Vehicle door latch device
A door latch and latch technology, which is applied in vehicle locks, electric vehicle locks, building locks, etc., can solve the problem of a considerable reduction in the release operating force, and achieve the effect of easy return
Active Publication Date: 2020-08-21
MITSUI KINZOKU ACT
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, this resistance is much lower than the resistance to the release operation force in the conventional device, that is, the resistance caused by the friction force generated by the latch and the pawl crimping or the elastic force of the pawl spring, and accordingly, the release operation The force can also be reduced considerably
Method used
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[0054] The above-mentioned and other objects, features, and advantages of the present application will become clear from the following detailed description with reference to the attached drawings illustrating the present application.
[0055] This embodiment (one embodiment of the present invention) will be described based on the drawings. figure 1 The front of the vehicle door latch device 10 in an unlocked state (door open state) is shown. A latch 13 is pivotally fixed to a base plate 11 of the vehicle door latch device 10 via a latch shaft 12 . The latch 13 is biased in a door opening direction (unlocking direction / counterclockwise rotation direction) by a latch spring 14 (illustration based on an arrow indicating a spring force direction). Usually, the base plate 11 is fixed to a vehicle door (not shown).
[0056] The pawl member 15 is pivotally fixed to the lower side of the bottom plate 11 by a pawl shaft 16 . The pawl member 15 is biased in the latch engaging direct...
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The vehicle door latch device according to the present invention is provided with: a latch that is rotatable from an unlatched position to a fully latched excessive rotation position by engaging witha striker; a ratchet member that is locked by a ratchet shaft, that has a pawl portion for allowing shift between a latch engagement position where the ratchet member can face a full latch engagementportion of the latch and a latch disengagement position where the ratchet member is not engaged with the full latch engagement portion, and that is pushed out from the latch engagement position to thelatch disengagement position by a release component force, in a latch disengagement direction, generated in association with application of a latch returning force in an unlatch direction while the ratchet member is in the latch engagement position; and a ratchet retainer that is disposed on a lateral side of the ratchet member and that can be shifted, about a pin, between a block position for abutting against the ratchet member so as to restrict shift of the ratchet member from the latch engagement position to the latch disengagement position due to the release component force and a releaseposition for separating away from the ratchet member so as to allow shift of the ratchet member from the latch engagement position to the latch disengagement position, wherein the ratchet member has apawl lever that, in a state where the ratchet retainer is in the blocked position, can separate away from the full latch engagement portion by turning around a coupling shaft toward the latch disengagement direction.
Description
technical field [0001] This application is based on Japanese Patent Application No. 2017-248491 with a filing date of December 25, 2017, and claims priority based on this application. The entirety of this application is incorporated in this application by reference. [0002] The present invention relates to a vehicle door latch. In particular, the present invention relates to a vehicle door latch that reduces the release operating force required to disengage a pawl from the latch. Background technique [0003] A conventional typical vehicle door latch device engages a pawl with a latch that rotates from an unlocked position to a fully locked position to prevent the unlocking rotation of the latch, thereby maintaining the vehicle door in a closed state (fully locked state). Moreover, the vehicle door latch device rotates the pawl in the latch disengaging direction (the direction opposite to the latch engaging direction) by the manual release operation force from the door op...
Claims
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IPC IPC(8): E05B85/26
CPCE05B85/26E05B81/42E05B81/14E05B83/36E05B85/243
Inventor 石黑克行西岛广隆觉前卓也大川慎太郎芜木诚
Owner MITSUI KINZOKU ACT