IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0034777
(2008-02-21)
|
등록번호 |
US-7842894
(2011-01-31)
|
우선권정보 |
DE-10 2005 041 029(2005-08-23) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
A seat belt buckle for seat belts has a housing, an opening for inserting a seat belt tongue, a locking device for locking the seat belt tongue, and a release device for releasing the seat belt tongue from the lock. A sensor device electrically senses whether the seat belt tongue is locked, wherein
A seat belt buckle for seat belts has a housing, an opening for inserting a seat belt tongue, a locking device for locking the seat belt tongue, and a release device for releasing the seat belt tongue from the lock. A sensor device electrically senses whether the seat belt tongue is locked, wherein the sensor device has a switch arrangement which can be activated by the seat belt tongue. The switch arrangement has an electrically conductive snap-action plate that can be moved between a first switched position and a second switched position. A mechanical activation device transmits a force exerted on the seat belt tongue during the insertion of the seat belt tongue onto the snap-action plate in order to move the snap-action plate from the first switched position into the second switched position. As a result, an electrical contact element is closed or opened.
대표청구항
▼
What is claimed is: 1. A seat belt buckle for seat belts, the seat belt buckle comprising a housing, an opening for inserting a seat belt tongue, a locking device for locking the seat belt tongue, a release device for releasing the seat belt tongue from the locking device, and a sensor device for e
What is claimed is: 1. A seat belt buckle for seat belts, the seat belt buckle comprising a housing, an opening for inserting a seat belt tongue, a locking device for locking the seat belt tongue, a release device for releasing the seat belt tongue from the locking device, and a sensor device for electrically sensing whether the seat belt tongue is locked, wherein the sensor device has a switch arrangement activated by the seat belt tongue, the switch arrangement comprising: an electrically conductive snap-action plate that moves between a first switched position and a second switched position in response to a force applied to an upper side of the snap-action plate, the snap-action plate having a first contact section that is in contact with a first electrical contact element in both the first and second switched positions, a second contact section that is spaced apart from a second electrical contact element in the first switched position and that is in contact with the second electrical contact element in the second switched position, and a third contact section that is in contact with a third electrical contact element in the first switched position and that is spaced apart from the third electrical contact element in the second switched position; and a mechanical activation device that transmits a force exerted on the seat belt tongue during insertion of the seat belt tongue onto an upper side of the snap-action plate in order to move the snap-action plate from the first switched position into the second switched position. 2. The seat belt buckle according to claim 1, wherein the snap-action plate has a central section and a plurality of legs that extend from the central section, wherein one of the plurality of legs forms the first contact section, and wherein the central section forms the second contact section. 3. The seat belt buckle according to claim 2, wherein at least one of the plurality of legs has an extension section that forms the third contact section. 4. The seat belt buckle according to claim 1, wherein the mechanical activation device has a pressure plate that is mounted on the housing so as to be movable in a direction that transmits force to the upper side of the snap-action plate. 5. The seat belt buckle according to claim 4, wherein the pressure plate is movable between the snap-action plate and an activation element that transmits the force exerted on the seat belt tongue to the upper side of the snap-action plate. 6. The seat belt buckle according to claim 1, wherein the mechanical activation device has a pressure element that bears directly against the snap-action plate and is manufactured from an elastically deformable material. 7. The seat belt buckle according to claim 6, wherein the mechanical activation device has a pressure plate that is mounted on the housing so as to be movable in a direction that transmits force to the upper side of the snap-action plate, and wherein the pressure element is secured to the pressure plate. 8. The seat belt buckle according to claim 1, wherein the mechanical activation device has an activation element in the form of an eccentric that rotates about a rotational axis by means of the force exerted on the seat belt tongue and has an eccentric section that acts on the snap-action plate. 9. The seat belt buckle according to claim 1, wherein the mechanical activation device has a rotational shaft that is mounted on the housing so as to be rotatable about a rotational axis and is connected to a lever that extends into the opening for inserting the seat belt tongue. 10. The seat belt buckle according to claim 1, wherein the mechanical activation device has a rotational shaft that is mounted on the housing so as to be rotatable about a rotational axis and is connected to an elastic restoring device that elastically prestresses the rotational shaft into the first switched position. 11. The seat belt buckle according to claim 10, wherein the elastic restoring device comprises a spring that is mounted on the outside of a housing section and acts on a section of the rotational shaft that protrudes from the housing. 12. The seat belt buckle according to claim 1, wherein the sensor device has an electric conductor arrangement that is mounted on a housing section and includes at least the first electrical contact element and the second electrical contact element. 13. The seat belt buckle according to claim 12, wherein the conductor arrangement is a punched grating that is encapsulated with plastic by injection molding. 14. A method for sensing whether a seat belt tongue is in a locked position within a seat belt buckle, comprising: transmitting a force via a mechanical activation device within a seat belt buckle housing by a seat belt tongue in a locked position within the seat belt housing to an upper surface of a snap-action plate, thereby moving the snap-action plate from a first switched position to a second switched position; and contacting a first electrical contact element of the seat belt buckle housing by a first contact section of the snap-action plate in both the first and second switched positions; contacting a second electrical contact element of the seat belt buckle housing by a second contact section of the snap-action plate, the second contact section spaced apart from the second electrical contact element in the first position; and contacting a third electrical contact element of the seat belt buckle housing by a third contact section of the snap-action plate in the first switched position, the third contact section spaced apart from the third electrical contact element in the second switched position. 15. The method of claim 14, wherein the transmitting comprises rotating the mechanical activation device about a rotational shaft mounted on the seat belt buckle housing and connected to a lever that extends into an opening of the seat belt buckle housing that receives the seat belt tongue. 16. The method of claim 14, wherein the transmitting comprises rotating the mechanical activation device about a rotational shaft mounted on the seat belt buckle housing and connected to an elastic restoring device that elastically prestresses the rotational shaft into the first switched position. 17. A method of manufacturing a seat belt buckle, comprising: disposing a snap-action plate having a first switched position and a second switched position within a seat belt buckle housing such that a first contact section of the snap-action plate is in contact with a first electrical contact element in both the first and the second switched positions, a second contact section of the snap-action plate is spaced apart from a second electrical contact element in the first position and is in contact with the second electrical contact element in the second switched position, and a third contact section of the snap-action plate is in contact with a third electrical contact element in the first switched position and is spaced apart from the third electrical contact element in the second switched position; and disposing a mechanical activation device within the seat belt buckle housing such that the mechanical activation device transmits a force exerted by a seat belt tongue in a locked position within the seat belt buckle to an upper surface of the snap-action plate, thereby moving the snap-action plate from the first switched position to the second switched position.
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