JP2011179217A - Door lock system of door for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a surely locked state by reducing an actuated portion, associated with an opening operation, to the utmost and preventing an unreasonable force from acting on each portion, even when the opening operation of an inside handle is performed in the case where a lock knob is in a locking position. <P>SOLUTION: A single push-pull cable 5 for connecting an inside operation device 1 and a door latch device 100 together transmits an unlocking operation of the lock knob 4 to an inside lever 126 so as to shift the inside lever 126 to an unlocking position, and transmits a locking operation of the lock knob 4 to the inside lever 126 so as to shift the inside lever 126 to a locking position. When the lock knob 4 is in the unlocking position, the opening operation of the inside handle 3 is transmitted to the inside lever 126 as the lock knob 4 is kept in the unlocking position, so as to shift the inside lever 126 in an opening direction from the unlocking position. When the lock knob 4 is in the locking position, the opening operation of the inside handle 3 is not transmitted to the inside lever 126 as the lock knob 4 is kept in the locking position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a door lock system for an automobile door provided with a door latch device and an inside operation device for operating the door latch device.

  In the door lock system as described above, the door latch device for holding the door in the closed state, the inside handle operated when opening the door, and the door latch device operated when the door latch device is set to the locked state and the unlocked state. The inside handle and the lock knob are respectively coupled to the door latch device via two operating force transmission members formed of a rod or a push / pull cable (for example, see Patent Document 1).

  Further, in the other door lock system, similarly to the one described in Patent Document 1, the door latch device, the inside handle, and the lock knob are provided, and the inside handle and the lock knob are connected to the door latch device through one operating force transmission member. (See, for example, Patent Document 2).

JP-A-6-264653 JP-A-9-96131

  However, in the door lock system described in Patent Document 1, even if the lock knob is in the locked position and the door latch device is in the locked state, if the inside handle is operated in the opening direction, the opening operation is It is transmitted to the inside lever of the door latch device via the transmission member. For this reason, since the inside lever operates, abnormal noise such as rattling and operating noise is likely to occur due to many unnecessary movements. In addition, since two operating force transmission members for connecting the inside handle and the lock knob to the door latch device are required, there are many components and the cost increases.

  Further, in the door lock system described in Patent Document 2, the inside handle and the lock knob are connected to the door latch device with a single operation force transmission member, so that the number of components can be reduced and the cost can be reduced. However, when the lock knob is in the locked position, the operation of the inside handle in the opening direction is prevented, so the locked door latch device does not operate at all, but if the inside handle is forcibly opened, There is a possibility that an unreasonable force acts on each part that prevents the operation of the handle and the parts are deformed.

  In view of the above-described problems, the present invention reduces the number of operating parts associated with the opening operation of the inside handle as much as possible when the lock knob is in the locked position, and prevents a force from acting on each part to ensure a locked state. It is an object of the present invention to provide a door latch system for an automobile door that can be obtained.

  In order to solve the above-described problems, the technical means in the present invention includes an inside handle disposed inside the door and operable in the open direction from the non-operation position, and a lock position and an unlocking disposed inside the door. An inside operation device including a lock knob operable in a lock position; meshing means disposed on the door and engaged with a striker on the vehicle body side to restrain the door in a closed position; and Lock / unlock means that can be switched between an unlocked state and a lock state that cannot be released based on an operation of an outside handle provided, and the lock / unlock means Can be moved to the unlocked position, which is also in the unlocked state, and the meshing can be performed from the unlocked position. A door latch device including an inside lever movable in an open direction capable of releasing the engagement between the step and the striker, and the operation of the lock knob to the unlock position is transmitted to the inside lever to unlock the inside lever. The lock knob is moved to the position, and the operation of the lock knob to the lock position is transmitted to the inside lever to move the inside lever to the lock position. When the lock knob is in the unlock position, the lock knob remains in the unlock position. The operation of the inside handle in the opening direction is transmitted to the inside lever to move the inside lever from the unlock position to the opening direction, and when the lock knob is in the lock position, the lock knob remains in the lock position, Of the inside handle The operation to Pun direction so as not to transmit to said inside lever comprises said lock knob and the inside handle, and a single operating force transmitting means cooperating with said inside lever.

  More preferably, when the lock knob is in the unlocked position, the operating force transmission means is within the movement trajectory of the open arm portion that operates in accordance with the operation of the inside handle in the opening direction, and the inside handle When the lock knob is in the locked position, it moves out of the movement track of the open arm when the inside lever is moved in the open direction by contacting the open arm with the opening operation. Therefore, it does not move with the inside handle opening operation.

  More preferably, the operating force transmission means is a single push-pull cable capable of transmitting a push-pull operation.

  According to the present invention, when the lock knob is in the locked position, the opening operation of the inside handle is not transmitted to the operating force transmission means, so that unnecessary movement is reduced and excessive force is not applied to each part reliably. Can be obtained in a locked state.

It is the front view seen from the vehicle inside of the door for motor vehicles to which the present invention is applied. It is a front view of the inside operation device concerning the present invention. It is a back view of an inside operating device similarly. It is an exploded perspective view of an inside operation device similarly. It is the reverse view seen from the vehicle outside of the door latch apparatus similarly. It is operation | movement explanatory drawing of the principal part which shows a locked state. It is operation | movement explanatory drawing of the principal part which shows an unlocked state. It is action | operation explanatory drawing of the principal part which shows the state by which the inside handle was opened by the locked state. It is action | operation explanatory drawing of the principal part which shows the state by which the inside handle was opened by the unlocking state.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, an inside operation device 1 according to the present invention is disposed inside a front door (hereinafter referred to as a door) D of an automobile, and a door latch device 100 is disposed at an inner rear end of the door D. Established. Further, the inside operating device 1 and the door latch device 100 are connected via a single push / pull cable 5 that constitutes an operating force transmitting means that faces the front-rear direction in which operations can be transmitted to each other. An outside handle OH that is operated when the door D is opened from the outside of the vehicle and a key cylinder (not shown) that is operated when the door latch device 100 is locked and unlocked are provided outside the vehicle.

  As shown in FIGS. 2 to 4, the inside operation device 1 is operated when the door D is pivotally supported by the case 2 and the door D is opened from the inside of the vehicle. An inside handle 3 and a lock knob 4 that is pivotally supported by the case 2 and is operated when the door latch device 100 is switched between an unlocked state and a locked state.

  The case 2 has a box shape with a surface facing the inside of the vehicle, and the upper and lower wall portions 20, 20 have an arc-shaped first guide path 21 centered on the rotation center of the lock knob 4, An arcuate second guide path 22 that is continuous with the front end portion of the one guide path 21 and that is centered on the rotation center of the inside handle 3 is provided. Further, a vehicle used when assembling the cylindrical connecting portion 6 fixed to the front end of the push-pull cable 5 to the case 2 at the rear end of the first guide path 21 provided on the lower wall portion 20. An assembly opening 23 having an outer opening is continuously provided.

  The connecting portion 6 of the push-pull cable 5 is slidably engaged with the first guide path 21 and the second guide path 22 of the case 2 in the front-rear direction (moving direction of the push-pull cable 5). As shown in FIG. 7, the first guide path 21 is located at a substantially central position and in front of the assembly opening 23. As shown in FIG. 7, the first guide path 21 is in front of the first position. As shown in FIG. 9, the second position located at the connection portion between the second guide path 22 and the second guide path 22 is moved in the open direction (forward) from the second position, and the second position near the front end of the second guide path 22 It can be moved to 3 positions.

  The push / pull cable 5 is moved integrally with the connecting portion 6 to move in the front-rear direction, thereby transmitting each operation of the lock knob 4 and the inside handle 3 to the door latch device 100 and the operation of the door latch device 100 to the lock knob 4. To do.

  The lock knob 4 is pivotally supported in the case 2 by a shaft 8 that faces in the vertical direction, and is movable to a lock position shown in FIG. 6 and an unlock position shown in FIG. 7 rotated by a predetermined angle clockwise from the lock position. . The lock knob 4 includes an operation portion 41 exposed to the inside of the vehicle, a pair of upper and lower unlock arm portions 42 extending in a direction intersecting the first guide path 21 of the case 2, a lock arm portion 43, and a lock arm portion 43. A blocked arm portion 44 that extends longer than that of the blocked arm portion 44 and a projecting portion 45 that protrudes inward and is provided at the rotating end of the blocked arm portion 44 are integrally formed.

  The lock arm portion 43 is provided on the clockwise side with respect to the unlock arm portion 42, that is, on the unlock operation direction side of the lock knob 4. As a result, an engagement groove 46 is formed between the unlock arm portion 42 and the lock arm portion 43 so that the connecting portion 6 can be engaged in the front-rear direction.

  The connecting portion 6 of the push-pull cable 5 is engaged with the engaging groove 46 of the lock knob 4 to synchronize with the operation of the lock knob 4 and the operation of the inside lever 126 described later of the door latch device 100, as shown in FIG. In addition, when the lock knob 4 moves to the lock position, it moves to the first position, and as shown in FIG. 7, when the lock knob 4 moves to the unlock position, it moves to the second position. Thereby, in the usage form of the inside operation device 1, when the connecting portion 6 moves based on the lock / unlock operation of the lock knob 4, the connecting portion 6 does not move in the region where the assembly opening 23 is provided. The first guide path 21 can be smoothly slid without being caught.

  The inside handle 3 is pivotally supported in the case 2 by a shaft 7 facing in the vertical direction. When the inside handle 3 is opened, the inside handle 3 resists the biasing force of a return spring (not shown) wound around the shaft 7 in FIGS. It rotates from the non-operation position shown to an open direction (clockwise direction), and rotates to the open position shown in FIG. In the non-operating state, the inside handle 3 is urged to the non-operating position by the urging force of the return spring and stopped.

  The inside handle 3 includes an arm-shaped handle 31 that is gripped during an opening operation, a pair of upper and lower open arms 32 and a push-out arm 33 that extend in a direction intersecting the second guide path 22 of the case 2. Are integrally formed. In the vicinity of the base of the open arm portion 32, a blocking portion 34 having an arcuate inner peripheral surface 341 and an outer peripheral surface 342 centering on the rotation center (the shaft 7) of the inside handle 3 is integrally provided.

  The push-out arm portion 33 is provided on the clockwise side of the open arm portion 32, that is, on the open direction side of the inside handle 3. Thereby, between the open arm part 32 and the extrusion arm part 33, the engaging groove 35 which can engage the connection part 6 in the front-back direction is provided.

  As shown in FIG. 6, when the lock knob 4 is in the locked position and the connecting portion 6 is in the first position, the connecting portion 6 is located outside the moving path of the open arm portion 32 of the inside handle 3. Therefore, in this locked state, even if the inside handle 3 rotates in the opening direction from the non-operation position, as shown in FIG. 8, the open arm portion 32 swings with respect to the connecting portion 6, and the connecting portion 6 It does not move from one position. That is, the opening operation of the inside handle 3 is not transmitted to the push-pull cable 5 by swinging.

  Further, as shown in FIG. 7, when the lock knob 4 is in the unlock position and the connecting portion 6 is in the second position, the connecting portion 6 moves the open arm portion 32 and the pushing arm portion 33 of the inside handle 3. You are entering the trajectory. Therefore, in this unlocked state, when the inside handle 3 rotates from the non-operation position to the open operation, the open arm portion 32 abuts on the rear surface of the connection portion 6, so that the connection portion 6 moves forward and the inside handle is moved. 3 engaging grooves 35. As a result, as shown in FIG. 9, the connecting portion 6 comes out of the engaging groove 46 of the lock knob 4 and moves in the open direction to move to the third position, so that the push-pull cable 5 is pulled forward. As a result, the opening operation of the inside handle 3 is transmitted to the door latch device 100. When the inside handle 3 is returned to the non-operation position, the push arm 33 of the inside handle 3 pushes the connecting portion 6 from the front side, and the connecting portion 6 returns to the second position again in synchronization with the movement of the inside handle 3.

  When the inside handle 3 is in the non-operation position as shown in FIGS. 6 and 7, the blocking portion 34 is located outside the movement path of the protrusion 45 associated with the locking and unlocking operation of the lock knob 4. As shown in FIG. 9, when the inside handle 3 is opened and rotated in the opening direction, it enters the movement path of the protrusion 45.

  When the lock knob 4 is in the locked position and the inside handle 3 is rotated in the open direction as shown in FIG. 9, the protrusion 45 is located on the inner peripheral side of the blocking portion 34, and FIG. When the lock knob 4 is in the unlocked position and the inside handle 3 is rotated in the open direction as shown in FIG.

  Next, the door latch device 100 will be described with reference to FIGS. 6 to 9 show the AA line cross-sectional view in FIG. 2 for the inside operation device 1 and the main part viewed from the back side of the door latch device 100 for convenience of explanation.

  The door latch device 100 includes a meshing portion 110 that restrains the door D in a closed state by meshing with a striker (not shown) on the vehicle body side, and an operation portion 120 that relays the operation of the inside operation device 1.

  The meshing part 110 is associated with a body 111 fixed in the door D by a plurality of bolts (not shown), and a striker (not shown) pivotally attached to the body 111 by a shaft facing in the front-rear direction. A well-known latch (not shown) that can be detached, a well-known ratchet (not shown) that is pivotally mounted in the body 111 by a shaft that faces in the front-rear direction, and a ratchet integrated with the ratchet on the front side of the body 111 When the door D is closed, the striker on the vehicle body side enters the body 111 and engages with the latch, and the ratchet opens in the opening direction with respect to the latch. By engaging in a direction that prevents the rotation of the door D, the door D is restrained in the closed state. In addition, since the internal structure of the meshing part 110 is a well-known technique, illustration is abbreviate | omitted.

  As shown mainly in FIG. 5, the operation unit 120 includes a housing 121 that is fixed so as to cover the front side of the body 111, and a portable remote operation switch or a switch ( A motor 122 that can be rotated forward and backward by an operation switch (not shown), a lock lever 124 having a gear portion 124a meshing with a worm 123 fixed to the rotation shaft of the motor 122, and a lift lever connected to the lock lever 124 125, an inside lever 126 to which the rear end portion of the push / pull cable 5 is connected, and an outside lever 127 to be connected to the outside handle OH via an operating force transmission member (not shown) such as a rod. . In FIG. 5, the housing 121 is indicated by a two-dot chain line in order to clearly show the components of the operation unit 120.

  The lock lever 124 is pivotally supported in the housing 121 by a support shaft 128 facing inward and outward of the vehicle, and the gear portion 124a meshes with the worm 123 so that the lock lever 124 is unlocked by the operation of the key cylinder and the lock knob 4 and the rotation of the motor 122. It can be rotated between a lock position (see FIGS. 5 and 7) and a lock position (see FIGS. 6 and 8) that is rotated counterclockwise by a predetermined angle from the unlock position. Note that the worm 123 meshes reversibly with the gear portion 124a of the lock lever 124 so that the worm 123 can be reversed by an operation from the lock lever 124 side.

  The lock lever 124 is provided with an arc-shaped long hole 124b centered on the support shaft 128. A cylindrical stopper portion 121a provided in the housing 121 is loosely fitted in the long hole 124b so as to be relatively slidable in the circumferential direction. Thereby, the rotation range of the lock lever 124 is limited so that the lock lever 124 can reciprocate between the lock position and the unlock position.

  Further, a connecting shaft portion 124c that protrudes toward the inside of the vehicle is provided at the tip portion of the arm portion facing upward in the lock lever 124, and the front end portion of the arm portion facing obliquely downward is substantially square-shaped when viewed from the front. A connecting groove 1241 is provided.

  An elastic member for elastically holding the lock lever 124 at the lock position and the unlock position is formed by a torsion spring 129. The torsion spring 129 has a coil portion wound around the stopper portion 121a, and both arm portions sandwiching a protrusion 124d provided on the lock lever 124 from both sides so that the lock lever 124 rotates to the lock position. A biasing force in the lock direction (counterclockwise in FIG. 6) is applied to the lock lever 124, and when the lock lever 124 is rotated to the unlock position, the lock lever 124 is unlocked (FIG. 5). The urging direction is changed so as to apply the urging force in the clockwise direction.

  The outside lever 127 is pivotally supported on the housing 121 by a support shaft (not shown) that faces in the front-rear direction, and an outer handle OH is provided on an outer end of the vehicle via an up / down operation force transmission member (not shown). Connected. As a result, when the outside handle OH is opened, the outside lever 127 rotates in the opening direction so that the vehicle inner side end 127a moves upward.

  The lower end of the lift lever 125 is coupled to the vehicle interior end 127 a of the outside lever 127 so as to be swingable in the front-rear direction. Slidably engaged with each other to move to the locked position (see FIG. 6) and unlocked position (see FIG. 5) in conjunction with the operation of the lock lever 124 to the locked position and unlocked position. Further, the outside lever 127 is moved in the opening direction (upward) following the rotation of the outside lever 127 in the opening direction.

  The lift lever 125 is provided with an open contact portion 125b that can contact an open contacted portion 112a provided at a rotating end portion of the open lever 112 from below.

  When the lift lever 125 is in the unlocked position as shown in FIG. 7, the open contact portion 125 b faces the open contacted portion 112 a of the open lever 112 in a state where it can contact, and the outside lever 17 is opened. The open contact portion 125b contacts the open contacted portion 112a from below by operating in the open direction in conjunction with the rotation in the direction to open the door D by rotating the open lever 112 in the open direction. In addition, when in the locked position as shown in FIG. 6, the open contact portion 125b is displaced to a position not facing the open contacted portion 112a and is driven by the rotation of the outside lever 127 to open the opening direction. The door D cannot be opened by swinging with respect to the open contacted portion 112a even if the door D is operated.

  The lock / unlock means according to the present invention is constituted by a lock lever 124 and a lift lever 125 in a non-limiting embodiment. However, the present invention is not limited to the embodiments, and various modifications can be made. In other words, the lock / unlock means may have any configuration as long as it can be switched between an unlocked state in which the door D can be opened and a locked state in which the door D cannot be opened based on the opening operation of the outside handle OH. There may be.

  The inside lever 126 is pivotally supported on the housing 121 by a support shaft 130 facing inward and outward of the vehicle, and the rear end portion of the push-pull cable 5 is coupled to the coupling portion 126a at the lower end portion. As a result, the inside lever 126 is synchronized with the movement of the push-pull cable 5 when the connecting portion 6 is in the first position and from the locked position shown in FIG. 6, and when the connecting portion 6 is in the unlocked position. The lock position shown in FIG. 7 rotated by a predetermined angle in the clockwise direction, and when the connecting portion 6 moves from the second position in the open direction, as shown in FIG. ) To a predetermined angle.

  An engaging portion 126 b that slidably engages with the coupling groove 1241 of the lock lever 124 is provided on the rotating surface of the inside lever 126. By engaging the engaging portion 126b and the connecting groove 1241 with each other, the movement of the lock lever 124 from the lock position to the unlock position and vice versa can be transmitted to the inside lever 126. The movement from the lock position to the unlock position and vice versa can be transmitted to the lock lever 124, and the rotation of the inside lever 126 from the unlock position to the open direction is not transmitted to the lock lever 124. The lock lever 124 and the inside lever 126 are connected to each other.

  The positional relationship between the engaging portion 126b of the inside lever 126 and the connecting groove 1241 of the lock lever 124 will be described. As shown in FIG. 6, the lock knob 4, the lock lever 124, and the inside lever 126 are all in the locked position. In some cases, the engaging portion 126b of the inside lever 126 is located at the lower end of the connecting groove 1241, and as shown in FIG. 7, the lock knob 4, the lock lever 124, and the inside lever 126 are all in the unlocked position. Sometimes, the engaging portion 126b is located at the curved portion 1241a of the connecting groove 1241, and as shown in FIG. 9, when the inside lever 126 is rotated from the unlocked position in the open direction, the lock lever 124 is unlocked. From above the curved portion 1241a of the connecting groove 1241 while being stopped at the position Moving.

  When the inside lever 126 is in the locked position, as shown in FIG. 6, the engaging portion 126 b of the inside lever 126 is in a state that can be engaged in the front and rear of the lower portion of the coupling groove 1241 in the lock lever 124. The inside lever 126 is elastically held at the lock position by the urging force of the torsion spring 129 via the lock lever 124. Further, since the connecting portion 6 is engaged with the engaging groove 46 of the lock knob 4, the lock knob 4 is also elastically held at the lock position via the push / pull cable 5.

When the lock knob 4 is in the unlock position, the connecting portion 6 of the push-pull cable 5 abuts on the rear end of the pushing arm portion 33 of the inside handle 3, and the engaging portion 126b of the inside lever 126 is The lock lever 124 is pressed against the bent portion 1241 a of the connecting groove 1241.
Accordingly, in the direction from the unlock position to the lock position, the inside lever 126 moves from the unlock position to the lock position by the connection portion 126b coming into contact with the bent portion 1241a of the connection groove 1241. The movement from the unlock position to the open direction is suppressed by the urging force of the return spring that urges the inside handle 3 to the non-operation position via the push-pull cable 5. It can be suppressed.

  Furthermore, an open action portion 126c that can contact the rotating end portion 127b of the outside lever 127 from below is provided above the engaging portion 126b of the inside lever 126. When the inside lever 126 moves in the range between the locked position and the unlocked position, the open action portion 126c does not contact the rotating end portion 127b of the outside lever 127, but the inside lever 126 When rotating in the open direction from the unlock position, the outside lever 127 can be rotated in the open direction by coming into contact with the rotating end portion 127b of the outside lever 127.

Next, the operation of the door lock system according to this embodiment will be described.
The locked state used in the following description is a state in which the lock knob 4, the lock lever 124, the lift lever 125, and the inside lever 126 are in the locked position, and the unlocked state is the lock knob 4, the lock lever 124, the lift lever. The lever 125 and the inside lever 126 are in the unlocked position.

(When the inside handle 3 is opened in the locked state)
As shown in FIG. 6, in the locked state, the connecting portion 6 of the push-pull cable 5 engages with the engaging groove 46 of the lock knob 4, and the second portion outside the moving path of the open arm portion 32 in the inside handle 3. Located at 1 position.

  In this locked state, even if the inside handle 3 is opened and rotated from the non-operating position in the opening direction, the open arm portion 32 of the inside handle 3 is in contact with the connecting portion 6 as shown in FIG. Move freely without touching. Therefore, the opening operation of the inside handle 3 is not transmitted to the push / pull cable 5, and the inside lever 126 of the door latch device 100 does not move from the locked position, so the door D cannot be opened.

  Therefore, in the locked state, even if the inside handle 3 is opened, excessive force does not act on other components, so that deformation of each part can be prevented, and the push / pull cable 5 and the inside lever can be prevented. Since the opening operation of the inside handle 3 is not transmitted to 126, there are few unnecessary operations and a reliable locked state can be obtained.

  Further, as shown in FIG. 8, while the inside handle 3 is rotating in the opening direction, the blocking portion 34 of the inside handle 3 enters the movement path of the protrusion 45 of the lock knob 4, and the protrusion The portion 45 can come into contact with the outer peripheral surface 342 of the blocking portion 34, and the movement of the lock knob 4 from the locked position to the unlocked position is blocked. Accordingly, it is possible to reliably prevent an erroneous operation that erroneously moves the lock knob 4 from the locked position to the unlocked position during the opening operation of the inside handle 3.

(When the outside handle OH is opened in the locked state)
When the outside handle OH is opened in the locked state shown in FIG. 6, the opening operation is transmitted to the lift lever 125 via the outside lever 127, and the lift lever 125 moves in the opening direction. However, in this state, the open contact portion 125b of the lift lever 125 cannot be swung with respect to the open contacted portion 112a of the open lever 112 to rotate the open lever 112 in the open direction. Door D cannot be opened.

(When the inside handle 3 is opened in the unlocked state)
As shown in FIG. 7, in the unlocked state, the connecting portion 6 of the push-pull cable 5 is engaged with the engaging groove 46 of the lock knob 4, and the inside handle 3 is in the movement path of the open arm portion 32. Located in the second position.

  In this unlocked state, when the inside handle 3 is opened and rotated from the non-operating position in the opening direction, the open arm 32 abuts against the rear surface of the connecting portion 6 as shown in FIG. The connecting portion 6 of the pull cable 5 comes out of the engaging groove 46 of the lock knob 4 and engages with the engaging groove 35 of the inside handle 3 to move in the open direction. Therefore, the opening operation of the inside handle 3 is transmitted to the inside lever 126 of the door latch device 100 via the push / pull cable 5. As a result, the inside lever 126 rotates in the opening direction from the unlock position, and the engaging portion 126b moves upward in the coupling groove 1241 while the lock lever 124 is stopped in the unlock position, and the opening action The portion 126c contacts the rotating end portion 127b of the outside lever 127 from below. Thereby, the outside lever 127 rotates in the open direction and operates the lift lever 125 in the open direction. Then, when the open contact portion 125b of the lift lever 125 contacts the open contacted portion 112a of the open lever 112, the open lever 112 rotates in the open direction, and the door latch device 100 opens so that the door D opens. Operate.

  After the door D is opened, when the inside handle 3 is returned to the non-operation position by the urging force of a return spring (not shown), the pushing arm portion 33 of the inside handle 3 pushes the connecting portion 6 backward to return to the second position. The movement of the connecting portion 6 is transmitted to the inside lever 126 via the push / pull cable 5, and the inside lever 126 also returns to the unlocked position.

  Further, as shown in FIG. 9, while the inside handle 3 is rotating in the opening direction, the blocking portion 34 of the inside handle 3 enters the movement path of the protrusion 45 of the lock knob 4 and protrudes. The portion 45 can come into contact with the inner peripheral surface 341 of the blocking portion 34, and the movement of the lock knob 4 from the unlocked position to the locked position is blocked. Accordingly, it is possible to reliably prevent an erroneous operation that erroneously moves the lock knob 4 from the unlock position to the lock position during the opening operation of the inside handle 3.

(When the outside handle OH is opened in the unlocked state)
When the outside handle OH is opened in the unlocked state, the outside lever 127 rotates in the opening direction, so that the door D can be opened in the same manner as when the inside handle 3 is opened. .

(When the lock knob 4 is unlocked when locked)
In the locked state shown in FIG. 6, when the lock knob 4 is unlocked and moved from the unlocked position to the locked position, the connecting portion 6 of the push-pull cable 5 is moved from the first position to the first position as shown in FIG. Move to position 2. As a result, the unlocking operation of the lock knob 4 is transmitted to the inside lever 126 via the push / pull cable 5. The inside lever 126 rotates from the locked position shown in FIG. 6 to the unlocked position shown in FIG. 7, and in conjunction with this, the engaging portion 126b and the coupling groove 1241 of the lock lever 124 engage with each other, The lock lever 124 rotates from the lock position to the unlock position against the urging force of the torsion spring 129. As the lock lever 124 rotates, the lift lever 125 also moves from the locked position to the unlocked position and switches to the unlocked state.

(When the lock knob is locked when unlocked)
When the lock knob 4 is locked in the unlocked state shown in FIG. 7, the lock operation of the lock knob 4 is transmitted to the inside lever 126 via the push / pull cable 5. The inside lever 126 rotates from the unlock position shown in FIG. 7 to the lock position opposite to the open direction, and the lock lever 124 is engaged with each other by the engagement portion 126b and the coupling groove 1241 of the lock lever 124. Against the urging force of the torsion spring 29, the lock lever rotates from the unlock position to the lock direction, and the lift lever 125 also moves from the unlock position to the lock position in accordance with the rotation of the lock lever 124. Switch to

(When the key cylinder or operation switch is unlocked in the locked state)
In the locked state shown in FIG. 6, when the key cylinder is unlocked or the motor 122 rotates in the unlocking direction by the unlocking operation of the operation switch, the lock lever 124 resists the urging force of the torsion spring 29. Then, it rotates from the locked position shown in FIG. 6 to the unlocked position shown in FIG. Thereby, the inside lever 126 rotates from the locked position to the unlocked state by the mutual engagement of the connecting groove 1241 of the lock lever 124 and the engaging portion 126b of the inside lever 126. Then, the rotation of the inside lever 126 is transmitted to the lock knob 4 via the push / pull cable 5 and the connecting portion 6, and the lock knob 4 moves from the locked position to the unlocked position and enters the unlocked state.

(When the key cylinder or operation switch is locked in the unlocked state)
In the unlocked state shown in FIG. 7, when the key cylinder is locked or the motor 122 rotates in the locking direction based on the locking operation of the operation switch, the lock lever 124 resists the urging force of the torsion spring 29. Rotate from the unlock position to the lock position. As a result, the engaging portion 126b of the inside lever 126 slides in the connecting groove 1241 of the lock lever 124 and moves downward, so that the inside lever 126 rotates from the unlock position to the lock position. Then, the rotation of the inside lever 126 is transmitted to the lock knob 4 via the push / pull cable 5 and the connecting portion 6, and the lock knob 4 moves from the unlock position to the lock position and switches to the locked state.

  The present invention is not limited to the configuration in which the lock knob 4 is pivotally supported by the case 2. For example, the lock knob 4 may be supported by the case 2 so as to be movable back and forth so that the lock knob 4 can be moved to the lock position and the unlock position.

  Further, the operating force transmission means is not limited to the push-pull cable 5, but may be a rod-like rod or link capable of transmitting a push-pull operation.

1 Inside operating device 2 Case 3 Inside handle 4 Lock knob 5 Push-pull cable (operating force transmission means)
6 Connecting part 7 Axis 8 Axis 20 Wall part 21 First guide path 22 Second guide path 23 Assembly opening 31 Handle part 32 Open arm part 33 Push arm part 34 Blocking part 35 Engaging groove 41 Operation part 42 Unlock arm part 43 Lock arm portion 44 Blocked arm portion 45 Projection portion 46 Engagement groove 100 Door latch device 110 Engagement portion 110a Open contact portion 111 Body 112 Open lever 112a Open contact portion 120 Operation portion 121 Housing 121a Stopper portion 122 Motor 123 Worm 124 Lock lever (lock / unlock means)
124a Gear part 124b Long hole 124c Connection shaft part 1241 Connection groove 1241a Bent part 124d Projection 125 Lift lever (lock / unlock means)
125a Long hole 125b Open contact portion 126 Inside lever 126a Connection portion 126b Engagement portion 126c Open action portion 127 Outside lever 127a Inside end portion 127b Rotating end portion 128 Support shaft 129 Torsion spring 130 Support shaft 341 Inner peripheral surface 342 Outer surface D Door OH Outside handle

Claims (3)

An inside operating device including an inside handle disposed inside the door and operable in an open direction from a non-operating position; and a lock knob disposed inside the door and operable in a lock position and an unlock position;
Engagement means that is disposed on the door and engages with a striker on the vehicle body side to restrain the door in a closed position, and the engagement means based on an operation of an outside handle provided on the outside of the door. Lock / unlock means that can be switched between an unlocked state that can be released from the striker and a locked state that cannot be released, a lock position where the lock / unlock means is locked, and an unlocked state that is also unlocked. A door latch device including an inside lever that is movable to a locked position and is movable from an unlocked position to an open direction capable of releasing the engagement between the meshing means and the striker;
The operation of the lock knob to the unlock position is transmitted to the inside lever to move the inside lever to the unlock position, and the operation of the lock knob to the lock position is transmitted to the inside lever to lock the inside lever. When the lock knob is in the unlock position, the operation of the inside handle in the opening direction is transmitted to the inside lever while the lock knob is in the unlock position to open the inside lever from the unlock position. When the lock knob is in the lock position, the lock knob and the inside handle are arranged so that the operation in the opening direction of the inside handle is not transmitted to the inside lever while the lock knob is in the lock position. Serial door locking system of the door for a motor vehicle, characterized in that it comprises a single operating force transmitting means for linking the inside lever.   When the lock knob is in the unlocked position, the operating force transmitting means is within the movement trajectory of the open arm portion that operates in accordance with the operation in the opening direction of the inside handle, and is accompanied by the opening operation of the inside handle. By moving the inside lever in the opening direction by contacting the open arm portion, and when the lock knob is in the locked position, the inside handle is retracted out of the movement locus of the open arm portion. 2. The door lock system for an automobile door according to claim 1, wherein the door is not moved in accordance with the opening operation.   3. The door lock system for an automobile door according to claim 1, wherein the operating force transmission means is a single push-pull cable capable of transmitting a push-pull operation.

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