Leak test apparatus and leak test method
AssigneeToyota Jidosha Kabushiki Kaisha
InventorSo Kawasaki
Life of this patent
Estimating the term…
Abstract
A leak test apparatus that tests for a leak in a workpiece includes a plate; a seal that is able to move relative to the plate and is supported by the plate; a driving portion that supports the plate and moves the plate; and a pressure chamber that is surrounded by the plate and the seal. The seal is formed in a shape that enables the pressure chamber to be communicated with an outside.
Claims9
A leak test apparatus that tests for a leak in a workpiece by sealing an open portion formed on one side surface of the workpiece, comprising:
- a plate;
- a seal that moves relative to the plate and is supported by the plate;
- a driving portion that supports the plate and moves the plate;
- and
- a pressure chamber that is surrounded by the plate and the seal,
- wherein the seal is formed in a shape that enables the pressure chamber to be communicated with an outside of the seal;
- the seal is formed in a shape that enables the open portion to be communicated with the pressure chamber;
- the pressure chamber is configured such that test fluid from the workpiece is introduced into the pressure chamber via the seal;
- and
- the seal is pushed by a pressure of the test fluid from the pressure chamber, and seals the open portion, and the leak test apparatus thereby is configured to detect a leakage amount of the workpiece after the pressure of the test fluid pushes the seal.
A leak test method used by a leak test apparatus that tests for a leak in a workpiece by sealing an open portion formed on one side surface of the workpiece, the leak test apparatus including
- a plate that is arranged on a side facing the one side surface of the workpiece;
- a seal that moves relative to the plate in a direction with respect to the workpiece, and is supported by a side of the plate that faces the one side surface of the workpiece;
- a driving portion that supports the plate and moves the plate and the seal with respect to the workpiece;
- and
- a pressure chamber inside of which the seal is slidably inserted,
- the seal being formed in a shape that enables the open portion of the workpiece to be communicated with the pressure chamber,
- the leak test method comprising:
- driving the driving portion;
- bringing the plate toward the workpiece until the seal abuts against the open portion;
- introducing test fluid into the pressure chamber via the seal when the test fluid is introduced into the workpiece;
- and
- pushing the seal with a pressure of the test fluid from the pressure chamber;
- and
- detecting a leakage amount of the workpiece after the pushing of the seal with the pressure of the test fluid.
Dependencies are inferred from the claim text.