Liquid jetting nozzle and vehicle sensor washing device

Patent metadata

Field	Value
Publication number	US-12064776-B2
Application number	US-202017424158-A
Country	US
Kind code	B2
Filing date	Jul 7, 2020
Priority date	Oct 18, 2019
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A liquid jetting nozzle-includes a tip body and a tip supported at the tip body. The tip body includes an introduction port which a liquid is introduced. A first and a second ejection port are formed in the tip and each jet out the liquid introduced through the introduction port. A first and a second conduit are formed in the tip. The first conduit structures a downstream side region of a first channel through which the liquid flows from the introduction port toward the side at which the first ejection port is formed. The second conduit structures a downstream side region of a second channel through which the liquid flows from the introduction port toward the side at which the second ejection port is formed. An angle formed between the first and second conduit is specified that the liquid jetting out from the first and second ejection port collide.

First claim

The invention claimed is:

1. A liquid jetting nozzle comprising:
a nozzle main body having a proximal end and a distal end and including, at the proximal end, an introduction port at which a liquid is introduced, and including, at the distal end, an insertion aperture that communicates with a space within the nozzle main body, the space communicating with the introduction port, the space being bounded by a first interior wall, a second interior wall, a third interior wall and a fourth interior wall, the first and second interior walls opposing each other, the third and fourth interior walls opposing each other, the first and second interior walls being orthogonal to the third and fourth interior walls; and
a nozzle tip that is inserted through the insertion aperture of the nozzle main body and positioned within the space of the nozzle main body, the nozzle tip having a first exterior wall, a second exterior wall, a third exterior wall and a fourth exterior wall, the first, second, third and fourth exterior walls being respectively positioned adjacent to the first, second, third and fourth interior walls of the nozzle main body when the nozzle tip is positioned within the space of the nozzle main body, a first channel and a second channel both being formed in one of the first, second, third and fourth exterior walls of the nozzle tip, the first and second channels extending from a proximal end of the nozzle tip to a distal end of the nozzle tip at which a first ejection port and a second ejection port are formed by respective distal ends of the first and second channels, the first ejection port and the second ejection port each jetting out the liquid that has been introduced via the introduction port, wherein:
the first channel includes a first downstream side channel at a downstream side region of the first channel through which the liquid flows from the introduction port toward the distal end of the first channel at which the first ejection port is formed, and the second channel includes a second downstream side channel at a downstream side region of the second channel through which the liquid flows from the introduction port toward the distal end of the second channel at which the second ejection port is formed, and
an angle formed between the first downstream side channel and the second downstream side channel is configured such that the liquid jetted out from the first ejection port and the liquid jetted out from the second ejection port collide.

2. The liquid jetting nozzle according to claim 1 , wherein the angle formed between the first downstream side channel and the second downstream side channel is configured such that when the nozzle main body and the nozzle tip are viewed from a direction in which the first ejection port and the second ejection port are arrayed, a range across which the liquid jetted out from the first ejection port and the liquid jetted out from the second ejection port spread after colliding is wider than a range across which the liquid jetted out from the first ejection port and the liquid jetted out from the second ejection port spread after colliding when the nozzle main body and the nozzle tip are viewed from a direction orthogonal to the direction in which the first ejection port and the second ejection port are arrayed.

3. The liquid jetting nozzle according to claim 1 , wherein:
the nozzle tip includes a flow-directing portion located at an upstream side of the first and second channels, the flow-directing portion directing a flow of the liquid introduced via the introduction port, and the flow-directing portion distributing and dividing the liquid into the first channel and the second channel.

4. The liquid jetting nozzle according to claim 1 , wherein, in a state in which the nozzle tip is positioned within the space of the nozzle main body, at least a part of the first channel and a part of the second channel are formed between the nozzle tip and one of the first, second, third and fourth interior walls of the nozzle main body.

5. The liquid jetting nozzle according to claim 1 , wherein a different one of the first, second, third and fourth exterior walls of the nozzle tip other than the one of the first, second, third and fourth exterior walls that includes the first and second channels, includes a third channel that extends from the proximal end of the nozzle tip to the distal end of the nozzle tip at which a third ejection port is formed, the third ejection port jetting out the liquid introduced via the introduction port in a different direction from a direction of the liquid jetted out from the first ejection port and a direction of the liquid jetted out from the second ejection port, the liquid jetted out from the third ejection port striking a relatively small area of a surface to be wetted by the liquid within a relatively large area of the surface to be wetted by the liquid that is jetted out from the first and second ejection ports.

6. A vehicle sensor washing device comprising a liquid jetting nozzle, the liquid jetting nozzle including:
a nozzle main body having a proximal end and a distal end and including, at the proximal end, an introduction port at which a liquid is introduced, and including, at the distal end, an insertion aperture that communicates with a space within the nozzle main body, the space communicating with the introduction port, the space being bounded by a first interior wall, a second interior wall, a third interior wall and a fourth interior wall, the first and second interior walls opposing each other, the third and fourth interior walls opposing each other, the first and second interior walls being orthogonal to the third and fourth interior walls; and
a nozzle tip that is inserted through the insertion aperture of the nozzle main body and positioned within the space of the nozzle main body, the nozzle tip having a first exterior wall, a second exterior wall, a third exterior wall and a fourth exterior wall, the first, second, third and fourth exterior walls being respectively positioned adjacent to the first, second, third and fourth interior walls of the nozzle main body when the nozzle tip is positioned within the space of the nozzle main body, a first channel and a second channel both being formed in one of the first, second, third and fourth exterior walls of the nozzle tip, the first and second channels extending from a proximal end of the nozzle tip to a distal end of the nozzle tip at which a first ejection port and a second ejection port are formed by respective distal ends of the first and second channels, the first ejection port and the second ejection port each jetting out the liquid that has been introduced via the introduction port, wherein:
the liquid from the first ejection port is jetted out toward a side at which a sensor provided at the vehicle is disposed,
the liquid from the second ejection port is jetted out toward an opposite side from the side at which the sensor is disposed, and
the liquid jetted out from the first ejection port and the liquid jetted out from the second ejection port collide and a collided flow of the liquid is directed at the sensor.

Assignees

• Denso Corp

Inventors

• Hayashi Kiyoshi

Classifications

• B60S1/56

  specially adapted for cleaning other parts or devices than front windows or windscreens {(rear-view mirror arrangements mounted on vehicle exterior including cleaning devices B60R1/0602)} · CPC title

• B60S1/52 Primary

  Arrangement of nozzles; {Liquid spreading means}(nozzles per se B05B) · CPC title

• B05B1/26 Primary

  with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets · CPC title

• B60S1/566

  including wiping devices (B60S1/563, B60S1/583 take precedence) · CPC title

• B05B1/14 Primary

  with multiple outlet openings (B05B1/02, B05B1/26 take precedence); with strainers in or outside the outlet opening · CPC title