IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0172247
(2005-06-30)
|
등록번호 |
US-7445093
(2008-11-04)
|
우선권정보 |
SE-0401704(2004-07-01) |
발명자
/ 주소 |
- Kaell,Patrik
- Stensson,Goeran
- Gripemark,Joakim
|
출원인 / 주소 |
|
대리인 / 주소 |
St. Onge Steward Johnston & Reens LLC
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
3 |
초록
▼
The present invention refers to a disc brake and to disc brake stabilizing elements to be used in such disc brakes. The disc brake comprises a caliper receiving one or more brake pads and encircling one or more brake discs, of which at least one brake disc is received slideably on a hub or a part co
The present invention refers to a disc brake and to disc brake stabilizing elements to be used in such disc brakes. The disc brake comprises a caliper receiving one or more brake pads and encircling one or more brake discs, of which at least one brake disc is received slideably on a hub or a part connected to the hub, by means of splines or teeth, wherein two or more disc stabilizing elements are placed between each brake disc and the hub or the part connected to the hub and which are configured and arranged such as to deflect in axial direction during application of the brake and create forces assisting the axial retraction of the brake discs at release of the brake.
대표청구항
▼
What is claimed is: 1. A disc brake having a caliper receiving one or more brake pads and encircling one or more brake discs, of which at least one brake disc is received slideably on a hub or a part connected to the hub, by means of splines or teeth, which hub is received on a wheel axle, and whic
What is claimed is: 1. A disc brake having a caliper receiving one or more brake pads and encircling one or more brake discs, of which at least one brake disc is received slideably on a hub or a part connected to the hub, by means of splines or teeth, which hub is received on a wheel axle, and which one or more brake pads are parts of brake pad assemblies, wherein two or more disc stabilizing elements are placed between each brake disc and the hub or the part connected to the hub, characterized in that the disc stabilizing elements are configured and arranged such as to deflect in axial direction during application of the brake and create forces assisting the axial retraction of the brake discs at release of the brake. 2. The disc brake of claim 1, characterized in that the disc stabilizing elements are springs acting between each disc and the hub or the part connected to the hub and that to give the axial deflection of the springs the axial sliding of each spring on the hub or the part connected to the hub during actuation of the brake is restricted by axial friction forces established in the points of contacts between the hub or the part connected to the hub and the spring. 3. The disc brake of claims 2, characterized in that the springs have a generally rectangular form in plan view, with two long sides and two short sides and that the short sides of each spring are received in teeth or spline gaps in the brake disc. 4. The disc brake of claim 3, characterized in that a loop and/or semicircular, curved parts are formed in each long side and that the loops and/or the semicircular, curved parts of the springs after assembly are placed adjacent a tooth or spline of the disc and are received in teeth or spline gaps of the hub or the part connected to the hub. 5. The disc brake of claim 4, characterized in that each loop and/or curved parts is/are placed approximately in the middle of each long side and/or that curved parts are formed at both ends of each long side, adjacent the short sides of the spring. 6. The disc brake of claim 3, characterized in that reaction forces are created in radial direction between the short sides or cross bars of each spring and an inner circumference of the disc in contact with said short sides or cross bars at radial displacement of the disc. 7. The disc brake of claim 3, characterized in that the spring has bent parts on each long side, which bent parts clamp a tooth or spline of the hub or the part connected to the hub after assembly. 8. The disc brake of claim 2, characterized in that the spring is having two lower free ends, which lower free ends do engage with a top of two adjacent splines or teeth of the brake disc, and one bent upper end, which upper end does engage with a base between said two adjacent splines or teeth of the brake disc. 9. The disc brake of claim 8, characterized in that the two lower free ends are further elongated so as to be bent over the top of splines or teeth of the hub or the part connected to the hub, which are adjacent to the splines or teeth of the brake disc with the top of which the two lower free ends do engage. 10. The disc brake of claim 8, characterized in that the two lower free ends and the one bent upper end are arranged on the same side of the brake disc. 11. The disc brake of claim 2, characterized in that the spring is made of metal sheet, the sheet being configured substantially as a U-shaped double wall loop element having two legs which are connected by a base, the base being arranged between the top of one spline or tooth of the brake disc and a base of two splines or teeth of the hub or the part connected to the hub. 12. The disc brake of claim 11, characterized in that the legs are shaped and configured such so as to be deflectable in axial direction. 13. The disc brake of claim 2, characterized in that friction forces in axial direction are enlarged by arranging the spring to elastically clamp one or more splines or teeth on the hub or the part connected to the hub. 14. The disc brake of claim 2, characterized in that the spring is comprising a helical spring, both ends of which do extend radially from the helical spring into opposite directions and end in brackets, and in that the brake disc is configured to comprise gaps in its circumferential series of splines or teeth, in which the helical spring is received in a way so as to extend to both sides of said brake disc, whereby the brackets do clamp the splines or teeth of the brake disc which are placed at both sides of the gaps, respectively. 15. The disc brake of claim 2, characterized in that the springs are made of spring wire. 16. The disc brake of claim 2, characterized in that the springs are made of metal sheet. directions. 17. The disc brake of claim 2, characterized in that supports are arranged on the disc in the areas receiving the springs, which supports are positioned to abut the springs. 18. The disc brake of claim 2, characterized in that the springs have a larger stiffness against forces in the tangential direction than in the axial or radial directions. 19. The disc brake of claim 1, characterized in that at least two disc stabilizing elements are arranged between the brake disc and the hub or the part connected to the hub in such a way so as to rotationally center the brake disc on the hub or the part connected to the hub thereby keeping a uniform clearance between the brake disc and the hub or the part connected to the hub. 20. The disc brake of claim 19, characterized in that the clearance is at least 0.4 mm. 21. The disc brake of claim 20, characterized in that the clearance is at least 0.6 mm. 22. The disc brake of claim 21, characterized in that the clearance is at least 0.8 mm. 23. The disc brake of claim 19, characterized in that the disc stabilizing elements are arranged in such a way so as to keep an equal distance between the faces of the splines or the teeth of the brake disc and the faces of the splines or the teeth of the hub or the part connected to the hub. 24. The disc brake of claim 1, characterized in that for brakes having two or more brake discs the axial deflection of the disc stabilizing elements differs between the brake discs, to assist the axial separation of the discs from their intermediate brake pad at release of the brake. 25. The disc brake of claim 24, characterized in that the different axial deflection is given by different axial plays between the disc and the springs depending on the placement of the discs. 26. The disc brake of claim 25, characterized in that the splines or teeth have axial protrusions, which vary between the discs, or between the left and right side of the disc. 27. The disc brake of claim 25, characterized in that the springs have axial protrusions, which vary between the discs, or between the left and right side of the discs. 28. The disc brake of claim 1, characterized in that the disc stabilizing elements are held at the brake discs by means that are removed after assembly of the brake. 29. The disc brake of claim 28, characterized in that the removable means holding the disc stabilizing elements at each brake disc before assembly are lashing wires or are wires having hooks at each end, which hooks do engage with the disc stabilizing elements. 30. The disc brake of claim 1, characterized in that the friction forces are magnified by arranging wedge-shaped contacts between the springs and the hub or the part connected to the hub. 31. The disc brake of claim 30, characterized in that the wedge-shaped contacts are achieved by utilising inclined faces of the splines or teeth. 32. The disc brake of claim 30, characterized in that the wedge-shaped contacts are achieved by a wedge-shape of the spring itself. 33. The disc brake of claim 1, characterized in that the disc stabilizing elements axially frictionally engage the hub or the part connected to the hub and are configured so as to deflect in axial direction but remain axially stationary on the hub or the part connected to the hub when axial forces insufficient to overcome the axial frictional engagement between the disc stabilizing elements and the hub or the part connected to the hub are applied, and to deflect in axial direction and also slide axially on the hub or the part connected to the hub when axial forces sufficient to overcome the axial frictional engagement between the disc stabilizing elements and the hub or the part connected to the hub are applied. 34. The disc brake of claim 1, characterized in that the disc stabilizing elements create elastic forces in radial direction. 35. The disc brake of claim 1, characterized in that different types of disc stabilizing elements are arranged between one brake disc and the hub or the part connected to the hub. 36. The disc brake of claim 1, characterized in that for brakes having two or more brake discs the type of disc stabilizing elements arranged between one of the two or more brake discs and the hub or the part connected to the hub and arranged between another of the two or more brake discs and the hub or the part connected to the hub is different.
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