Provided is an automotive door latch device, including: a latch pushed to rotate by a striker; a latch return spring for biasing the latch toward a return position thereof; a pawl engageable with the latch to inhibit the latch to pivot in a door opening direction (return position); and a pawl return
Provided is an automotive door latch device, including: a latch pushed to rotate by a striker; a latch return spring for biasing the latch toward a return position thereof; a pawl engageable with the latch to inhibit the latch to pivot in a door opening direction (return position); and a pawl return spring for biasing the pawl toward a return position thereof. A housing part of a body, which houses the latch and the pawl, is opened downward at a position below the pawl on one side of the body. The pawl return spring is assembled to a spring mounting part formed on another side of the body at a position spaced downward from a rotational support part of the pawl, and includes a pawl-side end part that engages with the pawl through a through hole provided in the body. Thus, dust or the like entering the housing part of the body, which houses the latch and the pawl, can be discharged out of the body with higher efficiency.
대표청구항▼
1. An automotive door latch device, comprising: a base plate adapted to be assembled to a door;a body comprising a housing part formed on one side thereof, the housing part being covered with the base plate on one side thereof;a latch housed in the housing part of the body and rotatably supported on
1. An automotive door latch device, comprising: a base plate adapted to be assembled to a door;a body comprising a housing part formed on one side thereof, the housing part being covered with the base plate on one side thereof;a latch housed in the housing part of the body and rotatably supported on the base plate via a first support shaft, the latch being adapted to be pushed to rotate by a striker on a vehicle body side;a latch return spring housed in the housing part of the body, for biasing the latch toward a return position thereof;a pawl housed in the housing part of the body at a position below the latch and rotatably supported on the base plate via a second support shaft to rotate about a rotation axis, the pawl being engageable with the latch to inhibit the latch to pivot in a door opening direction;a pawl return spring for biasing the pawl toward a return position of the pawl;wherein the housing part of the body is opened downward at a position below the pawl;wherein the pawl return spring includes a coil part mounted on a spring mounting part formed on another side of the body at a position spaced downward from a rotational support part of the pawl, the coil part possessing a central axis, the pawl return spring comprises a pawl-side end part that enters the housing part of the body through a through hole provided in the body, and engages with the pawl; andthe rotation axis of the pawl being different from the central axis of the coil part. 2. An automotive door latch device according to claim 1, wherein the spring mounting part formed on the body comprises: a retaining part for retaining the coil part; anda lock part engaging with the body-side end part. 3. An automotive door latch device according to claim 1, wherein the through hole has a long hole shape elongated so as to allow movement of the pawl-side end part of the pawl return spring in a movement direction, in which the pawl-side end part moves when the pawl pivots to allow the pivot of the latch, beyond a range in which the pawl-side end part moves when the pawl pivots. 4. An automotive door latch device according to claim 1, wherein the second support shaft that rotatably supports the pawl is made of a metal,wherein the automotive door latch device further comprises a lift lever made of a metal, the lift lever comprising an insertion hole, through which the second support shaft is insertable, the lift lever being assembled to the second support shaft so as to be rotatable integrally with the pawl, andwherein the body is made of a resin, and further comprises an extending part, which extends along the second support shaft and is inserted through the insertion hole of the lift lever so that the extending part is interposed between the lift lever and the second support shaft and rotatably supports the lift lever. 5. An automotive door latch device according to claim 4, wherein the extending part is formed into a cylindrical shape, and surrounds an entire circumference of the second support shaft. 6. An automotive door latch device according to claim 4, wherein the base plate non-rotatably supports the second support shaft on one end side thereof,wherein the automotive door latch device further comprises a sub-base plate, which is assembled on the another side of the body and is positioned by the extending part, the sub-base plate non-rotatably supporting the second support shaft at another end portion thereof,wherein the pawl and the lift lever are rotatably supported on the second support shaft,wherein the body further comprises a support part extending in a circumferential direction from the extending part on the base plate side thereof, andwherein the lift lever is disposed between the support part of the body and the sub-base plate. 7. An automotive door latch device according to claim 4, wherein the lift lever further comprises a projecting part bent toward the pawl to pass through the body,wherein the pawl comprises a depressed part fittable to the projecting part,wherein the body further comprises an opening part that allows passage and rotation of the projecting part, andwherein the projecting part passes through the opening part and is fitted to the depressed part so that the lift lever and the pawl are rotatable integrally with each other. 8. An automotive door latch device according to claim 1, wherein the pawl further comprises an engagement projecting part, andwherein the automotive door latch device further comprises a stopper mounted to the body so as to be arranged above the engagement projecting part, the stopper abutting against the engagement projecting part to define the return position of the pawl. 9. An automotive door latch device, comprising: a base plate adapted to be assembled to a door;a body comprising a wall with a housing part located on one side of the wall, the base plate covering the housing part;the wall including a through hole passing through the wall from the one side of the wall to an opposite side of the wall that is opposite the one side;a latch housed in the housing part on the one side of the wall and rotatably supported on a first support shaft, the latch being adapted to be pushed to rotate by a striker on a vehicle body side;a latch return spring housed in the housing part on the one side of the wall, the latch return spring including one end portion engaging the latch and biasing the latch toward a return position of the latch;a pawl housed in the housing part on the one side of the wall and rotatably supported on a second support shaft spaced from the first support shaft to rotate about a rotation axis, the pawl being engageable with the latch to inhibit the latch from pivoting in a door opening direction;a pawl return spring that includes a coil part possessing a central axis, a first end part and a second end part;the coil part of the pawl return spring being mounted on a spring mounting part positioned on the opposite side of the wall so that the coil part is on the opposite side of the wall;the first end part of the pawl return spring passing through the through hole so that the first end part is positioned on the one side of the wall and engages the pawl to bias the pawl toward a return position; andthe rotation axis of the pawl being different from the central axis of the coil part. 10. An automotive door latch device according to claim 9, wherein the spring mounting part on the body comprises a projecting shaft positioned inside the coil part and an arc-shaped wall part spaced from the projecting shaft so that a space exists between an outer surface of the projecting shaft and an inner surface of the arc-shaped wall part, the coil part of the pawl return spring being positioned in the space. 11. An automotive door latch device according to claim 10, wherein the spring mounting part further comprises a lock part extending from the arc-shaped wall part and engaging the second end part of the pawl return spring. 12. An automotive door latch device according to claim 9, wherein the through hole passing through the wall possesses an elongated shape to allow movement of the first end part of the pawl return spring in a movement direction, in which the first end part moves when the pawl pivots to allow pivoting of the latch, beyond a range in which the first end part moves when the pawl pivots. 13. An automotive door latch device according to claim 9, wherein the second support shaft that rotatably supports the pawl is made of metal, and further comprising a lift lever made of metal, the lift lever comprising an insertion hole through which the second support shaft extends, the lift lever being assembled on the second support shaft and being rotatable together with the pawl. 14. An automotive door latch device according to claim 13, further comprising an extending part, which extends along and surrounds the second support shaft and passes through the insertion hole of the lift lever so that the extending part is interposed between the lift lever and the second support shaft and rotatably supports the lift lever. 15. An automotive door latch device according to claim 14, wherein the extending part is cylindrically shaped, and surrounds an entire circumference of the second support shaft along one axial portion of the second support shaft. 16. An automotive door latch device according to claim 9, further comprising a lift lever provided with an insertion hole through which the second support shaft extends so that the lift lever is rotatably supported on the second support shaft. 17. An automotive door latch device according to claim 9, further comprising a lift lever provided with an insertion hole through which the second support shaft extends, the lift lever further comprising a projecting part bent toward the pawl and passing through an opening in the body, the pawl comprising a depressed part fitted to the projecting part, the body further comprising an opening through which the projecting part passes and is fitted to the depressed part so that the lift lever and the pawl rotate integrally with each other. 18. An automotive door latch device according to claim 9, the pawl comprising an engagement projecting part against which abuts a stopper mounted to the body to define the return position of the pawl.
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이 특허에 인용된 특허 (6)
Hamada Yoshikazu,JPX, Latch member of vehicle door latch device.
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