JP5743912B2 - Door lock device - Google Patents

Description

  The present invention relates to a door lock device that includes a latch mechanism that can be latched in a state where a vehicle door is closed, and that can release the latch of the door by the latch mechanism by rotating an open lever by operating a door handle.

  Conventionally, as this type of door lock device, one having a latch mechanism housed in a resin body is known (see, for example, Patent Document 1). In this door lock device, an open lever supported by a resin body (open lever 2 in Patent Document 1) is rotatably supported by a resin spindle integrally formed with the resin body.

JP 2009-127242 A (paragraph [0012])

  However, in a door lock device in which an open lever is supported by a resin support shaft, when the vehicle has a side collision (collision from the side), the open lever is pushed together with a linkage member that links the door handle and the open lever, and the resin support is supported. As a result, the shaft could be bent and the open lever could push up the link member connected to the latch mechanism to release the latch. Moreover, even if the support shaft is made of metal, the resin body to which the support shaft is connected may be deformed, and as a result, the open lever pushes up the link member connected to the latch mechanism to release the latch. Could occur.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door lock device capable of preventing the door from being unlatched due to a side collision.

  In order to achieve the above object, a door lock device according to the invention of claim 1 includes a latch mechanism that can be latched in a closed state of a vehicle door, a resin body that houses the latch mechanism, and a resin body. An open lever rotatably supported on a supporting shaft and a metal plate fixed to a resin body, and a door handle of the door is linked to one end of the open lever directed to the outside of the vehicle. In the door lock device that can release the latch of the door by the latch mechanism by rotating the open lever from the origin position to the operating position by operating the door handle in the closed state, the guide part provided on the open lever and the resin body Alternatively, it is provided on the metal plate, and is a guide for the open lever at the origin position in the area outside the rotation area at the operating position from the origin position of the guide portion. A guide standby portion disposed on the inner wall side of the vehicle with respect to the portion, and when the open lever moves relative to the resin body or metal plate toward the inner wall side of the vehicle, the guide standby portion is As a result, the open lever is guided so as to be restricted from rotating from the origin position toward the operating position.

  A door lock device according to a second aspect of the invention is a latch mechanism that can be latched in a state in which the door of the vehicle is closed, a resin body that houses the latch mechanism, and a pivot that is supported by a support shaft of the resin body. The door handle of the door is linked to one end of the open lever that is directed to the outside of the vehicle, and the open lever is rotated from the home position to the operating position by operating the door handle with the door closed. In the door lock device capable of releasing the latch of the door by the latch mechanism, the guide protrusion protruding from the inner wall side portion of the vehicle from the rotation center of the open lever, and the resin body are provided on the guide protrusion. A guide disposed on the inner wall side of the vehicle with respect to the guide protrusion of the open lever at the origin position in an area outside the rotation area from the origin position to the operating position. When the open lever is moved relatively to the inner wall side of the vehicle with respect to the resin body, provided on the receiving portion, one surface of the guide protrusion and the opposite surface of the guide standby portion that faces one surface of the guide protrusion And an emergency sliding contact portion that guides the sliding levers so as to restrict the rotation of the open lever from the origin position toward the operating position.

  According to a third aspect of the present invention, in the door lock device according to the second aspect, the emergency sliding contact portion is formed by inclining one surface of the guide protrusion and the opposing surface of the guide standby portion in parallel with each other. However, it has characteristics.

  The invention of claim 4 is characterized in that, in the door lock device according to claim 1, the guide portion and the guide standby portion are arranged on the inner wall side of the vehicle with respect to the support shaft.

  In the door lock device according to the first aspect, even if the metal plate is pushed by the open lever and deformed by the side collision, the guide portion provided in the open lever is deformed even if the support shaft is bent and the open lever moves. By sliding contact with the guide standby portion provided on the resin body or metal plate, the open lever is restricted from rotating from the origin position to the operating position, and the latch of the door is released by the latch mechanism. Such a situation can be prevented. Here, as in the door lock device according to the fourth aspect, by arranging the guide portion and the guide standby portion on the inner wall side of the vehicle with respect to the support shaft, the guide portion and the guide standby portion are located relative to the support shaft. Compared to the case where it is placed on the outer wall side of the vehicle, even if the metal plate is deformed and the support shaft is bent, the guide part and the guide standby part are prevented from being deformed or damaged. Can do.

  In the door lock device according to claim 2, even if the metal plate is deformed by being pushed by the side and pushed by the open lever and the support shaft is bent and the open lever moves, the guide protrusion provided in the open lever However, the sliding movement of the open lever from the origin position toward the operating position is restricted by sliding contact with the guide standby portion provided in the resin body, and the latch of the door is released by the latch mechanism. The situation can be prevented. In addition, when the guide protrusion and the guide standby portion are arranged on the inner wall side of the vehicle with respect to the support shaft, the guide protrusion and the guide standby portion are arranged on the outer wall side of the vehicle with respect to the support shaft. In contrast, even if the metal plate is deformed sideways and the support shaft is bent, the guide protrusion and the guide standby portion can be prevented from being deformed or damaged.

  Here, the guide protrusion and the guide standby part may be configured to be in sliding contact with each other in a point contact or line contact state. However, as in the door lock device according to claim 3, one surface of the guide protrusion and the guide standby part. By tilting the opposing surfaces of the part parallel to each other to form an emergency sliding contact part, one surface of the guide protrusion and the opposing surface of the guide standby part can be brought into sliding contact with each other, and the guide It is possible to smoothly guide the open lever by preventing stress concentration on one surface of the protrusion and the opposing surface of the guide standby portion.

The perspective view of the door lock device concerning one embodiment of the present invention. Plan view of the resin body disassembled A perspective view of the back side of the first resin cover Sectional drawing of the door lock device which looked at the AA cut surface in FIG. 1 from the downward direction Perspective view of support protrusion and pivot support cylinder Side view of door lock device in unlatched state Side view of door latch device in full latch state Side view of lift lever, open link, etc. Side view of lift lever, open link, etc. Side view of the door lock device viewed from the second component housing part side Perspective view of the back side of the door lock device Side view of the door lock device viewed from the rear side of the outside open lever Side view of the door lock device viewed from the main plate side of the sheet metal cover Side view of outside open lever Side view showing the behavior of the outside open lever when subjected to a side collision

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The door lock device 10 of the present embodiment is shown in its entirety in FIG. 1 and has a structure in which a plurality of parts are assembled to a resin body 11. As shown in FIG. 2, the resin body 11 includes a resin body main body 90 having an L shape as a whole when viewed from above. The resin body main body 90 has first and second component accommodating portions 90A and 90B on both side surfaces adjacent to each other with an outer corner portion interposed therebetween, and is disposed on the short side of the L-shape of the resin body main body 90. The first resin cover 91 is assembled to the resin body main body 90 so as to close the side opening of the one-component storage section 90A, while the side surface of the second component storage section 90B disposed on the long side of the L-shape of the resin body main body 90. A second resin cover 92 is assembled to the resin body main body 90 so as to close the opening. The resin body 11 is composed of the first and second resin covers 91 and 92 and the resin body main body 90.

  The first resin cover 91 is provided with a side protruding wall 91A that protrudes toward the second resin cover 92. After the second resin cover 92 is first attached to the resin body main body 90, the second resin cover 91 is provided. The edge portion of the first resin cover 91 is assembled on the edge portion of 92 from the outside.

  As shown in FIG. 1, a sheet metal cover 93 (corresponding to the “metal plate” of the present invention) is fixed to the outer surface of the first resin cover 91 in an overlapping manner. The sheet metal cover 93 is a pressed product of sheet metal, and has a structure in which the sub plate part 82 is bent at a right angle from one side edge part of the main plate part 81 as shown in FIG. The main plate portion 81 is overlaid on the outer surface of the portion facing the back wall 90C of the first component housing portion 90A, and the side surface of the first resin cover 91 opposite to the second resin cover 92 as shown in FIG. The sub-plate part 82 is overlaid on.

  As shown in FIG. 1, a latch mechanism accommodating recess 91B is formed in a portion of the first resin cover 91 that is covered by the main plate portion 81, and a latch 13 described later that constitutes the latch mechanism 10R is formed in the latch mechanism accommodating recess 91B. And the ratchet 14 (refer FIG. 6) is accommodated. Further, a groove main body 12A extending in the horizontal direction is formed in the inner surface of the latch mechanism housing recess 91B in the first resin cover 91, and a horizontal groove is formed in a portion of the main plate 81 facing the groove main body 12A. 12B is formed. The striker receiving groove 12 is constituted by the groove main body 12A and the horizontal groove 12B, and one end portion of the striker receiving groove 12 is opened to the side protruding wall 91A to form a striker receiving port 12K.

  As shown in FIG. 3, a sheet metal reinforcing plate 94 is stacked on the inner surface of the first resin cover 91, and a pair of metal rotation support pins 13 </ b> J between the reinforcing plate 94 and the sheet metal cover 93. The sheet metal cover 93 and the reinforcing plate 94 are fixed to the first resin cover 91 by being connected by 14J. As shown in FIG. 6, one rotation support pin 13 </ b> J is disposed above the striker receiving groove 12, and the other rotation support pin 14 </ b> J is disposed below the striker receiving groove 12. The latch 13 is rotatably supported by the upper rotation support pin 13J, while the ratchet 14 is rotatably supported by the lower rotation support pin 14J.

  As shown in FIG. 3, a support protrusion 95 protrudes from the lower end of the inner surface of the first resin cover 91. As shown in FIG. 5, the support protrusion 95 includes a first cylindrical portion 95A protruding from the first resin cover 91 and a second cylindrical portion 95C protruding from a distal end wall 95B that closes the distal end of the first cylindrical portion 95A. And. The second cylindrical portion 95C is disposed at a position that is eccentric downward with respect to the center of the first cylindrical portion 95A.

  As shown in FIG. 4, the resin body main body 90 is formed with a rotation support cylinder 96 protruding from the back wall 90 </ b> C of the first component housing portion 90 </ b> A. The rotation support cylinder 96 has a cylindrical shape with an open end, and a through hole 96A is formed at the center of the back wall 90C surrounded by the rotation support cylinder 96. When the first resin cover 91 is assembled to the resin body main body 90, the second cylindrical portion 95C is inserted into the rotation support cylinder 96, and the screw N2, which is a self-tapping screw inserted into the through hole 96A, is inserted into the first cylindrical cover 95. By fastening to the two cylindrical portions 95C, the first resin cover 91 is fixed to the resin body main body 90, and the second cylindrical portion 95C and the rotation support cylinder 96 are integrated to constitute the support shaft 97 according to the present invention. Is done.

  As shown in FIG. 3, screw holes 94N are also formed in the upper end portion of the reinforcing plate 94, and the first resin housing 91 is assembled to the resin body main body 90, and the back of the first component housing portion 90A. The first resin cover 91 is also fixed to the resin body main body 90 by tightening a screw N1 passed through a through hole (not shown) provided in the wall 90C into the screw hole 94N.

  In the door lock device 10, the sheet metal cover 93 is directed to the inner surface of the end wall (not shown) of the door so that the sub plate portion 82 faces the exterior wall side of the door, while the second resin cover 92 is disposed inside the door. It arrange | positions in the door inside in the state facing the wall side (refer FIG. 2). Then, the door lock device 10 is fixed to the door by tightening the bolt passed through the through hole provided in the end wall of the door to the screw hole N3 (see FIG. 1) of the sheet metal cover 93. The striker receiving groove 12 of the door lock device 10 is overlapped with a notch groove (not shown) provided in the door. Then, the striker 15 (see FIG. 6) provided on the inner surface of the door frame of the vehicle main body enters the striker receiving groove 12 from the striker receiving port 12K when the door is closed.

  The striker 15 as a whole has, for example, a gate structure in which a wire having a circular cross section is bent, and a pair of leg portions of the gate structure protrude from the inner surface of the door frame and are arranged in the inner and outer directions. Then, a latch 13 described below engages with one of the pair of legs of the striker 15 arranged on the outer side. 6 and 7 show only a portion of the striker 15 that engages with the latch 13.

  As shown in FIG. 6, the latch 13 has first and second locking claws 13A and 13B which are parallel to each other, and a striker is received between the first and second locking claws 13A and 13B. Part 13C. And the rotation support pin 13J mentioned above has penetrated the part which connects 1st and 2nd latching claw 13A, 13B among the latches 13. As shown in FIG.

  The latch 13 is biased in the unlatching direction (clockwise direction in FIG. 6) by a torsion coil spring (not shown) provided between the resin body 11 and the latch 13. When the door is opened, the latch 13 is positioned at the unlatched position (the position shown in FIG. 6) by the contact between the stopper contact portion 13D provided on the latch 13 and the stopper 11X provided on the resin body 11. The

  In the unlatched position, the first locking claw 13A is retracted above the striker receiving groove 12 and the second locking claw 13B crosses the striker receiving groove 12, and the open end of the striker receiving portion 13C is the striker. It faces the striker receiving port 12K side of the receiving groove 12. The striker 15 that has entered the striker receiving groove 12 is received in the striker receiving portion 13C, and the striker 15 pushes the second locking claw 13B to rotate the latch 13 in the latch direction (counterclockwise direction in FIG. 6). Move. As a result, as shown in FIG. 7, the striker receiving slot 12 </ b> K side of the striker receiving groove 12 from the striker 15 is closed by the first locking claw 13 </ b> A, and the latch 13 is engaged with the striker 15.

  The ratchet 14 is rotatably supported by the rotation support pin 14J as described above, and includes the latch rotation restricting piece 14A and the stopper piece 14B protruding in opposite directions. Further, the ratchet 14 is urged counterclockwise in FIG. 6 by a torsion coil spring 14S. Thereby, the ratchet 14 is normally positioned at the origin position where the stopper piece 14B is in contact with the ratchet stopper 11D provided in the resin body 11. At this origin position, the latch rotation restricting piece 14A of the ratchet 14 interferes with the first locking claw 13A and the second locking claw 13B of the latch 13, and the ratchet 14 is rotated clockwise from the origin position and released. When the position is reached, the latch rotation restricting piece 14A of the ratchet 14 and the first locking claw 13A and the second locking claw 13B of the latch 13 do not interfere with each other. As shown in FIG. 3, the first cylindrical portion 95 </ b> A of the support protrusion 95 described above passes through the inside of the coil portion of the torsion coil spring 14 </ b> S.

  When the door is closed from the opened state, the ratchet 14 is engaged with the latch 13 as follows. That is, when the door is closed, the second locking claw 13B and the first locking claw 13A of the latch 13 that is pushed and rotated by the striker 15 sequentially pass down the latch rotation restricting piece 14A of the ratchet 14. To do. When the door reaches a position where the soundproof member between the door frame and the door frame is crushed to the maximum extent, the latch 13 is overloaded with the second locking claw 13B slightly separated from the latch rotation restricting piece 14A of the ratchet 14. The stroke position is reached, whereby the ratchet 14 returns to the origin position. When the door is pushed back by the resilient force of the soundproof member, the latch rotation restricting piece 14A of the ratchet 14 comes into contact with the first locking claw 13A of the latch 13 from the opposite side of the striker receiving portion 13C, and the latch 13 is Positioned at the latch position. As a result, the latch 13 is in a fully latched state in which the rotation in the latch releasing direction is restricted, and the door is held in the fully closed state.

  The rotation restriction of the latch 13 by the ratchet 14 is released by any operation of an outside door handle (not shown) provided on the exterior surface of the door and an inside door handle (not shown) provided on the interior surface (vehicle inner surface) of the door. can do. In order to transmit the operation force from the outside door handle and the inside door handle to the ratchet 14, the lift lever 16 shown in FIG. 8A is attached to the ratchet 14 so as to rotate integrally. .

  Specifically, as shown in FIG. 3, the lift lever 16 is pivotally supported by a portion of the rotation support pin 14 </ b> J sandwiched between the first resin cover 91 and the reinforcing plate 94. Further, as shown in FIG. 8 (A), the lift lever 16 has a rotation support pin 14J and a striker receiving groove 12 (see FIG. 6) on the striker receiving port 12K side (hereinafter referred to as “front side”). A first tilting arm 16A that protrudes toward the rear side (referred to as “rear side”) and a second tilting arm 16C that protrudes obliquely downward on the rear side from the rotation support pin 14J are provided. Then, the engagement protrusion 16K bent at a right angle from the upper edge of the second tilting arm 16C in the axial direction of the rotation support pin 14J engages with the engagement hole 14C (see FIG. 6) provided in the latch 14 in an uneven manner. Thus, the lift lever 16 rotates integrally with the ratchet 14. Further, the first tilt arm 16A is provided with a tip contact portion 16B formed by bending the front end portion in the axial direction of the rotation support pin 14J, and the rear end portion of the second tilt arm 16C is rotated. An abutting protrusion 16D is provided that is bent in the axial direction of the support pin 14J and protrudes obliquely downward on the front side from the second tilting arm 16C.

  The above-described support shaft 97 is disposed at an obliquely lower position behind the rotation support pin 14J, and the outside open lever 17 is rotatably supported by the support shaft 97. The outside open lever 17 corresponds to an “open lever” of the present invention, and includes a support arm 17A that protrudes forward from the support shaft 97 and an operation arm 17D that protrudes rearward from the support shaft 97. The outside open lever 17 is restricted in its rotation range by a stopper (not shown), and the origin position shown in FIGS. 8A and 8B and the timepiece shown in FIG. It rotates between the operation position (refer FIG. 9 (A) and FIG. 9 (B)) rotated in the rotation direction. Further, when the outside open lever 17 is disposed at the origin position, the support arm 17A is inclined forward and downward (see FIG. 8A), and when the outside open lever 17 is in the operating position, the support arm 17A. Approaches a horizontal posture and becomes a posture slightly inclined forward and downward (see FIG. 9A). Further, the outside open lever 17 is urged toward the origin position side by a torsion coil spring 18 shown in FIGS. 3, 4 and 8A.

  An engagement hole 17B is formed through the front end of the support arm 17A in a direction parallel to the axial direction of the support shaft 97. The engagement hole 17B has a shape in which a pair of mountain-shaped protrusions 17T and 17T protrude from the two holes 180 degrees apart from each other on the inner peripheral surface of the circular hole.

  From the lower edge portion of the front end of the support arm 17A, the pressure receiving piece 17C is bent in the axial direction of the support shaft 97 and protrudes. When the inside door handle is operated, an inside open lever 20 (to be described later) contacts the pressure receiving piece 17C from below to rotate the outside open lever 17 from the origin position to the operating position.

  As shown in FIG. 3, the engaging portion 17E is bent at a right angle in the axial direction of the support shaft 97 and protrudes toward the main plate portion 81 from the upper edge portion of the rear end of the operation arm 17D. A through hole is formed in the engaging portion 17E, and a resin ring 17V is attached to the through hole. One end of a rod (not shown) is connected to the inside of the resin ring 17V, and the other end of the rod is connected to the outside door handle. When the outside door handle is operated, the engaging portion 17E is pushed downward, and the outside open lever 17 rotates from the origin position to the operating position.

  As shown in FIG. 8 (A), the engagement protrusion 19A of the open link 19 is rotatably engaged with the engagement hole 17B of the outside open lever 17. The open link 19 has a shape extending as a whole in the up-down direction, and the above-described engaging protrusion 19 </ b> A protrudes from the lower end portion in the axial direction of the support shaft 97. The opening range of the open link 19 is restricted by the pair of mountain-shaped protrusions 17T and 17T described above in the engagement hole 17B, and between the unlock position that has fallen forward and the lock position that has fallen rearward. Rotate. A torsion coil spring 29 (not shown in FIGS. 8B, 9A, and 9B) is provided between the open link 19 and the outside open lever 17, and the torsion coil spring 29 The open link 19 is biased toward the unlock position.

  From the upper edge of the open link 19, a push-up protrusion 19 </ b> C is bent and protrudes in the axial direction of the support shaft 97. When the open link 19 is disposed at the unlock position, as shown in FIG. 8B, the push-up protrusion 19C is located below the tip contact portion 16B of the lift lever 16, and in this state, the outside When the open lever 17 rotates from the origin position to the operating position, the push-up protrusion 19C pushes up the tip contact portion 16B of the lift lever 16 as shown in FIG. 9B. As a result, the lift lever 16 rotates together with the ratchet 14 (see FIG. 7) from the origin position to the release position, the engagement between the ratchet 14 and the latch 13 is released, and the door is opened.

  On the other hand, when the open link 19 is disposed at the lock position, the push-up protrusion 19C is displaced from the tip contact portion 16B of the lift lever 16 toward the rotation support pin 14J as shown in FIG. Therefore, even if the outside open lever 17 rotates from the origin position to the operating position in this state, the push-up protrusion 19C pushes up the tip contact portion 16B of the lift lever 16 as shown in FIG. Disappears. That is, when the open link 19 is disposed at the lock position, the door cannot be opened even if the outside door handle is operated.

  A lower end arm 19F protrudes forward from a position near the lower end of the open link 19, and an unlocking piece 19B is bent in the axial direction of the support shaft 97 and protrudes forward from a lower edge portion of the lower end arm 19F. The open link 19 is switched from the unlocked position to the locked position by pushing up the unlocking piece 19B upward by an active lever 25 described later.

  When the door is closed with the open link 19 placed in the locked position, the abutting protrusion 16D of the lift lever 16 that rotates together with the ratchet 14 in the closing process of the door presses the open link 19 from the rear. To move to the unlock position. That is, the door lock device 10 according to the present embodiment is provided with a cancel function that cancels the locked state when the door is closed in the locked state.

  The inside open lever 20, the active lever 25, the connecting bar 30, the relay lever 31, and the like shown in FIG. 10 are housed in the second component housing portion 90B of the resin body main body 90 described above. In the following description of each component, the surface facing the second resin cover 92 (the surface facing the front side of the paper in FIG. 10) is referred to as the “outer surface” of the component, and the opposite surface is the component. The "inner side" of

  The inside open lever 20 is rotatably supported by a resin support shaft 20J disposed near the lower right end in FIG. 10 in the second component housing portion 90B. The resin support shaft 20J is formed by fitting a shaft body and a cylinder projecting from the back surface of the second component housing portion 90B and the back surface of the second resin cover 92. The same applies to resin support shafts 24J and 25J described later. Further, the inside open lever 20 includes a push-up contact portion 20B extending from the resin support shaft 20J toward the lateral center of the resin body 11 and having a tip bent in the axial direction of the resin support shaft 20J. A connecting protrusion 20C that protrudes downward from the contact portion 20B and has a wire locking portion 20A at the tip is provided. An inside door handle is connected to the wire locking portion 20A via a wire (not shown). Then, by operating the inside door handle, the inside open lever 20 rotates from the origin position to the operating position, and during that time, the push-up contact portion 20B of the inside open lever 20 pushes up the pressure receiving piece 17C of the outside open lever 17 described above. The outside open lever 17 also rotates from the origin position to the operating position. At this time, if the open link 19 is disposed at the unlock position, the door is opened as described above, and if the open link 19 is disposed at the lock position, the door is not opened.

  The active lever 25 is rotatably supported by the resin support shaft 25J located at the center in both the vertical and horizontal directions in the second component housing portion 90B. The active lever 25 includes a first fan-shaped projecting piece 25A projecting upward from the resin support shaft 25J, a fan-shaped second fan-shaped projecting piece 25D projecting obliquely downward to the left from the resin support shaft 25J, and a resin support shaft 25J. And an active action arm 25C projecting diagonally to the right.

  As shown in FIG. 10, the tip of the active action arm 25 </ b> C faces the unlocking piece 19 </ b> B in the open link 19 from below. When the active lever 25 rotates from the unlocked position to the locked position, the active action arm 25C pushes up and opens the unlocking piece 19B, as shown in the change from FIG. 8B to FIG. 8A. The link 19 is moved from the unlock position to the lock position.

  As shown in FIG. 10, a wire coupling piece 25E projects from the lower end of the second fan-shaped protrusion 25D. A lock operation part provided on the inner surface of the door is connected to the wire coupling piece 25E via a wire (not shown). The active lever 25 can be switched between the unlock position and the lock position by operating the lock operation unit.

  The active lever 25 can be switched between an unlocked position and a locked position by a central lock in the vehicle or a wireless key in addition to the lock operation portion on the inner surface of the door. For this purpose, the motor 22 shown in FIG. 10 is attached to the resin body 11. A worm gear 23 is fixed to a rotation output shaft of the motor 22, and a worm wheel 24 meshing with the worm gear 23 is rotatably supported with respect to a resin support shaft 24 </ b> J provided in the resin body main body 90. Then, a pair of rotation pressing protrusions 24A (only one rotation pressing protrusion 24A is shown in FIG. 10) provided on the worm wheel 24 and irregularities (not shown) provided on the inner surface of the first fan-shaped protrusion 25A. By engaging with the portion, the power of the motor 22 can be transmitted to the active lever 25, and the active lever 25 can be switched between the locked position and the unlocked position.

  The active lever 25 can be switched between the unlock position and the lock position by a key cylinder provided in the door. As shown in FIG. 1, the key connecting lever 32 connected to the key cylinder is disposed on the back side of the resin body main body 90, and its rotation shaft penetrates the resin body main body 90, as shown in FIG. The relay lever 31 is connected to the second component housing portion 90B. The relay lever 31 and the active lever 25 are connected by a connecting bar 30. Accordingly, the active lever 25 is switched between the unlock position and the lock position also by operating the key cylinder.

  Now, the door lock device 10 of the present embodiment has the following configuration in order to prevent the door latch from being released due to a side collision of the vehicle. That is, as shown in FIGS. 1 and 11, the sheet metal cover 93 is formed with a lower end protrusion 84 having an L-shaped cross section by extending the corners of the main plate portion 81 and the sub plate portion 82 downward. . Then, as shown in FIG. 12, a restricting portion 85 protruding obliquely downward on the side away from the main plate portion 81 is provided at the lower end portion of the sub plate portion 82 constituting the lower end protrusion 84, and the restricting portion 85 is shown in FIG. 13, the outside open lever 17 is disposed adjacent to the front side of the engaging portion 17E.

  Further, as shown in FIG. 8A, a guide protrusion 17X (“guide portion” according to the present invention ”is formed on the upper edge portion of the outside open lever 17 in front of the support shaft 97 that is the rotation center. And "corresponding to a" guide protrusion "). Specifically, the guide protrusion 17X is formed by, for example, bending a protrusion protruding upward from the support arm 17A of the outside open lever 17 to the same side as the engaging portion 17E, and with respect to the support shaft 97. Are arranged in front of the horizontal direction. Further, the upper surface of the guide protrusion 17X is an emergency sliding contact portion 17Y according to the present invention, and the front open lever 17 is disposed at the origin position (the state shown in FIG. 8A). Inclined downward.

  As shown in FIG. 3, the first resin cover 91 is provided with a guide standby portion 98X according to the present invention corresponding to the above-described guide protrusion 17X. The guide standby portion 98X has a cantilever shape protruding from the inner surface of the first resin cover 91 in the rotation axis direction of the outside open lever 17. Further, as shown in FIG. 14, the guide standby portion 98X is a region outside the rotation region R1 of the guide protrusion 17X, and is in a horizontal direction with respect to the guide protrusion 17X in the outside open lever 17 at the origin position. It is arranged in the front. Further, the lower surface of the guide standby portion 98X is an emergency sliding contact portion 98Y according to the present invention, and is parallel to the emergency sliding contact portion 17Y of the guide projection 17X in the outside open lever 17 at the origin position. Inclined downward. Further, the line L1 extending in the horizontal direction from the upper end position P1 of the emergency sliding contact portion 98Y of the guide standby portion 98X passes through the intermediate portion in the vertical direction of the emergency sliding contact portion 17Y of the guide projection 17X. Is arranged.

  This completes the description of the configuration of the door lock device 10 of the present embodiment. Next, the function and effect of the door lock device 10 will be described. When the lock of the door lock device 10 is released by a central lock in the vehicle or a lock operation part on the inner surface of the door, the outside open lever 17 is moved by the operation of the inside door handle or the outside door handle as described above. The open link 19 connected to the front end of the outside open lever 17 rotates from the origin position shown in FIG. 8B to the operation position shown in FIG. The ratchet 14 (see FIG. 6) rotates together with the lift lever 16 and the latch of the latch mechanism 10R is released.

  Now, when the door lock device 10 is unlocked and a side collision occurs during traveling, the rod that communicates between the engaging portion 17E of the outside open lever 17 and the outside door handle is located on the interior surface side of the door. As a result, the outside open lever 17 may be pushed toward the interior surface of the door.

  However, in the door lock device 10 of the present embodiment, even if the outside open lever 17 is pushed to the interior surface side of the door due to a side collision, the engaging portion 17E of the outside open lever 17 is attached to the end wall of the door. Since the forward movement of the outside open lever 17 is restricted by abutting against the restricting portion 85 of the fixed sheet metal cover 93, the latch release of the door due to a side collision of the vehicle, which may be a problem with the conventional door lock device, is prevented. It is prevented. Moreover, in the present embodiment, the corners of the main plate portion 81 and the sub plate portion 82 of the sheet metal cover 93 are extended downward to form a lower end protrusion 84 having an L-shaped cross section, and the lower end protrusion 84 is configured. Since part of the sub plate portion 82 is the restricting portion 85, the main plate portion 81 alone or only the sub plate portion 82 is extended downward and the lower end portion thereof is made higher than the restriction portion 85. be able to.

  Here, if the restricting portion 85 is pushed by the outside open lever 17 and deformed due to a side collision, the support shaft 97 is bent and the outside open lever 17 moves horizontally forward as shown in FIG. Can occur. However, even if such a situation occurs, the emergency sliding contact portion 17Y of the guide protrusion 17X provided on the outside open lever 17 is in contact with the emergency standby contact of the guide standby portion 98X provided on the resin body 11. By sliding in surface contact with the portion 98Y, the outside open lever 17 is guided so as to be restricted from rotating from the origin position toward the operating position, and the front end portion of the open lever 17 pushes up the open link 19 Thus, a situation in which the latch by the latch mechanism 10R is released can be prevented. In the present embodiment, the guide protrusion 17X and the guide standby part 98X are arranged on the interior wall side of the door with respect to the support shaft 97, so that the guide part and the guide standby part are located with respect to the support shaft. Compared to the case of being disposed on the outer surface side of the vehicle, even if the metal plate is deformed sideways and the support shaft is bent, the guide protrusion 17X and the guide standby portion 98X are deformed. Damage can be prevented. As described above, the door lock device 10 according to the present embodiment can prevent the door from being unlatched due to a side collision.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and can be implemented with various modifications other than those described above without departing from the scope of the invention.

  (1) As the “door” of the present invention, for example, the present invention may be applied to a side door or a back door.

  (2) In the above embodiment, the “support shaft” according to the present invention is constituted by the second cylindrical portion 95 </ b> C formed on the first resin cover 91 and the rotation support cylinder 96 protruding from the resin body main body 90. However, the “support shaft” according to the present invention is not limited to resin, and includes, for example, a sheet metal cover that covers the outside open lever 17 from the end wall side of the door. The structure provided with the product spindle may be sufficient.

  (3) In the embodiment, the guide standby portion 98X is formed on the resin body 11, but the guide standby portion may be formed on the sheet metal cover 93. Further, a part of the outside open lever 17 (corresponding to the “guide portion” of the present invention) is brought into sliding contact with the guide standby portion so that the outside open lever 17 rotates from the origin position toward the operating position. The structure which controls moving may be sufficient.

DESCRIPTION OF SYMBOLS 10 Door lock apparatus 10R Latch mechanism 11 Resin body 13 Latch 14 Ratchet 17 Outside open lever (open lever)
17E Engagement portion 17X Guide protrusion 17Y, 98Y Emergency sliding contact portion 81 Main plate portion 82 Sub plate portion 93 Sheet metal cover (metal plate)
97 Support shaft 98X Guide stand-by part

Claims (4)

A latch mechanism capable of latching the vehicle door in a closed state;
A resin body containing the latch mechanism;
An open lever rotatably supported on a support shaft of the resin body;
A metal plate fixed to the resin body,
The door handle of the door is linked to one end of the open lever that is directed to the outside of the vehicle, and the open lever is rotated from the origin position to the operating position by operating the door handle with the door closed. In the door lock device capable of releasing the latch of the door by the latch mechanism,
A guide portion provided on the open lever;
An inner wall of the vehicle that is provided on the resin body or the metal plate and is outside the rotation region in the operating position from the origin position of the guide portion with respect to the guide portion in the open lever at the origin position. A guide standby unit arranged on the side,
When the open lever moves relative to the resin body or the metal plate toward the inner wall side of the vehicle, the open lever is moved away from the origin position by sliding the guide portion against the guide standby portion. A door lock device that is guided so as to be restricted from rotating toward the operating position. A latch mechanism capable of latching the vehicle door in a closed state;
A resin body containing the latch mechanism;
An open lever rotatably supported on a support shaft of the resin body;
The door handle of the door is linked to one end of the open lever that is directed to the outside of the vehicle, and the open lever is rotated from the origin position to the operating position by operating the door handle with the door closed. In the door lock device capable of releasing the latch of the door by the latch mechanism,
A guide protrusion protruding from the inner wall side portion of the vehicle from the rotation center of the open lever;
The resin body is provided on the inner wall side of the vehicle with respect to the guide protrusion of the open lever at the origin position in a region outside the rotation area at the operating position from the origin position of the guide protrusion. An arranged guide standby unit,
Provided on one surface of the guide protrusion and an opposing surface of the guide standby portion that faces the one surface of the guide protrusion, the open lever is moved relative to the resin body toward the inner wall of the vehicle A door lock device comprising: an emergency sliding contact portion that guides the sliding movement of the open lever so as to restrict the rotation of the open lever from the origin position toward the operating position.   3. The door lock device according to claim 2, wherein the emergency sliding contact portion is configured by inclining one surface of the guide protrusion and a facing surface of the guide standby portion in parallel with each other.   The door lock device according to claim 1, wherein the guide portion and the guide standby portion are disposed on an inner wall side of the vehicle with respect to the support shaft.

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