Joint apparatus of a car windshield wiper arm

• US 7,353,562 B2
• Filed: 09/25/2006
• Issued: 04/08/2008
• Est. Priority Date: 09/25/2005
• Status: Expired due to Fees

• Current Assignee: Shih-Hsien Huang
• Original Assignee: Shih-Hsien Huang
• Inventors: Huang, Shih-Hsien
• Primary Examiner(s): Graham; Gary K
• Application Number:
  US11/525,831
• Publication Number:
  US 20070067940A1
• Time in Patent Office: 561 Days
• Field of Search: 152/503.2, 152/504.3, 152/504.4, 152/503.61
• US Class Current: 15/250.32
• CPC Class Codes: B60S 1/3848 Flat-type wiper blade, i.e. without harness
• CPC Class Codes: B60S 1/3867 pin formed on the interior of side walls
• CPC Class Codes: B60S 1/40 Connections between blades and arms
• CPC Class Codes: B60S 1/407 with means provided on the arm for locking the side pin
• CPC Class Codes: B60S 1/4077 characterised by the connecting part of, or an intermediate element mounted on, the wiper blade means for locking the side pin B60S1/4074

Abstract

The present invention is to provide a joint apparatus of car windshield wiper arm, which comprises a upper cover body and a chassis; wherein said upper cover body having a round groove cut with V-shaped cross-section is concaved near the bottom side of the front side; a guiding gap is concaved between said front top surface and said rear top surface; a horizontal round groove receptacle and a vertical hollow socket are respectively created at said guiding gap; a horizontal elastic embed hook is built at the center between said rear side; and said chassis having a pair of parallel and symmetrical left plate and right plate are upwards built at the front section, and a horizontal fixing pivot is bridged near the front end; an upright curbing plate is upwards formed in the middle section of the bottom plate; a insetting hole is perforated at the center of the rear plate. By means of the round groove cut of the upper cover body and the fixing pivot on the chassis being intimately engaged each other to serve as a pivot, as well as the horizontal elastic embed hook of the upper cover body and the insetting hole on the chassis being inset each other respectively, thus, the insetting securely in rigging assembly or the dismantling in replacement of wiper arm with curbing head to or from between the joint apparatus of the wiper can be quickly accomplished.

Claims

1. A joint apparatus of car windshield wiper arm, comprising:

an upper cover body, which comprises a front top surface, a rear top surface, a front side, a left side, a right side and a rear side, wherein a guiding gap, which is concaved between said front top surface and said rear top surface, has a adjacent round groove receptacle indented at its bottom portion towards said front top surface;

said front side and said front top surface joint internally together to make a solid core inside;

a distance exists between both sides upright of a bottom side of said core and said left side as well as said right side for creating a left groove cut and a right groove cut, respectively;

a round groove cut with V-shaped cross-section is concaved near said front side;

a back-end face is upwards created by extending the bottom side of said core backwards some distance then bending vertical up in junction with the bottom section of said guiding gap;

an erecting face is formed at a center in a front edge joint of said rear top surface and said guiding gap, so that the space between said erecting face and said back-end face of said core encompasses a hollow socket at the central bottom of said guiding gap;

said left side and said right side joint with said rear side respectively, and an erecting hollow groove is indented inside of said rear side, wherein a horizontal elastic embed hook is built at the center between said rear side and said erecting hollow groove, and a horizontal insetting nose is raised at a central wall of said erecting hollow groove; and

a chassis having a bottom plate, a left plate, a right plate and a rear plate;

wherein, a fixing hole is perforated at the center of said bottom plate;

a pair of parallel and symmetrical inset clips is concaved between said fixing hole and front edge of said bottom plate;

said left plate and right plate are extending upwards at both sides of said bottom plate in parallel and symmetrical pair;

an upright curbing plate is formed by bending the rear end of said bottom plate upwards;

a horizontal fixing pivot is bridged between said left plate and said right plate near the front end;

an upright hollow plug is encompassed by extending middle section of said left plate and said right plate backwards in joint with said rear plate; and

an insetting hole is perforated at the center of said rear plate.