CN111379481A

CN111379481A - Door lock system

Info

Publication number: CN111379481A
Application number: CN201911016069.2A
Authority: CN
Inventors: 大桥道夫
Original assignee: Mitsui Kinzoku ACT Corp
Current assignee: Mitsui Kinzoku ACT Corp
Priority date: 2018-12-28
Filing date: 2019-10-24
Publication date: 2020-07-07
Also published as: JP2020105878A; JP6940038B2

Abstract

The invention provides a door lock system which facilitates control when a door is closed. In a door lock system for controlling opening and closing of a trunk door (C) by engaging a latch unit (10) of the trunk door (C) with a lock pin unit (20) of a vehicle body (B), the lock pin unit (20) is provided with a lock pin (21), the trunk door (C) is moved in a closing direction when the lock pin (21) performs a closing operation in a state where the latch unit (10) is engaged, and the trunk door (C) is moved in an opening direction when a pop-up operation is performed, the latch unit (10) is provided with a latch (12) and a door control switch (14), the latch (12) is engaged with the lock pin (21) at a half-latch position and a full-latch position, respectively, to restrict the opening of the trunk door (C), and the lock pin unit (20) only when the lock pin (21) is disposed at the pop-up position and the door control switch (14) detects that the latch (12) is disposed at the full-latch position, a closing action is initiated.

Description

Door lock system

Technical Field

The present invention relates to a door lock system for controlling opening and closing of a vehicle door, and more particularly to a door lock system capable of moving a lock pin to a closed position and an eject position.

Background

For example, patent document 1 (japanese patent laid-open publication No. 2004-100225) describes a door lock system provided between a vehicle body and a door. In the door lock system, the lock pin is provided in a relatively movable manner with respect to the vehicle main body, and an actuator for moving the lock pin is provided. The door is provided with a locking unit which is provided with a locking device capable of being clamped with the locking pin when the door is closed. According to the above door lock system, when the striker is engaged with the striker in a state where the striker is disposed at the pop-up position, the striker is disposed from the pop-up position to the closed position by the closing operation of the striker, and the door is in a closed state with respect to the vehicle main body.

However, in a vehicle door to which a driver, a passenger, and the like can enter and exit, it is necessary that the latch can engage with the lock pin at a so-called half-lock position. In the latch unit capable of selecting the half-lock position, a closing actuator is usually incorporated, and when the half-lock position is set, the closing actuator can rotate the latch to the full-lock position. Therefore, in the above-described door lock system in which the lock pin moves, when the latch unit incorporating the actuator for closing is used, if the latch is disposed at the half-latched position, two different actuators operate, and the control at the time of closing the door becomes complicated.

Disclosure of Invention

In view of the above-described problems, an object of the present invention is to provide a door lock system that can facilitate control when closing a door.

To achieve the above object, the door lock system of the present invention comprises: a latch unit provided on either one of a vehicle body and a door supported so as to be openable and closable with respect to the vehicle body; and a lock pin unit provided on either one of the vehicle body and the door, the lock pin unit controlling opening and closing of the door by engagement between the lock unit and the lock pin unit, the lock pin unit including a lock pin movable to a closed position and an eject position and moving the door in a closing direction with respect to the vehicle body when performing a closing operation toward the closed position in a state of being engaged with the lock unit, and moving the door in an opening direction with respect to the vehicle body when performing an eject operation toward the eject position, the lock unit being provided with a lock movable between a half-lock position and a full-lock position and holding a state of being engaged with the lock pin at the half-lock position and the full-lock position, respectively, the door is restricted from opening with respect to the vehicle body, and the lock pin unit starts the closing operation only when the lock pin is disposed in the pop-up position and the lock detection sensor detects that the lock is disposed in the full lock position.

In the above-described door lock system, the lock detection sensor is a door control switch that detects whether or not the lock is in the fully locked position, and the door lock system includes a control unit that notifies that the lock is not in the fully locked position.

In the door lock system of the present invention, the control unit may notify the user by turning on an indicator. According to the invention, it is possible to recognize that the locking unit is in the half-locked position.

In the door lock system, the latch unit may start a releasing operation when a request signal for opening the door is received in a state where the latch is disposed at the full lock position. According to the present invention, the door can be opened by, for example, operating an open switch provided in the vehicle or an open switch provided in the wireless remote controller.

In addition, in the present invention, the latch pin unit includes: a mounting base that supports the lock pin so that the lock pin can move; a movable member supported by the mounting base so as to move in a direction intersecting a moving direction of the lock pin; and a cam mechanism provided between the movable member and the lock pin, and converting the movement of the movable member into the movement of the lock pin, wherein the lock pin unit is provided on either one of the vehicle body and the door via the mounting base, and the lock pin is moved between the closed position and the pop-up position by the movement of the movable member. According to the present invention, since the movable member must be moved to move the lock pin, the lock pin does not malfunction even when vibration or impact is applied.

In addition, in the present invention, the latch pin unit includes: a driving member that reciprocates by the operation of a driving source; and a link member connected between the active member and the movable member, and transmitting the reciprocating movement of the active member to the movable member. According to the present invention, the lock pin can be moved between the closed position and the eject position by the action of a drive source.

In the door lock system according to the present invention, the driving member is reciprocally rotated by the operation of the driving source. According to the present invention, since the lock pin can be moved without changing the position of the driving member, it is advantageous in terms of installation space.

In the door lock system, the link members are respectively flexible, and include a first string-shaped body that transmits the forward movement of the active member to the movable member, and a second string-shaped body that transmits the backward movement of the active member to the movable member. According to the present invention, the positions of the movable member and the active member can be changed, and the degree of freedom of installation can be increased, which is advantageous in terms of versatility.

According to the present invention, the lock detection sensor detects only whether or not the lock is in the fully locked position, and the lock pin is closed only when the lock is in the fully locked position, so that the control can be facilitated. Further, an actuator for moving the latch from the half-lock position to the full-lock position is not required, which is advantageous in terms of manufacturing cost.

Drawings

Fig. 1 is a schematic view of a rear right end portion of a vehicle to which a door lock system according to an embodiment of the present invention is applied, and is a side partially enlarged view of a fully closed state of a trunk door as a door.

Fig. 2 is a side partially enlarged view of the vehicle shown in fig. 1 in a state where the trunk door is disposed at the pop-up position.

Fig. 3 is a side view of the vehicle shown in fig. 1 in a state where a trunk door is open.

Fig. 4 is an external perspective view of a latch unit applied to the door lock system shown in fig. 1.

Fig. 5 is a perspective view showing an internal structure of the latch unit shown in fig. 4.

FIG. 6 is a perspective view of a key portion of the latch unit shown in FIG. 4 from another angle.

Fig. 7 shows a portion of the latch unit shown in fig. 4, which engages with the lock pin, fig. 7 (a) is a view showing a state in which the latch is disposed at the full lock position, fig. 7 (b) is a view showing a state in which the latch is disposed at the half lock position, and fig. 7 (c) is a view showing a state in which the latch is disposed at the open position.

Fig. 8 is a main part exploded perspective view of a striker pin unit applied to the door lock system shown in fig. 1.

Fig. 9 shows a striker unit applied to the door lock system shown in fig. 1, where fig. 9 (a) is a bottom view of a state where the striker is arranged at the closed position, and fig. 9 (b) is a top plan view of a main portion thereof.

Fig. 10 shows a striker unit applied to the door lock system shown in fig. 1, where fig. 10 (a) is a bottom view of a state where the striker is disposed at the pop-up position, and fig. 10 (b) is a top plan view of a main portion thereof.

Fig. 11 is a block diagram showing a control system of the door lock system shown in fig. 1.

Description of the reference numerals

10 latch unit

12 card lock

14-door control switch

20 locking pin unit

21 locking pin

22 mounting base

22a cam through hole

23 cam plate

23a cam hole

27 cam roller

28 cam pin

30A cable

30B cable

32 driving belt wheel

34 sliding motor

100 control part

102 indicating lamp

B vehicle body

C trunk door

Detailed Description

Hereinafter, preferred embodiments of the door lock system according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 to 3 show essential parts of a vehicle to which a door lock system according to an embodiment of the present invention is applied. The vehicle exemplified here is a so-called minivan or so-called monocoque type vehicle including a vehicle body B having an opening a in the rear surface thereof and a trunk door (door) C for opening and closing the rear surface opening a of the vehicle body B. The opening A on the back surface of the vehicle body B communicates with the space in the vehicle compartment, and substantially the entire back surface can be opened. The rear opening a is openable and closable by a hinge D provided between the trunk door C and the upper edge portion of the rear opening a and rotating about a horizontal axis (a direction perpendicular to the plane of the drawing in fig. 1 to 3) extending in the lateral direction of the vehicle body B.

A latch unit 10 is provided at a lower edge of a trunk door C of the vehicle, and a lock pin unit 20 is provided at a lower edge of a rear opening a of a vehicle body B. The following describes the structure of the latch unit 10 and the striker unit 20 in detail, and also describes the characteristic portions of the present invention. For convenience of explanation, the directions of the respective components of the latch unit 10 and the striker unit 20 are determined in the posture of the vehicle in which the vehicle is mounted. In this case, the portion on the right side of the vehicle is the right side, and the portion on the left side is the left side.

The latch unit 10 is for engaging and holding a lock pin 21 of a lock pin unit 20 described later, and is attached to the trunk door C via the housing 11. As shown in fig. 4 to 6, the latch unit 10 includes a latch 12 and a ratchet 13 inside a housing 11. The latch 12 is a plate-like member rotatably disposed via a latch shaft 12a, and the latch shaft 12a extends upward and downward of the vehicle body B at a portion on the side of the lock pin insertion groove 11a provided in the housing 11. The latch 12 is provided with a hook portion 12b, and the hook portion 12b engages with the lock pin 21 entering the lock pin entering groove 11a to restrict the lock pin 21 from being disengaged. Although not shown in the drawings, a return spring 12c is provided between the latch 12 and the housing 11, and the return spring 12c urges the latch 12 to rotate counterclockwise in fig. 7. The ratchet 13 is a plate-shaped member rotatable by a ratchet shaft 13a, and the ratchet shaft 13a extends vertically along the other side of the lock pin insertion groove 11 a. The ratchet 13 is engaged with the rotating latch 12 from the open position shown in fig. 7 (c), and can restrict the counterclockwise rotation of the latch 12. More specifically, as shown in fig. 7 (b), the ratchet 13 can be engaged with the latch 12 at a half-lock position where the hook portion 12b is located at the opening end portion of the striker entering groove 11a, and as shown in fig. 7 (a), the ratchet 13 can be engaged with the latch 12 at a full-lock position where the hook portion 12b is located at the inner side end portion of the striker entering groove 11 a. Although not shown in the drawings, a ratchet spring 13b is provided between the ratchet 13 and the housing 11, and the ratchet spring 13b urges the ratchet 13 to rotate clockwise in fig. 7. When the latch 12 is disposed at the open position, the latch 12 and the ratchet 13 are not engaged with each other as shown in fig. 7 (c).

Further, the latch unit 10 is provided with a gate switch (latch detection sensor) 14, a release lever 15, and a release actuator 16. The door switch 14 detects the rotational position of the latch 12 relative to the housing 11 by means of a detection projection 12d provided on the end face of the latch 12. In the present embodiment, the gating switch 14 is configured to: the latch 12 outputs an off signal when it is disposed in the fully latched position and outputs an on signal when it is disposed outside the fully latched position. The release lever 15 can be rotated on the housing 11 by means of a lever shaft 15 a. The lever shaft 15a extends in the substantially front-rear direction of the vehicle above the ratchet 13, and the lever shaft 15a rotatably supports the release lever 15 on the housing 11 in a state where the operating end portion 15b of the release lever 15 extends downward. When the release lever 15 rotates clockwise in fig. 5, the action end 15b abuts against the input end 13c of the ratchet 13, and the ratchet 13 can rotate counterclockwise against the urging force of the ratchet spring 13 b. Although not shown in the drawings, a separation spring 15c is provided between the separation lever 15 and the housing 11, and the separation spring 15c applies a force to rotate the separation lever 15 counterclockwise in fig. 5. The release actuator 16, when driven, rotates the release lever 15 clockwise in fig. 5 against the urging force of the release spring 15 c. In the present embodiment, the separation actuator 16 includes a separation motor 16a, a worm gear 16b, and a spiral cam 16 c. The separation motor 16a is a motor that can rotate in forward and reverse directions. The worm gear 16b is a speed reducer including a worm 16b1 attached to the drive shaft of the separation motor 16a, and a worm wheel 16b3 rotatably disposed on the housing 11 via a worm shaft 16b 2. The spiral cam 16c and the worm wheel 16b3 are integrally provided, and abut on the input end portion 15d of the separation lever 15 via the outer peripheral surface. In the illustrated example, the input end portion 15d of the release lever 15 is held in contact with the outer peripheral surface of the spiral cam 16c at a position below the rotation center of the worm wheel 16b3 by the biasing force of the release spring 15 c. The spiral cam 16c is formed such that: when the worm wheel 16b3 rotates, the distance from the center of rotation to the outer peripheral surface thereof gradually changes.

Specifically, when the worm wheel 16b3 is at the initial position, as shown in fig. 6, the position on the outer peripheral surface of the spiral cam 16c where the separation lever 15 abuts is closest to the rotation center of the worm wheel 16b 3. Therefore, the release lever 15 keeps the working end portion 15b separated from the input end portion 13c of the ratchet 13 on the left side. When the worm wheel 16b3 rotates counterclockwise in fig. 5 from this state, the outer peripheral surface of the spiral cam 16c gradually moves away from the center of the worm wheel 16b3, and as a result, the release lever 15 rotates clockwise in fig. 5 against the urging force of the release spring 15c, and the action end 15b of the release lever 15 abuts against the input end 13c of the ratchet 13. Then, the release lever 15 rotates with the rotation of the worm wheel 16b3, and the ratchet 13 rotates counterclockwise in fig. 5, whereby the engagement state with the latch 12 is released (releasing operation). When the engagement state of the ratchet 13 and the latch 12 is released, the latch 12 is rotated counterclockwise by the biasing force of the return spring 12c, and the engagement state of the lock pin 21 and the like of the latch 12 is released. Subsequently, if the worm wheel 16b3 is rotated in the reverse direction, the release lever 15 is rotated counterclockwise by the biasing force of the release spring 15c, the operating end 15b returns to the state of being released from the input end 13c of the ratchet 13, and the ratchet 13 can be engaged with the latch 12 again.

On the other hand, as shown in fig. 8 to 10, the lock pin unit 20 includes: a mounting base 22 serving as a reference; a lock pin 21 disposed on the upper surface side of the mounting base 22; and a cam plate (movable member) 23 and a Wedge switch (Wedge switch)24 disposed on the lower surface side of the mounting base 22.

The mounting base 22 is a plate-like member having a dimension in the lateral direction increased with respect to the dimension in the front-rear direction thereof, and is mounted to the vehicle body B via the fixing bolt E. The mounting base 22 is provided with a cam through hole (cam mechanism) 22a and two plate guide holes 22 b. The cam through-hole 22a is a long hole-shaped through-hole formed on a center line bisecting the mounting base 22 in the left and right directions, and is formed along the front-rear direction of the vehicle body B. The plate guide holes 22b are groove-like notches provided on both side portions of the cam through hole 22a, and are formed along the left-right direction of the vehicle.

The lock pin 21 includes a base plate 21a and an engagement link 21b held by the base plate 21 a. The base plate 21a has a substantially pentagonal shape with a linear rear edge and a projecting front edge, and has slide guide holes 21c at both left and right ends and a pin attachment hole 21d at a projecting portion in front. The slide guide holes 21c are elongated holes extending in the front-rear direction and are parallel to each other. The pin mounting hole 21d is a circular hole penetrating the base plate 21 a. The engaging link 21b is substantially U-shaped, has both end portions arranged in the front-rear direction, and is fixed to the central portion of the base plate 21a via the both end portions. The outer diameter of the catching link 21b is smaller than the width of the striker entering groove 11a so as to enter the striker entering groove 11a provided on the housing 11 of the latch unit 10. The slide guide pin 25 is attached to the attachment base 22 through the slide guide hole 21c, and the lock pin 21 is disposed in the center portion of the upper surface of the attachment base 22 in a state where the pin attachment hole 21d is located inside the cam through hole 22 a. As is apparent from the drawing, the slide guide pin 25 has a shaft portion 25a having a smaller diameter than the slide guide hole 21c and a head portion 25b having a larger diameter than the slide guide hole 21 c. Thus, the lock pin 21 can move in the front-rear direction of the vehicle body B in a state where its movement in the direction away from the mounting base 22 is prevented. The mounting position of the mounting base 22 and the range of movement of the lock pin 21 relative to the mounting base 22 are set to: when the lock pin 21 moves to the forefront with respect to the attachment base 22 in the state where the latch 12 of the latch unit 10 is engaged with the engagement link 21B, the trunk door C is completely closed with respect to the vehicle body B. Hereinafter, the position where the lock pin 21 moves to the forefront with respect to the mounting base 22 is referred to as a closed position, and the position where the lock pin moves to the rearmost is referred to as an eject position. The movement of the lock pin 21 toward the closed position with respect to the attachment base 22 is referred to as a closing movement, and the movement toward the pop-up position is referred to as a pop-up movement.

The counter attachment base 22 and the cam plate 23 are plate-shaped members having a dimension in the front-rear direction of about 1/2 and a dimension in the left-right direction of less than 1/2. The cam plate 23 is disposed on the rear surface of the mounting base 22 at a portion on the front side by the mounting pin 26 mounted through the plate guide hole 22 b. The mounting pin 26 has a shaft portion 26a smaller in diameter than the plate guide hole 22b and a head portion 26b larger in diameter than the plate guide hole 22 b. Thus, the cam plate 23 can move in the left-right direction of the vehicle body B in a state where its movement in the direction away from the mount base 22 is prevented. The cam plate 23 is provided with a cam hole (cam mechanism) 23a, two cable hooks 23b, and two switch driving portions 23 c.

The cam hole 23a is a groove-like cutout having substantially the same width as the cam through-hole 22a of the mounting base 22, and is formed obliquely so as to change the opening position with respect to the cam through-hole 22a when the cam plate 23 moves left and right with respect to the mounting base 22. More specifically, the cam hole 23a is inclined in the following manner: when the cam plate 23 is moved to one moving end in the left-right direction, for example, the moving end on the right side shown in fig. 10, with respect to the mounting base 22, the cam hole 23a is located at the rear end portion of the cam through hole 22a, and when the cam plate is moved to the other moving end in the left-right direction, for example, the moving end on the left side shown in fig. 9, the cam hole 23a is located at the front end portion of the cam through hole 22 a. A cam roller (cam mechanism) 27 is disposed in the cam hole 23 a. The cam roller 27 is a cylindrical member having an outer diameter fitted to the cam hole 23a, and the cam roller 27 is attached to the base plate 21a via a cam pin (cam mechanism) 28 inserted through the center portion in a state inserted through the cam hole 23a and the cam through-hole 22a of the attachment base 22. The cam pin 28 has a disk-shaped head portion 28b having a diameter larger than that of the cam roller 27 at a distal end portion of a columnar shaft portion 28a, and the cam pin 28 projects downward from a lower surface of the base plate 21a facing the mounting base 22 by fitting a proximal end portion of the shaft portion 28a into the pin mounting hole 21 d.

The cable hooks 23b are hook-shaped portions provided at both left and right end portions of the cam plate 23. One end portions of cables (rope-like bodies) 30A and 30B are individually engaged with the cable hooks 23B. The

cables

30A and 30B are movably disposed inside a cylindrical outer tube 31, and the other end portions thereof engage with a common drive pulley (driving member) 32. Although not shown in the drawings, one end of the outer tube 31 is fixed to an end of the mounting base 22, and the other end is fixed to a support 33 of the drive pulley 32. The drive pulley 32 has a disc shape having protrusions 32a at both end surfaces of a central portion thereof, and the cable 30A engaged with the one cable hook 23B is engaged with the one protrusion 32a, and the cable 30B engaged with the other cable hook 23B is engaged with the other protrusion 32 a. The two

cables

30A and 30B are engaged with the boss 32a so that one is wound around the boss 32a when the other is drawn out from the boss 32a, and the other is wound around the boss 32a when the other is drawn out from the boss 32 a. The length of the cable 30B wound around when one cable 30A is drawn out from the boss 32a is set to be substantially equal to the length of the plate guide hole 22B formed in the mounting base 22. That is, when the drive pulley 32 rotates in one direction, the one cable 30A is drawn out from the boss 32a, and the other cable 30B is wound around the boss 32a, and moves to one side by the cable hook 23B and the cam plate 23 with which the wound cable 30B is engaged. Similarly, when the driving pulley 32 rotates in the other direction, the other cable 30B is drawn out from the boss 32a, and the one cable 30A is wound around the boss 32a, and is moved to the other side by the cable hook 23B and the cam plate 23 with which the wound cable 30A is engaged.

The drive pulley 32 is rotatable about the axial center by driving of a slide motor (drive source) 34. The slide motor 34 is a motor that can rotate in the forward and reverse directions, as is the separation motor 16 a. That is, the driving pulley 32 driven by the slide motor 34 is capable of reciprocating rotation about the axial center in the forward and reverse directions. A worm gear 35 including a worm 35a and a worm wheel 35b is provided between the drive shaft of the slide motor 34 and the drive pulley 32. In the present embodiment, the drive pulley 32 and the slide motor 34 are disposed at positions where the axial center thereof and the drive shaft thereof are twisted.

The switch driving portion 23c is a protruding portion protruding rearward from both end portions of an edge portion located on the rear side of the cam plate 23. The switch driving portion 23c is provided on the cam plate 23, and when the cam plate 23 is moved in the left-right direction with respect to the mounting base 22, the switch driving portion 23c of one of the two switch driving portions 23c is located at the center portion of the mounting base 22.

The terminal 24b of the wedge switch 24 is provided so as to be tiltable with respect to the switch main body 24a, and the wedge switch 24 outputs a detection signal corresponding to the tilting direction of the terminal 24 b. The terminal 24b is opposed to the rear edge portion of the cam plate 23, and the wedge switch 24 is mounted on the mounting base 22 via the switch main body 24a in a state where the switch driving portion 23c can alternatively abut against the terminal 24 b.

Fig. 11 is a block diagram showing a control system of the door lock system. The control unit 100 shown in fig. 11 controls the lighting of the indicator lamp 102 and the driving of the separation motor 16a and the slide motor 34 based on the detection result of the open switch 101, the detection result of the wedge switch 24, and the detection result of the gate switch 14. The open switch 101 is provided in the cabin of the vehicle body B or on a wireless remote controller owned by the driver. If the open switch 101 is operated, a request signal for opening the trunk door C is given to the control unit 100. The indicator lamp 102 is a tail lamp provided behind the vehicle body B or an indoor lamp provided indoors.

The control content of the control unit 100 will be described below. For convenience of explanation, in the present vehicle, as shown in fig. 3, a trunk door C is opened and a rear opening a of a vehicle body B is opened. At this time, the latch unit 10 is arranged in the open position of the latch 12 as shown in fig. 7 (c), and in the lock pin unit 20, the cam roller 27 is positioned on the rear end side of the cam through hole 22a and arranged in the pop-up position with respect to the attachment base 22 and the lock pin 21 as shown in fig. 10 (b). At this time, as shown in fig. 10 (a), the cam plate 23 is in a state of being disposed at the moving end on the right side with respect to the mounting base 22.

When the trunk door C is operated and the rear opening a of the vehicle body B is closed from the above state, the lock pin 21 of the lock pin unit 20 enters the lock pin entering groove 11a provided in the housing 11 of the latch unit 10, and the lock pin 21 rotates the latch 12. As a result, the latch 12 reaches the full lock position shown in fig. 7 (a) via the half lock position shown in fig. 7 (b). However, immediately after the lock pin 21 is disposed at the full lock position, the lock pin 21 of the lock pin unit 20 is disposed at the pop-up position, and therefore, as shown in fig. 2, the vehicle body B and the trunk door C do not reach the full close state, and the state is popped up.

When the latch 12 moves to the full lock position, a detection signal is output from the gate switch 14, and the control unit 100 detects this. When the control unit 100 detects that the latch 12 is disposed at the full lock position, the slide motor 34 is driven to move the cam plate 23 to the left with respect to the mounting base 22. In this way, the cam roller 27 disposed in the cam hole 23a of the cam plate 23 and the cam through hole 22a of the mounting base 22 moves forward by the tilting action of the cam hole 23a, and the lock pin 21 starts the closing operation and reaches the closed position. As a result, the latch unit 10 engaged with the lock pin 21 moves together with the lock pin 21, and as shown in fig. 1, the fully closed state is achieved with respect to the vehicle body B and the trunk door C. When it is detected by the wedge switch 24 that the cam plate 23 has reached the moving end on the left side, the control unit 100 stops the driving of the slide motor 34.

On the other hand, if the open switch 101 is operated from the fully closed state of the trunk door C, the control unit 100 first drives the release motor 16a to release the engagement state of the ratchet 13 and the latch 12 via the release lever 15. In this way, the latch 12 is rotated toward the open position by the return spring 12C, and the trunk door C is pushed out in the opening direction by a reaction force of a seal, not shown, provided between the vehicle body B and the trunk door C. The control unit 100 detects that the latch 12 is not disposed at the full lock position by the gate switch 14, and drives the slide motor 34 in the reverse direction to the previous direction, thereby moving the cam plate 23 to the right side with respect to the mounting base 22. Thus, the cam roller 27 moves rearward, and the lock pin 21 performs the pop-up operation, and reaches the pop-up position in the near future.

Thereafter, the above-described operation is repeated to open or close the trunk door C with respect to the vehicle body B. Between these operations, the slide motor 34 is simply rotated to cause the lock pin 21 to perform the closing operation when the trunk door C is closed, and the separation motor 16a is simply rotated to cause the separation lever 15 to operate when the trunk door C is opened. Further, the latch 12 of the latch unit 10 may be disposed at the full lock position by driving the slide motor 34. Therefore, the control unit 100 of the door lock system does not need to perform complicated control.

When the latch 12 is stopped at the half-latched position due to a small operation force when the trunk door C is closed, the latch cannot be detected by the control unit 100, and therefore, the latch is kept arranged at the half-latched position. However, at this time, the indicator lamp 102 is kept lit by the control unit 100. Therefore, the driver and the fellow passenger can recognize that the trunk door C is held at the half-lock position. Thus, for example, when the open switch 101 is operated to transmit a request signal for opening the trunk door C, the latch 12 is placed at the open position by the releasing operation, and therefore, the trunk door C returns to the open state, and the trunk door C can be closed again.

In addition, in a state where the trunk door C is opened, a mischief or the like may occur, and the latch 12 of the latch unit 10 may be disposed at the full lock position because the trunk door C is not closed. At this time, since the control unit 100 causes the lock pin 21 to perform the closing operation at the timing when the full lock position is detected by the door courtesy switch 14, it can be recognized that the lock pin 21 is not in the pop-up position by a driver or the like who wants to close the trunk door C. Therefore, as long as the open switch 101 is operated to send a request signal for opening the trunk door C, the lock pin 21 is moved to the eject position, and the latch 12 is disposed at the open position, so that the trunk door C can be normally closed thereafter.

In the above-described embodiment, the door lock system is applied to the trunk door C provided in the rear opening a of the vehicle body B communicating with the cabin interior space, but the present invention is not limited to this, and may be applied to a trunk lid of a 3-compartment type vehicle, for example, to open and close the trunk. In this case, the door is not limited to opening and closing about the axis in the horizontal direction.

In the above-described embodiment, the striker unit is provided on the vehicle body and the latch unit is provided on the door, but the present invention is not limited to this, and the latch unit may be provided on the vehicle body and the striker unit may be provided on the door.

In the above-described embodiment, the cam plate 23 having a plate shape is used as the movable member, and the axial center of the drive pulley 32 and the drive shaft of the slide motor 34 are arranged at twisted positions, respectively, so that the lock pin unit can be made thin, which is advantageous in terms of installation space. However, the present invention is not limited thereto.

In the above embodiment, the indicator lamp 102 is turned on to give a visual notification when the latch 12 is not disposed at the full lock position, but a buzzer or the like may be used to give an audible notification in addition to or instead of the visual notification. In addition, as the latch unit, a member provided with a detection sensor that detects the half-lock position may be applied. In this case, the release actuator may be driven to place the latch in the open position when the trunk door is kept in the half-locked state.

Claims

1. A door lock system, comprising: a latch unit provided on either one of a vehicle body and a door supported so as to be openable and closable with respect to the vehicle body; and a lock pin unit provided on either one of the vehicle body and the door, and configured to control opening and closing of the door by engagement between the latch unit and the lock pin unit,

the lock pin unit includes a lock pin that is movable to a closed position and an eject position, and moves the door in a closing direction with respect to the vehicle body when performing a closing operation toward the closed position in a state of being engaged with the latch unit, and moves the door in an opening direction with respect to the vehicle body when performing an eject operation toward the eject position,

the latch unit is provided with a latch which is movable between a half-latch position and a full-latch position and restricts the opening of the door with respect to the vehicle body by maintaining a state of being engaged with the lock pin at the half-latch position and the full-latch position, respectively,

the lock pin unit starts the closing operation only when the lock pin is disposed in the pop-up position and the lock detection sensor detects that the lock is disposed in the full lock position.

2. The door lock system according to claim 1,

the latch detection sensor is a gate switch that detects whether the latch is in the fully latched position,

the door lock system includes a control unit that notifies that the latch is not disposed in the fully locked position when the latch detection sensor detects that the latch is disposed in the fully locked position.

3. The door lock system according to claim 2, wherein the control portion performs notification by lighting an indicator lamp.

4. The door lock system according to claim 1, wherein the latch unit starts a releasing action when a request signal for opening the door is obtained in a state where the latch is arranged at the full lock position.

5. The door lock system according to claim 1,

the latch pin unit includes:

a mounting base that supports the lock pin so that the lock pin can move;

a movable member supported by the mounting base so as to move in a direction intersecting a moving direction of the lock pin; and

a cam mechanism provided between the movable member and the lock pin, converting movement of the movable member into movement of the lock pin,

the lock pin unit is provided on either one of the vehicle body and the door via the mounting base, and the lock pin is moved between the closed position and the pop-up position by movement of the movable member.

6. The door lock system according to claim 5,

the latch pin unit includes:

a driving member that reciprocates by the operation of a driving source; and

and a link member connected between the active member and the movable member, and transmitting the reciprocating movement of the active member to the movable member.

7. The door lock system according to claim 6, wherein the driving member is reciprocally rotated by an action of the driving source.

8. The door lock system according to claim 6, wherein the link members each have flexibility, and are provided with a first string that transmits the forward movement of the active member to the movable member, and a second string that transmits the backward movement of the active member to the movable member.