JP4455157B2 - Vehicle locking device - Google Patents

Description

  The present invention is mounted on a rotating member or a detachable member such as a folding seat rotatably supported on a vehicle floor surface, which can be engaged with and disengaged from a striker projecting on a fixed member side such as a vehicle floor surface. The present invention relates to a vehicle locking device.

The folding seat rotatably supported on the vehicle floor includes a lock mechanism that locks the striker protruding from the vehicle floor when the seat is moved to a use position that is parallel to the vehicle floor. ing.
This type of locking mechanism is generally provided between a notch groove formed in a base member provided at the bottom of a seat, a lock position for gripping a striker that has entered the notch groove, and an unlock position for releasing the striker. A hook that can be rotated, an engagement position that engages with the hook in the lock position and prohibits the hook from rotating toward the unlock position, and the hook that is separated from the hook is in the unlock position. And a pawl that is rotatable between a non-engagement position that allows rotation to the side, and the hook and the pawl are always directed toward the unlocking position side and the engaging position side by a tension spring. Rotation is energized.

Furthermore, in this type of locking mechanism, the pole may not engage with the hook rotated from the unlocked position to the locked position due to variations in the hook and pole mounting positions. Therefore, when the striker engages with the hook, the hook is temporarily rotated to the overstroke position opposite to the unlocking position beyond the locking position, and the pole is moved to the engaging position during that time, Generally, the hook is returned to the locked position by the urging force of the tension spring so that the pole and the hook are securely engaged.
However, if the hook can be rotated to the overstroke position in this way, the hook engaged with the striker at the lock position is rattled only for the overstroke at the time of sitting, and the folded sheet is rattled accordingly. Furthermore, when the user is not seated, the folding seat moves by the overstroke due to vibrations from the vehicle, so that abnormal noise is generated.

Therefore, in Patent Document 1, a folding seat at the time of sitting is established by contacting a striker engaged with a hook at a lock position from the overstroke position side and prohibiting the movement of the striker in the overstroke position direction. A cam member is provided for preventing the generation of abnormal noise from the folding seat when rattling or not sitting.
Japanese Patent Laid-Open No. 11-208333

  In the lock mechanism of Patent Document 1, in addition to the hook, the notch groove (base member) and the cam member are brought into contact with the striker, thereby preventing the hook from rotating from the lock position to the overstroke position side. And since the contact mode with respect to the striker of these three members changes according to the attachment position to the vehicle floor of a folding seat, if these folding members are not attached to the predetermined position of a vehicle floor accurately, these three members will be locked. However, it does not come into contact with the striker in a regular manner, and it is impossible to prevent the folding sheet from rattling when seated and the generation of noise from the folding sheet when not seated. However, it is not easy to attach the folding seat to a predetermined position on the vehicle floor so that all these three members come into contact with the striker in a regular manner.

  An object of the present invention is to provide a vehicular locking device in which a rotating member or a detachable member can be attached to a vehicle body relatively easily so as to reliably prevent rattling of the hook after completion of locking. is there.

The vehicle locking device according to the present invention includes a striker and a lock mechanism that can be engaged with and disengaged from the striker on one and the other of a vehicle body and a rotating member that is rotatable with respect to the vehicle body or a detachable detachable member. The lock device for a vehicle provided with a lock position for gripping the striker, a lock release position for releasing the striker, and an overstroke position opposite to the lock release position beyond the lock position can be rotated. An engagement position that engages the hook and the hook at the lock position and prohibits the hook from rotating toward the unlock position; and away from the hook, the hook rotates toward the unlock position and Paul pivotable between a disengaged position to allow the, and the pole are separate members, the pawl is engaged with the hook in the engagement position Can, on the one hand hook the hook engaged with the hook is prohibited from rotating into the overstroke position side is permissible to rotate into the unlocked position, the pawl is in the disengaged position And an anti-rotation member that releases the engagement with the hook and allows the hook to rotate toward the overstroke position.

  When the hook is rotated from the unlock position to the lock position, the pole is rotated from the lock position to the overstroke position and then to the engagement position. It is preferable to engage with the hook by moving from the overstroke position to the lock position.

  Coupling means that links the pawl and the anti-rotation member and rotates the anti-rotation member while being delayed in the direction of engagement with the hook when the pawl rotates from the non-engagement position side to the engagement position side. May be provided.

  When the anti-rotation member can be rotated about a common rotation axis with the pole, the linking means is provided with an engagement hole formed in one of the pole or the anti-rotation member and protruding on the other side. And an engagement pin that engages with the engagement hole so as to be relatively movable in the arc direction around the common rotation axis.

  The rotation preventing member can be rotated between an engagement position where the rotation preventing member is engaged with the hook and a non-engagement position where the engagement with the hook is released. The rotation preventing member is urged to rotate to the non-engagement position side when positioned on the non-engagement position side from the predetermined position, and the rotation prevention member is rotated when positioned on the engagement position side from the predetermined position. An urging unit that urges the prevention member to rotate toward the engagement position may be provided.

  The present invention can be carried out, for example, by providing a lock mechanism on a folding sheet that is rotatably supported on a floor surface in a vehicle, and disengaging the lock mechanism with a striker protruding from the floor surface. It is.

  According to the present invention, the work of attaching the rotating member or the detachable member to the vehicle body can be simplified as compared with the prior art so as to reliably prevent the rattling of the hook after the lock is completed.

Hereinafter, the present invention will be described based on illustrated embodiments.
First, a vehicle folding seat to which the present invention is applied and its peripheral members will be described.
1 and 2 show a floor surface 100 in an automobile (not shown) and a folding sheet (rotating member) 10 that is rotatably provided on the floor surface 100.
The folding sheet 10 is rotatable about a seat 11 and an axis in the left-right direction at the rear end of the seat 11 (the front and back direction of the paper is the left-right direction, the left side in FIGS. 1 and 2 is the front, and the right side is the rear). A pair of left and right upper rails 13 are provided on the bottom surface of the seat portion 11 so as to face in the front-rear direction and have a saddle shape with an open bottom surface. Each upper rail 13 is supported by a slidable lower rail 14 in the front-rear direction, which has a bowl shape whose upper surface opens. From both ends of the rotating shaft 15 facing in the left-right direction, fixing portions 15a orthogonal to the rotating shaft 15 extend, and the left and right fixing portions 15a are fixed to the front end portions of the bottom surfaces of the left and right lower rails 14, respectively. Yes. A pair of left and right substantially triangular brackets 16 are rotatably attached to the rotating shaft 15, and the folding sheet 10 is attached to the floor surface 100 by fixing the left and right brackets 16 to the floor surface 100. It has been. The folding sheet 10 attached to the floor surface 100 can be rotated in the front-rear direction around the rotation shaft 15.
A pair of left and right strikers 101 projecting in an inverted U shape when viewed from the front side of the vehicle protrudes behind the bracket 16 on the floor surface 100.

Cutout grooves 14a facing substantially in the vertical direction are formed in the bottom ends of the rear ends of the left and right lower rails 14, respectively. The positions corresponding to the cutout grooves 14a in the left and right lower rails 14 are enlarged in FIGS. A locking mechanism 20 is provided.
Next, the lock mechanism 20 and its operation device will be described.
As shown in detail in FIG. 3 to FIG. 10, the left and right lock mechanisms 20 are positioned in front of the hook 22 and the hook 22 that is rotatable between the left and right side walls 14 b of the lower rail 14 and that is rotatable around the rotation shaft 21. A pole 24 and a rotation preventing member 25 that are rotatable around a rotation shaft 23 provided between the left and right side walls 14b are provided.
The hook 22 includes an engaging groove 22a through which the striker 101 can enter, and an engaging protrusion 22b that can be engaged with and disengaged from the pole 24. The counterclockwise rotation of the hook 22 is restricted at the unlock position shown in FIG. 3, and the lock position shown in FIG. 7 is reached by rotating clockwise from the unlock position. When the striker 101 is engaged with the engagement groove 22a at the lock position, the hook 22 locks the striker 101. Since the hook 22 is not restricted in the clockwise direction at the lock position, the hook 22 can rotate to the overstroke position (the position of the phantom line in FIG. 5) further clockwise than the lock position.

The pole 24 overlaps with the hook 22 in the front-rear direction, and a non-engagement position (the position in FIG. 10) that does not engage with the hook 22 and an engaging protrusion 24 a formed at the tip of the pole 24 It is possible to rotate between an engagement position (position in FIG. 7) that abuts on the counterclockwise locking surface 22c of 22b and prevents the hook 22 in the locked position from rotating to the unlocked position. is there.
A tension spring S1 is stretched between the hook 22 and the pole 24, and the biasing force of the tension spring urges the hook 22 to rotate counterclockwise in the figure, and the pole 24 urges to rotate clockwise. Yes.

The rotation preventing member 25 that is rotatably supported by the rotation shaft 23 common to the pole 24 is a member that is longer than the pole 24. The base end side of the rotation preventing member 25 overlaps with the pole 24 in the left-right direction, and when viewed from the front of the vehicle, the tip end side is bent with respect to the base end side (see FIG. 11). It overlaps with the hook 22 (and the pole 24) in the vertical direction (front-rear direction). An engagement hole 25a is formed in the rotation preventing member 25, and an engagement pin 24b projecting from the surface of the pole 24 facing the rotation preventing member 25 is provided in the engagement hole 25a. (The engagement hole 25a and the engagement pin 24b are components of the linking means). Further, a stopper portion 25b that can be engaged with and disengaged from the locking surface 22d on the clockwise side of the engaging protrusion 22b of the hook 22 is provided at the tip of the rotation preventing member 25. The rotation preventing member 25 includes an engagement position (position in FIG. 7) where the stopper portion 25b contacts the locking surface 22d, and a non-engagement position (position in FIG. 10) where the engagement with the hook 22 is completely released. Can be rotated around the rotation shaft 23.
Further, both end portions S2a and S2b of the torsion coil spring (biasing means) S2 are locked in the locking holes 25c and 14c formed in the distal end portion of the rotation preventing member 25 and one side wall 14b of the lower rail 14. Has been. The torsion coil spring S2 is a member that urges the rotation preventing member 25 to rotate, and changes the urging direction of the rotation preventing member 25 with the states of FIGS. Specifically, the other end S2b of the torsion coil spring S2 with respect to a straight line L connecting the axis of the rotating shaft 23 and one end S2a of the torsion coil spring S2 and the contact portion of the locking hole 14c. When the contact portion between the contact hole and the locking hole 25c is positioned forward, the rotation preventing member 25 is urged to rotate clockwise. When the contact portion is positioned behind the straight line L, the rotation preventing member 25 is counterclockwise. Rotate in the direction. Further, the urging force of the torsion coil spring S2 is set smaller than the urging force of the tension spring S1.

One end of an operation wire W is fixed to the pole 24 (see FIG. 10), and the other ends of the operation wires W of the left and right lock mechanisms 20 are linked to an operation lever 17 provided at the front end of the upper rail 13. ing. The operation lever 17 is movable between a non-operation position (the position shown in FIGS. 1 and 2) and an operation position, and is always urged toward the non-operation position by a biasing means such as a spring (not shown). ing.
As shown in FIG. 3, when the striker 101 escapes from the notch groove 14a and the hook 22 is in the unlocked position and the operating lever 17 is moved to the non-operating position, the urging force of the tension spring S1 causes the pole 24 rotates to the engagement position side (clockwise direction), and the pole 24 comes into contact with the hook 22 whose rear surface is in the unlocking position and stops. At this time, since the counterclockwise biasing force is applied to the rotation preventing member 25 from the torsion coil spring S2, it is located at the position shown in FIG. 3, and the lock mechanism 20 is unlocked.

Next, the operation of the lock mechanism 20 configured as above will be described.
As shown in FIG. 2, when the folding seat 10 is in a folding position in which the backrest 12 is parallel to the seat portion 11 and is substantially perpendicular to the floor surface 100, the striker 101 comes out of the lock mechanism 20. The lock mechanism 20 is in the state shown in FIG.
When the folding sheet 10 is rotated backward about the rotation shaft 15 and moved to the use position shown in FIG. 1 while the operation lever 17 is in the non-operation position, the striker 101 enters the notch groove 14a (FIG. 4). When the folding sheet 10 is further rotated rearward, the striker 101 is engaged with the engaging groove 22a, and the hook 22 is rotated to the lock position side against the urging force of the tension spring S1. Then, the engaging protrusion 22b of the hook 22 that is in contact with the side surface of the pole 24 comes into contact with the rear surface of the pole 24, rotates the pole 24 counterclockwise against the urging force of the tension spring S1, and eventually, The engaging projection 22b moves over the rear surface of the pole 24 (see FIG. 5). The hook 22 is rotated by the pressing force of the striker 101 beyond the lock position (solid line position) to the overstroke position (virtual line position) as shown by the phantom line in FIG. On the other hand, the pole 24 rotates clockwise by the biasing force of the tension spring S1 at the moment when the pressing force from the engagement protrusion 22b disappears, and the hook 24 is engaged after moving from the lock position to the overstroke position side. It rotates to the lower part of the protrusion 22b (see FIG. 6). In conjunction with such clockwise rotation of the pole 24, the engagement pin 24b presses the rear surface of the engagement hole 25a backward, so that the rotation preventing member 25 rotates clockwise while being delayed from the pole 24. . When the contact portion between the end portion S2b of the torsion coil spring S2 and the locking hole 25c is located behind the straight line L during the clockwise rotation of the rotation prevention member 25 (the rotation prevention member 25 is located behind the position of FIG. 6). When the torsion coil spring S2 has been biased to rotate the anti-rotation member 25 counterclockwise until then, the anti-rotation member 25 starts to be biased clockwise. The hook 22 rotates from the overstroke position to the locked position by the biasing force of the tension spring S1, and the locking surface 22c on the counterclockwise side of the engaging protrusion 22b locks the pole 24 positioned at the engaging position. The hook 22 comes into contact with the portion 24a and stops at the locked position (see FIG. 7). Then, the rotation preventing member 25 reaches the engaging position after the pole 24, the stopper portion 25b is positioned on the overstroke position side of the engaging protrusion 22b, and the locking surface on the clockwise side of the engaging protrusion 22b. 22d (see FIG. 7).

  In this way, the locking portion 24a of the pole 24 and the locking surface 22c of the engaging protrusion 22b are firmly engaged by the urging force of the tension spring S1, thereby rotating the hook 22 toward the unlocking position ( Counterclockwise rotation) is prevented. Further, the stopper 22b of the rotation preventing member 25 and the locking surface 22d of the engaging projection 22b are firmly engaged by the biasing force of the torsion coil spring S2, so that the hook 22 moves from the lock position to the overstroke position side. Since the rotation is prevented, the hook 22 cannot rotate in any direction after the lock is completed. Therefore, even if the passenger is seated on the seat in this state, the hook 22 does not rotate clockwise or counterclockwise from the locked position, so that the folding seat 10 does not rattle. Further, even when vibration is transmitted from the vehicle to the folding seat 10 when not seated, no abnormal noise is generated from the folding seat 10.

  In order to rotate the folding sheet 10 in the use position to the folding position shown in FIG. 2, the backrest 12 is first tilted forward until it is parallel to the seat 11 and the operation lever 17 is moved to the operation position. . Then, as shown in FIG. 8, the pole 24 starts to rotate counterclockwise against the urging force of the tension spring S1, and the engagement pin 24b presses the front surface of the engagement hole 25a forward, thereby rotating. The prevention member 25 rotates counterclockwise behind the pole 24. When the contact portion between the end S2b of the torsion coil spring S2 and the locking hole 25c is positioned in front of the straight line L during the rotation of the rotation prevention member 25 in the counterclockwise direction (the rotation prevention member 25 from the position in FIG. 9). When it moves forward), the torsion coil spring S2 that has urged the anti-rotation member 25 in the clockwise direction until then starts to urge the anti-rotation member 25 in the counterclockwise direction. When the pole 24 and the rotation preventing member 25 reach the non-engagement position and the non-engagement position, respectively, as shown in FIG. 10 by the urging force of the tension spring S1 and the torsion coil spring S2, the pole 24 and the hook 22 The engagement is completely released. If the folding sheet 10 is rotated forward about the rotation shaft 15 in this state, the striker 101 comes out of the engagement groove 22a and the notch groove 14a, and the hook 22 is unlocked by the biasing force of the tension spring S1. And the folding sheet 10 can be rotated to the folding position. Thereafter, when the operation lever 17 is returned to the non-operation position, the lock mechanism 20 returns to the state shown in FIG.

As described above, according to the present embodiment, the pawl 24 and the rotation preventing member 25 are engaged with both the engaging surfaces 22c and 22d of the engaging protrusion 22b of the hook 22 after the lock is completed, and stops at that position. The rattling of the hook 22 after locking is reliably prevented.
Moreover, since only the hook 22 is in contact with the striker 101 at the time of locking, the member that needs to pay attention to the relative positional relationship with the striker 101 at the time of locking when the folding sheet 10 is attached to the floor surface 100 is the hook 22. Therefore, it is not necessary to consider the relative positional relationship of the other members with the striker 101. Therefore, the folding sheet 10 can be easily attached to the floor surface 100 as compared with the conventional case.

  In the present embodiment, the lock mechanism 20 of the present invention is provided on the folding sheet 10, but the present invention is not limited to the present embodiment and can be implemented in various modes. For example, the lock mechanism 20 is provided on a vehicle door (not shown) as a rotating member, and when the vehicle door is fully closed, the striker protruding from the vehicle body is locked by the lock mechanism 20 so that the vehicle door is fully closed. You may make it hold | maintain. Further, the lock mechanism 20 is provided at the bottom of a seat (detachable member) (not shown) that can be attached to and detached from the floor surface 100, and when the seat is attached to the floor surface, the lock mechanism 20 is attached to the vehicle floor surface 100. A projecting striker may be locked. Furthermore, a locker 20 may be provided on the vehicle body side by projecting a striker on the rotating member side or the detachable member side. In addition, an engagement pin may be provided on the rotation prevention member 25 side and an engagement hole may be provided on the pole 24 side to constitute a link means for the pole 24 and the rotation prevention member 25. Further, the tension spring S1 and the torsion coil spring S2 may be implemented in place of urging means having another structure having the same function as these.

It is a side view which shows the state which has the folding sheet | seat to which this invention is applied in a use position. It is a side view which shows the state which has a folding sheet | seat in a folding position. It is an enlarged side view of the lock mechanism in the unlocked state. It is a side view when a striker begins to enter the lock mechanism in the unlocked state. It is a side view of a lock mechanism when a striker further enters. It is a side view just before a locking mechanism will be in a locked state. It is a side view of the lock mechanism in a locked state. It is a side view of the lock mechanism in the middle of shifting from the locked state to the unlocked state. It is a side view when a lock mechanism further transfers to the unlocked state side. It is a side view which shows the state by which the lock | rock of the striker by the lock mechanism was cancelled | released. It is sectional drawing which follows the XI-XI line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Vehicle floor surface 101 Striker 10 Folding sheet | seat (rotating member)
DESCRIPTION OF SYMBOLS 11 Seat part 12 Backrest 13 Upper rail 14 Lower rail 14a Notch groove 14b Side wall 15 Rotating shaft 16 Bracket 17 Operation lever 20 Lock mechanism (vehicle locking device)
21 Rotating shaft 22 Hook 22a Engaging groove 22b Engaging projection 22c 22d Locking surface 23 Rotating shaft 24 Pole 24a Locking portion 24b Engaging pin (linking means)
25 Anti-rotation member 25a Engagement hole (linkage means)
25b Stopper portion 25c Locking hole S1 Tension spring S2 Torsion coil spring (biasing means)
S2a S2b End W Operation wire

Claims (6)

In a vehicle locking device, in which a striker and a lock mechanism that can be engaged with and disengaged from the striker are provided on one and the other of a vehicle body and a rotating member that is rotatable with respect to the vehicle body or a detachable detachable member. ,
A lock position for gripping the striker, a lock release position for releasing the striker, and a hook that can be rotated beyond the lock position to an overstroke position opposite to the lock release position;
An engagement position that engages with the hook at the lock position and prohibits the hook from rotating toward the unlock position, and allows the hook to rotate toward the unlock position away from the hook A pole that can rotate between a non-engaging position and
It is a separate member from the pole , and when the pole engages with the hook in the engagement position, the hook engages with the hook and prohibits the hook from rotating to the overstroke position side. Is allowed to rotate to the unlocked position, and when the pawl is in the non-engaged position, the engagement with the hook is released and the hook is allowed to rotate to the overstroke position side. A vehicle locking device comprising: a rotation preventing member. The vehicle locking device according to claim 1,
When the hook rotates from the unlock position to the lock position, the pole rotates to the engagement position after the hook moves from the lock position to the overstroke position. A vehicle locking device that engages with the hook by moving from an overstroke position to the locking position. The vehicle locking device according to claim 1 or 2,
Coupling means that links the pawl and the anti-rotation member and rotates the anti-rotation member while being delayed in the direction of engagement with the hook when the pawl rotates from the non-engagement position side to the engagement position side. A vehicle locking device comprising: The vehicle locking device according to claim 3,
The rotation preventing member is rotatable about a common rotation axis with the pole;
The linking means is adapted to be relatively movable in an arc direction centered on the common rotation axis, which is provided on one side of the pole or the anti-rotation member and protrudes on the other side. A vehicle locking device that is an engaging pin that engages with a hole. The vehicle locking device according to claim 4,
The rotation preventing member is rotatable between an engagement position where the rotation prevention member engages with the hook and a non-engagement position where the engagement with the hook is released;
When the anti-rotation member is positioned closer to the non-engagement position than the predetermined position within the rotatable range, the anti-rotation member is urged to rotate toward the non-engagement position, and the engagement is performed from the predetermined position. A vehicle locking device comprising urging means for urging the rotation preventing member to rotate toward the engagement position when positioned on the position side. The vehicle locking device according to any one of claims 1 to 5,
A vehicle locking device in which the lock mechanism is provided on a folding sheet that is rotatably supported on a floor surface in a vehicle, and the striker is projected from the floor surface.

Images