VEHICLE DOOR LATCH DEVICE

• US 20180313119A1
• Filed: 04/11/2018
• Published: 11/01/2018
• Est. Priority Date: 04/29/2017
• Status: Active Grant

• Current Assignee: Mitsui Kinzoku Act Corporation (Mitsui Mining & Smelting Co., Ltd.)
• Original Assignee: Mitsui Kinzoku Act Corporation (Mitsui Mining & Smelting Co., Ltd.)
• Inventors: TAGA, Takao
• Granted Patent: US 11,299,917 B2
• Time in Patent Office: Days
• CPC Class Codes: E05B 2015/0493 Overcenter springs
• CPC Class Codes: E05B 77/265 hand actuated, e.g. by a lever at the edge of the door

Abstract

An over-center spring of a vehicle door latch device has a coil part that is loosely inserted on a spring support shaft, and a base end side spring leg part. A leading end side spring leg part elastically holds an abutting pin and is paired with the base end side spring leg part. A lock lever is provided with a slot through which the spring support shaft passes. The lock lever and the spring support shaft are disposed to be superposed on each other in an axial direction of the spring support shaft.

Claims

1. A vehicle door latch device comprising:

a lock lever that is pivotably secured to a housing case with a lock shaft;

an abutting pin that is provided in said lock lever;

a spring support shaft that is provided in said housing case; and

an over-center spring having a coil part that is loosely inserted on said spring support shaft, and a base end side spring leg part and a leading end side spring leg part that extend in a direction away from said coil part, elastically hold said abutting pin therebetween, and are paired, wherein

said lock lever is provided with a slot through which said spring support shaft passes, and

said lock lever and said spring support shaft are disposed to be superposed on each other in an axial direction of said spring support shaft.

7. The vehicle door latch device according to claim 1, wherein

said slot is formed in an arc shape with said lock shaft as a center.

8. The vehicle door latch device according to claim 1, wherein

a child lever that is switched between a childproof set position and a childproof unset position is pivotably secured to said lock shaft.

2. A vehicle door latch device comprising:

a lock lever that is pivotably secured to a housing case with a lock shaft;

an abutting pin that is provided in said lock lever;

a spring support shaft that is provided in said housing case; and

an over-center spring having a coil part that is loosely inserted on said spring support shaft, and a base end side spring leg part and a leading end side spring leg part that extend in a direction away from said coil part, elastically hold said abutting pin therebetween, and are paired, wherein

said spring support shaft is provided with at least one spring abutting rib that is brought into abutment against the base end side of said coil part to thereby restrict movement toward a base end side of said coil part, and

said abutting pin is provided with a locking flange that is brought into abutment against said leading end side spring leg part extending from a leading end side of said coil part to thereby restrict movement of said leading end side spring leg part in a leading end side direction of said coil part.

3. The vehicle door latch device according to claim 2, wherein

said lock lever is provided with a projection that faces said base end side spring leg part extending from the base end side of said coil part, and a leading end of said projection is located on a front side with respect to a leading end of said at least one spring abutting rib.

4. The vehicle door latch device according to claim 2, wherein

said lock lever is provided with a slot through which said spring support shaft passes, and

said lock lever and said spring support shaft are disposed to be superposed on each other in an axial direction of said spring support shaft.

5. The vehicle door latch device according to claim 2, wherein

said spring abutting ribs are paired, and are formed at an interval in a circumferential direction of said spring support shaft.

6. The vehicle door latch device according to claim 3, wherein

said lock lever is provided with a slot through which said spring support shaft passes, and

said lock lever and said spring support shaft are disposed to be superposed on each other in an axial direction of said spring support shaft.