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US 7,478,846 B2Granted
Door lock device and assembling method thereof
AssigneeMitsui Mining & Smelting Co., Ltd.
InventorsMasakatsu Yoshikuwa, Takao Taga
Life of this patent
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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 structure including:
- a housing having an opening on one side of the housing configured to accommodate a latch supported by a latch shaft penetrating through the structure;
- a ratchet supported by a ratchet shaft penetrating through the structure, the ratchet shaft having a flange collar at a base end of the ratchet shaft;
- a cover plate configured to cover the opening;
- a base plate on another side of the housing such that the housing is sandwiched between the base plate and the cover plate;
- and
- a ratchet lever supported by the ratchet shaft and configured to rotate integrally with the ratchet,
- wherein the ratchet shaft includes a first stepped portion having a first end next to the base end, and a second end, the first stepped portion rotatably supporting the ratchet lever;
- and
- a second stepped portion receiving a thickness of the base plate, with the base plate contacting the second end of the first stepped portion, the second stepped portion having a diameter different than the first stepped portion, and the second stepped portion is configured to be caulked to the base plate with the first stepped portion through the ratchet lever and the second stepped portion through the base plate.
7 more elements
Dependencies are inferred from the claim text.