JP5759048B2 - Door lock device - Google Patents

Description

  The present invention relates to a door lock device that locks and unlocks a door provided on a vehicle.

  2. Description of the Related Art Some vehicle door lock devices lock a door in a closed position and release the lock by an electric device equipped with a drive source such as a motor. In this type of door lock device, when the hook engaged with the striker on the vehicle body side is rotated by the electric drive mechanism to the striker holding position (the striker retracting direction) when the door is closed, the latch (pole) becomes the hook. Engage and the hook is restricted from rotating in the striker release direction, and is locked. When the door is opened, if the latch is rotated in the disengagement (unlatching) direction from the hook by an electric drive mechanism or a manual operation system, the hook that is urged to rotate in the striker releasing direction is rotated and the striker is rotated. And the door can be opened.

JP 2003-97125 A Japanese Patent Laid-Open No. 2006-200252

In the door lock device as described above, rainwater and car wash water may enter from above the door lock device housed in the door, for example, from a door lock release lever, a gap in a window mold, or the like. The infiltrated water travels through the cover surface of the door lock device and enters the door lock device from the opening of the release lever that unlocks from inside the vehicle, or for fixing the door lock device to the rear door frame. There was a case of dripping onto a metal base plate.
However, since the conventional door lock device for the rear door did not assume that water would enter the inside of the door, the water that entered the door entered the door lock case from the hole in the door lock cover, and the electrical parts. There is a risk of causing leakage of electricity and promoting the generation of rust by contacting the base plate.

  The present invention has been made in view of the above problems, and even when water enters the door, the door lock can prevent water from entering the electric device of the door lock device and the cover of the ratchet mechanism. An object is to provide an apparatus.

  The door lock device of the present invention holds the rear door that can be opened and closed with respect to the vehicle main body in a fully closed state, and engages with the striker provided on one of the vehicle main body and the rear door and the striker provided on the other. A drive unit case including a mechanism and an electric device for releasing the engagement between the latch mechanism and the striker, the drive unit case housing the electric device, and the door lock device provided with the latch mechanism on a rear door. An open lever that swings and releases the engagement between the latch mechanism and the striker is disposed in the slot, and the drive unit case has an elongated hole that allows the open lever to be released from within the vehicle body. And, in a state where the rear door is fully closed, a hook-shaped rib that covers the upper part of the elongated hole and extends outward from both ends of the elongated hole is projected, The latch mechanism is provided between the base plate and the upper plate, the base plate and the upper plate being connected to the lower part of the drive unit case, and the drive unit case being connected between the base plate and the upper plate. The connecting portion has a second rib protruding so as to straddle the base plate and the upper plate, and the second rib is characterized in that both end portions extend outward of the upper plate. .

  In the state where the rear door is closed, the second rib has a chevron shape formed below the rib, and both end portions (bottom portions) are formed longer in both lateral directions than the rib. ing.

  According to the present invention, the elongated hole formed in the drive unit case is covered with the hook-shaped rib to enable manual unlocking, and the base plate and the upper plate containing the latch mechanism are connected to the lower part of the drive unit case Since the connecting portion is covered with the second rib formed on the driving portion case, the driving portion can be removed from the long hole of the driving portion case or the connecting portion between the base plate and the upper plate even if water enters the door. There is no water immersion in the case and latch mechanism.

It is a perspective view of an embodiment of a door lock device to which the present invention is applied. It is a disassembled perspective view of the electric device of the door lock device. It is a disassembled perspective view of the latch mechanism of the door lock device. It is the front view which showed the hook of the door lock apparatus alone. It is the front view which showed the ratchet lever of the door lock device alone. It is the front view which showed the intermediate | middle frame of the door lock apparatus alone. It is the front view which showed the cushion rubber of the door lock device alone. It is the perspective view which removed the cover and showed the electric device of the door lock device. It is the perspective view which removed the upper plate and showed the locked state of the latch mechanism of the door lock device. It is the perspective view which removed the lock release operation state of the latch mechanism of the door lock device, and removed the upper plate. It is the perspective view which removed the upper plate of the unlocking state of the latch mechanism of the door lock apparatus. It is a side view which shows a mode that the door lock apparatus was mounted in the rear door of a motor vehicle.

  The door lock device of the present invention will be described based on the illustrated embodiment. A door lock (door closure) device 10 shown in the figure is attached to the rear door 110 side (between the outer panel 111 and the inner panel 112), and supports the rear door 110 so that it can be opened and closed (frame 101). Is provided with a striker S (FIG. 9, FIG. 12) that engages and disengages with respect to the door lock device 10. It should be noted that the positional relationship between the door lock device 10 and the striker S can be reversed. In FIG. 12, reference numeral 113 is a switch for unlocking the door lock device 10 from the outside of the vehicle, and reference numeral 114 is a cable connecting the door lock device 10 and the control device mounted on the vehicle body 100 side. is there.

  As shown in FIGS. 1 and 2, the door lock device 10 includes a latch mechanism 10 </ b> R that engages with the striker S, and an electric device 10 </ b> P that drives to release the engagement between the latch mechanism 10 </ b> R and the striker S.

"Latch mechanism 10R"
The latch mechanism 10R includes a base plate 11 that is fixedly attached to the rear door, and an upper plate 31 that is fixed to the base plate 11 with the intermediate frame 21 interposed therebetween and that is connected and fixed to the electric device 10P. Yes. In this embodiment, the base plate 11 and the upper plate 31 are made of metal, and the intermediate frame 21 is made of synthetic resin.

  In the base plate 11, a striker entry groove 11a into which the striker S can enter is formed, and the shaft pin 12 and the shaft pin 13 are inserted into the shaft holes 11b and 11c located across the striker entry groove 11a. The shaft pin 12 is inserted into a shaft hole 14 a (FIG. 4) formed in the hook 14, and the hook 14 is supported so as to be rotatable about the shaft pin 12. The shaft pin 13 is inserted into a shaft hole 15 a formed in the ratchet lever 15, and the ratchet lever 15 is supported to be rotatable about the shaft pin 13.

  As shown in FIGS. 2 and 3, the hook 14 includes a striker holding groove 14b formed in a substantially radial direction centering on the shaft hole 14a. The striker holding groove 14b is formed between the pair of first leg 14c and second leg 14d. A ratchet lever engaging step (engaging portion) 14e is formed near the tip of the second leg portion 14d on the side facing the striker holding groove 14b. A buffer arch portion 14g that restricts the striker holding groove 14b of the first leg portion 14c and that is bent when the striker S impacts the surface that the striker S collides when the door is closed after being opened, and cushions the impact. Is formed.

  The hook 14 can be rotated between a lock position (striker holding position) shown in FIG. 9 and a lock release position (striker release position) shown in FIGS. 10 and 11. It is urged to rotate toward the release position (counterclockwise in FIGS. 9 to 11). The torsion spring 16 includes a pair of spring ends including a coil portion that surrounds the shaft pin 12 and end portions that engage (contact) the spring hooking protrusion 14 h of the hook 14 and the intermediate frame 21.

  As shown in FIG. 5, the ratchet lever 15 is formed to be swingable about a shaft hole 15a, and the tip end surface engages with the ratchet lever engaging step portion 14e to rotate the hook 14 in the striker release position direction. In a direction to release the engagement with the hook engaging projection 15b that is regulated and held at the striker holding position (locked state) and the side surface is pressed by the release protrusion 45d of the open lever 45 and the ratchet lever engagement step 14e. An open protrusion 15c that is urged to rotate is provided.

  The ratchet lever 15 has a shaft hole 15 a that is swingably fitted to the shaft pin 13, and the hook engagement protrusion 15 b is moved around the shaft center of the shaft hole 15 a to move the ratchet lever engagement step portion 14 e of the hook 14. The latch position (FIG. 9) that is positioned above (can be engaged with the ratchet lever engaging step 14e), and the hook engaging projection 15b is retracted from the movement locus of the ratchet lever engaging step 14e (the ratchet lever engagement). It is formed so as to be rotatable between unlatched positions (FIGS. 10 and 11) that do not engage with the stepped portion 14e, and is moved from the unlatched position to the latched position direction (FIGS. 9 to 9) by a torsion spring (latch urging means) 17. 11 (clockwise in FIG. 11). The torsion spring 17 includes a coil portion that surrounds the shaft pin 13, and a pair of spring end portions that engage (contact) the spring hooking protrusion 15 d of the ratchet lever 15 and the intermediate frame 21.

  The intermediate frame 21 is formed with a striker entry groove 21a corresponding to the striker entry groove 11a of the base plate 11 into which the striker S can enter, and shaft holes 21b and 21c are formed at positions facing the shaft holes 11b and 11c. The shaft pins 12 and 13 are inserted through the shaft holes 21b and 21c. The intermediate frame 21 is formed with a space for rotatably accommodating the hook 14 and the ratchet lever 15 between the base plate 11.

  The intermediate frame 21 is inserted with a spring hooking protrusion 14h of the hook 14, and is inserted with an arc hole 21d that allows the hook 14 to swing and restricts the rotation range, and a spring hooking protrusion 15d of the ratchet lever 15. A circular arc hole 21e that allows the ratchet lever 15 to swing and restricts the rotation range is formed.

  One side wall that regulates the striker entry groove 21a of the intermediate frame 21 is regulated by a leaf spring portion 21f that extends in the back direction from the striker advance side. The leaf spring portion 21f is bent in a direction that narrows the width of the striker entry groove 21a. When the striker S enters the striker entry groove 21a, the striker S is slidably contacted with the other side wall of the striker entry groove 21a. Pinch between.

  At the deepest portion of the striker entry groove 21a, a cushion housing recess 21g is formed that extends in the lateral direction perpendicular to the entry / detachment direction of the striker S. Cushion rubber 23 (FIG. 6) that contacts the striker S that has entered the striker entry groove 21a and absorbs impact is inserted into the cushion housing recess 21g. The cushion rubber 23 includes a first cushion portion 23a fitted into the cushion housing recess 21g, and a second cushion portion extending from the first cushion portion 23a into the striker entry groove 21a and having a tip portion serving as a contact surface of the striker S. 23b, a third cushion portion 23c extending from a first cushion portion 23a into a play space 21h provided on the opposite side of the striker entry groove 21a, allowing the leaf spring portion 21f to bend, and an intermediate frame 21 It has a hook part 23d engaged with the formed cushion rubber engaging hole 21i.

  The torsion springs 16 and 17 are disposed in the space between the intermediate frame 21 and the upper plate 31. One end of the torsion spring 16 is engaged with the spring hooking protrusion 14h of the hook 14, and the other end abuts against the inner wall of the intermediate frame 21 to turn and bias the hook 14 in the unlocking direction. . One end of the torsion spring 17 engages with the spring hooking protrusion 15d of the ratchet lever 15, and the other end engages with the inner wall of the intermediate frame 21, thereby biasing the ratchet lever 15 in the unlatching direction. ing.

  An upper plate 31 is fixed to the upper part of the intermediate frame 21 so as to cover the cushion rubber 23 and the torsion springs 16 and 17. The upper plate 31 is also formed with striker entry grooves 31a similar to the striker entry grooves 11a and 21a of the base plate 11 and the intermediate frame 21, and further the shaft holes 11b and 11c of the base plate 11 and the shaft hole 21b of the intermediate frame 21. , 11c, shaft holes 31b and 31c into which the tip portions of the shaft pins 12 and 13 are fitted are formed (FIGS. 1 and 2). The tips of the shaft pins 11 and 13 passing through the shaft holes 11b and 21b and the shaft holes 11c and 21c are inserted into these shaft holes 31b and 31c, and are crushed and fixed by caulking or the like.

  Further, the upper plate 31 is formed with a bending protrusion 31d for connecting to the electric device 10P and a screw insertion hole 31e in the bending protrusion 31d. The upper plate 31 is attached to the case 41 and the cover 51 by a screw 33 that passes through the screw insertion hole 31e and further passes through the insertion hole 51a of the cover 51 and is screwed into the screw hole formed in the boss 41a of the case 41. Fixed. The bent protrusion 31d is inserted and fixed in a connecting groove 51b formed in the cover 51. The case 41 and the cover 51 constitute a drive unit case and are usually formed of a synthetic resin.

"Electric device 10P"
In the electric device 10P, a motor 42 as an electric member is housed and fixed in a case 41 as a structure. A worm 42 a is attached to the shaft of the motor 42. The worm 42 a meshes with the worm wheel 43. In the worm wheel 43, a rotation shaft 43 a is rotatably inserted into a shaft hole 41 b formed in the case 41. The rotating shaft 43 a extends from both surfaces of the worm wheel 43. An eccentric cam 43 b is projected from the front side of the worm wheel 43. A cam sliding contact end 45b formed at the tip of the open lever 45 is in sliding contact with the outer peripheral surface of the eccentric cam 43b.

  In the case 41, a boss 41d projects from the worm wheel 43 near the center on the side of the connecting portion with the latch mechanism 10R. The boss 41d is fitted with the shaft hole 45a of the open lever 45, and the open lever 45 is pivotally supported. At one end portion of the open lever 45, a cam contact end portion 45b slidably contacting the eccentric cam 43b and a manually operated bending piece 45c for operating the open lever 45 from the inside of the vehicle are formed. The other end of the open lever 45 is formed with a release protrusion 45d that contacts the open protrusion 15c of the ratchet lever 15 and rotates the ratchet lever 15 in the striker release direction. The open lever 45 is urged by a torsion spring 46 so that the open protrusion 15c rotates the ratchet lever 15 in the striker release direction. The torsion spring 46 includes a coil portion surrounding the boss 41 c and a pair of spring end portions including end portions that engage with the open lever 45 and the case 41.

  Further, the case 41 is provided with first and second courtesy switch contact pieces 47 and 48 constituting a rear door courtesy switch. The first courtesy switch contact piece 47 extends to a position where the end portion 47a of the spring portion 47b can contact the detection portion 14f of the hook 14. The end portion 47 a of the first courtesy switch contact piece 47 is pressed by the detection portion 14 f when the hook 14 is in the striker holding position, the spring portion 47 b is bent, and the spring portion 47 b is the contact point of the second courtesy switch contact piece 48. It is formed so as to be separated from 48a. Then, when the hook 14 rotates from the striker holding position toward the striker release position, the spring 47b returns to the restoring direction according to the rotation of the hook 14 while the end 47a presses the detection unit 14f, and the spring 47b is moved to the second courtesy. It contacts the contact 48a of the switch contact piece 48 and maintains the contact state at the striker release position. On the other hand, when the hook 14 is rotated from the striker release position toward the striker holding position, the end portion 47a of the first courtesy switch contact piece 47 is pressed against the detection portion 14f, the spring portion 47b is bent, and the spring portion 47b is contacted in the middle. It is separated from 48a and completely separated at the striker holding position. The first and second courtesy switch contact pieces 47 and 48 are connected to a rear door opening detection circuit (not shown), and the first and second courtesy switch contact pieces 47 and 48 are connected to and separated from the rear door (hook). 14) Open is detected. 1, 2, and 7, reference numeral 41 i is a connector that connects the electric device 10 </ b> P and a control unit mounted on the vehicle.

  A cover 51 is fitted and fixed to the case 41. In the cover 51, a hole 51a for fixing the upper plate 31 and the case 41 with the screw 33, a connecting groove 51b in which the bent protrusion 31d of the upper plate 31 fits, and a manually operated bent piece 45c of the open lever 45 protrude. An arc-shaped elongated hole 51c that allows the open lever 45 to be latched and unlatched is formed. The hole 51a is formed at a position approximately in the center of the connecting groove 51b and coincides with the shaft hole 41b when the cover 51 is fitted into the case.

  Engagement holes 41h are formed at a plurality of locations on the outer peripheral wall 41e of the case 41, and fitting protrusions 51h are provided on the fitting wall 51g of the cover 51 at positions corresponding to the engagement holes 41h. The case 41 and the cover 51 are fitted in close contact by engagement with the engagement holes 41h and the fitting protrusions 51h.

  Further, the cover 51 is formed with a hook-like or hook-like rib 51d so as to cover the upper part of the arc-shaped elongated hole 51c, and as a second rib so as to cover the upper part of the connecting groove 51b. The rib 51e is formed. The rib 51e has a front chevron shape, and in a state where the rear door is closed, both end portions (both base portions) are formed longer outward than both end portions of the rib 51d. In a state where the rear door to which the locking device 10 is mounted is completely closed, the rib 51d covering the arc-shaped elongated hole 51c is configured such that even if water flows along the surface of the cover 51, the water is covered with the rib 51d. 51 is formed so that it gathers at the boundary with 51, flows downward along this boundary, and drops from the outside of the end of the arc-shaped elongated hole 51c. Further, the lower second rib 51e receives water dripped by being guided to the upper rib 51d and water flowing from the outside of the rib 51d through the surface of the case 41 and guides it to the outside of the upper plate 31. , And is formed so as to be dropped outside the latch mechanism 10R.

As described above, since the door lock device of the present embodiment is provided with the bowl-shaped or bowl-shaped ribs 51d and 51e on the surface of the cover 51, even if water enters the door and drops on the surface of the cover 51, Since the ribs 51d and 51e prevent the arc-shaped long hole 51c from entering the electric device 10P and the latch mechanism 10R, the occurrence of rust, electric leakage, and malfunction of the movable part can be prevented.
The protruding amount and shape of the ribs 51d and 51e from the cover 51 are set according to the shape of the cover 51, the position and shape of the arc-shaped elongated hole 51c, and the shape of the rear door to which the door lock device 10 is mounted. .

  Next, the operation of the locking device 10 will be described with reference to FIGS. 8 is a front view showing the locked state with the electric device 10P removed, FIG. 9 to FIG. 11 are the latch mechanism 10R with the upper plate 31 removed, FIG. 9 is the locked state, and FIG. FIG. 11 is a front view showing an unlocked state.

In the locked state shown in FIGS. 8 and 9, the striker S is moved between the second cushion portion 23b (and the second cushion portion 23b) between the side surface of the striker entry groove 14b of the hook 14 on the first leg portion 14c side and the second cushion portion 23b. The first cushion portion 23a) is held in a compressed state. In the hook 14, the hook engaging protrusion 15 b of the ratchet lever 15 is engaged with the ratchet lever engaging step portion 14 e, and the hook 14 is prevented from rotating in the striker releasing direction.
The first courtesy switch contact piece 47 is separated from the contact 48 a of the second courtesy switch contact piece 48 by the end portion 47 a being pushed by the detection portion 14 f and the spring portion 47 b being bent.

  When the motor 42 is rotated in the unlocking direction from this locked state, the worm wheel 43 is rotated clockwise in FIG. 8, and the cam contact end portion 45b of the open lever 45 is pushed by the eccentric cam 43b, and clockwise. To turn. Accordingly, the release protrusion 45d of the open lever 45 presses the open protrusion 15c of the ratchet lever 15 open (unlatched, counterclockwise) to rotate the ratchet lever 15 in the open direction. When the ratchet lever 15 is rotated in the open direction, the hook engaging projection 15b of the ratchet lever 15 is disengaged from the ratchet lever engaging step portion 14e of the hook 14 to make the hook 14 in a free state (unlatched). Then, the striker S is elastically biased in the open direction by the first and second cushion portions 23a and 23b, and the hook 14 is rotationally biased in the lock (latch) releasing direction by the torsion spring 16. Thus, the hook 14 rotates in the opening direction, and the striker S comes out of the striker holding groove 14b (see FIG. 10). As a result, the lock device 10 is unlocked and the rear door can be freely opened.

  The motor 42 further rotates in the unlocking direction and stops when the worm wheel 43 makes one rotation. When the worm wheel 43 makes one rotation, the open lever 45 returns to the same position as in the locked state (FIG. 11). However, since the hook 14 is rotated to the open position and stopped, the ratchet lever 15 is rotated in the locking direction by the rotation urging force of the torsion spring 17, and the hook engaging protrusion 15 b is the second leg of the hook 14. It is in an unlocked state where it abuts on the outer peripheral surface of the portion 14d and stops. Further, in this unlocked state, the hook 14 is separated from the end 47 a of the first courtesy switch contact piece 47, so that the spring portion 47 b is in contact with the contact 48 a of the second courtesy switch contact piece 48.

  When the rear door is closed in this unlocked state, the striker S first collides with the buffer arch portion 14g of the hook 14 and enters the striker holding groove 14b while rotating the hook 14 in the locking direction. Proceed along 21a. The hook 14 rotates in the locking direction while the outer peripheral surface of the second leg portion 14 d is in sliding contact with the hook engaging protrusion 15 b of the ratchet lever 15.

  When the striker S collides with the second cushion portion 23b and progresses until the second cushion portion 23b and the first cushion portion 23a are compressed, the hook engaging protrusion 15b of the ratchet lever 15 becomes the ratchet lever engaging step portion 14e of the hook 14. It rotates to the position where it engages. On the other hand, the striker S collides with the second cushion portion 23b and stops, and is pushed in the direction of exiting the striker entry groove 21a by the elastic restoring force of the first and second cushion portions 23a, 23b, but the hook 14 is engaged with the ratchet lever. Since the stepped portion 14e engages with the hook engaging protrusion 15b of the ratchet lever 15 and rotation in the unlocking direction is prevented, the striker S is held in that position. That is, the locked state shown in FIG. 9 is obtained.

  Further, in this locked state, the first courtesy switch contact piece 47 is separated from the contact 48 a of the second courtesy switch contact piece 48 by the end portion 47 a being pushed by the detection portion 14 f and the spring portion 47 b being bent.

  Although the present invention has been described based on the illustrated embodiments, the present invention is not limited to these embodiments. For example, although the illustrated embodiment is applied to a so-called minivan rear door lock device, the present invention can also be applied to vehicle types other than minivans and doors other than rear doors.

S striker 10 door lock device 10P electric device 10R latch mechanism 11 base plate 11a striker entry groove 11b 11c shaft hole 12 13 shaft pin 14 hook 14a shaft hole 14b striker holding groove 14c first leg 14d second leg 14e ratchet lever engagement Step portion 14f Detection portion 14g Buffer arch portion 14h Spring hook projection 15 Ratchet lever 15 a shaft hole 15b hook engagement projection 15c open projection 16 17 torsion spring 21 intermediate frame 21a striker entry groove 21b 21c shaft hole 21d 21e arc hole 21f plate Spring portion 21g Cushion storage recess 21h Play space 21i Cushion rubber engagement hole 23 Cushion rubber 23a First cushion portion 23b Second cushion portion 23c Third cushion portion 31 Upper plate 31a Entry into striker 31b 31c Shaft hole 31d Bending protrusion 33 Screw 41 Case 41a Boss 41b Shaft hole 41c 41d Boss 41e Outer peripheral wall 41h Engaging hole 42 Motor 42a Worm 43 Worm wheel 43a Rotating shaft 43b Eccentric cam 45 Open lever 45a Shaft hole 45b Cam slide Contact end 45c Manual operation bent piece 45d Release protrusion 46 Torsion spring 47 First courtesy switch contact piece 47a End portion 47b Spring part 48 Second courtesy switch contact piece 48a Contact point 51 Cover 51a Hole 51b Connection groove 51c Arc-shaped slot 51d Rib 51e Rib (second rib)
51g fitting wall 51h protrusion

Claims (2)

A striker provided on one of the vehicle main body and the rear door, a latch mechanism that engages with the striker provided on the other, and a latch mechanism that holds the rear door that can be opened and closed with respect to the vehicle main body. In the door lock device provided with the electric device for releasing the engagement of the striker, the drive unit case in which the electric device is accommodated, and the latch mechanism provided in the rear door,
An open lever that swings and releases the engagement between the latch mechanism and the striker is disposed in the drive unit case,
The drive case includes an elongated hole that allows the open lever to be released from within the vehicle body, and covers the upper portion of the elongated hole when the rear door is fully closed, and both ends of the elongated hole. A hook-shaped rib projecting outward than
The latch mechanism is provided between a base plate and an upper plate, and the base plate and the upper plate are connected to a lower portion of the drive unit case;
The drive unit case has a second rib protruding so as to straddle the base plate and the upper plate at a connection portion between the base plate and the upper plate, and both ends of the second rib are the upper plate. Extending outward from the
A door lock device characterized by. 2. The door lock device according to claim 1, wherein in a state where the rear door is closed, the second rib has a chevron shape formed below the rib, and both end portions are more than the rib. A door lock device that is long in the lateral direction.

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