JP5741266B2 - Vehicle door lock device - Google Patents

Description

  The present invention relates to a vehicle door lock device, and in particular, includes a latch that engages with a striker, and a latch mechanism that includes a pawl that can hold the latch in a half-latch state and a full-latch state, and a half-latch state. A latch lever capable of moving the latch to a fully latched state, a drive lever coupled to the latch lever via a drive cable, and an electric motor capable of driving the drive lever by forward rotation or reverse rotation are provided. The present invention relates to a vehicle door lock device provided with a closer device.

  This type of vehicle door lock device is disclosed, for example, in Patent Document 1 below. In the vehicle door lock device disclosed in Patent Document 1 below, when the vehicle door is in a half-door state and the latch of the latch mechanism is in a half-latch state, the electric motor causes the drive lever to rotate forward to drive the drive cable. Since the latch lever is rotated forward via the half latch, the latch in the half latch state moves to the full latch state. When the latch moves to the fully latched state and the vehicle door is fully closed, the electric motor stops and the drive lever, drive cable, latch lever, and the like stop. In addition, after the vehicle door is fully closed, the electric motor reversely rotates the drive lever and reversely rotates the latch lever via the drive cable, so the drive lever, drive cable, latch lever, etc. Move towards position. When the drive lever, drive cable, latch lever, etc. move to the initial position, the electric motor stops and the closer device is in the initial state.

  The fact that the latch of the latch mechanism is in the half latch state, that the latch has moved to the full latch state, that the drive lever, the drive cable, the latch lever, etc. have moved to the initial position is described in, for example, Patent Document 2 below. As shown, each sensor is configured to be detected, and a motor control device (controller) is configured to control the operation of the electric motor based on the detection signal of each sensor.

  Further, in Patent Document 3 below, a position sensor (anti-pinch sensor) detects that the latch in the half latch state has rotated to a predetermined position toward the full latch state, and in this state, between the door and the vehicle body. A configuration is shown in which the electric motor is reversely rotated when a foreign object is sandwiched and the current value supplied to the electric motor reaches a predetermined value.

JP 2007-138532 A JP 2010-84321 A JP-A-9-287336

(Problems to be solved by the invention)
In the above-mentioned Patent Document 3, a configuration is adopted in which the electric motor is reversed when the current value supplied to the electric motor becomes a predetermined value in the detection state of the position sensor (pinch prevention sensor). By the way, the value of the current supplied to the electric motor is greatly influenced by variations in motor torque due to ambient temperature and variations in the construction of the door body. There is a possibility that the door will be pulled into the fully closed state even if foreign matter is caught.

(Means for solving the problem)
The present invention has been made to solve the above problems,
A latch mechanism that includes a latch that engages with the striker, and a pole that can hold the latch in a half latch state and a full latch state;
A latch lever capable of moving a latch in a half latch state to a full latch state, a drive lever connected to the latch lever via a drive cable, and an electric motor capable of driving the drive lever by forward rotation or reverse rotation A closer device comprising:
A mechanical driving force detection device that detects a driving force that is interposed in the driving cable and transmitted from the driving lever to the latch lever;
Detected by the driving force detection device at an initial stage when the electric motor rotates the driving lever forward and rotates the latch lever forward via the driving cable to move the latch from the half latch state to the full latch state. The vehicle door lock device (invention according to claim 1) is provided with control means for stopping or reversely rotating the electric motor when the driving force exceeds a set value.

  In this case, the driving force detection device is provided between the latch lever side inner wire connected to the latch lever, the drive lever side inner wire connected to the drive lever, and both the inner wires. It is also possible to provide a spring that elastically deforms by a predetermined amount when the force reaches a set value and a switch that operates when the spring elastically deforms by a predetermined amount (the invention according to claim 2). This driving force detection device can also be attached to an inner case that is movably attached to an outer case that constitutes a part of the outer tube of the drive cable (the invention according to claim 3), The drive lever side end of the latch lever side inner wire is fixed to the inner case, the latch lever side end of the drive lever side inner wire is assembled to the inner case so as to be relatively movable, and the spring is Between the latch lever side end of the drive lever side inner wire and the inner case, the switch contact portion is fixed to the inner case, and the switch lever portion is connected to the inner side of the drive lever. It is also possible to fix the wire to the latch lever side end (the invention according to claim 4).

(Effects of the invention)
According to the vehicle door lock device of the present invention described above, the mechanical drive force detection device is interposed in the drive cable of the closer device, and the latch moves from the half latch state to the full latch state by the forward rotation of the electric motor. In the initial stage, when the foreign matter is caught between the door and the vehicle body and the driving force detected by the driving force detection device exceeds a set value, the electric motor is configured to stop or reversely rotate by the control device. ing. For this reason, if foreign matter is caught between the door and the vehicle body, the electric motor can prevent the door from being pulled into the fully closed state.

  By the way, in the present invention, a foreign material is sandwiched between the door and the vehicle body by the mechanical driving force detection device that detects the driving force transmitted from the driving lever to the latch lever, which is interposed in the driving cable of the closer device. Is configured to detect. For this reason, it is difficult for the detection of foreign object pinching to be affected by the ambient temperature or the door body mounting, and it is possible to perform pinching detection with high accuracy, and it is possible to accurately avoid the foreign object pinching.

  In carrying out the present invention, a driving force detection device is provided between the inner lever wire, the inner lever wire connected to the latch lever, the inner lever wire connected to the driving lever, and the inner wires. When a spring that elastically deforms by a predetermined amount when the driving force reaches a set value and a switch that operates when the spring elastically deforms by a predetermined amount is provided, for example, a load characteristic at which the spring starts elastic deformation By changing, it is possible to cope with the worst-case door installation.

1 is a side view of a vehicle front portion including an embodiment of a vehicle door lock device according to the present invention. FIG. 2 is an enlarged rear view of the vehicle door lock device shown in FIG. 1. FIG. 3 is a side view of the vehicle door lock device (including a controller that controls the operation of an electric motor) shown in FIG. 2. It is the figure which showed the relationship of a latch, a pole, a latch lever, etc. when the latch of the door lock device for vehicles shown in Drawing 2 and Drawing 3 is in a half latch state, and a latch lever is in an initial state. FIG. 5 is a diagram showing a relationship among a latch, a pole, a latch lever, and the like when the latch shown in FIG. 4 is moved from a half latch state to a full latch state by a latch lever. FIG. 4 is an enlarged side view of an actuator portion in the closer device shown in FIGS. 2 and 3. FIG. 4 is an enlarged view of the driving force detection device shown in FIGS. 2 and 3 in a switch OFF state. It is a figure in the switch ON state of the driving force detection apparatus shown in FIG. FIG. 9 is an operation explanatory diagram showing the relationship between the ON / OFF operation of each switch and the stroke of the striker (half latch state, full latch state) in the vehicle door lock device shown in FIGS.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of a vehicle door lock device according to the present invention. The vehicle door lock device 100 includes a latch mechanism 10 and a closer device 20 that are assembled to a right front door 201 of the vehicle. The driving force detection device 30 (see FIGS. 2 and 3) and the controller 40 (see FIG. 3) assembled to the vehicle body 202 are provided.

  As shown in FIGS. 1 to 5, the latch mechanism 10 can be engaged / disengaged with respect to the striker 203 fixed to the vehicle body 202, and can be engaged / disengaged with respect to the latch 11. The pole 12 that can maintain (hold) and release the engagement of the latch 11 with the striker 203 in the half-latch state (the state shown in FIG. 4) and the full-latch state (the state shown in FIG. 5), and a lift integrated with the pole 12 A lever (not shown) is provided. In the half latch state (see HALF in FIG. 9), the vehicle door 201 is in the half door state, and the latch switch SW1 that detects the rotation position of the latch 11 is maintained in the ON state, and the full latch state (FULL in FIG. 9). Reference) is set so that the door 201 of the vehicle is fully closed and the latch switch SW1 is maintained in the OFF state.

  Note that the latch switch SW1 is configured to be turned ON / OFF in conjunction with the operation of the latch 11, similarly to the latch switch described in JP2010-84321A (Patent Document 2). It is set to switch from the OFF state to the ON state before entering the half latch state, and to switch from the ON state to the OFF state before entering the full latch state (see FIG. 9). The detection signal (ON / OFF signal) of the latch switch SW1 is configured (electrically connected) to be input to the controller 40 through the wire harness 41 shown in FIG.

  As shown in FIGS. 4 and 5, the latch 11 has a first engagement portion (half latch claw) 11a and a second engagement portion (full latch claw) 11b, and the base plate 13 shown in FIG. The support shaft 14 is assembled so as to be rotatable. The latch 11 is biased toward an initial state (a state in which the striker 203 can be fitted in the latch groove 11c of the latch 11) by a return spring (not shown), and is held by a stopper (not shown) in the initial state. Has been.

  On the other hand, the pole 12 is assembled to the base plate 13 or the like so as to be rotatable at the shaft portion 12a, and can be engaged with and detached from the first engaging portion 11a or the second engaging portion 11b of the latch 11. 12b. Further, the pole 12 is urged by a return spring (not shown) toward the return state shown in FIGS. 4 and 5 (the state in which the latch 11 is held in the half latch state or the full latch state). Is held by a stopper (not shown).

  The fact that the pole 12 is in the return state is configured to be detected by the OFF state (OFF signal) of the pole switch SW2, as shown in FIG. For this reason, the half latch state (see HALF in FIG. 9) is detected by switching the ON state (ON signal) of the latch switch SW1 and the ON state (ON signal) of the pole switch SW2 to the OFF state (OFF signal). Is possible. In addition, the full latch state (see FULL in FIG. 9) can be detected by switching the latch switch SW1 from the OFF state (OFF signal) and the pole switch SW2 from the ON state (ON signal) to the OFF state (OFF signal). It is.

  The pole switch SW2 is turned on when the pole 12 is rotated and turned off when the pole 12 is returned to the initial state, similarly to the pole switch described in Japanese Patent Application Laid-Open No. 2010-84321 (Patent Document 2). It is configured as follows. Further, the detection signal (ON / OFF signal) of the pole switch SW2 is also configured (electrically connected) so as to be input to the controller 40 through the wire harness 41.

  A lift lever (not shown) integrated with the pole 12 is linked to an inside door handle 204 (see FIG. 1) provided inside the door 201 via an open link, an open lever or the like (not shown), and an open link, It is linked to an outside door handle 205 (see FIG. 1) provided outside the door 201 via an open lever or the like (not shown). The open link (not shown) is configured to be switched to an unlocked state or a locked state. In the unlocked state, the door opening operation of the inside door handle 204 and the outside door handle 205 is lifted integrally with the pole 12. It can be transmitted to a lever (not shown), and in the locked state, the door opening operation of the inside door handle 204 and the outside door handle 205 cannot be transmitted to a lift lever (not shown) integrated with the pole 12.

  As shown in FIGS. 2 to 6, the closer device 20 is connected to a latch lever 21 capable of moving the latch 11 in a half latch state to a full latch state, and the latch lever 21 via a drive cable 22. The drive lever 23 and an electric motor 24 capable of driving the drive lever 23 by forward rotation or reverse rotation are provided. The latch lever 21 is driven from the return position shown in FIG. 4 to the operating position shown in FIG. 5 by the forward rotation of the electric motor 24, and from the operating position shown in FIG. It is configured to be driven toward the return position shown in FIG.

  When the latch lever 21 returns to the return position, the latch lever 21 contacts the cushion 25 and engages with the return switch SW3, so that the return switch SW3 changes from the ON state (ON signal) to the OFF state (OFF signal). Return is detected by switching between the two. The detection signal (ON / OFF signal) of the return switch SW3 is also configured (electrically connected) to be input to the controller 40 through the wire harness 41.

  The drive lever 23 is composed of a planetary gear mechanism and a worm mechanism (these mechanisms are not shown, but substantially the same as the planetary gear mechanism and the worm mechanism described in Japanese Patent Laid-Open No. 2007-138532 (Patent Document 1)). The rotating shaft 23a (see FIG. 6) is integrally assembled with the output shaft of the electric motor 24 through the same structure. A cancel mechanism (part 1) between the ring gear of the planetary gear mechanism and the above-described open lever (not shown) that invalidates the operation of the closer device 20 by the door opening operation of the inside door handle 204 and the outside door handle 205. Although the cancel lever 26 which is a constituent member is shown in FIG. 6, the description is omitted because it has substantially the same configuration as the cancel mechanism described in Japanese Patent Laid-Open No. 2007-138532 (Patent Document 1). ) Is provided.

  As shown in FIGS. 2 and 3, the driving force detection device 30 is interposed in the driving cable 22 of the closer device 20 and is transmitted from the driving lever 23 to the latch lever 21 via the driving cable 22. Force (load) is detected. As shown in FIGS. 7 and 8, the driving force detection device 30 is an inner case that is assembled to an outer case 31 that constitutes a part of the outer tube 22a of the driving cable 22 so as to be movable along the longitudinal direction of the cable. 32, a latch lever side inner wire 33, a drive lever side inner wire 34, a spring 35, and a switch 36 are provided.

  The latch lever side inner wire 33 is a part of the inner wire 22b (latch lever side portion) of the drive cable 22, and is connected to the latch lever 21 at one end and provided with a drive lever side end 33a at the other end. It has been. The drive lever side inner wire 34 is a part (drive lever side portion) of the inner wire 22b in the drive cable 22, and is connected to the drive lever 23 at one end, and a latch lever side end 34a is provided at the other end. It has been. The spring 35 is a compression coil spring and is provided with a preload applied between the inner wires 33 and 34 so as to be elastically deformed by a predetermined amount when the driving force (wire tension) reaches a set value. Is set. The switch 36 is set to be turned on when the spring 35 is elastically deformed by a predetermined amount. The outer case 31 is configured to be divided into two parts, and a not-shown portion has a notch that can move the contact portion 36a of the switch 36 and the lever portion 36b of the switch 36 along the longitudinal direction of the cable. Is formed.

  The drive lever side end 33 a of the latch lever side inner wire 33 is fixed to the inner case 32. On the other hand, the latch lever side end 34a of the drive lever side inner wire 34 is assembled to the inner case 32 so as to be relatively movable. The spring 35 is interposed between the inner case 32 that moves integrally with the drive lever side end portion 33a of the latch lever side inner wire 33 and the latch lever side end portion 34a of the drive lever side inner wire 34 so as to be compressively deformable. Has been. A contact portion 36 a of the switch 36 is fixed to the inner case 32. On the other hand, the lever portion 36 b of the switch 36 is fixed to the latch lever side end portion 34 a of the drive lever side inner wire 34. The output signal (ON / OFF signal) of the switch 36 is also configured (electrically connected) so as to be input to the controller 40 through the wire harness 41.

  As described above, the controller (motor control device) 40 is electrically connected to the switches SW1, SW2, SW3, and 36 via the wire harness 41, and connected to the electric motor 24 with the wire harness 41 and the power supply line 42 ( (See FIGS. 3 and 6). The controller 40 controls normal rotation / reverse rotation / stop of the electric motor 24 based on signals (ON / OFF signals) from the respective switches SW1, SW2, SW3, 36, etc. When the door 201 is changed from the open state to the half door state, the electric motor 24 is rotated forward to move the latch 11 from the half latch state toward the full latch state, and the first control means After the start of execution, it is detected by the driving force detection device 30 within a set time (equivalent to Sa in FIG. 9 in terms of the stroke S of the striker 203) (at the initial stage when the latch 11 moves from the half latch state to the full latch state). When the driving force is greater than the set value and the switch 36 is turned ON, the electric motor 24 is reversely rotated to move the latch lever 21 to the initial state. It comprises a unit, the third control means for moving said first latch 11 by execution of the control means by reversely rotating the electric motor 24 after moving to the fully-latched state latch lever 21 to the initial state.

  When the switch 36 is not turned ON within the set time after the execution of the first control means, even if the switch 36 is turned ON after the set time, the second control means is not executed, and the first control The execution of the means is completed, and the latch 11 moves to the full latch state. The execution of the first control means is started on the basis of switching from the ON signal of the latch switch SW1 and the ON signal of the pole switch SW2 to the OFF signal, and OFF from the OFF signal of the latch switch SW1 and the ON signal of the pole switch SW2. Complete based on switching to signal. The execution of the third control means is started based on the completion of the execution of the first control means (switching from the OFF signal of the latch switch SW1 and the ON signal of the pole switch SW2 to the OFF signal), and the ON signal of the return switch SW3. Is completed based on switching from the OFF signal to the OFF signal. The execution of the second control means is completed based on switching of the return switch SW3 from the ON signal to the OFF signal.

  Therefore, in this embodiment, at the initial stage when the latch 11 moves from the half-latch state to the full-latch state due to the forward rotation of the electric motor 24, foreign matter is sandwiched between the door 201 and the vehicle body 202, and the driving force detection device 30 When the detected driving force becomes equal to or greater than the set value, the electric motor 24 is rotated reversely by the controller 40. For this reason, if foreign matter is caught between the door 201 and the vehicle body 202, the electric motor 24 can prevent the door 201 from being pulled into the fully closed state.

  By the way, in this embodiment, the door 201 and the vehicle body 202 are provided by the mechanical driving force detection device 30 that is interposed in the driving cable 22 of the closer device 20 and detects the driving force transmitted from the driving lever 23 to the latch lever 21. It is configured to detect that a foreign object has been sandwiched therebetween. For this reason, it is difficult for the detection of foreign object pinching to be affected by the ambient temperature or the installation of the door 201 to the vehicle body 202, and it is possible to detect pinching with high accuracy, and to avoid (prevent) the pinching of foreign objects accurately. Is possible.

  Further, the driving force detection device 30 of this embodiment includes a latch lever side inner wire 33 connected to the latch lever 21, a drive lever side inner wire 34 connected to the drive lever 23, and both the inner wires 33, 34. A spring 35 is provided between the spring 35 and elastically deformed by a predetermined amount when the driving force reaches a set value, and a switch 36 that operates when the spring 35 is elastically deformed by a predetermined amount. For this reason, for example, by changing the load characteristic (preload) at which the spring 35 starts elastic deformation, it is possible to cope with the worst-case door installation.

  In the above embodiment, the driving force detection device 30 is configured to include the spring 35 (compression coil spring). However, instead of the spring 35 described above, the driving lever side end of the latch lever side inner wire (33) ( 33a), one end is locked, the other end is locked to the latch lever side end (34a) of the drive lever side inner wire (34), and a pre-loaded tension coil spring is adopted. It is also possible to implement. In carrying out the present invention, the preload applied to the above-described compression coil spring or tension coil spring can be configured to be adjustable.

  Further, in the above-described embodiment, the driving is performed in the initial stage when the latch 11 moves from the half latch state to the full latch state (when the stroke S from the half latch state of the striker 203 (the state of FIG. 4) is within the set value Sa). When the driving force detected by the force detection device 30 exceeds the set value (when the switch 36 is turned on), the electric motor 24 is reversely rotated to move the latch lever 21 to the initial state. However, instead of reversing the electric motor 24 and moving the latch lever 21 to the initial state, for example, the electric motor (24) is stopped for a predetermined time, and then the electric motor (24) is rotated forward. It is also possible to set the latch (11) so as to move toward the full latch state.

DESCRIPTION OF SYMBOLS 10 ... Latch mechanism, 11 ... Latch, 11a ... 1st engaging part, 11b ... 2nd engaging part, 11c ... Latch groove, 12 ... Pole, 12a ... Shaft part, 12b ... Locking part, 20 ... Closer device, DESCRIPTION OF SYMBOLS 21 ... Latch lever, 22 ... Drive cable, 22a ... Outer tube, 22b ... Inner wire, 23 ... Drive lever, 23a ... Rotating shaft, 24 ... Electric motor, 25 ... Cushion, 26 ... Cancel lever, 30 ... Drive force detection apparatus 31 ... Outer case, 32 ... Inner case, 33 ... Latch lever side inner wire, 33a ... Drive lever side end, 34 ... Drive lever side inner wire, 34a ... Latch lever side end, 35 ... Spring, 36 ... Switch , 36a ... contact part, 36b ... lever part, 40 ... controller, 41 ... wire harness, 42 ... feeder line, 100 ... vehicle door lock Location, 201 ... door, 202 ... body, 203 ... striker, 204 ... inside door handle, 205 ... out side door handle, SW1 ... latch switch, SW2 ... pole switch, SW3 ... return switch

Claims (4)

A latch mechanism that includes a latch that engages with the striker, and a pole that can hold the latch in a half latch state and a full latch state;
A latch lever capable of moving a latch in a half latch state to a full latch state, a drive lever connected to the latch lever via a drive cable, and an electric motor capable of driving the drive lever by forward rotation or reverse rotation A closer device comprising:
A mechanical driving force detection device that detects a driving force that is interposed in the driving cable and transmitted from the driving lever to the latch lever;
Detected by the driving force detection device at an initial stage when the electric motor rotates the driving lever forward and rotates the latch lever forward via the driving cable to move the latch from the half latch state to the full latch state. A vehicle door lock device comprising control means for stopping or reversely rotating the electric motor when a driving force becomes a set value or more. The vehicle door lock device according to claim 1,
The driving force detecting device is provided between a latch lever side inner wire connected to the latch lever, a driving lever side inner wire connected to the driving lever, and the inner force between the inner wires. A vehicle door lock device comprising a spring that elastically deforms by a predetermined amount when it becomes, and a switch that operates when the spring elastically deforms by a predetermined amount. The vehicle door lock device according to claim 2,
The drive force detection device is a vehicle door lock device that is assembled to an inner case that is movably assembled to an outer case that forms part of the outer tube of the drive cable. In the vehicle door lock device according to claim 3,
The drive lever side end of the latch lever side inner wire is fixed to the inner case, the latch lever side end of the drive lever side inner wire is assembled to the inner case so as to be relatively movable, and the spring is Between the latch lever side end of the drive lever side inner wire and the inner case, the switch contact portion is fixed to the inner case, and the switch lever portion is connected to the inner side of the drive lever. A vehicle door lock device fixed to a latch lever side end of a wire.

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