JP4619047B2 - Vehicle locking device - Google Patents

Description

  The present invention relates to a vehicle including a vehicle floor surface, a striker projecting on one side of a folding seat rotatably supported on the vehicle floor surface, and a lock mechanism provided on the other side and detachable from the striker. It relates to a locking device.

The folding seat that is rotatably supported on the vehicle floor includes a seat and a backrest that can be rotated with respect to the seat, and is used on the floor (the seat is connected to the floor). It is possible to rotate between a position that is substantially parallel) and an upright position (position where the seat is substantially perpendicular to the floor surface) that is rotated forward or backward from this use position. On the other hand, it is possible to rotate between a standing position that is substantially orthogonal to the seat portion and a folding position that is inclined forward from the standing position and is substantially parallel to the seat portion. Further, the folding seat is provided with a lock mechanism on the bottom surface of the seat portion for locking the striker protruding from the vehicle floor when the folding seat moves to the use position.
This type of locking mechanism generally has an entry groove formed in the base member provided at the bottom of the seat, a lock position that is pivotally attached to the base member and grips the striker that has entered the entry groove, and releases the striker. A hook that is rotatable between the unlocking position and the base member, and is engaged with the hook in the locking position to inhibit the hook from rotating toward the unlocking position. A pole that is pivotable between a position and a non-engagement position that allows the hook to rotate toward the unlocked position away from the hook, wherein the hook and the pole are tension springs. Therefore, the rotation is always urged toward the lock release position side and the engagement position side.

As an example of a folding sheet having such a locking mechanism, the backrest and the locking mechanism are linked by a wire or the like, and the movement of the locking mechanism is changed to the forward tilting operation of the backrest (the rotation operation from the standing position to the folding position side). ) And standing motion (rotating motion from the folded position to the standing position) and when the backrest is in the standing position, the pole is moved to the engaging position (the lock mechanism is in the locked state) Some move the pole to the disengaged position when the folding position is reached (the locking mechanism is unlocked). Thus, if the movement of the lock mechanism is linked to the movement of the backrest, an operation means (for example, an operation lever) dedicated to the lock mechanism becomes unnecessary, but there is also an inconvenience in operation.
For example, when the folding seat is rotated from the upright position to the use position and the striker is locked by the lock mechanism, the pole does not engage the hook until the backrest returns to the standing position (the locked state is maintained). Since the function does not work), the folding sheet is in an unstable state. In addition, when the backrest of the folding seat that is locked in the use position is moved to the folding position when the vehicle is running, the engagement between the pole and the hook is released, so that the folding seat stands up unexpectedly due to the vertical movement of the vehicle. There was a risk of rotating to the position side.

As a prior art that solves such a problem, there is, for example, Patent Document 1. The lock mechanism of this Patent Document 1 includes a lever that is linked via a backrest and a wire and that rotates in conjunction with a rotational movement of the backrest, and an arm that is rotatably supported by the lever. The pole has a pin protruding from the tip of the arm. When the pawl is engaged with the hook in the locked position at the engaging position, the arm and the pole are separated from each other, and when the backrest is folded from the standing position, the arm is integrated with the lever. , And while pressing the pin of the pole while rubbing at the tip, the pole is rotated to the non-engagement position, and the engagement between the pole and the hook is released. When the backrest is completely tilted, the arm and the pin are separated again, and the pole is automatically returned to the engagement position side by the biasing force of the tension spring, so when the striker and the hook are engaged again, the pole is hooked. The striker and hook are kept locked by automatically engaging with each other.
JP 2004-34768 A

In the lock mechanism of Patent Document 1, when the backrest is in the upright position, the tip of the arm and the pin are separated from each other. Therefore, the pivoting position of the pole and the lever to the base member, and the pivoting position of the arm with respect to the lever are determined. If it is not accurate, the arm cannot reliably press the pin when the backrest is folded from the upright position, and as a result, the unlocking operation becomes uncertain.
In addition, when the backrest is folded from the upright position, a time lag occurs until the arm starts to press the pin.

  Further, since the pole and the arm are pivotally attached to the base member by different rotating shafts, it is not preferable from the viewpoint of space saving, and the lock mechanism is increased in size.

  An object of the present invention is to realize a reliable and quick unlocking operation in a lock mechanism in which the backrest and the operation of the lock mechanism are interlocked and can maintain the locked state even when the backrest is in the folded state. An object of the present invention is to provide a vehicle locking device that can be further downsized.

A vehicle locking device according to the present invention includes a vehicle body; a folding seat including a seat that is rotatable with respect to the vehicle body and a backrest that is rotatable with respect to the seat; and the vehicle body and the folding seat. And a lock mechanism that can be engaged with and disengaged from the striker, wherein the lock mechanism grips the striker and a lock that releases the striker. A hook that is rotatable between a release position, an engagement position that engages with the hook at the lock position and prohibits the hook from rotating toward the lock release position, and the hook apart from the hook There was rotationally urged toward the pole pivotable, the unlocked position of the hook between a disengaged position to allow the rotation to the lock release position, said pole A first urging means that urges rotation toward the engagement position; a backrest-linked rotating member that is pivotally mounted coaxially with the pole and rotates in conjunction with the rotation of the backrest; and the backrest A pole control member pivotally mounted on the interlocking rotating member, and the pole control member is configured to rotate the backrest when the backrest returns to the standing position when the hook and the pole are engaged. The moving member and the pole are integrated in the rotation direction, and when the backrest rotates in the folding direction, the pawl is rotated together with the backrest interlocking rotation member to the non-engagement position side, and the hook and the pole are engaged. After the release is released, the integral rotation state of the pawl and the backrest interlocking rotation member is released, and the pawl is allowed to return to the engagement position by the urging force of the first urging means. It is characterized by doing.

  A recess is formed in one of the pole and the pole control member, and when the backrest is in the upright position, the backrest is fitted into the recess, the backrest rotates in the folding direction, and the pole is connected to the hook. It is practical to provide an engagement pin that escapes from the recess after releasing the engagement to constitute a means for integrating the pole and the pole control member.

  Second urging means for urging the pole control member to rotate in one direction with respect to the backrest interlocking rotating member, and the backrest interlocking rotating member rotating in conjunction with the rotation of the backrest in the folding direction. When this is done, the rotation of the pole control member is restricted by contacting the pole control member, and the pole control member is opposite to the biasing direction by the second biasing means with respect to the backrest interlocking rotation member. It is preferable to include a stopper for releasing the integrated state of the pole control member and the pole by relatively rotating in the direction.

  It is practical to provide a wire that links the backrest and the backrest-linked rotating member, and transmits a rotational force of the backrest in the folding direction to the backrest-linked rotating member.

  According to the present invention, in the lock mechanism in which the backrest and the operation of the lock mechanism are interlocked and the locked state can be maintained even when the backrest is in the folded state, a reliable and quick unlocking operation can be realized, and moreover than in the past Can be downsized.

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.
FIG.1 and FIG.2 has shown the floor surface 100 in a motor vehicle (not shown), and the folding sheet | seat 10 rotatably provided in the floor surface 100. FIG.
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, a fixing portion 15a orthogonal to the rotating shaft 15 extends, and the left and right fixing portions 15a are fixed to the front end portions of the bottom plates 14a of the left and right lower rails 14, respectively. Has been. A pair of left and right substantially triangular brackets 16 are rotatably attached to the rotary 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.

  A horizontal portion 17a of a bracket 17 having a substantially L-shape in front view (see FIG. 13) is fixed to the rear end portions of the bottom plates 14a of the left and right lower rails 14. Further, a bracket 18 having substantially the same shape as viewed from the side is disposed outside the bracket 17, and a penetrating portion 17 b of the bracket 17 and an entry groove 17 c, 18 a facing substantially up and down are formed in the bracket 18, respectively. (See FIG. 1, FIG. 2 and FIG. 14 for the entrance groove 18a). The left and right brackets 17 and 18 and their peripheral members constitute a lock mechanism 20 shown in an enlarged manner in FIGS.

Next, the structure of the lock mechanism 20 will be described.
As shown in detail in FIGS. 3 to 14, the left and right locking mechanisms 20 include a hook 22 fixed to a rotary shaft 21 rotatably supported between a hanging portion 17 b of the bracket 17 and the bracket 18, A pole 24 positioned forward and supported rotatably between the hanging portion 17b and the bracket 18 and having an outer end projecting to the outside of the bracket 18 and a rotating shaft outside the bracket 18 23 is provided with a backrest interlocking rotation member 25 attached to be rotatable around the rotation shaft 23, and a pole control member 26 pivotally attached to the backrest interlocking rotation member 25.
The hook 22 is located between the left and right brackets 17, 18, and includes an engagement groove 22 a into which the striker 101 can enter, an engagement protrusion 22 b that can be engaged with and disengaged from the pole 24, and a side surface on the hanging portion 17 b side. And a guide pin 22c projecting from the head. The hanging portion 17b is formed with an arcuate guide hole 17d centered on the rotation shaft 21 with which the guide pin 22c engages, and the rotation of the hook 22 in the counterclockwise direction is the right end surface of the guide hole 17d. The guide pin 22c is regulated at a lock release position (position shown in FIG. 5), and reaches the lock position (position shown in FIG. 3) by rotating clockwise from the lock release position. When the striker 101 is engaged with the engagement groove 22a, the hook 22 moves to the lock position, so that the hook 22 locks the striker 101.

The pole 24 is also positioned between the left and right brackets 17 and 18 (overlapping with the hook 22 in the front-rear direction), a non-engagement position where the hook 22 is not engaged (position in FIG. 7), and an intermediate portion thereof The locking portion 24a formed on the hook 22 abuts on the engagement protrusion 22b of the hook 22, and the engagement position (position in FIG. 3) that prevents the hook 22 in the lock position from rotating to the unlock position. It is possible to rotate between them. Further, an engagement pin 24 b is provided on the outer surface of the pole 24 so as to face in the left-right direction. As shown in FIG. 14, the outer bracket 18 has an arc hole 18c centered on the rotation shaft 23, and an engagement pin 24b is movably fitted in the arc hole 18c. The outer end portion of the engaging pin 24b protrudes outside the bracket 18. When the pole 24 rotates with the rotary shaft 23, the engagement pin 24b moves along the arc hole 18c in the arc hole 18c.
A tension spring (first biasing means) S1 is stretched between the hook 22 and the pole 24, and the hook 22 rotates counterclockwise in FIGS. 3 to 12 by the biasing force of the tension spring S1. The pole 24 is urged to rotate clockwise.

  On the outside of the outer bracket 18, a back-linking interlocking rotation member 25 having a substantially L shape in a side view is located, and its base end portion is supported on the outer end portion of the rotation shaft 23 so as to be relatively rotatable. . Both ends of a torsion coil spring (torsion spring) S2 are hung between the backrest interlocking rotating member 25 and the bracket 18, and the backrest interlocking rotating member 25 is shown in FIG. 3 by the urging force of the torsion coil spring S2. It is urged to rotate clockwise in FIG.

  A rotation shaft 25a penetrating the backrest interlocking rotation member 25 in the left-right direction is provided at a corner (intermediate portion) of the backrest interlocking rotation member 25 in a non-rotatable manner. As shown in FIG. 13, the intermediate portion of the pole control member 26 located between the backrest interlocking rotation member 25 and the bracket 18 is rotatably supported. The pole control member 26 includes a recess 26 a that can be engaged with and disengaged from the engagement pin 24 b of the pole 24, and a stopper surface 26 b that can be brought into contact with and separated from a stopper pin (stopper) 17 e provided on the hanging portion 17 b of the bracket 17. It has. A torsion coil spring (second urging means) S3 is attached to the rotating shaft 25a, and both ends thereof are respectively engaged with the backrest interlocking rotating member 25 and the pole control member 26, and this torsion coil spring. By the urging force of S3, the pole control member 26 is urged to rotate counterclockwise in FIGS.

  As shown in FIGS. 3 to 13, through holes 14 b and 17 f (see FIG. 13 for the through hole 17 f) are formed at positions where the bottom plate 14 a of the lower rail 14 and the horizontal portion 17 a of the bracket 17 face each other. Yes. The upper ends of the hook 22 and the pole 24 enter the inner space of the lower rail 14 through both through holes 17f and 14b.

  One end of the wire W is fixed to the outward mounting pin 25b protruding from the free end portion of the backrest interlocking rotating member 25. A substantially cylindrical wire support member 27 is supported on the inward mounting piece 18b formed at the front end portion of the outer bracket 18, and the left and right wires W pass through the inside of the wire support member 27. The other ends of the wires W are both connected to a metal frame (not shown) embedded in the backrest 12 via a linking means (not shown). Since the backrest-linked rotating member 25 is urged to rotate by the torsion coil spring S2, the wire W is always in tension regardless of the position of the backrest 12.

Next, the operation of the lock mechanism 20 configured as above will be described.
In FIG. 3, as shown in FIG. 1, the folding sheet 10 is located in a use position where the seat 11 is substantially parallel to the floor surface 100, and the backrest 12 is in the standing position shown in FIG. The lock mechanism 20 and the striker 101 are shown. As shown in the drawing, the striker 101 is engaged with the engagement groove 22a of the hook 22 in the locked position in the entry groove 17c, and the pole 24 is engaged with the engagement protrusion 22b of the hook 22 in the engagement position. The hook 22 and the striker 101 are locked. The pole control member 26 is urged to rotate counterclockwise by the torsion coil spring S3 with respect to the backrest interlocking rotation member 25, but the engagement pin 24b of the pole 24 is fitted in the recess 26a of the pole control member 26. Thus, the counterclockwise rotation of the pole control member 26 is restricted.

  In this state, when the backrest 12 rotates to the folding position (position substantially parallel to the seat portion 11) shown in FIG. 2, the wire W is pulled, and in conjunction with the movement of the wire W, the backrest interlocking rotation member 25 and The pole control member 26 rotates counterclockwise against the biasing force of the torsion coil spring S2. Then, the pole 24 integrated with the pole control member 26 via the recess 26a and the engagement pin 24b rotates counterclockwise, and as shown in FIG. 4, the locking portion 24a of the pole 24 and the hook 22 are The engagement of the engagement protrusion 22b is released. When the folding sheet 10 is rotated to the upright position side (forward) around the rotation shaft 15 in the state where the engagement between the pole 24 and the hook 22 is released in this way, the striker 101 is moved into the entrance grooves 17c and 18a and the engagement. It escapes from the groove 22a, and the hook 22 rotates to the unlocking position by the urging force of the tension spring S1 (see FIG. 5).

  When the backrest 12 is further rotated to the folding position side in the state of FIG. 5, the backrest interlocking rotation member 25 and the pole 24 are further rotated counterclockwise, and as shown in FIG. 6, the stopper surface of the pole control member 26 26b contacts the stopper pin 17e, and the rotation of the pole control member 26 around the rotation shaft 23 is restricted.

  When the backrest 12 is further rotated to the folding position side from this state, as shown in FIG. 7, the backrest interlocking rotation member 25 and the pole 24 are further rotated counterclockwise, while the pole control member 26 is rotated by the rotation shaft 25a. As a result, the recess 26a of the pole control member 26 tries to escape from the engagement pin 24b.

  When the backrest 12 is further rotated to the folding position side, as shown in FIG. 8, the backrest interlocking rotation member 25 and the pole 24 further rotate counterclockwise, and the recess 26a of the pole control member 26 is engaged with the engagement pin. 24b, and the pole control member 26 and the pole 24 are released from the integrated state. Therefore, the pole 24 is rotated in the clockwise direction by the urging force of the tension spring S1, and its rear surface is the engagement protrusion 22b of the hook 22. Abut.

  When the backrest 12 is further rotated forward and moved to the folding position, as shown in FIG. 9, the backrest interlocking rotation member 25 further rotates counterclockwise from the position of FIG. Then, when the entire folding sheet 10 is rotated around the rotation shaft 15 to an upright position that is substantially perpendicular to the floor surface 100 while the backrest 12 is held in the folded position, the folded sheet 10 is in the state shown in FIG. It becomes.

  While the backrest 12 is held in the folded position, the entire folding sheet 10 is rotated rearward about the rotation shaft 15, and when the seat 11 reaches a use position that is substantially parallel to the floor surface 100, the striker 101 is engaged. The hook 22 is rotated clockwise while engaging the mating groove 22a, and the hook 22 locks the striker 101 by reaching the lock position. Further, since the pole 24 automatically moves to the engagement position by the urging force of the tension spring S1 and engages with the engagement protrusion 22b, the striker 101 is locked by the hook 22 by the pole 24 (FIG. 10). reference).

  When the backrest 12 is rotated to the standing position side (rearward) in this state, the backrest interlocking rotating member 25 is rotated in the clockwise direction of FIG. 10 by the biasing force of the torsion coil spring S2, and pole control is performed as shown in FIG. The end of the member 26 on the concave portion 26a side starts to contact the peripheral surface of the engagement pin 24b. Then, as shown in FIG. 12, the pole control member 26 is counterclockwise with respect to the backrest interlocking rotating member 25 by the urging force of the torsion coil spring S3, with the tip thereof being in sliding contact with the peripheral surface of the engagement pin 24b. When the tip of the pole control member 26 gets over the engagement pin 24b, the engagement pin 24b is fitted into the recess 26a, and the lock mechanism 20 returns to the initial state shown in FIG.

As described above, according to the present embodiment, the lock mechanism 20 that is interlocked with the operation of the backrest 12 and can maintain the locked state even when the backrest 12 is in the folded position, the state shown in FIG. Since the pole 24 and the pole control member 26 are already integrated with each other when the backrest 12 is standing upright, the pole 24 is immediately disengaged when the backrest 12 is rotated forward with respect to the seat portion 11. Since it rotates to the position side, a quick and reliable unlocking operation can be realized.
Further, since the pawl 24 and the backrest interlocking rotary member 25 are pivotally attached to the common rotary shaft 23, the lock mechanism 20 is smaller than the conventional lock mechanism.

  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 the floor surface 100 side (the backrest interlocking rotating member 25 and the backrest 12 of the lock mechanism 20 are linked by the wire W), and the striker 101 is provided on the folding sheet 10 side. Also good. Further, the recess 26a may be provided on the pole 24 side, and the engagement pin 24b may be provided on the pole control member 26 side. Further, the tension spring S1 and the torsion coil springs S2 and S3 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 use condition of the folding sheet | seat to which this invention is applied. It is a side view which shows the folding state of a folding sheet | seat. It is an expanded side view which fractures | ruptures an outer bracket and shows a lock mechanism and striker when a folding sheet is in use. FIG. 4 is an enlarged side view showing the lock mechanism and the striker when the backrest is rotated forward from the state of FIG. 3 with the outer bracket broken. FIG. 5 is an enlarged side view showing the locking mechanism when the entire folding sheet 10 is rotated forward in the state of FIG. 4 with the outer bracket broken. FIG. 6 is an enlarged side view showing the locking mechanism when the backrest is further rotated forward from the state of FIG. 5 by breaking the outer bracket. FIG. 7 is an enlarged side view showing the locking mechanism when the backrest is further rotated forward from the state of FIG. 6 with the outer bracket broken. FIG. 8 is an enlarged side view showing the locking mechanism when the backrest is further rotated forward from the state of FIG. 7 and the integrated state of the pole control member and the pole is released, with the outer bracket broken. FIG. 9 is an enlarged side view showing the locking mechanism when the backrest is further rotated forward from the state of FIG. 8 and the backrest is moved to the folding position, with the outer bracket broken. FIG. 10 is an enlarged side view showing a state in which the entire folding sheet is returned to the use position from the state of FIG. 9 and the striker is locked by the lock mechanism by breaking the outer bracket. FIG. 6 is an enlarged side view showing the lock mechanism and the striker when the backrest is rotated to the upright position side after the striker is locked by the lock mechanism, with the outer bracket broken away. FIG. 12 is an enlarged side view showing the lock mechanism and the striker when the backrest is further rotated from the state of FIG. FIG. 4 is a cross-sectional view of the locking mechanism taken along line XIII-XIII in FIG. 3. FIG. 5 is an enlarged side view showing the lock mechanism and the striker when the folding sheet is in use, omitting the backrest interlocking rotation member and the pole control member without breaking the outer bracket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Vehicle floor surface 101 Striker 10 Folding seat 11 Seat part 12 Backrest 13 Upper rail 14 Lower rail 14a Bottom plate 14b Through hole 15 Rotating shaft 15a Fixing part 16 Bracket 17 Bracket 17a Horizontal part 17b Hanging part 17c Entrance groove 17d Guide hole 17e Stopper pin (Stopper)
17f Through-hole 18 Bracket 18a Entrance groove 18c Arc hole 20 Lock mechanism 21 Rotating shaft 22 Hook 22a Engaging groove 22b Engaging protrusion 22c Guide pin 23 Rotating shaft 24 Pole 24a Locking portion 24b Engaging pin 25 Backrest interlocking rotating member 25a Rotating shaft 25b Mounting pin 26 Pole control member 26a Recess 26b Stopper surface S1 Tension spring (first biasing means)
S2 Torsion coil spring S3 Torsion coil spring (second biasing means)
W wire

Claims (4)

A folding seat provided with a vehicle body; a seat portion rotatable with respect to the vehicle body and a backrest rotatable with respect to the seat portion; provided on one and the other of the vehicle body and the folding seat; A vehicle locking device comprising: a striker; and a lock mechanism detachable from the striker.
The locking mechanism is
A hook rotatable between a lock position for gripping the striker and an unlock position for releasing the striker;
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
First biasing means for biasing the hook toward the unlocking position and biasing the pole toward the engagement position;
A backrest-linked rotating member that is pivotally mounted coaxially with the pole and rotates in conjunction with the rotational motion of the backrest;
A pole control member pivotally mounted on the back-linking interlocking rotation member;
With
This pole control member integrates the backrest interlocking rotation member and the pole in the rotation direction when the backrest returns to the standing position when the hook and the pole are engaged, and the backrest is folded in the folding direction. When rotating to the non-engagement position side, the pawl is rotated together with the back interlocking rotating member, and after the hook is disengaged from the hook, the pawl and the back interlocking rotating member are The vehicle locking device according to claim 1, wherein the pivoting state is released and the pole is allowed to return to the engagement position by the biasing force of the first biasing means. The vehicle locking device according to claim 1,
A recess is formed in one of the pole and the pole control member, and when the backrest is in the upright position, the backrest is fitted into the recess, the backrest rotates in the folding direction, and the pole A vehicle locking device provided with an engagement pin that escapes from the recess after releasing the engagement with the hook. The vehicle locking device according to claim 1 or 2,
A second urging means for urging the pole control member to rotate in one direction with respect to the back interlocking rotation member;
When the backrest interlocking rotation member rotates in conjunction with the rotation of the backrest in the folding direction, the rotation of the pole control member is restricted by contacting the pole control member, and the pole control member is A vehicular locking device comprising: a stopper that releases the integrated state of the pole control member and the pole by rotating relative to the twist interlocking rotation member in a direction opposite to the biasing direction by the second biasing means. The vehicle locking device according to any one of claims 1 to 3,
A vehicle locking device comprising a wire that links the backrest and the backrest interlocking rotating member, and transmits a rotational force of the backrest in the folding direction to the backrest interlocking rotating member.

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