Vehicle low pressure brake arrangement

Patent metadata

Field	Value
Publication number	US-10065612-B2
Application number	US-201515125643-A
Country	US
Kind code	B2
Filing date	Mar 10, 2015
Priority date	Mar 14, 2014
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A vehicle braking arrangement includes a braking plate and a link arm arranged to connect the braking plate to a vehicle. The braking plate is movable from a rest position to a braking position where contact is made with the ground. The braking plate is arranged for a first mode of operation, corresponding to the rest position, and a second mode of operation, corresponding to the braking position. In the first mode of operation, the braking plate has a first contact area arranged to face the ground, and in the second mode of operation, the braking plate has a second contact area arranged to face the ground. The second area exceeds the first area.

First claim

The invention claimed is:

1. A vehicle braking arrangement comprising:
a braking plate; and
a link arm arranged to connect the braking plate to a vehicle,
wherein the braking plate is movable from a rest position with a certain ground clearance to a braking position where contact is made with the ground, the braking plate arranged for a first mode of operation and a second mode of operation, where the first mode of operation corresponds to the rest position and where the second mode of operation corresponds to the braking position, and where, in the first mode of operation, the braking plate has a first contact area arranged to face the ground and where, in the second mode of operation, the braking plate has a second contact area arranged to face the ground, where the second contact area exceeds the first area, and
wherein the braking plate comprises a circumferentially running sealing rim, where the circumference is broken at at least one break position, where, at each break position, ends of the circumference are separated by a plurality of inserts that in the first mode of operation are stacked on top of each other in a fan-like lamellar structure.

2. The vehicle braking arrangement according to claim 1 , wherein the braking plate further comprises at least one sealing rim, each sealing rim being arranged to run circumferentially and to at least partially contact the ground in the braking position, such that at least one at least partly enclosed volume then is formed between the braking plate and the ground.

3. The vehicle braking arrangement according to claim 2 , wherein in the braking position, a pressure is lowered in each volume, which results in that the braking plate is pressed against the ground by a conferred pressure difference between air outside each volume and air in each volume, such that a retaining force between the braking plate and the ground is obtained.

4. The vehicle braking arrangement according to claim 1 , wherein the circumference comprises a sealing rim and is broken only at one break position having a first end and a second end, where the inserts run from the broken circumference across an inner volume of the braking plate towards an opposite side of the circumference where the inserts are pivotally arranged along a mounting rod, all inserts comprising a corresponding sealing rim piece, the sealing rim pieces separating the first end of the circumference and the second end) of the circumference.

5. The vehicle braking arrangement according to claim 4 , wherein in the second mode of operation, the first end of the circumference and the second end of the circumference have been separated from each other along a circumferential extension, and the inserts have been spread between them such that the sealing rim and the sealing rim pieces of the inserts are arranged in one common plane that is arranged to face the ground.

6. The vehicle braking arrangement according to claim 1 , wherein the braking plate comprises at least two braking plate sectors of equal dimensions which are stacked on top of each other in a pile in the first mode of operation, each braking plate sector having a circumferentially running sealing rim and a corresponding inner volume.

7. The vehicle braking arrangement according to claim 6 , wherein the braking plate sectors are arranged to be spread in a fan-like manner, such that all circumferentially running sealing rims are positioned in a common plane that is arranged to face the ground at the second mode of operation.

8. The vehicle braking arrangement according to claim 1 in combination with a vehicle.

9. A vehicle braking arrangement comprising:
a braking plate; and
a link arm arranged to connect the braking plate to a vehicle,
wherein the braking plate is movable from a rest position with a certain ground clearance to a braking position where contact is made with the ground, the braking plate arranged for a first mode of operation and a second mode of operation, the first mode of operation corresponding to the rest position and the second mode of operation corresponding to the braking position, and where, in the first mode of operation, the braking plate has a first contact area arranged to face the ground and where, in the second mode of operation, the braking plate has a second contact area arranged to face the ground, where the second contact area exceeds the first area, and
wherein the braking plate comprises a first link arm, a second link arm, a third link arm and a fourth link arm, each link arm having a longitudinal extension with a first end part and a second end part, where a partial sealing rim is attached to a part of the side of each link arm which is intended to face the ground, wherein:
the first end parts of the first link arm and the second link arm are connected to each other in a pivoting manner by a first connecting member,
the first end parts of the third link arm and the fourth link arm are connected to each other in a pivoting manner by a second connecting member,
the first link arm and the third link arm are connected to each other in at least a pivoting manner, and where the second link arm and the fourth link arm are connected to each other in at least a pivoting manner,
the braking plate further comprises at least one piston assembly, where said piston assembly is arranged to separate the second end parts of the first link arm and the third link arm from the second end parts of the second link arm and the fourth link arm when the braking plate is changed from the first mode of operation to the second mode of operation, unfolding the link arms.

10. The vehicle braking arrangement according to claim 9 , wherein, at the second end part of each link arm, a corresponding first slot, second slot, third slot and fourth slot extends a certain distance towards the corresponding first end part, where the first slot is connected to the third slot by a first sliding rod that runs through the first slot and the third slot, and that the second slot is connected to the fourth slot by a second sliding rod that runs through the second slot and the fourth slot.

11. The vehicle braking arrangement according to claim 10 , wherein the said piston assembly is arranged to push the sliding rods away from each other such that the sliding rods slide in the corresponding slots, from a first end to a second end of each one of the slots where each first end is closer to a corresponding first end part than each second end.

12. The vehicle braking arrangement according to claim 9 , wherein when the braking plate is in the second mode of operation, the partial sealing rims are arranged such that they together form a circumferentially running sealing rim, only being divided by gaps between adjacent sealing partial rims.

13. A vehicle braking arrangement comprising:
a braking plate; and
a link arm arranged to connect the braking plate to a vehicle,
wherein the braking plate is movable from a rest position with a certain ground clearance to a braking position where contact is made with the ground, the braking plate arranged for a first mode of operation and a second mode of operation, where the first mode of operation corresponds to the rest position and where the second mode of operation corresponds to the braking position, and where, in the first mode of operation, the braking plate has a first contact area arranged to face the ground and where, in the second mode of operation, the braking plate has a second contact area arranged to face the ground, where the second contact area exceeds the first area, and
wherein the braking plate comprises a rubber canvas or airtight fabric that is rolled or folded around a ce

Assignees

• Autoliv Dev

Inventors

• Svensson Christian
• Bråse Dan
• Rydsmo Erik
• Källhammer Jan-Erik

Classifications

• B60T1/14 Primary

  directly on road (portable devices, e.g. chocks B60T3/00) · CPC title