JP2020023814A - Vehicle door latch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a first outer lever and a second outer lever in a vehicle door latch device, and even if a force for releasing and rotating the second outer lever acts due to a collision accident or the like, a second outer Prevent the lever from releasing and rotating. When a door receives an impact force from one direction, a second outer lever 11 has a center of gravity G2 that exerts a force in a counterclockwise release direction on the second outer lever 11 at an initial position. The first outer lever 10 has a center of gravity G1 that exerts a force in the counterclockwise direction opposite to the release rotation on the first outer lever 10 at the initial position, and acts on the second outer lever 11. The force of the release rotation is canceled by the force in the direction opposite to the release rotation acting on the first outer lever 10. [Selection diagram] Fig. 9

Description

  The present invention relates to a vehicle door latch device arranged in a vehicle door.

  The vehicle door latch device includes a latch that can be engaged with the striker on the vehicle body side when the door is closed, a pole that can hold the door in the closed position by engaging with the latch, and a release mechanism that can release the pole. .

  For example, a release mechanism of a vehicle door latch device described in Patent Literature 1 is pivotally supported by a first shaft, and is connected to an outer handle provided outside the door via an operation force transmitting member (rod). A second outer lever pivotally supported by a second shaft, one end of which is connected to the first outer lever, and the other end of which is indirectly connected to an inner handle provided inside the door. And

  The connection between the first outer lever and the second outer lever enables the release rotation of the first outer lever by the opening operation of the outer handle to be transmitted to the second outer lever, but the second outer lever by the opening operation of the inner handle. The opening of the inner handle is prevented from being transmitted to the outer handle by using a one-way transmission structure in which the release rotation of the lever cannot be transmitted to the first outer lever.

  Further, in the vehicle door latch device, various measures are taken so that the release mechanism does not release even if an impact is applied to the door due to a vehicle collision or the like.

JP 2017-197919 A

  However, in the vehicle door latch device described in Patent Literature 1, when the door is deformed inward due to an impact from the outside of the vehicle due to a side collision or the like, a force for releasing and rotating the first outer lever. , The distal end of the first outer lever engages with the stiffener provided in the door in the release direction, so that the release rotation of the first outer lever can be prevented. However, when the tip of the first outer lever does not engage with the stiffener, the first outer lever is released and rotated, and the rotation also rotates the second outer lever in the released direction, thereby finally releasing the pole. Then, the door may be opened.

  Further, when an impact is received from the inside of the vehicle, the force for releasing and rotating is hardly applied to the first outer lever, but the force for releasing and rotating is applied to the second outer lever interlocked with the opening operation of the inner handle. It is likely to work.

  As described above, when the force for releasing and rotating acts on the second outer lever, in the structure in which the first outer lever and the second outer lever are connected in the one-way connection structure as described above, the first outer lever is The second outer lever may be independently released and rotated while maintaining the initial position, and the rotational motion may be transmitted to the pole.

  The present invention has been made in view of the above-described problems, and in a configuration including a first outer lever and a second outer lever, even if a force to release and rotate the second outer lever acts on the second outer lever due to a collision accident or the like, the second outer lever is provided. It is an object of the present invention to provide a vehicle door latch device in which a lever does not release and rotate.

  In order to solve the above-mentioned problem, the present invention provides a latch that engages with a striker on a vehicle body side when a door is closed, and holds the engagement between the latch and the striker, and rotates the latch and the striker by rotating in a release direction. And a release mechanism rotatable in the release direction, wherein the release mechanism is pivotally supported by a first shaft and is disposed outside the door. A first outer lever rotatable by an opening operation of the outer handle, a first outer lever rotatable by an opening operation of the outer handle, and a second shaft that is pivotally supported by the second shaft. (1) An inner handle disposed on the vehicle interior side of the door by allowing the release rotation to be transmitted to the pawl by releasing and rotating in conjunction with the outer lever. A second outer lever connected to the first outer lever so as to release and rotate the first outer lever when the opening operation is performed, and the door applies an impact force from a vehicle interior direction. When received, the first outer lever has a center of gravity for applying a force in the counter-release direction at the initial position, and the second outer lever has a center of gravity for applying a force in the release direction at the initial position. It is characterized by.

  Preferably, the second axis is located at a position separated from the first axis in a direction orthogonal to the axial direction, and the position of the center of gravity of the first outer lever is in a state where the first outer lever is at an initial position, It is located in the third quadrant of the first to fourth quadrants of the two-dimensional coordinates with the center of the first axis as the origin, and the position of the center of gravity of the second outer lever is such that the second outer lever is in the initial position. , And is located in the third quadrant of the first to fourth quadrants of the two-dimensional coordinates having the center of the second axis as the origin.

  Preferably, the first outer lever has a connection shaft located in a fourth quadrant of the two-dimensional coordinates with the center of the first axis as an origin in a state where the first outer lever is at an initial position, and the second outer lever is In the initial position, the connection groove located in the second quadrant of the two-dimensional coordinates having the center of the second axis as the origin is connected to the first outer lever by fitting to the connection shaft, The spring is biased to the initial position.

  Preferably, when the second outer lever returns and rotates toward the initial position by the urging force of the spring, the second outer lever returns and rotates the first outer lever toward the initial position.

  Preferably, the first outer lever is provided with a connecting portion to which the operating force transmitting member is connected, and the connecting portion is configured to move the operating force transmitting member by opening the outer handle to the first outer lever. It is configured to be able to transmit to the lever, and to be unable to transmit the release rotation of the first outer lever due to the opening operation of the inner handle to the operating force transmitting member.

  Preferably, the first outer lever has an engaging portion capable of preventing release rotation by engaging with a stiffener provided on the door, and the first outer lever and the first shaft are engaged with the first shaft. The connecting portion is provided at a position between the connecting portions.

  According to the present invention, even if a force for releasing rotation acts on the second outer lever due to a collision accident or the like, the releasing rotation of the second outer lever is canceled by a force in the opposite direction to the releasing rotation acting on the first outer lever. Door can be prevented from opening.

1 is a side view of a left door to which a vehicle door latch device according to the present invention is applied. FIG. 2 is a vertical sectional view taken along line II-II in FIG. 1. It is the front view seen from behind the door latch device for vehicles. FIG. 2 is an exploded perspective view of the vehicle door latch device. It is the back view seen from the front of a meshing assembly. It is a front view of the principal part at the time of an initial state. It is a front view of the principal part when an outer handle is opened. It is a front view of the principal part when an inner handle is opened. FIG. 4 is an enlarged front view of a first outer lever and a second outer lever in an initial state.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, a door D to which the vehicle door latch device 1 according to the present embodiment is applied is a side door whose front portion is supported on the left side of the vehicle body so as to be openable and closable about a vertical axis. An outer handle OH that is operated when the door D is opened from outside the vehicle is provided on the outside of the vehicle, and an inner handle IH that is operated when the door D is opened from inside the vehicle is provided on the inside of the vehicle.

  As shown in FIGS. 3 and 4, the vehicle door latch device 1 is a left-hand engagement device that is disposed in the left door D and engages with the striker S on the vehicle body side to hold the door D in a closed state. And an operation assembly 3 attached to the back side of the engagement assembly 2 and including a locking / unlocking element.

  Note that the front side and the back side used in the description of the present embodiment are the azimuths when the vehicle door latch device 1 is viewed alone, and the front side is the rear surface when the vehicle door latch device 1 is attached to the door D. Side, and the back side is the front side.

  The meshing assembly 2 closes a synthetic resin body 5 fixed in the door D by a plurality of bolts 4 and an opening on the surface (the surface facing right in FIG. 4) of the body 5, and the door D together with the body 5. A body main body (without reference numeral) including a metal cover plate 6 fixed therein, and a metal back plate 7 fixed to the back surface of the body 5 (the surface facing left in FIG. 4). In the body, there are provided a latch 8 which is an engagement element which can be engaged with the striker S on the vehicle body side and a pole 9 which can be engaged with the latch 8. On the back side of the body 5, a first outer lever 10 connected to an outer handle OH via a Bowden cable 30 serving as an operation force transmitting member, and a second outer lever connected to the first outer lever 10 so as to be always interlocked therewith. A lever 11 is provided.

  As shown in FIG. 4, the operation assembly 3 has a casing 20 made of a synthetic resin that forms an outer shell and is fixed to the back surface of the body 5 of the meshing assembly 2. In the casing 20, the pawl 9 is released by being connected to the inner lever 21 connected to the inner handle IH and the second outer lever 11 via a Bowden cable 31 (see FIG. 1) routed inside the door D. A lift lever 22, which is a release part operable in a direction, and a locking / unlocking element are provided.

  The locking / unlocking element is connected to a key cylinder K for lock / unlock operation provided on the outer surface of the door D and a lock knob (not shown) for lock / unlock operation provided on the inside of the vehicle to lock and unlock the door. It is possible to switch to the state, and in the locked state, by displacing the lift lever 22 to the locked position, the lift lever 22 is released in response to the opening operation of the outer handle OH and the inner handle IH, By the release operation, the pawl 9 is rotated in the release direction to enable the opening of the door D. When the door 9 is in the locked state, the lift lever 22 is displaced to the locked position to open the outer handle OH and the inner handle IH. Even if the lift lever 22 is released according to the operation, the release operation swings against the pole 9 and the door D is opened. Although a configuration to disable, unlocking element, detailed description will not directly related to the present invention will be omitted. In the following description, it is assumed that the locking / unlocking element is in an unlocked state.

  As shown in FIGS. 3 and 4, the latch 8 is pivotally supported in a housing space between the body 5 and the cover plate 6 by a latch shaft 12 whose rotation axis is oriented in the front-rear direction. When the door D is opened by being urged in the opening direction (counterclockwise in FIG. 3) by the latch spring 13 disposed, the unlatch position (position rotated approximately 90 degrees counterclockwise from the full latch position shown in FIG. 3). ), When the door D is in the fully closed position, it is held in the full latch position (the position shown in FIG. 3), and when the door D is in the half door position, it is held in the half latch position between the unlatch position and the full latch position. Is done.

  The pole 9 is disposed inside the body 5 and rotatably supported by a shaft 92 between the cover plate 6 and the back plate 7, the rotation axis of which extends in the front-rear direction. The pawl 91 is urged in the engaging direction (clockwise in FIG. 3) by the pawl spring 14 to engage the half-latch engaging portion 82 provided on the latch 8 to move the latch 8 to the half-latch position. The latch 8 is held at the full latch position by engaging the claw portion 91 with the full latch engaging portion 81 provided on the latch 8.

  When the lift lever 22 is released in response to the opening operation of the outer handle OH or the inner handle IH, the pawl 9 is moved from the engaged position shown in FIG. 3 (the position where the claw portion 91 is engaged with the full latch engaging portion 81). The pawl portion 91 is rotated by a predetermined angle in the release direction (counterclockwise in FIG. 3) against the urging force of the spring 14, and the pawl portion 91 is disengaged from the full latch engaging portion 81, so that the door D can be opened.

  When the door D is closed, the striker S enters the striker entry groove 51 of the body 5 and the striker entry notch 61 of the cover plate 6 from the right in FIG. 3 and engages with the engagement groove 83 of the latch 8. As a result, the latch 8 rotates from the open position to the full latch position through the half latch position against the urging force of the latch spring 13, and the pawl portion 91 of the pawl 9 engages with the full latch engagement portion 81 of the latch 8. This prevents the latch 8 from rotating in the open direction (counterclockwise in FIG. 3) and holds the door D at the fully closed position.

  A cable holding portion 52 is provided on a side of the body 5 facing the outside of the vehicle. The lower end of the outer tube 301 of the Bowden cable 30 whose upper end is fixed to the vicinity of the outer handle OH is fixed to the cable holding portion 52.

  As shown in FIG. 2, the upper end of the inner cable 302 extending upward from the upper end of the outer tube 301 is connected to an outer handle lever OH1 that rotates upward following the door opening operation of the outer handle OH. The lower end of the inner cable 302 extending downward from the lower end of the outer tube 301 is connected to the first outer lever 10 by the connecting portion 16 as described later. Thereby, the opening operation of the outer handle OH is transmitted to the first outer lever 10 via the inner cable 302 and the connecting portion 16.

  As shown in FIGS. 4 and 5, the first outer lever 10 is pivotally supported between the back surface of the body 5 and the back plate 7 by a first shaft 15 whose rotation axis is oriented in the front-rear direction. An engaging portion 101 is provided at a tip portion facing right (in FIG. 5), and a connecting portion 16 is provided between the engaging portion 101 and the rotation center (center of the first shaft 15) O1.

  The connecting portion 16 is rotatably connected to the first outer lever 10 by a shaft portion 161 whose rotation axis is oriented in the front-rear direction, and when the inner cable 302 moves upward in response to the opening operation of the outer handle OH. The terminal portion 302a fixed to the lower end of the inner cable 302 is engaged with the connecting portion 16 from below, so that the opening operation of the outer handle OH can be transmitted to the first outer lever 10, as described later. When the first outer lever 10 is released from the initial position and rotated in response to the opening operation of the inner handle IH, the terminal portion 302a of the inner cable 302 is controlled so that the rotation is not transmitted to the outer handle OH via the inner cable 302. Concatenate. Thus, the opening operation of the inner handle IH is not transmitted to the outer handle OH.

  In a normal case where the door D is not deformed, the engaging portion 101 does not engage with the stiffener D1 provided on the inner surface of the door D, and releases the rotation of the first outer lever 10 from the initial position. However, if the door D is deformed to the inside of the vehicle due to a collision accident or the like and the stiffener D1 is displaced to the inside of the vehicle as shown by a two-dot chain line in FIG. Engages the stiffener D1 from below to prevent the first outer lever 10 from rotating in the release direction.

  The second outer lever 11 is located between the back surface of the body 5 and the back plate 7 at a position separated from the first shaft 15 in a direction orthogonal to the rotation axis direction, and is parallel to the first shaft 15. While being pivotally supported by the second shaft 17, it is urged in the initial direction (clockwise in FIGS. 6 to 8) by the urging force of a lever spring 18 wound around the second shaft 17, and is normally in the initial position (see FIG. 6). 6 to 8). In addition, the second shaft 17 is provided at a position that is located on the vehicle interior side of the first shaft 15 and below the first shaft 15.

  A first arm portion 111 and a second arm portion 112 are provided in a bifurcated manner at an end of the second outer lever 11 facing the outside of the vehicle, and a first arm portion 111 and a second arm portion 112 are provided between the first arm portion 111 and the second arm portion 112. A connection groove 113 is provided. The connecting shaft 102 of the first outer lever 10 is engaged with the connecting groove 113 so that the first outer lever 10 and the second outer lever 11 can always rotate synchronously with each other. A lift lever 22 is connected to an end of the second outer lever 11 that faces the inside of the vehicle so that the lift lever 22 can move up and down by rotation of the second outer lever 11.

  The lift lever 22 moves upward based on the release rotation of the second outer lever 11 and the rotation of the inner lever 21 due to the opening operation of the inner handle IH. 9 is rotated in the release direction.

Next, the first outer lever 10 and the second outer lever 11 will be described in more detail.
First, the first outer lever 10 will be described. In the front view shown in FIG. 9, the rotation center O1 of the first outer lever 10 (the axis of the first shaft 15) O1 is defined as the origin, a straight line extending in the horizontal direction passing through the origin O1 is defined as the x-axis, and the x-axis passes through the origin O1 A two-dimensional coordinate system having an origin O1 is defined by a vertical line orthogonal to the vertical axis as the y-axis, a direction toward the vehicle interior (right side) on the x-axis as a positive direction, and a direction pointing upward on the y-axis as a positive direction. When the fourth quadrant is defined from the quadrants, when the first outer lever 10 is at the initial position, the center of gravity G1 of the first outer lever 10 is such that the engaging portion 101 and the connecting portion 16 at the distal end are located in the third quadrant. In this regard, it is set in the third quadrant located between the origin O1 and the connecting portion 16. The connection shaft 102 is provided in a portion located in the fourth quadrant.

  When the position of the center of gravity G1 of the first outer lever 10 is set in the third quadrant as described above, when the impact force F1 acts on the vehicle door latch device 1 from the outside (left side in FIG. The inertial force generated by the impact acts on the center of gravity G1 of the first outer lever 10 in the direction opposite to the impact F1 (leftward in FIG. 9). A force for releasing and rotating clockwise around the center 15 acts. Further, when the impact force F2 acts from the inside of the vehicle (right side in FIG. 9), the inertial force generated by the impact force F2 is opposite to the impact force F2 with respect to the center of gravity G1 of the first outer lever 10 ( 9 (rightward in FIG. 9), a counterclockwise force acts on the first outer lever 10 about the first shaft 15 in a direction opposite to the release rotation.

  Next, the second outer lever 11 will be described. In the front view shown in FIG. 9, the rotation center O2 of the second outer lever 11 (the axis of the second shaft 17) O2 is defined as the origin, a horizontal line passing through the origin O2 is defined as the x-axis, and the x-axis passes through the origin O2. A two-dimensional coordinate system having an origin O2 with a vertical line perpendicular to the vertical axis as the y-axis, a direction toward the vehicle interior (right side) as the x-axis as a positive direction, and a direction as an upward direction as the y-axis as a positive direction. When the fourth quadrant is defined from the quadrants, when the second outer lever 11 is at the initial position, the center of gravity G2 of the second outer lever 11 is set to the third quadrant located closer to the origin O2. Further, the connection groove 113 is located in the second quadrant.

  When the position of the center of gravity G2 of the second outer lever 11 is set in the third quadrant as described above, when the impact force F1 acts on the vehicle door latch device 1 from the outside (left side in FIG. 9), The inertial force generated by the impact force F1 acts on the center of gravity G2 of the second outer lever 11 in a direction opposite to the impact force F1 (to the left in FIG. 9). A force acts in the direction, that is, the direction opposite to the release direction. When the impact force F2 acts from the inside of the vehicle (right side in FIG. 9), the inertial force generated by the impact force F2 is opposite to the impact force F2 with respect to the center of gravity G2 of the second outer lever 11 ( 9 (rightward direction in FIG. 9), a force acts on the second outer lever 11 in the counterclockwise direction, that is, the release direction.

Next, an operation of the vehicle door latch device 1 according to the present embodiment will be described with reference to FIGS.
When the door D is in the closed state, as shown in FIG. 6, the latch 8 is in the full latch position, the pawl 9 is in the engaged position, and the pawl 91 is latched by the urging force of the pawl spring 14. 8 is engaged with the full latch engaging portion 81.

(Opening operation with outer handle OH)
When the outer handle OH is opened in the closed state of the door D, the upper end of the inner cable 302 is pulled up based on the rotation of the outer handle lever OH1. The power is transmitted to the first outer lever 10 via the cable 302, the terminal portion 302a, and the connecting portion 16. As a result, the first outer lever 10 rotates clockwise about the first shaft 15 from the initial position shown in FIG. 6 to the release position shown in FIG. The release rotation of the first outer lever 10 in the clockwise direction is transmitted to the second outer lever 11 when the connecting shaft 102 comes into contact with the first arm portion 111. Thereby, the second outer lever 11 is released from the initial position shown in FIG. 6 around the second shaft 17 in a counterclockwise direction opposite to the first outer lever 10 against the urging force of the lever spring 18. Then, it rotates to the release position shown in FIG.

  When the second outer lever 11 is released and rotated, the lift lever 22 connected to the end of the second outer lever 11 is released upward as shown in FIG. 7 and transmits the release operation to the pawl 9. . As a result, the pawl 9 rotates in the releasing direction (counterclockwise) from the engagement position shown in FIG. 6, and the claw portion 91 is disengaged from the full latch engagement portion 81 of the latch 8 as shown in FIG. The opening of the door D is enabled by freely rotating the latch 8 in the opening direction.

(Opening operation with inner handle IH)
When the inner handle IH is opened in the closed state of the door D, the opening operation of the inner handle IH is transmitted to the inner lever 21 via the Bowden cable 31, and the inner lever 21 is rotated. The release rotation of the inner lever 21 is transmitted to the lift lever 22, and the lift lever 22 releases upward from the initial position shown in FIG. 6, and transmits the release operation to the pawl 9 as shown in FIG. As a result, the pawl 9 rotates from the engagement position shown in FIG. 6 in the release direction, and the pawl portion 91 disengages from the full latch engagement portion 81 of the latch 8 as shown in FIG. The door D can be opened by freely rotating in the direction.

  In parallel with the releasing operation of the pawl 9, the releasing operation of the lift lever 22 is also transmitted to the second outer lever 11, and the second outer lever 11 is moved from the initial position shown in FIG. To release the counterclockwise rotation. The counterclockwise release rotation of the second outer lever 11 is transmitted to the first outer lever 10 when the second arm portion 112 abuts on the connecting shaft 102. As a result, the first outer lever 10 is released from the initial position shown in FIG. 6 clockwise around the first shaft 15 and rotates to the position shown in FIG. In this case, since the connecting portion 16 connected to the first outer lever 10 moves upward, the connecting portion 16 does not engage with the terminal portion 302a of the inner cable 302, and as shown in FIG. Even if the first outer lever 10 is released and rotated clockwise from the initial position, the terminal portion 302a of the inner cable 302 remains released at the initial position and the first outer lever 10 is released and rotated clockwise, that is, the inner handle. The opening operation of the IH is not transmitted to the outer handle OH.

(When door D receives impact force F1 from outside the vehicle)
Referring to FIG. 9, when an impact force F1 is applied to the door D from outside of the vehicle due to a collision accident or the like, the center of gravity G1 of the first outer lever 10 is located in the third quadrant when in the initial position. As a result, a force is applied to the first outer lever 10 in the release direction, which is a clockwise direction about the first shaft 15. Further, since the center of gravity G1 of the second outer lever 11 is located in the third quadrant when in the initial position, the second outer lever 11 has the second shaft 17 pivoted clockwise about the second shaft 17 in a direction opposite to the release direction. Force acts.

  In this case, with the deformation of the door D to the inside of the vehicle, the stiffener D1 is displaced from the position indicated by the solid line to the inside of the vehicle indicated by the two-dot chain line and enters the movement locus of the engagement portion 101 of the first outer lever 10. Then, the engagement portion 101 can be engaged with the stiffener D1, and the release rotation of the first outer lever 10 in the clockwise direction is prevented. This prevents the door D from being released.

  Further, even if the stiffener D1 does not enter the movement locus of the engaging portion 101 of the first outer lever 10, the clockwise release rotation acting on the first outer lever 10 is performed by the connecting shaft 102 in the release direction. The second outer lever 11 is pressed against the first arm 111 of the second outer lever 11, which is acting in the opposite direction, and is canceled by the force acting on the second outer lever 11 in the direction opposite to the release direction. . Accordingly, it is possible to prevent a situation in which the first and second outer levers 10 and 11 are released and rotated, and the lift lever 22 is released.

(When the door D receives the impact force F2 from inside the car)
Explaining with reference to FIG. 9, when an impact force F2 is applied to the door D from the inside of the vehicle due to a collision accident or the like, the first outer lever 10 is turned around the first shaft 15 in a direction opposite to the release direction. A clockwise force acts. Further, a force is applied to the second outer lever 11 in the counterclockwise release direction about the second shaft 17. Therefore, the release rotation in the counterclockwise direction acting on the second outer lever 11 causes the second arm portion 112 to abut on the connection shaft 102 of the first outer lever 10 on which the force in the direction opposite to the release direction is acting. Since it is received, the counterclockwise release rotation acting on the second outer lever 11 is counteracted by a force acting on the first outer lever 10 in a direction opposite to the counterclockwise release direction. Thus, it is possible to prevent a situation in which the second outer lever 11 is independently released and rotated to release the lift lever 22 as in the related art.

  As described above, the clockwise release rotation acting on the first outer lever 10 is counteracted by the force in the opposite direction to the release rotation acting on the second outer lever 11, and acts on the second outer lever 11. The counterclockwise release rotation is counteracted by the force in the opposite direction to the release rotation acting on the first outer lever 10, so that the pole 9 is not affected even if an impact is received from either the outside or the inside of the vehicle. Movement for releasing operation can be prevented.

  The first to fourth quadrants of the two-dimensional coordinates described in the above embodiment are defined based on the front view of the vehicle door latch device 1 for the left door D. Therefore, in the vehicle door latch device for the right door, which has a symmetrical structure with respect to the vehicle door latch device 1 of the present embodiment, in order to make the positional relationship between the quadrants of the two-dimensional coordinates and the elements the same as in the present embodiment, The first to fourth quadrants of the two-dimensional coordinates are determined based on the back view. In other words, the quadrant of the two-dimensional coordinates is interpreted that a direction facing the inside of the vehicle on the x axis is a positive direction and a direction facing upward on the y axis is a positive direction.

REFERENCE SIGNS LIST 1 vehicle door latch device 2 meshing assembly 3 operation assembly 4 bolt 5 body 51 striker entry groove 6 cover plate 61 striker entry notch 7 back plate 8 latch 81 full latch engagement portion 82 half latch engagement portion 83 engagement groove 9 pole 91 pawl Part 92 Shaft part 10 First outer lever 101 Engagement part 102 Connection shaft 11 Second outer lever 111 First arm part 112 Second arm part 113 Connection groove 12 Latch shaft 13 Latch spring 14 Pole spring 15 First shaft 16 Connection part 161 Shaft part 17 Second shaft 20 Casing 21 Inner lever 22 Lift lever 30 Bowden cable 31 Bowden cable 301 Outer tube 302 Inner cable 302a Terminal D door D1 Stiffener IH Inner Handle O1 Center of rotation OH Outer handle OH1 Outer handle lever S Striker

Claims (6)

A latch that engages the striker on the vehicle body when the door is closed;
A pawl that holds the engagement between the latch and the striker and can release the engagement between the latch and the striker by rotating in a release direction;
A release mechanism that can rotate the pole in a release direction,
The release mechanism,
A first outer lever pivotally supported by a first shaft, coupled to an outer handle disposed outside the door via an operation force transmitting member, and capable of releasing rotation by opening the outer handle;
While being pivotally supported by the second shaft, the release rotation can be transmitted to the pole by releasing rotation in conjunction with the first outer lever in response to the opening operation of the outer handle, and the release rotation can be transmitted to the pole, A second outer lever connected to the first outer lever so as to release and rotate the first outer lever when the inner handle disposed at the opening operation is opened.
When the door receives an impact force from inside the vehicle,
The first outer lever has a center of gravity for applying a force in the anti-release direction at the initial position,
A door latch device for a vehicle, wherein the second outer lever has a center of gravity for applying a force in a release direction at an initial position. The second axis is at a position separated from the first axis in a direction orthogonal to the axial direction,
The position of the center of gravity of the first outer lever is located in the third quadrant of the first to fourth quadrants of the two-dimensional coordinates with the origin at the center of the first axis when the first outer lever is at the initial position. And
The position of the center of gravity of the second outer lever is located in the third quadrant of the first to fourth quadrants of two-dimensional coordinates having the origin at the center of the second axis when the second outer lever is at the initial position. The vehicle door latch device according to claim 1, wherein The first outer lever has a connection shaft located in a fourth quadrant of the two-dimensional coordinates with the center of the first axis being an origin in a state where the first outer lever is at an initial position,
In the state where the second outer lever is at the initial position, the connection groove located in the second quadrant of the two-dimensional coordinates having the origin at the center of the second axis is fitted to the connection shaft. 3. The vehicle door latch device according to claim 2, wherein the door latch device is connected to the outer lever and urged to an initial position by a spring.   4. The vehicle according to claim 3, wherein the second outer lever returns and rotates the first outer lever toward the initial position when the second outer lever returns and rotates toward the initial position by the biasing force of the spring. Door latch device. The first outer lever is provided with a connecting portion to which the operating force transmitting member is connected,
The connecting portion is capable of transmitting the movement of the operating force transmitting member by the opening operation of the outer handle to the first outer lever, and controlling the release rotation of the first outer lever by the opening operation of the inner handle to the operating force. The vehicle door latch device according to any one of claims 1 to 4, wherein the vehicle door latch device has a configuration that prevents transmission to a transmission member. The first outer lever has an engaging portion capable of preventing release rotation by engaging with a stiffener provided on the door,
The vehicle door latch device according to claim 5, wherein the connecting portion is provided at a position between the first shaft and the engaging portion in the first outer lever.

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