JP6482905B2 - Vehicle latch device - Google Patents

Description

  The present invention relates to a vehicle latch device that engages with or disengages from a rod-shaped portion.

  Conventionally, as a vehicle latch device, a latch that can be rotated between a lock position and an unlock position, a swingable lock member that holds the latch in the lock position, and a bias member that biases the lock member toward the latch. A coil spring, a first link rotatably connected to the lock member, a second link rotatably connected to the first link, and a torsion spring spanned between the second link and the latch. What is provided is known (see Patent Document 1). In this structure, the latch is held at the lock position by the lock member, and is held at the lock release position by being biased by the torsion spring.

JP 2010-195369 A

  However, in the prior art, in order to hold the latch in both the locked position and the unlocked position, a plurality of parts are combined in a complicated manner, so that the cost is increased and the assembly work of the vehicle latch device is complicated. There was a problem of becoming.

  Accordingly, an object of the present invention is to reduce the cost and facilitate the assembling work by simply configuring the structure for holding the latch at the locked position and the unlocked position.

The present invention that solves the above-described problems is a vehicle latch device that engages with or disengages from a rod-shaped portion, a housing, a lock position that engages with the rod-shaped portion, and an unlock position that disengages from the rod-shaped portion. A latch that is supported by the housing so as to be rotatable, a lever that is rotatably supported by the housing and has a latch engaging portion that engages with the latch, and one end of the lever that is engaged with the lever. And an urging member whose other end is supported by the housing.
The vehicle latch device is configured such that a direction of a biasing force applied to the lever from the biasing member is switched while the latch moves between the lock position and the unlocking position, so that the biasing member can The latch is configured to be biased to both the locked position and the unlocked position.

  According to this configuration, since the direction of the urging force applied from the urging member to the lever is switched while the latch moves between the lock position and the unlocking position, the urging force applied from the urging member to the latch via the lever is switched. The direction of the force can be switched, and the latch can be biased and held in both the locked position and the unlocked position. Therefore, according to this configuration, the latch can be held at both the lock position and the lock release position with a simple configuration such as a lever and a biasing member, so that the cost can be reduced and the assembly work can be facilitated. it can.

  In the above-described configuration, one end of the biasing member that engages with the lever connects the other end of the biasing member and the rotation center of the lever when the latch is located at the lock position. It is arranged on one side with respect to the line, and when the latch is located at the unlocked position, it may be arranged on the other side with respect to the line.

  According to this, when one end of the biasing member is disposed on one side with respect to a line connecting the other end of the biasing member and the rotation center of the lever, the biasing member is latched via the lever. The latch can be favorably held in the lock position. When one end of the urging member is arranged on the other side with respect to the line, the urging member urges the latch to the unlock position via the lever, so that the latch is held well in the unlock position. Can do.

  In the above-described configuration, when the lever is further provided with a pulling member that rotates the latch toward the unlocked position by pulling the lever, the lever is a pulling member engagement to which the pulling member is directly attached. May have a part.

  According to this, compared with the structure which provides a member between a lever and a traction member, a structure can be simplified, for example.

  Further, in the above-described configuration, a first line segment that connects the pivot center of the lever and the latch engaging portion, and a second line segment that connects the pivot center of the lever and the pulling member engaging portion. You may cross.

  According to this, for example, the direction of the force applied from the traction member to the lever and the lever to the latch as compared with the structure in which the pivot center of the lever, the latch engagement portion, and the traction member engagement portion are arranged in a straight line The direction of the force to be applied can be freely set.

  In the above-described configuration, the lever may include a biasing member engaging portion that engages with one end of the biasing member between the first line segment and the second line segment. .

  According to this, compared with the structure which provides the biasing member engaging part in the site | part which is not between a 1st line segment and a 2nd line segment, for example, a lever can be reduced in size.

  In the above-described configuration, the lever includes a first arm that extends in a radial direction from the rotation center of the lever, and a second arm that extends in a direction different from the first arm from the rotation center of the lever. When it is L-shaped, a corner between the first arm and the second arm may be the urging member engaging portion.

  According to this, compared with the structure which provides protrusion etc. as an urging | biasing member engaging part, the shape of a lever can be simplified, for example.

  In the above configuration, the latch may have a protrusion, and the latch engaging portion may be an opening that engages with the protrusion.

  According to this, a latch and a lever can be engaged favorably.

  In the above-described configuration, the protrusion may be configured to slide on the inner surface of the opening when the latch rotates from the lock position to the lock release position.

  According to this, since the protrusion can be pressed on the inner surface while sliding the protrusion on the inner surface of the opening, the latch can be favorably rotated from the lock position to the unlock position.

  In the above-described configuration, the opening has a plurality of corners, the protrusion is held at the first corner of the opening at the locked position, and the second of the opening at the unlocked position. It may be configured to be held at the corners.

  According to this, the latch can be satisfactorily held at the locked position and the unlocked position by the corners of the opening.

  Further, in the above-described configuration, the opening has a third corner between the first corner and the second corner, and the protrusion has the latch from the locked position to the unlocked position. It may be configured to engage with the third corner during the rotation.

  According to this, in the middle of moving the latch, the projection is engaged with the third corner, so that a good operating feeling can be given to the occupant operating the latch.

  In the above-described configuration, the protrusion may be provided between the rotation center of the latch and the rotation center of the lever.

  According to this, since the length from the rotation center of the lever to the latch engaging portion can be shortened, the lever can be miniaturized.

  According to the present invention, since the latch can be held in both the lock position and the unlock position with a simple configuration such as a lever and a biasing member, the cost can be reduced and the assembly work can be facilitated.

  According to the present invention, the biasing member is configured such that one end of the biasing member is arranged on one side and the other side with respect to a line connecting the other end of the biasing member and the rotation center of the lever. By the member, the latch can be biased and held in both the lock position and the unlock position.

  According to the present invention, by directly attaching the traction member to the lever, the configuration can be simplified as compared with, for example, a configuration in which a member is provided between the lever and the traction member.

  According to the present invention, by intersecting the first line segment connecting the pivot center of the lever and the latch engaging portion and the second line segment connecting the pivot center of the lever and the traction member engaging portion, The direction of the force applied from the pulling member to the lever and the direction of the force applied from the lever to the latch can be freely set.

  According to the present invention, the biasing member engaging portion is provided between the first line segment and the second line segment, so that, for example, the biasing member engagement is provided at a portion not between the first line segment and the second line segment. The lever can be downsized as compared with the structure in which the joint portion is provided.

  According to the present invention, the corner between the first arm and the second arm of the L-shaped lever is used as the biasing member engaging portion, so that, for example, a protrusion or the like is provided as the biasing member engaging portion. The shape of the lever can be simplified compared to

  According to the present invention, it is possible to satisfactorily engage the latch and the lever by providing the latch with the protrusion and using the latch engaging portion as the opening for engaging the protrusion.

  According to the present invention, since the protrusion is configured to slide on the inner surface of the opening, the protrusion can be pressed on the inner surface while sliding the protrusion on the inner surface of the opening. It is possible to favorably rotate from the position to the unlocked position.

  According to the present invention, by providing the opening with the first corner and the second corner for holding the protrusion, the latch can be satisfactorily held in the locked position and the unlocked position by each corner of the opening. it can.

  According to the present invention, by providing the opening with the third corner that engages with the protrusion while moving the latch, it is possible to give a good feeling of operation to the occupant operating the latch. .

  According to the present invention, since the protrusion is provided between the rotation center of the latch and the rotation center of the lever, the length from the rotation center of the lever to the latch engagement portion can be shortened. Can be miniaturized.

1 is a side view showing a vehicle seat to which a vehicle latch device according to an embodiment of the present invention is attached. It is a side view which shows the operation | movement which folds and accommodates the vehicle seat. They are the side view (a) which shows the latch apparatus for vehicles when a latch is located in a locked position, and the enlarged view (b) which expands and shows an opening part. They are a side view (a) which shows the vehicle latch apparatus when a latch exists between a lock position and a lock release position, and an enlarged view (b) which expands and shows an opening part. They are the side view (a) which shows the latch apparatus for vehicles when a latch is located in a lock release position, and the enlarged view (b) which expands and shows an opening part.

  Hereinafter, an embodiment of a vehicle latch device according to the present invention will be described with reference to the accompanying drawings. The vehicle latch device of one embodiment is provided in a seat cushion S1 of a vehicle seat S such as an automobile as shown in FIG. In the present embodiment, front and rear, left and right, and top and bottom are based on a passenger sitting on the vehicle seat S.

  The vehicle latch device 1 fixes the vehicle seat S to the floor F by locking it to the striker 90 fixed to the fixed surface F1 of the vehicle floor F, and releases the lock with the striker 90 for the vehicle. The sheet S is released from the floor F. The vehicle latch device 1 is configured to be switched from a locked state to a released state by operation of an operation lever S11 provided on the vehicle seat S.

  In the present embodiment, the rear end side of the seat cushion S1 of the vehicle seat S is rotatably supported on the floor F, and the vehicle latch device 1 provided at the front end portion of the seat cushion S1 is in a released state. The vehicle seat S can be rotated backward. Specifically, the vehicle seat S can be accommodated in the rear accommodating portion F2 by being rotated rearward after the seat back S2 is folded so as to overlap the seat cushion S1 (see FIG. 2). ).

  As shown in FIG. 3A, the vehicle latch device 1 includes a housing 10, a latch 20 that can be engaged with the rod-like portion 91 of the striker 90, a lever 30 that is engaged with the latch 20, and an urging member. A tension spring 40 as an example, and a wire 50 as an example of a pulling member.

  The housing 10 includes a first shaft 11 that rotatably supports the latch 20, a second shaft 12 that rotatably supports the lever 30, and a third shaft 13 that rotatably supports the tension spring 40. have.

  The latch 20 is a member that engages and disengages the rod-shaped portion 91 of the striker 90 and locks or unlocks the vehicle latch device 1. The latch 20 engages with the rod-shaped portion 91 (the position shown in FIG. 3A). ) And a lock release position (position shown in FIG. 5A) that is disengaged from the rod-shaped portion 91. Here, the striker 90 is formed by bending a cylindrical metal member into a U shape, and the bottom portion of the U shape is a rod-like portion 91 that engages with the latch 20. The housing 10 includes a first restricting portion 14 for restricting the latch 20 that rotates clockwise in the figure at the lock position, and a latch 20 that rotates counterclockwise in the figure at the unlock position. The second restricting portion 15 is provided.

  The latch 20 includes a metal latch main body 20A and a resin cover 20B that covers the left and right surfaces and a part of the outer peripheral surface of the latch main body 20A and is more flexible than the latch main body 20A. The latch body 20A is formed by punching a thick metal plate, and has a first hole portion 21 that penetrates in the thickness direction. The first hole portion 21 is fitted to the outside of the first shaft 11, so that the latch 20 is The housing 10 is rotatably supported. The cover 20B is provided to suppress sound and vibration during operation of the latch body 20A.

  The latch 20 has a groove 22 that receives the rod-shaped portion 91, and a portion that forms the outside of the groove 22 (the side far from the rotation center X of the latch 20) is a hook portion 23, and faces the hook portion 23. The portion is an extended portion 24 extending from the vicinity of the first hole portion 21. The extending portion 24 is disposed slightly above the rod-shaped portion 91 when the latch 20 is in the locked position, and is rod-shaped when the latch 20 is rotated from the locked position toward the unlocked position. It comes into contact with the portion 91 from above.

  A cylindrical projection 25 as an example of an engaging portion protruding in the left-right direction is formed on the opposite side of the extending portion 24 across the rotation center X of the latch 20. The protrusion 25 is provided between the rotation center X of the latch 20 and the rotation center Y of the lever 30.

  Specifically, the protrusion 25 is always disposed between the rotation center X and the rotation center Y in the front-rear direction until the latch 20 rotates from the lock position to the lock release position. The protrusion 25 may be formed integrally with the metal latch body 20A, or may be formed integrally with the resin cover 20B.

  The lever 30 is supported by the second shaft 12 of the housing 10 so as to be rotatable between a lock direction biasing position shown in FIG. 3A and a release direction biasing position shown in FIG. 5A. Has been. The lever 30 includes a first arm 31 extending in the radial direction from the rotation center Y and a second arm extending from the rotation center Y in a direction different from the first arm 31, specifically in a direction intersecting the first arm 31. It has an L shape having an arm 32. More specifically, the second arm 32 extends in a direction orthogonal to the first arm 31.

  In other words, a first line segment L1 connecting a predetermined position of the engagement hole 32A described later and the rotation center Y and a second line segment L2 connecting a predetermined position of the opening 33 described later and the rotation center Y are: Crossed. Specifically, the first line segment L1 is a line segment from the part of the engagement hole 32A that is farthest from the rotation center Y to the rotation center Y, and the second line segment L2 is the rotation of the opening 33. This is a line segment from the part farthest from the moving center Y to the rotation center Y.

  An opening 33 as an example of a latch engaging portion that engages with the protrusion 25 of the latch 20 is formed at the distal end portion of the first arm 31. As shown in FIG. 3B, the opening 33 is a pentagonal hole penetrating left and right, and has a flat first surface 33A, second inner surface 33B, third inner surface 33C, and fourth. The inner surface 33D and the fifth inner surface 33E.

  The first inner surface 33 </ b> A is in contact with the rear side of the protrusion 25 when the latch 20 is in the locked position, and the lower end thereof is positioned at a position below the protrusion 25. When the latch 20 is in the locked position, the second inner surface 33B is disposed below the protrusion 25 and extends from the lower end of the first inner surface 33A toward the front obliquely lower side.

  When the latch 20 is in the locked position, the third inner surface 33C is disposed away from the lower front of the protrusion 25 and extends from the lower end of the second inner surface 33B toward the upper front side. When the latch 20 is in the locked position, the fourth inner surface 33D is disposed away from the front of the protrusion 25 and extends obliquely upward from the front end of the third inner surface 33C. The fifth inner surface 33E is in contact with the upper side of the protrusion 25 when the latch 20 is in the locked position, and is connected in the front-rear direction so as to connect the upper end of the fourth inner surface 33D and the upper end of the first inner surface 33A. Extending along.

  The first corner A1 formed between the first inner surface 33A and the fifth inner surface 33E is a portion for holding the projection 25 at the lock position, and is disposed on the rear obliquely upper side of the projection 25 at the lock position. Has been. The second corner A2 formed between the third inner surface 33C and the fourth inner surface 33D is for holding the protrusion 25 in the unlocked position as shown in FIGS. 5 (a) and 5 (b). It is a part and is arranged on the front side of the protrusion 25 at the unlocking position. In other words, the third inner surface 33 </ b> C is disposed on the obliquely lower front side of the protrusion 25 in the unlocked position.

  In the present embodiment, the fourth corner A4 formed between the fourth inner surface 33D and the fifth inner surface 33E is not engaged with the protrusion 25 at the locked position, but is engaged. It may be configured.

  As shown in FIG. 3B, the third corner A3 formed between the second inner surface 33B and the third inner surface 33C is the first in the moving direction of the protrusion 25 moving in the opening 33. It arrange | positions between 1 corner A1 and 2nd corner A2. As shown in FIGS. 4A and 4B, the third corner A3 is configured to engage with the protrusion 25 while the latch 20 is rotating between the locked position and the unlocked position. Yes.

  Note that the fifth corner A5 formed between the first inner surface 33A and the second inner surface 33B is a portion that does not engage with the protrusion 25 that moves in the opening portion 33, and thus does not need to be provided. . That is, even if the opening 33 is formed in such a shape that the first corner A1 to the third corner A3 are connected by a gentle cross-sectional arc-shaped surface and the fifth corner A5 is not formed. Good.

  As shown in FIG. 3A, an engagement hole 32 </ b> A as an example of a pulling member engagement portion to which the distal end portion of the wire 50 is directly attached is formed at the distal end portion of the second arm 32. A member formed in a columnar shape is provided at the distal end portion of the wire 50, and the member is rotatably attached to the engagement hole 32A.

  A corner portion 34 between the first arm 31 and the second arm 32 is a biasing member engaging portion that engages with one end of the tension spring 40. That is, the corner 34 is between the first line segment L1 and the second line segment L2, more specifically, the first line segment L1 and the second line segment L2, and the first line segment L1 and the second line segment L2. Are arranged in a triangular area surrounded by a line connecting the opening 33 (line connecting the opening 33 and the engagement hole 32A: not shown).

  One end of the tension spring 40 is engaged with the corner portion 34 of the lever 30, and the other end is rotatably supported by the third shaft 13 of the housing 10. One end of the tension spring 40 that engages with the lever 30 is on the front side with respect to a line L3 that connects the other end of the tension spring 40 and the rotation center Y of the lever 30 when the latch 20 is located at the lock position. When the latch 20 is located at the unlocking position, it is arranged on the rear side with respect to the line L3 (see FIG. 5A).

  That is, the position of the third shaft 13 is set with respect to the position of the corner portion 34 of the lever 30 so that the relationship between the one end of the tension spring 40 and the line L3 becomes the relationship described above. By setting the position of each member in this way, the tension spring 40 urges the latch 20 toward the lock position when the latch 20 is in the lock position, and the latch 20 is in the unlock position. The latch 20 is urged toward the unlocking position when positioned at the position.

  The wire 50 is a member for rotating the latch 20 toward the unlocking position by applying a pulling force to the second arm 32 of the lever 30. One end of the wire 50 is an engagement hole of the lever 30. 32A is engaged, and the other end is engaged with the operation lever S11 shown in FIG.

Next, the operation of the vehicle latch device 1 will be described in detail.
As shown in FIG. 1, when the occupant pulls the operation lever S11 rearward when the vehicle latch device 1 is in the locked state, the force is applied via the wire 50 to the lever 30 shown in FIG. Is transmitted to. As a result, the lever 30 rotates in the clockwise direction in the figure against the urging force of the tension spring 40.

  When the lever 30 rotates in the clockwise direction in the drawing, the second inner surface 33B of the opening 33 abuts on the protrusion 25 and pushes the protrusion 25 upward while sliding on the protrusion 25. As a result, the latch 20 rotates counterclockwise in the figure.

  When the protrusion 25 moves on the second inner surface 33B, as shown in FIGS. 4A and 4B, if one end of the tension spring 40 gets over the line L3 from the front to the rear, The direction of the urging force applied from the spring 40 to the lever 30 is switched from the counterclockwise direction shown in the figure to the clockwise direction shown in the figure. As a result, even if the occupant then releases the operation lever S11, the lever 30 is rotated clockwise by the biasing force of the tension spring 40, and the latch 20 is unlocked by the lever 30 thus rotated. Rotate towards

  When the protrusion 25 moves to the lower end side of the inner surface 33B, it engages with the third corner A3. Thereby, the passenger | crew who operates operation lever S11 can feel favorable click feeling by engagement with the protrusion 25 and 3rd corner A3.

  In addition, after the extended portion 24 of the latch 20 comes into contact with the rod-shaped portion 91 by the rotation of the latch 20, the latch 20 is moved upward along with the housing 10 by the reaction force that the extended portion 24 receives from the rod-shaped portion 91. Move to. When the front end portion of the seat cushion S1 is urged upward by a spring (not shown), the latch 20 moves upward together with the casing 10 by the urging force of the spring, so that the extending portion 24 is It rotates without being caught by the rod-shaped part 91.

  Thereafter, when the passenger further pulls the operation lever S11, the protrusion 25 is lifted by the inner surface 33C while sliding on the third inner surface 33C. Then, as shown in FIGS. 5A and 5B, the latch 20 abuts against the second restricting portion 15, and the protrusion 25 engages and is held at the second corner A2, whereby the latch 20 Is held in the unlocked position.

  Thereafter, even when the occupant releases the hand from the operation lever S11, the lever 30 urges the latch 20 toward the unlock position by the urging force of the tension spring 40, so that the latch 20 is held in the unlock position satisfactorily. Is done. For this reason, the occupant releases the operation lever S11 and operates the vehicle seat S after unlocking, specifically, the operation of folding the vehicle seat S described above and storing it in the storage portion F2 of the floor F. Can be easily performed.

  Further, when returning the vehicle seat S accommodated in the accommodating portion F2 by the occupant to the original position, the occupant lifts the folded vehicle seat S upward from the accommodating portion F2, and then tilts it forward. At this time, as shown in FIG. 5 (a), when the extending portion 24 of the latch 20 comes into contact with the rod-shaped portion 91 with a certain amount of force, the latch 20 receiving the reaction force from the rod-shaped portion 91 rotates clockwise in the figure. Rotate.

  As a result, the protrusion 25 pushes down the third inner surface 33C of the opening 33, so that the lever 30 rotates counterclockwise in the figure against the biasing force of the tension spring 40. Thereafter, the protrusion 25 moves from the third inner surface 33C to the second inner surface 33B.

  And while the protrusion 25 is moving on the second inner surface 33B, as shown in FIGS. 3A and 3B, when one end of the tension spring 40 gets over the line L3 from the rear to the front, The direction of the urging force applied from the tension spring 40 to the lever 30 is switched from the clockwise direction in the figure to the counterclockwise direction in the figure. As a result, the lever 30 is rotated counterclockwise by the biasing force of the tension spring 40 to bias the latch 20 toward the lock position. The latch 20 abuts on the first restricting portion 14, and the protrusion 25 is engaged and held in the first corner A1, whereby the latch 20 is held in the locked position.

According to the above, the following effects can be achieved in the vehicle latch device 1 of the present embodiment.
Since the latch 20 can be held in both the locked position and the unlocked position with a simple configuration such as the lever 30 and the tension spring 40, the cost can be reduced and the assembling work can be facilitated.

  Since the wire 50 is directly attached to the lever 30, the configuration can be simplified as compared with a configuration in which a member is provided between the wire and the lever, for example.

  Since the first line segment L1 and the second line segment L2 cross each other, for example, the rotation center of the lever, the opening, and the engagement protrusion are added from the wire 50 to the lever 30 as compared with a structure in which the lever is aligned. The direction of the force and the direction of the force applied from the lever 30 to the latch 20 can be freely set.

  Since the corner portion 34 as the urging member engaging portion is provided between the first line segment L1 and the second line segment L2, for example, the urging member is not located between the first line segment and the second line segment. The lever 30 can be reduced in size compared with the structure in which the engaging portion is provided.

  Since the corner portion 34 of the lever 30 is an urging member engaging portion, the shape of the lever 30 can be simplified as compared with, for example, a configuration in which a protrusion or the like is provided as the urging member engaging portion.

  Since the opening 33 formed in the lever 30 is engaged with the protrusion 25 of the latch 20, the latch 20 and the lever 30 can be satisfactorily engaged.

  Since the protrusion 25 is pressed by the inner surfaces 33B and 33C while sliding the protrusion 25 on the inner surfaces 33B and 33C of the opening 33, the latch 20 can be favorably rotated from the locked position to the unlocked position.

  By holding the protrusion 25 at the first corner A1 or the second corner A2 of the opening 33, the latch 20 can be favorably held at the locked position or the unlocked position.

  While the latch 20 is being moved, the protrusion 25 engages with the third corner A3, so that a good feeling of operation can be given to the occupant operating the latch 20.

  Since the protrusion 25 is provided between the rotation center X of the latch 20 and the rotation center Y of the lever 30, the length of the first arm 31 can be shortened and the lever 30 can be downsized. .

  Although the embodiments of the present invention have been described above, the present invention can be implemented with appropriate modifications as shown in other embodiments below.

  In the above embodiment, the lever 30 is formed in an L shape. However, the present invention is not limited to this, and for example, the lever can have various shapes such as a rod shape, a circular shape, and a fan shape.

  In the embodiment, the opening 33 is illustrated as the latch engaging portion, but the present invention is not limited to this. For example, the latch engaging portion may be a protrusion that engages with a recess formed in the latch. . Further, the opening 33 is not limited to the through hole as in the above embodiment, and may be a hole with a bottom, for example.

  In the embodiment, the tension spring 40 is exemplified as the biasing member. However, the present invention is not limited to this, and the biasing member may be a push spring, a torsion spring, or the like.

  In the embodiment, the wire 50 is illustrated as an example of the pulling member, but the pulling member may be, for example, a rod.

  In the embodiment, the engagement hole 32A is exemplified as the traction member engagement portion. However, the present invention is not limited to this, and for example, the traction member engagement portion may be a hole or a hook.

  In the embodiment, the corner portion 34 is exemplified as the urging member engaging portion. However, the present invention is not limited to this, and for example, the urging member engaging portion may be a protrusion or a hole.

  In the embodiment, the latch 20 is brought into contact with the first restricting portion 14 or the second restricting portion 15 so that the latch 20 is favorably held in the locked position or the unlocked position. However, the present invention is limited to this. The first restricting portion 14 and the second restricting portion 15 are not necessarily provided. Further, by providing a restricting portion for restricting the lever 30 at the lock direction biasing position and a restricting portion for restricting the lever 30 at the release direction biasing position, the latch 20 is configured to be favorably held at the lock position or the unlock position. May be.

  In the above embodiment, the vehicle latch device 1 is provided in the seat cushion S1 of the vehicle seat S such as a vehicle, but the vehicle latch device may be provided in the seat back S2 of the vehicle seat S. It can also be used as a device for locking an opening / closing part such as a trunk of a vehicle. The vehicle seat S may also be a ship or airplane seat other than a vehicle.

DESCRIPTION OF SYMBOLS 1 Vehicle latch apparatus 10 Housing | casing 20 Latch 30 Lever 33 Opening part 40 Tensile spring 91 Rod-shaped part

Claims (11)

A vehicle latch device that engages or disengages from a rod-shaped portion,
A housing,
A latch that is supported by the housing so as to be rotatable to a lock position that engages with the rod-shaped portion and a lock-release position that disengages from the rod-shaped portion;
A lever that is rotatably supported by the housing and has a latch engaging portion that engages with the latch;
A biasing member having one end engaged with the lever and the other end supported by the housing;
When the direction of the urging force applied to the lever from the urging member is switched while the latch moves between the lock position and the unlocking position, the urging member causes the latch to move from the lock position to the lock position. The vehicle latch device is configured to be biased to both of the unlocking positions. One end of the urging member engaged with the lever is on one side with respect to a line connecting the other end of the urging member and the rotation center of the lever when the latch is located at the lock position. 2. The vehicle latch device according to claim 1, wherein the vehicle latch device is disposed on the other side of the line when the latch is located at the unlocked position. A pulling member that rotates the latch toward the unlocked position by pulling the lever;
The vehicle latch device according to claim 1, wherein the lever includes a traction member engaging portion to which the traction member is directly attached.   A first line segment connecting the pivot center of the lever and the latch engaging portion intersects with a second line segment connecting the pivot center of the lever and the traction member engaging portion. The vehicle latch device according to claim 3.   The vehicle according to claim 4, wherein the lever includes a biasing member engaging portion that engages with one end of the biasing member between the first line segment and the second line segment. Latch device. The lever has an L shape having a first arm extending in a radial direction from a rotation center of the lever and a second arm extending in a direction different from the first arm from the rotation center of the lever.
6. The vehicle latch device according to claim 5, wherein a corner portion between the first arm and the second arm serves as the biasing member engaging portion. The latch has a protrusion;
The vehicle latch device according to any one of claims 1 to 6, wherein the latch engaging portion is an opening that engages with the protrusion.   8. The vehicle latch device according to claim 7, wherein the protrusion slides on an inner surface of the opening when the latch rotates from the lock position to the lock release position. The opening has a plurality of corners;
The said protrusion is hold | maintained in the 1st corner of the said opening part in the said lock position, and is hold | maintained in the 2nd corner of the said opening part in the said lock release position. The vehicle latch device according to claim 1. The opening has a third corner between the first corner and the second corner;
10. The vehicle latch device according to claim 9, wherein the protrusion engages with the third corner while the latch rotates from the locked position to the unlocked position. 11.   The vehicle latch device according to any one of claims 7 to 10, wherein the protrusion is provided between a rotation center of the latch and a rotation center of the lever.

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