Wiper device

Patent metadata

Field	Value
Publication number	US-10625714-B2
Application number	US-201615566774-A
Country	US
Kind code	B2
Filing date	Mar 23, 2016
Priority date	Apr 17, 2015
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

Base end sides of washer tubes 44, 45 are arranged in an axial direction of a swinging shaft PS at one end portion of an arm head 40 , and they are drawn out from a head side pipe housing portion 41 a so as to curve toward a side opposite to a shaft fixing portion 42 side. Each of the washer tubes 44, 45 is wound around the shaft fixing portion 42 during swinging of the arm head 40 without applying any load to the swinging shaft PS. No tension acts on each of the washer tubes 44, 45 , and each of the washer tubes 44, 45 is not rubbed against the shaft fixing portion 42 . Therefore, deterioration of the washer tubes 44, 45 can be suppressed. When the washer tubes 44, 45 are wound around the shaft fixing portion 42 , a periphery of the shaft fixing portion 42 is suppressed from swelling outward in a radial direction thereof. This makes it possible to prevent the arm head 40 around the swinging shaft PS from increasing in size.

First claim

What is claimed is:

1. A wiper device provided with a wiper blade configured to wipe a surface to be wiped, the wiper device comprising:
an arm head provided with a shaft fixing portion to be fixed to a swinging shaft, the shaft fixing portion being provided at one end portion of the arm head;
an arm shank having one end portion and the other end portion, the one end portion being fitted to the other end portion of the arm head, the other end portion being fitted to the wiper blade;
a nozzle unit provided on the arm shank or the wiper blade, the nozzle unit being configured to spray a cleaning fluid toward the surface to be wiped;
a head side pipe housing portion provided in the arm head along a longitudinal direction thereof, the head side pipe housing portion being opened toward the surface to be wiped; and
a forward side pipe and a backward side pipe housed in the head side pipe housing portion, a tip end side of each of the forward side pipe and the backward side pipe being connected to the nozzle unit,
wherein base end sides of the forward side pipe and the backward side pipe are arranged in an axial direction of the swinging shaft at one end portion of the arm head, and the base end sides are drawn out from the head side pipe housing portion so as to curve toward a side opposite to a side of the shaft fixing portion.

2. The wiper device according to claim 1 ,
wherein a holding hole is provided at one end portion of the arm head, the holding hole being configured to hold the forward side pipe and the backward side pipe so as to be arranged side by side in the axial direction of the swinging shaft.

3. The wiper device according to claim 1 ,
wherein a guide wall is provided at one end portion of the arm head, the guide wall being configured to place the forward side pipe and the backward side pipe along an outer periphery of the shaft fixing portion during swinging of the shaft fixing portion in one direction.

4. The wiper device according to claim 1 ,
wherein each of the forward side pipe and the backward side pipe includes an upstream pipe and a downstream pipe, and a connecting member is provided in the head side pipe housing portion, the connecting member being configured to connect the upstream pipe to the corresponding downstream pipe.

5. The wiper device according to claim 1 ,
wherein a shank side pipe housing portion is provided in the arm shank so as to extend along a longitudinal direction of the arm shank and be opened toward a side of the surface to be wiped, the shank side pipe housing portion being configured to house the forward side pipe and the backward side pipe therein.

6. The wiper device according to claim 1 ,
wherein one end portion of the arm shank is provided rotatably via a rotary shaft with respect to the other end portion of the arm head, the rotary shaft extending in a direction intersecting the swinging shaft, and
wherein the forward side pipe and the backward side pipe are arranged in a wiping direction of the wiper blade in a portion of the rotary shaft.

7. A wiper device provided with a wiper blade configured to wipe a surface to be wiped, the wiper device comprising:
an arm head, one end portion of the arm head being fitted to a swinging shaft;
an arm shank having one end portion and the other end portion, the one end portion being fitted to the other end portion of the arm head, the other end portion being fitted to the wiper blade;
a nozzle unit provided on the arm shank or the wiper blade, the nozzle unit being configured to spray a cleaning fluid toward the surface to be wiped;
a shank side pipe housing portion provided in the arm shank along a longitudinal direction thereof, the shank side pipe housing portion being opened toward the surface to be wiped;
a pipe housed in the shank side pipe housing portion near a forward side of the shank side pipe housing portion in a wiping direction of the wiper device, the pipe being configured to feed the cleaning fluid to the nozzle unit; and
a spring housed in the shank side pipe housing portion, the spring being configured to generate elastic force to press the wiper blade toward the surface to be wiped,
wherein a first pipe holding portion and a second pipe holding portion are respectively provided at both end sides of the spring in the arm shank, each of the first and second pipe holding portions being configured to hold the pipe side by side with respect to the spring.

8. The wiper device according to claim 7 ,
wherein the first pipe holding portion and the second pipe holding portion hold the pipe in a non-contact state with the spring.

9. The wiper device according to claim 7 ,
wherein a head side pipe housing portion configured to house the pipe is provided in the arm head so as to extend along a longitudinal direction of the arm head, the head side pipe housing portion being opened toward the surface to be wiped.

10. The wiper device according to claim 7 ,
wherein a pin fitting wall is provided at the other end portion of the arm head, a pin for supporting one end portion of the spring being fitted to the pin fitting wall,
wherein the first pipe holding portion provided at the one end portion of the spring is constituted of a projecting piece, the projecting piece projecting from a side wall of the arm shank in a wiping direction of the wiper blade, and
wherein the pipe is held by the pin fitting wall and the projecting piece.

11. The wiper device according to claim 10 ,
wherein a dimension of a gap formed between the projecting piece and the pin fitting wall is larger than a diameter dimension of the pipe when the arm shank is rotated relative to the arm head in a direction opposite to a direction of locking back.

12. The wiper device according to claim 7 ,
wherein the first pipe holding portion provided at a side of the one end portion of the spring is constituted of a first extending portion and a second extending portion, the first extending portion extending from a side wall of the arm shank in a wiping direction of the wiper blade, the second extending portion extending from the first extending portion toward a side opposite to a side of the surface to be wiped.

13. The wiper device according to claim 7 ,
wherein the second pipe holding portion provided on a side of the other end portion of the spring is constituted of a supporting piece and a holding piece, the supporting piece extending from a side wall of the arm shank in a wiping direction of the wiper blade, the holding piece being fitted to the supporting piece.

14. The wiper device according to claim 7 ,
wherein a third pipe holding portion configured to hold the pipe is provided in the arm shank between the second pipe holding portion provided at the other end portion side of the spring and the other end portion of the arm shank.

Assignees

• Mitsuba Corp
• Honda Motor Co Ltd

Inventors

• Shimoyama Masayuki
• Nishikawa Tomoya
• Kuwabara Atsuhiro
• Yamashita Yutaka
• Fujiwara Shin
• Koizumi Hideyuki
• Sasaki Takeshi
• Goto Taisuke
• Ohmaru Tatsuya
• Takahashi Yuki

Classifications

• B60S1/48 Primary

  Liquid supply therefor · CPC title

• B60S1/522

  moving liquid spreading means, e.g. arranged in wiper arms · CPC title

• B60S1/04

  Wipers or the like, e.g. scrapers · CPC title

• B60S1/34

  Wiper arms; Mountings therefor {(wiper arms provided with liquid spreading means B60S1/522; with gas spreading means B60S1/544)} · CPC title

• B60S1/3415 Primary

  with means for supplying cleaning fluid to windscreen cleaners, e.g. washers (arrangement of nozzles B60S1/52) · CPC title