[특허]Belt lock with a state sensor for detection of the locking state of a safety belt system

POLYCONTACT AG

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특허 상세정보

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Belt lock with a state sensor for detection of the locking state of a safety belt system

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60R-022/00 B60R-022/48
출원번호	US-0487712 (2012-06-04)
등록번호	US-9555769 (2017-01-31)
우선권정보	CH-0944/11 (2011-06-03)
발명자 / 주소	Lanter, Josua
출원인 / 주소	POLYCONTACT AG
대리인 / 주소	Buchanan Ingersoll & Rooney PC
인용정보	피인용 횟수 : 0 인용 특허 : 12

초록
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A belt lock is provided with a state sensor for detection of the locking state of a safety belt system, for example in an motor vehicle. The belt lock includes a locking mechanism which is located in a belt lock housing, which is formed from an upper shell and a lower shell, for an inserted belt tongue which has a component which changes its location from a first end position into a second end position when the locking mechanism is actuated. Actuation of the locking mechanism can be monitored by the state sensor. The state sensor is made as an electronic...

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1. A belt lock comprising: a state sensor for detection of a locking state of a safety belt system,a belt lock housing having an upper shell and a lower shell; anda locking mechanism which is located in the belt lock housing for insertion of a belt tongue which has a component which changes its location from a first end position into a second end position when the locking mechanism is actuated,wherein the state sensor is configured to monitor actuation of the locking mechanism by monitoring the position of the component of the belt tongue, andwherein the state sensor includes an electronic sensor element which is located in the lower shell. 2. The belt lock as claimed in claim 1, wherein the electronic sensor element located in the lower shell is connected via two conductors to a higher-order electrical system. 3. The belt lock as claimed in claim 1, wherein the electronic sensor element which is located in the lower shell is a Hall sensor, and wherein the monitored component contains a magnet. 4. The belt lock as claimed in claim 3, wherein the monitored component is a locking body for the belt tongue which has been inserted into the belt lock housing. 5. The belt lock as claimed in claim 3, wherein the monitored component is an ejector. 6. The belt lock as claimed in claim 1, wherein the electronic sensor element which is located in the lower shell includes a coil whose inductance is configured to be changed based on a change in the position of the monitored component. 7. The belt lock as claimed in claim 6, wherein the monitored component is a locking body which is metallic at least in areas for the belt tongue which has been inserted into the belt lock housing. 8. The belt lock as claimed in claim 6, wherein at least one of the locking body and a metallic extension which projects away from the locking body in one of its end positions is configured to dip in part axially into the interior of the coil, wherein the one of the end positions includes one of the first end position and the second end position. 9. The belt lock as claimed in claim 6, wherein the coil is a component of an oscillator circuit. 10. The belt lock as claimed in claim 9, comprising: an evaluation element connected to the oscillator circuit, wherein the evaluation element is configured to, when a definable oscillation frequency change is exceeded, generate a signal which indicates a presence of a state change of the component which can be changed with respect to its position. 11. The belt lock as claimed in claim 1, wherein the electronic sensor element which is located in the lower shell is a photoelectric barrier. 12. The belt lock as claimed in claim 11, wherein the photoelectric barrier includes a light source to illuminate an insertion slot into the belt lock housing. 13. The belt lock as claimed in claim 11, wherein the monitored component is a locking body for the belt tongue which has been inserted into the belt lock housing. 14. The belt lock as claimed in claim 13, wherein one section of the locking body or an extension which projects from the locking body in one of its end positions is configured to project into the light path of the photoelectric barrier. 15. The belt lock as claimed in claim 14, wherein the photoelectric barrier is a reflection photoelectric barrier, and wherein the section of the locking body or of the extension projecting from the locking body projecting into the light path is made as a reflector for injected light. 16. The belt lock according to claim 1, wherein the state sensor is configured to generate an optical and/or acoustic warning signal. 17. The belt lock according to claim 16, wherein the generated warning signal is output for the activation or deactivation of mechanisms for inflating airbags for the passengers of a motor vehicle. 18. The belt lock as claimed in claim 1, wherein the safety belt system is comprised in a motor vehicle. 19. The belt lock as claimed in claim 2, wherein the electronic sensor element which is located in the lower shell is a Hall sensor, and wherein the monitored component contains a magnet. 20. The belt lock as claimed in claim 19, wherein the monitored component is a locking body for the belt tongue which has been inserted into the belt lock housing. 21. The belt lock as claimed in claim 19, wherein the monitored component is an ejector. 22. The belt lock as claimed in claim 8, wherein at least one of the locking body and the metallic extension which projects away from the locking body in the locking position is configured to dip in part axially into the interior of the coil. 23. The belt lock as claimed in claim 2, wherein the electronic sensor element which is located in the lower shell includes a coil whose inductance is configured to be changed based on a change in the position of the monitored component. 24. The belt lock as claimed in claim 23, wherein the monitored component is a locking body which is metallic at least in areas for the belt tongue which has been inserted into the belt lock housing. 25. The belt lock as claimed in claim 23, wherein at least one of the locking body and a metallic extension which projects away from the locking body in one of its end positions, for example in the locking position, is configured to dip in part axially into the interior of the coil. 26. The belt lock as claimed in claim 24, wherein the coil is a component of an oscillator circuit. 27. The belt lock as claimed in claim 26, comprising: an evaluation element connected to the oscillator circuit, wherein the evaluation element is configured to, when a definable oscillation frequency change is exceeded, generate a signal which indicates a presence of a state change of the component which can be changed with respect to its position. 28. The belt lock as claimed in claim 25, wherein the coil is a component of an oscillator circuit. 29. The belt lock as claimed in claim 28, comprising: an evaluation element connected to the oscillator circuit, wherein the evaluation element is configured to, when a definable oscillation frequency change is exceeded, generate a signal which indicates a presence of a state change of the component which can be changed with respect to its position. 30. The belt lock as claimed in claim 12, wherein the light source includes an LED. 31. The belt lock as claimed in claim 2, wherein the electronic sensor element which is located in the lower shell is a photoelectric barrier. 32. The belt lock as claimed in claim 31, wherein the photoelectric barrier includes a light source to illuminate an insertion slot into the belt lock housing. 33. The belt lock as claimed in claim 32, wherein the monitored component is a locking body for the belt tongue which has been inserted into the belt lock housing. 34. The belt lock as claimed in claim 33, wherein one section of the locking body or an extension which projects from the locking body in one of its end positions is configured to project into the light path of the photoelectric barrier. 35. The belt lock as claimed in claim 34, wherein the photoelectric barrier is a reflection photoelectric barrier, and wherein the section of the locking body or of the extension projecting from the locking body projecting into the light path is made as a reflector for injected light. 36. The belt lock as claimed in claim 1, wherein: the housing includes an insertion slot into which the belt tongue is configured to be inserted in a first direction;wherein the locking mechanism includes a locking body configured to be moved in a second direction to actuate the locking mechanism when the component of the belt tongue is moved in the first direction to the second end position, the first direction being substantially perpendicular to the second direction; andwherein the electronic sensor element is attached to the lower shell below the locking body. 37. The belt lock as claimed in claim 36, wherein the lower shell is located below the insertion slot, and the upper shell is located above the insertion slot.

이 특허에 인용된 특허 (12)

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Belt lock with a state sensor for detection of the locking state of a safety belt system

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Belt lock with a state sensor for detection of the locking state of a safety belt system

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