JP5023401B2 - Door latch device for automobile - Google Patents

Description

  The present invention relates to an automotive door latch device that is connected to an in-vehicle operation means that is provided on the inner side of a door and that can be locked / unlocked and opened, via an operating force transmission member that can be pushed and pulled.

  In the conventional door latch device for an automobile as described above, an inside lever (operation member) connected to an inside handle provided on the inside of the door via a single operation force transmission member is connected to the inside lever. Switching means and a number of other levers. The inside lever moves to the lock / unlock position in conjunction with the inside handle lock / unlock operation, and further moves from the unlock position to the open position in conjunction with the inside handle open operation. Further, the switching means is such that the pin provided at the end portion is slidably engaged with the long hole provided in the inside lever, and the lock / unlock position is interlocked with the movement of the inside lever to the lock / unlock position. To move on. When the inside lever moves from the unlock position to the open position, the door can be opened by rotating the locking member in the release direction while holding the switching means at the unlock position. (For example, refer to Patent Document 1).

Japanese Patent No. 3338950

  However, the automobile door latch device described in Patent Document 1 has a problem that the configuration is complicated because the inside lever and the switching means are connected to each other via a long hole and a pin. .

  SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an automobile that is connected to an in-vehicle operation means that is provided on the inner side of a door and that can be locked / unlocked and opened, via an operation force transmitting member that can be pushed and pulled. It is an object of the present invention to provide an automotive door latch device that has a simple structure and that can be reliably locked, unlocked, and opened.

According to the present invention, the above problem is solved as follows.
According to a first aspect of the present invention, there is provided an automotive door latch device that is connected to an in-vehicle operation means that can be locked / unlocked and opened via a single operating force transmission member. A meshing portion that can be engaged with and disengaged from the striker, a release-contacted portion operable in a release direction that can release the engagement between the meshing portion and the striker, and opening of an outside operation means provided on the vehicle exterior side of the door An outside lever that can be operated in the open direction based on the operation, a locking lever that can be turned to the unlocked position and the locked position based on the rotation of the motor, and the open lever connected to the locking lever in the opening direction. A switching lever which can be moved to an unlocked position where the release contacted part can be operated in the releasing direction and an inoperable locked position by the operation of The vehicle operating means is connected to the vehicle operating means via the operating force transmitting means and can be turned to the first position, the second position, and the third position based on the locking, unlocking operation and opening operation of the vehicle operating means, A first abutting portion capable of abutting against the locking lever so that the locking lever can be rotated from the unlocked position to the locked position by rotating from the second position to the first position; From the locked position to the unlocked position so that the locking lever can be pivoted from the locked position to the unlocked position, and abuts against the locking lever and rotates in the open direction from the second position to the third position. A second abutting portion that swings with respect to the locking lever so that the locking lever does not move from the unlocked position when moving; An inside lever that operates the switching lever in the open direction when rotating from the second position to the open direction, and the locking lever rotates from the locked position to the unlocked position by rotation of the motor; When rotating the inside lever from the first position to the second position, the first abutted portion that contacts and abuts the first abutting portion, and the unlocked position to the locked position, A second abutted portion that abuts against the second abutting portion so that the inside lever can be rotated from the second position to the first position;

  In a second aspect based on the first aspect, the second contact portion of the locking lever is displaced outside the movement locus of the second contact portion of the inside lever when the locking lever is in the second position. .

  According to a third aspect of the present invention, in the first or second aspect, the locking lever is elastically held in the locked position and the unlocked position by an elastic member, and the inside lever is held when the locking lever is held in the locked position. The first abutting portion abuts on the first abutted portion of the locking lever, and the second abutting portion abuts on the second abutted portion of the locking lever. Retained.

  In a fourth aspect based on any one of the first to third aspects, the inside lever is linked to the switching lever via a play corresponding to a movement stroke between the first position and the second position.

  According to the present invention, the first abutment portion and the second abutment portion of the inside lever abut against the first abutment portion and the second abutment portion of the locking lever, respectively. Since the actuator is operated to the lock position and the unlock position, the configuration is simplified, and the locked / unlocked state can be reliably obtained based on the lock / unlock operation of the in-vehicle operation means. Further, since the inside lever can be directly rotated to the first and second positions by rotating the locking lever to the locked position and the unlocked position by the rotation of the motor, the configuration can be further simplified.

It is a side view of the vehicle interior side of the door to which the present invention is applied. It is operation | movement explanatory drawing of the operation force transmission means connected with a vehicle inside operation means. It is a disassembled perspective view of the door latch apparatus concerning embodiment of this invention. It is the perspective view seen from the slanting back of the door latch device. It is the perspective view similarly seen from diagonally forward. It is a side view which similarly shows a locked state. It is a side view which similarly shows an unlocked state. It is a side view which similarly shows an open operation state. It is a side view which similarly shows an unlatched state. It is a side view which shows the locked state of the door latch apparatus concerning other embodiment of this invention. It is a side view which similarly shows a locked state. It is a side view which similarly shows an open operation state.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the following description, the left side in FIGS. 1, 2 and 6 to 12 is “front”, the right side is “rear”, the front side of the page is “inside the vehicle”, and the back side of the page is “outside”. To do.

  As shown in FIG. 1, an outside handle OH that is opened when the door D is opened from the outside of the vehicle and a door D from the outside of the vehicle are locked / unlocked. A key cylinder (not shown) is provided that is operated when turning on. Further, inside the door D, an inside handle IH that is opened when the door D is opened from the inside of the vehicle and a lock knob that is attached in the vicinity of the inside handle IH and that is operated when the lock / unlock operation is performed from inside the vehicle. In-vehicle operation means A including LK is provided.

  The lock operation is an operation for bringing the door latch device 1 into a locked state, that is, a state in which the door D cannot be opened even when the outside handle OH is opened, and the unlocking operation is the door latch device 1. Is in an unlocked state, that is, a state in which the door D can be opened by opening the outside handle OH. The locked state refers to a state in which a locking lever 13 and a switching lever 14 described later are in a locked position, and an inside lever 16 described later is in a first position. In the unlocked state, the locking lever 13 and the switching lever 14 are unlocked. The position and the inside lever 16 to be described later are in the second position.

  The inside handle IH and the lock knob LK of the in-vehicle operation means A are coupled to the inside lever 16 of the door latch device 1 via an operation force transmission member 15 that is formed from a single Bowden cable and that can be pushed and pulled.

  Based on FIG. 2, an operation mode of the operation force transmission member 15 based on each operation of the in-vehicle operation means A will be described. An end portion 151 (a portion connected to an inside lever 16 described later) of the operation force transmission member 15 is When the inside handle IH is in the standby position (the position in which it is not operated) and the lock knob LK is in the lock position, it is in the lock position L, and the inside handle IH is in the standby position and the lock knob LK is unlocked. When operated to the lock position, it moves from the lock position L to the unlock position UL. Further, when the lock knob LK is in the unlock position and the inside handle IH is opened, the unlock position UL is changed to the open position O. Move further.

  The operating force transmission member 15 is not limited to a Bowden cable, and may be a rod-like rod or a plate-like link that can transmit a push-pull operation.

  The configuration of the in-vehicle operation means A is described in, for example, Japanese Patent Application Laid-Open No. 9-96131, Japanese Patent No. 3104740, Japanese Patent No. 3338950, or Japanese Patent Application No. 2009-204256 filed earlier by the present applicant. Things apply.

  The door latch device 1 is attached to the rear end portion in the door D of the automobile, and operates the meshing portion 2 and the meshing portion 2 for restraining the door D in the closed state as shown in FIGS. The operation unit 3 is provided.

  The meshing portion 2 includes a synthetic resin body 4 fixed to the door D by a plurality of bolts (not shown), a metal cover plate 5 that closes the rear side portion of the body 4, and a front side portion of the body 4. A metal base plate 6 fixed to the body 4, a latch 7 that is pivotally mounted in the body 4 by a pivot 8 that faces in the front-rear direction, and that can be engaged with a striker (not shown) fixed to the vehicle body side; A ratchet (not shown) that is pivotally attached by a pivot 9 that faces in the front-rear direction and that can be engaged with and disengaged from the latch 7, and a release lever 10 that is supported by the pivot 9 on the front side surface of the body 4 and that can rotate integrally with the ratchet. It is comprised including.

  The release lever 10 can be rotated integrally with the ratchet, and a release contacted portion 101 and a blocking portion 102 that are bent are provided at the rotating end portion. Since the release contact portion 101 and the blocking portion 102 are configured so that the release lever 10 rotates integrally with the ratchet, the door D is in a closed state and the ratchet is engaged with the latch 7. 6 and 7, and when the door D is opened and the ratchet is not engaged with the latch 7, the disengaged position shown in FIG. 9 is moved upward from the engaged position. Displace. In this embodiment, the release contact portion 101 is provided on the release lever 10, but the release contact portion 101 may be provided on the ratchet instead.

  When the door D is closed, the striker that has entered the striker entry grooves 4a and 5a provided in the body 4 and the cover plate 5 engages with the latch 7, and the ratchet rotates in the opening direction with respect to the latch 7. By engaging to prevent, door D is constrained to a closed state. When the outside handle OH or the inside handle IH is operated, when the door latch device 1 is in the unlocked state, the release lever 10 rotates in the release direction as described later, so that the ratchet is detached from the latch 7. Thus, the engagement between the latch 7 and the striker is released, and the door D can be opened.

  The operation unit 3 includes a housing 11 made of synthetic resin that is fixed so as to cover the entire area of the front side surface of the body 4, and a portable remote operation switch or a switch ( A motor 12 that can be rotated forward and backward by an operation switch (not shown), a locking lever 13 that has a gear portion 131 that meshes with a worm 121 fixed to the rotating shaft of the motor 12, and a locking lever 13. A switching lever 14, an inside lever 16 connected to the in-vehicle operating means A via an operating force transmission member 15, and an outside lever 17 connected to the outside handle OH via an operating force transmission member 22 such as a rod. including. In FIG. 4, a synthetic resin cover for closing the side surface portion of the housing 11 on the vehicle interior side is omitted in order to clearly show the components in the housing 11.

  The housing 11 is substantially L-shaped in plan view, and integrally forms a meshing cover 110 that covers the front side surface of the body 4 in the meshing part 2 and an operation cover 111 that is substantially parallel to the inner panel of the door D. Do it.

  The outside lever 17 is pivotally supported by a support shaft 18 facing in the front-rear direction in the meshing cover portion 110 of the housing 11, and an operating force transmitted to the connecting portion 171 at the outer end of the vehicle is connected to the outside handle OH. The lower end of the member 22 is connected. As a result, when the outside handle OH is opened, the outside lever 17 rotates in the opening direction (in the direction indicated by the arrow X shown in FIG. 5) about the support shaft 18.

  A lower end portion of the switching lever 14 is connected to the vehicle inner end portion 172 of the outside lever 17, and an unlatch contact portion 164 provided on the inside lever 16 is applied from below in the vicinity of the vehicle inner end portion 172. An unlatched contacted portion 173 that is bent toward the inside of the vehicle is provided. The vehicle inner end 172 of the outside lever 17 moves upward when the outside lever 17 rotates in the opening direction from the standby position. The outside lever 17 is urged by a spring (not shown) so that the vehicle inner end 172 and the unlatched contacted portion 173 are held at the standby position shown in FIGS.

  The locking lever 13 is pivotally supported in the operation cover portion 111 of the housing 11 by a support shaft 19 facing inward and outward of the vehicle, and the gear portion 131 provided on the outer periphery meshes with the worm 121 to rotate the motor 12 ( Alternatively, by operating the key cylinder), the lock position (see FIG. 6), the unlock position (see FIG. 7) rotated clockwise by a predetermined angle from the lock position, and vice versa can be achieved. Note that the worm 121 reversibly meshes with the gear portion 131 of the locking lever 13 so as to be reversed by rotation from the locking lever 13 side.

  The locking lever 13 is provided with an arc-shaped long hole 132 centered on the support shaft 19. A cylindrical stopper portion 112 provided in the housing 11 is loosely fitted in the elongated hole 132 so as to be relatively slidable in the circumferential direction around the support shaft 19. Thereby, when the locking lever 13 is rotated to the locked position, as shown in FIG. 6, the upper end of the long hole 132 comes into contact with the stopper portion 112 from the upper side to prevent further rotation. When rotating to the unlock position, as shown in FIG. 7, the lower end of the long hole 132 comes into contact with the stopper portion 112 from below to prevent further rotation and rotate between the lock position and the unlock position. The range of rotation is limited so that it can move.

  Further, the locking lever 13 is provided with a first arm part 133 that faces rearward and obliquely upward and a second arm part 134 that faces rearward and obliquely downward. The first arm portion 133 includes a connecting shaft portion 135 that protrudes inward of the vehicle, and a first abutted portion 136 that can abut against the first abutting portion 162 provided at the upper end portion of the inside lever 16. Provided. At the lower end of the second arm portion 134, a second abutted portion 137 that can abut against the second abutting portion 163 provided on the inside lever 16 is provided.

  An elastic member for holding the locking lever 13 in the locked position and the unlocked position is constituted by a torsion spring 20. In the torsion spring 20, the coil portion is wound around the stopper portion 112, and the arm portions 201 and 201 sandwich the protrusion 138 provided on the locking lever 13 from above and below, so that the locking lever 13 is locked. When the locking lever 13 is rotated to the unlocking position, an urging force in the locking direction (counterclockwise in FIG. 6) is applied to the locking lever 13, and when the locking lever 13 is rotated to the unlocking position, the locking lever 13 is unlocked. The biasing direction is changed so as to apply a biasing force in the locking direction (clockwise in FIG. 7).

  The lower portion of the switching lever 14 is connected to the vehicle inner end 172 of the outside lever 17 so as to be swingable in the front-rear direction, and a vertical hole 141 provided in the upper portion is connected to the connecting shaft portion 135 of the locking lever 13. It is slidably engaged in the vertical direction, and moves to the locked position (see FIG. 6) and unlocked position (see FIG. 7) in conjunction with the operation of the locking lever 13 to the locked position and unlocked position. The side lever 17 is moved in the opening direction (upward) following the rotation of the side lever 17 in the opening direction.

  A release contact portion 142 that can contact the release contact portion 101 of the release lever 10 from below is provided at a substantially central portion of the switching lever 14 in the vertical direction, and above the release contact portion 142. A hook-like engagement claw 143 is provided.

  When the switching lever 14 is in the unlocked state as shown in FIG. 7, the release contact portion 142 faces the release contact portion 101 of the release lever 10, and the outside lever 17 rotates in the opening direction. By operating in the open direction in conjunction with each other, the release contact portion 142 contacts the release contact portion 101 from below, and the release lever 10 can be rotated in the release direction to open the door D. 6, when the release contact portion 142 is displaced to a position not facing the release contacted portion 101 and is moved in the open direction by the rotation of the outside lever 17, the release contact portion 142 is released. The door D cannot be opened by swinging with respect to the contacted portion 101.

  When the door D is opened and the release lever 10 is in the disengaged position, the engaging claw portion 143 of the switching lever 14 prevents the switching lever 14 from moving from the unlocked position to the locked position, as shown in FIG. Engage with the blocking portion 102 of the release lever 10 as is possible. Therefore, when the door D is open, the door latch device 1 cannot be brought into the locked state simply by locking the lock knob LK. In order to switch to the locked state when the door D is open, first, by operating the opening of the outside handle OH, the switching lever 14 is operated in the opening direction as shown by a two-dot chain line in FIG. And the engagement relationship between the release lever 10 and the blocking portion 102 are released. In this state, even when the release lever 10 is in the non-engagement position, the switching lever 14 can be operated from the unlock position to the lock position, so that the lock lever LK is locked from the unlock state based on the lock operation of the lock knob LK. You can switch to the state. Then, after switching to the locked state, the door D can be closed in the locked state by releasing the opening operation of the outside handle OH and closing the door D.

  The inside lever 16 is pivotally supported by a support shaft 21 that is in the operation cover portion 111 of the housing 11 and that is separated from the support shaft 19 by a predetermined distance, and is directed to the connecting portion 161 at the lower end. Is connected to the end portion 151 of the operating force transmission member 15 whose front end is linked to the in-vehicle operating means A. Thereby, the inside lever 16 is configured such that when the inside handle IH of the in-vehicle operation means A is in the standby position and the lock knob LK is in the lock position, the end 151 of the operating force transmission member 15 is locked as shown in FIG. When the inner handle IH is at the standby position and the lock knob LK is unlocked, the end 151 of the operating force transmission member 15 is held at the first position (see FIG. 6). 2 moves to the unlock position UL shown in FIG. 2, and therefore moves from the lock position to the second position (see FIG. 7) rotated clockwise by a predetermined angle, and when the lock knob LK is in the unlock position, When the handle IH is opened, the end 151 of the operating force transmission member 15 moves to the open position O, so that the handle IH is further moved from the unlock position. Third position by a predetermined angle rotates to an open direction (clockwise direction) (see FIG. 8) is rotated.

  A first abutting portion 162 that can abut against the first abutted portion 136 of the locking lever 13 is provided at the upper end portion of the inside lever 16, and the locking lever 13 is also located above the connecting portion 161. A second abutting portion 163 capable of abutting against the second abutted portion 137 is provided. Further, the inside lever 16 is provided with an unlatching contact portion 164 that can contact the unlatched contact portion 173 of the outside lever 17 from below when the inside lever 16 is rotated in the opening direction from the second position.

  When the inside lever 16 rotates from the second position to the first position, the first abutting portion 162 of the inside lever 16 abuts against the first abutted portion 136 of the locking plate 13 to thereby contact the locking lever 13. Is rotated from the unlocked position to the locked position. Similarly, the second abutting portion 163 is configured such that the second abutted portion 137 of the locking lever 13 is rotated when the inside lever 16 is pivoted from the first position to the second position. The locking lever 13 is rotated from the locked position to the unlocked position.

  The first abutted portion 136 of the locking lever 13 is a first abutting portion of the inside lever 16 when the locking lever 13 rotates from the locked position to the unlocked position by the rotation of the motor 12 (or operation of the key cylinder). The inside lever 16 is rotated from the second position to the first position by facing and abutting on the 162, and similarly, the second abutted portion 137 has the locking lever 13 rotated by the motor 12 (or operation of the key cylinder). When rotating from the unlocked position to the locked position by this, the inside lever 16 is rotated from the first position to the second position by coming into contact with the second contact portion 163 of the inside lever 16.

  As shown in FIG. 7, when the locking lever 13 is in the unlocked position and the inside lever 16 is in the second position, the second contacted portion 137 of the locking lever 13 is opened from the second position of the inside lever 16. The second abutting portion 163 is displaced outside the movement locus along with the rotation in the direction. Further, the second contact portion 163 of the inside lever 16 is located in the movement locus of the second contacted portion 137 accompanying the rotation of the locking lever 13 from the unlocked position to the locked position. Therefore, when the inside lever 16 rotates in the opening direction from the second position, the second contact portion 163 is swung with respect to the second contacted portion 137, and the locking lever 13 moves from the unlock position. There is nothing. When the locking lever 13 rotates from the unlock position to the lock position, the second contacted portion 137 contacts the second contact portion 163, and the inside lever 16 is moved from the second position to the first position. It can be rotated to one position.

  In a state where the inside lever 16 is in the first position, the inside lever 16 is moved from the first position to the second position between the unlatched contact portion 164 of the inside lever 16 and the unlatched contact portion 173 of the outside lever 17. A play L (see FIG. 6) corresponding to the movement stroke when moving to is provided. Therefore, when the inside lever 16 rotates from the first position to the second position, the unlatched contact portion 164 does not contact the unlatched contacted portion 173. Therefore, the operation when the inside lever 16 rotates from the first position to the second position is not transmitted to the outside lever 17 and the switching lever 14.

  In this embodiment, the unlatched contacted portion 173 that contacts the unlatched contact portion 164 of the inside lever 16 is provided on the outside lever 17. Instead, the unlatched contacted portion 173 is replaced with a switching lever. 14 may be provided. In this case, the movement of the inside lever 16 from the second position to the opening direction is directly transmitted to the switching lever 14 without passing through the outside lever 17.

  As shown in FIG. 7, in the unlocked state, the first contacted portion of the locking lever 13 in which the first contact portion 162 of the inside lever 16 is held in the unlocked position by the urging force of the torsion spring 20. The inside lever 16 is in the unlocked position in a state where the inside lever 16 is in contact with or close to the portion 136 and the unlatching contact portion 164 is in contact with or close to the unlatched contact portion 173 of the outside lever 17. Retained.

  When the lock knob LK of the in-vehicle operation means A is locked in the unlocked state, the lock operation of the lock knob LK is transmitted to the inside lever 16 via the operating force transmission member 15. The inside lever 16 rotates from the second position shown in FIG. 7 toward the lock position opposite to the open direction, and the first contact portion 162 contacts and contacts the first contacted portion 136 of the locking lever 13. . As a result, the locking lever 13 is pushed from the unlock position toward the lock direction and rotates from the unlock position to the lock position against the urging force of the torsion spring 20, and the switching lever 14 is also locked to the locking lever 13. With the rotation of the position, the unlock position moves to the lock position. As a result, as shown in FIG. 6, the inside lever 16 is moved to the first position, the locking lever 13 and the switching lever 14 are moved to the locked position and switched to the locked state.

  When the motor 12 rotates in the locking direction or the key cylinder is locked in the unlocked state, the locking lever 13 moves from the unlocked position to the locked position against the urging force of the torsion spring 20. Rotate towards. As a result, the second contact portion 137 of the locking plate 13 contacts the second contact portion 163 of the inside lever 16, so that the inside lever 16 rotates from the second position to the first position.

  In the locked state shown in FIG. 6, the first contact portion 162 of the inside lever 16 contacts the first contacted portion 136 of the locking lever 13 that is held in the locked position by the urging force of the torsion spring 20. Alternatively, the second contact portion 163 comes into contact with or comes close to the second contacted portion 137 of the locking lever 13. Therefore, in this state, the inside lever 16 is held at the first position by the urging force of the torsion spring 20 via the locking lever 13.

  When the lock knob LK of the in-vehicle operation means A is unlocked in the locked state, the unlock operation of the lock knob LK is transmitted to the inside lever 16 via the operation force transmission member 15. The inside lever 16 rotates from the first position shown in FIG. 6 toward the second position shown in FIG. 7, and the second contact portion 163 contacts and contacts the second contacted portion 137 of the locking lever 13. As a result, the locking lever 13 is pushed from the lock position toward the unlock position and rotates from the lock position to the unlock position against the urging force of the torsion spring 20. As the locking lever 13 rotates, the switching lever 14 is also moved from the locked position to the unlocked position to switch to the unlocked state.

  In the locked state, when the motor 12 rotates in the unlocking direction or the key cylinder is unlocked, the locking lever 13 resists the urging force of the torsion spring 20 and the locking position shown in FIG. To the unlock position shown in FIG. Thereby, the inside contact lever 16 rotates from the 1st position to the 2nd position because the 1st contacted part 136 of locking lever 13 counter-contacts the 1st contact part 162 of inside lever 16.

  When the inside handle IH of the in-vehicle operation means A is opened in the unlocked state, the opening operation of the inside handle IH is transmitted to the inside lever 16 via the operating force transmission member 15. As shown in FIG. 8, the inside lever 16 rotates in the open direction from the second position in a state where the second contact portion 163 is swung with respect to the second contacted portion 137 of the locking lever 13. As a result, the unlatched contact portion 164 of the inside lever 16 contacts the unlatched contacted portion 173 of the outside lever 17 from below, rotates the outside lever 17 in the open direction, and is held in the unlocked position. The switch lever 14 is operated in the opening direction. As a result, the release contact portion 142 of the switching lever 14 contacts the release contact portion 101 of the release lever 10 and the release lever 10 rotates in the open direction, thereby opening the door D.

  As described above, in the embodiment, the first lever 162 and the second contact 163 are provided on the inside lever 16, and the first cover that can contact the locking lever 13 so as to face the first contact 162. By providing a second abutted portion 137 that can be opposed to and separated from the abutting portion 136 and the second abutting portion 163, the inside lever 16 based on the locking / unlocking operation of the in-vehicle operation means A can be performed. The rotation can be reliably transmitted to the locking lever 13 to be in the locked / unlocked state. Further, by turning the inside lever 16 in the opening direction based on the opening operation of the in-vehicle operation means A, the door D can be opened with the locking lever 13 held in the unlocked position. Further, unlike the prior art, since a long hole and a pin are not required, the configuration can be simplified.

  Further, since the inside lever 16 can be rotated to the first and second positions by the operation of the locking lever 13 to the locked position and the unlocked position by the rotation of the motor 12 (or the operation of the key cylinder), the configuration of the structure is further increased. Simplification can be achieved.

  10 to 12 show another embodiment of the present invention. The operation unit of this embodiment includes a motor 12A, a locking lever 13A, a switching lever 14A, an inside lever 16A, and an outside lever 17A as in the above embodiment, and these levers are provided on the housing 11A.

  The locking lever 13A and the inside lever 16A are pivotally supported on the housing 11 by a support shaft 23 that faces the inside and outside of the vehicle, and a spring 24 is provided between the locking lever 13A and the inside lever 16A.

  One end of the spring 24 is locked to the locking lever 13A and the other end is locked to the inside lever 16A, thereby urging the inside lever 16A counterclockwise with respect to the locking lever 13A.

  The locking lever 13A has a locking position where the protrusion 13A1 comes into contact with the first stopper 11A1 of the housing 11A as shown in FIG. 10 by rotation of the motor 12A, and the protrusion 13A1 of the housing 11A as shown in FIGS. It is possible to rotate between the unlock positions contacting the second stopper 11A2. The locking lever 13A is elastically held at the locked position and the unlocked position by the torsion spring 20A.

  The inside lever 16A rotates to the first position shown in FIG. 10 and the second position shown in FIG. 11 based on the locking and unlocking operations of the lock knob LK of the in-vehicle operation means A, and based on the opening operation of the inside handle IH. As shown in FIG. 12, it can be rotated in the open direction from the second position to the third position.

  When the locking lever 13A is rotated from the locked position to the unlocked position based on the rotation of the motor 12A (or operation of the key cylinder), the first arm portion 13A2 provided on the locking lever 13A is connected to the inside lever 16A. By contacting the bent portion 16A1, the inside lever 16A also rotates from the first position to the second position together with the locking lever 13A. Similarly, when rotating from the unlocked position to the locked position, the inside lever 16A also rotates from the second position to the first position together with the locking lever 13A by the urging force of the spring 24.

  When the inside lever 16A is rotated from the first position to the second position based on the unlocking operation of the lock knob LK, the locking lever 13A is also rotated together with the inside lever 16A from the locked position to the unlocked position by the biasing force of the spring 24. . Further, when the inside lever 16A rotates from the second position to the first position based on the locking operation of the lock knob LK, the bent piece 16A1 of the inside lever comes into contact with the first arm portion 13A2 of the locking lever 13A, thereby locking. The plate 13A also rotates together with the inside lever 16A to the lock position.

  Further, when the inside handle IH is opened, as shown in FIG. 12, the inside lever 16A is against the urging force of the spring 24 while the locking lever 13A is held in the unlocked position. It rotates in the opening direction from the second position. As a result, the unlatch releasing portion 16A2 of the inside lever 16A comes into contact with the outside lever 17A, so that the outside lever 17A and the switching lever 14A operate in the opening direction, thereby rotating the release lever 10A in the releasing direction. The door D can be opened.

DESCRIPTION OF SYMBOLS 1, 1A Door latch apparatus 2 Engagement part 3, 3A Operation part 4 Body 4a Striker entrance groove 5 Cover plate 5a Striker entrance groove 6 Base plate 7 Latch 8, 9 Axis 10, 10A Release lever 11, 11A Housing 11A1 1st stopper 11A2 2nd Stopper 12, 12A Motor 13, 13A Locking lever 13A1 Protruding part 13A2 First arm part 14, 14A Switching lever 15 Operating force transmission member 16, 16A Inside lever 16A1 Bending part 16A2 Unlatch releasing part 17 Outside lever 18 Supporting shaft 19 Support Shaft 20, 20A Torsion spring (elastic member)
21 Support shaft 22 Operating force transmission member 23 Support shaft 24 Spring 101 Release contacted portion 102 Blocking portion 110 Engagement cover portion 111 Operation mechanism cover portion 112 Stopper portion 121 Worm 131 Gear portion 132 Long hole 133 First arm portion 134 Second Arm part 135 Connection shaft part 136 First contact part 137 Second contact part 138 Projection part 141 Long hole 142 Release contact part 143 Engagement claw part 151 End part 161 Connection part 162 First contact part 163 First 2 abutting portion 164 unlatched abutting portion 171 connecting portion 172 vehicle inner side end portion 173 unlatched abutting portion 201 arm portion A in-vehicle operation means D door OH outside handle (outside vehicle operating means)
IH Inside handle LK Lock knob

Claims (4)

In a door latch device for an automobile, which is connected to an in-vehicle operation means provided inside the door and capable of locking / unlocking operation and opening operation through one operating force transmission member,
A meshing part that can be engaged with and disengaged from a striker on the vehicle body side
A release-contacted portion operable in a release direction capable of releasing the engagement between the meshing portion and the striker;
An outside lever operable in an opening direction based on an opening operation of an outside operation means provided on the outside of the door;
A locking lever that can be rotated to an unlock position and a lock position based on rotation of the motor;
A switching lever connected to the locking lever and movable to an unlock position and an inoperable lock position where the release contact portion can be actuated in a release direction by actuation of the outside lever in an open direction;
The vehicle operation means is connected to the vehicle operation means via the operation force transmission means, and can be turned to the first position, the second position, and the third position based on the lock, unlock operation, and open operation of the vehicle operation means. A first abutting portion capable of abutting against the locking lever so that the locking lever can be rotated from the unlocked position to the locked position by rotating from the second position to the first position; The locking lever is opposed to the locking lever so that the locking lever can be rotated from the locked position to the unlocked position by rotating from the position to the second position, and in the opening direction from the second position to the third position. A second abutting portion that swings with respect to the locking lever so that the locking lever does not move from the unlocked position when rotating; One when rotated to the open direction from the second position, and a inside lever for operating the switch lever to the open direction,
The locking lever faces the first contact portion so that the inside lever can be rotated from the first position to the second position when the locking lever is rotated from the locked position to the unlocked position by the rotation of the motor. The first abutted portion that abuts and the second abutting portion so as to be able to pivot the inside lever from the second position to the first position when pivoting from the unlocked position to the locked position. An automotive door latch device comprising a second abutted portion that abuts.   2. The automobile according to claim 1, wherein the second contact portion of the locking lever is displaced outside the movement locus of the second contact portion of the inside lever when the locking lever is in the second position. Door latch device. The locking lever is elastically held in a locked position and an unlocked position by an elastic member,
When the locking lever is held in the locked position, the inside lever is configured such that the first contact portion is the first contacted portion of the locking lever, and the second contact portion is the locking lever. 3. The automotive door latch device according to claim 1, wherein the door latch device is held in the first position by being brought into contact with the second contacted portion.   The motor vehicle door latch device according to any one of claims 1 to 3, wherein the inside lever is linked to the switching lever through play corresponding to a movement stroke between the first position and the second position. .

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