WASHER NOZZLE, WIPER ARM EQUIPPED WITH NOZZLE, AND VEHICLE WIPER DEVICE

• US 20170080903A1
• Filed: 05/15/2015
• Published: 03/23/2017
• Est. Priority Date: 05/19/2014
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: ASMO Company Limited (DENSO Corporation)
• Inventors: Kiyama, Masaaki, HIRAO, Kouichi, Takeuchi, Masanori, UCHINO, Yoshiyuki
• Granted Patent: US 10,442,407 B2
• Time in Patent Office: Days
• CPC Class Codes: B60S 1/522 moving liquid spreading means, e.g. arranged in wiper arms
• CPC Class Codes: B60S 1/524 arranged in wiper blades

Abstract

A washer nozzle comprises: a nozzle connecting portion to which a hose, that supplies a washing liquid, is connected; a nozzle main body portion that has, at an interior thereof, a flow path that communicates with an interior of the nozzle connecting portion and that has a jetting hole that opens toward an exterior at one end side of the nozzle main body portion, the nozzle main body portion jetting the washing liquid out toward a windshield glass of a vehicle from the jetting hole; and a water repellent portion that, at at least a portion of the flow path, structures an inner peripheral surface that extends to the jetting hole, and that is formed of a material that is water repellent.

Claims

1. A washer nozzle comprising:

a nozzle connecting portion to which a hose, that supplies a washing liquid, is connected;

a nozzle main body portion having, at an interior thereof, a flow path that communicates with an interior of the nozzle connecting portion and that has a jetting hole opening toward an exterior at one end side of the flow path, the nozzle main body portion jetting the washing liquid out toward a windshield glass of a vehicle from the jetting hole; and

a water repellent portion structuring, at at least a portion of the flow path, an inner peripheral surface extending to the jetting hole, and being formed of a material that is water repellent.

2. The washer nozzle of claim 1, wherein the nozzle main body portion is manufactured of a fluorine resin or a silicone resin, and the flow path is formed at the nozzle main body portion.

3. The washer nozzle of claim 1, wherein the water repellent portion is formed due to an inner peripheral surface of the flow path that is formed at the nozzle main body portion being coated by a fluorine resin or a silicone resin.

4. The washer nozzle of claim 1, wherein:

the flow path is structured by a tubular member that is tube-shaped and that is provided at the interior of the nozzle main body portion, and

the water repellent portion is formed due to an inner peripheral surface of the tubular member being coated by a fluorine resin or a silicone resin.

5. The washer nozzle of claim 4, wherein:

an outer peripheral surface of the tubular member is formed in a spherical shape, and

the jetting hole is an end surface of the tubular member that is rollably held at one end of the flow path of the nozzle main body portion.

7. The washer nozzle of claim 1, wherein a concave portion that opens to an exterior is formed in the nozzle main body portion, and the jetting hole is formed at a bottom surface of the concave portion.

8. The washer nozzle of claim 7, wherein an angle, that is formed by the bottom surface of the concave portion and an inner peripheral surface of the flow path, is set to be constant in a peripheral direction of the jetting hole.

9. The washer nozzle of claim 7, wherein a sectional surface area of the concave portion, that is cut in a direction orthogonal to a depth direction of the concave portion, becomes larger toward an opening side of the concave portion.

11. A wiper arm equipped with a nozzle, comprising:

a wiper arm rotated reciprocally around an axis of a pivot shaft;

the washer nozzle of claim 1, provided at the wiper arm, the nozzle main body portion being disposed at a transverse direction one side of the wiper arm, and the nozzle connecting portion extending from the nozzle main body portion toward a transverse direction other side of the wiper arm;

an insert-through portion formed at a side wall at the transverse direction one side of the wiper arm, and through which the nozzle connecting portion is inserted;

an engaged portion formed at the side wall at the transverse direction one side, disposed at a length direction one side of the wiper arm with respect to the insert-through portion, and with which the washer nozzle is engaged; and

an engaging portion provided at the nozzle connecting portion and engaging with the engaged portion due to the washer nozzle being slid toward the length direction one side of the wiper arm in a state in which the nozzle connecting portion is inserted through the insert-through portion.

12. The wiper arm equipped with a nozzle of claim 11, wherein, in a state in which the engaging portion is engaged with the engaged portion, the nozzle main body portion covers the insert-through portion from the transverse direction one side of the wiper arm.

13. The wiper arm equipped with a nozzle of claim 11, wherein:

a slit, that opens toward the length direction one side of the wiper arm, is formed at the washer nozzle between the nozzle main body portion and the nozzle connecting portion, and

in a state in which the engaging portion is engaged with the engaged portion, an edge of the insert-through portion is disposed in the slit.

14. A vehicle wiper device comprising:

the wiper arm equipped with a nozzle of claim 11; and

a wiper blade that is mounted to a distal end portion of the wiper arm equipped with a nozzle, and that is configured to reciprocally wipe a windshield glass.

15. The vehicle wiper device of claim 14, comprising:

a sub washer nozzle provided at a region that is further toward a base end side than the washer nozzle that is provided at the wiper arm equipped with a nozzle, and having a sub jetting hole that jets washing liquid out toward the windshield glass; and

a piping section connected in series to the washer nozzle and the sub washer nozzle, and supplying washing liquid to the washer nozzle and the sub washer nozzle,

wherein the piping section has a branching portion that branches the washing liquid off toward the washer nozzle and the sub washer nozzle,

wherein a sum of a surface area of the jetting hole of the washer nozzle and a surface area of the sub jetting hole of the sub washer nozzle is smaller than a sectional surface area of the piping section before branching by the branching portion, and

wherein the surface area of the sub jetting hole of the sub washer nozzle is set to be smaller than the surface area of the jetting hole of the washer nozzle.

18. A vehicle wiper device comprising:

the wiper arm equipped with a nozzle of claim 13; and

a wiper blade that is mounted to a distal end portion of the wiper arm equipped with a nozzle, and that is configured to reciprocally wipe a windshield glass.

19. The vehicle wiper device of claim 18, comprising:

a sub washer nozzle provided at a region that is further toward a base end side than the washer nozzle that is provided at the wiper arm equipped with a nozzle, and having a sub jetting hole that jets washing liquid out toward the windshield glass; and

a piping section connected in series to the washer nozzle and the sub washer nozzle, and supplying washing liquid to the washer nozzle and the sub washer nozzle,

wherein the piping section has a branching portion that branches the washing liquid off toward the washer nozzle and the sub washer nozzle,

wherein a sum of a surface area of the jetting hole of the washer nozzle and a surface area of the sub jetting hole of the sub washer nozzle is smaller than a sectional surface area of the piping section before branching by the branching portion, and

wherein the surface area of the sub jetting hole of the sub washer nozzle is set to be smaller than the surface area of the jetting hole of the washer nozzle.

6. A washer nozzle comprising:

a nozzle main body portion configured to be provided at a wiper arm that is rotated reciprocally around an axis of a pivot shaft, and configured to project out toward a transverse direction outer side of the wiper arm;

a flow path formed at an interior of the nozzle main body portion, and having a jetting hole that opens toward a windshield glass side; and

a flow rectifying portion structuring an outer peripheral portion of the nozzle main body portion, the flow rectifying portion being disposed at a base end side of the wiper arm with respect to the jetting hole, being inclined toward the windshield glass side while heading toward the base end side of the wiper arm as seen from a transverse direction of the wiper arm, and rectifying an airflow that flows from the base end side toward a distal end side of the wiper arm.

10. The washer nozzle of claim 6, wherein, as seen from the transverse direction of the wiper arm, the flow path extends toward the windshield glass side while heading toward the base end side of the wiper arm.

16. The washer nozzle of claim 6, wherein a concave portion that opens to an exterior is formed in the nozzle main body portion, and the jetting hole is formed at a bottom surface of the concave portion.

17. A wiper arm equipped with a nozzle, comprising:

a wiper arm rotated reciprocally around an axis of a pivot shaft;

the washer nozzle of claim 6, provided at the wiper arm, the nozzle main body portion being disposed at a transverse direction one side of the wiper arm, and the nozzle connecting portion extending from the nozzle main body portion toward a transverse direction other side of the wiper arm;

an insert-through portion formed at a side wall at the transverse direction one side of the wiper arm, and through which the nozzle connecting portion is inserted;

an engaged portion formed at the side wall at the transverse direction one side, disposed at a length direction one side of the wiper arm with respect to the insert-through portion, and with which the washer nozzle is engaged; and

an engaging portion provided at the nozzle connecting portion and engaging with the engaged portion due to the washer nozzle being slid toward the length direction one side of the wiper arm in a state in which the nozzle connecting portion is inserted through the insert-through portion.