# US 2016/0355159 A1 · Wiper arm

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- Number: US 2016/0355159 A1
- Document ID: US20160355159A1
- Status: Published application
- Kind: A1
- Application number: 15/117,608
- Filed: 2015-02-17
- Published: 2016-12-08
- Earliest claimed: 2014-02-19
- Assignees: Nippon Wiper Blade Co., Ltd.
- Applicants: Nippon Wiper Blade Co., Ltd.
- Inventors: Katsuhiro OUCHI
- Web page: https://patentgrep.com/patent/US20160355159A1

## CPC

- B60S 1/3465: {with coil springs}
- B60S 1/3436: {Mounting heads}
- B60S 1/345: {the elements being a link piece and a mounting head}
- B60S 1/3452: {the joint being a snap fit pivot joint}
- B60S 1/3468: {Mountings therefor}
- B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR

## Abstract

There is provided a wiper arm rotatably connecting an arm body to an arm head and including a spring member provided between the arm head and the arm body, the thickness of which is decreased while its mechanical strength is sufficiently maintained. A gap section reaching a pivot shaft hole is provided in a head connection section of a retainer. A recess is provided on a pivot shaft section of an arm head. During the retainer rotates, a straight section of the coil spring moves from the gap section to the recess. When the retainer reaches its upright position, the straight section is disposed within the recess. The pivot shaft section includes a projection disposed within the gap section and in contact with the divided pieces, on the both sides of the gap section.

## Claims

### Claim 1

A wiper arm comprising:
an arm head having a pivot shaft section;
an arm body including a pivot shaft hole into which said pivot shaft section is rotatably fit; and
a spring member provided between said arm head and said arm body,
said arm body including a gap section which reaches said pivot shaft hole so that a part of said spring member is disposed within said gap section when said arm body rotates around said pivot shaft section.

### Claim 2 (depends on 1)

The wiper arm according to claim 1, wherein a recess is formed on said pivot shaft section and is disposed at a position corresponding to said gap section so that a part of said spring member is disposed within said recess when said arm body rotates around said pivot shaft section.

### Claim 3 (depends on 1, 2)

The wiper arm according to claim 1 or 2, wherein said arm body includes divided pieces separated by the gap section, and wherein a reinforcing section for reinforcing mechanical strength of said divided pieces is provided between said divided pieces.

### Claim 4 (depends on 3)

The wiper arm according to claim 3, wherein said reinforcing section is disposed within said gap section and is in contact with said divided pieces on the both sides thereof.

### Claim 5 (depends on 4)

The wiper arm according to claim 4, wherein said reinforcing section may be provided on said pivot shaft.

### Claim 6 (depends on 3)

The wiper arm according to claim 3, wherein said reinforcing section is a bridge section connecting said divided pieces, and wherein said bridge section may be provided on said divided pieces so as to face said pivot shaft hole.

### Claim 7 (depends on 3)

The wiper arm according to claim 3, wherein said reinforcing section is provided adjacent to the free ends of said divided pieces.

### Claim 8 (depends on 4)

The wiper arm according to claim 4, wherein said reinforcing section is provided adjacent to the free ends of said divided pieces.

### Claim 9 (depends on 5)

The wiper arm according to claim 5, wherein said reinforcing section is provided adjacent to the free ends of said divided pieces.

### Claim 10 (depends on 6)

The wiper arm according to claim 6, wherein said reinforcing section is provided adjacent to the free ends of said divided pieces.