a predetermined time without a signal from said second sensor (326) said latch control circuit (235) reverses the polarity of the current to said motor (210) to disengage said trigger (206) from said pawl (204) to allow the striker (308) to be released and to return the latch (200) to said unlatched configuration. 22. The latch according to claim 12, wherein after said pawl (204) is rotated to its second latched position, when the second sensor (326) detects that said can gear is back in its starting position then current supply to said motor (210) is turned off. 23. The latch according to claim 22, wherein when the striker (308) is properly secured with said pawl (204) being in said second latched position and said cam gear (218) being in its starting position, activation of the latch (200) by a user results in said latch control circuit (235) operating to rotate said cam gear (218) from its starting position in a direction opposite a direction of rotation of said cam gear (218) when said pawl (204) is being moved from said first latched position to said second latched position, to disengage said trigger (206) from said pawl (204) to allow the striker (308) to be released. 24. The latch according to claim 23, wherein when the second sensor (326) senses that said cam gear (218) has returned to its starting position, said second sensor (326) signals said latch control circuit (235) to cease energizing said motor (210). 25. The latch according to claim 12, wherein when said pawl (204) is moved to said second latched position as detected by said third sensor (316), while the striker detector (318) does not indicate that the striker (308) is captured by said pawl (204), said latch control circuit (235) reverses the current to said motor (210), as compared to the current supplied to said motor when said pawl (204) is being moved from said first latched position to said second latched position, to disengage said trigger (206) from said pawl (204) and return the latch (200) to said unlatched configuration. 26. The latch according to claim 24, wherein when said pawl (204) is moved to said second latched position as detected by said third sensor (316), while the striker detector (318) does not indicate that the striker (308) is captured by said pawl (204), said latch control circuit (235) reverses the current to said motor (210), as compared to the current supplied to said motor when said pawl (204) is being moved from said first latched position to said second latched position, to disengage said trigger (206) from said pawl (204) and return the latch (200) to said unlatched configuration. 27. A method of operating a latch (200) adapted for securing a closure member (300) in a predetermined position, the closure member being provided with a striker (308), wherein the latch comprises: a latch housing (202);a pawl (204);a trigger (206); andan electrically operated actuator assembly (208) capable of selectively moving said trigger (206) out of engagement with said pawl (204) and rotating said pawl from a first latched position to a second latched position to move the striker (308) inward relative to said housing (202),wherein said electrically operated actuator assembly (208) comprises:a cam gear (218) including a gear wheel (222), a first cam (203), and a second cam (205), said cam gear (218) being rotationally supported in said housing (202) for rotation about an axis of rotation, said first cam (203) having a cam lobe (207) located at a distance from said axis of rotation of said cam gear (218), said first cam (203) acting to drive said pawl (204) from said first latched position to said second latched position when said cam gear (218) is rotated in a first direction, said second cam (205) being in the form of a raised, arc-shaped, and elongated rib eccentrically positioned relative to said axis of rotation of said cam gear (218), said second cam (205) acting to disengage said trigger from said pawl when said cam gear is rotated in a second direction opposite to said first direction;a circuit board (230);a latch control circuit (235);a motor (210) selectively powering rotation of said cam gear; andat least two sensors (332, 326), including a first sensor (332) and a second sensor (326), mounted on said circuit board (230);wherein said pawl (204) is provided with a pawl slot (258) to capture and hold the striker (308) when said pawl (204) is in either one of a first latched position and a second latched position, wherein with the latch (200) initially in an unlatched configuration, as the closure member (300) is closed, the striker (308) will be positioned and captured in said pawl slot (258) with said pawl (204) being moved to said first latched position,wherein said second sensor (326) at least detects when said cam gear (218) is in its starting position, and wherein said second sensor (326) then generates a signal to said latch control circuit (235) when said cam gear (218) is in its starting position;the method comprising the steps of:detecting when said pawl (204) reaches said first latched position using said first sensor (332), whereupon said first sensor (332) generates a signal to said latch control circuit (235);supplying current with a first polarity to said motor (210) to cause rotation of said cam gear (218) in a first direction to move said pawl (204) to said second latched position; andceasing the supply of current to said motor (210) when said second sensor (326) detects that said cam gear (218) is in its starting position. 28. The method according to claim 27, further comprising the step of reversing the polarity of the current from the first polarity to a second polarity to reverse the direction of rotation of the cam gear (218) after a predetermined period of time has passed without detecting that the cam gear (218) has reached its starting position. 29. The method according to claim 27, further comprising the steps of: detecting that a user has acted to activate the latch (200); andsupplying current with a second polarity opposite the first polarity to a second polarity to rotate the cam gear (218) in a second direction opposite said first direction to thereby release the striker (308); andceasing the supply of current to said motor (210) when said second sensor (326) detects that said cam gear (218) is in its starting position. 30. The method according to claim 27, wherein the latch further comprises: a third sensor (316) provided on said circuit board (230), wherein said third sensor (316) is used to detect when said pawl (204) reaches said second latched position, whereupon said third sensor (316) generates a signal to said latch control circuit (235) to thereby allow said latch control circuit (235) to detect when said pawl (204) is in said second latched position;a striker detector (318) pivotally supported within said latch housing (202), said striker detector (318) being provided with a striker detector spring (244) that biases said striker detector (318) into occupying a first position coincident with a position occupied by the striker (308) when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, wherein when the striker (308) is captured by said pawl (204) and said pawl (204) is in said second latched position, said striker detector (318) is pushed to a second position by the striker (308); anda fourth sensor (320) is provided on said circuit board (230), said fourth sensor (320) at least detecting when said striker detector (318) is in its second position, said fourth sensor (320) generating a signal to said latch control circuit (235) when said striker detector (318) is in its second position to thereby allow said latch control circuit (235) to detect that the striker (308) is properly secured when said pawl (204) is in said second latched position;the method further comprising the steps of:detecting whether or not said pawl (204) has reached said second latched position using said third sensor (316);detecting whether or not the striker (308) is properly secured using said fourth sensor (320); andsupplying current with a second polarity opposite the first polarity to a second polarity to rotate the cam gear (218) in a second direction opposite said first direction to thereby return the latch (200) to the unlatched configuration if it is detected that said pawl (204) has reached said second latched position and that the striker (308) is not properly secured.

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구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

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특허 상세정보

Electromechanical compression latch

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청구항
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이 특허에 인용된 특허 (130)

이 특허를 인용한 특허 피인용횟수: 4

IPC 상위 출원인

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상세정보조회

원문조회

IPC 상세정보(version : 201201)

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특허 상세정보

Electromechanical compression latch

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (130)

이 특허를 인용한 특허 피인용횟수: 4

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

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