Shock-absorbing element for a motor vehicle

A spring and damper unit for a motor vehicle comprising

• a cylindrical casing (1) forming a cylinder chamber and filled with compressed air;
• a double acting piston (5,5′) having a one-sided piston rod (6,6′), wherein the cylindrical casing (1) and the piston rod (6,6′) are adapted for being clamped between a body part and a wheel of the motor vehicle and wherein the double acting piston (5,5′) divides the cylinder chamber of the casing (1) into two pressure chambers (10, 10′, 11, 11′);
• a first overflow throttle (13) connecting the two pressure chambers (10, 10′, 11, 11′) to each other in the double acting piston (5,5) for the purpose of volume balancing wherein the first overflow throttle (13) includes a first passage and a first springing sealing disk (23) for opening or closing the first passage;
• a second overflow throttle (13) connecting the two pressure chambers (10, 10′, 11, 11′) to each other in the double acting piston (5,5) for the purpose of volume balancing, wherein the second overflow throttle (13) includes a second passage and a second springing sealing disk (23) for opening or closing the second passage,
• wherein the first overflow throttle (13) is disposed oppositely directed relative to the second overflow throttle (13) with respect to a flow passage direction and wherein a blocked first overflow throttle (13) can be bypassed by a free second overflow throttle (13);
• a first plurality of passage bore holes (35, 51) are coordinated to the first overflow throttle (13), wherein the first plurality of passage bore holes (35, 51) is disposed on a first common part circle in a uniform distribution, wherein the first plurality of passage bore holes (35, 51) of the first overflow throttle (13) is formed as a first plurality of inclined bore holes and are running alternately from a first larger part circle on the one hand to a first smaller part circle on the other hand;
• a second plurality of passage bore holes (35, 51) are coordinated to the second overflow throttle (13), wherein the second plurality of passage bore holes (35, 51) is disposed on a second common part circle in a uniform distribution, wherein the second plurality of passage bore holes (35, 51) of the second overflow throttle (13) is formed as a second plurality of inclined bore holes and are running alternately from a second larger part circle on the one hand to a second smaller part circle on the other hand;
• wherein first smaller part openings of the first plurality of passage bore holes (35, 51) of the first smaller part circle and first larger part openings of the first plurality of passage bore holes (35, 51) of the first larger part circle of each side are separated from each other by a first ring shaped web face (41, 54), and wherein the first springingly sealing disks (23) with their large diameter region are sealingly resting on the first ring-shaped web face (41,54);
• and
• wherein second smaller part openings of the second plurality of passage bore holes (35, 51) of the second smaller part circle and second larger part openings of the second plurality of passage bore holes (35, 51) of the second larger part circle of each side are separated from each other by a second ring shaped web face (41, 54), and wherein the second springingly sealing disks (23) with their large diameter region are sealingly resting on the second ring-shaped web face (41,54).

Spring and damper unit for motor vehicle comprising a cylindrical casing (1) filled with compressed air and a double acting piston (5,5′) with a one-sided piston rod (6,6′), wherein the casing (1) and the piston rod (6,6′) are clamped between a body part and a wheel of the motor vehicle and wherein the piston (5,5′) divides the cylinder space of the casing (1) into two pressure spaces (10, 10′, 11, 11′) and wherein the two pressure spaces (10, 10′, 11, 11′) are connected to each other through a first overflow throttle (13) and through a second overflow throttle (13) in the piston (5,5′) for the purpose of volume balancing wherein

• each said overflow throttle (13) comprises a passage and a plurality of springing sealing disks (23) for opening or closing the passage, wherein one of the plurality of springing sealing disks (23) is disposed oppositely directed relative to another one of the plurality of springing sealing disks (23) in their flow passage direction and wherein a blocked one of the overflow throttles (13) can be bypassed by a free remaining one of the overflow throttles (13),
• wherein
• several passage bore holes (35, 51) are coordinated to each overflow throttle (13), wherein the passage bore holes (35, 51) are disposed on a common part circle in uniform distribution,
• the passage bore holes (35, 51) of the two overflow throttles (13) are formed as inclined bore holes and are running alternately from a larger part circle on the one hand to a smaller part circle on the other hand,
• the openings of the passage bore holes (35, 51) of the smaller part circle and the openings of the passage bore holes (35, 51) of the larger part circle of each side are separated from each other by a ring shaped web face (41, 54), and
• the sealing disks (23) having a large diameter region are sealingly resting on the web faces (41,54).

Spring and damper unit for motor vehicle comprising a cylindrical casing (1) filled with compressed air and a double acting piston (5,5′) with a one-sided piston rod (6,6′), wherein the casing (1) and the piston rod (6,6′) are clamped between a body part and a wheel of the motor vehicle and wherein the piston (5,5′) divides the cylinder space of the casing (1) into two pressure spaces (10, 10′, 11, 11′) and wherein the two pressure spaces (10, 10′, 11, 11′) are connected to each other through a first overflow throttle (13) and through a second overflow throttle (13) in the piston (5,5′) for the purpose of volume balancing wherein each said overflow throttle (13) comprises a passage and a plurality of springing sealing disks (23) for opening or closing the passage, wherein one of the plurality of springing sealing disks (23) is disposed oppositely directed relative to another one of the plurality of springing sealing disks (23) in their flow passage direction and wherein a blocked one of the overflow throttles (13) can be bypassed by a free remaining one of the overflow throttles (13),

• wherein
• several passage bore holes (35, 51) are coordinated to each overflow throttle (13), wherein the passage bore holes (35, 51) are disposed on a common part circle in uniform distribution,
• the passage bore holes (35, 51) of the two overflow throttles (13) are formed as inclined bore holes and are running alternately from a larger part circle on the one hand to a smaller part circle on the other hand,
• the openings of the passage bore holes (35, 51) of the smaller part circle and the openings of the passage bore holes (35, 51) of the larger part circle of each side are separated from each other by a ring shaped web face (41, 54), and
• the sealing disks (23) having a large diameter region are sealingly resting on the web faces (41, 54), wherein
• the sealing disks (23) are pretensioned into their closing position,
• by a different radial distance of the inner web faces (28, 33) of the cover pieces (18, 19) relative to the inner web faces (40) of the middle piece (20) or the axis of the piston (6) and/or
• by a lower thickness of the spacer disks (24) relative to the thickness of the sealing disks (23).

A spring and damper unit for a motor vehicle comprising

• a cylindrical casing (1) forming a cylinder chamber and filled with compressed air;
• a double acting piston (5,5′) having a one-sided piston rod (6,6′), wherein the cylindrical casing (1) and the piston rod (6,6′) are adapted for being clamped between a body part and a wheel of the motor vehicle and wherein the double acting piston (5,5′) divides the cylinder chamber of the casing (1) into two pressure chambers (10, 10′, 11, 11′);
• a first overflow throttle (13) connecting the two pressure chambers (10, 10′, 11, 11′) to each other in the double acting piston (5,5) for the purpose of volume balancing wherein the first overflow throttle (13) includes a first passage and a first springing sealing disk (23) for opening or closing the first passage;
• a second overflow throttle (13) connecting the two pressure chambers (10, 10′, 11, 11′) to each other in the double acting piston (5,5) for the purpose of volume balancing, wherein the second overflow throttle (13) includes a second passage and a second springing sealing disk (23) for opening or closing the second passage,
• wherein the first overflow throttle (13) is disposed oppositely directed relative to the second overflow throttle (13) with respect to a flow passage direction and wherein a blocked first overflow throttle (13) can be bypassed by a free second overflow throttle (13);
• a first plurality of passage bore holes (35, 51) are coordinated to the first overflow throttle (13), wherein the first plurality of passage bore holes (35, 51) is disposed on a first common part circle in a uniform distribution, wherein the first plurality of passage bore holes (35, 51) of the first overflow throttle (13) is formed as a first plurality of inclined bore holes and are running alternately from a first larger part circle on the one hand to a first smaller part circle on the other hand;
• a second plurality of passage bore holes (35, 51) are coordinated to the second overflow throttle (13), wherein the second plurality of passage bore holes (35, 51) is disposed on a second common part circle in a uniform distribution, wherein the second plurality of passage bore holes (35, 51) of the second overflow throttle (13) is formed as a second plurality of inclined bore holes and are running alternately from a second larger part circle on the one hand to a second smaller part circle on the other hand;
• wherein first smaller part openings of the first plurality of passage bore holes (35, 51) of the first smaller part circle and first larger part openings of the first plurality of passage bore holes (35, 51) of the first larger part circle of each side are separated from each other be a first ring shaped web face (41, 54), and wherein the first springingly sealing disks (23) with their large diameter region are sealingly resting on the first ring-shaped web face (41,54);
• and
• wherein second smaller part openings of the second plurality of passage bore holes (35, 51) of the second smaller part circle and second larger part openings of the second plurality of passage bore holes (35, 51) of the second larger part circle of each side are separated from each other by a second ring shaped web face (41, 54), and wherein the second springingly sealing disks (23) with their large diameter region are sealingly resting on the second ring-shaped web face (41,54),
• wherein the first springingly sealing disks (23) of the first overflow throttle (13) are made of a spring material and are fixedly clamped in the region of their smaller diameter;
• wherein second springingly sealing disks (23) of the second overflow throttle (13) are made of a spring material and are fixedly clamped in the region of their smaller diameter,
• wherein the first springingly sealing disks (23) and the second springingly sealing disks are pretensioned into their closing position by a lower thickness of the spacer disks (24) relative to the thickness of the sealing disks (23).

The spring and damper unit for a motor vehicle comprising

• a cylindrical casing (1) forming a cylinder chamber and filled with compressed air;
• a double acting piston (5,5′) having a one-sided piston rod (6,6′), wherein the cylindrical casing (1) and the piston rod (6,6′) are adapted for being clamped between a body part and a wheel of the motor vehicle and wherein the double acting piston (5,5′) divides the cylinder chamber of the casing (1) into two pressure chambers (10, 10′, 11, 11′);
• a first overflow throttle (13) connecting the two pressure chambers (10, 10′, 11, 11′) to each other in the double acting piston (5,5) for the purpose of volume balancing wherein the first overflow throttle (13) includes a first passage and a first springing sealing disk (23) for opening or closing the first passage;
• a second overflow throttle (13) connecting the two pressure chambers (10, 10′, 11, 11′) to each other in the double acting piston (5,5) for the purpose of volume balancing, wherein the second overflow throttle (13) includes a second passage and a second springing sealing disk (23) for opening or closing the second passage,
• wherein the first overflow throttle (13) is disposed oppositely directed relative to the second overflow throttle (13) with respect to a flow passage direction and wherein a blocked first overflow throttle (13) can be bypassed by a free second overflow throttle (13);
• a first plurality of passage bore holes (35, 51) are coordinated to the first overflow throttle (13), wherein the first plurality of passage bore holes (35, 51) is disposed on a first common part circle in a uniform distribution,
• wherein the first plurality of passage bore holes (35, 51) of the first overflow throttle (13) is formed as a first plurality of inclined bore holes and are running alternately from a first larger part circle on the one hand to a first smaller part circle on the other hand;
• a second plurality of passage bore holes (35, 51) are coordinated to the second overflow throttle (13), wherein the second plurality of passage bore holes (35, 51) is disposed on a second common part circle in a uniform distribution, wherein the second plurality of passage bore holes (35, 51) of the second overflow throttle (13) is formed as a second plurality of inclined bore holes and are running alternately from a second larger part circle on the one hand to a second smaller part circle on the other hand;
• wherein first smaller part openings of the first plurality of passage bore holes (35, 51) of the first smaller part circle and first larger part openings of the first plurality of passage bore holes (35, 51) of the first larger part circle of each side are separated from each other by a first ring shaped web face (41, 54), and wherein the first springingly sealing disks (23) with their large diameter region are sealingly resting on the first ring-shaped web face (41,54);
• and
• wherein second smaller part openings of the second plurality of passage bore holes (35, 51) of the second smaller part circle and second larger part openings of the second plurality of passage bore holes (35, 51) of the second larger part circle of each side are separated from each other by a second ring shaped web face (41, 54), and wherein the second springingly sealing disks (23) with their large diameter region are sealingly resting on the second ring-shaped web face (41,54);
• a throttle insert (16);
• a first cover piece (18);
• a second cover piece (19);
• a middle piece (20);
• a first spacer disk (24) disposed between the first cover piece (18) and the middle piece (20);
• a second spacer disk (24) disposed between the middle piece (20) and the second cover piece (19), wherein the first spacer disk (24) and the second spacer disk (24) are jointly tensioned and clamped with the throttle insert (16).