US7364020B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring device for an electromechanical brake
Assignee: Aumovio Germany GmbH
•
Filing: 2004-10-19
•
Granted: 2008-04-29
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Expires: 2024-10-19
Abstract
Abstract A force sensor for an electromechanical brake has a closed ring having a C-shaped profile that is open inwardly. Force is introduced along the inner circumference of the ring.
Inventors
- 👤 Johannes Ante
- 👤 Stephan Heinrich
- 👤 Andreas Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:58
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/22; G01L5/225; B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/221; F; F16; F16D; F16D65/00; F16D65/14; F16D65/16; F16D65/18; G01L1/00; G01L1/20; G01L1/22; G01L1/2206; G01L1/2231; F16D66/00; F16D2066/005; F16D2121/00; F16D2121/18; F16D2121/24; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/34; F16D2125/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
187 words
A measuring device for an electromechanical brake (EMB) in a motor vehicle, wherein the brake comprises a brake shoe and a caliper, and an actuating element for introducing a force between the brake shoe and the caliper, the measuring device comprising: a force sensor ( 42 ) in the form of a closed ring which has in cross section a C-shaped profile with two parallel limbs ( 48 , 50 ) arranged spaced apart from one another; regions for introducing said force of the actuator into the ring, the regions being between the actuating element ( 18 ) for the brake shoe ( 14 ) and the caliper ( 16 ) of the brake, wherein the regions are situated at the free end of the limbs ( 48 , 50 ) on the outside thereof; and a strain gauge ( 62 ) that is arranged on the outside of the ring next to one of the force-introduction regions of the limbs ( 48 , 50 ), wherein the strain gauge ( 62 ) is arranged on one of the limbs along the circumference of the force sensor.
Claim 2
Dependent Claim
187 words
A measuring device for an electromechanical brake (EMB) in a motor vehicle, wherein the brake comprises a brake shoe and a caliper, and an actuating element for introducing a force between the brake shoe and the caliper, the measuring device comprising: a force sensor ( 42 ) in the form of a closed ring which has in cross section a C-shaped profile with two parallel limbs ( 48 , 50 ) arranged spaced apart from one another; regions for introducing said force of the actuator into the ring, the regions being between the actuating element ( 18 ) for the brake shoe ( 14 ) and the caliper ( 16 ) of the brake, wherein the regions are situated at the free end of the limbs ( 48 , 50 ) on the outside thereof; and a strain gauge ( 62 ) that is arranged on the outside of the ring next to one of the force-introduction regions of the limbs ( 48 , 50 ), wherein the strain gauge ( 62 ) is arranged on one of the limbs along the circumference of the force sensor.
Claim 3
Dependent Claim
24 words
The measuring device as claimed in claim 1 , wherein the limbs ( 48 , 50 ) point toward the center of the ring.
Claim 4
Dependent Claim
41 words
The measuring device as claimed in claim 1 , wherein the transition from the base ( 52 ) of the C profile to the limbs ( 48 , 50 ) is rounded, with a radius of curvature of approximately 1.5 mm.
Claim 5
Dependent Claim
31 words
The measuring device as claimed in claim 1 , wherein the regions for introducing the force are disposed annularly along the free ends of the limbs ( 48 , 50 ).
Claim 6
Dependent Claim
26 words
The measuring device as claimed in claim 1 , wherein the strain gauge is disposed on the outside of said limb, which points toward the caliper.
Claim 7
Dependent Claim
18 words
The measuring device as claimed in claim 1 , wherein different signals of the strain gauge are averaged.
Claim 8
Dependent Claim
29 words
The measuring device as claimed in claim 1 , wherein the strain gauge ( 62 ) has strain resistors that are arranged in the radial direction of the ring.
Claim 9
Dependent Claim
20 words
The measuring device as claimed in claim 1 , wherein the strain gauge ( 62 ) comprises silicon strain gauges.
Claim 10
Dependent Claim
20 words
The measuring device as claimed in claim 8 , wherein the force sensor is produced from a precipitation hardenable steel.
Claim 11
Dependent Claim
21 words
The measuring device as claimed in claim 9 , wherein the precipitation hardenable steel is of type 17-4PH or INCONEL 718.
Claim 12
Dependent Claim
27 words
The measuring device as claimed in claim 8 , wherein the silicon strain gauges are connected to the force sensor by means of lead borate glass solder.
Claim 13
Dependent Claim
33 words
The measuring device as claimed in claim 11 , wherein there is provided on the caliper ( 16 ) a circumferential projection ( 44 ) via which force is introduced into the ring.
Claim 14
Dependent Claim
65 words
The measuring device as claimed in claim 12 , wherein said brake shoe is a first brake shoe, said measuring device further comprises a second brake shoe, and there is provided on the actuating element ( 22 , 24 ) for one of the brake shoes ( 12 , 14 ) a circumferential projection ( 26 ) via which force is introduced into the ring.
Claim 15
Dependent Claim
25 words
The measuring device as claimed in claim 12 , wherein the projection ( 44 ) for introducing force is designed with a spherical bearing surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2011-04-29 | 2011-10-29 | 2012-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2015-04-29 | 2015-10-29 | 2016-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2019-04-29 | 2019-10-29 | 2020-04-29 | $7700.00 | Window Closed / Lapsed |