JP2020084465A - Door lock device - Google Patents

Abstract

To reduce the weight of a door lock device without impairing the function and strength of the door lock device.SOLUTION: A door lock device DL for holding a vehicle door D in a closed state by locking a striker S provided in a vehicle body B includes: a latch 30; a ratchet 31; a driving part 11 for rotating the ratchet 31 from a lock position to an unlock position; and a memory lever 32 for releasably locking the ratchet 31 arranged in the unlock position. The latch 30 has a releasing part 44 for releasing the locking of the ratchet 31 by the memory lever 32 by a linkage with the memory lever 32 due to the rotation from a latch position to an unlatch position, and a core metal 90 of the latch 30 has through-holes 93, 94 provided between the rotation center of the latch 30 and the releasing part 44.SELECTED DRAWING: Figure 2

Description

The present invention relates to a door lock device that holds a vehicle door in a closed state.

A door lock device that holds a vehicle door in a closed state includes a latch that engages with a striker provided on a vehicle body, a ratchet that engages with a latch that engages with the striker, and can hold the door in a closed state, and a latch and a ratchet. And a drive unit that rotates the ratchet in a direction in which the ratchet is disengaged. When the drive is actuated to disengage the latch and ratchet, the door is slightly opened by the repulsive force of the weatherstrip. However, when the door is insufficiently opened due to the inclination of the vehicle, the reduction of the repulsive force of the weather strip, and the like, the latch and the ratchet may be re-engaged, and the door may not be opened.

The door latch device described in Patent Document 1 further includes a memory lever that locks the ratchet rotated by the drive unit so that the ratchet cannot engage with the latch, and the latch is a release unit that releases the lock of the ratchet by the memory lever. Have. Since the ratchet is held by the memory lever, the latch and the ratchet are prevented from re-engaging before the door opening operation even if the door is not opened sufficiently. Then, as the latch is rotated along with the door opening operation, the latch release portion is linked to the memory lever, and the ratchet locking by the memory lever is released.

JP, 2016-14235, A

There is a demand for downsizing and weight reduction of door latch devices. In the door latch device described in Patent Document 1, from the viewpoint of miniaturization, the memory lever has a third shaft different from the first shaft that rotatably supports the latch and the second shaft that rotatably supports the ratchet. It is supported and is coplanar with the latch and ratchet. The latch having a release portion linked to the memory lever extends on the memory lever side. The latch typically includes a cored bar made of a metal material, and there is a concern that the weight of the device will increase as the latch is extended to the memory lever side.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce the weight of a door lock device without impairing the function and strength of the door lock device.

A door lock device according to an aspect of the present invention is a door lock device that holds a vehicle door in a closed state by locking a striker provided in a vehicle body, and a latch position that engages with the striker, A latch that rotates between an unlocked position, a lock position that engages with the latch that is disposed at the latched position, and a ratchet that rotates between an unlocked position, and the ratchet from the locked position to the ratchet. A latch for releasing the ratchet arranged in the unlock position so that the ratchet arranged in the unlock position can be released; and the latch is directed from the latch position to the unlock position. The latch has a releasing portion that releases the locking of the ratchet by the memory lever by linking with the memory lever in association with the rotation, and the core metal of the latch is the rotation center of the latch and the releasing portion. And one or more through-holes provided between and.

According to the present invention, the weight of the door lock device can be reduced without impairing the function and strength of the door lock device.

It is a perspective view of an example of a vehicle provided with a door lock device for explaining the embodiment of the present invention. It is an exploded perspective view of a door lock device for explaining the embodiment of the present invention. FIG. 3 is a plan view of a latch mechanism of the door lock device of FIG. 2. FIG. 3 is a perspective view of a drive unit and a detection unit of the door lock device of FIG. 2. FIG. 3 is a perspective view of a sensor assembly of the door lock device of FIG. 2. FIG. 6 is an enlarged plan view showing a main part of the sensor assembly of FIG. 5. It is the VII-VII sectional view taken on the line of FIG. It is a schematic diagram which shows operation|movement of the door lock apparatus of FIG. It is a schematic diagram which shows operation|movement of the door lock apparatus of FIG. It is a schematic diagram which shows operation|movement of the door lock apparatus of FIG. It is a schematic diagram which shows operation|movement of the door lock apparatus of FIG. It is a schematic diagram which shows operation|movement of the door lock apparatus of FIG. FIG. 4 is a plan view of a cored bar of the latch of FIG. 3. It is the XIV-XIV sectional view taken on the line of FIG.

FIG. 1 shows an example of a vehicle equipped with a door lock device for explaining an embodiment of the present invention.

The door lock device DL holds the vehicle door D in a closed state by locking a striker S provided on the vehicle body B. In the example shown in FIG. 1, the vehicle door D is a back door that is vertically rotated with respect to the vehicle body B, but the door lock device DL is a side that is horizontally rotated with respect to the vehicle body B. It may be applied to a door, or may be applied to a sliding door that is moved along the vehicle body B in the front-rear direction.

FIG. 2 is an exploded view of the door lock device DL.

The door lock device DL includes a latch mechanism 10 that locks the striker S, a drive unit 11 that drives the latch mechanism 10, a detection unit 12 that detects the operation of the latch mechanism 10 that is driven by the drive unit 11, and these latches. A mechanism 13, a drive unit 11, and a housing 13 that houses the detection unit 12 are provided.

The housing 13 has a metal base 20 fixed to the vehicle door D, a case 21 assembled to the base 20, and a cover assembled to the base 20 and the case 21 with an accommodation space between the base 20 and the case 21. 22 and 22. The case 21 and the cover 22 are made of resin, for example. The base 20 is provided with a striker entry groove 23 into which the striker S enters when the vehicle door D is closed, and the latch mechanism 10 that locks the striker S is installed in the base 20. The drive unit 11 that drives the latch mechanism 10 is installed in the case 21.

FIG. 3 shows the latch mechanism 10.

The latch mechanism 10 includes a latch 30 that engages with the striker S, a ratchet 31 that engages with the latch 30, and a memory lever 32 that engages with the ratchet 31.

The latch 30 is rotatable between a latched position that engages with the striker S and an unlatched position. A latch shaft 33 that rotatably supports the latch 30 is provided on the side of the striker entry groove 23. The latch 30 is biased in the direction of arrow A from the latch position to the unlatch position by the torsion spring 34.

The latch 30 has a striker engagement groove 35. When the latch 30 is in the unlatch position, the entrance of the striker engagement groove 35 is arranged to overlap the entrance of the striker entry groove 23, and the striker S can enter both the striker entry groove 23 and the striker engagement groove 35. It is possible to escape from both grooves. On the other hand, when the latch 30 is in the latched position, the entrance of the striker engagement groove 35 is arranged apart from the entrance of the striker entry groove 23, and the striker entry groove 23 and the striker engagement groove 35 intersect. The striker S that has entered the striker entry groove 23 and the striker engagement groove 35 cannot exit from both grooves, and the latch 30 and the striker S engage with each other.

The ratchet 31 is rotatable between a locked position that engages with the latch 30 and an unlocked position. A ratchet shaft 36 that rotatably supports the ratchet 31 is provided on the opposite side of the latch shaft 33 with the striker entry groove 23 interposed therebetween. The ratchet 31 is biased in the arrow B direction from the unlock position to the lock position by the torsion spring 37.

The ratchet 31 has a locking portion 38, and the ratchet 31 biased toward the lock position slides the locking portion 38 onto the outer periphery of the latch 30. When the latch 30 is rotated from the unlatch position in the direction opposite to the arrow A direction and is arranged at the latch position, the locking portion 38 engages with the engaging portion 39 provided on the outer periphery of the latch 30. By the engagement of the locking portion 38 and the engaging portion 39, the latch 30 is prevented from rotating in the arrow A direction from the latched position to the unlatched position, and the latch 30 is held at the latched position. As a result, the engagement between the latch 30 and the striker S is maintained, and the vehicle door D is held in the closed state.

The memory lever 32 is rotatable between a locking position for locking the ratchet 31 and a locking release position. The memory lever shaft 40 rotatably supporting the memory lever 32 is provided on the side opposite to the entrance side of the striker entry groove 23 with the straight line L connecting the latch shaft 33 and the ratchet shaft 36 interposed therebetween. The reference numeral 32 is arranged on the same side as the latch 30 and the ratchet 31 on the back side of the striker entry groove 23 with respect to the latch 30 and the ratchet 31. The memory lever 32 is urged by the torsion spring 41 in the arrow C direction from the unlocked position toward the locked position.

The memory lever 32 has a locking portion 42, and the memory lever 32 biased toward the locking position slides the locking portion 42 onto the outer circumference of the ratchet 31. When the ratchet 31 is rotated from the locked position in the direction opposite to the arrow B direction and is placed at the unlocked position, the engaging portion 42 engages with the engaging portion 43 provided on the outer periphery of the ratchet 31. .. The engagement between the locking portion 42 and the engaging portion 43 prevents the ratchet 31 from rotating in the arrow B direction from the unlock position to the lock position, and the ratchet 31 is held at the unlock position.

The latch 30 releases the locking of the ratchet 31 by the memory lever 32. The latch 30 has a release portion 44 that engages with the memory lever 32. When the latch 30 is rotated from the latched position in the direction of arrow A and moved to the unlatched position, the release portion 44 contacts the memory lever 32 and presses the memory lever 32. As a result, the memory lever 32 is rotated from the locking position in the direction opposite to the arrow C direction and is arranged at the locking release position. Then, by disposing the memory lever 32 in the unlocked position, the engagement between the locking portion 42 and the engaging portion 43 is released, and the ratchet 31 moves in the direction of arrow B from the unlocked position toward the locked position. It becomes rotatable.

FIG. 4 shows a drive unit 11 that drives the latch mechanism 10.

The drive unit 11 includes a motor 50 that is a drive source, a worm wheel 52 that meshes with a worm 51 that is attached to the output shaft of the motor 50, and an open lever 53 that is driven by the worm wheel 52.

The motor 50 is controlled by a control unit (not shown), and the control unit operates the motor 50 based on, for example, an operation of a door lock release button provided near the driver's seat. The worm wheel 52 is rotated by the motor 50 once in the direction of arrow D. The worm wheel 52 has a cam 54, and the open lever 53 has a cam follower 55. The cam 54 is rotated integrally with the worm wheel 52, and the cam follower 55 is pressed by the cam 54, whereby the open lever 53 is rotated in the arrow E direction.

The open lever 53 has a pressing portion 56, and the pressing portion 56 engages with the ratchet 31 of the latch mechanism 10. The ratchet 31 has a pressed portion 57. When the open lever 53 is rotated in the arrow E direction, the pressing portion 56 and the pressed portion 57 are engaged with each other, and the pressed portion 57 is pressed by the pressing portion 56. As a result, the ratchet 31 is rotated in the arrow F direction from the locked position to the unlocked position.

Next, the detector 12 that detects the operation of the latch mechanism 10 will be described.

The detection unit 12 has a detection lever 60 and a sensor 61.

The detection lever 60 is rotatably attached to the base 20. The detection lever 60 has a pressed portion 62, and the pressed portion 62 engages with the ratchet 31 of the latch mechanism 10. The ratchet 31 has a pressing portion 63. When the ratchet 31 is rotated in the arrow F direction from the locked position to the unlocked position, the pressed portion 62 and the pressing portion 63 are engaged with each other, and the pressed portion 62 is pressed by the pressing portion 63. As a result, the detection lever 60 is rotated in the arrow G direction.

Further, the detection lever 60 has a sensor engaging portion 64. The sensor engagement portion 64 is formed in an arc shape around the rotation axis of the detection lever 60. The sensor 61 is a tact switch, and its switch button is installed on the track of the sensor engaging portion 64. When the detection lever 60 is rotated in the direction of arrow G, the sensor engagement portion 64 engages with the switch button of the sensor 61, and the switch button is pushed by the sensor engagement portion 64. As a result, the sensor 61 is turned on. The sensor 61 is not limited to the tact switch and may be an optical switch such as a photo interrupter. The detection signal output by the turned-on sensor 61 is input to a control unit (not shown), and the control unit detects the operation of the latch mechanism 10 based on the input detection signal, for example, an indicator of an instrument panel or a room. Turn on the lamp etc.

The sensor 61 constitutes a sensor assembly 70 (see FIG. 2) together with a connector or the like that provides a connection between the door lock device DL and the control unit, and is assembled to the door lock device DL in the form of the sensor assembly 70. Thereby, the manufacturing efficiency of the door lock device DL is improved.

5-7 show a sensor assembly 70.

The sensor assembly 70 includes a connector 71, a plurality of electric wires 72, and a sensor base 73.

The connector 71 includes two first connection conductors 74 electrically connected to the motor 50, two second connection conductors 75 electrically connected to the sensor 61, and the first connection conductor 74 and the second connection conductor 75. The connector housing 76 holds the connection conductor 75. The connector housing 76 is made of an insulating resin material, and the first connecting conductor 74 and the second connecting conductor 75 are fitted in the connector housing 76. The case 21 of the door lock device DL is provided with a rectangular cutout portion 24, and the connector housing 76 is provided with a mounting portion 77. The mounting portion 77 is inserted into the cutout portion 24, and the connector 71 is assembled to the case 21.

In the example shown in FIG. 5, the second connecting conductor 75 is connected to the terminal portion 78 of the sensor 61 via the electric wire 72. The second connecting conductor 75 and the electric wire 72, and the electric wire 72 and the terminal portion 78 are connected by resistance welding, but they are not limited to resistance welding and may be connected by soldering or the like. The second connecting conductor 75 may be directly connected to the terminal portion 78 of the sensor 61, and even in the case of being directly connected, the second connecting conductor 75 may be connected by resistance welding, soldering, or the like.

The sensor base 73 holds the sensor 61. The sensor base 73 is attached to the cover 22 (see FIG. 2) that constitutes the housing 13 of the door lock device DL, and is provided between the base 20 and the cover 22 together with the latch mechanism 10 (latch 30, ratchet 31, and memory lever 32). It is housed in the housing space formed in. The sensor 61 held by the sensor base 73 is installed on the track of the sensor engaging portion 64 of the detection lever 60 assembled to the base 20.

As shown in FIGS. 6 and 7, the sensor base 73 is made of an insulating resin material, and has a first recess 79 for fitting and holding the sensor 61, and a second recess 80 communicating with the first recess 79. Have. A connecting portion 81 between the electric wire 72 and the terminal portion 78 of the sensor 61 is housed in the second recess 80. The second recess 80 accommodating the connecting portion 81 is filled with a waterproof material 82 made of a photocurable resin material, and the connecting portion 81 is covered with the sensor base 73 and the waterproof material 82.

The bottom wall of the second recess 80 is formed with a through hole 83 that faces the connecting portion 81 housed in the second recess 80. One electrode of the pair of electrodes for resistance welding the connecting portion 81 is pressed against the connecting portion 81 through the through hole 83. The through hole 83 can also be used as an irradiation window for irradiating the photocurable resin material forming the waterproof material 82 with curing light. When the photo-curable resin material is filled in the second recess 80, the through hole 83 is closed by a jig (not shown). If the jig is transparent or semi-transparent to the curing light, the curing light can be irradiated from the back side of the sensor base 73 through the through hole 83, and the curing time can be shortened.

The photo-curable resin material forming the waterproof material 82 is preferably a UV-curable resin material from the viewpoint of suppressing cracking in a low temperature environment, generation of bubbles in a high temperature environment, and reduction in insulation due to water absorption. Is. Then, from the viewpoint of enhancing productivity, the curing time of the ultraviolet curable resin material is preferably 3 seconds or more under the conditions of the temperature of 25° C., the illuminance of 1000 mW/cm ² , and the irradiation amount of ultraviolet light of 3000 to 20000 mJ/cm ^2. It is 20 seconds or less, more preferably 5 seconds or more and 15 seconds or less.

An accommodation space between the base 20 that accommodates the latch mechanism 10 and the cover 22 is open at least at the entrance portion of the striker entry groove 23, and can be flooded due to heavy rain, high-pressure washing, or the like. When the accommodation space between the base 20 and the cover 22 is flooded, the sensor 61 accommodated in this accommodation space is also exposed to water, but the connection portion 81 is covered with the sensor base 73 and the waterproof material 82. Therefore, the occurrence of a short circuit between the terminals of the sensor 61 is suppressed.

In the example shown in FIGS. 6 and 7, two second recesses 80 are provided for the two connection parts 81, and the connection parts 81 are housed in the individual second recesses 80. In other words, the partition wall 84 is provided between the two connecting portions 81. As a result, the insulation between the terminals of the sensor 61 becomes more reliable.

8 to 12 show the operation of the door lock device DL.

In FIG. 8, the latch 30 is located in the latched position and the ratchet 31 is located in the locked position. The engagement portion 39 of the latch 30 and the locking portion 38 of the ratchet 31 are engaged, the engagement between the latch 30 and the striker S is maintained, and the vehicle door D is held in the closed state. Further, the memory lever 32 is arranged at the lock release position. The ratchet 31 is rotated in the arrow F direction from the locked position to the unlocked position by the drive unit 11.

As shown in FIG. 9, when the ratchet 31 is placed in the unlocked position, the ratchet 31 disengages from the engagement portion 39 of the latch 30 and the engagement portion 38 of the ratchet 31, and the latch 30 is released from the latch 30. It is possible to rotate in the direction of arrow A from the position toward the unlatched position. When the ratchet 31 is placed in the unlocked position, the memory lever 32 is rotated in the direction of arrow C from the unlocked position to the locked position by the bias of the torsion spring 41 (see FIG. 3). It When the memory lever 32 is placed in the locking position, the locking portion 42 of the memory lever 32 and the engaging portion 43 of the ratchet 31 engage with each other, and the ratchet 31 is held in the unlocked position. As a result, the ratchet 31 is moved to the lock position by the bias of the torsion spring 37 (see FIG. 3), and the latch 30 and the ratchet 31 are prevented from re-engaging before the door opening operation.

When the ratchet 31 is rotated in the arrow F direction from the locked position to the unlocked position, the detection lever 60 is rotated in the arrow G direction. With the rotation of the detection lever 60, the switch button of the sensor 61 is pushed by the sensor engagement portion 64 of the detection lever 60, and the sensor 61 is turned on. The detection signal output by the turned-on sensor 61 is input to the control unit, and the unlocking operation of the ratchet 31 is detected by the control unit.

As shown in FIG. 10, the latch 30 is rotated in the arrow A direction from the latched position to the unlatched position in response to the door opening operation. With the rotation of the latch 30, the release portion 44 of the latch 30 contacts the memory lever 32 and presses the memory lever 32.

In this example, the detection lever 60 has the second pressed portion 65 that engages with the latch 30, and the latch 30 moves to the second position in response to the rotation in the arrow A direction from the latch position to the unlatch position. It has a pressing portion 66 that presses the pressed portion 65. When the latch 30 is rotated in the arrow A direction from the latch position to the unlatch position, the detection lever 60 is further rotated in the arrow G direction. With the rotation of the detection lever 60, the switch button of the sensor 61 is pushed by the sensor engagement portion 64 of the detection lever 60, and the sensor 61 is turned on. Therefore, it is possible to detect the unlocking operation of the latch 30 instead of the unlocking operation of the ratchet 31 shown in FIG.

As shown in FIG. 11, as the latch 30 further rotates in response to the door opening operation, the memory lever 32 pressed by the release portion 44 of the latch 30 moves from the locking position to the locking release position by an arrow H. Is rotated in the direction. By disposing the memory lever 32 in the locking release position, the engagement portion 43 of the ratchet 31 and the locking portion 42 of the memory lever 32 are disengaged, and the ratchet 31 moves from the unlocked position to the locked position. It becomes possible to rotate in the direction of the arrow B. The striker S has already come out of the striker engagement groove 35 of the latch 30 at the time when the memory lever 32 is placed in the unlocked position.

Then, as shown in FIG. 12, the ratchet 31 is moved to the lock position by the bias of the torsion spring 37 (see FIG. 3 ). After that, when the vehicle door D is closed, the striker S enters the striker entry groove 23 and the striker engagement groove 35, and the latch 30 is pressed by the striker S and moved to the latch position. Then, the ratchet 31 arranged at the lock position is engaged with the latch 30 arranged at the latch position, and the vehicle door D is held in the closed state.

13 and 14 show the latch 30.

The latch 30 includes a cored bar 90 and a cover 91 that covers the cored bar 90. The cover 91 is made of a resin material and is integrally formed with the core metal 90 by insert molding.

The cored bar 90 includes a support portion supported by the latch shaft 33 in the latch 30, a striker engagement groove 35 engaged with the striker S, an engagement portion 39 engaged with the locking portion 38 of the ratchet 31, and the memory lever 32. The skeleton of the release portion 44 that engages with the core metal 90 is formed, and a shaft hole 92 is formed in the cored bar 90 at a location corresponding to the support portion.

Here, the memory lever 32 is arranged on the same plane as the latch 30 and the ratchet 31 on the back side of the striker entry groove 23 with respect to the latch 30 and the ratchet 31. The cored bar 90 that forms the skeleton of the release portion 44 that engages with the memory lever 32 is extended to the back side of the striker entry groove 23 as compared with the case where the release portion 44 is not provided. One or more through-holes are formed in the cored bar 90 in order to suppress an increase in weight of the cored bar 90 due to extension.

In the example shown in FIG. 13, the cored bar 90 has a first through hole 93 and a second through hole 94, and the first through hole 93 and the second through hole 94 serve as the rotation center of the latch 30. It is provided between the shaft hole 92 and the release portion 44. The weight of the cored bar 90 can be reduced by the first through hole 93 and the second through hole 94. The number of through holes is not limited to two, and three or more through holes may be provided.

As shown in FIG. 14, the inner peripheral surface of the shaft hole 92 of the cored bar 90 is covered with the cover 91, and the inner peripheral surface of the first through hole 93 is also covered with the cover 91. However, while both ends of the shaft hole 92 through which the latch shaft 33 is inserted are open, one end of the first through hole 93 is closed by the cover 91. Although illustration is omitted, the inner peripheral surface of the second through hole 94 is covered with the cover 91, and one end of the second through hole 94 is closed with the cover 91. Since one end of each of the first through hole 93 and the second through hole 94 is closed by the cover 91, the latch shaft 33 can be inserted only into the shaft hole 92, and erroneous assembly is prevented.

As described above, the door lock device disclosed in the present specification is a door lock device that holds a vehicle door in a closed state by locking a striker provided in a vehicle body, and A latch that rotates between an engaging latch position and an unlocking position, a ratchet that rotates between an engaging position and a locking position that engages with the latch, and The latch includes a drive unit that rotates the ratchet from the lock position toward the unlock position, and a memory lever that releasably locks the ratchet arranged at the unlock position. The latch has a release portion that releases the locking of the ratchet by the memory lever by linking with the memory lever with the rotation from the position to the unlatch position. It has one or more through holes provided between the center of rotation and the release part.

In the door lock device disclosed in the present specification, the latch has a cover made of a resin material integrally molded with the core metal, and one end of the through hole is closed by the cover. Has been.

Further, the sensor assembly disclosed in the present specification is configured to drive a latch that engages with a striker provided on a vehicle body, a ratchet that engages with the latch engaged with the striker, and the ratchet. A sensor assembly that is used in a door lock device that includes a drive unit that releases the engagement between the ratchet and the latch, and a case that houses the drive unit, and that includes a sensor that detects the operation of the latch or the ratchet. A plurality of terminal portions of the sensor is directly or via a plurality of electric wires to hold a plurality of connection conductors, a connector assembled in the case, a sensor base holding the sensor, A waterproof material made of a photocurable resin that covers the connection portion between the terminal portion of the sensor and the connection conductor or the electric wire together with the sensor base.

In the sensor assembly disclosed in the present specification, the door lock device includes a cover that accommodates the latch and the ratchet, and the sensor base is assembled to the cover.

Further, in the sensor assembly disclosed in the present specification, the connection portion is resistance-welded, and the sensor base has a recess that accommodates the connection portion and is filled with the waterproof material. The bottom wall of the recess has a through hole that faces the connecting portion.

Further, in the sensor assembly disclosed in the present specification, the recess is provided for each of the connection parts.

In the sensor assembly disclosed in the present specification, the waterproof material has a curing time of 3 seconds or more and 20 seconds or more under irradiation conditions of a temperature of 25° C., an illuminance of 1000 mW/cm ² , and an integrated light amount of 3000 to 20000 mJ/cm ^2. It consists of the following UV curable resins.

Further, the door lock device disclosed in this specification is assembled with the sensor assembly.

10 Latch mechanism 11 Drive part 12 Detecting part 13 Housing 20 Base 21 Case 22 Cover 23 Striker entry groove 24 Notch part 30 Latch 31 Ratchet 32 Memory lever 33 Latch shaft 35 Strikeer engagement groove 36 Ratchet shaft 38 Engagement part 39 Engagement Part 40 Memory lever shaft 42 Engaging part 43 Engaging part 44 Disengaging part 50 Motor 51 Worm 52 Worm wheel 53 Open lever 54 Cam 55 Cam follower 56 Pressing part 57 Pressed part 60 Detection lever 61 Sensor 62 Pressed part 63 Pressed part 64 Sensor engagement part 70 Sensor assembly 71 Connector 72 Electric wire 73 Sensor base 74 First connection conductor 75 Second connection conductor 76 Connector housing 77 Mounting part 78 Terminal part 79 First recess 80 Second recess 81 Connection part 82 Waterproof material 83 Penetration Hole 84 Partition wall 90 Core metal 91 Cover body 92 Shaft hole 93 First through hole 94 Second through hole B Vehicle body D Vehicle door DL Door lock device S striker

Claims (2)

A door lock device for holding a vehicle door in a closed state by locking a striker provided on a vehicle body,
A latch that engages with the striker and a latch that rotates between an unlatched position;
A ratchet that rotates between a locked position that engages with the latch that is disposed in the latched position and an unlocked position;
A drive unit for rotating the ratchet from the lock position toward the unlock position,
A memory lever that releasably locks the ratchet arranged at the unlock position,
Equipped with
The latch has a release portion that releases the locking of the ratchet by the memory lever by linking with the memory lever in accordance with the rotation from the latch position to the unlatch position,
The door lock device according to claim 1, wherein the core metal of the latch has one or more through holes provided between a rotation center of the latch and the release portion. The door lock device according to claim 1,
The latch has a cover made of a resin material integrally formed with the core metal,
A door lock device in which one end of the through hole is closed by the cover.

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