JP2957893B2 - Door lock device with automatic door closing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device with an automatic door closing mechanism which breaks a frozen portion of a frozen door to facilitate opening.

[0002]

2. Description of the Related Art Conventionally, in a cold region, moisture adhering between a vehicle door and a vehicle body during parking sometimes freezes and makes it impossible to open the door. Conventionally, there is a known door lock device with an automatic door closing mechanism in which when a vehicle door is closed to a half-latch state, the latch is forcibly rotated by the power of a motor to completely close the door (full latch). It is.

[0003]

As described above, in cold regions, water adhering between the vehicle door and the vehicle body freezes and may not be able to be opened. Once it freezes, it will melt it with hot water or pull the door with strong force, but it is difficult to get hot water on the go. In addition, when pulling the door, pull the handle by opening the outside door handle of the door.In this case, in the case of a swing type door whose front end side is hinged to the vehicle body with a hinge, the outside door is opened at the turning end side of the door. Since the handle is attached, it is possible for men to open the door with some difficulty, but for doors that slide in the front and rear direction on the side of the vehicle, the outer door handle is attached to the front end side of the door In many cases, it is difficult to transmit enough force to the door, and sometimes the door cannot be opened.

[0004]

Accordingly, the present invention relates to a latch 12 which engages with a striker 8 fixed to a vehicle body 1 to rotate from an open position to a full latch position via a half latch position, and to engage with the latch 12. The ratchet 1 for holding the engagement state between the latch 12 and the striker 8 in combination
4, an open lever 41 connected to an opening handle 42 of the vehicle door 3 to open the door by releasing the ratchet 14 from the latch 12 when rotated, and an open lever 41 connected to a key cylinder 44 of the vehicle door 3. A lock lever 43 that switches between an unlocked position that enables the door opening operation and a locked position that disables the door, and is connected in relation to the latch 12 to rotate the latch 12 toward the full latch position when rotated forward. A lock mounted on the vehicle door 3 and having a motor 29 and a controller 36 for rotating the motor 29 forward and rotating the latch 12 in the full latch direction when the latch 12 is moved from the open position to the half-latch position by the door closing operation. In the apparatus, the latch 12 is configured to be able to rotate excessively beyond the full latch position, The controller 36 is operated by a manual operation to rotate the motor 29 in the normal direction, thereby excessively rotating the latch 12 at the full-latch position to strongly push the vehicle door 3 toward the vehicle body 1. And a door lock device with an automatic door closing mechanism.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a vehicle body, 2 denotes a doorway formed on a side surface of the vehicle body 1, and 3 denotes a door provided at the doorway 2, and in this embodiment, a sliding door which slides in the front-rear direction with respect to the vehicle body 1 to open and close. Is illustrated. 4 is a front side wall of the doorway 2, 5 is a rear side wall of the doorway 2, 6 is a front striker provided on the front side wall 4, 7 is a front latch unit provided on a front end of the sliding door 3, and 8 is a rear side wall 5. The rear striker provided, 9 is the sliding door 3
The rear latch unit is provided at the rear end of the rear side.

In FIG. 2, reference numeral 10 denotes a body of the rear latch unit 9, and a latch 12 having an engagement groove 11 for engaging with the rear striker 8 is formed on one side surface of the body 10 by a latch shaft 13. Further, ratchets 14 which are engaged with the latches 12 to prevent the latches 12 from rotating in the reverse direction are rotatably fixed by ratchet shafts 15 respectively. 1
Reference numeral 6 denotes a spring for urging the latch 12 in the counterclockwise direction in FIG.

When the sliding door 3 is slid to the front side to close the door, first, the front latch unit 7 of the door 3 is engaged with the front striker 6, and then the engagement portion between the front striker 6 and the front latch unit 7 is centered. Then, the rear end of the sliding door 3 rotates toward the vehicle body 1 and the rear striker 8 is engaged with the latch 12 of the rear latch unit 9. Then, the latch 12 rotates clockwise in FIG. 2, and the ratchet 14 is engaged with the half-latch step 17 formed on the latch 12 to be in a half-latch state. Further, the latch 12 is rotated and the full-latch step formed on the latch 12 is rotated. Ratchet to 18
Are engaged in a full latch state, and the door is closed.
When the door is closed in the fully latched state, the outer surface 19 of the door 3 and the outer surface 20 of the vehicle body 1 are flush with each other as shown in FIG. 1, and the door 3 and the vehicle body 1 are
It becomes almost watertight with 1 in between. Although the weather strip 21 is fixed to the vehicle body 1 in FIG. 1, it may be provided on the sliding door 3 or on both sides, and only a part is shown in FIG. 1. However, it is provided so as to surround the entire periphery of the entrance 2.

A rotary shaft 22 penetrating the body 10 is provided above the latch shaft 13, and a rotary arm 23 is fixed to one side of the rotary shaft 22. A link 24 is pivotally mounted on the rotating arm 23, and a roller 25 is axially fixed to a tip of the link 24. The roller 25 is movably engaged with a guide groove 26 formed in the body 10. As shown in FIG. 3, a sector-shaped lever 27 is fixed to the other side of the rotating shaft 22, and one end of a wire 28 is wound around the periphery of the sector-shaped lever 27.
The other end of the wire 28 is connected to a motor 29. When the motor 29 winds the wire 28, the fan-shaped lever 2
3 rotates rightward in FIG. 3, and the rotating arm 23 connected via the rotating shaft 22 rotates leftward in FIG. 2, whereby the roller 25 moves rightward along the guide groove 26. Reference numeral 30 denotes a spring for urging the fan-shaped lever 27 in the counterclockwise direction.

The latch 12 has an engaging leg 31 as shown in FIG. When the latch 12 is in the half-latch state, the engagement leg 31 is at the half-latch position A where it overlaps with the guide groove 26. In this state, when the roller 25 is moved rightward along the guide groove 26 by the power of the motor 29,
The roller 25 engages with the engaging leg 31 to rotate the latch 12 clockwise, and when the engaging leg 31 moves to the full latch position B, the ratchet 1
4 are engaged, and a full latch state is established, so that the door can be completely closed. This is the automatic closing.

Reference numeral 32 denotes an L-shaped switch arm provided on the other side of the body 10, which is rotatably fixed to an end of the latch shaft 13. The switch arm 32 is connected to the latch 12 by a connection pin 33 so that the latch 12
And rotate together. Reference numeral 34 denotes a latch position detection switch. When the switch arm 32 rotates, the contact piece 35 is pressed and turned on / off. An automatic door closing controller 36 rotates the motor 29 in accordance with the output of the latch position detection switch 34.

The relationship between the controller 36 and the latch position detection switch 34 will be described with reference to FIGS.
Is an open state, the latch 12 is held at the open position by the elasticity of the spring 16, and the latch position detection switch 34
Is off. In this state, the controller 36
Does not rotate the motor 29. FIG. 5 shows a half-latched state in which the rear striker 8 is engaged with the latch 12 by manual closing, and the ratchet 14 is engaged with the half-latch step 17 of the latch 12. In this state,
The switch arm 32 comes into contact with the contact piece 35 to turn on the latch position detection switch 34, whereby the controller 36 starts energizing the motor 29 and starts the automatic door closing. FIG. 6 shows a full latch state in which the ratchet 14 is engaged with the full latch step 18 of the latch 12, in which state the latch position detection switch 34 is still on, and therefore, the controller 36
The power supply to is continued. FIG. 7 shows a state in which the latch 12 is excessively rotated from the full latch position. In this state, the switch arm 32 separates from the contact piece 35 and turns off the latch position detection switch 34, whereby the controller 36 The energization to 29 is stopped. As described above, the controller 36 rotates the motor 29 when the latch 12 is at the half-latch position, and stops the motor 29 when the latch 12 is at the excessive rotation position. In addition,
When the motor 29 stops, the fan-shaped lever 27 returns to the position shown in FIG.
Also returns to the position of FIG.

A ratchet lever 37 is rotatably fixed to the ratchet shaft 15. Ratchet lever 37
Is connected to the ratchet 14 by a pin 38 so that the two rotate integrally. 39 is an intermediate lever for rotating the ratchet lever 37.

In this embodiment, the motor 2
9, the controller 36 and the like are provided in an operation unit 40 formed separately from the rear latch unit 9, as shown in FIGS. FIG. 8 is a block diagram of components provided in the operation unit 40. Reference numeral 41 denotes an open lever connected to an opening handle 42 of the door 3;
Reference numeral 3 denotes a lock lever connected to the key cylinder 44 of the door 3. As is well known, the lock lever 43 is switched between a lock position and an unlock position, and when in the unlock position, the open lever 41 and the intermediate lever 39 are switched.
Is connected to the rod 45 that leads to. Therefore, when the open lever 41 is rotated by the opening operation of the door opening handle 42, the ratchet lever 37 is rotated via the intermediate lever 39, whereby the ratchet 14 is disengaged from the latch 12 and the door can be opened. However, in the locked position, the open lever 41 and the intermediate lever 39
In this way, the intermediate lever 39 does not rotate even if the open lever 41 is rotated by the door opening operation of the door opening handle 42, so that the door cannot be opened. Reference numeral 46 denotes a lock motor for switching the lock lever 43. Heretofore, what is conventionally called a door lock device is a combination of the latch unit 9 and the operation unit 40 of the present application.

Thus, in the present invention, the controller 36 is provided with a manual surplus rotation circuit 47. The manual excess rotation circuit 47 is a circuit that is operated by a driver when the moisture attached between the door 3 and the vehicle body 1 freezes in a cold region and the door 3 cannot be easily opened. When the surplus rotation circuit 47 operates, the motor 29 rotates even in the door closed state. Then, similarly to the case of the automatic door closing, the roller 25 moves along the guide groove 26 and engages with the engaging leg 31 of the latch 12 at the full latch position, thereby rotating the latch 12 to the excessive rotation position, thereby Then, the door 3 is pushed into the vehicle body 1. That is, in the fully latched state, as shown in FIG. 1, the outer surface 19 of the door 3 and the outer surface 20 of the vehicle body 1 are flush with each other, but when the latch 12 rotates excessively, the door 3 moves about 5 mm in the direction of arrow C. I do. As described above, when the door 3 moves in the direction C, a strong external pressure is applied to the frozen portion 48 formed between the weather strip 21 and the door 3, so that the frozen portion 48 is cracked or broken from the attached portion. As a result, the frozen state between the door 3 and the vehicle body 1 is released. Therefore, thereafter, the door can be easily opened by a normal door opening operation.

As a specific method of operating the manual excess rotation circuit 47, when the lock lever 43 is unlocked by the key cylinder 44 (the motor 46
May be moved), when the door opening handle 42 is operated to open the door, and the like. However, the present invention is not limited to this, and a special switch can be used. However, actually, the icing is noticed when getting into a parked car (it hardly freezes in a driving car), so a series of door opening operations such as unlocking operation and steering wheel operation are performed. It is preferable that the signal is an operation signal of the manual surplus rotation circuit 47.

When the door is operated by the door opening handle 42, some contrivance may be required. That is, normally, when the door opening handle 42 is operated, the open lever 41 rotates, and the rod 45 and the intermediate lever 3 are rotated.
9, the ratchet lever 37 is rotated, thereby releasing the ratchet 14 from the latch 12 and opening the door. When the door opening handle 42 is operated, the manual extra rotation circuit 47 is operated. , Ratchet 1
4 is disengaged from the latch 12, the motor 29 rotates and the roller 25 engages with the engaging leg 31 of the latch 12 at the full latch position B to move the latch 12 to the excessive rotation position. It is assumed that 12 does not return to the open position and cannot be opened. For this reason, if the door opening operation of the door opening handle 42 is continued for a predetermined time (for example, 5 seconds) or more, it may be considered that the door cannot be opened due to icing and the manual excess rotation circuit 47 is operated. . In this case, when the door can be immediately opened by a normal door opening operation, the manual excess rotation circuit 47 does not operate, so that energy can be saved.

In the configuration operated by the unlocking operation, the manual excess rotation circuit 47 is operated even in the summer season. Therefore, as a measure to prevent the operation during the non-icing condition, the controller 36 controls the controller 36 to control the temperature inside or outside the vehicle. It is also possible to connect a temperature sensor 49 to be measured and enable the manual excess rotation circuit 47 only when the sensor 49 measures a temperature equal to or lower than a predetermined value. In this case, when the unlocking operation is performed, even if the temperature is equal to or higher than the predetermined temperature, it may actually be frozen.
When a temperature equal to or lower than a predetermined value is measured during a period from when the door is closed to when the unlock operation is performed, the manual excess rotation circuit 47 may be made operable.

If the manual excess rotation circuit 47 is operated by an erroneous operation in the door opening state, the latch 12 is in the open position in the automatic door closing mechanism shown in the embodiment of the present invention.
Since the roller 25 does not engage with the engaging leg 31 of the latch 12, the latch 12 does not rotate. However, since the roller 25 moves rightward alone along the guide groove 26, immediately after the manual excess rotation circuit 47 is activated. When the door is closed, there is a possibility that the latch 12 collides with the roller 25 moving to the right, causing a door closing failure.
Therefore, in the present application, as a safety measure, when the latch 12 is at the open position, the function of the manual excess rotation circuit 47 is stopped. The manual surplus rotation circuit 47
Although described as a part of the controller 36, a circuit independent of the controller 36 may be used.

[0019]

When the sliding door 3 which is opened is slid forward, the front latch unit 7 of the sliding door 3 engages with the front striker 6, and the engagement between the front striker 6 and the front latch unit 7 is established. The rear end of the sliding door 3 rotates toward the vehicle body 1 around the joint, and the latch 12 of the rear latch unit 9 engages with the rear striker 8, whereby the latch 12 rotates. In this door closing operation, if the force for closing the sliding door 3 is weak, the door 3 stops until the half latch state in which the ratchet 14 is engaged with the half latch step 17 of the latch 12 as shown in FIG. When the switch 12 is in the half-latch position, the switch arm 32 pushes the contact piece 35 of the latch position detection switch 34 to turn on the latch position detection switch 34, whereby the controller 36 energizes the motor 29 and pulls the wire 28. Then, the fan-shaped lever 27 is rotated. Then, the rotating shaft 22
The rotating arm 23 also rotates through the roller 25 and the roller 25
6, and engages with the engagement leg 31 of the latch 12 at the half latch position A in FIG. 2 to forcibly rotate the latch 12 in the full latch direction. 7, the latch position detection switch 34 is turned off, and the controller 36 stops energizing the motor 29. Then, the latch 12 is reversed by the action of the spring 16, and the ratchet 14 is engaged with the full latch step 18 of the latch 12 to complete the door closing.

However, in a cold region, the moisture adhering between the weather strip 21 and the door 3 freezes during parking, and a frozen portion 48 is formed, and the door cannot be easily opened. Even in such a case, according to the present invention, when the lock lever 43 is unlocked by the key cylinder 44 (or a remote controller) or the door opening handle 42 is operated to open, the manual excess rotation circuit 47 operates and the motor 29 rotates the latch 12 from the full latch position of FIG. 6 to the extra rotation position of FIG. For this reason, the latch 12 further holds the striker 8 from the normal closed position, and the door 3 is
Is moved in the direction of arrow C by about 5 mm from the closed state. As a result, a strong external pressure is applied to the frozen portion 48 formed between the weather strip 21 and the door 3, and the frozen portion 48 is cracked or broken or the adhered portion is peeled off. The door can be easily opened by the operation.

[0021]

As described above, according to the present invention, the latch 12 which is engaged with the striker 8 fixed to the vehicle body 1 to rotate from the open position to the full latch position via the half latch position is provided.
A ratchet 14 that engages with the latch 12 to maintain an engaged state between the latch 12 and the striker 8; and a ratchet 14 that is connected to an opening handle 42 of the vehicle door 3 and rotates to release the ratchet 14 from the latch 12. An open lever 41 for detaching and opening the door, and a key cylinder 4 for the vehicle door 3
4 and a lock lever 43 that switches between an unlock position that enables the opening operation of the open lever 41 and a lock position that disables the opening lever 41 and a lock lever 43 that is connected with the latch 12 and rotates forward when the latch 12 is rotated forward. It has a motor 29 that can rotate toward the full latch position, and a controller 36 that rotates the motor 29 forward to rotate the latch 12 in the full latch direction when the latch 12 is moved from the open position to the half-latch position by closing the door. In the lock device attached to the vehicle door 3, the latch 1
When the motor 29 is operated by a manual operation, the motor 29 is rotated forward and the latch 12 at the full latch position is excessively rotated to cause the vehicle door 3 to rotate excessively beyond the full latch position. Since the door lock device with the automatic door closing mechanism is connected to the manual excess rotation circuit 47 that is strongly pressed toward the vehicle body 1, even if the door 3 and the vehicle body 1 freeze, it can be easily and reliably crushed,
Since it can be peeled off, it is possible to prevent the door from being opened due to icing. Further, in implementation, a conventionally known automatic door closing mechanism can be used substantially as it is, and therefore, it can be manufactured at low cost. Further, in the present invention, the manual extra rotation circuit 47 is configured to operate when the door opening handle 42 is operated, and a door lock device with an automatic door closing mechanism. A door lock device with an automatic door closing mechanism configured to operate when continuously operated for a predetermined time or more, and the manual excess rotation circuit 47
Is a door lock device with an automatic door closing mechanism configured to operate when the lock lever 43 is switched to the unlock position, and the operation of the manual excess rotation circuit 47 can be started by a series of door opening operations. A switch is not required, and when operating, it is not necessary to learn complicated operation methods, and it operates only by opening the door, so even those who do not know that the manual extra rotation circuit 47 is attached can use it unconsciously Can be. In addition, the present invention is a door lock device with an automatic door closing mechanism in which the manual excess rotation circuit 47 is not operated when the latch 12 is in the open position, so that the latch 12 may be inadvertently rotated in the open state. There is no. Further, according to the present invention, a temperature sensor 49 for measuring the temperature inside or outside the vehicle is connected to the controller 36, and the manual excess rotation circuit 47 can be operated only when the temperature sensor 49 detects a temperature lower than a predetermined value. Since the door lock device with the automatic door closing mechanism configured as described above is used, it is possible to prevent useless movement during non-freezing. Further, in the present invention, a temperature sensor 49 for measuring the temperature inside or outside the vehicle is connected to the controller 36, and the manual excess rotation circuit 47 detects when the temperature sensor 49 detects a temperature below a predetermined time within a predetermined time. Door lock device with an automatic door closing mechanism configured to be able to operate only
Unnecessary movement during non-freezing can be prevented, and even if
Even if the temperature during operation is high, it will operate reliably when there is actually a possibility of freezing.

[Brief description of the drawings]

FIG. 1 is an overhead cross-sectional view of a sliding door.

FIG. 2 is a side view of the rear locking device.

FIG. 3 is another side view of the rear locking device.

FIG. 4 is an explanatory diagram of a door open state.

FIG. 5 is an explanatory diagram of a half latch state.

FIG. 6 is an explanatory diagram of a full latch state.

FIG. 7 is an explanatory diagram of a surplus rotation state.

FIG. 8 is a block diagram of an operation unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Entry and exit, 3 ... Door, 4 ... Front side wall, 5 ... Rear side wall, 6 ... Front side striker, 7 ... Front side latch unit, 8
... rear striker, 9 ... rear latch unit, 10 ... body, 11 ... engagement groove, 12 ... latch, 13 ... latch shaft,
14 ... ratchet, 15 ... ratchet shaft, 16 ... spring,
17: half-latch step, 18: full-latch step, 19
... door outer surface, 20 ... vehicle body outer surface, 21 ... weather strip, 22 ... rotating shaft, 23 ... rotating arm, 24 ... link,
25 ... roller, 26 ... guide groove, 27 ... fan-shaped lever, 28 ...
Wire, 29 motor, 30 spring, 31 engaging leg, 32 switch arm, 33 pin, 34 latch position detection switch, 35 contact piece, 36 controller, 37 ratchet lever, 38 pin 39: middle lever, 40: operation unit, 41: open lever,
42 ... door opening handle, 43 ... lock lever, 44 ... key cylinder, 45 ... rod, 46 ... motor, 47 ... manual extra rotation circuit, 48 ... freezing part, 49 ... temperature sensor.

Claims (7)

(57) [Claims] 1. A latch 12 which engages with a striker 8 fixed to a vehicle body 1 and rotates from an open position to a full latch position through a half latch position, and engages with the latch 12 to cause the latch 12 and the striker 8 to engage. A ratchet 14 for maintaining an engaged state with the door, and an opening handle 42 for the vehicle door 3.
An open lever 41 is connected to the key lever 44 of the vehicle door 3 to open the door by releasing the ratchet 14 from the latch 12 when the ratchet 14 is rotated. A lock lever 43 for switching to a lock position for disabling the motor, and a motor 2 coupled to the latch 12 for rotating the latch 12 toward the full latch position when the latch 12 is rotated forward.
And a controller 36 for rotating the motor 12 in the full latch direction by rotating the motor 29 forward when the latch 12 is moved from the open position to the half-latch position by closing the door. , The latch 12 is configured to be able to rotate excessively beyond the full latch position, and when the motor 29 is operated by a manual operation, the motor 29 is rotated forward to excessively rotate the latch 12 at the full latch position, thereby causing the vehicle to rotate excessively. A door lock device with an automatic door closing mechanism in which a manual excess rotation circuit 47 for strongly pressing the door 3 toward the vehicle body 1 is connected. 2. The door lock device with an automatic door closing mechanism according to claim 1, wherein the manual excess rotation circuit 47 is activated when the door opening handle 42 is operated. 3. The door lock device with an automatic door closing mechanism according to claim 1, wherein the manual excess rotation circuit 47 is activated when the door opening handle 42 is continuously operated for a predetermined time or more. 4. The door lock device with an automatic door closing mechanism according to claim 1, wherein the manual excess rotation circuit 47 is activated when the lock lever 43 is switched to an unlock position. 5. The door lock device with an automatic door closing mechanism according to claim 1, wherein the manual excess rotation circuit 47 is not operated when the latch 12 is at an open position. 6. The controller according to claim 2, wherein a temperature sensor 49 for measuring the temperature inside or outside the vehicle is connected to the controller 36, and the manual surplus rotation circuit 47 is provided with a predetermined temperature. A door lock device with an automatic door closing mechanism configured to operate only when the following temperatures are detected. 7. The controller according to claim 2, wherein a temperature sensor 49 for measuring the temperature inside or outside the vehicle is connected to the controller 36, and the manual surplus rotation circuit 47 is connected to the predetermined temperature sensor 49. A door lock device with an automatic door closing mechanism configured to operate only when a temperature equal to or lower than a predetermined value is detected within a time period.