Liquid application unit and liquid application apparatus
AssigneeNtn Corporation
InventorKouhei Kamiya
Life of this patent
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Abstract
A liquid material unit capable of applying a liquid material having a high viscosity stably for a long time includes an application needle and a liquid material container. The liquid material container stores the liquid material. The liquid material container has a space that stores the liquid material and a hole that allows the application needle to pass through the space. A wetting and spreading suppressing structure for the liquid material is disposed at the periphery of the hole in the liquid material container.
Claims5
A liquid application unit for applying a liquid material to a surface of a target using an application needle, the liquid application unit comprising:
- the application needle;
- and
- a liquid material container that stores the liquid material, wherein
- the liquid material container has a space that stores the liquid material and a hole that allows the application needle to pass through the space,
- a wetting and spreading suppressing structure for the liquid material is disposed at a periphery of the hole in the liquid material container,
- the application needle includes a tip end that applies the liquid material to the target and a holding portion disposed closer to a base side than the tip end,
- the wetting and spreading suppressing structure is a protruding portion in which the liquid material container has a protruding shape toward a tip end side of the application needle,
- in a cross section along the hole, the protruding portion includes a first shape portion and a second shape portion, the first shape portion having a shape in which a protruding portion surface that is a surface of the protruding portion is inclined such that a width of the hole is larger on the tip end side than on the holding portion side, the second shape portion having a shape in which the protruding portion surface is inclined outside of the hole such that a width of the protruding portion increases from the tip end side toward the holding portion side, and
- the inclined protruding portion surface in the second shape portion has a steeper slope than the inclined protruding portion surface in the first shape portion with respect to an extending direction of the hole.
Dependencies are inferred from the claim text.