Tire changer and method of measuring force variations
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60C-025/05
B60C-025/138
G01M-017/02
B60C-025/132
출원번호
US-0716854
(2015-05-19)
등록번호
US-9834047
(2017-12-05)
우선권정보
EP-10001625 (2010-02-17)
발명자
/ 주소
Sotgiu, Paolo
출원인 / 주소
SNAP-ON EQUIPMENT SRL A UNICO SOCIO
대리인 / 주소
McDermott Will & Emery LLP
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
A tire changer which comprises a mounting device for receiving at least a wheel rim of a wheel/tire assembly, wherein the mounting device has an axis (S), a roller which is able to contact a peripheral surface of the wheel/tire assembly and to apply a predetermined force to the peripheral surface of
A tire changer which comprises a mounting device for receiving at least a wheel rim of a wheel/tire assembly, wherein the mounting device has an axis (S), a roller which is able to contact a peripheral surface of the wheel/tire assembly and to apply a predetermined force to the peripheral surface of the wheel/tire assembly, a control device for controlling the predetermined force applied by the during a rotation of the wheel/tire assembly about the axis (S) of the mounting device and a sensor device for measuring force variations acting between the peripheral surface of the wheel/tire assembly and the roller, wherein supports of the roller and of the mounting device are designed for a relative movement of the roller and of the mounting device towards each other along a straight line to apply the predetermined force to the peripheral surface of the wheel/tire assembly.
대표청구항▼
1. A tyre changer, comprising: a mounting device for receiving at least a wheel rim of a wheel/tyre assembly, the mounting device having an axis,a roller being able to contact a peripheral surface of the wheel/tyre assembly and to apply a predetermined force to the peripheral surface of the wheel/ty
1. A tyre changer, comprising: a mounting device for receiving at least a wheel rim of a wheel/tyre assembly, the mounting device having an axis,a roller being able to contact a peripheral surface of the wheel/tyre assembly and to apply a predetermined force to the peripheral surface of the wheel/tyre assembly,a control device for controlling the predetermined force applied by the roller during a rotation of the wheel/tyre assembly about the axis of the mounting device anda sensor device for measuring force variations acting between the peripheral surface of the wheel/tyre assembly and the roller,wherein supports of the roller and of the mounting device are designed for a relative movement of the roller and of the mounting device towards each other along a straight line to apply the predetermined force to the peripheral surface of the wheel/tyre assembly, anda scanning device designed to scan the lateral runout of at least one tyre side wall at the angular position of the roller. 2. The tyre changer according to claim 1, wherein the peripheral surface of the wheel/tyre assembly is the tread surface of the tyre. 3. The tyre changer according to claim 1, wherein the roller is supported in a fixed radial position with respect to the wheel/tyre assembly at least during the rotation of the wheel/tyre assembly. 4. The tyre changer according to claim 1, further comprising an angular measuring device configured to determine the angular position of the wheel/tyre assembly during its rotation, especially during the measurement of the force variations. 5. The tyre changer according to claim 1, wherein the tyre changer is configured to measure the lateral runout of the tyre while the roller engages the peripheral surface of the wheel/tyre assembly. 6. The tyre changer according to claim 1, wherein the tyre changer is configured to measure the lateral runout of the tyre while the roller is out of engagement with the tyre. 7. The tyre changer according to claim 6, wherein the tyre changer is configured to measure the lateral runout with different inflation pressures of the tyre under loaded condition or under unloaded condition. 8. The tyre changer according to claim 1, further comprising a scanning device configured to determine the radial rim runout, especially the runout of the bead seat surfaces. 9. The tyre changer according to claim 8, wherein the tyre changer is configured to use the measured runout values to determine the tyre stiffness. 10. The tyre changer according to claim 8, further comprising matching means for remounting the tyre on the wheel rim into an angular position in which high spot of the force variations and low spot of the radial rim runout match. 11. The tyre changer according to claim 1, wherein the tyre changer is configured to compare at least one measured value of the force measurement and/or of the runout measurement with a respective predetermined force value or runout value for quality check. 12. Method of measuring force variations acting between a peripheral surface of a wheel/tyre assembly and a roller, in which the wheel/tyre assembly is mounted on a mounting device of a tyre changer, the mounting device having an axis, the method comprising: moving the roller and the wheel/tyre assembly relatively towards each other along a straight line to apply a controlled predetermined force to a peripheral surface of the wheel/tyre assembly,measuring force variations acting between the peripheral surface and the roller, while the wheel/tyre assembly is rotated about the axis, anddetermining the lateral runout of at least one tyre side wall at an angular position at which the roller engages the peripheral surface of the wheel/tyre assembly. 13. The method according to claim 12, further comprising measuring force variations acting along the straight line extended between the axis of the mounting device and the roller axis and/or perpendicular to said straight line. 14. The method according to claim 12, further comprising locking stationary the mounting device and the roller in their positions during the measurement of the force variations. 15. The method according to claim 12, further comprising measuring the lateral runout of the tyre while the roller engages the peripheral surface of the wheel/tyre assembly. 16. The method according to claim 15, further comprising measuring the lateral runout with different inflation pressures of the tyre under loaded condition or under unloaded condition. 17. The method according to claim 12, further comprising measuring the lateral runout of the tyre while the roller is out of engagement with the tyre. 18. Method according to claim 12, further comprising measuring the rim runout, especially the runout of the bead seat surfaces. 19. Method according to claim 12, wherein the runout measurement and/or the force measurement are carried out in relation to the respective angular position at the wheel rim and/or at the tyre. 20. Method according to claim 12, further comprising comparing at least one measured value of the force measurement and/or of the runout measurement with a respective predetermined force value or runout value. 21. Method of measuring force variations acting between a peripheral surface of a wheel/tyre assembly and a roller, in which the wheel/tyre assembly is mounted on a mounting device of a tyre changer, the mounting device having an axis, the method comprising: moving the roller and the wheel/tyre assembly relatively towards each other along a straight line to apply a controlled predetermined force to a peripheral surface of the wheel/tyre assembly,measuring force variations acting between the peripheral surface and the roller, while the wheel/tyre assembly is rotated about the axis, andcomparing at least one measured value of the force measurement with a respective predetermined force value. 22. Method according to claim 21, further comprising measuring the rim runout, especially the runout of the bead seat surfaces, andcomparing at least one measured value of the rim runout measurement with a respective predetermined runout value. 23. Method according to claim 22, further comprising remounting the tyre with respect to the wheel rim to minimize vibration or force variation of the rotating wheel/tyre assembly. 24. Method according to claim 21, wherein the rim runout measurement and/or the force measurement are carried out in relation to the respective angular position at the wheel rim and/or at the tyre. 25. Method of measuring force variations acting between a peripheral surface of a wheel/tyre assembly and a roller, in which the wheel/tyre assembly is mounted on a mounting device of a tyre changer, the mounting device having an axis, the method comprising: moving the roller and the wheel/tyre assembly relatively towards each other along a straight line to apply a controlled predetermined force to a peripheral surface of the wheel/tyre assembly,measuring force variations acting between the peripheral surface and the roller, while the wheel/tyre assembly is rotated about the axis,measuring the rim runout, especially the runout of the bead seat surfaces,wherein the runout of the rim and the force variation of the wheel/tyre assembly are measured in relation to their angular position within 360°, andsubtracting the measured runout of the rim from the measured force variation of the wheel/tyre assembly to determine the tyre-stiffness around the complete tyre periphery.
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이 특허에 인용된 특허 (17)
Remo Corghi IT, Apparatus for determining geometrical defects in a motor vehicle rim and tire mounted on a tire removal machine, and the tire removal machine equipped therewith.
Harrold David O. (Fort Wayne IN) Powell Charles F. (Fort Wayne IN), Compact radial force measuring apparatus for determining variations in radial force around a tire and rim assembly.
Kostka, Guenther; Schmitt, Peter; Hassler, Ulf; Hanke, Randolf, Detection of irregularities in a convex surface, such as a tire sidewall, using band-pass filtering.
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