JP2000064685A - Door lock operating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle door lock operating device that can open a vehicle door even in the case of an unlatching motor being put out of action due to a failure. SOLUTION: An exclusive auxiliary battery 8 independent of a main battery is provided near or integrally with a door lock body of a door lock 5 for a vehicle. Even in the case of an unlatching motor being put out of action due to the stop of feeding from the main battery to the unlatching motor caused by a failure such as battery exhaustion, the unlatching motor is driven by the auxiliary battery 8 as a backup to move the door lock body to open a vehicle door 1. An inner panel in a place corresponding to a storage part 43 in a door lock case 20 is provided with a cover member 45 such as a closable cover so as to easily perform maintenance of the auxiliary battery 8 without removing an interior panel of the vehicle door 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock operating device for driving an unlatching operation of a door mounted on a vehicle such as an automobile by a motor.

[0002]

2. Description of the Related Art Conventionally, in Japanese Unexamined Patent Publication No. 9-105262, a vehicle door lock that keeps a door closed by engagement between a latch and a striker, a rotation output of an unlatch motor, a link mechanism and a locking pawl. An unlatch actuator with an unlatch function that moves the latch to a position where it can be disengaged from the striker by transmitting it to the latch via a member (ratchet), and an unlatch motor and a double lock motor separately provided By transmitting the rotation output of the to the latch via the link mechanism and ratchet, it has a double lock function that moves the latch to a position where it is impossible to disengage the latch and striker even if the internal operation lever is manually operated. Described is a vehicle door lock operating device having a double lock actuator. It has been.

[0003]

However, it is described that the conventional vehicle door lock operating device is provided with a link mechanism for opening the door from the vehicle interior side by manually operating the internal operating lever. However, there is no disclosure of a method for opening the door from outside the vehicle compartment by means other than the motor. Therefore, the door lock control device (EC
Due to malfunction of (U), battery rise, disconnection, etc.,
When the power supply to the motor becomes impossible, the unlatch actuator does not move, so the latch cannot be moved to a position where it can be disengaged from the striker, and the door cannot be opened. Is occurring.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door lock operating device capable of opening a door even if the motor does not operate due to a failure.

[0005]

According to the first aspect of the present invention, when the power supply from the main battery to the motor becomes impossible, the power supply state is switched so as to supply power from the auxiliary battery to the motor. As a result, the unlatch actuator can be operated, and the door lock can be moved to the unlatch state in which the door is released. Therefore, even if power cannot be supplied from the main battery to the motor, the door can be opened from the vehicle interior side and the vehicle exterior side.

According to the second aspect of the present invention, by incorporating the auxiliary battery in the door lock, there is no need to provide a dedicated accommodation space for the auxiliary battery, and the auxiliary battery and the motor can be connected. Since no wire harness is required, there is no need to worry about disconnection or short circuit. Also, when installing the door lock on the door, the auxiliary battery can be installed on the door at the same time as the door lock. .

According to the third aspect of the invention, the auxiliary battery is accommodated in the accommodation portion provided between the outer panel and the inner panel of the door, and the inner panel is provided with the window portion through which the auxiliary battery can be taken out. By providing the auxiliary battery, the auxiliary battery can be easily repaired or replaced without removing the interior of the door.

According to the fifth aspect of the present invention, by providing the cam having a functionally significant shape, when the electric power is supplied from the auxiliary battery to the motor, the motor is driven in the direction opposite to the normal operation. By rotating the cam, the operation time becomes longer than that in the normal operation, but the reduction ratio with respect to the rotation angle of the cam can be set to be large. As a result, the current consumption of the motor can be reduced, the auxiliary battery can be downsized, and the door lock operating device itself can be downsized.

According to the sixth aspect of the present invention, by providing the cam having a functionally significant shape, when the door is not unlatched in the normal operation when the motor is supplied with electric power from the main battery, Even if the motor is driven by the battery, the door can be opened by rotating the motor in the direction opposite to that in normal operation.

According to the seventh and eighth aspects of the present invention, the half-latch operating means includes both external operating means operable from outside the vehicle compartment and internal operating means operable from the vehicle interior. Alternatively, by providing one of them, the half-latch operation for changing the door lock from the door closed state to the half door state can be mechanically performed.

According to the inventions of claims 9 to 11, when the half-door state detecting means detects that the half-door state has been reached, power is supplied from the auxiliary battery to the motor. By switching the state, when the auxiliary battery is operating, the door lock is mechanically changed from the door closed state to the half door state by operating the internal operating means or the external operating means, after reducing the driving load of the motor, or At the same time, drive the motor with an auxiliary battery,
The door lock is designed to be unlatched.

That is, the door reaction force in the half-door state is
Since the door reaction force in the full-latch state is significantly small, the load load on the motor can be reduced, so that the auxiliary battery can be downsized and the auxiliary battery can be downsized. In addition, the mechanical operation such as the operation of the internal operation means or the operation of the external operation means that the door lock is only in the half-door state and not in the unlatched state. Excel.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION [Structure of First Embodiment] An embodiment of the present invention will be described based on the first embodiment with reference to FIGS. Here, FIGS. 1 and 2 are diagrams showing a state in which the vehicle door lock operating device is mounted on a vehicle door, and FIG. 3 is a diagram showing a control system of the vehicle door lock operating device.

The vehicle door lock operating device of this embodiment is
A plurality of (in this example, four) unlatch actuators 2 provided on each vehicle door 1 mounted on a vehicle such as an automobile, and a central control unit (hereinafter referred to as a central ECU) that controls these unlatch actuators 2. 3), a main battery 4 that supplies an operating voltage to the central ECU 3, and supplies power to each unlatch actuator 2, and a plurality of vehicle doors 1 (in this example, four) that are closed. Vehicle linkless door lock (hereinafter abbreviated as vehicle door lock) 5.

Next, the structure of the unlatch actuator 2 of this embodiment will be described with reference to FIGS. Here, FIG. 4 is a view showing a door closed state of the vehicle door lock 5, and FIG. 5 is a view showing an unlatched state of the vehicle door lock 5.

The unlatch actuator 2 includes a resin actuator case 10, a single unlatch motor 9 whose energization is controlled by the central ECU 3, and a reduction gear for reducing the rotational speed of the output shaft 11 of the unlatch motor 9. Built-in mechanism etc. Unlatch motor 9
Is electrically connected to the main battery 4 via power supply lines (electrical wiring) 12, 13, the central ECU 3, the power supply line 14 and the like, and is capable of normal rotation and reverse rotation.

As shown in FIGS. 6 to 8, the reduction gear mechanism has a pinion gear 15 integrally arranged on the output shaft 11 of the unlatch motor 9 by press fitting or the like, and a large-diameter gear 16 meshing with the pinion gear 15. And this large diameter gear 16
And an output cam 18 provided on the outer circumference of the rotating shaft 17. On the upper surface of the output cam 18, the cylindrical pin portion 1
9 are integrally arranged by press fitting or the like. The large-diameter gear 16, the rotary shaft 17, and the output cam 18 are integrally formed of resin.

The central ECU 3 is operated by being supplied with power from the main battery 4, and has a CPU, a ROM, a RAM and an I / O.
It is a microcomputer which is composed of functions such as an O port and is well known in itself. This central ECU
Reference numeral 3 is electrically connected to a courtesy switch, a latch switch, an unlatch switch, etc., and drives the unlatch actuator 2 in response to the unlatch signal. In addition to the unlatch switch, there are a keyless entry and a smart key. The keyless entry includes weak radio waves, infrared light, a remote control method, a combination of a card key and a touch switch. The smart key is a card for opening the vehicle door 1, and the vehicle door 1 can be opened when the user approaches the vehicle with the card.

When the power supply from the main battery 4 to the unlatch motor 9 is impossible (for example, the battery of the main battery 4 goes up, the central ECU 3 has a failure, the wire is disconnected, etc.), the central ECU 3 outputs an abnormality determination signal (OFF). Signal) is output. Further, when power is supplied from the main battery 4 to the unlatching motor 9, the abnormality determination signal (OFF
Signal) is output.

The vehicle door lock 5 includes an unlatch actuator 2 described above, a door lock body 6 that is unlatched by a motor drive of the unlatch actuator 2, and a door control device (hereinafter referred to as a door ECU) 7 that switches a power supply state. , And an auxiliary battery 8 that supplies power to the unlatch motor 9 when power cannot be supplied from the main battery 4 to the unlatch motor 9.

First, the structure of the door lock body 6 of this embodiment will be described with reference to FIGS. The door lock body 6 includes a ratchet 22 rotatably supported on a door lock plate 21 that constitutes a door lock case 20, and a striker 23 in response to the rotation of the ratchet 22.
And a latch 24 for changing the engagement state (meshing state). The door lock plate 21 is provided with a substantially U-shaped cutout portion (groove portion) 25 capable of receiving a substantially U-shaped striker 23 fixed to a vehicle door receiving portion. There is.

The ratchet 22 is the door lock plate 2
It is provided so as to be rotatable around the support shaft 26 as a center. The ratchet 22 has a claw-shaped engaging portion 27 that engages with the latch 24, and the pin portion 1 of the output cam 18.
An engagement piece 28 and the like to be engaged with 9 are provided. A columnar pin portion 29 that engages with the pin portion 19 when the output cam 18 rotates in the direction opposite to the normal operation is provided at the tip portion of the engagement piece 28.

The ratchet 22 is provided with a ratchet return spring 30 for returning the ratchet 22 to the initial position. One end of the ratchet return spring 30 is locked to a rectangular protrusion 31 provided on the door lock plate 21, and the other end is locked to a protruding piece 32 of the ratchet 22.

The latch 24 is provided on the door lock plate 21 so as to be rotatable around a support shaft 33. The latch 24 is in a full-latch position (door closed state) that locks the vehicle door 1 by completely meshing with the striker 23 according to the rotation angle (door closed state), and a half-latch position that is not completely meshed with the striker 23 (half-door state). , By releasing the engagement with the striker 23, the vehicle door 1 is changed to an unlatched position (door open state) or the like.

The latch 24 has a substantially U-shaped notch (opening) 3 capable of engaging with the striker 23.
4 are provided. The latch 24 has a pawl-shaped engaged portion 35 that is engaged with the engaging portion 27 of the ratchet 22 when the vehicle door 1 is completely closed (full latch state), and the vehicle door 1 is completely closed. A claw-shaped engaged portion 36 and the like that are engaged with the engaging portion 27 of the ratchet 22 when the door is in the unclosed half-door state are provided.

The support shaft 3 of the door lock plate 21
Around the circumference of 3, there is a concave portion (opening) for accommodating the latch return spring 37 for returning the latch 24 to the initial position.
38 is formed. One end of the latch return spring 37 is locked to a columnar protrusion 39 provided on the latch 24, and the other end is locked to the groove wall surface of the concave portion 38.

The door ECU 7, which corresponds to the power supply state switching means of the present invention, operates by being supplied with power from the main battery 4 or the auxiliary battery 8, and has CPU, ROM, RA.
The microcomputer is composed of functions such as an M, a power supply state switching circuit, and an I / O port, and is well known in itself. An outer handle switch (not shown) that outputs a door open signal (unlatch signal) of each vehicle door 1, an inner handle switch (not shown), and an auto lock switch (not shown) are connected to the door ECU 7. ing.

When the door ECU 7 receives a door open signal from any of those switches, the central ECU 3
The door open signal (ON signal) is output to the door and the door open signal (ON signal) is output to the unlatch motor 9.

The door ECU 7 supplies power from the auxiliary battery 8 to the unlatch motor 9 when the main battery 4 cannot supply power to the unlatch motor 9 and an abnormality determination signal is input from the central ECU 3. As described above, while switching the power supply state of the unlatch motor 9,
When power is supplied from the auxiliary battery 8 to the unlatch motor 9, the output shaft 11 of the unlatch motor 9 is rotated in the opposite direction to the normal operation.

Further, when the door ECU 7 supplies electric power from the main battery 4 to the unlatch motor 9, the vehicle door 1 does not unlatch during normal operation, and when the abnormality judgment signal is input from the central ECU 3, the main battery is discharged. The power supply state of the unlatch motor 9 is maintained so that the power is supplied from 4 to the unlatch motor 9, and the output shaft 11 of the unlatch motor 9 is rotated in the direction opposite to the normal operation.

The auxiliary battery 8 includes a power supply line 12 and a door EC.
Unlatching motor 9 via U7 and power supply line 40, etc.
Electrically connected to. The auxiliary battery 8 is housed in a rectangular tube-shaped housing portion 43 provided in the door lock case 20 installed between the outer panel 41 and the inner panel 42 of the vehicle door 1, and the door lock plate 2 is provided.
It is mounted on 1.

The opening (insertion port, outlet) 44 of the accommodating portion 43 is formed in the inner panel 42 provided inside the vehicle compartment, as shown in FIGS. 1 and 2. A lid member 45 such as a cover that can open and close the opening 44 is attached to the inner panel 42. Here, 46 in FIG. 2 is an interior panel of the vehicle door 1.

[Operation of First Embodiment] Next, the operation of the vehicle door lock operating device of the present embodiment will be briefly described with reference to FIGS. 1 to 8.

(A) During normal operation (door closed state → unlatched state) As shown in FIG. 4, the engaging portion 27 of the ratchet 22 engages with the engaged portion 35 of the latch 24 to turn off the latch 24. In the door closed state (full latch state) in which the notch portion 34 and the striker 23 mesh with each other at the regular position, the door ECU 7
When the unlatching motor 9 is powered by the main battery 4 in response to the door open signal from the unlatching motor 9, the output shaft 11 of the unlatching motor 9 rotates.

The output shaft 1 of the unlatch motor 9
The pinion gear 15, which is integrally provided on the No. 1 unit, also rotates. As a result, the large-diameter gear 16 that meshes with the pinion gear 15 rotates in the leftward rotation direction shown in the drawings (rotation angle: θ1 = 4, as shown in FIGS. 5 to 7A and 7B).
0 °).

The output cam 18 formed on the outer periphery of the rotary shaft 17 of the large diameter gear 16 rotates in conjunction with the large diameter gear 16. A pin portion 19 is integrally arranged on the output cam 18, and pushes the ratchet 22 rightward in the drawing as the large-diameter gear 16 rotates leftward in the drawing.

The ratchet 22 is shown in FIGS. 5 and 7 (b).
As shown in FIG. 5, the ratchet return spring 30 is bent and rotated about the support shaft 26 in the clockwise direction in the drawing. As a result, the engagement between the engaging portion 27 of the ratchet 22 and the engaged portion 35 of the latch 24 is disengaged. And
Energizing force of the latch return spring 37 (elastic deformation force)
The latch 24, which is operated by, rotates in the clockwise direction in the drawing.

As a result, the opening portion of the cutout portion 34 of the latch 24 is directed to the left in the drawing, and the engagement between the cutout portion 34 and the striker 23 is released, whereby the vehicle door 1 is released (opened). Become. The above is the unlatch operation during normal operation in which the unlatch motor 9 is driven by the central ECU 3 and the main battery 4.

(B) When the auxiliary battery operates (door closed state → unlatched state) In the door closed state as shown in FIG. 4, the door ECU
7 outputs the door open signal, the main battery 4
When the door ECU 7 detects that the control by the central ECU 3 is impossible, the door ECU 7 switches the power supply state so that the unlatch motor 9 is powered by the auxiliary battery 8. Then, the auxiliary battery 8 supplies power to the unlatch motor 9, so that the output shaft 1 of the unlatch motor 9 is fed.
1 rotates in the opposite direction to the normal operation.

The output shaft 1 of the unlatch motor 9
The pinion gear 15, which is integrally provided on the No. 1 unit, also rotates. As a result, as shown in FIG. 5, the large-diameter gear 16 meshing with the pinion gear 15 rotates in the clockwise rotation direction in the figure (rotation angle: θ2 = 260 °).

As a result, the pin portion 19 of the output cam 18 pushes up the pin portion 29 on the ratchet 22 and the support shaft 26
By rotating the ratchet 22 in the right rotation direction in the figure around the center, the door lock body 6 is unlatched (see FIGS. 8A to 8C). And output cam 1
8 rotates rightward in the drawing around the rotation shaft 17 and returns to the initial state (see FIGS. 8C to 8A). The following operation is the same as the normal operation described above.

[Effects of the First Embodiment] As described above, in the vehicle door lock operating device in which the unlatching operation of the vehicle door 1 is performed by the motor drive, the ECU control signal is transmitted in the vicinity of or integrally with the door lock body 6. By providing a dedicated auxiliary battery 8 independent of the driven main battery 4,
Even when the power supply from the main battery 4 to the unlatch motor 9 is stopped due to a malfunction such as malfunction of the central ECU 3, battery exhaustion, disconnection, etc., and the unlatch motor 9 does not operate, the auxiliary battery 8 is used for unlatch. By driving the motor 9, the vehicle door 1 can be reliably released.

Further, by providing a cover member 45 such as an openable cover on the inner panel 42 at a location corresponding to the accommodating portion 43 for accommodating the auxiliary battery 8 in the door lock case 20 so that it can be taken in and out, the vehicle door 1 The auxiliary battery 8 can be easily maintained (repaired or replaced) without removing the interior panel 46. By incorporating the auxiliary battery 8 in the door lock body 6, there is no need to provide a dedicated accommodation space for the auxiliary battery 8,
Since a wire harness for connecting the auxiliary battery 8 and the unlatch motor 9 is not required, there is no fear of disconnection, short circuit, etc., and the door lock body 6 is mounted on the vehicle door 1.
When it is mounted on the vehicle door 1, the auxiliary battery 8 can be mounted on the vehicle door 1 at the same time as the door lock body 6, so that it is very easy to mount on the vehicle.

Here, the central ECU 3 and the main battery 4
The respective reduction ratios are compared between the normal operation by the above and the operation by the door ECU 7 and the auxiliary battery 8 described above. When the efficiency of the cam is η = 0.6, the rotation angle θ3 of the ratchet 22 is 20 °, and therefore the following formula 1 is obtained. Here, the speed reduction ratio during normal operation is A, and the speed reduction ratio during operation by the auxiliary battery 8 is B.

[0045]

[Equation 1]

Therefore, when the unlatch motor 9 is driven by the auxiliary battery 8, the auxiliary battery 8 rotates the output shaft 11 and the output cam 18 of the unlatch motor 9 in the opposite direction to the normal operation, so that the normal operation is performed. A speed reduction ratio of about 4 times that of the time is obtained. That is, the unlatch motor 9
Although the operation time required for the unlatch operation is longer than that in the normal operation, the reduction ratio with respect to the rotation angle of the output cam 18 can be set to a large value by rotating in a direction opposite to that in the normal operation.

As a result, the current consumption of the unlatch motor 9 can be made smaller (smaller power consumption, smaller current drive) than before, so that the auxiliary battery 8 can be made smaller and the vehicle door lock operating device itself can be made smaller. Can be realized.

When the door lock body 6 cannot be unlatched by the normal operation of driving the unlatch motor 9 by the central ECU 3 or the main battery 4 due to the freezing of the vehicle door 1 or the deformation of the vehicle door 1, or the like. Outputs the output cam 18 by switching the power supply state by the door ECU 7 and rotating the output shaft 11 and the output cam 18 of the unlatch motor 9 in the opposite direction to the normal operation even when driven by the main battery 4. Since the reduction gear ratio with respect to the rotation angle can be set large, the vehicle door 1 can be opened.

[Structure of Second Embodiment] An embodiment of the present invention will be described based on a second embodiment with reference to FIGS. 9 to 18. Here, FIG. 9 is a diagram showing an external structure of the vehicle door lock operating device, FIG. 10 is a diagram showing an internal structure of the vehicle door lock operating device, and FIG. 11 is a diagram showing a backup link mechanism. is there.

Unlatching actuator 2 of this embodiment
Is an unlatch motor 9 which is integrated with the door lock body 6 and is electrically connected to the door ECU 7 in the actuator case 10, a sector-shaped sector gear 50 which receives the rotational output of the unlatch motor 9, and a backup lever 51. , Connecting rod 52, inside handle lever 5
3, an inside handle (not shown) for transmitting the operating force to the ratchet 22 via the inside handle rod 54, a backup lever 51, a key cylinder 56 for transmitting the key operating force to the ratchet 22, and the like are incorporated.

The actuator case 10 is integrally formed with a connector portion 57 for electrically connecting the unlatch motor 9 and the central ECU 3. The backup lever 51, the connecting rod 52, the inside handle lever 53, the inside handle rod 54 and the like constitute a backup link mechanism.

The backup lever 51 is rotatably provided on the door lock plate 21 about a support shaft 58, and has a convex locking portion 60 for locking the locked portion 59 of the latch 24. is doing. This backup lever 5
An engaging hole 61 is formed on the opposite side of the first engaging portion 60. An engaging portion 63 that engages with the engaged portion 62 of the ratchet 22 is provided near the engaging hole 61. The connecting rod 52 is rotatably provided on the door lock plate 21 about the support shaft 64, and has a fitting hole 65 formed at one end bent in a substantially orthogonal direction. A fitting hole 66 is formed in the other end bent in the opposite direction.

The inside handle lever 53 is an internal operation lever rotatably provided on the door lock plate 21 about a support shaft 67, and has a fitting hole 6 at one end.
6 has a fitting portion 68 that fits in 6, and the other end has a locking hole 69 for locking the inside handle rod 54.

The sector gear 50 is rotatably provided around the rotary shaft 70, and is engaged with the engaged portion 7 of the ratchet 22.
It has a convex engaging portion 72 that engages with 1. The inside handle corresponds to the half-latch operation means of the present invention, and is an internal operation means for mechanically (mechanically) operating the door lock body 6 from the full-latch state to the half-door state. The inside handle is provided with a half-door state detecting means for detecting a half-door state by half-latch operation.

The key cylinder 56 corresponds to the half-latch operation means of the present invention, and the operation of moving the door lock main body 6 from the full-latch state to the half-door state is performed mechanically from outside the vehicle. It is a means. The key cylinder 56 accommodates a rotor 73 in which about 6 tumblers are installed.

The rotor 73 has a key cylinder 56.
The key cylinder lever 7 can be rotated only when a key (not shown) matching the key is inserted into the insertion port.
The backup lever 51 is moved via 4. The key cylinder lever 74 has an engagement portion 75 that engages with the engagement hole 61 of the backup lever 51. The key cylinder 56 is also provided with a half-door state detecting means (integrated circuit) for detecting that the half-latch state is reached by half-latch operation. The integrated circuit communicates with the central ECU 3 and the door ECU 7.

[Operation of Second Embodiment] Next, the operation of the vehicle door lock operating device of the present embodiment will be briefly described with reference to FIGS. 9 to 18.

First, the movement of the vehicle door lock 5 when the unlatch motor 9 is driven by the main battery 4 will be described with reference to FIGS. 10, 12 and 13.
Here, FIG. 12 (a), (b) and FIG. 13 (a),
FIG. 6B is a diagram showing the movement of the vehicle door lock 5 during normal operation.

As shown in FIG. 10, the engaging portion 27 of the ratchet 22 engages with the engaged portion 35 of the latch 24, and the notch portion 34 of the latch 24 and the striker 23 mesh with each other at the proper position. In the door closed state (full latch state), if the outer side switch or the inside switch is operated while the security of the vehicle door 1 is released by the operation of the keyless entry or the communication from the smart card to the central ECU 3, the unlatch switch opens the door. An open signal is output to the door ECU 7. And the door EC
By receiving the door open signal from U7, the unlatch motor 9 receives the power supply from the main battery 4,
The output shaft 11 of the unlatch motor 9 rotates.

As a result, the pinion gear 15 provided integrally with the output shaft 11 also rotates, so that the sector gear 50 meshing with the pinion gear 15 is shown in FIG.
As shown in FIG. And
With the rotation of the sector gear 50 in the clockwise direction in the figure, the ratchet 22 is pushed up in the diagonal direction to the left in the figure.

The ratchet 22 is shown in FIG.
As shown in FIG. 5, the ratchet return spring 30 is bent and rotated about the support shaft 26 in the clockwise direction in the drawing. As a result, the engagement between the engaging portion 27 of the ratchet 22 and the engaged portion 35 of the latch 24 is disengaged, and the latch 24 on which the biasing force (elastic deformation force) of the latch return spring 37 acts is shown in FIG. As shown, it rotates in the right rotation direction in the figure.

Then, as shown in FIG. 13A, the opening of the notch 34 of the latch 24 is directed to the left in the figure, and the engagement between the notch 34 and the striker 23 is released, whereby the striker 23 is disengaged. Becomes free and unlatch. Then, the unlatch release signal output from the courtesy switch, the latch switch, or the like for lighting the interior light when the vehicle door 1 is in the half-door state or the door-open state causes the main battery 4 to unlatch the motor 9.
Is turned off, and the ratchet 22 and the sector gear 50 are returned to their initial positions by the biasing force (elastic deformation force) of the ratchet return spring 30.

Next, the movement of the vehicle door lock 5 when the unlatch motor 9 is driven by the auxiliary battery 8 will be described with reference to FIGS. 10 and 14 to 18.
Here, FIGS. 14 to 18 are views showing the movement of the vehicle door lock 5 when the auxiliary battery is operated.

When the door is closed as shown in FIG. 10, by inserting a key into the key cylinder 56 and operating the key or operating the inside handle, as shown in FIG. 14 (a). The key cylinder lever 74 rotates the backup lever 51 about the support shaft 58 in the clockwise direction in the drawing. With the rotation of the backup lever 51, the ratchet 22 is pushed down in the clockwise direction in the drawing.

The ratchet 22 is shown in FIG.
As shown in FIG. 5, the ratchet return spring 30 is bent and rotated about the support shaft 26 in the clockwise direction in the drawing. As a result, the engagement portion 27 of the ratchet 22 and the engaged portion 35 of the latch 24 are disengaged, and the latch 24
The biasing force (elastic deformation force) of the latch return spring 37 acts on the latch return spring 37.
Since the engaged portion 36 of the latch 24 is locked by 0, the latch 24 does not rotate and does not unlatch.

Here, when the key operation or the operation of the inside handle is returned to the original state, the backup lever 51 rotates in the left rotation direction in the figure around the support shaft 58. Along with this, as shown in FIG. 14B, the latch 24 is rotated in the clockwise rotation direction in the figure by the biasing force (elastic deformation force) of the latch return spring 37.

On the other hand, as shown in FIG. 15 (a), the ratchet 22 rotates in the left rotation direction in the figure around the support shaft 26 by the urging force (elastic deformation force) of the ratchet return spring 30. Then, as shown in FIG. 15B, when the latch 24 and the backup lever 51 are disengaged from each other, the engaging portion 27 of the ratchet 22 and the engaged portion 36 of the latch 24 are engaged with each other to rotate the latch 24. The position is a half-latch position (half-door state) in which the striker 23 is not completely meshed. As a result, the half-door state detecting means (an integrated circuit built in the key cylinder 56 or a position sensor such as a touch sensor installed near the inside handle) detects the half-door state of the vehicle door 1 and communicates with the door ECU 7. (Semi-door state detection signal is output).

In the half-door state shown in FIG. 16A, when the door ECU 7 detects that the main battery 4 or the central ECU 3 cannot control while the door ECU 7 outputs the door open signal, The ECU 7 switches the power supply state so that the unlatch motor 9 is powered by the auxiliary battery 8. Then, the unlatch motor 9 is supplied with electric power by the auxiliary battery 8, so that the output shaft 11 of the unlatch motor 9 rotates in the same direction as in the normal operation.

Then, the output shaft 1 of the unlatch motor 9
The pinion gear 15, which is integrally provided on the No. 1 unit, also rotates. As a result, the sector gear 50 that meshes with the pinion gear 15 rotates in the clockwise rotation direction in the figure, as shown in FIG. As a result, the engaging portion 72 of the sector gear 50 pushes up the engaged portion 71 on the ratchet 22 to rotate the ratchet 22 in the clockwise rotation direction in the drawing about the support shaft 26.

As a result, the engaging portion 27 of the ratchet 22 is
And the engaged portion 36 of the latch 24 are disengaged, and the latch 24, to which the biasing force (elastic deformation force) of the latch return spring 37 acts, moves in the clockwise direction in the figure as shown in FIG. 17A. Rotate. Then, the opening portion of the cutout portion 34 of the latch 24 faces the left direction in the drawing, and the engagement between the cutout portion 34 and the striker 23 is released, so that the striker 23 becomes free and unlatches.

The unlatching release signal output from the latch switch or the like stops (OFF) the energization of the auxiliary battery 8 to the unlatching motor 9, and the ratchet 22 is urged by the ratchet return spring 30 (elastic deformation force). And the sector gear 50 is returned to the initial position. Here, the communication for releasing the security to the door ECU 7 is performed when a key operation is performed or when the door lock body 6 mechanically becomes a half-door state after the key operation.

Here, in the half-door state as shown in FIG. 18A, even if a key is inserted into the key cylinder 56 and a key is operated, or an inside handle is operated, the state shown in FIG. ), The backup lever 51 tries to rotate in the clockwise direction in the drawing around the support shaft 58. However, the locking portion 60 of the backup lever 51 interferes with the locked portion 59 of the latch 24, and the ratchet 22 cannot be pushed down and unlatched.

[Effects of the Second Embodiment] The vehicle door lock operating device in which the unlatching operation of the vehicle door 1 is driven by the unlatching motor 9 as described above is caused by a failure in the main battery 4 due to a failure such as battery exhaustion or disconnection. Control for performing unlatch operation when power cannot be supplied from the unlatch motor 9 to the unlatch motor 9
It is equipped with a backup auxiliary battery 8 for supplying power to the battery.

When the auxiliary battery is operated, the door lock body 6 is mechanically (mechanically) changed from the door closed state (full latch state) to the half door state (half latch state) by a key operation or an inside handle operation.
After the driving load of the unlatch motor 9 is reduced, or at the same time, the unlatch motor 9 is driven by the auxiliary battery 8 and the ratchet 22 is rotated to unlatch the vehicle door 1.

That is, in order to reduce the required torque of the unlatch motor 9 when the unlatch motor 9 is driven by the auxiliary battery 8, the unlatch motor 9 once mechanically brings the vehicle door 1 into the half-door state. To open.

## EQU00002 ## Load load of unlatch motor 9 = door reaction force.times.
Friction coefficient (for example, about 0.2) Here, the door reaction force in the full latch state is 30 kgf.
At -40 kgf, the door reaction force in the half-door state is 5 kgf or less because the bending load of the seal rubber around the vehicle door is smaller than that in the full-latch state.

Therefore, since the door reaction force in the half-door state is significantly smaller than the door reaction force in the full-latch state, the load load on the unlatch motor 9 can be reduced, and the auxiliary battery 8 can be stored in a small capacity. The auxiliary battery 8 is small in size and low in cost.

Further, the mechanical operation such as the key operation or the operation of the inside handle only causes the door lock body 6 to be in the half-door state and not in the unlatched state, so that the vehicle door 1 cannot be opened. It has an excellent effect on crime prevention.

[Modification] In the present embodiment, the present invention is applied to a vehicle door lock in which a door lock body 6 for locking or unlocking a vehicle door 1 mounted on an automobile or the like can be driven by a motor or operated by a key. Although applied to the operating device, the present invention locks or unlocks vehicle doors (front doors, rear doors, back doors, etc.) equipped in small vehicles such as passenger cars and commercial vehicles or rail vehicles, and large vehicles such as buses and trucks. The door lock body (vehicle door lock) for performing the above may be applied to a vehicle door lock operation device capable of driving a motor or operating a key.

Further, the present invention applies a motor to a door lock main body (building door lock) that locks or unlocks a building door lock of a door installed not only in a vehicle but also in a building such as a house or a store. It may be applied to a door lock operating device for buildings that can be driven or operated by keys.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a state in which a vehicle door lock operating device is attached to a vehicle door (first embodiment).

FIG. 2 is a perspective view showing another example of a state in which the vehicle door lock operating device is mounted on the vehicle door (first embodiment).

FIG. 3 is a block diagram showing a control system of a vehicle door lock operating device (first embodiment).

FIG. 4 is a schematic view showing a door closed state of a vehicle door lock (first embodiment).

FIG. 5 is a schematic view showing an unlatched state of a vehicle door lock (first embodiment).

FIG. 6 is a schematic diagram showing a main configuration of a vehicle door lock operating device (first embodiment).

7 (a) and 7 (b) are explanatory views showing the movement of the vehicle door lock during normal operation (first embodiment).

8A to 8D are explanatory views showing the movement of the vehicle door lock during operation of the auxiliary battery (first embodiment).

FIG. 9 is a perspective view showing an external structure of a vehicle door lock operating device (second embodiment).

FIG. 10 is a schematic view showing an internal structure of a vehicle door lock operating device (second embodiment).

FIG. 11 is a perspective view showing a backup link mechanism (second embodiment).

12 (a) and 12 (b) are explanatory views showing the movement of the vehicle door lock during normal operation (second embodiment).

13A and 13B are explanatory views showing the movement of the vehicle door lock during normal operation (second embodiment).

14 (a) and 14 (b) are explanatory views showing the movement of the vehicle door lock when the auxiliary battery is operated (second embodiment).

15 (a) and 15 (b) are explanatory views showing the movement of the vehicle door lock when the auxiliary battery is operated (second embodiment).

16 (a) and 16 (b) are explanatory views showing the movement of the vehicle door lock during operation of the auxiliary battery (second embodiment).

17 (a) and 17 (b) are explanatory views showing the movement of the vehicle door lock during operation of the auxiliary battery (second embodiment).

18 (a) and 18 (b) are explanatory views showing the movement of the vehicle door lock during operation of the auxiliary battery (second embodiment).

[Explanation of symbols]

1 Vehicle Door 2 Unlatch Actuator 3 Central ECU 4 Main Battery 5 Vehicle Door Lock 6 Door Lock Main Body 7 Door ECU (Power Supply State Switching Means) 8 Auxiliary Battery 9 Unlatch Motor 18 Output Cam 22 Ratchet 23 Striker 24 Latch 41 Outer Panel 42 Inner panel 43 Storage part 44 Opening part (insertion port, take-out port, window part) 45 Lid member 46 Interior panel 56 Key cylinder (half latch operating means, half door state detecting means)

Claims (11)

[Claims] 1. A door lock which is changed to at least a door closed state for locking a door and an unlatched state for releasing the door, and a door lock having a motor which is activated when power is supplied. An unlatch actuator for performing an unlatch operation to change the door closed state to the unlatch state; (c) a main battery electrically connected to the motor; and (d) an independent latch provided from the main battery. An auxiliary battery electrically connected to the motor, and (e) a power supply state in which power is supplied from the auxiliary battery to the motor when power supply from the main battery to the motor is disabled. A door lock operation device comprising a power supply state switching means for switching. 2. The door lock operating device according to claim 1, wherein the auxiliary battery is built in the door lock. 3. The door lock operating device according to claim 1, wherein the door has an accommodating portion that accommodates the auxiliary battery between an outer panel and an inner panel, and the inner panel includes: A door lock operating device comprising: a window portion through which the auxiliary battery can be taken out from the accommodating portion; and a lid member that can open and close the window portion. 4. The door lock operating device according to any one of claims 1 to 3, wherein the door lock is located at a full-latch position where it engages with a striker and an unlatch position where the engagement with the striker can be disengaged. A latch that is changed, the unlatch actuator has a cam that rotates the latch from the full latch position to the unlatch position by rotating integrally with the output shaft of the motor, and the cam is A door lock operating device having a shape capable of moving the latch from a full-latch position to an unlatch position more quickly when rotated in a rotation direction than when rotated in a direction opposite to a normal operation. 5. The door lock operating device according to claim 4, wherein the power supply state switching means rotates the motor in a direction opposite to a normal operation when power is supplied from the auxiliary battery to the motor. A door lock operating device, wherein the auxiliary battery and the motor are electrically connected to each other so as to perform the operation. 6. The door lock operating device according to claim 4, wherein the power supply state switching means operates normally when the door does not unlatch when power is supplied from the main battery to the motor. A door lock operating device, wherein the main battery and the motor are electrically connected so as to rotate the motor in a direction opposite to time. 7. A door lock that is changed into at least a door closed state in which the door is completely closed, a half-door state in which the door is not completely closed, and an unlatched state in which the door is released, and (b) power feeding. An unlatch actuator that has a motor that operates when operated, and performs an unlatch operation that changes the door lock from the door closed state to the unlatch state; and (c) a main battery electrically connected to the motor. (D) an auxiliary battery provided independently of the main battery and electrically connected to the motor, and (e) the auxiliary battery when power supply from the main battery to the motor is disabled. Power supply state switching means for switching the power supply state so as to supply power to the motor from (f) the door lock from the door closed state. Serial door lock operation device including a half latch operating means mechanically perform half-latch operation of changing the half-door state. 8. The door lock operating device according to claim 7, wherein the half-latch operating means is both an external operating means operable from outside the passenger compartment and an internal operating means operable from the passenger compartment. Alternatively, a door lock operating device having one of them. 9. The door lock operating device according to claim 8, wherein the internal operating means includes a half-door state detecting means for detecting that the half-latch operation has been performed and the half-door state is reached. The power supply state switching means switches the power supply state so as to supply power from the auxiliary battery to the motor when the half-door state detection means detects that the half-door state has been reached. Door lock operation device. 10. The door lock operating device according to claim 8, wherein the external operating means has a half-door state detecting means for detecting that the half-latch operation has been performed, and the half-door state detecting means is provided. The power supply state switching means switches the power supply state so as to supply power from the auxiliary battery to the motor when the half-door state detection means detects that the half-door state has been reached. Door lock operation device. 11. The door lock operating device according to claim 7, wherein the half-latch operating means includes a half-door state detecting means for detecting that the half-latch operation has been performed and the half-door state is reached. The power supply state switching means switches the power supply state such that power is supplied from the auxiliary battery to the motor when the half-door state detection means detects that the half-door state has been reached. Door lock operating device.