Door lock device and assembling method thereof

Abstract

A ratchet shaft is mounted on the base plate beforehand. The ratchet shaft includes, at its base end with a flange collar, a first stepped portion that supports a ratchet lever to be rotatable, and a second stepped portion that receives the thickness of a base plate at the front end of the first stepped portion. The second stepped portion is caulked to the base plate with the ratchet lever resting on the first stepped portion and the base plate resting on the second stepped portion.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a door lock device according to an embodiment of the present invention;

FIG. 2 is a rear view of the door lock device;

FIG. 3 is a left side view of the door lock device;

FIG. 4 is a right side view of the door lock device;

FIG. 5 is a schematic for explaining the operation of a latch mechanism;

FIG. 6 is another schematic for explaining the operation of the latch mechanism;

FIG. 7 is yet another schematic for explaining the operation of the latch mechanism;

FIG. 8 is a front view of the door lock device for explaining operation to release the latch the latch mechanism.

FIG. 9 is a front view of the door lock device for explaining a locked state of a lock mechanism;

FIG. 10 is a front view of the door lock device for explaining the locked state of the lock mechanism;

FIG. 11 is an exploded perspective view of the door lock device;

FIG. 12 is another exploded perspective view of the door lock device;

FIG. 13 is a perspective view of a base plate shown in FIG. 1;

FIG. 14 is a perspective view of a lock lever shown in FIG. 1;

FIG. 15 is another perspective view of the lock lever;

FIG. 16 is a perspective view of a key lever;

FIG. 17 is a perspective view of a link lever shown in FIG. 1;

FIG. 18 is another perspective view of the link lever;

FIGS. 19A and 19B are schematics for explaining an assembly of a ratchet shaft shown in FIG. 1;

FIGS. 20A and 20B are schematics for explaining an assembly of the lock lever and the key lever;

FIGS. 21A, 21B and 21C are schematics for explaining an assembly of the lock lever and the base plate;

FIG. 22 is a schematic for explaining an assembly of the base plate and an actuator shown in FIG. 1;

FIG. 23 is another schematic for explaining the assembly of the base plate and the actuator; and

FIG. 24 is yet another schematic for explaining the assembly of the base plate and the actuator.

Claims

1. A door lock device comprising: a housing that accommodates a latch and a ratchet, and includes a first surface with an opening and a second surface, the housing being sandwiched between a cover plate that covers the opening and a base plate on the second surface;a latch shaft that supports the latch;a ratchet shaft that supports the ratchet;a ratchet lever that is supported by the ratchet shaft outside the base plate, while passing through the latch shaft and the ratchet shaft, and moves integrally with the ratchet, whereinthe ratchet shaft includes, at its base end with a flange collar a first stepped portion that supports the ratchet lever to be rotatable; anda second stepped portion that receives a thickness of the base plate at an end of the first stepped portion,the second stepped portion is caulked to the base plate with the ratchet lever resting on the first stepped portion and the base plate resting on the second stepped portion.

2. An assembling method of a door lock device that accommodates a latch supported by a latch shaft and a ratchet supported by a ratchet shaft in a housing including a first surface with an opening and a second surface, and is sandwiched between a cover plate that covers the opening and a base plate on the second surface, in which a ratchet lever is supported by the ratchet shaft outside the base plate, while passing through the latch shaft and the ratchet shaft, and moves integrally with the ratchet, the assembling method comprising: engaging the base plate with the ratchet shaft that supports the ratchet lever to be rotatable;caulking the ratchet shaft to the base plate;engaging the base plate with the latch shaft facing in the same direction as the ratchet shaft;arranging the housing along with the base plate to accommodate the latch shaft and the ratchet shaft;engaging the latch and the ratchet with the latch shaft and the ratchet shaft, respectively;covering the opening with the cover plate; andcaulking ends of the latch shaft and ratchet shaft to the cover plate from outside.