JPH10115138A - Locking-release device for door body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a locking-release device, and to simplify the control of the locking-release device in the locking-release device, in which drawing-in operation from half-latch to full latch and the locking releasing operation of a door body are shared by one driving source and conducted. SOLUTION: An actuator 17 has an electric motor 21, and a body of revolution 19 fixed onto the output shaft 18 of the motor 21 is rotated in one direction in the counterclockwise direction in the figure. A circular motion by the revolution of the body of revolution 19 is converted into the rocking motion of a driving cam 13 through a link 20. The driving cam 13 is supported rotatably by a common support shaft 6 on the same shaft as a latch 5. When the driving cam 13 is rotated from a neutral place to the counterclockwise direction under the state of the state of the half latch of the latch 5, a second ratchet pushes in the latch 5 and turns the latch 5 to the place of full latch. When the driving cam 13 is revolved from the neutral place to the clockwise direction under the state of the place of full latch, the driving cam 13 is abutted against a pin 23 and pushes away a first ratchet 9, and the engagement of the latch 5 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a door closer device for detecting that a door such as a door or a trunk of a vehicle is in a half-latch state and forcibly closing the door to a full-latch state. And the like.

[0002]

2. Description of the Related Art For example, when a door of an automobile is closed, a large amount of force is required to close the door because a weatherstrip reaction force or a lock resistance acts immediately before the door is fully closed. Therefore, when the door is closed, the door often becomes a half door (half latch) state. In this case, the door must be closed again even if it is troublesome.

[0003] In order to solve such a problem, there is known a door closer device that forcibly closes the door to a full latch state when it detects that the door is a half latch. Normally, a door closer device has two functions: an unlocking function for unlocking a door; and a function for forcibly pulling a latch from a half latch position to a full latch position.
Conventionally, these functions are individually controlled using two actuators.
Therefore, the size of the door closer device is increased, and the manufacturing cost is high.

In order to solve such a problem, for example, Japanese Patent Publication No. Hei 5-27748 discloses a door lock device in which one actuator is used to perform a lock release function and a forced retraction function by one actuator. Door closer device) is disclosed.

That is, as shown in FIG. 34, a latch 83 having a recess 83a capable of restraining a striker 82 is always biased in a counterclockwise direction in FIG. 34 in a door lock mechanism 81 built in the door. It is provided so as to be rotatable about a shaft 84 in the state in which it is performed. If the force applied when closing the door is relatively weak, the latch 83 rotates only to the half-latch position shown in FIG. 34A even when the striker 82 hits, and the pole 85 is locked, and the position is regulated in this state. Is done. Further, if the force applied when closing the door is relatively strong, the latch 83 is completely rotated to the full latch position shown in FIG. 34B by hitting the striker 82, and the pawl (ratchet) 85 is locked. The position is regulated in this state.

The door closer device 86 provided with the door lock mechanism 81 is provided with one reversible motor 87 as an actuator as shown in FIG. When the reversible motor 87 is driven to rotate forward, the rotating plate 88 rotates clockwise in the figure from the neutral position, and one end of the output member 89 fixed to the rotating plate 88 contacts the arm 90. The rod 91 is brought into contact with and rotated to pull the rod 91. When the rod 91 is pulled, the latch 83 is forcibly rotated from the half latch position to the full latch position.

On the other hand, when the reversible motor 87 is driven in reverse rotation based on the operation of the opener, the rotating plate 88 is rotated from the neutral position in the counterclockwise direction in FIG.
The other end contacts the arm 92 to rotate it, and the rod 93 is pulled. When the rod 93 is pulled, the pawl 85 that restricts the position of the latch to the full latch position is rotated in the release direction, and the full latch (lock) of the door is released. Thus, since only one reversible motor 87 is provided, the size of the door closer device 86 is reduced, and the control thereof can be easily performed by one electric control device.

[0008]

However, it is necessary to arrange the rotating plate 88, which is rotated to pull the rods 91 and 93 in a towing motion, so that each surface is orthogonal to the latch 83. However, a layout in which the two members 83 and 88 are not arranged compactly has to be adopted. For this reason, the size reduction of the door closer device 86 has not been sufficient.

Further, the rotating plate 88 is set at a predetermined angle (for example,
Since the positioning is performed within the range of about 0 °), the forward / reverse motor 87 is driven forward / reverse within a relatively narrow angle range, and a relatively large torque is required for the forward / reverse motor 87. I was Therefore, the size of the forward / reverse motor 87 to be used becomes relatively large, which is one of the reasons why the size of the apparatus cannot be sufficiently reduced. In addition,
Since the door closer device is accommodated in a limited space such as the inside of a door, miniaturization has been an important issue.

Further, the reversible motor 87 requires forward / reverse rotation control, and there is a problem that the control of the motor becomes complicated as compared with a normal motor driven in one direction. In addition, since the reversible motor 87 is driven in two directions from the neutral position, a neutral sensor 94 is required, and relatively many detectors are required to control the reversible motor 87. Met. As the number of detectors increases, the control of the motor 87 becomes more complicated, and the control circuit has a complicated circuit configuration.

The present invention has been made in view of the above problems, and a first object of the present invention is to provide a single actuator that performs a retracting operation from a half latch to a full latch and an unlocking operation of a door body. In a shared locking and unlocking device,
It is an object of the present invention to provide a door locking / unlocking device capable of reducing the size of the device. It is a second object of the present invention to provide a control circuit for driving and controlling a driving source with a simple configuration, in addition to downsizing of the apparatus.

[0012]

In order to achieve the first object, according to the first aspect of the present invention, a drive source whose output shaft can be driven to rotate, and a driving source for locking a door body in a closed state. A latch that is rotatably provided in a position where it can be engaged with the stop portion and is urged in a direction to release the engagement with the lock portion; and moves the latch between a half latch position and a full latch position. Locking means for restricting the position, retracting means for rotating the latch from the half latch position to the full latch position, and releasing the locking by the locking means for restricting the latch to the full latch position And a rotation axis parallel to the rotation axis of the latch, and are driven to rotate by the driving of the driving source, thereby operating the retracting means and the locking release means. With a cam to let It is provided.

According to a second aspect of the present invention, in order to achieve the second object, in the door locking and unlocking apparatus according to the first aspect, the drive source has the output shaft rotated in only one direction. A rotating body that makes a circular motion in one direction based on the driving of the driving source, and operates the retracting means by the cam during the one-round rotation of the rotating body. And a power transmission mechanism that can be converted into a first swing area for operating the lock release means and a second swing area for operating the lock release means and transmitted to the cam.

According to a third aspect of the present invention, in the door locking and unlocking apparatus according to the second aspect, the power transmission mechanism is a link mechanism. According to the fourth aspect of the present invention, in the second aspect,
In the door locking and unlocking device according to the above, the power transmission mechanism may be configured to engage with the engaging portion provided at a position where the rotating body is capable of circular movement, and to engage with the engaging portion to be guided by the engaging portion. And a guide portion provided on the cam.

According to a fifth aspect of the present invention, in the door locking / unlocking apparatus according to any one of the first to fourth aspects, the latch is provided with an engaging surface with which the locking means is engaged. When,
The engaging surface with which the retracting means engages is formed in a two-stage structure in the thickness direction.

According to a sixth aspect of the present invention, in the door locking and unlocking device according to any one of the second to fifth aspects, the first detection for detecting that the latch is at the half-latch position. And a second detector for detecting that the rotating body is at a first position which is a starting point of a rotation range in which the retracting means is operated, and the unlocking means of the rotating body is operated. A third detector for detecting that it is at a second position which is a start point of a rotation range, an operation detector for detecting that an operation unit for opening the door body has been operated, and the latch, When the first detector detects that the rotating body is at the half-latch position, the rotating body is caused to circularly move in a rotation range from the first position to the second position, and the operation unit detects the operation unit. When the operation is detected, As circular motion with rotation range from the second position to the first position, and a control circuit for driving and controlling based on the signal of the drive source from the respective detectors.

According to a seventh aspect of the present invention, in the door locking and unlocking apparatus according to the sixth aspect, the drive source is an electric motor, and the control circuit cuts off the power supply to the electric motor. A braking circuit having switch means for electrically connecting the positive and negative terminals of the electric motor is provided.

According to the invention described in claim 8, in the door locking / unlocking device according to any one of claims 1 to 7, the door is driven by either the cam or manually. A swing member for operating the unlocking means is provided.

According to a ninth aspect of the present invention, in the door locking and unlocking apparatus according to the eighth aspect, the swing member is pivotally supported by the same rotation shaft as the locking means. (Operation) Therefore, according to the first aspect of the present invention, the driving source is driven to rotate the output shaft, so that the cam is driven to rotate about a rotation axis parallel to the rotation axis of the latch. . The retracting means and the unlocking means are operated by rotating the cam. When the retracting means is actuated by the cam, the latch is forcibly rotated from the half-latch position to the full-latch position. The latch is released, and the latch returns to the position for releasing the locking portion. Therefore, since the cam is arranged so as to have a rotation axis parallel to the rotation axis of the latch, the substantially plate-shaped cam and the latch are compactly arranged with their mutual planes parallel to each other. .

According to the second aspect of the present invention, the driving source is driven and the output shaft is driven to rotate in one direction.
The rotating body makes a circular motion in one direction. While the rotator makes one circular motion, the one-rotation circular motion of the rotator moves through the power transmission mechanism in the first swing area of the cam and in the second swing area of the cam. It is converted into motion and transmitted. Then, the retracting means is operated based on the movement of the cam in the first swing range,
The unlocking means is activated based on the movement of the cam in the second swing range. That is, when the rotating body rotates in a predetermined rotation range of one rotation, the retracting means is operated, and the latch is rotated from the half latch position to the full latch position,
When the rotating body rotates in the remaining predetermined rotation area of one rotation, the unlocking means is operated to release the locking by the locking means for restricting the position of the latch to the full latch position, and the latch is locked by the locking portion. Is returned to the position to release. Therefore,
One cycle of the operation of the retracting means and the unlocking means is performed by the circular motion of the rotator making one revolution. Therefore, the drive is performed by using the drive source that rotates the output shaft only in a certain direction. A relatively small source can be used, and control of the drive source can be relatively simple.

According to the third aspect of the present invention, since the power transmission mechanism is a link mechanism, a desired position distant from a cam provided near the latch by setting the length of the link constituting the link mechanism. It is possible to arrange the driving sources in the same manner, and the degree of freedom in the layout of the driving sources is increased.

According to the fourth aspect of the present invention, the guide is guided by the engaging portion which moves circularly based on the rotation of the rotating body, so that the cam swings. Therefore, it is not necessary to use a link or the like that leads to an increase in the number of parts as the power transmission mechanism. Further, for example, by adopting a configuration in which the rotating body is fixed to the output shaft of the drive source, the drive source can be arranged near the latch, the cam, and the like, and the arrangement of the components constituting the device can be consolidated. Becomes possible.

According to the fifth aspect of the present invention, the latch is formed in a two-stage structure having two engaging surfaces in the thickness direction, and the engaging surface with which the engaging means engages and the retracting means are provided. The engaging surface to be engaged is independent. Therefore, it is possible to determine the layout of the locking unit and the retracting unit without considering the interference between the locking unit and the retracting unit. Therefore, it is possible to collectively arrange and set the locking unit and the retracting unit. For example, a layout in which the latching means and the retracting means overlap with each other in the thickness direction of the latch is also possible. Therefore, it is easy to make the device compact. For example, application to a trunk is also possible.

According to the sixth aspect of the invention, the drive of the drive source is controlled by the control circuit based on signals from the detectors. First, when the first detector detects that the latch is at the half-latch position, driving of the drive source is started, and the rotating body rotates so as to make a circular motion from the first position in a certain direction. Then, when the third detector detects that the rotating body has rotated to the second position, the driving of the driving source is stopped. The retracting means is operated in this rotation range in which the rotating body rotates from the first position to the second position. Next, when the operation detector detects that the operation unit has been operated, the driving of the driving source is started, and the rotating body rotates so as to make a circular motion from the second position in a certain direction. When the second detector detects that the rotating body has rotated to the first position, the driving of the driving source is stopped. The unlocking means is operated in this rotation region where the rotating body rotates from the second position to the first position. Therefore, the number of detectors is relatively small,
The control circuit can be a simple circuit.

According to the present invention, when the power supply to the electric motor is cut off by the switch means, the switch means is connected so as to make both the positive and negative terminals of the electric motor conductive. Therefore, after the energization of the electric motor is cut off, the electric motor stops immediately due to the power generation braking via the braking circuit. Therefore, the accuracy of the position control of the electric motor is improved.

According to the eighth aspect of the present invention, even when a driving source such as an electric motor malfunctions and the latching state between the latch and the locking means cannot be released by the driving source, for example, By driving the swinging member which can be driven by either a cam or a manual operation, the lock releasing means can be operated. Therefore, a situation in which the door cannot be opened even at the time of the above-described trouble is avoided.

According to the ninth aspect of the present invention, the swinging member rotates about the same rotation axis as the locking means, and operates the unlocking means by this rotating operation. In such a case, the size of the locking and unlocking device can be minimized even if the swing member is additionally configured.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a door closer device 1 as a locking / unlocking device provided on a side door of an automobile. The door closer device 1 is built in a part of a side door 2 as a door body opposite to a striker 3 as a locking part provided on a center pillar (not shown) or the like, and the side door 2 is a half door (half latch). Strike 3 when in state
To the full latch state, and
Is a device that automatically closes completely. In the door closer 1, opening and closing control by operating an opener (not shown) provided inside and outside the side door 2 is also performed by electronic control.

As shown in FIG. 1, the door closer device 1 is provided with a substantially disk-shaped latch 5 in the vicinity of an insertion passage 4 into which the striker 3 is inserted so as to be rotatable about a support shaft 6.
It is urged clockwise in FIG. The position of the latch 5 is regulated by the stopper 8 in the biasing direction. A concave portion 5 a for inserting and guiding the striker 3 is provided on the outer peripheral edge of the latch 5.
, A latch surface 5b of the full latch, a latch surface 5c of the half latch, and an engagement groove 5d. In the vicinity of the latch 5, a first ratchet 9 as a locking means is supported by a support shaft 10
, And is urged by a spring 11 in a direction in which it comes into contact with the outer peripheral surface of the latch 5. First
The position of the ratchet 9 is regulated by a stopper 12 in the urging direction.

The state in FIG. 1 in which the latch 5 rotates in the biasing direction and abuts against the stopper 8 is an unlocked state. In this state, the striker 3 is not restrained by the recess 5a. When the striker 3 hits the latch 5 and the latch 5 is rotated in the counterclockwise direction in FIG. 1 against the urging force, the first ratchet 9 engages with one of the locking surfaces 5b and 5c. The position shown in FIG. 2 where the first ratchet 9 is engaged with the locking surface 5c is the half latch position of the latch 5, and the position shown in FIG. 4 where the first ratchet 9 is engaged with the locking surface 5b is the full latch of the latch 5. Position. When the latch 5 is located at the half-latch position or the full-latch position, the striker 3 is restrained by the recess 5 a in the insertion passage 4.

As shown in FIG. 1, a substantially L-shaped drive cam 13 as a cam is provided on the upper surface of the latch 5 (on the front side of the drawing in FIG. 1) so as to be rotatable about the support shaft 6. Have been. A second ratchet 14 is supported at the tip of the extension 13a of the drive cam 13 so as to be rotatable about a support shaft 15,
The second ratchet 14 is urged in a direction in which the second ratchet 14 comes into contact with the outer peripheral surface of the latch 5 by a spring 16 stretched between the driving cam 13 and the driving cam 13. The second ratchet 14 can be engaged with the engagement groove 5d when the latch 5 is located at the half latch position. The position of the drive cam 13 shown in FIG. 1 is a neutral position, and the drive cam 13 can swing left and right with respect to the neutral position.

The driving cam 13 is connected to an actuator 17
Rotator 19 fixed so as to be able to rotate integrally with output shaft 18 of
And a power transmission mechanism and a link 20 as a link mechanism. The first end of the link 20 is rotatably connected to the drive cam 13 and the support shaft 15, and the second end of the link 20 is eccentric to the surface of the rotating body 19 (the front side in FIG. 1). Position.

The actuator 17 has a housing 1
An electric motor 21 as a drive source is provided inside 7a. The output of the electric motor 21 is reduced through the reduction mechanism 22 and output from the output shaft 18 as a predetermined rotation speed.
Generally, the motor is smaller as the motor is driven at a higher speed. In this embodiment, a small motor driven at a higher speed is used, and the actuator 17 is configured with a built-in deceleration mechanism 22 so as to obtain an output of a required rotational speed. ing.

The rotation of the rotating body 19 in the counterclockwise direction causes the second end of the link 20 to make a circular motion in the same direction. Therefore, the first end of the link 20 is pushed out and retracted, and the drive cam 13 is pulled out. Swing about the support shaft 6.

The position of the rotating body 19 shown in FIG. 1 is the initial position, and when the side door 2 is opened, the rotating body 19 is always located at the initial position. Also, the rotating body 1 shown in FIG.
The position 9 is the home position and the side door 2
Is completely (fully latched), the rotating body 19 is always located at the home position.
In a state where the rotating body 19 is arranged at these two positions, the drive cam 13 is arranged at the neutral position.

When the rotating body 19 is rotated counterclockwise from the initial position to the home position while the latch 5 is at the half latch position shown in FIG. 2, the drive cam 13 is moved from the neutral position as shown in FIG. It reciprocates once on the left side and returns to the original neutral position. The swinging process (swinging range) of the drive cam 13 is a first swinging range, and the second ratchet 14 engaged with the engaging groove 5d is pushed out to the left in FIG. As a result, the latch 5 is forcibly rotated from the half latch position to the full latch position.

When the rotating body 19 is rotated counterclockwise from the home position to the initial position in a state where the latch 5 is at the full latch position shown in FIG. 4, the drive cam 13 is moved from the neutral position in FIG. Is reciprocated on the right side of the vehicle to return to the original neutral position.
The swinging process (swinging range) of the drive cam 13 is a second swinging range. In this swinging process, the extended portion 13b of the drive cam 13 is released from the lock by protruding from the first ratchet 9. The first ratchet 9 is engaged with the pin 23 constituting the means, pushes the first ratchet 9 away from the latch 5 against its urging force, and regulates the latch 5 to the half latch position or the full latch position. Is released.

When the driving cam 13 is rotated until the first ratchet 9 is pushed away, the regulating pin 24 is fixed at a position where it can be engaged with the second ratchet 14.
When the latch of the latch 5 by the first ratchet 9 is released by the swing of the third ratchet 9, the second ratchet 14 is arranged so as to be separated from the outer peripheral surface of the latch 5 as shown in FIG. . Therefore, when the latch of the latch 5 by the first ratchet 9 is released and the latch 5 pivotally returns to the unlock position by the urging force, the second ratchet 14 does not engage with the engagement groove 5d. ing.

On the outer peripheral surface of the rotating body 19, two detected parts 2
5 and 26 are protrudingly provided, and each of the detected parts 25 and 26 is positioned so as to form a central angle equal to the rotation angle (for example, 100 °) at which the rotating body 19 rotates from the home position to the initial position. ing. A sensor (micro switch) SW1 as a second detector and a sensor (micro switch) as a third detector are located at positions where the rotator 19 can be in contact with each of the detected parts 25 and 26 when in the home position. SW2 is arranged. A sensor (micro switch) SWR as a first detector for detecting whether the first ratchet 9 is engaged with each of the locking surfaces 5b, 5c is provided on the back side of the first ratchet 9. Have been.

The sensors SW1, SW2, and SWR operate as shown in FIG. That is, FIG.
As shown in (a) and (b), the sensor SW1 is "off" when its detection unit is in contact with the detected units 25 and 26.
Then, it turns “ON” when it is in a non-contact state with the detected parts 25 and 26. The sensor SW2 is connected to the “a contact” when the detection unit is in contact with the detected parts 25 and 26, and is connected to the “b contact” when the detection unit is not in contact with the detected parts 25 and 26. It has become. Also, the sensor SW
As shown in FIG. 8 (c), R is turned “off” when the detection unit is in contact with the first ratchet 9 and turned “on” when it is not in contact with the first ratchet 9. I have.

FIG. 7 shows a control circuit 27 for controlling the drive of the electric motor 21. The plus terminal of the electric motor 21 is connected to a battery (not shown), and the battery voltage “+”
B ”is applied. The plus terminal of the electric motor 21 is connected to its minus terminal via a relay Ry as a switch means, a sensor SW1 and a diode D.
The negative terminal of the electric motor 21 is connected to the contact C of the relay Ry. When a current flows through the relay Ry, the contact C is connected to the contact A. When no current flows through the relay Ry, the contact C is connected to the contact B. It is to be connected.
The A contact of the relay Ry is grounded, and the B contact is connected to the plus terminal of the electric motor 21. The stop of the drive of the electric motor 21 is performed by switching the connection destination of the C contact of the relay Ry from the A contact to the B contact,
When the C contact of the relay Ry is connected to the B contact, the positive and negative terminals of the electric motor 21 are short-circuited, and this circuit constitutes a braking circuit.

The negative terminal of the relay Ry is connected to the sensor SW2.
Switch S as an operation detector which is opened and closed based on the operation of the opener.
Grounded via W0. The contact b of the sensor SW2 is grounded together with the contact A of the relay Ry via the sensor SWR.

Next, the operation of the door closer device 1 configured as described above will be described. First, the operation of the door closer 1 when closing the side door 2 will be described. When the side door 2 is open, the rotating body 19 is located at the initial position shown in FIG. 1, the sensor SW1 is in an “off” state in contact with the detected part 26, and the sensor SW2 is in the detecting part. Are in a non-contact state and are connected to the “b contact”. Further, the sensor SWR is in the “OFF” state because the first ratchet 9 is not engaged with any of the locking surfaces 5b and 5c. As shown in FIG. 9, when the rotation angle θ of the rotating body 19 is in the initial position, “0”
° ”.

For example, if a sufficient force is not applied when closing the side door 2 and the latch 5 pushed by the striker 3 inserted into the insertion passage 4 rotates only to the half-latch position, the first ratchet 9 The latch 5 is engaged with the locking surface 5c, and the position of the latch 5 is regulated to the half-latch position shown in FIG. That is, the side door 2 is in a half-door state. In this state, as shown in FIG. 2, the second ratchet 14 is engaged with the engagement groove 5d. At this time, the first ratchet 9 engaged with the locking surface 5c
Is displaced to the latch 5 side, so that the sensor SWR
Switches from the off state to the on state.

When the sensor SWR is turned on, as shown in the control circuit 27 of FIG. 7 and the time chart of FIG.
, And the C contact of the relay Ry is connected to the A contact. As a result, the electric motor 21 is energized, and the rotating body 19 starts rotating counterclockwise from the state shown in FIG. 8A. When the rotating body 19 starts to rotate, the sensor SW1 stops contacting the detected part 26 and switches from the off state to the on state.

Then, as the rotating body 19 is rotated in one direction in the counterclockwise direction, the driving cam 13 is moved from the neutral position in FIG. Is rotated. As a result, the second ratchet 14 engaged in the engagement groove 5d forcibly pushes the latch 5 leftward in the figure, and the latch 5 is rotated counterclockwise in the figure. When the first ratchet 9 is disengaged from the locking surface 5c, the sensor SWR temporarily turns "off". However, since the sensor SW1 is already "on", the current flowing through the relay Ry may be cut off. No, electric motor 2
1 is not stopped.

Then, as shown in FIG. 3, when the rotating body 19 reaches the vicinity of the rotation angle θf (= about 130 °), the first ratchet 9 engages with the locking surface 5b and the latch 5
Is restricted to the full latch position shown in FIG. At this time, the sensor SWR is again turned on. Rotating body 19
Continue to rotate, and rotate until the detected portion 25 comes into contact with the sensor SW1 (rotation angle θ shown in FIGS. 4 and 8B).
When the sensor SW1 switches from the on state to the off state, no current flows through the relay Ry (non-excited state), and the C contact thereof is connected to the B contact to drive the electric motor 21. Stopped. The side door 2
Is closed (fully latched) without being in the half-door state, the electric motor 21 is driven in the same manner, and the rotating body 19 is also located at the home position. When the side door 2 is closed in the fully latched state, the rotating body 19 is always in the home position.

Next, the operation for opening the side door 2 will be described. In a state where the side door 2 is locked as shown in FIG. 4, the rotating body 19 is at a position where the rotation angle θ is about 260 ° as shown in FIGS. 4 and 8B. In this state, the sensor SW1 is in the “off” state, the sensor SW2 is in the state of being connected to the “a contact”, and the sensor SWR is in the “on” state.

For example, when an opener (not shown) provided on the side door 2 is operated, a switch S shown in FIG.
W0 is turned on. Then, the sensor SW2 is set to the “a contact”
, The current flows through the relay Ry (excitation state), and the C contact of the relay Ry is set to the “A contact”.
And the driving of the electric motor 21 is started. When the electric motor 21 is driven, the rotating body 19 starts rotating counterclockwise in FIG. When the rotating body 19 starts rotating, the connection of the sensor SW2 is switched from the contact a to the contact b, and at the same time (strictly at a slightly earlier timing), the sensor SW1 is switched from the off state to the on state. . Therefore, even if the connection of the sensor SW2 is on the contact b side, the relay Ry is maintained in the excited state,
The driving of the electric motor 21 is not stopped.

When the rotating body 19 is rotated, the drive cam 13 is rotated from the neutral position in the clockwise direction in FIG. 4 through the link 20 to come into contact with the pin 23, and the first ratchet 9 is supported. It is rotated clockwise about the shaft 10. Then, when the rotating body 19 rotates to a position where the rotation angle θr (= about 310 °) as shown in FIG. 5, the first ratchet 9 comes off from the locking surface 5b. As a result, when the first ratchet 9 is disengaged from the locking surface 5b, the latch 5 is rotated clockwise in FIG. 6 around the support shaft 6 by the biasing force of the torsion spring 7 to the unlocked position shown in FIG. It returns to its original position, and its position is regulated while being in contact with the stopper 8. Thus, the striker 3 is released from the restraint by the concave portion 5a of the latch 5, and the side door 2
Is unlocked. The sensor SWR switches from the on state to the off state when the lock by the first ratchet 9 is released.

After the latch 5 has returned to the unlocked position, the rotating body 19 continues to rotate until the detected part 26 comes into contact with the sensor SW1, that is, the rotation angle θ = 360 °.
(That is, 0 °). When the detected portion 26 contacts the sensor SW1 and the sensor SW1 is turned off,
In FIG. 7, when the current stops flowing through the relay Ry (non-excitation state), the C contact of the relay Ry is connected to the B contact, and the driving of the electric motor 21 is stopped. Thus, the rotating body 19 makes one rotation from the initial position (θ = 0 °) and returns to the initial position again. Hereinafter, each time the opening / closing operation of the side door 2 is repeated, the rotating body 19 rotates in a fixed direction, and is rotated once every time the side door 2 is opened / closed.

When the driving of the electric motor 21 is stopped, the C contact of the relay Ry is connected to the B contact, and the electric motor 21 is short-circuited between its positive and negative terminals. When a back electromotive force is induced in the winding, a braking force acts, and the electric motor 21 stops immediately. As a result, the rotating body 19 stops at the home position and the initial position with high positional accuracy.

According to the present embodiment, as described in detail above, the following effects can be obtained. (A) Since the drive cam 13 and the latch 5 are coaxially rotatable by the common support shaft 6, the drive cam 13 and the latch 5 are compactly arranged with their respective surfaces superposed. Can be. Therefore, the door closer device 1 can be further reduced in size as compared with a conventional device in which the respective surfaces of the latch 83 and the rotating plate 88 are orthogonal to each other as described in the related art.

(B) The circular motion of the rotating body 19 which rotates in one direction via the link 20 and the drive cam 13 causes the pushing motion of the second ratchet 14 and the first ratchet 9
And a conversion to release movement. Therefore, it is possible to use a normal electric motor 21 dedicated to one-way rotation, which is smaller than a conventionally used reversible motor, and it is possible to further reduce the size of the door closer device 1.

(C) The detector for determining the drive control timing of the electric motor 21 is to detect two positions, the initial position of the rotating body 19 corresponding to the neutral position of the drive cam 13 and the home position. Sensors SW1, SW
2 and a sensor SWR for detecting that the latch 5 is at the half latch position or the full latch position.
Could have only three sensors. On the other hand, in the door lock device using the reversible motor described in the related art, there are a total of four sensors for detecting the half latch position, the full latch position and the neutral position of the latch, and the sensor for detecting the pole open. Was required. Therefore, according to the door closer device 1, in addition to not using a reversible motor, the number of detectors can be reduced, so that the control is not so complicated as in the conventional control device, and the control circuit 27 is not required. A relatively simple configuration can be provided.

(D) Since the power is transmitted between the rotating body 19 and the driving cam 13 via the link 20, the link 2
By setting the length to 0, the actuator 17 can be disposed at a position away from the latch 5. Therefore, even when the installation space of the door closer device 1 is limited, the actuator 17 can be arranged at a relatively free position with respect to the arrangement position of the latch 5, the driving cam 13, and the like. It is easy to secure the degree.

(E) When the driving of the electric motor 21 is stopped, the contact of the relay Ry is connected to the B contact to short-circuit both terminals of the electric motor 21. Occasionally, a counter-electromotive current due to inertial rotation is induced in the rotor. Therefore, the electric motor 21 is subjected to power generation braking, and the rotating body 19 can be accurately positioned. Therefore, the sensors SW1 and S1 due to the low accuracy of the stop position of the rotating body 19
A detection error of W2 can be avoided almost certainly, and an operation error of the door closer device 1 can be reliably prevented.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 10 shows a trunk closer device 31 as a locking / unlocking device provided in a trunk of an automobile. The trunk closer device 31 has substantially the same basic structure as the door closer device 1 of the first embodiment. Trunk closer device 31 because of the equipment installed in the trunk
Since the accommodation space of the side door 2 cannot be sufficiently secured as compared with the side door 2, the lock mechanism including the latch and the first ratchet is integrated. The control circuit 27 controls the first
In this embodiment, a common circuit is used.

As shown in FIG. 10, at the center of the rear end of the trunk 32 as a door, a striker 3 as a locking portion is provided.
3a in which an insertion passage 34 into which the third member 3 is inserted is formed.
Are formed to extend. An insertion passage 34 is provided in the support portion 32a.
A latch 35 is rotatably provided around a support shaft 36 at a position in the vicinity of, and the latch 35 is urged clockwise in FIG. FIG.
The position where the position of the striker 33 is restricted by contacting the stopper 38 as shown by 0 is the unlock position of the latch 35 where the striker 33 is released from the restraint by the latch 35.

As shown in FIGS. 17 (a) and 17 (b), the latch 35 is formed in a two-stage structure having a stepped cross section and a thicker portion near the center. Have. The latch 5 has a concave portion 35 a for restraining the striker 33, and a locking surface 35 of the full latch on the lower outer peripheral surface.
b and a latching surface 35c of the half latch are formed,
An engagement groove 35d is formed on the outer peripheral surface on the upper side. Each of the locking surfaces 35b and 35c and the engagement groove 35d are located substantially on one side with respect to the rotation center supported by the support shaft 36 (approximately on the right side of the support shaft 36 in FIG. 10). That is,
As shown in FIG. 16 and the like, a first ratchet 39 as a locking means and a second ratchet 40 as a retracting means abut (engage) with the latch 35 on different outer peripheral surfaces.
By doing so, the interference between the ratchets 39 and 40 is not taken into account, and the ratchets 39 and 40 are connected to the support portion 32 having a relatively limited space.
a so that they can be collected at positions close to each other.

As shown in FIG. 10, the first ratchet 39
Is a spring 41 in a direction approaching the outer peripheral surface of the latch 35.
In a state of being urged by the, it is provided rotatable about the support shaft 42. When the first ratchet 39 engages with the locking surface 35b, the position of the latch 35 is restricted to the full latch position, and when the first ratchet 39 engages with the locking surface 35c, the position of the latch 35 is restricted to the half-latch position. It has become so. The position of the first ratchet 39 is regulated by the regulating pin 43 in the biasing direction.

A substantially C-shaped drive cam 44 serving as a cam is provided so as to be rotatable about the support shaft 36, sharing the latch 35 and the support shaft 36. A first end of a substantially S-shaped link 45 is rotatably connected to the back surface of the end of the driving cam 44 opposite to the portion supported by the support shaft 36, and the link 4.
The second end portion 5 is rotatably connected at a position eccentric to the surface of a rotating body 46 fixed to the output shaft 18 of the actuator 17 so as to be integrally rotatable. The same actuator as that of the first embodiment is used for the actuator 17, and an electric motor 21 dedicated to one-way rotation drive is used as a power source.
Is provided.

The second ratchet 40 is disposed at substantially the same height as the link 45 on the back side of the drive cam 44.
The drive cam 44 is connected to the drive cam 44 so as to be rotatable about a support shaft 47. A spring 48 is stretched between the second ratchet 40 and the driving cam 44 so that the second ratchet 40 abuts on the latch 35 against the outer peripheral surface on the upper side where the engagement groove 35d is formed. Being energized. When the first ratchet 39 is engaged with the locking surface 35c, the second ratchet 40 is engaged with the engagement groove 35d. From this state, the drive cam 44 is moved to the neutral position shown in FIG. In the counterclockwise direction in FIG.
, The latch 35 locked via the second ratchet 40 and the engagement groove 35d is forcibly rotated together with the drive cam 44 in the counterclockwise direction in FIG. It has become.

Further, when the drive cam 44 is rotated clockwise in FIG. 13 from the neutral position shown in FIG. 13 around the support shaft 36, the pin 49 protrudes from the upper surface of the first ratchet 39. The first ratchet 39 is brought into contact with the locking surface 35
b. When the link 45 is arranged at a position where the first ratchet 39 is disengaged from the locking surface 35b, the side of the link 45 presses the base end of the second ratchet 40, and the second ratchet 4
0 is rotated in a direction away from the outer peripheral surface of the latch 35.

On the outer peripheral surface of the rotating body 46, the detected parts 50, 5
1 is formed so as to sandwich the connecting portion of the second end of the link 45 in the middle with a central angle of about 100 °, for example. When the rotating body 46 is at the initial position shown in FIG. 10, the sensors (microswitches) SW1 and SW2 are arranged at positions where they can come into contact with the detected parts 50 and 51, respectively. Further, a sensor SWR for detecting whether or not the first ratchet 39 is engaged with each of the locking surfaces 35b, 35c is arranged at a position adjacent to the first ratchet 39.

As in the case of the first embodiment, each of the sensors SW1 and SWR is turned off when its detecting portion comes into contact with the detected portions 50 and 51.
W2 is connected to the "a contact" when the detecting portion contacts the detected portions 50 and 51, and is connected to the "b contact" when the detecting portion does not contact the detected portions 50 and 51. I have.

The trunk closer device 31 operates as follows. When the trunk 32 is open, FIG.
As shown in FIG. 7, the latch 35 is at the lock release position where it comes into contact with the stopper 38, and the rotating body 46 is at the initial position (rotation angle θ = 0 °). As shown in FIG. 11, when the trunk is closed and the door is in a half-door state, the first ratchet 39 is engaged with the locking surface 35c, the position of the latch 35 is regulated to the half-latch position, and the second ratchet 40 is moved. It engages with the engagement groove 35d. At this time, the first ratchet 39 is in a non-contact state with the detection unit of the sensor SWR.
R turns "on".

Then, the driving of the electric motor 21 is started, and the rotating body 46 is shifted from the initial position (θ = 0 °) to the state shown in FIG.
1 starts to rotate in a counterclockwise direction in a fixed direction, and the driving cam 4 connected via a link 45 with this rotation.
4 also rotates counterclockwise. As a result, the second ratchet 40 engaged with the engagement groove 35d pushes the latch 35 in the counterclockwise direction.
Is forcibly rotated from the half latch position to the full latch position. At this time, the striker 33 inserted into the recess 35a
Is pulled in the depth direction of the insertion passage 34, and the trunk 32 is completely closed by the full latch.

The rotating body 46 further continues to rotate, and after the rotation angle θ exceeds the vicinity of θf, the driving cam 44 returns clockwise and when the driving cam 44 reaches the neutral position, the driving cam 44 returns to the position shown in FIG. As shown in FIG.
1 comes into contact with the respective detecting portions of both sensors SW1 and SW2, and the driving of the electric motor 21 is stopped. Thus, the rotating body 46 stops at the home position.

When the opener provided in the room is operated to open the trunk 32, the switch S
W0 (see FIG. 7) is turned on, and the driving of the electric motor 21 is started. As a result, the rotating body 46 starts to rotate in the counterclockwise direction in the same direction from the home position shown in FIG. 13 in a certain direction, and the driving cam 44 connected via the link 45 rotates in the clockwise direction with this rotation. Start turning. The drive cam 44 abuts on a pin 49 protruding from the first ratchet 39 during this rotation, and presses the pin 49 to move the first ratchet 39 in the release direction.

When the rotating body 46 rotates to the vicinity of the rotation angle θr (= approximately 310 °) shown in FIG. 14, the first ratchet 39 is disengaged from the locking surface 35b, and as shown in FIG. Stopper 3 by urging force of 37
8 and rotates clockwise in FIG. At this time, before the return of the rotation of the latch 35, the link 45 presses the base end of the second ratchet 40 to rotate the second ratchet 40 clockwise in FIG. Therefore, the second ratchet 40 does not engage with the engagement groove 35d when the latch 35 returns to the rotation state.

Thus, the striker 33 is released from the restraint by the concave portion 35a of the latch 35, and the trunk 32 is unlocked. Then, when the rotating body 46 rotates until the detected part 51 contacts the detecting part of the sensor SW1, the driving of the electric motor 21 is stopped, and the rotating body 46 stops at the initial position.

According to the present embodiment, as described in detail above, the following effects can be obtained. (A) The latch 35 has a two-stage structure having two outer peripheral surfaces, and each of the locking surfaces 35 and 35c and the engaging groove 35d are formed on different outer peripheral surfaces, and these are formed closer to one side of the latch 35. Therefore, the ratchets 39 and 40 can be collectively arranged without considering mutual interference, and even when the accommodation space for the trunk closer 31 is relatively small like the trunk 32, the trunk closer 31 can be installed. It can be stored compactly in a limited storage space.

(B) Lower stage upper surface of latch 35 and drive cam 4
Since the second ratchet 40 and the link 45 are arranged in the gap sandwiched between the second ratchet 40 and the second ratchet 4, the necessary accommodation space can be reduced from this point as well.

(C) When releasing the lock, the second ratchet 4
Since the mechanism for retracting the second ratchet 40 so as not to engage with the engagement groove 35d is a mechanism for pressing the base end of the second ratchet 40 with the side surface of the link 45, the engagement groove of the second ratchet 40 when unlocking is performed. Engagement with 35d can be reliably prevented.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. This embodiment is a modification of the control circuit in each of the above embodiments, and is used for the door closer 1 or the trunk closer 31. Therefore, only a control circuit having a different configuration from the above embodiments will be described.

As shown in FIG. 18, in the control circuit 55, the plus terminal of the electric motor 21 is connected to a battery (not shown), and a battery voltage "+ B" is applied.
The negative terminal of the electric motor 21 is grounded via the sensor SW1, and is connected to the contact c of the sensor SW2. The terminal a of the sensor SW2 is grounded via a switch SW0 which is turned on when an opener (not shown) is operated, and the terminal b is grounded via a sensor SWR.

Next, the operation of the control circuit 55 will be described. Note that the operation by the control circuit 55 is basically the same regardless of whether the door closer device 1 or the trunk closer device 31 is employed, and therefore the door closer device 1 will be described here as an example.

As shown in FIGS. 18 and 19, when the side door 2 is open (rotation angle θ = 0 °), the sensor SW
R and SW1 are turned off, and the contact c of sensor SW2 is set to "b".
Contact ". Next, when the side door 2 is closed and a half door (half latch) state is established, the sensor SWR is turned “ON” and the electric motor 21 is driven.
When the rotating body 19 starts to rotate from the initial position (rotation angle θ = 0 °), the sensor SW1 is turned “on”, so that the first ratchet 9 is disengaged from the locking surface 5c and the sensor SWR is once turned “off”. Also, the driving of the electric motor 21 is not stopped.

When the rotating body 19 reaches the rotation angle θf (about 130 °), the first ratchet 9 is engaged with the locking surface 5b, and the position of the latch 5 is restricted to the full latch position. On. " When the rotating body 19 has almost reached the home position (rotation angle θ = about 260 °), the connection of the terminal c of the sensor SW2 is changed to the “terminal b”.
To the “a terminal”, the sensor SW1 is turned “off” with a slight delay in timing, and the driving of the electric motor 21 is stopped. When the side door 2 is locked (fully latched), the switches SW1, SW2, and SWR are held in this state.

Next, when the side door 2 is opened, the opener is first operated to turn on the switch SW0. Since the contact c of the sensor SW2 is connected to the contact a, the electric motor 21 is driven. When the rotator 19 starts rotating from the home position (rotation angle θ = about 260 °), first, the sensor SW1 is turned “ON”, and the connection of the c contact of the sensor SW2 is slightly delayed with respect to the timing.
To “b terminal”. The driving of the electric motor 21 is not stopped because the sensor SW1 is turned “ON” earlier in timing. When the rotating body 19 reaches the rotation angle θr, the first ratchet 9 comes off the locking surface 5b, and the cam 5
Is returned to the unlock position, and the striker 3 is released. The sensor SWR is turned off when the first ratchet 9 comes off. When the rotating body 19 returns to the initial position (θ = 360 °), the sensor SW1 is turned “OFF”.
Then, the driving of the electric motor 21 is stopped.

As described in detail above, according to the third embodiment, although the braking force of the electric motor 21 cannot be obtained, the control circuit 55 having a simpler circuit configuration than the above embodiments is provided. be able to.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described. This embodiment is an example in which the power transmission mechanism for converting the circular motion of the rotating body 19 into the swing motion of the drive cam in the first embodiment is modified. The description of the same components as those in the first embodiment will be omitted, and only different components will be described.

As shown in FIG. 20, the driving cam 60 as a cam is disposed on the back side of the latch 5 (on the back side of the paper in FIG. 20), and is rotatable around a support shaft 6 common to the latch 5. Is provided. In the drive cam 60, a slot 61 serving as a power transmission mechanism and serving as a guide is formed in another extension 60b other than the extension 60a provided with the second ratchet 14.

The surface of the rotating body 62 fixed to the output shaft 18 of the actuator 17 (on the front side in the drawing) has a diameter slightly smaller than the width of the elongated hole 61 at a position eccentric from the center of rotation. A power transmission mechanism is formed, and a columnar guide pin 63 as an engagement portion is vertically protruded, and the guide pin 63 is in a state of being inserted into the elongated hole 61. Due to the circular motion of the guide pin 63 (circular locus K in FIG. 21), the drive cam 60 swings through a long hole 61 in a predetermined swing range. Although not shown, the first ratchet 9 is arranged at a height at which the first ratchet 9 can be engaged with the outer peripheral surface of the latch 5, and the pin 23 projects from the lower surface thereof so as to be able to engage with the drive cam 60.

The position of the rotating body 62 where the guide pin 63 is arranged at the position shown in FIG. 20 is the initial position where the drive cam 60 is arranged at the neutral position, and the guide pin 63 is arranged at the position shown by the chain line in FIG. Then, the position of the rotating body 62 when the drive cam 60 is again placed at the neutral position becomes the home position position. The sensors SW1 and SW2 are connected to the detected portions 25 and 26 (both not shown in FIGS. 20 and 21) protruding from the outer peripheral surface of the rotating body 62, respectively. The position is set so as to satisfy a predetermined detection state as shown in FIG.

When the side door 2 is open, the rotating body 6
2 is a state where the guide pin 63 is located at the position shown by the solid line in FIG. When the side door 2 is closed and enters the half-door state, the electric motor 21 is driven, and the rotating body 62 starts to rotate in the counterclockwise direction in FIG. 20, and the guide pin 63 starts circular movement with this rotation. Then, the drive cam 60 guided by the guide pin 63 through the elongated hole 61 rotates counterclockwise from the neutral position. As a result, when the latch 5 is forcibly rotated from the half-latch position to the full-latch position through the engagement between the second ratchet 14 and the engagement groove 5d, and the drive cam 60 is rotated to the position shown by the chain line in FIG. First
The ratchet 9 is engaged at the locking surface 5b, and the position of the latch 5 is restricted to the full latch position. Thus, the side door 2 is completely locked (fully latched). Thereafter, when the drive cam 60 returns to the neutral position shown in FIG. 20, the drive of the electric motor 21 is stopped.

Next, when the opener is operated to open the side door 2, the driving of the electric motor 21 is started, and
The rotating body 19 rotates counterclockwise from the home position position (the state in which the guide pin 63 is disposed at the position shown by the chain line in FIG. 20), and the drive cam 60 rotates clockwise from the neutral position. . Then, the driving cam 60 is
When the first ratchet 9 is rotated to push back the first ratchet 9 and is rotated to a position shown by a solid line in FIG.
The locking of the locking surface 5b by the ratchet 9 is released. In this way, the latch 5 is pivotally returned in the biasing direction, and the striker 3 is released from the restraint by the latch 5. Thereafter, when the rotating body 62 returns to the initial position, the driving of the electric motor 21 is stopped.

As described in detail above, according to this embodiment, the following effects can be obtained. (A) A rotating body 62 is inserted into a long hole 61 formed in the driving cam 60.
The rotational motion of the rotating body 62 is converted into the oscillating motion of the drive cam 60 by inserting a guide pin 63 eccentrically projecting from the surface of the drive cam 60. Therefore, the link 20 used in the first embodiment can be eliminated, and the connecting structure between the rotating body 62 and the driving cam 60 can be made simpler. As a result, the number of parts can be relatively reduced by deleting the link 20 and the connection shaft thereof, and the assembling work can be simplified.

(B) Since the rotating body 62 and the drive cam 60 are substantially directly connected via the guide pins 63, the latch device including the latch 5 and the like and the actuator 17 are different from those of the first embodiment. Can also be arranged collectively in a close position.

(Fifth Embodiment) Next, a fifth embodiment of the present invention will be described with reference to FIGS. This embodiment embodies the eighth and ninth aspects, and has a feature that the door is properly opened and closed even when the operation of the electric motor is abnormal.

FIG. 22 is a plan view showing the entire structure of the door closer device 101, and FIG.
FIG. 24 is an exploded plan view showing each member of FIG.
FIG. 4 is a side view of the door closer device 101 in FIG. In FIG. 23, the assembly action line (dashed-dotted line) is drawn out for the part where the members are assembled to each other.

Here, the door closer device 101 is incorporated in a door 102 as a door body at a portion facing the striker 103 provided on the vehicle body side, and when the door 102 is in a half door (half latch) state, The striker 103 as the stop is forcibly pulled into the full latch state, and the door 2 is automatically completely closed.

As shown in FIGS. 22 to 24, a substantially disk-shaped latch 105 is provided near the shaft 104 near the insertion passage 104 into which the striker 103 is inserted.
6, and is urged in a clockwise direction in the figure by a torsion spring (not shown). The support shaft 106 is fixedly supported on the door 102 side. The position of the latch 105 is regulated by the stopper 107 in the biasing direction. When the position of the latch 105 is restricted by contacting the stopper 107 as shown in FIG. 22, the striker 103 is released from the restraint by the latch 105. The latch 105 is in the unlocked position.

The latch 105 is formed in a two-stage structure in which the cross section is stepped and the center is thicker.
It has two outer peripheral surfaces on the upper side and the lower side.
A striker 103 is provided on the outer peripheral surface on the lower side of the latch 105.
105a, a locking surface 105b, which is locked at the full latch position, and a locking surface 105c, which is locked at the half latch position. 105d are formed. At this time, each of the locking surfaces 105b and 105c and the engagement groove 105d are located substantially on one side (substantially on the right side of the support shaft 106 in FIG. 22) with respect to the center of rotation supported by the support shaft 106. .

The first ratchet 1 as a locking member
Reference numeral 08 is urged by a spring (not shown) in a direction approaching the outer peripheral surface of the latch 105, and is provided so as to be rotatable around the support shaft 116 in this state. Support shaft 116
Are fixed to the door 102 as shown in FIG.
In such a case, the latch surface 108a of the first ratchet 108
Engages with the locking surface 105c to restrict the latch 105 to the half-latch position, and engages the latch surface 108a with the locking surface 105b to restrict the latch 105 to the full latch position. .

A drive cam 111 sharing the support shaft 106 with the latch 105 is disposed on the upper surface side (the front side in FIG. 22) of the latch 105.
06 is rotatable. This drive cam 11
1, a first end of a linear link 112 is rotatably connected to a side opposite to a part supported by the support shaft 106, and a second end of the link 112 is connected to an electric motor M (see FIG. (Not shown in FIGS. 22 to 24) is rotatably connected to a position near an outer peripheral portion of a rotating body 114 fixed to the output shaft 113 so as to be integrally rotatable. Note that the link 112 constitutes a power transmission mechanism, and the shape thereof is not necessarily linear, but may be, for example, a curved shape as long as it can transmit the rotation of the rotating body 114 to the drive cam 111. May be changed arbitrarily. Here, the position of the drive cam 111 shown in FIG.
1 is swingable on the left and right sides with respect to the neutral position.

The electric motor M (shown in FIG. 31 described later)
This is a power source of the door closer apparatus 101, and is basically in one direction (in this embodiment, the counterclockwise direction in FIG. 22).
Can be driven to rotate. In the present embodiment, a small motor driven at high speed is used.
It is drivingly connected to an output shaft 113 via a speed reduction mechanism (not shown) so that an output of a required rotation speed can be obtained. That is, the output of the electric motor M is decelerated via the speed reduction mechanism and is taken out from the output shaft 113 as a predetermined rotation speed.

The second ratchet 109 has a drive cam 111
Of the latch 105 is disposed at substantially the same height as the upper side of the latch 105.
Are connected so as to be rotatable around the center. 2nd ratchet 1
A spring (not shown) is stretched between the driving cam 111 and the driving cam 111.
5 is urged so as to come into contact with the outer peripheral surface on the upper side where the engagement groove 105d is formed. 2nd ratchet 10
A pin 109a is provided upright at a free end side of the pin 9a.

When the first ratchet 108 is engaged with the engaging surface 105c, the second ratchet 109 is engaged with the engaging groove 105d. 22, the latch 105 locked via the second ratchet 109 and the engagement groove 105d is forcibly forced in the counterclockwise direction in FIG. And is integrally rotated.

A fork 115 as a swing member is disposed between the driving cam 111 and the second ratchet 109, and is supported coaxially with the first ratchet 108 by the support shaft 116. One end of a rod 117 is movably attached to a long hole 115b formed on the top of the fork 115.
The door handle 118 which is manually operated to open the door is connected. Therefore, when the rod 117 is pulled rightward in the drawing by operating the door handle 118, the fork 11
Numeral 5 rotates counterclockwise in FIG. In addition, the fork 115 shown in FIG. 22 has shown the stop position in the door open state. At this time, fork 1
The rotation position of the counterclockwise direction 15 is regulated by a stopper 1108. The fork 115 has a guide groove 115a for guiding the pin 109a of the second ratchet 109.

The fork 115 has a drive cam 1
A pin 115c that can be engaged with the outer peripheral surface of the fork 115 protrudes from the outer peripheral surface of the fork 115.
Is protruding. Therefore, the driving cam 111 is
By rotating clockwise in FIG.
Its outer peripheral surface is engaged with the pin 115c of the fork 115. At this time, the fork 115 rotates clockwise around the support shaft 116, and a pin 115c formed on the fork 115 engages with a pin 108b of the first ratchet 108, thereby causing the first ratchet 108 to rotate. 108 also rotates clockwise. By this series of operations, the first ratchet 108 at the full latch position is pushed back so as to be disengaged from the locking surface 105b of the latch 105, and the door 10
2 can be opened.

Here, the position of the rotating body 114 shown in FIG. 22 is the initial position, and when the door 102 is opened, the rotating body 114 is always located at the initial position. FIG.
Is the home position, and when the door 102 is completely closed (fully latched), the rotator 114 is always located at the home position. In a state where the rotating body 114 is arranged at these two positions, the driving cam 111 is arranged at the neutral position.

When the rotating body 114 is rotated counterclockwise from the initial position to the home position while the latch 105 is at the half latch position shown in FIG. 25, the driving cam 111 is moved from the neutral position as shown in FIG. It reciprocates once on the left side and returns to the original neutral position. The swinging process (swinging range) of the drive cam 111 is a first swinging range.
Second ratchet 10 engaged with the engagement groove 105d of
9 is pushed to the left in FIG.
5 is forcibly rotated from a half latch position to a full latch position.

When the rotating body 114 is rotated counterclockwise from the home position to the initial position in a state where the latch 105 is at the full latch position shown in FIG. 27, the driving cam 111 is moved from the neutral position in FIG. Is reciprocated on the right side of the vehicle to return to the original neutral position. The swinging process (swinging range) of the driving cam 111 is a second swinging range.
The outer peripheral surface of the fork 115 engages with the pin 115c of the fork 115, and swings the fork 115 about the support shaft. Further, the outer peripheral surface of the fork 115 engages with the pin 108a of the first ratchet 108 which constitutes the unlocking means, and pushes the first ratchet 108 away from the latch 105 against the urging force thereof, so that the full latch position is reached. (Or half latch position), the latch by the first ratchet 108 that restricts the latch 105 is released.

On the other hand, as another means for releasing the latch by the first ratchet 108 which restricts the latch 105 to the full latch position (or the half latch position), the fork 115 is forcibly operated by operating the door handle 118. Swinging motion is also possible. Even in such a case, the outer peripheral surface of the fork 115 engages with the pin 108a of the first ratchet 108, and pushes the first ratchet 108 away from the latch 105 to release the full latch (or half latch). .

When the drive cam 111 pushes back the first ratchet 108 via the fork 115, the pin 109a of the second ratchet 109
15a, when the latch of the latch 105 by the first ratchet 108 is released, as shown in FIGS.
Are arranged so as to be separated from the outer peripheral surface. Therefore, the latch 10 by the first ratchet 108
When the latch 105 is released and the latch 105 returns to the unlocked position by the urging force, the second ratchet 1
09 do not engage with the engagement groove 105d.

As shown in FIG. 30, two detected parts 119 and 120 are provided on the outer peripheral surface of the rotating body 114 so as to project from the home position. The position is set so as to form a central angle equal to the rotation angle at which it rotates to the position. Incidentally, in this configuration, the second end (for example, the upper end in FIG. 22) of the link 112 is connected to the vicinity of the position where the one detected part 120 is provided.

When the rotating body 114 is at the home position, the sensor (micro switch) SW11 as the second detector and the sensor (microswitch) SW11 as the third detector are located at positions where they can come into contact with the detected parts 119 and 120, respectively. A sensor (micro switch) SW12 is provided. Further, the first ratchet 108 is connected to each of the locking surfaces 105b and 105.
A sensor (micro switch) SWR as a first detector for detecting whether or not it is engaged with c is provided on the back side of the first ratchet 108.

Sensors SW11, SW12 and SWR are shown in FIG.
0 and as shown in FIG.
Here, FIG. 30A shows the stop position of the rotating body 114 when the door 2 is opened, that is, at the initial position.
(B) shows the stop position of the rotating body 114 when the door 2 is closed, that is, at the home position. Also,
FIG. 31 shows a control circuit for controlling the drive of the electric motor M, and each sensor is shown in a state where the door is opened.

That is, FIGS. 30A and 30B and FIG.
As shown in the figure, the sensor SW11 is connected to the “a contact” when the detection part is in contact with the detected parts 119 and 120, and is connected to the “b contact” when the detection part is not in contact with the detected parts 119 and 120. Connected. The sensor SW12 is connected to the “a contact” when the detection unit is in contact with the detected parts 119 and 120, and is connected to the “b contact” when the detection unit is not in contact with the detected parts 119 and 120. It has become. As shown in FIG. 30 (c), the sensor SWR is connected to the “b contact” when its detection unit is in contact with the first ratchet 108, and is “a contact” when it is not in contact with the first ratchet 108. Is to be connected to.

In FIG. 31, the battery voltage "+
"B" indicates a contact b of the sensor SW11, a contact a of the sensor SWR, an A contact of the first relay Ry11, and a second relay Ry1.
2 are connected to the A contact. First and second relays Ry
Normally, the B contact and the C contact are connected to each other, and when the relays Ry11 and Ry12 are turned on, the A contact and the C contact are connected.
The respective C contacts of the first and second relays Ry11 and Ry12 are connected to both positive and negative terminals of the electric motor M. In this case, the second relay Ry is connected from the C contact of the first relay Ry11.
The electric motor M is driven to rotate forward when a current flows through the C contact of No. 12, and when the current flows from the C contact of the second relay Ry12 to the C contact of the first relay Ry11, the electric motor M is driven to rotate in the reverse direction. I have. A P as a protection circuit is provided between the B contacts of the first and second relays Ry11 and Ry12.
TC (positive temperature coefficient thermisto
r) 121 is provided.

The contact a of the sensor SW11 is connected to the battery voltage + B via the courtesy lamp 122, and the contact c of the sensor SW11 is connected to the contact c of the sensor SW12 and the first and second relays Ry11 and Ry12. ing. The contact a of the sensor SW12 is connected to the contact c of the sensor SWR, and the contact b of the sensor SWR is connected to switches SW0 and SWK for turning on / off conduction with the battery voltage + B. Here, the switch SW0 is turned on when the door is opened by operating the opener, and the switch SWK is turned on when the key switch 123 is unlocked. The contact b of the sensor SWR is grounded.

The base of the transistor Tr is connected to the first relay Ry11 via the resistor R1 and the Zener diode Dz. A second relay Ry12 is connected to the collector of the transistor Tr, and a capacitor C1 and a resistor R2 are connected in parallel between the base and the emitter of the transistor Tr.

Next, the operation of the door closer apparatus 101 configured as described above will be described with reference to the timing chart of FIG. First, the operation of the door closer apparatus 101 when the door 102 is shifted from the open state to the closed state will be described. When the door 102 is open, the rotating body 114 is located at an initial position shown in FIG. At this time, each of the sensors SW11 and SW12 is in a state where each of the detecting portions is in contact with the detected portions 119 and 120 and is connected to the “a contact” (the state of FIG. 30A), and the sensor SWR is in the first position. Since one ratchet 108 is not engaged with any of the locking surfaces 105b and 105c, it is in a state of being connected to the "b contact" (the state of FIG. 30 (c)). In such a case, FIG.
As shown in the circuit diagram of FIG.
The connection of the c and a contacts of the SW 12 and the c and b contacts of the SWR causes the battery voltage + B to change to the courtesy lamp 12.
2 and the lamp 122 is turned on.

For example, if a sufficient force is not applied when closing the door 102 and the latch 105 pushed by the striker 103 inserted into the insertion passage 104 is rotated only up to the half-latch position, the first ratchet 1
08 engages with the latch 105 at the locking surface 105c, and the position of the latch 105 is regulated to the half-latch position shown in FIG. That is, the door 102 is in a half-door state. In this state, the second ratchet 109 is engaged with the engagement groove 105d as shown in FIG. At this time, the first ratchet 108 engaged with the locking surface 105c
Will be displaced toward the latch 105, so that the sensor S
The connection of the WR switches from “b contact” to “a contact”.
Thus, the courtesy lamp 122 is turned off.

When the sensor SWR is connected to the "a contact", the a and c contacts of the sensor SWR and the sensor SW12 are connected.
The battery current flows through the first relay Ry11 by the respective connections of the contacts a and c, and the contact C of the first relay Ry11 is connected to the contact A. At this time, the PTC 121 maintains a steady state and allows a current flow. As a result, the electric motor M is energized in the normal rotation direction, and the rotating body 1
14 starts rotating counterclockwise from the state shown in FIG. When the rotating body 114 starts to rotate, the detection units of the sensors SW11 and SW12 are turned on by the detection unit 119,
120 and the sensors SW11 and SW12
Switches from the connection state with the “a contact” to the connection state with the “b contact”.

Then, as the rotating body 114 is rotated in one direction in the counterclockwise direction, the drive cam 111 is moved from the neutral position in FIG. Is rotated. As a result, the engagement groove 1
The second ratchet 109 engaged at 05d
5 is forcibly pushed to the left in the figure, and the latch 105 is rotated counterclockwise in the figure. When the first ratchet 108 comes off the locking surface 105c, the sensor SWR is temporarily connected to the “b contact” (not shown in the time chart of FIG. 32), but the sensor SW11 is already set to “b”. Since it is connected to the “contact”, the current flowing through the first relay Ry11 is not interrupted, and the driving of the electric motor M is not stopped.

When the rotating body 114 continues to rotate by the driving of the electric motor M, as shown in FIG.
The latch surface 108a of the ratchet 108 engages with the locking surface 105b of the latch 105,
Is restricted to the full latch position. At this time, the sensor SWR
Switches back to the connection state with the “b contact”.

The rotating body 114 continues to rotate further, and rotates until the detected part 120 comes into contact with the sensor SW11 (the state shown in FIGS. 27 and 30 (b)). When the state is switched from the connection state to the connection state with the “a contact”, no current flows through the first relay Ry11 (non-excitation state), the C contact is connected to the B contact, and the driving of the electric motor M is stopped. . Even when the door 102 is completely closed (full latch state) without being in the half-door state, the electric motor M is similarly driven and the rotating body 11
4 is also located at the home position. With the door 102 thus closed in the fully latched state,
The rotating body 114 is always at the home position.

Next, the operation for shifting the door 102 from the closed state to the open state will be described. In the state where the door 102 is locked as shown in FIG. 27, FIGS.
As shown in the figure, the sensor SW11 is connected to the “a contact”, the sensor SW12 is connected to the “b contact”, and the sensor SWR is connected to the “a contact”.

For example, when an opener (not shown) provided on the door 102 or a key switch 123 is operated,
The switch SW0 or SWK shown in FIG. 31 is turned on.
Then, since the sensor SW12 is connected to the “b contact”, a battery current flows through the first relay Ry11 (excitation state), and the C contact of the relay Ry11 is connected to the “A contact”, and the electric motor The driving of M is started. When the electric motor M is driven, the rotating body 114 starts rotating in the counterclockwise direction in FIG. When the rotating body 114 starts rotating, the connection of the sensor SW11 is switched from the contact a to the contact b.

When the rotating body 114 is rotated, the driving cam 111 is moved from the neutral position via the link 112 to the position shown in FIG.
7, the outer peripheral surface thereof contacts the pin 115c of the fork 115, and the fork 11
5 is rotated clockwise about the support shaft 116. When the fork 115 is rotated, as shown in FIG.
, And the first ratchet 108 is rotated clockwise about the support shaft 116.

When the driving cam 111, the fork 115 and the first ratchet 108 rotate integrally with the rotation of the rotating body 114, as shown in FIG.
The latch surface 108a of the first ratchet 108
5 comes off from the locking surface 105b. as a result,
When the latch between the first ratchet 108 and the latch 105 is released, the latch 105 rotates and returns clockwise in FIG. Contact position,
That is, it is regulated at the unlock position. Thus, the striker 103 is released from the restraint by the concave portion 105a of the latch 105, and the lock of the door 102 is released.

After the latch 105 has returned to the unlocked position, the rotating body 114 continues to rotate, and
9 and 120 rotate until they contact the detection units of the sensors SW11 and SW12. The detected parts 119 and 120 are sensors S
The sensor SW11,
When each of the switches SW12 shifts from the connection state with the “b contact” to the connection state with the “a contact”, no current flows to the first relay Ry11 in FIG. 31 (non-excited state), and the C contact of the first relay Ry11. Is connected to the contact B, and the drive of the electric motor M is stopped, and the courtesy lamp 122 is turned on again.Thus, the rotating body 114 makes one rotation from the initial position and returns to the initial position again. Thereafter, each time the opening / closing operation of the door 102 is repeated, the rotating body 114 rotates in a certain direction,
Is rotated once for each opening and closing of.

In the meantime, if the electric motor M is overloaded due to a foreign object being caught in the door 102 during the transition from the open state to the closed state of the door 102, the electric motor M PTC121 by current supply
Generates heat, and when the temperature reaches a predetermined temperature range (for example, 120 ° C. or higher), the resistance value of the PTC 121 sharply increases. When the PTC 121 is activated by the overcurrent, the transistor Tr is turned on, and a current flows through the second relay Ry12 instead of the first relay Ry11.
The connection of the second relay Ry12 switches from the B contact to the A contact. Thereby, the electric motor M is driven to rotate in the reverse direction, and the door 102 is forcibly returned to the open state once.

On the other hand, in the above-described electrically driven door closer device 101, for example, the electric motor M malfunctions when the door 102 is completely closed, that is, when the door closer device 101 is fully latched.
If the motor operation is hindered, the door 102 may not be able to open. When such an electric motor M malfunctions, as described below, the door closer 1
01 is manually operated.

That is, in the full latch state shown in FIG. 27, if the rotating body 114 cannot be rotated by the electric motor M, the driving cam 111 cannot rotate with the neutral position. In such a case, the rod 117 connected to the door handle 118 is pulled rightward in the drawing. Then, the fork 115 rotates clockwise in the figure around the support shaft 116, and its outer peripheral surface abuts on a pin 108b provided upright on the first ratchet 108. This fork 115
The first ratchet 108 rotates clockwise around the support shaft 116, that is, in the direction to release the lock between the latch 105 and the first ratchet 108, and the first ratchet 108 Is released.

Thus, the latch 105 and the first ratchet 1
When the latch with the lever 08 is released, the latch 105 is pivotally returned to the unlock position by the urging force of a twist spring (not shown), and the opening of the door 102 is permitted.

As described in detail above, according to the present embodiment, similar to the above-described first to fourth embodiments, the desired effects of the present invention can be obtained, and in addition to this, the following effects can be obtained. The following effects can be obtained.

(A) A fork 115 as a swinging member is provided, and can be driven by either the driving cam 111 or manually. Therefore, for example, even when the electric motor M malfunctions and the locked state between the latch 105 and the first ratchet 108 cannot be released by the motor M, the locked state is released by driving the fork 115. become able to. Therefore, it is possible to avoid a situation where the door 102 cannot be opened even at the time of the above-described trouble.

(B) In the present embodiment, the fork 115 is disposed so as to be rotatable around the same support shaft 116 as the first ratchet 108. Therefore, fork 115
Can be minimized even when the door closer apparatus 101 is additionally configured.

(C) Pin 109 of second ratchet 109
a is disposed in the guide groove 115a of the fork 115, and the free end of the second ratchet 109 is moved along the guide groove 115a. Therefore, when the full latch or the half latch is released, the second ratchet 1
09 does not interfere with the return rotation of the latch 105,
The operation of the latch 105 can be performed properly.

The present invention is not limited to the above embodiment, but may be embodied as follows without departing from the spirit of the invention. (1) Use a reversible motor that can rotate forward and backward as a drive source,
For example, a configuration is employed in which the output shaft of the reversible motor is directly connected to the rotation shaft of the cam, and the cam is rocked in the first and second rocking regions by forward and reverse rotation of the reversible motor. You can also. Even in this case, by arranging the cam and the latch such that their rotation axes are parallel (for example, so that each rotation axis is coaxial), the cam and the latch can be compactly laid out. This makes it possible to further reduce the size of the locking / unlocking device (such as a door closer device and a trunk closer device) as compared with the conventional device.

(2) In each of the above embodiments, the latch and the drive cam are coaxially arranged by the common support shaft. However, if the respective rotation axes are substantially parallel, they are coaxial. It is not limited to this.

(3) In each of the above embodiments, the rotation range for operating the retracting means is the rotation angle θ = 0 ° to about 260 °, and the rotation range for operating the unlocking means is the rotation angle θ.
= 260 ° to 360 °, but each rotation range can be set appropriately.

(4) In each of the above embodiments, the retracting operation of the first ratchet and the releasing operation of the second ratchet are performed by the swinging motion of one driving cam. By using two cams connected to each of the two links and individually driven, the retracting operation of the first ratchet and the releasing operation of the second ratchet are performed individually by the movement of the two cams. Is also good.

(5) In each of the above embodiments, an actuator having a speed reduction mechanism is used. However, a configuration in which a rotating body is directly connected to a drive shaft of an electric motor dedicated to one-way rotation drive may be adopted. If a low-speed electric motor is used, a desired operation speed can be secured.

(6) The rotating body is not limited to a disk-shaped one, and any structure that can take out a circular motion in one direction is sufficient.
For example, a rod-shaped member such as a crank connected to the output shaft may be used.

(7) Although the rotary motion of the rotating body is converted into the swinging motion of the drive cam, a power transmission mechanism such as a link or a guide pin is provided so that the drive cam rotates in one direction instead of swinging. It may be configured to be connected to the rotating body through the intermediary. In this case, for example, the rotation center of the drive cam is set to a position different from the rotation center of the latch. The following functions are performed during one rotation of the drive cam. First, when the drive cam starts to rotate from the initial position, the drive cam engages with the latch to rotate in a direction to forcibly push the latch, and when the cam rotates a predetermined angle, the engagement is released. Then, when the drive cam is further rotated, the drive cam is engaged with the first ratchet (or a pin provided on the first ratchet) and pushed away so as to retract the first ratchet. First
The engagement with the ratchet is released to complete one rotation. Also with this configuration, a motor driven in one direction can be used as a power source, so that the closer device can be downsized and the control circuit can be simplified.

(8) When the configuration in which the driving cam is rotated in one direction as in (7) is adopted, a configuration in which the driving cam is directly connected to the output shaft of the actuator or the driving shaft of the electric motor may be employed. it can. According to this configuration, the rotating body can be omitted, which contributes to a reduction in the number of parts. In addition, each of the sensors SW1, which have detected the rotational position of the rotating body,
If the SW2 is provided to detect a detected portion provided on the drive cam, for example, the drive control of the electric motor can be performed similarly.

(9) A pattern of a predetermined conductive portion is formed on the outer peripheral surface, the front surface, or the rear surface of the rotating body, and the contact is slid on the surface on which the conductive portion pattern is formed, so that the electric current between the contacts is controlled. The second and third detectors may be configured to detect the rotation angle of the rotating body by non-energization.

(10) The objects to be detected by the first and second detectors are not limited to rotating bodies. For example, the link 20 may be a detection target, and the initial position and the home position may be detected based on the attitude angle of the link 20.

(11) In the fourth embodiment, the guide portion which engages with the engagement pin and guides it is an elongated hole.
It may be an elongated recess. (12) Instead of the control circuit, drive control of the electric motor may be performed by microcomputer control such as an electronic control unit (ECU).

(13) In each of the above embodiments, the pin serving as the unlocking means may not have the columnar configuration as described above, and a part of the first ratchet may be bent by pressing. It may be one formed. In addition, the fifth
The same applies to the pin 115c provided on the fork 115 used in this embodiment, and a part of the fork 115 may be bent.

(14) In the configuration of FIG. 1 in the first embodiment or the configuration of FIG. 10 in the second embodiment, the swing member ( (Fork). In this case, the door can be opened and closed by manually operating the swing member even when the actuator is defective.

(15) In the fifth embodiment, the fork 115 as the swinging member and the first ratchet 108 as the locking member are coaxial, but are not necessarily limited to the same structure. Instead, both members may be supported by different support shafts.

(16) In the fifth embodiment, FIG.
2, a fork 115 driven by either the drive cam 111 or manually, and a door handle 118
Are directly connected by the rod 117, but a gear mechanism or a link device may be interposed between the two members to improve the operability at the time of manual operation.

(17) The locking and unlocking device of the present invention can be applied to doors other than side doors and trunks. For example, the present invention can be applied to a back door or a sunroof. That is, the present invention can be applied to any door that requires locking and unlocking in a vehicle.

The invention which has been grasped from the above embodiments and is not described in the claims will be described below together with its effects. (A) In the invention according to any one of claims 1 to 5, the retracting means includes a second locking means capable of locking with the cam, and the retracting means is operated by the unlocking means. A release mechanism is provided for releasing the second locking means so that the second locking means is not locked to the cam when the cam returns to the unlatched position due to the release of the locking means. According to this configuration, when the locking of the cam by the locking means is released by the operation of the locking releasing means and the latch returns to the latch release position, the second locking means constituting the retracting means engages the latch. Can be stopped.

(B) In the invention described in the above (a),
The release mechanism engages with the second locking means when the cam is rotated to a position for actuating the locking release means, and places the second locking means at a position where it cannot be engaged with the cam. It is provided with a regulating member for retreating. With this configuration, the same effect as the above (A) can be obtained.

(C) In the invention described in the above (a),
The release mechanism is configured such that when the cam is rotated to a position at which the lock release means is operated, a link constituting the link mechanism is engaged with the second lock means and cannot be engaged with the cam. It is a mechanism to retreat to a suitable position. With this configuration, the same effect as the above (A) can be obtained.

[0154]

As described above in detail, according to the first aspect of the present invention, the cam which is rotationally driven based on the driving force of the driving source to operate the retracting means and the unlocking means is provided. Since the cam and the latch are arranged so as to have a rotation axis parallel to the rotation axis, the cam and the latch can be compactly arranged in a state where their surfaces are parallel to each other, and the size of the locking / unlocking device can be reduced.

According to the second aspect of the present invention, the circular motion of one revolution by the rotating body is converted into the motion required for the cam via the power transmission mechanism and transmitted, and the retracting means and the unlocking means are operated. By using a relatively small drive source that is rotated only in a certain direction as a power source,
The size of the locking and unlocking device can be reduced, and the control thereof can be simplified.

According to the third aspect of the present invention, since the power transmission mechanism is a link mechanism, by setting the length of the link constituting the link mechanism, the degree of freedom of the layout of the drive source with respect to the latch, the cam and the like can be improved. Can be enhanced.

According to the fourth aspect of the present invention, the engagement portion of the rotator is engaged with the guide portion of the cam, and the cam is swung by the circular motion of the engagement portion based on the rotation of the rotator. Therefore, it is not necessary to use a link or the like that leads to an increase in the number of parts, and it is possible to reduce the size of the apparatus by consolidating the arrangement of the parts constituting the apparatus.

According to the fifth aspect of the present invention, the latch has a two-stage structure having two engaging surfaces in the thickness direction, and the engaging surfaces of the locking means and the retracting means are different from each other. The layout of the locking means and the retracting means can be determined without considering the interference between them, and the locking means and the retracting means can be collectively arranged to reduce the size of the apparatus.

According to the invention described in claim 6, since only three detectors are provided in addition to the operation detector for detecting that the operation unit for opening the door body has been operated, the control The circuit configuration of the circuit can be simplified.

According to the seventh aspect of the present invention, when the power supply to the electric motor is cut off, the control circuit is provided with a braking circuit having switch means for connecting both the positive and negative terminals of the electric motor so as to conduct. After the motor is de-energized, it can be stopped quickly by dynamic braking,
Position accuracy in controlling the electric motor can be improved.

According to the eighth aspect of the present invention, the door can be opened even when the driving source is malfunctioning and the locked state between the latch and the locking means cannot be released by the driving source. A situation that cannot be achieved can be avoided.

According to the ninth aspect of the present invention, since the swinging member is pivotally supported by the same rotation shaft as the locking means, the size of the locking and unlocking device can be increased even if the swinging member is additionally provided. Can be minimized.

[Brief description of the drawings]

FIG. 1 is a plan view showing a door closer device according to a first embodiment.

FIG. 2 is a plan view for explaining the operation of the door closer device.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of the same.

FIG. 5 is a plan view of the same.

FIG. 6 is a plan view of the same.

FIG. 7 is a circuit diagram of a control circuit.

FIG. 8 is a plan view for explaining the operation of various sensors.

FIG. 9 is a timing chart illustrating operation of a control circuit.

FIG. 10 is a plan view showing a trunk closer device according to a second embodiment.

FIG. 11 is a plan view for explaining the operation of the trunk closer device.

FIG. 12 is a plan view of the same.

FIG. 13 is a plan view of the same.

FIG. 14 is a plan view of the same.

FIG. 15 is a plan view of the same.

FIG. 16 is a side view as viewed in the direction X in FIG. 10;

17A is a side view of a latch, and FIG. 17B is a plan view of the latch.

FIG. 18 is a circuit diagram of a control circuit according to a third embodiment.

FIG. 19 is a timing chart illustrating operation of a control circuit.

FIG. 20 is a partial plan view of a door closer device according to a fourth embodiment.

FIG. 21 is a plan view for explaining the operation of the driving cam.

FIG. 22 is a plan view showing a door closer device according to a fifth embodiment.

FIG. 23 is a plan view showing components of the door closer device in an exploded manner.

FIG. 24 is a side view as viewed in the direction X in FIG. 22;

FIG. 25 is a plan view for explaining the operation of the door closer device.

FIG. 26 is a plan view of the same.

FIG. 27 is a plan view of the same.

FIG. 28 is a plan view of the same.

FIG. 29 is a plan view of the same.

FIG. 30 is a plan view for explaining the operation of various sensors.

FIG. 31 is a circuit diagram showing a configuration of a control system of the door closer device.

FIG. 32 is a timing chart illustrating the operation of the control system of the door closer device.

FIG. 33 is a side view of a conventional door closer device.

FIG. 34 is a plan view showing various states of the latch.

[Explanation of symbols]

1, 101: door closer as locking / unlocking device, 2
... side doors as door bodies, 3, 33, 103 ... strikers as locking portions, 5, 35, 105 ... latches, 9,
39, 108: first ratchet as locking means, 1
3, 44, 60, 111... Drive cam as cam, 1
4, 40, 109 ... second ratchet as a pull-in means,
20, 112: link as power transmission mechanism and link mechanism, 21: electric motor as drive source, 23, 108
b: Pins constituting unlocking means, 27, 55: control circuit, 19, 46, 62, 114: rotating body, 31: trunk closer as locking / unlocking device, 32: trunk as door, 61 ... A power transmission mechanism and a long hole as a guide portion; 63 a guide pin as a power transmission mechanism and an engagement portion; 102 a door; 115 a fork as a swinging member; 116 a rotary shaft Spindle,
SW1, SW11: Sensor as second detector, SW
2, SW12: a sensor as a third detector; SWR, a sensor as a first detector; SW0, SWK, a switch as an operation detector; Ry, a relay as switch means.

Claims (9)

[Claims] A direction in which the output shaft is disengaged from a driving source that is rotatable and can be engaged with a locking portion for locking the door in a closed state. A latch provided to be rotatable in a state where the latch is biased, a locking means for regulating the position of the latch between a half latch position and a full latch position, and rotating the latch from a half latch position to a full latch position. A latching means for releasing the locking by the locking means for restricting the position of the latch to the full latch position; and a rotation axis parallel to the rotation axis of the latch. And a cam for rotating the pull-in means and the lock releasing means, the cam being driven by the drive of the drive source to operate the retracting means and the unlocking means. 2. The driving source, wherein the output shaft is driven to rotate only in one direction, and the driving source includes a rotating body that makes a circular motion in one direction based on the driving of the driving source. A first swing range for activating the retracting means by the cam during one round of rotation thereof;
2. The door locking / unlocking device according to claim 1, further comprising a power transmission mechanism capable of converting the power into a second swing range for operating the lock release means and transmitting the power to the cam. 3. The door locking and unlocking device according to claim 2, wherein the power transmission mechanism is a link mechanism. 4. The power transmission mechanism is provided on an engaging portion provided at a position capable of circular movement on the rotating body, and is provided on the cam so as to engage with the engaging portion and to be guided by the engaging portion. The door locking / unlocking device according to claim 2, further comprising: 5. The latch according to claim 1, wherein an engaging surface with which said locking means engages and an engaging surface with which said retracting means engages are formed in a two-stage structure in a thickness direction. The door locking / unlocking device according to any one of claims 1 to 4. 6. A first detector for detecting that the latch is at a half-latch position, and for detecting that the rotating body is at a first position which is a starting point of a rotation range in which the retracting means is operated. A third detector for detecting that the rotating body is at a second position which is a start point of a rotation range in which the unlocking means is operated; and a third detector for opening the door body. An operation detector for detecting that the operation unit has been operated; and when the first detector detects that the latch is at the half-latch position, the rotating body is moved from the first position to the second position. When the operation detector detects that the operation unit has been operated, the circular motion is performed in the rotation range from the second position to the first position. , The drive source from each of the detectors The door locking / unlocking device according to any one of claims 2 to 5, further comprising: a control circuit that controls driving based on a signal. 7. The control circuit according to claim 1, wherein said drive source is an electric motor, and said control circuit is provided with a switch circuit for connecting said electric motor so as to make said positive and negative terminals conductive when said electric motor is turned off. The door locking / unlocking device according to claim 6, further comprising: 8. The apparatus according to claim 1, further comprising a swinging member driven by one of the cam and the manual, and operating the unlocking means in accordance with the driving. Item 12. The door locking and unlocking device according to Item 7. 9. The door locking / unlocking device according to claim 8, wherein the swing member is pivotally supported by the same rotation shaft as the locking means.