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Drum brake having a load measurement device

Continental Teves AG & Co., OHG
2024
Online Patent

Titel:
Drum brake having a load measurement device
Autor/in / Beteiligte Person: Continental Teves AG & Co., OHG
Link:
Veröffentlichung: 2024
Medientyp: Patent
Sonstiges:
  • Nachgewiesen in: USPTO Patent Grants
  • Sprachen: English
  • Patent Number: 12000,446
  • Publication Date: June 04, 2024
  • Appl. No: 17/612422
  • Application Filed: May 20, 2020
  • Assignees: CONTINENTAL TEVES AG & CO. OHG (Frankfurt am Main, DE)
  • Claim: 1. A drum brake comprising: a brake drum; two brake shoes, which can be applied to the brake drum, are secured on the brake shoe side of a carrier plate and each have a pressure end and an abutment end; a spreader device situated between the pressure ends; an abutment having a cylinder in which two pistons are guided, on the outer end faces of which the abutment ends of the brake shoes rest and the inner end faces of which are each supported by a spring on a step in the cylinder; a load measurement device situated between the abutment ends wherein, the load measurement device determines the load prevailing at the abutment; and a hollow peg which projects from the outside of the cylinder and penetrates an opening in the carrier plate, such that it can be received in a receiving space located in one of a steering knuckle resting against the carrier plate and in a reinforcement element fixed on the steering knuckle.
  • Claim: 2. The drum brake as claimed in claim 1 , wherein the cylinder has lateral lugs for receiving one of screws and rivets, wherein the one of screws and rivets penetrate the carrier plate to be fixed to the steering knuckle resting against the carrier plate.
  • Claim: 3. The drum brake as claimed in claim 1 , further comprising sensors in the peg and elements in the pistons, wherein the elements are sensed by the sensors.
  • Claim: 4. The drum brake as claimed in claim 3 , wherein the sensors are accommodated in a sensor housing, which is inserted with an accurate fit into the hollow peg ensuring that the sensors are opposite the elements that can be sensed.
  • Claim: 5. The drum brake as claimed in claim 1 , wherein the springs are one of disk springs and spiral disk springs.
  • Claim: 6. The drum brake as claimed in claim 1 , wherein the springs are sleeve springs.
  • Claim: 7. The drum brake as claimed in claim 1 , wherein the pins project laterally from the pistons, the ends of which pins point toward the peg and which pins carry the elements that can be sensed.
  • Claim: 8. The drum brake as claimed in claim 7 , wherein the pins run in a longitudinal slot in an inner step in the cylinder.
  • Claim: 9. The drum brake as claimed in claim 8 , wherein the sensors are accommodated in a sensor housing, which is inserted with an accurate fit into the hollow peg, thus ensuring that the sensors are opposite the elements that can be sensed.
  • Claim: 10. The drum brake as claimed in claim 8 , wherein the the sensors are AMR sensors, and the elements that can be sensed are magnets.
  • Claim: 11. The drum brake as claimed in claim 8 , wherein the sensors are accommodated in a sensor housing, which is inserted with a correct orientation into the hollow peg, thus ensuring that the sensors are opposite the elements that can be sensed.
  • Claim: 12. The drum brake as claimed in claim 11 , wherein there is coding on the sensor housing to ensure the correct orientation.
  • Claim: 13. The drum brake as claimed in claim 1 , wherein the elements that can be sensed are mounted in or on the lateral surface of the pistons.
  • Patent References Cited: 3349875 October 1967 Stelzer ; 4266640 May 1981 Woo ; 4615419 October 1986 Gaiser ; 5960912 October 1999 Nishizawa ; 6705439 March 2004 Wang ; 8235189 August 2012 Maehara ; 11346417 May 2022 Jo ; 11788589 October 2023 Jo ; 20070151818 July 2007 Linhoff ; 20070261928 November 2007 Charmat ; 20130068576 March 2013 Ko ; 20200191218 June 2020 von Hayn et al. ; 20210190159 June 2021 Bach et al. ; 20210396281 December 2021 Jo ; 86108224 July 1987 ; 105102841 November 2015 ; 106460978 February 2017 ; 102017217410 April 2019 ; 102018202261 April 2019 ; 0005675 November 1979 ; 0523338 January 1993 ; 2014948 January 2009 ; 2104392 April 1972 ; 1328785 September 1973 ; 2088978 June 1982 ; S6421825 January 1989 ; H09329168 December 1997 ; 2002505733 February 2002 ; 2010144905 July 2010 ; 20070062159 June 2007 ; 20080004808 January 2008 ; 20090057640 June 2009 ; 20130029951 March 2013 ; 99/53214 October 1999 ; 2019063278 April 2019 ; 2019072768 April 2019
  • Other References: Chinese First Office Action dated Feb. 7, 2023 for the counterpart Chinese Patent Application No. 202080038526.2 and DeepL Translation. cited by applicant ; Chinese Notice of Allowance dated Mar. 13, 2023 for the counterpart Chinese Patent Application No. 202080038526.2 and DeepL Translation. cited by applicant ; Korean Notice of Submission of Opinions dated Mar. 14, 2023 for the counterpart Korean Patent Application No. 10-2021-7035760 and Global Dossier Translation. cited by applicant ; Ning Ma, “Optimum Design of Gap Adjustment Device for Drum Brake”, 2016, China Academic Journal Electronic Publishing House and DeepL Translation. cited by applicant ; Notice of Reasons for Refusal dated Nov. 17, 2022 for the counterpart Japanese Patent Application No. 2021-564846. cited by applicant ; Korean Written Decision on Registration dated Sep. 7, 2023 for the counterpart Korean Patent Application No. 10-2021-7035760 and Global Dossier Translation. cited by applicant ; International Search Report and Written Opinion dated Aug. 28, 2020 from corresponding International Patent Application No. PCT/EP2020/064113. cited by applicant
  • Primary Examiner: Irvin, Thomas W

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