IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0943037
(2004-09-17)
|
우선권정보 |
EP-02100271(2002-03-18) |
발명자
/ 주소 |
- Loher,Urs
- Sawh,Chandradeo
- Tellenbach,Jean Maurice
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
8 |
초록
▼
An exemplary mounting arrangement serves for the mounting of a force transducer that has a sensor-equipped core part connecting a support part to a force-application part. The support part can be bolted to a fastening part by mounting screws, and the force-application part can be bolted to a weighin
An exemplary mounting arrangement serves for the mounting of a force transducer that has a sensor-equipped core part connecting a support part to a force-application part. The support part can be bolted to a fastening part by mounting screws, and the force-application part can be bolted to a weighing pan carrier by means of mounting screws. The support part and the force-application part of the force transducer can each have a triplet of threaded holes serving to receive the mounting screws. Each triplet forms an isosceles triangle whose apex points towards the deformable body. The symmetry axes of the triangles lie in a plane that is parallel to the displacement travel of the force transducer. The mounting arrangement can be further configured to provide an effective overload protection in a low-profile design and to provide a thermally uncoupled fixation.
대표청구항
▼
The invention claimed is: 1. A mounting arrangement for a force transducer comprising: a force transducer comprising a force-application part, a support and a core part; a load-receiving part connected to the force-application part through a first attachment surface; a fastening part connected to t
The invention claimed is: 1. A mounting arrangement for a force transducer comprising: a force transducer comprising a force-application part, a support and a core part; a load-receiving part connected to the force-application part through a first attachment surface; a fastening part connected to the support part through a second attachment surface, the fastening part having a U-shaped cross-section with an open side of its U-profile facing towards the force transducer, the fastening part extending from the second attachment surface towards the force-application part over a middle of the core part; and means on the fastening part for fixation of the fastening part. 2. The mounting arrangement for a force transducer of claim 1, wherein the core part which lies between the force-application part and the support part, decoupled by grooves from the force-application part and the support part, and equipped with at least one sensor, wherein at least the support part has three threaded holes running in a direction of a force application and serving to receive mounting screws, and wherein in a plane that intersects the holes orthogonally, centers of the threaded holes form an isosceles triangle whose apex points towards the core part. 3. The mounting arrangement for a force transducer according to claim 2, wherein distances between the three threaded holes are at least approximately equal. 4. The mounting arrangement for a force transducer according to claim 2, wherein a distance between the centers of the threaded holes forming a baseline of the isosceles triangle is approximately twice as long as a distance of the centers of the threaded holes from a border of an attachment surface of the threaded holes. 5. The mounting arrangement for a force transducer according to claim 2, wherein the core part comprises: a deformable body configured as a parallelogram-shaped measuring element that guides the force-application part in a parallel translatory motion relative to the support part, wherein the at least one sensor is a strain gauge installed in a deformation zone of the deformable body. 6. The mounting arrangement for a force transducer according to claim 2, comprising: a circuit module mechanically and thermally coupled to the force transducer, wherein the circuit module includes a memory module as well as at least one converter circuit for conversion of analog signals produced by the sensor of the force transducer. 7. The mounting arrangement for a force transducer according to claim 2, wherein the support part and the force-application part each have three threaded holes running in the direction of the force application and serving to receive mounting screws, and wherein in a plane that intersects the holes orthogonally, centers of the threaded holes form isosceles triangles whose apices point towards the core part and whose symmetry axes are substantially parallel to each other and coplanar with the direction of the force application. 8. The mounting arrangement according to claim 1, wherein the means for fixation have a relatively low thermal conductivity. 9. The mounting arrangement according to claim 1, wherein the fastening part has wing portions configured as lengthwise lateral ledges that are gripped by the means for fixation of the fastening part. 10. The mounting arrangement according to claim 1, wherein the load-receiving part has a U-shaped cross-section with an open side of its U-profile facing towards the force transducer, the load-receiving part extending from the first attachment surface of the force transducer towards the support part into an area of the fastening part, and wherein the load-receiving part contains at least one device that cooperates with the fastening part to form an end stop for a displacement travel of the load-receiving part relative to the fastening part. 11. The mounting arrangement according to claim 10, wherein the load-receiving part has lateral parts configured as lengthwise lateral ledges, wherein at least one of the lateral parts has a hole through which a bolt that is connected to the fastening part passes with clearance, and wherein the bolt is provided with a first and/or second threaded nut that is adjustable in such a manner that a displacement travel of the force-application part of the force transducer is limited in a downward direction by the first nut and/or in an upward direction by the second nut. 12. The mounting arrangement according to claim 11, wherein the load-receiving part has lateral parts on each side, at the same distance, each with a hole through which a bolt that is connected to the fastening part passes with clearance, and wherein each of the bolts is provided with two threaded nuts that are adjustable in such a manner that the two lateral parts are in a downward direction stopped simultaneously by one nut on each side and in an upward direction simultaneously by the other nut on each side. 13. The mounting arrangement according to claim 12, wherein a line of action of forces acting on the load-application part and axes of the bolts run in a plane that is orthogonal to a longitudinal direction of the force transducer. 14. A scale with a mounting arrangement according to claim 12. 15. A weighing scale with a force transducer mounting arrangement according to claim 1, wherein the force application part is attached to a load receiving part configured as a weighing pan carrier, and the support part is attached with a fastening part used to fasten the force transducer to the weighing scale. 16. Force transducer The mounting arrangement for a force transducer according to claim 7, wherein distances between the three threaded holes are at least approximately equal. 17. The mounting arrangement for a force transducer according to claim 16, wherein a distance between the centers of the threaded holes forming a baseline of the isosceles triangle is approximately twice as long as a distance of the centers of the threaded holes from a border of an attachment surface of the threaded holes. 18. The mounting arrangement for a force transducer according to claim 17, wherein the core part comprises: a deformable body configured as a parallelogram-shaped measuring element that guides the force-application part in a parallel translatory motion relative to the support part, wherein the at least one sensor is a strain gauge installed in a deformation zone of the deformable body. 19. The mounting arrangement for a force transducer according to claim 18, comprising: a circuit module mechanically and thermally coupled to the force transducer, wherein the circuit module includes a memory module as well as at least one converter circuit for conversion of analog signals produced by the sensor of the force transducer.
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