Abstract: In a vehicle door latch device, a latch engages with a striker of a vehicle body and a ratchet engages with the latch, so that a vehicle door is closed, and an inside operating lever and a childproof lock mechanism are disposed between a cover and a casing. To connect the childproof lock mechanism to the casing, the inside operating lever is held in an assembling position and the childproof lock mechanism is held in its locking state or in its unlocking state. The cover has a covering portion over a broader portion of a hole in the cover.

Abstract: A vehicle door latch device which efficiently performs connecting a motion-transmitting member to an operating lever and attaching an auxiliary cover to a housing simultaneously from one direction is provided. The auxiliary cover comprises a holding portion which is capable of holding the motion-transmitting members to the side facing a coupling area; and positioning mechanism which can position coupling portions of the motion-transmitting member. Without fixing the auxiliary cover to the coupling area, the motion-transmitting members are held by the holding portion. The coupling portions are positioned by the positioning mechanism. By fixing the auxiliary cover to the coupling area, the coupling portions can be coupled to coupled portions of the operating levers which are stationary at a predetermined position.

Abstract: A vehicle door latch device which comprises a body having a holding portion, an engagement member pivotally mounted in the holding portion, a cover member closing an opening of the holding portion, and a shaft comprising a shank which passes through a bearing hole of the body and a shank hole of the engagement member, a retaining head and a smaller-diameter shank. The shank passes through the shank hole of the engagement member and the smaller-diameter shank is pressingly fitted in the shank hole of the cover member without swaging the end of the smaller-diameter shank thereby assembling the vehicle door latch device more efficiently.

Abstract: A vehicle door latch device has latch shaft and a back plate. The back plate has a rear-side second shaft hole forming portion that forms a rear-side second shaft hole, into which a second shaft portion, which is formed at another end portion of a pawl, is inserted rotatably, and a threaded hole forming portion, which is disposed near the rear side second shaft hole forming portion, and which forms a single threaded hole into which a single bolt is screwed. The back plate is shaped so as not to extend to portions corresponding to positions of other bolts.

Abstract: A vehicle door latch device includes: an interlocking unit assembly including an interlocking mechanism configured to hold the door in a closed position by engaging with a striker; and an operating unit assembly including an operating mechanism configured to switch over the door between a locked state and an unlocked state. The interlocking unit assembly includes a body having a striker advancing groove. The operating unit assembly includes: a casing, in which the interlocking unit assembly is fitted, and in which the operating mechanism is installed; a lock lever configured to move the door to a locked position where the door is in the locked state and an unlocked position where the door is in the unlocked state; an emergency operating member turnably supported by the body of the interlocking unit assembly about an axis; and a slide lever slidably installed in the casing.

Abstract: A door latch device for a vehicle includes: a body having a striker advancing groove formed on one surface thereof through which a striker arranged on a vehicle body advances corresponding to a closing movement of the door; a latch configured to engage with the advanced striker to be rotatable; a pole configured to rotate interlocking with the rotation of the latch and engaged with the latch so as to restrain the door at a closed position; a lever configured to rotate based on an opening operation of a handle arranged on the door to rotate the interlocking pole; and a spring configured to urge the lever. The lever has a shaft hole. The body includes a spring accommodating part that accommodates the spring, and a pivot that is inserted to the shaft hole of the lever to rotatably support the lever.

Abstract: A vehicle door latch device includes: a body includes a striker advancing groove into which a striker advances along with closing movement of the door; a latch configured to interlock with the advanced striker so as to be rotatable from an open position to a latched position; a pole configured to be biased to rotate, in a direction towards an engaged position where the pole is engageable with the latch in the latched position from a released position where engagement with the latch is canceled, and restrain the door in a closed position by rotating from the engaged position to the released position in conjunction with rotation of the latch, rotating from the released position to the engaged position by biasing force, and engaging with the latch; and a buffer that is made of an elastic member.

Abstract: A vehicle door latch device includes: a body which is provided in one of a door of a vehicle or a vehicle body, a striker advancing groove being formed on one surface of the body; a latch configured to be meshed with the advanced striker to hold the door at a closed position; a cover plate installed on the surface of the body on which the striker advancing groove is formed; and a back plate fixed to the cover plate with the body placed therebetween. One of the cover plate or the back plate includes a projected part which is projected in an inside-outside direction of the vehicle. Other one of the cover plate or the back plate includes an engagement hole into which the projected part advances.

Abstract: a door latch device for a vehicle includes: a body having a striker advancing groove formed on one surface thereof through which a striker arranged on a vehicle body advances corresponding to a closing movement of the door; a latch configured to engage with the advanced striker to be rotatable; a pole configured to rotate interlocking with the rotation of the latch and engaged with the latch so as to restrain the door at a closed position; a lever configured to rotate based on an opening operation of a handle arranged on the door to rotate the interlocking pole; and a spring configured to urge the lever. The lever has a shaft hole. The body includes a spring accommodating part that accommodates the spring, and a pivot that is inserted to the shaft hole of the lever to rotatably support the lever.

Abstract: A vehicle door latch device comprises an engagement assembly comprising an engagement mechanism which is engagable with a striker of a vehicle body; a first casing which can be connected from one direction to an operating mechanism which can turn to a locking state and an unlocking state; an operating assembly comprising a second casing to which the engagement assembly is attached; an outside lever pivotally supported on the engagement assembly; and positioning-guide means by which the engagement assembly can be connected from the same direction as a direction in which the operating mechanism is connected to the first casing, thereby improving assembling efficiency and getting smaller.

Abstract: When a worm wheel is in a first stop position a locking surface of a first projecting portion and a locking surface of a second projecting portion, which is provided back to a pressing surface of a first projecting portion adjacent to the locking surface of the first projecting portion, are situated along concentric arc-shaped rotational loci of the rotational end faces of a first engagement arm and a second engagement arm, while when the worm wheel is in a second stop position a locking surface of the second projecting portion and the locking surface of the first projecting portion, which is provided back to a pressing surface of the second projecting portion adjacent to the locking surface, are situated along the concentric arc-shaped rotational loci of the rotational end faces of the first engagement arm and the second engagement arm.

Abstract: A vehicle door latch device configured so that the pivoting of a gear which is performed by motor drive reliably moves a lock lever to a lock position and an unlock position. When a lock lever is at a lock position, if a worm wheel is rotated in one direction by a motor, a first engagement protrusion section makes contact with a first engagement arm in the direction of the pivoting thereof, the lock lever is pivoted to an unlock position, and after that, a second engagement protrusion section makes contact with a pivoting end section of a second engagement arm to cause the worm wheel to stop at a first stop position.

Abstract: When a worm wheel is in a first stop position a locking surface of a first projecting portion and a locking surface of a second projecting portion, which is provided back to a pressing surface of a first projecting portion adjacent to the locking surface of the first projecting portion, are situated along concentric arc-shaped rotational loci of the rotational end faces of a first engagement arm and a second engagement arm, while when the worm wheel is in a second stop position a locking surface of the second projecting portion and the locking surface of the first projecting portion, which is provided back to a pressing surface of the second projecting portion adjacent to the locking surface, are situated along the concentric arc-shaped rotational loci of the rotational end faces of the first engagement arm and the second engagement arm.

Abstract: A latch device for a vehicle includes: a latch configured to hold and engage with a striker; and a latchet configured to maintain an engagement condition between the striker and the latch by meshing with the latch. Between a meshing surface of the latch and a meshing surface of the latchet that mesh with each other, one meshing surface is formed narrower than the other meshing surface. A supporting member is arranged at a side of the latch or the latchet having the one meshing surface narrower than the other meshing surface with a gap provided between a side face of the latch or the latchet and the supporting member. A periphery of the supporting member including the end face is covered with a resin material and the gap is filled up with the resin material.

Abstract: A vehicle door latch device which comprises a body having a holding portion, an engagement member pivotally mounted in the holding portion, a cover member closing an opening of the holding portion, and a shaft comprising a shank which passes through a bearing hole of the body and a shank hole of the engagement member, a retaining head and a smaller-diameter shank. The shank passes through the shank hole of the engagement member and the smaller-diameter shank is pressingly fitted in the shank hole of the cover member without swaging the end of the smaller-diameter shank thereby assembling the vehicle door latch device more efficiently.

Abstract: In a vehicle door latch device, a first outside lever is pivotally mounted via a pivot shaft, and second outside lever is connected to an outside handle on an outer panel of a door via a motion-transmitting member to move toward the inside of a vehicle. Usually, turning of the second outside lever for disengaging a latch from a striker is transmitted to the first outside lever. If the second outside lever is impacted by an external force, the outer panel is deformed to move the second outside lever inward of the vehicle with respect to the first outside lever. But release turning of the second outside lever cannot be transmitted to the first outside lever. Even if the door is deformed by the external force, the door is still closed.

Abstract: In a vehicle door latch device, a latch engages with a striker of a vehicle body and a ratchet engages with the latch, so that a vehicle door is closed, and an inside operating lever and a childproof lock mechanism are disposed between a cover and a casing. To connect the childproof lock mechanism to the casing, the inside operating lever is held in an assembling position and the childproof lock mechanism is held in its locking state or in its unlocking state. The cover has a covering portion over a broader portion of a hole in the cover.

Abstract: A child lever includes an operation portion, which is supported slidably and rotatably on a cover fixed to a casing, and which passes through a panel hole provided in a door to be exposed to the outside. The child lever is allowed to move to an unlocking position, in which the child lever is allowed to rotate together with an inside lever so as to transmit rotation of the inside lever to an opening member, and a locking position, in which the child lever is not allowed to rotate together with the inside lever so as not to transmit rotation of the inside lever to the opening member.

Abstract: In a vehicle door, a latch engages with a striker and a ratchet engages with the latch, so that the door is closed. In a vehicle door latch device, an inside operating lever and a childproof lock mechanism are disposed between a cover and a casing. To connect the childproof lock mechanism to the casing, the inside operating lever is held in an assembling position and the childproof lock mechanism is held in its locking state or in its unlocking state.

Abstract: A latch device for a vehicle includes: a latch configured to hold and engage with a striker; and a latchet configured to maintain an engagement condition between the striker and the latch by meshing with the latch. Between a meshing surface of the latch and a meshing surface of the latchet that mesh with each other, one meshing surface is formed narrower than the other meshing surface. A supporting member is arranged at a side of the latch or the latchet having the one meshing surface narrower than the other meshing surface with a gap provided between a side face of the latch or the latchet and the supporting member. A periphery of the supporting member including the end face is covered with a resin material and the gap is filled up with the resin material.