Wiper system

• US 8,020,248 B2
• Filed: 06/28/2007
• Issued: 09/20/2011
• Est. Priority Date: 07/10/2006
• Status: Expired due to Fees

• Current Assignee: ASMO Company Limited (DENSO Corporation)
• Original Assignee: ASMO Company Limited (DENSO Corporation)
• Inventors: Hasegawa, Takashi
• Primary Examiner(s): GRAHAM, GARY K
• Application Number:
  US11/819,553
• Publication Number:
  US 20080005863A1
• Time in Patent Office: 1,545 Days
• Field of Search: 152/501.9, 152/501.6, 152/503.61, 152/503.51, 152/501.7, 152/502.7, 152/503, 152/501.4, 152/502.1, 296/192, 296/96.15, 296/96.17
• US Class Current: 15/250.351
• CPC Class Codes: B60S 1/0452 Position of the wipers relative to the vehicle
• CPC Class Codes: B60S 1/0463 Arrangement of the cowl
• CPC Class Codes: B60S 1/0491 Additional elements being fixed on wipers or parts of wipers not otherwise provided for, e.g. covers, antennae or lights
• CPC Class Codes: B60S 1/0814 using several drive motors; motor synchronisation circuits
• CPC Class Codes: B60S 1/245 with particular rod arrangements between the motor driven axle and the wiper arm axle

Abstract

Wiper blades are connected to wiper arms, respectively, to wipe a wiping surface of a vehicle front window glass. One of the wiper arms includes a cover portion, which at least partially covers at least one of the other wiper arm and the wiper blade connected thereto to continuously arrange the wiper arms one after the other along a lower edge of the wiping surface when each of the wiper blades is placed in a corresponding storage position thereof.

Claims

1. A wiper system comprising:

first and second wiper arms; and

first and second wiper blades that are connected to the first and second wiper arms, respectively, to wipe a wiping surface, wherein the first wiper arm includes a cover portion, which at least partially covers at least one of the second wiper arm and the second wiper blade to continuously arrange the first and the second wiper arms one after the other along a lower edge of the wiping surface when each of the first and second wiper blades is placed in a corresponding stop position thereof, wherein

the first and second wiper arms are respectively swung from the stop position of the corresponding wiper blade in a common direction,

the cover portion of the first wiper arm forms a distal end portion of the first wiper arm, which is overlapped with a base end portion of the second wiper arm in a height direction of the cover portion of the first wiper arm to form an overlapped section when each of the first and second wiper blades is placed in the corresponding stop position,

the overlapped section is configured such that a top surface of the first wiper arm is generally flush with a top surface of the second wiper arm in the overlapped section when each of the first and second wiper blades is placed in the corresponding stop position,

the first and second wiper arms have opposed surfaces, respectively, which are opposed to each other in the longitudinal direction and are tilted relative to the longitudinal direction of each of the first and second wiper arms when each of the first and second wiper blades is placed in the corresponding stop position,

the opposed surface of the first wiper arm has an undercut shape, which is undercut in a wiping movement start direction of each of the first and second wiper arms, and

the opposed surface of the second wiper arm has an uppercut shape, which is uppercut in the wiping movement start direction of each of the first and second wiper arms.

2. The wiper system according to claim 1, wherein:

the first wiper arm includes;

an arm head that is fixed to a first pivot shaft; and

an arm member that is rotatably connected to the arm head of the first wiper arm and includes the cover portion of the first wiper arm;

the second wiper arm includes;

an arm head that is fixed to a second pivot shaft; and

an arm member that is rotatably connected to the arm head of the second wiper arm; and

the arm member of the first wiper arm is overlapped with the arm head of the second wiper arm to form the overlapped section.

3. The wiper system according to claim 1, wherein the first wiper blade is placed on a wiping movement start direction side of the first wiper arm generally in parallel with the first wiper arm at the stop position of the first wiper blade.

4. The wiper system according to claim 1, wherein:

the stop position of each of the first and second wiper blades is a storage position of the wiper blade, which is set separately from a lower swing movement turning position of the wiper blade; and

the first wiper arm is overlapped with the second wiper arm at the overlapped section when each of the first and second wiper blades is placed in the corresponding storage position.