JP2019112865A - Door lock device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door lock for a vehicle capable of reliably releasing the door lock even when the door reaction force is small such as in a half latch state. SOLUTION: The door lock device 10 for a vehicle includes a latch 22 rotatably supported between a door lock position and a door lock release position, and a first pole claw portion 32A for locking the latch 22. The first pole 32 is rotatably supported between the latch locking position and the latch locking release position, and the second pole inner claw portion 42B for locking the first pole claw portion 32A is provided, and the first pole is provided. The second pole 42 rotatably supported between the locking position and the first pole unlocking position, the first lever portion 54 for pushing the first pole 32, and the second pole 42 are pushed. The second lever portion 56 is provided, and the lift lever 50 is rotatably supported. [Selection diagram] Fig. 3

Description

  The present invention relates to a door lock device for a vehicle.

  In Patent Document 1 below, a holding portion that engages with the pole and holds the pole in the release position, and abuts the latch when the latch moves from the door lock position toward the door unlock position. A door lock device for a vehicle is disclosed which is provided with a holding lever having an arm portion for separating the holding portion from the pole.

Japanese Patent Application Laid-Open No. 10-266666

  However, the door lock device for a vehicle described in Patent Document 1 is a reaction force acting on the door due to the resilience of the weather strip that seals the back door in a liquid tight manner, for example, in a half latch state. In the case where the load is small, the load acting on the pole from the latch due to the door reaction force is small, so the pole may not be released, and the door lock may not be released from the half latch state (half open state). Therefore, there is room for improvement in that the door lock is reliably released when the door reaction force in the half latch state or the like is small.

  An object of the present invention is to provide a vehicle door lock device capable of reliably releasing a door lock when a door reaction force such as a half latch state is small in consideration of the above fact.

  The door lock device for a vehicle according to claim 1 is formed so as to be concave toward the latch support shaft provided on the vehicle door and toward the latch support shaft, and engages with a striker provided on the vehicle body. And a first latch claw portion and a second latch claw portion extending radially outward on both sides in the circumferential direction sandwiching the engagement concave portion, and the engagement concave portion includes The door lock position engaged with the striker and the engagement recess are rotatably supported by the latch support shaft between the door lock release position disengaged from the striker and biased toward the door lock release position. And a first pole support shaft provided at a position different from the latch support shaft in the door for a vehicle, and one radial outer end, wherein the first latch claw portion and the second latch claw One of the parts is selectively locked A latch comprising: a pole pawl portion; and a first pole engagement portion which is the other radial outer end portion, wherein any one of the first latch pawl portion and the second latch pawl portion is engaged A first pole supported by the first pole support shaft so as to be pivotable between a retaining position and a latch unlocking position permitting rotation of the latch, and a first pole biased toward the latch locking position; A second pole support shaft provided at a position different from the latch support shaft and the first pole support shaft in a vehicle door, and extends radially outward, and the first pole claw portion is locked. A second pole inner claw portion, and a second pole engaging portion extending radially outward, the first pole locking position at which the first pole claw portion is locked, and The second pole support can be pivoted between a first pole locking release position that permits pivoting of the one pole. Supported and biased toward the first pole locking position, and the second pole is extended radially outward, and the radial outer end portion is pushed by pressing the first pole engaging portion. A first lever portion provided with a first pressing portion for releasing a locked state between a second latch claw portion and the first pole claw portion, and a radially outer end portion extending outward in the radial direction And a second lever portion provided with a second pressing portion for releasing the locked state between the first pole claw portion and the second pole inner claw portion by pushing the second pole engaging portion. And a lift lever rotatably supported by the second pole support shaft and to which a transfer force of the door opening control means is transmitted.

  According to the door lock device for a vehicle according to the first aspect, in the door lock state in which the vehicle door is fully closed, the engagement recess of the latch is engaged with the striker provided on the vehicle body. At this time, a moment due to a door reaction force acting through the striker acts on the latch together with the biasing force toward the door lock release position by the latch support shaft. A moment is exerted on the first pole by a second pole inner claw that locks the first pole claw along with biasing force toward the latch locking position by the first pole support shaft. Furthermore, a moment due to a door reaction force acts on the first pole claw portion that locks the first latch claw portion on the first pole. In the door lock state, since the biasing force and moment acting on the first pole are balanced, the latch, the first pole and the second pole are locked to each other.

  Further, according to the door lock device for a vehicle according to the first aspect, the lift lever is turned by the transmission of the opening operation means being transmitted, so that the second lever portion of the lift lever is moved in a second direction. The pushing portion pushes the second engaging portion of the second pole. At this time, the lift lever is not pivoted to a position where the first pressing portion of the first lever portion can push the first pole engaging portion. The second pole pressed by the second engaging portion is rotated from the first pole locking position toward the first pole locking release position in accordance with the rotation of the lift lever. The second pole inner claw portion of the rotated second engaging portion is separated from the first pole claw portion, so that the biasing force by the first pole support shaft and the moment acting on the first pole by the door reaction force are I can not get along. At this time, when the moment by the door reaction force is larger than the biasing force by the first pole support shaft, the moment by the door reaction force causes the first pole to rotate from the latch engagement position toward the latch engagement release position. Be done. As a result, the first latch claws disengage from the first pole claws.

Furthermore, according to the door lock device for a vehicle according to claim 1, the latch from which the first pole claw portion is released is pivoted toward the door lock release position by the biasing force of the latch support shaft.
Further, the first pole is pivoted toward the latch engagement release position. The first pole for which the moment from the latch has ceased to act due to disengagement from the first latch claw portion is rotated toward the latch engagement release position, and then the latch engagement is engaged by the biasing force of the first pole support shaft. It is pivoted in the position direction. Therefore, for example, when the first pole is pivoted only a little toward the latch engagement release position because the door reaction force is not sufficiently large, the first pole returns to the latch engagement position in a short time. . The first pole returned to the latch locking position locks the second latch claw of the latch. In addition, the second pole inner claw portion of the second pole rotated in the direction of the first pole locking position by the second pole support shaft locks the first pole claw portion. This results in a half latch condition in which the striker is slightly engaged in the engagement recess of the latch.

  According to the door lock device for a vehicle according to claim 1, in the half latch state, the transfer lever of the door opening operation means is transmitted to rotate the lift lever, and the first pressing portion of the first lever portion The first pole engaging portion is pushed. By rotation of the lift lever, the first pole claw portion is released from the locked state with the second latch claw portion and the first pole is rotated from the latch locked position toward the latch locked release position Ru. As a result, the locked state between the second latch claw portion and the first pole claw portion in the half latch state is reliably released. Therefore, when the door reaction force in the half latch state or the like is small, the door lock is reliably released. can do.

  As described above, the vehicle door lock device according to the present invention has an excellent effect that the door lock can be reliably released when the door reaction force in the half latch state or the like is small.

It is a schematic rear view which saw the principal part in the door lock state of the door lock device for vehicles concerning this embodiment from the vehicle back side. It is a schematic rear view which saw the principal part in the half latch state of the door lock device for vehicles concerning this embodiment from the vehicle back side. FIG. 3 is a schematic rear view of the main part of the vehicle door lock device immediately before the first pole is rotated by the lift lever in the half latch state shown in FIG. It is a schematic rear view which looked at the principal part in the open state of the door lock device for vehicles concerning this embodiment from the vehicle back side. It is a schematic rear view which looked at the principal part in the half latch state of the door lock device for vehicles by conventional technology from the vehicle back side.

  Hereinafter, the door lock for vehicles which concerns on embodiment of this invention is demonstrated using FIGS. 1-4. In the following drawings, the arrow IN indicates the inside in the vehicle width direction, and the arrow UP indicates the upper side of the vehicle.

  In FIGS. 1 to 4, the main part of a door latch device 10 as a vehicle door lock device fixed to a side door (not shown) as a vehicle door rotatably connected to an A pillar of a vehicle body The state seen from the rear side is shown. When the door latch device 10 and the striker 14 formed in a substantially U shape in plan view and fixed to the B pillar (not shown) of the vehicle body are engaged, the side door is in a fully latched state (door locked state) or It is held in the half latch state (half open state).

  The door latch device 10 is provided with a base plate (not shown). On the base plate, a latch 22 formed in a substantially flat plate shape with the thickness direction in the longitudinal direction of the vehicle is rotatably supported via a latch support shaft 20. The latch 22 pivots around the latch support shaft 20 between the door lock position in the full latch state shown in FIG. 1 and the door lock release position in the open state (door lock release state) shown by the solid line in FIG. A biasing force (moment) MR of a latch biasing spring (not shown) is biased toward the door unlocking position shown in FIG. 4. In addition, a half latch position in a half latch state indicated by a solid line in FIG. 2 and a two-dot chain line in FIG. 4 is set between the door lock position and the door lock release position.

  In the latch 22, in order to be able to engage with the striker 14, an engagement recess 22 </ b> A formed so as to be concave toward the latch support shaft 20 is formed. A first latch claw 22B and a second latch claw 22C extending outward in the radial direction of the latch are provided on both sides in the circumferential direction of the latch sandwiching the engagement recess 22A. The first latch claw portion 22B is formed such that a tip end portion 22B1 thereof is bent in a turning direction (clockwise direction in the drawing). Further, a guide plate 22D is provided on the lower side of the second latch claw portion 22C.

  The first pole 32 is rotatably supported on the base plate of the door latch device 10 via the first pole support shaft 30 on the lower side of the vehicle substantially at the same position as the longitudinal direction of the latch 22 and on the inner side in the vehicle width direction. ing. The first pole 32 has a longitudinal direction in the vehicle width direction, and is formed in a substantially plate shape. The first pole 32 is pivotable about the first pole support shaft 30 between the latch locking position shown in FIG. 1 and the latch locking release position shown by the solid line in FIG. 4 and is not shown. The biasing force (moment) M1 of the first pole biasing spring is biased toward the latch locking position.

  A first pole claw portion 32A for engaging with the first latch claw portion 22B and the second latch claw portion 22C is provided at the vehicle width direction outer end portion which is one radial outer end portion of the first pole 32. It is done. Further, at the vehicle width direction inner end which is the other radial outer end of the first pole 32, there is provided a first pole engaging portion 32B which is pushed by a lift lever 50 described later. A first pole engaging recess 32B1 is formed on the lower side of the first pole engaging portion 32B for the lift lever 50 to abut.

  The second pole 42 rotates around the base plate of the door latch device 10 via the second pole support shaft 40 on the vehicle lower side substantially at the same position as the vehicle longitudinal direction position of the latch 22 and on the outer side in the vehicle width direction of the first pole 32. It is supported movably. The second pole 42 is formed in a substantially plate shape whose longitudinal direction is the vertical direction of the vehicle. The second pole 42 is pivotable about the second pole support shaft 40 between the first pole locking position shown in FIG. 1 and the first pole locking release position shown by the solid line in FIG. By the biasing force (moment) M2 of the second pole biasing spring (not shown), it is biased toward the first pole locking position.

  The second pole 42 extends from the second pole support shaft 40 toward the second pole radial direction outside on the vehicle upper side and in the vehicle width direction inside of the second pole 42 and is engaged with the first pole claw portion 32A A pole inner claw portion 42B is provided. A second pole outer side is formed on the outer side in the vehicle width direction of the second pole inner claw portion 42B via a second pole concave portion 42A which is recessed toward the vehicle lower side toward the second pole support shaft 40 The claw portion 42C is provided. The second pole outer claw portion 42C is extended so as to be inclined toward the vehicle front side and the vehicle upper side to the extent that it can contact the guide plate 22D by rotating the second pole 42. In addition, a second pole engaging portion 42D which is pushed in a state of being in contact with a lift lever 50 described later is provided on the outer side in the vehicle width direction of the lower end portion of the second pole 42.

  On the vehicle front side of the second pole support shaft 40, the lift lever 50 is pivotable by the second pole support shaft 40 between the normal position shown in FIG. 1 and the operation position shown in solid lines in FIG. It is supported.

  A portion around the second pole support shaft 40 of the lift lever 50 is a central portion 52 formed in a substantially disc shape. A substantially plate-shaped first lever portion 54 is provided on the inner side in the vehicle width direction of the lift lever 50 with the vehicle width direction as the longitudinal direction and extending from the central portion 52 inward in the vehicle width direction. The inner end of the first lever portion 54 in the vehicle width direction is formed substantially in a plate shape with the longitudinal direction of the vehicle as a longitudinal direction, and the rear end of the first pole 32 is A first pushing portion 54A is provided, which extends to the rear side of the vehicle to the side.

  When the lift lever 50 is rotated, the first pressing portion 54A abuts against the first pole engagement recess 32B1 and pushes the first pole 32 to move the second latch claw portion 22C and the first pole claw portion. The longitudinal length of the vehicle is set to such an extent that the engagement state with 32A can be released.

  Further, the lower side of the lift lever 50 is provided with a substantially plate-like second lever portion 56 whose longitudinal direction is the vertical direction of the vehicle and extends from the central portion 52 toward the lower side of the vehicle. An outer side of the lower end portion of the second lever portion 56 in the vehicle width direction is formed substantially in a plate shape with the longitudinal direction of the vehicle as a longitudinal direction, and the second pole 42 is formed from the lower end portion of the second lever portion 56 The second pressing portion 56A extends toward the rear side of the vehicle to the rear side of the vehicle.

  The second pressing portion 56A abuts on the second pole engaging portion 42D when the lift lever 50 is rotated, and pushes the second pole 42 to move the first pole claw portion 32A and the second pole inner claw The longitudinal length of the vehicle is set to such an extent that the engagement with the portion 42B can be released.

  One end of the lift lever 50 is indirectly connected to a door inside handle and a door outside handle (both not shown) which are opening operation means 90 mounted on the inside and outside of the side door. The side door is set so as to rotate by the operation of the door opening operation means 90 and transmission of the transmission force.

  Next, the operation and effects of the present embodiment will be described.

  As shown in FIG. 1, in the fully latched state where the side door is fully closed, the engagement recess 22A of the latch 22 engages with the striker 14 and the tip 22B1 of the first latch claw 22B is the first pole The hook 32A is engaged. In addition, the first pole claw portion 32A is locked to the second pole inner claw portion 42B on the lower side of the vehicle.

  The door reaction force FR acts on the latch 22 in the fully latched state via the striker 14. Due to the door reaction force FR, a moment is generated in the first pole claw portion 32A in the direction of rotating it from the latch engagement position toward the latch engagement release position. On the other hand, the first pole claw portion 32A latches the first pole 32 from the latch release position by the first pole urging spring and the second pole inner claw portion 42B abutted from the lower side of the vehicle. A moment is generated in the direction of rotation toward the locking position. The latch 22, the first pole 32 and the second pole 42 are locked to each other with their moments balanced.

  Since the lift lever 50 is rotated by the operation of the opening operation means 90, the second pressing portion 56A of the second lever portion 56 of the lift lever 50 is the second engaging portion 42D of the second pole 42. Press. Therefore, the second pole 42 is pivoted from the first pole locking position toward the first pole locking release position in accordance with the pivoting of the lift lever 50. As a result, the second pole inner claw portion 42B separates from the first pole claw portion 32A.

  Since the second pole inner claw portion 42B is separated from the first pole claw portion 32A, the biasing force M1 by the first pole biasing spring and the moment by the door reaction force FR are not balanced. Therefore, when the moment by the door reaction force FR is larger than the urging force M1 by the first pole urging spring, the moment by the door reaction force FR causes the first pole 32 to be released from the latch engagement position from the latch engagement position. It is pivoted towards it. As a result, the first latch claw portion 22B is separated from the first pole claw portion 32A.

  The latch 22 from which the first pole claw portion 32A is released is pivoted from the door lock position toward the door lock release position by the biasing force MR by the latch biasing spring. Also, the first pole 32 is pivoted to the latch release position. The biasing force of the first pole biasing spring after the first pole 32 whose moment from the latch 22 ceases to act due to disengagement from the first latch claw portion 22B is turned to the latch locking release position M1 is pivoted towards the latch locking position. Therefore, for example, when the first pole 32 is slightly rotated toward the latch release position because the door reaction force is not large enough, the first pole 32 is placed in the latch engagement position in a short time. Return to The first pole 32 returned to the latch engagement position engages the second latch hook 22C of the latch 22 as shown in FIG. Further, the second pole inner claw portion 42B of the second pole 42 rotated toward the first pole locking position by the biasing force M2 of the second pole biasing spring locks the first pole claw portion 32A. . This results in a half-latched condition in which the striker 14 is slightly engaged with the engagement recess 22 of the latch 22.

  In the half latch state in which the striker 14 is slightly engaged with the engagement recess 22A, the moment generated in the first pole 32 through the second latch claw portion 22C by the door reaction force FR, the first pole biasing spring and the vehicle The moment acting in the direction of rotating the first pole 32 from the latch locking release position to the latch locking position may be balanced by the second pole inner claw portion 42B that is abutted from the lower side. In this case, since the latch 22 does not rotate in the half latch state, the latch 22 is not detached from the striker 14.

  In the present embodiment, as shown in FIG. 3, in the half latch state, when the lift lever 50 is pivoted, the second pushing portion 56A pushes the second pole engaging portion 42D to The engagement between the 1-pole claw portion 32A and the second-pole inner claw portion 42B is released. For this reason, the second pole 42 is separated from the first pole claw portion 32A. Further, when the lift lever 50 is pivoted, the first pushing portion 54A pushes the first pole engagement concave portion 32B1 to engage the second latch claw portion 22C with the first pole claw portion 32A. At the same time, the first pole 32 is pivoted from the latch locking position toward the latch locking release position. As a result, the second latch claw portion 22C is reliably released from the engagement with the first pole claw portion 32A, and is separated from the first pole claw portion 32A.

  The latch 22 from which the first pole 32 is released is, as shown in FIG. 4, a door lock indicated by a solid line from a position in a half latch state indicated by a two-dot chain line by an urging force MR by a latch urging spring. It is pivoted to the release position. As a result, the side door is fully opened.

  As a comparative example, FIG. 5 shows a door latch device 90 having a first pole 32 without the first latch claws 22B. The same components as those of the present embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  According to the door latch device 90 of the comparative example, in the half latch state, the moment generated on the first pole 32 by the door reaction force FR, the first pole urging spring, and the second pole inner claw portion 42B abutted from the vehicle lower side. Thus, when the moment acting on the first pole 32 is balanced, the latch 22 can not be rotated even if the lift lever 50 is further rotated.

  On the other hand, according to the present embodiment, as shown in FIG. 4, in the first pole 32, the first pole engaging recess 32 B 1 is pushed by the first pressing portion 54 A of the lift lever 50. , Pivoted to the latch release position. Thus, even when the door reaction force in the half latch state or the like is small, the door lock can be reliably released.

  As described above, the door lock apparatus for a vehicle according to the present embodiment can reliably release the door lock when the door reaction force in the half latch state or the like is small.

  Furthermore, according to the present embodiment, since the first pole engaging recess 32B1 is formed in the first pole 32, the first pressing portion 54A reliably abuts on the first pole engaging recess 32B1. Thus, the first pole 32 can be reliably separated from the latch 22 in accordance with the rotation of the lift lever 50.

  Although the door latch device 10 is described as being applied to the side door, the present invention is not limited to this, and the vehicle door lock device according to the present invention may be applied to the back door provided at the rear of the vehicle. Good.

  Furthermore, although the door opening operation means 90 of the side door has been described as the door inside handle and the door outside handle here, the invention is not limited thereto, and an electric actuator that can be driven by supply from a vehicle power supply The opening operation means used may be provided.

  Furthermore, here, the latch 22, the first pole 32, and the second pole 42 are described as being provided at substantially the same position in the vehicle longitudinal direction, but the present invention is not limited thereto. The rotation of the latch may be locked by an engaging portion provided at a vehicle longitudinal direction position different from the latch and extending in the vehicle longitudinal direction from the first pole and the second pole toward the latch.

10 Door latch device (door lock device for vehicle)
14 striker 20 latch support shaft 22 latch 22A engagement recess 22B first latch claw portion 22C second latch claw portion 30 first pole support shaft 32 first pole 32A first pole claw portion 32B first pole engagement portion 40 second Pole support shaft 42 Second pole 42B Second pole inner claw portion 42D Second pole engagement portion 50 Lift lever 54 First lever portion 54A First pressing portion 56 Second lever portion 56A Second pressing portion 90 Opening operation means

Claims (1)

A latch support shaft provided on the vehicle door;
The latch recess is formed to be concave toward the latch support shaft side, and an engagement recess which can be engaged with a striker provided on the vehicle body, and radially outward on both sides in the circumferential direction across the engagement recess. A door lock position in which the engagement recess is engaged with the striker, and a door lock release in which the engagement recess is disengaged from the striker. A latch rotatably supported between the latch pivots and biased toward the door lock release position between positions;
A first pole support shaft provided at a position different from the latch support shaft in the vehicle door;
One of the radially outer end portions, a first pole claw portion to which any one of the first latch claw portion and the second latch claw portion is selectively engaged, and the other radially outer end portion A latch engagement position having a first pole engagement portion, and a latch engagement position at which any one of the first latch claw portion and the second latch claw portion is engaged, and a latch engagement that allows rotation of the latch A first pole rotatably supported between the first pole support shaft and a release position and biased toward a latch engagement position;
A second pole support shaft provided at a position different from the latch support shaft and the first pole support shaft in the vehicle door;
A second pole inner claw portion extending radially outward and in which the first pole claw portion is engaged; and a second pole engaging portion extending radially outward. The second pole support shaft can pivot between a first pole locking position at which the first pole claw portion is locked and a first pole locking release position that permits rotation of the first pole. A second pole supported and biased towards the first pole locking position;
Extending radially outward and releasing the locked state between the second latch claw portion and the first pole claw portion by pushing the first pole engagement portion to the radially outer end portion A first lever portion provided with a first pressing portion, and the first pole claw portion extending radially outward and pressing the second pole engaging portion at the radially outer end portion And a second lever portion provided with a second pressing portion for releasing the locked state between the second pole inner claw portion, and is rotatably supported by the second pole support shaft and opened. A lift lever to which the transmission force of the operating means is transmitted;
And a door lock device for a vehicle.