JP6708489B2 - Door lock device - Google Patents

Description

The present invention relates to a door lock device.

A door lock device is known in which a transmission member is connected to a door handle of a vehicle via a rod and an open lever, and a striker is disengaged by a latch mechanism via the transmission member by operating the door handle. In this door lock device, when a large impact is applied to the door and the door panel is deformed to lower the rod, the transmission member is opened. At this time, if the door lock device is unlocked, the door may be opened.

Patent Document 1 discloses a door lock device that uses, as a transmission member, a resin lever body, a metal inertial lever, and a switching lever including a coil spring. In this door lock device, when a large impact is applied to the door, the inertia lever is tilted to an angle at which the latch mechanism cannot engage with the biasing force of the coil spring. This prevents the door from opening due to impact.

JP, 2011-26780, A

However, in the door lock device of Patent Document 1, since the coil spring does not expand and contract during normal use, the grease applied to the coil spring solidifies with time. In addition, foreign matter such as dust adheres to the grease. The solidification of the grease and the foreign matter prevent normal expansion and contraction of the coil spring. Therefore, when a shock is applied to the door, unintended opening of the door by the switching lever may not be reliably prevented.

An object of the present invention is to provide a door lock device that can reliably prevent the door from being opened due to impact.

The present invention is capable of engaging and disengaging a striker, a latch mechanism having an operation receiving portion for releasing the engagement of the striker, an open lever that rotates in conjunction with operation of a door handle, and a rotation of the open lever. It can be swung between an unlocked position that can move forward and backward and can transmit the rotational force of the open lever to the operation receiving portion, and a locked position that cannot transmit the rotational force of the open lever to the operation receiving portion. While urging the transmission member and the transmission member from the lock position toward the unlock position, when an inertial force of a set value or more acts on the transmission member, the transmission member moves toward the lock position from the unlock position. There is provided a door lock device including a spring member that allows the transmission member to move, and a spring operating unit that expands and contracts the spring member by advancing and retracting the transmission member by rotation of the open lever.
In the first aspect of the present invention, the transmission member has an input portion at one end rotatably attached to the open lever, and a guided portion at the other end provided on the side opposite to the input portion. The spring member is arranged on the other end side of the transmission member so as to bias the guided portion.
In a second aspect of the present invention, the transmission member is formed with a guided portion extending in the advancing/retreating direction of the transmission member, and the guided portion swings the transmission member to the unlock position and the lock position. The lock lever is held by a lever main body, a first guide portion provided on the lever main body so as to be located on one side of the guided portion, and the other side of the guided portion. Is provided so as to be movable with respect to the lever main body so as to be positioned at, and the guided portion is brought into contact with the first guide portion by the biasing force of the spring member to guide the guided portion so that the guided portion can move forward and backward. In addition, the second guide portion holds the guided portion moved to the unlock position so as to be movable to the lock position side.
In a third aspect of the present invention, the transmission member includes a main body attached to the open lever, and a metal mass body rotatably attached to a tip of the main body in the advancing direction, and the mass body is Is urged by the spring member so as to be located on a straight line with respect to the main body along the advancing direction of the main body.

In this door lock device, when a strong shock is applied to the door, the shock causes the entire door lock device to move. As a result, when an inertial force of a set value or more acts on the transmission member, the transmission member itself tries to continue to stay at the current position. At this time, when the door lock device is in the unlocked state, the transmission member moves to the locked position against the biasing force of the spring member. Therefore, even if the connecting member that connects the door handle and the open lever moves in the door opening operation direction due to an impact, the door does not open. In addition, during normal use of the vehicle, when the user operates the door handle and the transmission member moves back and forth through the open lever, the spring operating unit causes the transmission member to expand and contract.

In the door lock device of the present invention, the spring member can be expanded and contracted by the spring operating portion every time the door handle is operated during normal use, so that the grease applied to the spring member can be prevented from solidifying. In addition, foreign matter attached to the grease can be forcibly removed. Therefore, when an inertial force of a set value or more is applied to the transmission member, it is possible to maintain a state in which the transmission member can move toward the lock position against the biasing force of the spring member. As a result, it is possible to reliably prevent unintentional opening of the door due to strong impact on the vehicle door.

The perspective view of the door lock device attached to the door. The perspective view which looked at the door lock device attached to the door from the other direction. The front view of the latch mechanism which engaged the striker. The front view of the latch mechanism which opened the striker. The front view of the lock mechanism of a 1st embodiment set to an unlocked state. The front view of the lock mechanism of 1st Embodiment set to the locked state. The front view which shows a lock mechanism when a shock is added in an unlocked state. The front view which shows the state of the open lever which moved to the initial position, a link, and a lock lever. The front view which shows the state of the open lever which moved to the advance position, a link, and a lock lever. The front view of the link which is a lock mechanism. The right view of the link of FIG. 5A. The front view of the lock lever which is a lock mechanism. FIG. 6B is a sectional view taken along line I-I of FIG. 6A. The front view which shows the modification of the link of 1st Embodiment. The front view which shows the other modification of the link of 1st Embodiment. The front view which shows the link and lock lever of 2nd Embodiment. The front view which shows the link and lock lever of 3rd Embodiment. The front view which shows the link and lock lever of 4th Embodiment. The front view which shows the link and lock lever of 5th Embodiment. The front view which shows the open lever of 5th Embodiment in an unlocked state, a link, and a lock lever. The front view which shows the open lever, link, and lock lever of 5th Embodiment which were in the locked state.

Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
1A and 1B show a door lock device 10 according to the first embodiment. The door lock device 10 is arranged in the door 1 of the vehicle and is connected to a door handle (not shown) via a rod (connecting member) 6. The door lock device 10 of the present embodiment surely prevents the door 1 from being opened due to a large impact applied to the door 1.

In the following description, the vehicle length direction of the door 1 is called the X direction, the vehicle height direction of the door 1 is called the Y direction, and the vehicle width direction of the door 1 is called the Z direction. Further, the direction of the arrow on the X axis may be referred to as +X direction, and the opposite direction may be referred to as -X direction. The +X direction is the direction toward the hinge-side end of the door 1 (opposite to the end face 2). The direction of the arrow on the Y axis may be referred to as +Y direction, and the opposite direction may be referred to as -Y direction. The +Y direction is the direction toward the upper side in the height direction of the door 1. In addition, the direction of the arrow on the Z axis may be referred to as +Z direction, and the opposite direction may be referred to as -Z direction. The +Z direction is a direction toward the vehicle inner side of the door 1 (inner panel 3 side).

(overall structure)
The door lock device 10 includes a housing 12 that is L-shaped in a plan view. The first mounting portion 13 of the housing 12 is arranged along the end surface 2 of the door 1 parallel to the YZ plane, and the second mounting portion 14 of the housing 12 is arranged along the inner panel 3 of the door 1 parallel to the XY plane. It is arranged. A fence block 15 is arranged in the first mounting portion 13, and a part of the surface of the fence block 15 is covered with a metal cover 16.

A latch mechanism 18, a lock mechanism 25, and an opening mechanism 54 are arranged on the fence block 15. 2A and 2B, the latch mechanism 18 includes a fork 19 and a claw lever 21, and releasably engages the U-shaped striker 8 attached to the vehicle body. Referring to FIGS. 3A and 3B, the lock mechanism 25 includes a link 27 and a lock lever 36, and the engagement of the striker 8 by the latch mechanism 18 can be released into an unlockable state and a non-releasable locked state. Switch to. The opening mechanism 54 includes an open lever 55 that transmits the operating force of the door handle to the link 27. One end of the open lever 55 is connected to the rod 6, the other end is connected to the link 27, and an intermediate portion is rotatably supported by a shaft portion 15a provided on the fence block 15. A switching mechanism (not shown) that switches the state of the lock mechanism 25 is arranged in the second mounting portion 14.

When the door 1 in the open state is closed, the striker 8 enters the engaging groove 20 of the fork 19 to rotate the fork 19 counterclockwise from the open position shown in FIG. 2B to the engaged position shown in FIG. 2A. Rotate to. Then, as shown in FIG. 2A, the claw lever 21 is locked to the fork 19 to maintain the engagement state between the fork 19 and the striker 8. As a result, the door 1 is held in a closed state with respect to the vehicle body.

When the door handle is opened, the rod 6 linearly moves downward in FIG. 1A, and the open lever 55 rotates clockwise in FIG. 2A. Then, the link 27 that constitutes the transmission member is interlocked and moves linearly from the initial position shown in FIGS. 3A and 3B toward the advanced position shown in FIG. 4B. When the opening operation of the door handle is stopped, a spring (not shown) that urges the open lever 55 causes the link 27 to retract from the advanced position to the initial position.

When the lock mechanism 25 is in the unlocked state shown in FIG. 3A during the opening operation, the link 27 transmits the rotational force of the open lever 55 to the claw lever 21 as an operating force. The operation receiving portion 22 of the claw lever 21 penetrates the fence block 15 and projects toward the link 27 side. The link 27 presses the operation receiving portion 22 upward, and the claw lever 21 is rotated clockwise in FIG. 2A, whereby the locking of the claw lever 21 and the fork 19 is released. Then, as shown in FIG. 2B, the striker 8 can be detached from the fork 19 by rotating the fork 19 clockwise toward the open position by the urging force of the spring (not shown). As a result, the door 1 can be opened to the vehicle body.

When the lock mechanism 25 is in the locked state shown in FIG. 3B during the opening operation, the link 27 directly moves diagonally upward, and therefore swings without contacting the operation receiving portion 22 of the claw lever 21. Therefore, the locking of the claw lever 21 and the fork 19 cannot be released, and the engagement of the fork 19 and the striker 8 cannot be released, so that the door 1 is maintained in a state where it cannot be opened to the vehicle body.

Switching between the unlocked state and the locked state is performed by the switching mechanism in the second mounting portion 14. For example, the switching mechanism includes a key lever connected to the cylinder lock of the door 1. Further, the lock lever 36 is provided with a connecting portion 40 for connecting with the switching mechanism at a position communicating with the inside of the second mounting portion 14.

When the cylinder lock is locked, the lock lever 36 rotates clockwise from the unlock position shown in FIG. 3A to the lock position shown in FIG. 3B. Then, the upper end of the link 27 swings counterclockwise, so that the link 27 is locked. On the other hand, when the cylinder lock is unlocked, the lock lever 36 rotates counterclockwise from the lock position shown in FIG. 3B to the unlock position shown in FIG. 3A. Then, the upper end of the link 27 swings clockwise to enter the unlocked state.

Generally, when the door lock device is in the unlocked state, a large impact is applied to the door 1 to deform the outer panel 4 and the rod 6 moves in the opening operation direction, so that the door 1 can be opened. Therefore, in the present embodiment, as shown in FIG. 3C, when a large impact IF is applied to the door 1, the unlocked lock mechanism 25 is temporarily switched to the locked state. This prevents the door 1 from opening due to impact.

(Details of temporary lock operation)
As shown in FIGS. 3C to 4B, the link 27 is swingably arranged with respect to the lock lever 36, and is biased by the spring member 48 toward the unlock position. When an inertial force of a preset value or more acts on the link 27, the link 27 moves from the unlock position to the lock position against the biasing force of the spring member 48. In addition, when the inertial force acting on the link 27 is less than the set value, the link 27 is configured to be maintained in the unlocked position.

Specifically, the link 27 is a mass body made of a metal material. Here, the mass body is made of a material having a larger specific gravity than a resin which is a molding material for other members, and an impact force is applied to the door lock device 10 by an impact IF so that the mass body continues to stay at the current position. Means a member capable of The link 27 is connected to the lock lever 36 so as to be swingable and movable back and forth. Referring to FIGS. 5A and 5B together, the link 27 includes an input portion 28 formed at a lower end (one end in the Y direction), a connecting portion 29 formed at an upper end (the other end in the Y direction), and an intermediate portion. And an operating portion 34 formed on the.

An open lever 55 is rotatably connected to the input unit 28. The connecting portion 29 is arranged so as to overlap with the +X side of the lock lever 36. A guide hole 30 extending in the advancing/retreating direction of the link 27 (generally the Y direction) is formed in the connecting portion 29. A portion of the connecting portion 29 located on the unlock position side (+Z side) of the guide hole 30 constitutes a guided portion 31 that extends along the advancing/retreating direction Y of the link 27. The operation portion 34 projects between the input portion 28 and the connecting portion 29 in the −X direction on the claw lever 21 side.

As shown in FIGS. 3C to 4B, the lock lever 36 includes a lever main body 38, and a spring member 48 is arranged on the lever main body 38. That is, the spring member 48 of the present embodiment constitutes a part of the lock lever 36. The lock lever 36 is held at the switched unlocked position and locked position by a spring 37 arranged on the fence block 15.

Referring to FIGS. 6A and 6B together, the lever main body 38 includes a shaft portion 39 for rotatably attaching to the fence block 15. The lever main body 38 is provided with the above-described connecting portion 40 so as to be positioned apart from the shaft portion 39. On the lower side of the lever body 38, a protrusion 41 arranged on the fence block 15 side (−X side) of the connecting portion 29 of the link 27 is provided. The protruding portion 41 is provided with a stopper portion 42 and a guide piece 43.

The stopper portion 42 is a first guide portion that protrudes in the +X direction in which the connecting portion 29 of the link 27 is arranged and is located on the unlock position side (+Z side) of the guided portion 31 of the link 27. The guide piece 43 has an arc shape centered on the shaft portion 39, protrudes from the protruding portion 41 to the lock position side (−Z side), and the connecting portion 29 of the link 27 is arranged on the +X side surface. An insertion groove 44 is formed between the guide piece 43 and the shaft portion 39. As most clearly shown in FIG. 6B, the wall thickness of the protrusion 41 in the X direction is larger than the wall thickness of the guide piece 43. As a result, a contact portion 45 for stopping the movement of the spring member 48 is formed on the −X side of the guide piece 43 in the protruding portion 41. Further, the lever body 38 is provided with a locking portion 46 that locks the end portion of the spring member 48.

The spring member 48 is a kick spring that biases the link 27 in the +Z direction from the locked position to the unlocked position. The winding portion 49 is arranged on the shaft portion 39 so as to be located on the +X side of the lever body 38. The first arm portion 50 is locked to the locking portion 46 of the lever body 38. The second arm portion 51 projects toward the link 27 side through the insertion groove 44 and the −X side of the guide piece 43.

A guide protrusion 52 that is inserted into the guide hole 30 of the link 27 is provided at the tip of the arm portion 51. The guide protrusion 52 is a second guide portion located on the lock position side (−Z side) of the guided portion 31. Further, the guide protrusion 52 is movable in the Z direction along the guide piece 43, and holds the guided portion 31 in contact with the stopper portion 42 by the urging force of the spring member 48. The guide protrusion 52 is inserted into the guide hole 30, and the guided portion 31 is sandwiched between the guide protrusion 52 and the stopper portion 42, whereby the link 27 is guided so as to be able to move forward and backward.

Next, the operating principle when an inertial force of a set value or more acts on the link 27 will be described.

In the unlocked state shown in FIG. 3A, when a shock IF (see FIG. 3C) is applied to the door 1 from the vehicle outer side to the vehicle inner side, the shock IF causes the entire door lock device 10 to rapidly move in the +Z direction. .. At this time, the lock lever 36 is maintained in the state of being rotated to the unlock position by the biasing force of the spring 37. On the other hand, the link 27 continues to stay at the current position due to its own mass. Then, as shown in FIG. 3C, the link 27 is moved to the lock position side against the biasing force of the spring member 48.

The set value that allows the movement of the link 27 toward the lock position is determined by the impact force applied to the door 1, the mass of the link 27, and the urging force of the spring member 48. If this set value is too large, it becomes difficult for the link 27 to move toward the locked position when a shock is applied. If the set value is too small, the link 27 will move toward the locked position even when the door 1 is opened and closed. That is, it is not preferable that the set value is too large or too small. Therefore, in this embodiment, when the impact force that deforms the outer panel 4 is applied to the door 1, the weight of the link 27 and the attachment of the spring member 48 are adjusted so that the link 27 moves toward the lock position. Power is set.

In the door lock device 10 configured as described above, when an inertial force of a predetermined value or more acts on the link 27, the link 27 temporarily moves to the lock position. Therefore, even if the rod 6 moves in the opening operation direction due to a large impact applied to the door 1, the door 1 is not opened. The link 27 moved to the lock position side is again moved to the unlock position by the urging force of the spring member 48. At this time, when the rod 6 is still moved to the opening operation position, the operation portion 34 comes into contact with the side of the operation receiving portion 22, so that the door 1 is not opened.

(Maintaining the biasing force of the spring member)
Grease is applied to the spring member 48 to improve the slidability with respect to the lever body 38. However, if the grease solidifies or foreign matter adheres, the normal expansion and contraction of the spring member 48 is hindered. Therefore, in the present embodiment, each time the user operates the door handle during normal use of the vehicle, the spring member 48 is expanded/contracted to prevent the solidification of the grease and also to remove the foreign matter attached to the grease. There is.

As shown in FIGS. 4A to 5A, the lock mechanism 25 is provided with a spring actuating portion that expands and contracts the spring member 48 in the Z direction when the link 27 advances and retracts due to the rotation of the open lever 55. The spring actuating portion is formed by the width W of the guided portion 31 which is different depending on the position of the link 27 in the advancing direction. The width W of the guided portion 31 is defined as a direction (generally Z direction) orthogonal to the advancing/retreating direction of the link 27 (generally Y direction).

Specifically, a curved portion 33 that curves toward the lock position is formed on one side 32 of the guided portion 31 that abuts on the stopper portion 42. Further, the guide hole 30 forming the other side of the guided portion 31 includes a curved portion 30a and a straight portion 30b. The curved portion 30a is formed along the shape of the curved portion 33, and the straight portion 30b is formed so as to extend in a direction away from the curved portion 33. The curved portion 30a is formed on the tip side in the advancing direction of the link 27, and the straight portion 30b is formed on the end side in the advancing direction of the link 27. As a result, as shown in FIG. 4A, the width W1 of the guided portion 31 on the tip end side (+Y side) in the advancing direction of the link 27 is as shown in FIG. 4B. It is smaller than the width W2 of the guided portion 31 on the side.

In this door lock device 10, when the link 27 is advanced by the opening operation of the door handle, the guided portion 31 pushes the guide protrusion 52 toward the lock position, whereby the spring member 48 is compressed. Further, when the opening operation of the door handle is stopped, the link member 27 retracts via the open lever 55, and the spring member 48 extends. The expansion/contraction of the spring member 48 due to the advance/retreat of the link 27 is performed in both the unlocked state and the locked state of the lock mechanism 25.

As described above, in the present embodiment, during normal use of the vehicle, the spring member 48 can be expanded and contracted each time the link 27 advances and retracts by operating the door handle. Therefore, it is possible to prevent the grease applied to the spring member 48 from solidifying, and forcibly remove the foreign matter attached to the grease. Therefore, when an inertial force of a set value or more acts on the link 27, the link 27 can be maintained in a movable state against the biasing force of the spring member 48 toward the lock position. As a result, it is possible to reliably prevent unintended opening of the door 1 due to a strong impact applied to the door 1 of the vehicle.

Further, since the guide protrusion 52 of the spring member 48 has both the function of urging the link 27 to the unlock position and the function of guiding the link 27 in the advancing/retreating direction, the number of parts can be reduced and simplification is achieved. be able to. Further, since the guided portion 31 has a function of a spring actuating portion by setting the width W, the spring member 48 can be reliably expanded and contracted by directly moving the link 27 by operating the door handle.

(Modification of the first embodiment)
The link 27 forming the spring actuating portion may be as shown in FIGS. 7A and 7B. In these modifications, the curved portion 33 is not formed on the one side 32 of the guided portion 31.

In the guide hole 30 of FIG. 7A, a linear portion 30b extending along one side 32 of the guided portion 31 is formed at the tip end side in the advancing direction of the link 27, and the guided portion 30 is guided at the end side in the advancing direction of the link 27. A curved portion 30a extending in a direction away from the one side 32 of the portion 31 is formed. As a result, the width W1 of the guided portion 31 on the tip side in the advancing direction of the link 27 can be made smaller than the width W2 of the guided portion 31 on the distal side in the advancing direction of the link 27. Even in this case, the spring member 48 can be compressed by the advancing of the link 27, and the spring member 48 can be expanded by retracting the link 27. Therefore, the same operation and effect as those of the first embodiment can be obtained.

In the guide hole 30 shown in FIG. 7B, a curved portion 30a extending in a direction away from the one side 32 of the guided portion 31 is formed at the tip end side in the advancing direction of the link 27, and at the end side of the link 27 in the advancing direction. A straight portion 30b extending along one side 32 of the guided portion 31 is formed. As a result, the width W1 of the guided portion 31 on the tip side in the advancing direction of the link 27 can be made larger than the width W2 of the guided portion 31 on the distal side in the advancing direction of the link 27. With this configuration, the spring member 48 can be expanded by the advance of the link 27, and the spring member 48 can be compressed by the retreat of the link 27. Therefore, the same operation and effect as those of the first embodiment can be obtained.

(Second embodiment)
FIG. 8 shows a lock mechanism 25 used in the door lock device of the second embodiment. In the second embodiment, the link 27 is swingably connected to the lock lever 36 via the sub-lever 58. The sub-lever 58 is rotatably arranged on the shaft portion 39 of the lever body 38. A guide protrusion 59 that is inserted into the guide hole 30 of the link 27 is formed at the tip of the sub-lever 58. The arm portion 51 of the spring member 48 is locked to the side edge of the sub lever 58 on the lock position side. Thus, the sub-lever 58 is biased from the locked position to the unlocked position by the biasing force of the spring member 48, and the link 27 is biased via the sub-lever 58. Therefore, since the spring member 48 can be expanded and contracted each time the link 27 advances and retracts, the same operation and effect as in the first embodiment can be obtained.

(Third Embodiment)
FIG. 9 shows a lock mechanism 25 used in the door lock device of the third embodiment. In the third embodiment, the link 27 is not provided with the guide hole 30 and the entire connecting portion 29 is used as the guided portion 31. The arm portion 51 of the spring member 48 is locked to the side edge 61 of the connecting portion 29 on the lock position side. Further, the side edge 61 of the connecting portion 29 is formed with a protruding portion 62 that protrudes from the front end side in the advancing direction of the link 27 toward the end side toward the lock position side. In the third embodiment thus configured, the width W1 of the connecting portion 29 on the tip side of the link 27 in the advancing direction of the link 27 can be made smaller than the width W2 of the connecting portion 29 on the end side in the third embodiment. Therefore, since the spring member 48 can be expanded and contracted each time the link 27 advances and retracts, the same operation and effect as in the first embodiment can be obtained.

(Fourth Embodiment)
FIG. 10 shows a lock mechanism 25 used in the door lock device of the fourth embodiment. In the fourth embodiment, a dedicated spring operating portion 65 different from the guided portion 31 is formed. The spring actuation portion 65 includes a first interference portion 67 provided on one side 66 of the link 27 located on the unlock position side and a second interference portion 69 provided on the fence block 15 shown in FIG. 3A. When the link 27 advances due to the opening operation of the door handle, the first interference portion 67 and the second interference portion 69 interfere with each other, so that the link 27 is swung to the lock position side.

The first interference portion 67 is a triangular prism-shaped protrusion that protrudes toward the unlock position. The first interference portion 67 is provided with an inclined portion 68 on the tip end side in the advancing direction of the link 27, which is inclined with respect to the advancing/retreating direction of the link 27 and moves the link 27 toward the lock position.

The second interference portion 69 is provided at a position where the second interference portion 69 interferes with the first interference portion 67 when the link 27 that has moved to the unlocked position moves back and forth. The second interference portion 69 is a pentagonal prism-shaped protrusion formed beside one side 66 of the link 27 provided with the first interference portion 67. The second interference portion 69 is provided with an inclined portion 70 on the end side in the advancing direction of the link 27, which is inclined with respect to the advancing/retreating direction of the link 27 and moves the link 27 toward the lock position.

In the fourth embodiment thus configured, the link 27 is moved back and forth by the interference portions 67 and 69 as the link 27 advances and retracts, and is returned to the unlock position side by the biasing force of the spring member 48. Be done. After that, the operating portion 34 of the link 27 presses the operation receiving portion 22 of the claw lever 21 shown in FIG. 3A, whereby the engagement of the striker by the latch mechanism can be released. Further, since the spring member 48 can be expanded and contracted each time the link 27 advances and retracts, the same operation and effect as in the first embodiment can be obtained.

(Fifth Embodiment)
FIG. 11 shows a lock mechanism 25 used in the door lock device of the fifth embodiment. In the fifth embodiment, the link 27 is formed with the first interference portion 67 including the inclined portion 68, and the fence block 15 (see FIG. 3A) is formed with the columnar second interference portion 69 having no inclined portion. There is. Alternatively, the link 27 may be formed with a first interference portion having no inclined portion, and the fence block 15 may be formed with a second interference portion having an inclined portion. Even in this case, the same operation and effect as those of the fourth embodiment can be obtained.

(Sixth Embodiment)
12A and 12B show a door lock device 10 of the sixth embodiment. In this door lock device, the link 27 is composed of two members. Specifically, the link 27 includes a link body 72 connected to the open lever 55 and a mass body 73 rotatably arranged on the link body 72.

The link main body 72 has a quadrangular prism shape, and an open lever 55 is rotatably connected to the input unit 28 on the lower end side. The mass body 73 is formed of a metal material in a quadrangular prism shape, and is rotatably attached to the tip of the link body 72 in the advancing direction. The mass body 73 is biased by the spring member 48 so that the link body 72 and the mass body 73 are located on a straight line along the advancing direction of the link 27. The link 27 is arranged on the fence block so that the biasing direction of the mass body 73 by the spring member 48 is from the locked position to the unlocked position.

As shown in FIG. 12B, the lock mechanism 25 enters the locked state by pressing the mass body 73 toward the lock position by the lock member 74. Further, by releasing the pressing force of the lock member 74, the mass body 73 is urged toward the unlock position by the urging force of the spring member 48, and the unlocked state shown in FIG. 12A is obtained.

The mass body 73 is provided with a first interference portion 67, and the fence block is provided with a second interference portion 69. Therefore, when the link 27 advances in the unlocked state shown in FIG. 12A, the interference of the interference portions 67 and 69 causes the mass body 73 to swing toward the lock position. When the first interference part 67 moves over the second interference part 69, the mass body 73 is biased toward the unlock position by the biasing force of the spring member 48. After that, by making contact with the operation receiving portion 22 of the claw lever 21, the engagement of the striker by the latch mechanism can be released.

In the sixth embodiment thus configured, when the inertial force of the set value or more acts on the mass body 73, the mass body 73 moves toward the lock position against the biasing force of the spring member 48. Therefore, when a strong impact is applied to the door 1 of the vehicle, the door 1 does not open unexpectedly. Further, the spring member 48 can be expanded and contracted each time the lock state and the unlock state are switched and the link 27 is moved back and forth, so that the mass body 73 can be surely maintained in a movable state when an inertial force is applied. it can.

The door lock device 10 of the present invention is not limited to the configuration of the above embodiment, and various modifications can be made.

The present invention is characterized in that when the link 27 advances and retreats via the open lever 55 by the operation of the door handle, the spring member 48 is expanded and contracted by the link 27, and the structure of the spring actuating portion therefor can be configured as desired. It can be changed.

1 Door 2 End Face 3 Inner Panel 4 Outer Panel 6 Rod 8 Striker 10 Door Lock Device 12 Housing 13 First Mounting Part 14 Second Mounting Part 15 Fence Block 15a Shaft Part 16 Cover 18 Latch Mechanism 19 Fork 20 Engagement Groove 21 Claw Lever 22 Operation Receiving Section 25 Lock Mechanism 27 Link (Transmission Member)
28 input part 29 connecting part 30 guide hole 30a curved part 30b straight part 31 guided part (spring actuating part)
32 one side 33 curved portion 34 operation portion 36 lock lever 37 spring 38 lever body 39 shaft portion 40 connecting portion 41 projecting portion 42 stopper portion (first guide portion)
43 Guide piece 44 Insertion groove 45 Abutment part 46 Locking part 48 Spring member 49 Winding part 50 Arm part 51 Arm part 52 Guide protrusion (second guide part)
54 Opening Mechanism 55 Open Lever 58 Sub Lever 59 Guide Projection (Second Guide)
61 Side Edge 62 Projection Part 65 Spring Actuating Part 66 One Side 67 First Interference Part 68 Inclined Part 69 Second Interference Part 70 Inclined Part 72 Link Body 73 Mass Body 74 Lock Member

Claims (9)

A latch mechanism capable of engaging and disengaging the striker and having an operation receiving portion for releasing the engagement of the striker,
With an open lever that rotates in conjunction with the operation of the door handle,
Between an unlocked position that can be moved forward and backward by the rotation of the open lever and that can transmit the rotational force of the open lever to the operation receiving portion, and a locked position that cannot transmit the rotational force of the open lever to the operation receiving portion. A transmission member that can swing between
When the transmission member is biased from the lock position toward the unlock position, and when an inertial force of a set value or more acts on the transmission member, the transmission member moves from the unlock position toward the lock position. A spring member that allows
E Bei a spring actuating section for stretching the spring member by advancing and retracting of the transmission member by the rotation of the open lever,
The transmission member has an input portion at one end rotatably attached to the open lever, and a guided portion at the other end provided on the side opposite to the input portion,
The door lock device, wherein the spring member is arranged on the other end side of the transmission member so as to bias the guided portion . The guided portion extends in forward and backward direction of the transmission member, is held in front Symbol transmission member to the lock lever is swung to the unlocking position and the locking position,
Said lock lever,
And the lever body,
A first guide portion provided on the lever body so as to be located on one side of the guided portion;
The guided portion is provided movably with respect to the lever main body so as to be located on the other side of the guided portion, and the guided portion is brought into contact with the first guide portion by the urging force of the spring member. The door lock device according to claim 1, further comprising: a second guide portion that guides the portion so that the portion can be moved back and forth, and that movably holds the guided portion that has been moved to the unlock position to the lock position side. A latch mechanism capable of engaging and disengaging the striker and having an operation receiving portion for releasing the engagement of the striker,
With an open lever that rotates in conjunction with the operation of the door handle,
Between an unlock position that can be moved forward and backward by the rotation of the open lever and that can transmit the rotational force of the open lever to the operation receiving portion, and a lock position that cannot transmit the rotational force of the open lever to the operation receiving portion. A transmission member that can swing between
When the transmission member is biased from the lock position toward the unlock position, and when an inertial force of a set value or more acts on the transmission member, the transmission member moves from the unlock position toward the lock position. A spring member that allows
A spring operating portion that expands and contracts the spring member by advancing and retracting the transmission member by rotation of the open lever;
Equipped with
A guided portion that extends in the forward and backward direction of the transmitting member is formed on the transmission member, and the guided portion is held by a lock lever that swings the transmission member to the unlock position and the lock position. ,
Said lock lever,
And the lever body,
A first guide portion provided on the lever body so as to be located on one side of the guided portion;
The guided portion is provided movably with respect to the lever main body so as to be located on the other side of the guided portion, and the guided portion is brought into contact with the first guide portion by the urging force of the spring member. with movably guiding the part, and a second guide portion for movably holding the guided part is moved to the unlocking position to the locking position side, de alloc device. The door lock device according to claim 2 , wherein the second guide portion is provided at one end of the spring member. The second guide portion, the provided swingably disposed to the sub-lever in the lever main body, the transmission member via the sub-lever is biased by the spring member, according to claim 2 or 3 Door lock device. The spring actuating portion is configured by the guided portion,
The door lock device according to any one of claims 1 to 5, wherein a width of the guided portion in a direction intersecting with an advancing/retreating direction of the transmission member differs depending on a position of the transmission member in the advancing direction. .. A latch mechanism capable of engaging and disengaging the striker and having an operation receiving portion for releasing the engagement of the striker,
With an open lever that rotates in conjunction with the operation of the door handle,
Between an unlock position that can be moved forward and backward by the rotation of the open lever and that can transmit the rotational force of the open lever to the operation receiving portion, and a lock position that cannot transmit the rotational force of the open lever to the operation receiving portion. A transmission member that can swing between
When the transmission member is biased from the lock position toward the unlock position, and when an inertial force of a set value or more acts on the transmission member, the transmission member moves from the unlock position toward the lock position. A spring member that allows
A spring operating portion that expands and contracts the spring member by advancing and retracting the transmission member by rotation of the open lever;
Equipped with
The transmission member includes a main body attached to the open lever, and a metal mass body rotatably attached to a tip of the main body in the advancing direction,
The door lock device, wherein the mass body is biased by the spring member so as to be located on a straight line along the advancing direction of the main body with respect to the main body . The spring operating portion is
A first interference part provided on one side of the transmission member;
Provided next to the transmission member of the first interference portion interferes with the first interfering portion and a second interfering portion for oscillating the transmission member, any one of claims 1 to 5, 7 The door lock device according to item 1. At least one of the first interference portion and the second interference portion is provided with an inclined portion that is inclined with respect to the advancing/retreating direction of the transmission member and that moves the transmission member toward the lock position. Item 8. The door lock device according to item 8 .

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