JP4802341B2 - Door lock device - Google Patents

Description

  The present invention relates to a door lock device that is applied to a vehicle such as a four-wheeled vehicle. It is interposed between the latch mechanism to be controlled and the door handle to the latch mechanism, and when the door handle is opened in the unlocked state, this is transmitted to the latch mechanism to release the latched state and the door The door lock device is provided with a lock mechanism that maintains the latched state of the latch mechanism even when the door handle is opened when the door handle is opened. is there.

  In recent years, in order to improve operability, a door lock device in which a lock mechanism is switched between a locked state and an unlocked state by a lock actuator has been provided. Furthermore, in this type of door lock device, a device that attempts to improve the anti-theft property of a vehicle by omitting a lock operation member for switching between a locked state and an unlocked state in a room is being realized. That is, according to the door lock device in which the indoor lock operation member is omitted, it is difficult to switch the lock mechanism in the locked state to the unlocked state even if the window glass is broken, so that the anti-theft property of the vehicle Can be improved.

  However, when the lock operation member is omitted, for example, if a problem occurs in the drive system or power supply system of the lock actuator, it becomes difficult to switch the lock mechanism to the locked state, and it becomes impossible to leave the vehicle. Will be invited. For this reason, conventionally, an operation button is provided at a position where the door is closed when the door is disposed at the closed position, and the lock mechanism is locked by operating the operation button. According to such a door lock device, not only can the operability be improved by the lock actuator, but also the operation button can be operated even when a malfunction occurs in the drive system or power supply system of the lock actuator. Thus, the lock mechanism can be locked. Since the operation button can be operated only when the door is opened, the anti-theft property of the vehicle is not affected (see, for example, Patent Document 1).

Special Table 2000-500836

  Incidentally, some door lock devices applied to vehicles are provided with a so-called one-motion or double-action mechanism. These mechanisms are designed to switch the lock mechanism in the locked state to the unlocked state by opening the inside door handle without operating the lock operation member, facilitating the unlocking operation of the lock mechanism. It is extremely effective in doing so. Specifically, in a door lock device provided with a one-motion mechanism, even if the lock mechanism is in a locked state, if the inside door handle is operated to open the door, the lock mechanism is unlocked, and then continues. The latch mechanism is released. On the other hand, in a door lock device equipped with a double action mechanism, when the lock mechanism is in the locked state, it is unlocked if the inside door handle is once opened, and is latched by opening the inside door handle again. The mechanism is released.

  However, when these one-motion mechanism and double-action mechanism are applied to the door lock device described above, the anti-theft property may be impaired. In other words, even if the lock mechanism is locked by operating the operation button, if the inside door handle is opened once or twice, the door is released. For example, a malicious object breaks the window glass. Then, if the inside door handle is operated, entry into the room is allowed. In the end, it is difficult to apply a mechanism for facilitating an unlocking operation, such as a one-motion mechanism or a double action mechanism, in order to ensure the vehicle's anti-theft property in the door lock device described above.

  In view of the above circumstances, an object of the present invention is to provide a door lock device capable of improving the operability after securing the anti-theft property of a vehicle.

In order to achieve the above object, the door lock device according to claim 1 of the present invention is in a latched state when the door is disposed at the closed position with respect to the vehicle body, and moves the door in the opening direction. It is interposed between the latch mechanism to be controlled and the door handle to the latch mechanism, and when the door handle is operated to open in the unlocked state, this is transmitted to the latch mechanism to release the latched state. A lock mechanism that allows the door to move in the opening direction, and maintains the latched state of the latch mechanism even when the door handle is opened when the door is locked; In a door lock device including a lock actuator that switches to an unlocked state, the door lock device is interposed between an inside door handle disposed indoors and the lock mechanism, and A child lock mechanism that can be switched between a transmission state in which the opening operation of the side door handle is transmitted to the locking mechanism and a non-transmission state in which the opening operation of the inside door handle is not transmitted to the locking mechanism, and the door is opened. A switching operation lever that can be operated in the closed state and that cannot be operated when the door is placed in the closed position, and the switching operation lever that switches the child lock mechanism between the transmission state and the non-transmission state when operated. Arranged on the operating area of the control lever, after the child lock mechanism is switched from the transmission state to the non-transmission state, the lock mechanism is locked when the switching operation lever is further moved to a predetermined emergency lock position. and a lock lever to switch the state, the switching operation lever, the child lock mechanism from the transfer state While the time of switching operation to transfer state is spaced apart from the locking lever, when it is placed in emergency locking position and switches the lock mechanism to the locked state in contact with the lock lever.

  According to the present invention, even when the lock actuator cannot be switched to the locked state, the lock mechanism can be switched to the locked state by operating the switching operation lever, and the door maintains the closed position. Will be able to. Moreover, even if the inside door handle is operated to open after the window glass is broken, the child lock mechanism is not transmitted, so that the door opening operation is not transmitted to the lock mechanism. Since the switching operation lever can be operated only when the door is opened, there is no fear that it will be operated. Therefore, even when applied to the one configured to switch the lock mechanism from the locked state to the unlocked state by operating the inside door handle in order to improve operability, if the lock mechanism is in the locked state by the switching operation lever, The lock mechanism is not switched to the unlocked state by opening the inside door handle. As a result, the anti-theft property of the vehicle can be remarkably improved.

  Exemplary embodiments of a door lock device according to the present invention will be explained below in detail with reference to the accompanying drawings.

  1 to 3 conceptually show a door lock device according to an embodiment of the present invention. The door lock device illustrated here is provided on the door D of the front hinge disposed on the right side of the rear seat in the vehicle main body B of the four-wheeled vehicle as shown in FIG. 4, and as shown in FIG. A latch mechanism 20 is provided inside a latch case 21 attached to the case 10.

  As shown in FIGS. 4 and 5, the latch mechanism 20 is for engaging and holding the striker S provided in the vehicle main body B. The latch mechanism 20 includes a latch 22 and a ratchet 23 as shown in FIG. It is.

  The latch 22 is disposed at a position above the striker entry groove 21a formed in the latch case 21 so as to be rotatable via a latch shaft 24 extending substantially horizontally along the front-rear direction of the vehicle body B. It is. The latch 22 is provided with a meshing groove 22a, a hook portion 22b, and a locking portion 22c. The meshing groove 22a is formed from the outer peripheral surface of the latch 22 toward the latch shaft 24, and has a width that can accommodate the striker S. The hook portion 22b is a portion located on the indoor side of the engagement groove 22a when the engagement groove 22a is opened downward. As shown by the solid line in FIG. 5, the hook portion 22b stops at a position crossing the striker entry groove 21a of the latch case 21 when the latch 22 is rotated counterclockwise as much as possible. As indicated by the dashed line, the latch 22 is configured to stop at a position where the striker entry groove 21a is opened when the latch 22 is rotated clockwise as much as possible. The locking portion 22c is a portion located on the outdoor side of the engagement groove 22a when the engagement groove 22a is opened downward. As shown by a two-dot chain line in FIG. 5, the locking portion 22c crosses the striker entry groove 21a when the latch 22 is rotated clockwise as much as possible, and is located behind the striker entry groove 21a (outdoor). ) In such a manner that it is gradually tilted upward toward. Although not clearly shown in the drawing, a latch spring is provided between the latch 22 and the latch case 21 to urge the latch 22 in the clockwise direction in FIG.

  The ratchet 23 is located via a ratchet shaft 25 extending substantially horizontally along the front-rear direction of the vehicle body B at a position below the striker entry groove 21a of the latch case 21 and on the indoor side of the latch shaft 24. It is arranged to be rotatable. The ratchet 23 is provided with an engaging portion 23a and an action portion 23b. The engaging portion 23a is a portion extending radially outward from the ratchet shaft 25 toward the outdoor side, and is rotated about the ratchet shaft 25 to thereby engage the hook portion 22b of the latch 22 described above via its protruding end surface. It is possible to detachably engage with the locking portion 22c. The action part 23b is a part that extends radially outward from the ratchet shaft 25 toward the indoor side. The ratchet 23 is provided with a ratchet lever 26 that rotates integrally with the ratchet shaft 25 around the axis of the ratchet shaft 25 at a position on the front side of the vehicle. The ratchet lever 26 has a contact portion 26 a extending from the ratchet shaft 25 in the same direction as the action portion 23 b of the ratchet 23. Although not clearly shown in the drawing, a ratchet spring is provided between the ratchet 23 and the latch case 21 to urge the ratchet 23 counterclockwise in FIG. 5 at all times.

  In the latch mechanism 20 configured as described above, when the door D is in an open state with respect to the vehicle body B as shown by a two-dot chain line in FIG. 4, as shown by a two-dot chain line in FIG. The latch 22 is disposed at a position where the striker entry groove 21a is opened. When the door D is moved to the closed position from this state as shown by the solid line in FIG. 4, the striker S provided in the vehicle body B enters the striker entry groove 21a of the latch case 21 as shown in FIG. Eventually, the striker S comes into contact with the locking portion 22 c of the latch 22. As a result, the latch 22 rotates counterclockwise in FIG. 5 against the elastic force of the latch spring (not shown). During this time, the ratchet 23 is such that the protruding end surface of the engaging portion 23a is in sliding contact with the outer peripheral surface of the latch 22 by the elastic force of the ratchet spring (not shown), and the ratchet shaft 25 is appropriately selected according to the outer peripheral surface shape of the latch 22. Rotate around the axis. When the door D is further moved in the closing direction from the above-described state, the amount of the striker S entering the striker entry groove 21a gradually increases, eventually the engagement portion 23a of the ratchet 23 reaches the engagement groove 22a of the latch 22, and then As shown by the solid line in FIG. 5, the hook portion 22b of the latch 22 comes into contact with the engaging portion 23a of the ratchet 23, so that the clock of the latch 22 is resisted against the elastic restoring force of a latch spring (not shown). Rotation around is prevented. In this state, since the hook portion 22b of the latch 22 is disposed so as to cross the striker entry groove 21a, the striker S is moved by the hook portion 22b in a direction away from the back (outdoor) of the striker entry groove 21a. As a result, the door D is kept closed with respect to the vehicle body B (latched state).

  On the other hand, when the contact portion 26a of the ratchet lever 26 is rotated upward in FIG. 5 against the elastic force of the ratchet spring (not shown) from the above-described latched state, the engagement between the hook portion 22b of the latch 22 and the ratchet 23. The abutting engagement state with the joining portion 23a is released, and the latch 22 rotates clockwise in FIG. 5 by the elastic restoring force of a latch spring (not shown). As a result, as indicated by a two-dot chain line in FIG. 5, the striker intrusion groove 21a is opened, and the striker S can be moved in a direction away from the striker intrusion groove 21a, and the door D is opened and moved relative to the vehicle body B. To be able to.

  Further, as shown in FIG. 1, the door lock device is provided with an open lever 11, an inside handle lever 12, and a lock mechanism 30 inside a main body case 10.

  Although not shown in the drawing, the open lever 11 is rotatably arranged via an open lever shaft extending substantially horizontally along the front-rear direction of the vehicle main body B. It has a portion 11b. The operating end portion 11 a of the open lever 11 is disposed in a region below the contact portion 26 a of the ratchet lever 26. The pressure receiving portion 11b of the open lever 11 is a portion that extends downward from the operation end portion 11a and then curves upward. When the outside door handle ODH (see FIG. 4) provided on the outer surface of the door D is operated to open the open lever 11, the open lever 11 is appropriately rotated via a link, and the operation end portion 11a and the pressure receiving portion 11b are illustrated. 1 is operated upward. Although not shown in the figure, an open lever spring is provided between the open lever 11 and the body case 10 to urge the operation end portion 11a and the pressure receiving portion 11b downward in FIG. is there.

  The inside handle lever 12 is disposed at a position ahead of the vehicle from the open lever 11 so as to be swingable via an inside lever shaft 13 extending substantially horizontally along the left-right direction of the vehicle body B. The working end portion 12a and the inhan lock link portion 12b are provided. The action end portion 12a is a portion extending downward from the inside lever shaft 13, and an inside door handle IDH (see FIG. 4) is linked to the front end portion through an appropriate link. The action end 12a is configured such that the inside handle lever 12 swings clockwise in FIG. 1 when the inside door handle IDH is operated to open the door. The inhan lock linking portion 12b is a portion extending from the inside lever shaft 13 toward the rear of the vehicle.

  The lock mechanism 30 transmits the rotation operation of the open lever 11 by the opening operation of the outside door handle ODH to the latch mechanism 20 and the rotation operation of the open lever 11 by the opening operation of the outside door handle ODH. The worm wheel 31, the sector lever 32, and the link lever 33 are configured to be switched to a locked state that is not transmitted to the latch mechanism 20.

  The worm wheel 31 is disposed at a position located between the open lever 11 and the inside handle lever 12 so as to be rotatable via a wheel shaft 34 extending substantially horizontally along the left-right direction of the vehicle body B. Thus, it meshes with the worm 36 fixed to the output shaft 35 a of the electric motor (lock actuator) 35. An intermittent gear wheel 37 is fixed to the worm wheel 31 on the same axis. The intermittent gear wheel 37 constitutes intermittent power transmission means only in one direction with respect to the intermittent driven gear 32b of the sector lever 32 described later. Although not clearly shown in the drawing, a neutral return spring is provided between the worm wheel 31 and the main body case 10 to maintain the worm wheel 31 in a predetermined neutral state.

  The sector lever 32 is disposed at a position above the worm wheel 31 so as to be rotatable via a sector lever shaft 38 extending substantially horizontally along the left-right direction of the vehicle body B, and directed downward. Thus, it is formed in a sector shape that gradually expands. The sector lever 32 is provided with a connecting pin 32a and an intermittent driven gear 32b. The connecting pin 32 a is a columnar protrusion that extends substantially horizontally along the left-right direction of the vehicle main body B from the end surface of the sector lever 32 located on the indoor side. The intermittent driven gear 32 b is a gear formed on the outer peripheral surface forming the arc shape of the sector lever 32, and meshes with the intermittent gear wheel 37 of the worm wheel 31.

  Although not clearly shown in the figure, the intermittent power transmission means configured between the intermittent driven gear 32b of the sector lever 32 and the intermittent gear wheel 37 of the worm wheel 31 rotates the worm wheel 31 in an appropriate direction. While the sector lever 32 can be swung in any direction, there is no power transmission from the intermittent driven gear 32b to the intermittent gear wheel 37, and the sector lever 32 can be moved in any direction without rotating the worm wheel 31. It is configured so that it can be swung.

  The link lever 33 is a lever member having a mounting hole 33b at the lower end portion of the link body 33a. The operating end portion 11a and the pressure receiving portion 11b are inserted and held in the mounting hole 33b through the operating end portion 11a of the open lever 11. At the same time, it is supported so as to be able to move up and down and to swing around an axis along the left-right direction of the vehicle body B with respect to the operating end 11a. The link lever 33 is provided with a sector connecting portion 33c and a ratchet driving portion 33d. The sector connecting portion 33c is a portion extending upward from a portion on the vehicle front side in the link body 33a, and has a connecting groove 33e. The connecting groove 33e is a slit-like opening extending in the vertical direction, and the connecting pin 32a of the sector lever 32 is movably fitted and supported therein. The ratchet drive portion 33d is a contact engagement portion formed on the link main body 33a, and is disposed close to and opposed to the lower end surface of the contact portion 26a in the ratchet lever 26 when disposed vertically above the mounting hole 33b. Is provided.

  The link lever 33 is provided with a lock lever portion (lock lever) 33f. The lock lever portion 33f is a portion that extends downward from the mounting hole 33b when the link main body 33a is disposed vertically above the mounting hole 33b. The lock lever portion 33f is provided with an operation contact surface 33g at a portion located on the vehicle front side. The operation contact surface 33g is configured to extend substantially vertically when the link main body 33a is disposed vertically above the mounting hole 33b.

  In the lock mechanism 30 configured as described above, the state shown in FIG. 1 is an unlocked state, and the link main body 33a of the link lever 33 is disposed vertically above the mounting hole 33b. The lever 26 is in close proximity to the lower end surface of the abutting portion 26a. Accordingly, when the outside door handle ODH is opened from this state and the link main body 33a of the link lever 33 is moved upward by the rotation of the open lever 11, the ratchet driving portion 33d is brought into contact with the ratchet lever 26 in the latch mechanism 20. This abuts on the contact portion 26a and moves it upward. As a result, even when the latch mechanism 20 is in the latched state, this is released, so that the door D can be opened and moved with respect to the vehicle body B.

  When the worm wheel 31 is rotated counterclockwise by driving the electric motor 35 from the unlocked state shown in FIG. 1, the sector lever 32 swings clockwise about the sector lever shaft 38. As a result, in the lock mechanism 30, the link lever 33 engaged through the connecting pin 32a swings counterclockwise about the mounting hole 33b, and is brought into the locked state shown in FIG.

  In this locked state, the ratchet driving portion 33d deviates from the position facing the lower end surface of the abutting portion 26a of the ratchet lever 26, so that the outside door handle ODH is opened and the link lever is rotated by the rotation of the open lever 11. Even when the link body 33 a of 33 is moved upward, the ratchet driving portion 33 d does not contact the contact portion 26 a of the ratchet lever 26 in the latch mechanism 20. As a result, when the latch mechanism 20 is in the latched state, this is maintained, so that the door D is maintained at the closed position with respect to the vehicle body B.

  When the worm wheel 31 is rotated clockwise by driving the electric motor 35 from the locked state shown in FIG. 3, the sector lever 32 swings counterclockwise about the sector lever shaft 38. As a result, in the lock mechanism 30, the link lever 33 engaged through the connecting pin 32a swings clockwise around the mounting hole 33b, and returns to the unlocked state shown in FIG.

  Further, the door lock device is provided with a child lock mechanism 40 inside the body case 10 as shown in FIG. The child lock mechanism 40 is configured to switch between a transmission state in which the opening operation of the inside door handle IDH is transmitted to the locking mechanism 30 and a non-transmission state in which the opening operation of the inside door handle IDH is not transmitted to the locking mechanism 30. It has a connect lever 41 and a child lever (switching operation lever) 42.

  The connect lever 41 is disposed at a position between the inside handle lever 12 and the link lever 33 so as to be swingable via a connect lever shaft 43 extending substantially horizontally along the left-right direction of the vehicle body B. It has a transmission pin accommodating part 41a and a transmission end part 41b. The transmission pin accommodating portion 41a is a portion extending from the connect lever shaft 43 toward the front of the vehicle and has a pin accommodating hole 41c. The pin accommodation hole 41c is a slit-shaped opening formed along the extending direction of the transmission pin accommodation portion 41a. As is clear from FIG. 1, the pin accommodation hole 41 c formed in the transmission pin accommodation portion 41 a is oscillated when the above-mentioned inside lock linking portion 12 b of the inside handle lever 12 oscillates around the inside lever shaft 13. An end portion located on the vehicle front side with respect to the region is included in this, while an end portion located on the vehicle rear side deviates from the swing region. The transmission end portion 41 b is a portion that extends obliquely downward from the connect lever shaft 43 toward the rear of the vehicle, and the extending end portion is disposed in a region below the pressure receiving portion 11 b in the open lever 11. Yes.

  The child lever 42 is slidably disposed along the front-rear direction of the vehicle main body B between the connect lever 41 and the main body case 10 so as to overlap the connect lever 41. The child lever 42 includes a slide groove 42a, a transmission pin support groove 42b, a notch engaging portion 42c, a manual operation portion 42d, and a lock operation portion 42e.

  The slide groove 42 a is a slit-like opening through which the connect lever shaft 43 of the connect lever 41 described above is inserted, and extends along the front-rear direction of the vehicle body B. The length of the slide groove 42a determines the sliding amount of the child lever 42, and is set so as to embody the action described later.

  The transmission pin support groove 42b is a slit-like opening, and supports the transmission pin 44 so as to be slidable. The transmission pin 44 is a columnar member that protrudes from the child lever 42 toward the outdoor side. As shown in FIG. 6, the transmission pin 44 penetrates the pin accommodating hole 41 c of the connect lever 41, and then the protruding end portion reaches a position exceeding the outdoor side end surface of the inside handle lever 12. As shown in FIGS. 1 and 3, the transmission pin 44 is positioned on the vehicle rear side from the end portion of the pin accommodation hole 41 c formed in the connect lever 41 on the vehicle front side by sliding the child lever 42. It is possible to move between the end portions.

  The notch engaging portions 42 c are concave grooves that engage with the notches 14 provided on the inner surface of the main body case 10, and are provided at three locations on the upper edge of the child lever 42. As shown in FIGS. 1 and 7, the notch engaging portion 42 c located at the rear of the vehicle defines the front end position of the child lever 42 with respect to the main body case 10 when the notch 14 is engaged. Similarly, as shown in FIGS. 3 and 7, the notch engaging portion 42c located in front of the vehicle defines the rear end position of the child lever 42 with respect to the main body case 10 when the notch 14 is engaged. The notch engaging portion 42c located at the center defines the intermediate position of the child lever 42 with respect to the main body case 10 when the notch 14 is engaged, as shown in FIGS. When the child lever 42 is disposed at the front end position, the transmission pin 44 is disposed in the swinging area of the inside lock interlocking portion 12b in the inside handle lever 12 as shown in FIG. On the other hand, when the child lever 42 is disposed at the intermediate position and the rear end position, as shown in FIGS. 2 and 3, the transmission pin 44 is disposed outside the swinging area of the in-han lock linking portion 12b. Will be.

  As shown in FIG. 6, the manual operation portion 42 d is a portion that bends and extends from the end portion of the child lever 42 located on the vehicle rear side toward the indoor side. This manual operation part 42d protrudes outside through the operation hole 10a provided in the main body case 10 and the operation opening DPO provided in the panel DP of the door D, and the child lever 42 can be slid from the outside of the door D. It is. However, in the present embodiment, as shown in FIG. 4, the manual operation portion 42 d is provided on the inner surface of the door D and at a position where the door D is closed when the door D is disposed at the closed position. Yes. As shown in FIG. 7, the display corresponding to each operation position is provided in the operation opening DPO of the panel DP where the manual operation unit 42d is exposed to the outside.

  As shown in FIG. 6, the lock operation portion 42 e extends and bends toward the outdoor side from the end portion of the child lever 42 located on the vehicle rear side, and the operation contact of the lock lever portion 33 f in the lock mechanism 30 described above. It is a part facing the surface 33g. 1 and 2, when the child lever 42 is disposed at the front end position and the intermediate position, the lock operation portion 42e is operated by the lock lever portion 33f that extends vertically downward from the mounting hole 33b. When the child lever 42 is disposed at the rear end position as shown in FIG. 3 while being separated from the surface 33g, the link lever 33 is rotated counterclockwise via the operation contact surface 33g. It is provided at a position where it can be rotated and the lock mechanism 30 can be switched to the locked state.

  In the child lock mechanism 40, the state shown in FIG. 1 is the transmission state, and the transmission pin 44 of the child lever 42 is arranged in the swing range of the inside lock link portion 12 b in the inside handle lever 12. When the inside door handle IDH is operated to open from this state, the Inhan lock linkage 12b moves the transmission pin 44 downward. When the transmission pin 44 moves downward along the transmission pin support groove 42b, the connect lever 41 through which the transmission pin 44 is inserted swings counterclockwise in FIG. 1, and its transmission end 41b moves upward. For this reason, the link lever 33 also moves up via the pressure receiving portion 11b of the open lever 11. Therefore, when the lock mechanism 30 is in the unlocked state, the link lever 33 comes into contact with the contact portion 26a of the ratchet lever 26 in the latch mechanism 20, and the latched state can be released. That is, the door D can be opened and moved by the opening operation of the inside door handle IDH.

  On the other hand, when the child lever 42 is slid to the vehicle rear side and switched to the state shown in FIG. 2 or the state shown in FIG. 3, the child lock mechanism 40 enters a non-transmitting state. In this non-transmission state, the transmission pin 44 of the child lever 42 is disposed outside the swinging range of the inhan lock linking portion 12b in the inside handle lever 12, so that even if the inside door handle IDH is operated to open, the inhan lock linking portion 12b. And the transmission pin 44 do not contact each other, and the connect lever 41 does not swing. As a result, regardless of the locked / unlocked state of the lock mechanism 30, the door D cannot be opened and moved by the opening operation of the inside door handle IDH.

  In the door lock device including the lock mechanism 30 and the child lock mechanism 40 as described above, the lock mechanism 30 can be easily switched between the locked state and the unlocked state by driving the electric motor 35 during normal use. it can.

  On the other hand, when the electric motor 35 is not driven due to a failure in the electric motor 35 or a charging voltage of a battery (not shown) is reduced, the child D is opened from the opened state via the manual operation unit 42d. The lever 42 may be slid to the rear side of the vehicle and disposed at the “emergency ON” position shown in FIG. That is, when the child lever 42 is disposed at the “emergency ON” position, the link lever 33 swings via the lock operation portion 42e of the child lever 42, and the lock mechanism 30 is switched to the locked state shown in FIG. It will be. Therefore, even if the above-mentioned state occurs when the indoor lock operation member is omitted, the vehicle can be secured.

  In this case, the child lever 42 is provided at a position that is closed when the door D is closed. Therefore, even if a malicious object breaks the window glass, it is difficult to operate the child lever 42. Moreover, when the child lever 42 is disposed at the “emergency ON” position, the child lock mechanism 40 is in a non-transmitting state. Accordingly, even when the lock mechanism 30 is switched from the locked state to the unlocked state by operating the inside door handle IDH in order to improve the operability, the lock mechanism 30 is locked by operating the child lever 42. If it is in the state, the lock mechanism 30 is not switched to the unlocked state by the opening operation of the inside door handle IDH. As a result, even in a door lock device that has improved operability by applying a so-called one-motion mechanism or double-action mechanism, the anti-theft property of the vehicle can be remarkably improved.

  When the electric motor 35 can be driven again by exchanging the battery, the child lever 42 is intermediated via the operation contact surface 33g of the lock lever portion 33f if the lock mechanism 30 is switched to the unlocked state. It can be returned to the position.

  In the above-described embodiment, since the notch and the notch engaging portion are provided between the child lever and the main body case, a sense of moderation can be given when the child lever is operated, and erroneous operation is prevented. However, the present invention does not necessarily require a notch and a notch engaging portion between the child lever and the main body case. Further, even when the notch and the notch engaging portion are provided, it is not always necessary to provide them individually.

  8 to 11 show modifications of the door lock device described above. The door lock device according to this modified example has the same configuration as that of the above-described embodiment. The child lever includes two notch engaging portions, and the child lever includes a spring operation portion. Only the point is different. In the modification, the same components as those in the embodiment are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

  As shown in FIG. 8, the notch engaging portion 142 c located at the rear of the vehicle defines the front end position of the child lever (switching operation lever) 142 with respect to the main body case 10 when the notch 14 is engaged. A notch engaging portion (hereinafter referred to as “notch engaging groove 142c ′”) that is continuous from the front of the vehicle to an intermediate portion is formed in the main body case 10 when the notch 14 is engaged, as shown in FIGS. The intermediate position and the rear end position of the child lever 142 with respect to are defined. When the child lever 142 is disposed at the front end position, the transmission pin 44 is disposed in the swinging area of the inside lock link portion 12b in the inside handle lever 12 as shown in FIG. On the other hand, when the child lever 142 is arranged at the intermediate position and the rear end position, as shown in FIGS. 9 to 11, the transmission pin 44 is arranged outside the swinging range of the inhan lock linking part 12b. Will be.

  The spring operation portion 142f is for pressing the return spring 18 provided in the main body case 10, and extends from the lower surface of the end portion of the child lever 142 located in front of the vehicle toward the rear of the vehicle. As shown in FIG. 9, when the notch 14 is engaged with the vehicle rear side end portion of the notch engaging groove 142c ′, the spring operating portion 142f does not act on the return spring 18 at all. In this state, as shown in FIG. 10, when the notch 14 is engaged with the vehicle front side end portion of the notch engagement groove 142c ′ by sliding the child lever 142 to the vehicle rear side, the spring operation portion 142f is It functions to compress the return spring 18. That is, the spring operation portion 142f compresses the return spring 18 when the link lever 33 of the lock mechanism 30 is rotated counterclockwise via the lock operation portion 142e of the child lever 142.

  In the door lock device according to the modified example configured as described above, when the operation force of the child lever 142 is removed from the state shown in FIG. 10, the child lever 142 moves to the vehicle front side by the elastic restoring force of the return spring 18. As shown in FIG. 11, the notch 14 is located at a position where the notch engaging groove 142 c ′ is engaged with the vehicle rear side end. Even in this state, the lock mechanism 30 once locked is maintained in the locked state, and the vehicle can be secured against theft. Further, in the child lock mechanism 140, the non-transmission state is maintained.

  Therefore, even in the door lock device of this modification, as in the embodiment, even if the above-described state occurs when the indoor lock operation member is omitted, it is possible to ensure the anti-theft property of the vehicle.

  In this modified example, the child lever 142 is provided at a position that is closed when the door D is closed, as in the embodiment. Therefore, even if a malicious object breaks the window glass, it is difficult to operate the child lever 142. In addition, since the child lock mechanism 140 is in the non-transmitting state, it is applied to a configuration in which the lock mechanism 30 is switched from the locked state to the unlocked state by operating the inside door handle IDH in order to improve operability. Even in this case, the lock mechanism 30 is not switched to the unlocked state by the opening operation of the inside door handle IDH. As a result, even in a door lock device that has improved operability by applying a so-called one-motion mechanism or double-action mechanism, the anti-theft property of the vehicle can be remarkably improved.

It is the conceptual diagram which showed the door lock apparatus which is embodiment of this invention. It is a conceptual diagram at the time of making a child lock mechanism into a non-transmission state in the door lock device shown in FIG. FIG. 2 is a conceptual diagram when a switching operation lever is moved to an emergency lock position in the door lock device shown in FIG. 1. It is a principal part cross-sectional top view of the vehicle to which the door lock apparatus shown in FIG. 1 is applied. It is a conceptual diagram of the latch mechanism applied to the door lock apparatus shown in FIG. It is the VI-VI sectional view taken on the line in FIG. It is a conceptual diagram which shows the operation display of the switching operation lever in the door lock apparatus shown in FIG. It is a conceptual diagram which shows the modification of the door lock apparatus shown in FIG. It is a conceptual diagram at the time of making a child lock mechanism into a non-transmission state in the door lock device shown in FIG. It is a conceptual diagram at the time of moving the switching operation lever to the emergency lock position in the door lock device shown in FIG. It is a conceptual diagram which shows the state which removed the operating force of the switching operation lever from the state shown in FIG.

Explanation of symbols

26 ratchet lever 26a contact part 30 lock mechanism 31 worm wheel 32 sector lever 32a connecting pin 32b intermittent driven gear 33 link lever 33a link body 33b mounting hole 33c sector connecting part 33d ratchet driving part 33e connecting groove hole 33f lock lever part 33g Operation contact surface 34 Wheel shaft 35 Electric motor 35a Output shaft 36 Worm 37 Intermittent gear wheel 38 Sector lever shaft 40 Child lock mechanism 41 Connect lever 41a Transmission pin accommodation portion 41b Transmission end portion 41c Pin accommodation hole 42 Child lever 42a Slide groove 42b Transmission pin support groove 42c Notch engagement portion 42d Manual operation portion 42e Lock operation portion 43 Connect lever shaft 44 Transmission pin 140 Child lock mechanism 142 Child drain Over 142c notch engaging portion 142c 'notch engaging groove 142e locking portion 142f spring operating unit B vehicle body D door DP panel DPO operational opening IDH inside door handle ODH outside door handle S striker

Claims (2)

When the door is placed in the closed position with respect to the vehicle body, it is interposed between the latch mechanism that is in a latched state and restricts the movement of the door in the opening direction, and from the door handle to the latch mechanism. When the door handle is opened in the locked state, this is transmitted to the latch mechanism to release the latched state and allow the door to move in the opening direction. In a door lock device comprising a lock mechanism that maintains the latched state of the latch mechanism even when the door is operated to open, and a lock actuator that switches the lock mechanism between a locked state and an unlocked state,
It is interposed between the inside door handle disposed in the room and the locking mechanism, and the transmission state for transmitting the opening operation of the inside door handle to the locking mechanism and the opening operation of the inside door handle are transmitted to the locking mechanism. A child lock mechanism that can be switched to a non-transmission state,
A switching operation lever that is operable in a state in which the door is opened and is disposed in a position where the operation is impossible when the door is disposed in a closed position, and the child lock mechanism is switched between a transmission state and a non-transmission state when operated. ,
The lock mechanism is disposed on an operation range of the switching operation lever, and the locking mechanism is further moved to a predetermined emergency lock position after the child lock mechanism is switched from the transmission state to the non-transmission state. And a lock lever that switches the
The switching operation lever is separated from the lock lever when the child lock mechanism is switched from the transmission state to the non-transmission state, and is in contact with the lock lever when arranged at the emergency lock position. A door lock device that switches the lock mechanism to a locked state .   2. The door lock device according to claim 1, wherein the lock mechanism, the lock actuator, and the child lock mechanism are disposed on a surface facing the left-right direction of the vehicle main body inside the main body case.

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