Door lock device and assembling method thereof
AssigneeMitsui Mining & Smelting Co., Ltd.
InventorsMasakatsu Yoshikuwa, Takao Taga
Life of this patent
Estimating the term…
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.
Claims2
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, wherein
- the ratchet shaft includes, at its base end with a flange collar
- a first stepped portion that supports the ratchet lever to be rotatable;
- and
- a 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.
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;
- and
- caulking ends of the latch shaft and ratchet shaft to the cover plate from outside.
Dependencies are inferred from the claim text.