Force-transmitting device
View Patent ↗In a force-transmitting device of a force-measuring cell with a parallel-guiding mechanism in which a stationary parallelogram leg and a movably guided parallelogram leg are connected to each other by parallelogram guides, at least one of the parallelogram legs has a fastening part with at least two fastening portions. Each fastening portion has a fastening pad with a tapped hole normal to the fastening pad surface, for fastening the device to a housing or a load carrier. The parallelogram leg has slot-shaped incisions that serve to uncouple the fastening portions from the rest of the parallelogram leg, so as to prevent the propagation of assembly stresses from the fastening portions into the working parts of the force-measuring cell.
1. A force-transmitting device in a force-measuring cell, comprising:
a parallel-guiding mechanism, comprising a movably-guided parallelogram leg and a stationary parallelogram leg with top and bottom faces, an end face and a pair of opposing side faces, the respective parallelogram legs being connected to each other by parallelogram guides;
at least one of the parallelogram legs further comprising a fastening part with at least two fastening portions arranged on at least one of the top and bottom faces thereof, each fastening portion comprising a fastening pad surface with a fastener-receiving hole tapped therein; and
a first slot-shaped incision associated with each fastening portion, each first slot-shaped incision penetrating in a straight line only partially through one of the side faces and the face on which the fastening portion is arranged, each fastening portion being located between the end face and the associated first slot-shaped incision.
2. The force-transmitting device of claim 1 , wherein:
each fastening pad surface is raised relative to the face on which it is arranged.
3. The force-transmitting device of claim 1 , wherein:
the fastening portions and the first slot-shaped incisions are mirror-symmetric relative to a plane that is orthogonal to and bisects the end face of the stationary parallelogram leg.
4. The force-transmitting device of claim 3 , wherein:
the fastening portions and the first slot-shaped incisions are arranged in pairs.
5. The force-transmitting device according to claim 1 , wherein:
the fastening pad surfaces are configured in a rectangular shape.
6. The force-transmitting device according to claim 1 , wherein:
each fastening pad surface is configured with point symmetry relative to a center of the hole.
7. The force-transmitting device of claim 1 , further comprising:
a second slot-shaped incision associated with each fastening pad surface, each second slot-shaped incision extending in an incision plane parallel to the associated fastening pad surface.
8. The force-transmitting device of claim 7 , wherein:
each fastening pad surface is raised relative to the face on which it is arranged.
9. The force-transmitting device of claim 7 , wherein:
the fastening portions and the first slot-shaped incisions are mirror-symmetric relative to a plane that is orthogonal to and bisects the end face of the stationary parallelogram leg.
10. The force-transmitting device of claim 7 , wherein:
the fastening portions and the first slot-shaped incisions are arranged in pairs.
11. The force-transmitting device of claim 7 , further comprising:
a third slot-shaped incision associated with each fastening portion, each third slot-shaped incision extending between a pair of fastening pads, parallel to one of the first slot-shaped incisions.
12. The force-transmitting device according to claim 7 , wherein:
the fastening pad surfaces are configured in a rectangular shape.
13. The force-transmitting device according to claim 7 , wherein:
each fastening pad surface is configured with point symmetry relative to a center of the hole.
14. The force-transmitting device according to claim 1 , wherein:
the parallel-guiding mechanism is formed of an integral block of material.
15. The force-transmitting device according to claim 1 , wherein:
the force-transmitting device is formed of an integral block of material.
16. The force transmitting device of claim 1 , wherein:
the first slot-shaped incisions leave a web portion between the fastening portions and a remainder of the parallelogram leg, so that at least a portion of each of the orthogonal dimensions of the parallelogram leg is intact.
17. The force-transmitting device of claim 7 , wherein:
the fastening part has a height between the fastening portions arranged on each of the top and bottom faces thereof, the fastening part height being different than a height between the top and bottom faces of the force-transmitting device.