JP3873297B2 - Door lock device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a door lock device, and detects detection of a latched state (engaged state between a striker and a latch) and an unlatched state (unengaged state between a striker and a latch) from the operation of a latch mechanism. Concerning structure.
[0002]
[Prior art]
Conventionally, as this type of door lock device, one disclosed in JP-A-56-75211 is known. This includes a latch that engages and disengages with the striker, a latch mechanism that includes at least a pole that engages and disengages with the latch, and that is operated by the first operating means inside and outside the room, and a courtesy switch that detects the operation of the latch mechanism. is there.
[0003]
In this conventional apparatus, the latch is formed with a latch cam that can be directly engaged with and disengaged from the switch portion of the courtesy switch, and the latch mechanism is turned on and off by engaging and disengaging the latch cam and the switch portion. Thus, the latching state and the unlatching state of the door lock device are detected.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional apparatus, the switch part of the courtesy switch and the latch cam are directly engaged and disengaged, so that the courtesy switch is disposed in the vicinity of the latch. Further, since the latch must be engaged with and disengaged from the striker, it must be exposed to the outside. Therefore, the courtesy switch arranged near the latch is also exposed to the outside through the latch. As a result, the courtesy switch is easily affected by water and dust entering from the engagement / disengagement site between the striker and the latch, and grease of the latch mechanism, which may cause malfunction.
[0005]
Therefore, this invention makes it the technical subject to reduce the malfunctioning of a courtesy switch.
[0006]
[Means for Solving the Problems]
The technical means taken in the present invention in order to solve the above technical problem includes at least a latch (41) that engages and disengages with a striker and a pole (42) that engages and disengages with the latch (41). In a door lock device (2) having a latch mechanism (4) operated by first operating means (771, 772) and a courtesy switch (8) for detecting the operation of the latch mechanism (4), the latch (41 ) And a cam lever (82) disposed between the latch cam (81) and the courtesy switch (8). An arm portion (821) that can come into contact with the latch cam (81) that rotates in one direction integrally with the latch (41) that engages with the striker, and the latch that disengages from the striker ( 1) is provided with a protrusion (822) that can be brought into contact with the latch cam (81) that rotates in the other direction. The latch cam (81) includes the arm portion (82) of the cam lever (82). 821) is provided with a cam portion (811) capable of abutting against the projection 821, and a projection (812) capable of abutting against the projection (822) of the cam lever (82) .
[0007]
More preferably, the cam lever is always urged in the engagement direction with the latch cam and has a biasing member that can be engaged with the switch portion of the courtesy switch.
[0008]
More preferably, it has an engagement protrusion formed on the latch cam and capable of contacting the cam lever when the latch is rotated in the direction of disengagement with the striker.
[0009]
More preferably, a locking member that is actuated by the second operating means inside and outside to disengage the linkage between the first operating means and the pole, and a disengaged state of the latch formed on the locking member and the striker And an engaging portion that abuts on the latch cam and restricts the operation of the locking member in the direction of releasing the linkage between the first operating means and the pawl.
[0010]
More preferably, the first recess for receiving the latch mechanism, the second recess different from the first recess for storing the courtesy switch, and the support for supporting the cam lever between the first recess and the second recess. It is good to have a housing with a part.
[0011]
More preferably, a locking member supported on the housing and actuated by a second operating means indoors and outdoors to disengage the linkage between the first operating means and the pole, and in the second recess of the housing More preferably, it has a locking actuator arranged to actuate the locking member, and more preferably, the latch formed on the housing, the latch cam, and a spring for urging the latch in the disengagement direction with the striker are supported. It is good to have the bearing part to do.
[0012]
[Action]
According to the above technical means, the operation of the latch mechanism is detected when the switch part of the courtesy switch and the latch cam are engaged / disengaged via the cam lever and the courtesy switch is turned on / off, thereby detecting the latch of the door lock device. A state and an unlatched state can be detected. This makes it possible to dispose the courtesy switch away from the latch. As a result, the courtesy switch can be isolated from the latch, and exposure to the outside through the latch of the courtesy switch can be suppressed. Therefore, the influence of water entering from the outside, dust, grease of the latch mechanism, etc. can be mitigated, and malfunction of the courtesy switch can be reduced.
[0013]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0014]
First, the basic configuration of the door lock device 2 will be described.
[0015]
As shown in FIGS. 1 to 4, the door lock device 2 disposed in the driver's seat side door 1 (shown in FIG. 6) of the vehicle includes a housing 3, a latch mechanism 4, a locking actuator 5, and a double lock actuator 6. The link mechanism 7 is mainly configured.
[0016]
As shown in FIGS. 3 and 4, the housing 3 is made of resin, and extends in the vertical direction of the door 1, and is a surface on the rear side of the door 1 in the front-rear direction (attachment to the door 1). An opening recess 31 is formed on the lower surface of the door 1 in the vertical direction of the door 1, and an opening recess positioned on the upper side of the door 1 in the vertical direction is formed on the rear surface of the door 1 in the front-rear direction. 32 is formed. The opening recess 31 is closed by a metal plate 33 to define an internal space 31a. The opening recess 32 is watertightly closed by a resin lid 34 via a seal member, thereby defining a substantially sealed internal space 32a. Further, a tunnel portion 36 that defines a passage 36 a communicating with the opening recess 31 is formed on the surface of the housing 2 so as to protrude to the back surface side. As shown in FIG. 5, the lid 34 has a key switch for detecting the operation of the second locking lever of the locking member of the locking member of the link mechanism 7 to be described later and the latching switch 8 of the latch mechanism 4 to be described later. 9 is supported. The courtesy switch 8 is disposed in the opening recess 32, and is accommodated in an internal space 32b formed separately from the internal space 32a by a flange wall 3a formed in the housing 3 (shown in FIG. 4). The key switch 9 is disposed in a recess 341 formed in the lid 34 that is closed by the metal plate 39. The lid 34 is integrally formed with a connector portion 342 (shown in FIGS. 1 and 2). The connector portion 342 includes a motor switch 51, a key switch 9, and a motor 51 of a locking actuator 5 described later. The motor 61 of the double lock actuator 6 is electrically connected to the lid 34 via the substrate 10 insert-molded.
[0017]
As shown in FIG. 3, the latch mechanism 4 is operated by an indoor / outdoor handle, which will be described later, and is disposed in the opening recess 31 and is accommodated in the internal space 31 a, that is, in the housing 3. . The latch mechanism 4 mainly includes a latch 41 and a pole 42. The latch 41 is rotatably supported by a latch pin 43 that is caulked and fixed to the metal plate 33. The pole 42 is rotatably supported by a pole pin 44 that is caulked and fixed to the metal plate 33. The latch 41 can be engaged with a striker (not shown) fixed to a vehicle body (not shown), and the pole 42 can be engaged with the latch 42. The door lock device 2 is in a latched state in which the door 1 is closed with respect to the vehicle body by engaging the striker entering the passage 36a by the closing operation and engaging the pawl 42 with the latch 41 (FIG. 3). Further, by rotating the pawl 42 to release the engagement with the latch 41 and releasing the engagement between the striker and the latch 41 by retracting the striker from the passage 36a by the opening operation of the door 1, An unlatched state of the door lock device 2 in which the door 1 is opened with respect to the vehicle body is obtained. Note that the latch 41 is always urged to rotate in a direction to release the engagement with the striker by a spring 45 of a support structure described later, and the pole 42 is driven by a spring (not shown) in the opening recess 31. It is always urged to rotate in the direction of engagement with the latch 41.
[0018]
As shown in FIG. 4, the locking actuator 5 operates a locking member of the link mechanism 7 to be described later, and is disposed in the opening recess 32 and accommodated in the internal space 32 a, that is, in the housing 3. ing. The locking actuator 5 includes a motor 51, a worm gear 52, a wheel gear 53 that can return to an initial position (neutral position), and a first output member 54 and a second output member 55 that can return to the initial position together with the wheel gear 53. ing.
[0019]
As shown in FIG. 4, the double lock actuator 6 operates a double lock member of the link mechanism 7 described later, and is disposed in the opening recess 32 in the same manner as the locking actuator, and has an internal space 32a. That is, it is accommodated in the housing 3. The double lock actuator 6 includes a motor 61, a worm gear 62, and an output member 63.
[0020]
As shown in FIGS. 1 and 2, the link mechanism 7 is disposed on the back side of the housing 3. The link mechanism 7 includes a locking member 71, a double lock member 72, and an open member 73 arranged in the same plane. The locking member 71 engages / disengages the linkage between an indoor / outdoor handle, which will be described later, and the pole 42 of the link mechanism 4, and is supported by the lid 34, and includes a first locking lever 711 and a second locking member. The lever 712 is configured. The first locking lever 711 is fixed to a portion of the shaft portion 55 a of the second output member 55 of the locking actuator 5 that protrudes toward the back side of the housing 3 so as to rotate integrally with the second output member 55. The first locking lever 711 is a locking knob 75 (FIG. 6) provided in the interior of the door 1 via a slide bush described later of the double lock member 72, an idle swing lever described later of the double lock member 72, and an indoor lock linkage lever 74. Is connected to The second locking lever 712 is supported so as to be rotatable around a shaft portion 55a (a protruding portion). The second locking lever 712 is linked to a locking key cylinder 76 provided outside the door 1 via an outdoor lock linkage lever 75.
[0021]
The double lock member 72 engages / disengages the linkage between the locking knob 75 and the locking member 71, and is supported by the lid 34. The double lock member 72 includes an idle swing lever 721, a double lock lever 722, and a slide bush 723. It is configured. The idling lever 721 is separate from the indoor lock linking lever 74 and is rotatably supported by the lid 34 around the shaft portion 55a, and is further rotated by the rotation of the indoor lock linking lever 74. Is engaged with the indoor lock linkage lever 74. The double lock lever 722 is fixed to the portion of the shaft portion 63 a of the output member 63 of the double lock actuator 6 that protrudes to the back side of the housing 3 so as to rotate integrally with the output member 63. The slide bush 723 is slidably supported by the first locking lever 711 of the locking member 71, and is detachable from the idle swing lever 711.
[0022]
The open member 73 operates the latch mechanism 4 and is supported by a bracket 37 fixed to the back surface of the housing 3. The open member 73 includes a first open lever 731, a second open lever 732, and a slide pin 733. It is configured. The first open lever 731 is rotatably supported around a portion of the pole pin 44 that supports the pole 42 of the latch mechanism 4 that protrudes to the back side of the housing 3. The first open lever 731 is connected to an outside handle 771 (shown in FIG. 6) provided outside the door 1. The second open lever 732 is rotatably supported by the bracket 37 and is connected to an inside handle 772 (shown in FIG. 6) provided in the door 1. The slide pin 733 can be engaged with and disengaged from the pole 42 of the latch mechanism 4 and is supported by the linkage link 78, and the linkage link 78 is connected to the first locking lever 711 of the locking member 71 via the linkage structure 79. It is connected.
[0023]
Next, the basic operation of the door lock device 2 will be described.
[0024]
When the inside handle 772 or the outside handle 771 is operated in one direction, the first open lever 731 is moved to the urging force of the spring 735 directly or through a rotation operation against the urging force of the spring 736 of the second open lever 732. It is turned against. As a result, the slide pin 733 engages with the pole 42, and this engagement rotates the pole 42 against the urging force of the spring. As a result, the door lock device 1 enters an unlatched state in which the door 1 is opened with respect to the vehicle body (the door 1 in the closed state is opened). Further, when the lock knob 75, the lock key cylinder 76 or the motor 51 is operated in one direction in the latched state of the door lock device 1, the first locking lever 711 is moved via the indoor lock linkage lever 74, the idle swing lever 721 and the slide bush 723. The first locking lever 711 is rotated through the outdoor lock linkage lever 75 and the second locking lever 712 or through the worm gear 52, the wheel gear 53, the first output member 54, and the second output member 55. By the pivoting operation, the linkage link 78 is moved through the linkage structure 79, whereby the slide pin 79 moves and is disengaged from the pole 42 (the door lock device 2 in the unlocked state is locked). Become).
[0025]
When the lock knob 75, the lock key cylinder 76, or the motor 51 is operated in the opposite direction to the above to rotate the first locking lever 711 in the opposite direction, the door lock device 2 in the locked state is moved. It becomes unlocked. Further, when the motor 61 is operated in one direction in the locked state of the door lock device 1, the double lock lever 722 is rotated via the worm gear 62 and the output member 63. By the rotation of the double lock lever 722, the slide bush 723 moves and is disengaged from the idle swing lever 721, and the linkage between the locking knob 75 and the locking member 71 is cut off (double lock release state in the locked state). The door lock device 2 in the state is in a double lock state in the locked state). When the motor 61 is operated in the other direction to rotate the double lock lever 732 in the opposite direction, the door lock device 2 in the double lock state is in the double lock release state.
[0026]
The main part structure regarding the present invention of door lock device 2 is explained.
[0027]
As shown in FIGS. 7 and 8, the housing 3 is formed with a cylindrical bearing portion 35 protruding adjacent to the tunnel portion 36. The latch pin 43 that rotatably supports the latch 41 is supported to the housing 3 by the inner surface 351 of the bearing portion 35, and the spring 45 is supported by the outer surface 352 of the bearing portion 35 at the winding portion 451 thereof. Is supported against. A latch cam 81 is rotatably supported on the outer surface 351 of the bearing portion 35. The latch cam 81 has a cam portion 811 that has a cam shape in the radial direction, and is connected to the latch 42 by a pin 82 so as to rotate integrally with the latch 42. The cam portion 811 of the latch cam 81 can come into contact with the leg portion 711 a formed on the first locking lever 711 of the locking member 71 of the link mechanism 7 in the unlatched state of the door lock device 2. The rotation of the first locking lever 711 is restricted by contact with the leg portion 711a, thereby preventing the door lock device 2 in the unlocked state from being locked in the unlocked state. (Shown in FIG. 10). The pin 82 locks one end 452 of the spring 45. The other end 453 of the spring 45 is locked to the tunnel portion 35 (shown in FIG. 1). As a result, the spring 45 applies an urging force for rotating the latch 41 to the latch 41.
[0028]
A notch portion 38 is formed in a portion adjacent to the bearing portion 35 of the wall forming the second recess 32 of the housing 3, and a pin portion 343 located at the notch portion 38 is formed in the lid 34. Yes. A cam lever 82 is rotatably supported on the pin portion 343. The cam lever 82 is formed with an arm portion 821 that can come into contact with the cam portion 811 of the latch cam 81. The cam lever 82 is moved in one direction (counterclockwise shown in FIG. 7) by the contact between the cam portion 811 and the arm portion 821. Direction). A leaf spring 83 is insert-molded on the cam lever 82. The leaf spring 83 urges the cam lever 83 to rotate in the other direction (clockwise in FIG. 7). One end 831 of the leaf spring 83 is locked to the housing 3 and the other end 832 is an internal space. It is located within 32b and faces the switch portion 8a of the courtesy switch 8.
[0029]
The other end 832 of the leaf spring 83 is engaged with and disengaged from the switch portion 8 a of the courtesy switch 8 by rotation of the cam lever 82. Thereby, the courtesy switch 8 is turned on / off. Further, the latch cam 81 is formed with a protrusion 812 that can come into contact with the protrusion 822 formed on the cam lever 82 when the latch cam 81 rotates in the other direction, and the protrusion 822 and the protrusion 812 contact each other. The cam lever 82 is forcibly rotated in the other direction by the latch cam 81.
[0030]
Note that the latch cam 81 may be formed integrally with the latch 42.
[0031]
The main part operation | movement regarding this invention of the door lock apparatus 2 is demonstrated.
[0032]
In the unlatched state of the door lock device 2, when the latch 41 is rotated by the above-described operation so that the door lock device 2 is in the latched state, the latch cam 81 is also rotated integrally with the rotation of the latch 41. When the latch cam 81 is rotated, the cam portion 811 and the arm portion 821 of the cam lever 82 come into contact with each other, and the cam lever 82 is rotated in one direction against the urging force of the leaf spring 83. As a result, the one end 832 of the leaf spring 83 is rotated in response to the rotation of the cam lever 82 and comes into contact with the switch portion 8a of the courtesy switch 8, and the courtesy switch 8 is turned on. The courtesy switch 8 is turned on when the door lock device 2 is in the latched state or just before the door switch device 2 is in the latched state. As a result, the latch state of the door lock device 2 is detected (shown in FIG. 9).
[0033]
In the latched state of the door lock device 2, when the latch 41 is rotated as much as possible to bring the door lock device 2 into the unlatched state by the above-described operation, the latch cam 81 is also rotated integrally with the rotation of the latch 41. When the latch cam 81 is rotated, the contact between the cam portion 811 and the arm portion 821 of the cam lever 82 is released, and the urging force of the leaf spring 83 causes the cam lever 82 to follow the latch cam 81 in the other direction. It can be rotated. At this time, if the cam lever 82 does not rotate due to freezing or the like, the projection 822 of the cam lever 82 contacts the projection 812 of the latch cam 81, and the cam lever 82 is forcibly rotated in the other direction by the rotation of the latch cam 81. As a result, the one end 832 of the leaf spring 83 is rotated in response to the rotation of the cam lever 82 to release the contact with the switch portion 8a of the courtesy switch 8, and the courtesy switch 8 is turned off. The courtesy switch 8 is turned off when the door lock device 2 is released from the latched state or after the latched state is released. As a result, the unlatched state of the door lock device 2 is detected (shown in FIG. 7).
[0034]
【The invention's effect】
According to the present invention, since the cam lever is disposed between the courtesy switch and the latch cam, the latched state and the unlatched state of the door lock device are detected by engaging and disengaging the switch part of the courtesy switch and the latch cam via the cam lever. be able to. This makes it possible to dispose the courtesy switch away from the latch. As a result, the courtesy switch can be isolated from the latch and exposure to the outside through the latch of the courtesy switch can be suppressed. Therefore, it is possible to alleviate the influence of water entering from the outside, dust, and grease of the latch mechanism, and to reduce the malfunction of the courtesy switch.
[0035]
According to the present invention, since the urging member that constantly urges the cam lever in the engagement direction with the latch cam and is detachable from the switch part of the courtesy switch is provided, the number of parts is reduced and the manufacturing man-hours are reduced. Reliability can be improved.
[0036]
According to the present invention, since the latch cam is provided with the engagement protrusion that can come into contact with the cam lever at the time of turning in the disengagement direction with the striker of the latch, the cam lever can be forcibly turned by the latch. It is possible to reduce malfunction due to freezing of the cam lever or the like.
[0037]
According to the present invention, the engaging portion that abuts the latch cam in the disengagement state of the locking member with the striker of the latch and restricts the operation of the locking member in the direction of releasing the linkage between the first operating means and the pole. Since it is provided, unnecessary operation of the locking member can be restricted without increasing the number of parts.
[0038]
According to the present invention, the bearing, which is provided in the housing, supports the latch, the latch cam, and the spring that urges the latch in the disengagement direction with the striker. Therefore, the coaxial arrangement saves space, reduces the number of parts, and the like. Can be measured.
[Brief description of the drawings]
FIG. 1 is a plan view of a door lock device according to the present invention.
FIG. 2 is a side view of a door lock device according to the present invention.
FIG. 3 is a partial perspective view of the door lock device according to the present invention as viewed from the front side.
FIG. 4 is a partial perspective view of the door lock device according to the present invention as seen from the back side.
FIG. 5 is a cross-sectional view of a lid body of a door lock device according to the present invention.
FIG. 6 is a plan view of a door equipped with a door lock device according to the present invention.
FIG. 7 is a plan view of the door lock device in a latched state showing a detection structure of the door lock device according to the present invention.
FIG. 8 is a cross-sectional view showing a detection structure of a door lock device according to the present invention.
FIG. 9 is a plan view of the door lock device in the unlatched state showing the detection structure of the door lock device according to the present invention.
FIG. 10 is a plan view showing the operation of the detection structure of the door lock device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 Door lock apparatus 3 Housing 4 Latch mechanism 5 Locking actuator 8 Courtesy switch 8a Switch part 31 1st recessed part 32 2nd recessed part 35 Bearing part 41 Latch 42 Pole 45 Spring 71 Locking member 75 Lock knob (2nd operation means in a room)
76 Lock key cylinder (outdoor second operating means)
81 Latch cam 82 Cam lever 83 Leaf spring (biasing member)
343 Pin part (support part)
771 Outside handle (first indoor operating means)
772 Inside handle (first outdoor operating means)
812 Protrusion (engagement protrusion)
711a Leg (engaging part)

Claims (6)

In a door lock device having a latch that engages and disengages with a striker, a latch mechanism that includes at least a pawl that engages and disengages with the latch, and is operated by a first operation means inside and outside the room, and a courtesy switch that detects the operation of the latch mechanism A latch cam that rotates integrally with the latch; and a cam lever disposed between the latch cam and the courtesy switch. The cam lever is integrated with the latch engaged with the striker in one direction. rotates the an arm portion which can come into contact with the latch cam, the striker into the latch to disengage and a projection capable of contacting to said latch cams to rotate in the other direction together provided, the latch cam Is provided with a cam portion that can come into contact with the arm portion of the cam lever, and a projection that can come into contact with the projection of the cam lever. Door locking device to be.   The door lock device according to claim 1, further comprising a biasing member that constantly biases the cam lever in a direction in which the cam lever is engaged with the latch cam and is detachable from the switch portion of the courtesy switch.   In a disengaged state between the locking member that is operated by the second operating means indoors and outdoors to disengage the linkage between the first operating means and the pawl and the striker of the latch that is formed on the locking member 2. The door lock device according to claim 1, further comprising an engaging portion that abuts on a latch cam and restricts an operation of the locking member in a direction in which the first operation unit and the pawl are released.   A first recess for receiving the latch mechanism; a second recess different from the first recess for storing the courtesy switch; and a support for supporting the cam lever between the first recess and the second recess. The door lock device according to claim 1, further comprising a housing. A locking member supported on the housing and actuated by second operating means indoors and outdoors to disengage the linkage between the first operating means and the pole; and disposed in the second recess of the housing. The door lock device according to claim 4 , further comprising a locking actuator that operates the locking member. 5. The door lock device according to claim 4 , further comprising: a bearing portion that is formed in the housing and supports a spring that urges the latch, the latch cam, and the latch in a direction of releasing the engagement with the striker.

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