JP4655131B2 - Latch device for vehicle - Google Patents

Description

  The present invention relates to a vehicle latch device for locking a movable body such as a vehicle seat, a roof, a trunk lid, and a door at a predetermined position.

  For example, in a latch device for locking a vehicle seat at a predetermined position, a latch that can be engaged with a striker on the vehicle body side, a locking plate that engages with the latch to prevent rotation of the latch, and a latch And a cam member that applies a rotational moment in the overtravel direction. When the striker meshes with the latch, the latch is forcibly rotated to the overtravel position by the rotation of the cam member. (For example, refer to Patent Document 1).

JP-T-2006-516502

  In the latch device as described above, when the latch is in the standby position where the striker can be received, the claw portion of the locking plate and the cam portion of the cam member abut against the outer peripheral surface of the latch by the biasing force of each spring. The rotation moment in the standby direction is applied to the latch. For this reason, the rotational moment acting on the latch becomes a resistance force when the latch is rotated in the meshing direction from the standby position, and there is a problem that the load of the meshing operation when the striker is engaged with the latch becomes high.

  In view of the above problems, the present invention reduces the resistance force when the latch rotates in the meshing direction from the standby position, and enables the meshing operation when the striker engages the latch to be performed with a light force. It is an object of the present invention to provide a latch device for use.

A vehicle latch device according to the present invention includes a movable body that is movably supported by a vehicle body or a base plate that is fixed to the vehicle body, and is pivotally supported by the base plate, and the movable body or the vehicle body. A latch that rotates in a meshing direction against a biasing force of a spring from a standby position in which one of the other strikers can be received and that can be engaged with the striker, and a pivot that is pivoted on the base plate. And a locking plate having a claw portion that engages with the latch by a biasing force of a spring and prevents the latch from rotating from the meshing position to the standby position. When in the standby position, contact with a contact portion provided in a portion other than the claw portion and in a portion synchronized with the movement of the locking plate Accordingly, the locking plate has a restricting portion that can hold the locking plate in a retracted position where the claw portion does not contact the latch, and when the latch is rotated by a predetermined amount in the meshing direction from the standby position, the restricting portion is Separated from the abutment portion, the claw portion of the locking plate can be rotated in a direction in which the claw portion can engage with the latch, and the abutment portion is located at or near the standby position of the latch. When it comes into contact with the restricting portion, the direction of the force acting on the latch is directed in the centrifugal direction . With this configuration, when the latch is in the standby position, the claw portion of the locking plate does not contact the latch, reducing the resistance when the latch is rotated from the standby position in the meshing direction, and the striker is engaged with the latch. The meshing operation can be performed with light power.

A vehicle latch device according to the present invention includes a movable body that is movably supported by a vehicle body or a base plate that is fixed to the vehicle body, and is pivotally supported by the base plate, and the movable body or the vehicle body. A latch that rotates in a meshing direction against a biasing force of a spring from a standby position in which one of the other strikers can be received and that can be engaged with the striker, and a pivot that is pivoted on the base plate. A locking plate having a claw portion that engages with the latch by a biasing force of a spring and prevents the latch from rotating from the meshing position to the standby position, and is pivotally supported by the base plate. At the same time, when the latch is rotated from the standby position to the meshing position, the latch is brought into contact with the latch by a biasing force of a spring. A cam plate having a cam portion that rotates the latch toward an overtravel position beyond the meshing position, and the latch is a portion other than the claw portion when in the standby position, and the locking plate The locking plate is brought into contact with a contact portion provided in a portion synchronized with the movement of the lock plate, so that the claw portion does not contact the latch with the locking plate, and the cam plate does not contact the latch with the cam plate. Each having a restricting portion that can be held in the retracted position, and when the latch is rotated a predetermined amount in the meshing direction from the standby position, the restricting portion is separated from the contact portion, and the locking plate the cam portion of the direction of rotation and the cam plate pawl portion engageable with the latch to allow rotation of the direction that may contact with the latch, the contact portion, When the serial latch is in the standby position or its vicinity, the direction of the force acting on the latch so as to face the centrifugal direction, abuts on the regulating portion. With this configuration, when the latch is in the standby position, the claw portion of the locking plate and the cam portion of the cam plate do not come into contact with the latch, so the resistance when rotating the latch from the standby position in the meshing direction is reduced, The meshing operation when the striker is engaged with the latch can be performed with light force.

  Furthermore, in the vehicle latch device according to the present invention, one of the abutment portion and the restriction portion is formed in an arc shape centering on the pivot axis of the latch when the locking plate is in the retracted position. With this configuration, since the locking plate does not move following the rotation of the latch from the standby position in the meshing direction, the resistance when the latch is rotated from the standby position in the meshing direction can be further reduced. .

  According to the present invention, the resistance when the latch is rotated from the standby position in the meshing direction can be reduced, and the meshing operation when the striker is engaged with the latch can be performed with a light force.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a vehicle seat to which the present invention is applied, and FIGS. 2 to 8 are side views of states of the latch device according to the present invention. In the following description, the left-right direction in FIG. 1 is the “left-right direction” of the vehicle, the left in FIGS. 2 to 8 is the “front” of the vehicle, and the right is the “rear” of the vehicle.

  As shown in FIG. 1, a vehicle seat 1 constituting a movable body is attached to a floor panel of a vehicle body, and is usually locked at a seating usable position indicated by a solid line, and if necessary, a support shaft 21 is centered. And can be moved to a storage position indicated by a two-dot chain line. In order to lock the seat 1 in the use position, the latch device 2 attached to the lower portion of the seat 1 is engaged with the striker 3 fixed to the floor panel. The movable body is not limited to the seat 1 and may be a movable roof for a vehicle, a trunk lid, a door, or the like.

  As shown in FIGS. 2 to 8, the latch device 2 is engaged with the base member 4 fixed to the lower portion of the seat 1, the latch 5 that can be engaged with the striker 3 at the use position of the seat 1, and the latch 5. Possible locking plate 6, cam plate 7 for applying a rotational moment for rotating latch 5 from an engagement position (see FIG. 6) described later to an overtravel position (see FIG. 7) described later, and locking plate 6 described later And a release lever 8 for rotating in the release direction.

  In the lower center of the base member 4, a striker entry groove 41 that opens downward is provided so that the striker 3 can enter from below when the seat 1 is locked in the use position.

  The latch 5 is pivotally supported by the first pivot 9 that faces in the left-right direction obliquely upward and forward of the striker entry groove 41 in the base member 4, and has a lower side (the striker entry groove 41 on the portion overlapping with the striker entry groove 41. The first arm portion 51 on the opening side) and the second arm portion 52 on the upper side (the back side of the striker entry groove 41) are provided. Further, an upwardly extending arm portion 56 extending upward is provided with an engagement pin 57 that is separated from the latch shaft 9 in the centrifugal direction by a predetermined amount and that faces the arc portion 63 (described later) of the locking plate 6 and faces in the left-right direction. It is fixed. The engagement pin 57 forms a restricting portion in the present invention. The restricting portion in the present invention is not limited to the engaging pin 57, but may be a rotating roller or a member obtained by bending the upper end of the upward arm portion 56 in the left-right direction.

  Between the arm portions 51 and 52 of the latch 5, an engagement groove 53 that can be engaged with the striker 3 is provided. When the latch 5 is rotated to the meshing position described later, the inner edge of the rear part of the second arm part 52 straddling the striker entry groove 41 (the edge part on the side facing the first arm part 51) An engaging portion 54 that can engage with the claw portion 61 provided in the lower portion is provided.

  The latch 5 resists the urging force of the first spring 10 wound around the first pivot 9 and is engaged from the standby position (see FIG. 2) where the striker 3 can be received in the engagement groove 53 (see FIG. 2). It is turned counterclockwise), and after passing through the meshing position (see FIG. 6) where the striker 3 is engaged with the engaging groove 53 and the claw portion 61 of the locking plate 6 is engaged with the engaging portion 54 (see FIG. 6). It can be rotated to the travel position (see FIG. 7) and vice versa.

  The standby position of the latch 5 is a position where the striker 3 is not engaged with the engagement groove 53 due to the seat 1 being in the storage position, and the engagement position is the same when the striker 3 is engaged with the engagement groove 53. Further, the position where the claw portion 61 of the locking plate 6 can be engaged with the engaging portion 54, and the overtravel position are further rotated from the meshing position in the meshing direction, and the claw portion 61 of the locking plate 6 and the engaging portion 54 is a position where a gap is generated.

  The first spring 10 is latched at one end by the latch 5 and at the other end by a lateral arm portion 62 (to be described later) of the locking plate 6, and is in a standby direction (clockwise in FIGS. 2 to 8) with respect to the latch 5. A biasing force is applied to the locking plate 6 in the engaging direction (the direction in which the claw portion 61 of the locking plate 6 engages with the engaging portion 54 of the latch 5 and clockwise in FIGS. 2 to 8).

  The locking plate 6 is pivotally supported by the second pivot 11 that faces in the left-right direction obliquely upward and rearward of the striker entry groove 41 in the base member 4, and the above-described claw portion 61 is provided at the lower portion. The claw portion 61 engages with the engagement portion 54 of the latch 5 to prevent the latch 5 from rotating in the standby direction from the meshing position, and the release portion from the engagement portion 54 causes the standby direction of the latch 5 to move. Allows rotation to.

  At the front portion of the locking plate 6, a lateral arm portion 62 extending forward is provided so as to be able to overlap with the upward arm portion 56 of the latch 5 in the left-right direction. The latch 5 is in contact with the engaging pin 57 from below while the latch 5 is rotated from the standby position to a predetermined position before the meshing position and vice versa. A possible arc 63 is provided. In addition, the circular arc part 63 forms the contact part in this invention. The contact portion in the present invention is not limited to the arc portion 63. For example, when the upper end of the upward arm portion 56 is bent in the left-right direction, the contact portion is formed in a shaft shape.

  As shown in FIG. 2, when the latch 5 is in the standby position, the locking plate 6 has a pawl portion 61 against the urging force of the first spring 10 by the arc portion 63 coming into contact with the engagement pin 57. Is held at a retracted position separated from the outer peripheral surface of the latch 5 by a predetermined amount.

  The arc portion 63 is formed in an arc shape centered on the first pivot 9 in a state where the locking plate 6 is in the retracted position. Accordingly, the direction A in which the arc portion 63 abuts on the engagement pin 57 is directed from the first pivot 9 in the centrifugal direction, and thus does not act as a rotational moment on the latch 5. Therefore, while the latch 5 rotates from the standby position to a predetermined position before the meshing position, that is, while the locking plate 6 is in the retracted position, the resistance acting on the latch 5 is the engagement pin 57 and the arc portion 63. Therefore, the latch 5 can be rotated in the meshing direction from the standby position with a light force.

  The cam plate 7 is pivotally supported by the third pivot 13 facing in the left-right direction so as to overlap with the lower part of the locking plate 6 in the left-right direction behind the striker entry groove 41 in the base member 4, and the second pivot 11 It is urged in the biting direction (counterclockwise in FIGS. 2 to 8) by the urging force of the second spring 12 wound around.

  A cam portion 71 is provided at the upper edge of the cam plate 7 so as to be slidable in contact with the distal end portion 55 of the engaging portion 54 of the latch 5. A portion 72 is provided.

  The cam portion 71 is formed such that the distance from the center of the third pivot 13 gradually increases in the counterclockwise direction, and the latch 5 is in a range between the position immediately before the meshing position and the overtravel position. At this time, it can come into contact with the distal end portion 55 of the engaging portion 54 of the latch 5. Thereby, the cam plate 7 is rotated with respect to the latch 5 by rotating in the biting direction by the urging force of the second spring 12 in a state where the cam portion 71 is in contact with the distal end portion 55 of the engaging portion 54 of the latch 5. Thus, a rotational moment for rotating from the meshing position toward the overtravel position is given.

  The timing at which the cam portion 71 of the cam plate 7 abuts on the distal end portion 55 of the engaging portion 54 of the latch 5 is the same as the timing at which the claw portion 61 of the locking plate 6 engages with the engaging portion 54 of the latch 5. It is set to be slightly faster than.

  When the locking plate 6 is in the retracted position, the cam plate 7 has the protrusion 72 abutting against the locking plate 6, thereby resisting the urging force of the second spring 12, and the tip of the cam portion 71 together with the locking plate 6. Is held at a retracted position where it does not contact the outer peripheral surface of the latch 5. As shown in FIG. 2, when both the locking plate 6 and the cam plate 7 are in the retracted position, the tip 611 of the claw 61 of the locking plate 6 is more than the tip of the cam 71 of the cam plate 7. Also protrudes toward the outer peripheral surface side of the latch 5.

  The release lever 8 is pivotally mounted on the base plate 4 above the locking plate 6 by a fourth pivot shaft 14 facing in the left-right direction, and has a lower end connected to the upper end of the locking plate 6 so as to move synchronously with the locking plate 6. Is done. The rotation position of the release lever 8 varies greatly when the locking plate 6 is in the retracted position (see FIG. 2) and when it is in the engaged position (see FIGS. 6 and 7).

  The lateral arm portion 81 of the release lever 8 is connected to a strap or an operation knob (not shown) provided on the seat 1 via an operation force transmission member 15 such as a cable or a rod. In this case, when the lateral arm 81 is connected to the operation knob via the operation force transmission member 15, the position of the operation knob changes greatly between when the locking plate 6 is in the retracted position and when it is in the engaged position. Whether or not the locking plate 6 is engaged with the engaging portion 54 of the claw 61 latch 5 can be confirmed with certainty.

  When the seat 1 is in the use position, when the strap or the operation knob is pulled, the release lever 8 rotates from the standby position (see FIG. 7) in the release direction (clockwise in FIG. 7) to engage the locking plate 6. It is rotated in the release direction (counterclockwise) from the alignment position (see FIG. 7). As shown in FIG. 8, when the locking plate 6 rotates in the release direction, the claw portion 61 of the locking plate 6 is disengaged from the engaging portion 54 of the latch 5, and the protrusion 72 is locked on the cam plate 7. The cam portion 71 comes off from the latch 5 by coming into contact with the plate 6. Thereby, the rotation of the latch 5 in the standby direction is permitted. In this case, when the claw portion 61 of the locking plate 6 is rotated in the direction away from the engaging portion 54 of the latch 5, the latch 5 is in the overtravel position, and the engagement between the claw portion 61 of the locking plate 6 and the latch 5. Since the gap is provided between the mating portion 54, the claw portion 61 can be smoothly detached from the engaging portion 54 without rubbing the engaging portion 54.

Next, the meshing operation when the striker 3 in this embodiment is engaged with the latch 5 will be described.
When the seat 1 is in the retracted position, as shown in FIG. 2, the latch 5 is in a standby position where the striker 3 can be received, and the locking plate 6 has the arc portion 63 with respect to the engagement pin 57 of the latch 5. The cam plate 7 comes into contact with the rear edge of the locking plate 6 by the retracted position where the tip 611 of the hook portion 61 is separated from the outer peripheral surface of the latch 5. The leading ends of 71 are respectively held at retracted positions separated from the outer peripheral surface of the latch 5.

  When the seat 1 is moved to the use position from this state, the striker 3 enters the striker entry groove 41 of the base member 4 and the engagement groove 53 of the latch 5 as shown in FIG. When the latch 5 rotates by a predetermined amount in the meshing direction from the standby position against the urging force of the first spring 10, the outer peripheral surface of the latch 5 first comes into contact with the tip of the cam portion 71 of the cam plate 7. Then, as shown in FIG. 4, when the latch 5 further rotates in the meshing direction, the outer peripheral surface of the latch 5 then contacts the tip 611 of the hook portion 61 of the locking plate 6.

  In the present embodiment, since the arc portion 63 of the locking plate 6 is formed in an arc shape with the first pivot 9 as the center, the outer peripheral surface of the latch 5 is in contact with the tip portion 611 of the claw portion 61 of the locking plate 6. Until the contact, the engaging pin 57 of the latch 5 merely slides on the arc portion 63, and the locking plate 6 does not move from the retracted position to another position. Further, until the outer peripheral surface of the latch 5 comes into contact with the front end portion of the cam portion 71 of the cam plate 7, the engagement pin 57 of the latch 5 simply slides the arc portion 63 forward, and the cam plate 7 does not move from the retracted position to another position.

  As shown in FIG. 5, when the latch 5 further rotates in the meshing direction, the locking plate 6 and the cam plate 7 follow the urging force of the first spring 10 and the second spring 12 following the rotation of the latch 5. On the contrary, it rotates in the release direction (counterclockwise in the locking plate 6 and clockwise in the cam plate 7). When the locking plate 6 rotates in the release direction, the arc portion 63 is separated from the engagement pin 57, and at the same time, the engagement pin 57 moves out of the movement locus of the arc portion 63.

  As shown in FIG. 6, when the latch 5 further rotates in the meshing direction and reaches the meshing position, the engagement pin 57 is separated from the arc portion 63 and the locking plate 6 can freely rotate in the engagement direction. The claw portion 61 of the locking plate 6 is engaged with the engaging portion 54 of the latch 5 by the urging force of the first spring 10, and the cam portion 71 of the cam plate 7 is the tip of the engaging portion 54 of the latch 5. It contacts the part 55. Thereby, the cam plate 7 is rotated in the biting direction by the urging force of the second spring 12, and the cam portion 71 is brought into sliding contact with the tip end portion 55 of the engaging portion 54 of the latch 5, so that the latch 5 is shown in FIG. Rotate toward the overtravel position.

  When the latch 5 rotates to the overtravel position, the striker 3 is strongly sandwiched between the depth of the striker entry groove 41 and the first arm portion 51 of the latch 5. Thereby, backlash between the striker 3 and the latch 5 is suppressed.

  As described above, in the initial stage when the latch 5 is rotated from the standby position to a predetermined position before the meshing position (a period until the outer peripheral surface of the latch 5 comes into contact with the tip portion of the cam portion 71 of the cam plate 7). The resistance when the latch 5 is rotated from the standby position in the meshing direction is only the frictional resistance between the arc portion 63 and the engagement pin 57 and the urging force of the first spring 10. Thus, the resistance when rotating in the meshing direction can be reduced, and the striker 3 can be meshed with the latch 5 with light force. In addition, since the tip end portion of the cam portion 71 and the tip end portion 611 of the claw portion 61 of the locking plate 6 abut on the outer peripheral surface of the latch 5 in a stepwise manner, the overload when the latch 5 is rotated in the meshing direction is suddenly increased. There will be no increase.

FIG. 9 is a side view of a latch device according to another embodiment of the present invention.
The restricting portion of the latch 5 in this other embodiment is formed by a bent piece 58 in which the upper end portion of the upper piece portion 56 is bent in the left-right direction and the inner side surface is formed in an arc shape around the first pivot 9. It is formed. The abutting portion of the locking plate 6 is formed by an engagement pin 64 that is fixed to the distal end portion of the lateral arm portion 62 and can abut on the bent piece 58 from below. In addition, since structures other than the bending piece 58 and the engagement pin 64 are the same as the said embodiment, the same code | symbol as the said embodiment is attached | subjected to the same part, and description is abbreviate | omitted.

  When the latch 5 is in the standby position or the vicinity thereof, the engagement pin 64 abuts on the bent piece 58 so that the direction B of the force acting on the latch 5 is directed from the first pivot 9 in the centrifugal direction.

  When the latch is in the standby position shown in FIG. 9, the locking plate 6 has the engagement pin 64 abutting against the bent piece 58 of the latch 5, so that the tip 611 of the claw 61 contacts the outer peripheral surface of the latch 5. It is held in the retracted position where it does not touch. When the latch 5 rotates by a predetermined amount from the standby position in the meshing direction, the bent piece 58 slides on the engagement pin 64 and is separated from the engagement pin 64.

  In other embodiments, as in the above embodiment, when the latch 5 is at the standby position or a position near the standby position, the tip 611 of the claw 61 of the locking plate 6 and the tip of the cam 71 of the cam plate 7 are Since the latch 5 is held at the retracted position separated from the outer peripheral surface of the latch 5, it is possible to reduce resistance when the latch 5 is rotated from the standby position in the meshing direction. The latch 5 can be rotated in the meshing direction from the standby position while the locking plate 6 and the cam plate 7 are held in the retracted position.

The embodiment of the present invention has been described above, but various modifications and changes such as the following can be made without departing from the scope of the present invention.
(I) The cam plate 7 is omitted. In this case, the initial stage when the latch 5 is rotated from the standby position to a predetermined position before the meshing position is a period until the outer peripheral surface of the latch 5 comes into contact with the tip portion 611 of the claw portion 61 of the locking plate 6. It is defined as
(Ii) The contact portion is provided on the open lever 8 synchronized with the operation of the locking plate 6. That is, the contact portion may be any portion other than the locking plate 6 claw portion 61 and any portion that is synchronized with the locking plate 6.

1 is a front view of a vehicle seat to which the present invention is applied. It is a side view of a latch apparatus when the latch concerning this invention exists in a standby position. It is a side view of the latch apparatus in the middle of meshing operation. FIG. 4 is a side view of the latch device in the middle of the meshing operation in a state where the latch is also rotated in the meshing direction from FIG. FIG. 5 is a side view of the latch device in the middle of the meshing operation in a state where the latch is also rotated in the meshing direction from FIG. 4. Similarly, it is a side view of the latch device when the latch is in the meshing position. It is a side view of a latch apparatus when a latch is also in an overtravel position. It is a side view of the latch apparatus at the time of a release operation | movement similarly. It is an expansion side view of the latch device in other embodiments.

Explanation of symbols

1 sheet (movable body)
2 latch device 3 striker 4 base member 5 latch 6 locking plate 7 cam plate 8 release lever 9 first pivot 10 first spring 11 second pivot 12 second spring 13 third pivot 14 fourth pivot 15 operating force transmission member 21 Shaft 41 Striker entry groove 51 First arm portion 52 Second arm portion 53 Engaging groove 54 Engaging portion 55 Tip portion 56 Upward arm portion 57 Engaging pin (regulating portion)
58 Folding piece (Regulation)
61 Claw part 62 Lateral arm part 63 Arc part (contact part)
64 Engagement pin (contact part)
71 Cam part 72 Protrusion part 81 Lateral arm part 611 Tip part

Claims (3)

A movable body movably supported by the vehicle body or a base plate fixed to either the vehicle body;
It is pivotally supported by the base plate and rotates in the meshing direction against the biasing force of a spring from a standby position where the striker provided on either the movable body or the vehicle body can be received, and is engaged with the striker. A latch pivotable to a possible meshing position;
A locking plate pivotally supported by the base plate and engaged with the latch by a biasing force of a spring to prevent the latch from rotating from the meshing position to the standby position;
When the latch is in the standby position, it comes into contact with a contact portion provided in a portion other than the claw portion and in a portion synchronized with the movement of the locking plate, so that the claw portion causes the locking portion to move the locking plate. It has a restricting portion that can be held in a retracted position that does not contact the latch,
When the latch is rotated by a predetermined amount from the standby position in the meshing direction, the restricting portion is separated from the contact portion, and the claw portion of the locking plate is rotated in a direction in which the locking plate can be engaged with the latch. to allow,
The vehicular latch , wherein the abutting portion abuts on the restricting portion so that a direction of a force acting on the latch is directed in a centrifugal direction when the latch is at the standby position or a position in the vicinity thereof. apparatus. A movable body movably supported by the vehicle body or a base plate fixed to either the vehicle body;
It is pivotally supported by the base plate and rotates in the meshing direction against the biasing force of a spring from a standby position where the striker provided on either the movable body or the vehicle body can be received, and is engaged with the striker. A latch pivotable to a possible meshing position;
A locking plate that is pivotally supported by the base plate and that engages with the latch by a biasing force of a spring and has a claw portion that prevents the latch from rotating from the meshing position to the standby position;
While being pivotally supported by the base plate, when the latch is rotated from the standby position to the meshing position, it is brought into contact with the latch by a biasing force of a spring, and the latch is moved to an overtravel position beyond the meshing position. A cam plate having a cam portion that rotates toward the
When the latch is in the standby position, it comes into contact with a contact portion provided in a portion other than the claw portion and in a portion synchronized with the movement of the locking plate, so that the claw portion causes the locking portion to move the locking plate. A retraction position that does not contact the latch, and a restricting portion that can hold the cam plate at a retraction position where the cam portion does not contact the latch,
When the latch is rotated by a predetermined amount from the standby position in the meshing direction, the restricting portion is separated from the contact portion, and the claw portion of the locking plate is rotated in a direction in which the locking plate can be engaged with the latch. And enables rotation in a direction in which the cam portion of the cam plate can come into contact with the latch ,
The vehicular latch , wherein the abutting portion abuts on the restricting portion so that a direction of a force acting on the latch is directed in a centrifugal direction when the latch is at the standby position or a position in the vicinity thereof. apparatus. 3. The device according to claim 1, wherein one of the contact portion and the restricting portion is formed in an arc shape centering on a pivot of the latch when the locking plate is in the retracted position. A latch device for a vehicle.

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