Striker locking device and vehicle seat

Abstract

To obtain a striker lock device that can reduce the installation space required. [Solution] The striker lock device 40 includes a claw bracket 62 provided on the back movable part 20 of the vehicle seat 10 which is displaceable between an upright position and a forward-tilted position; a movable striker 46 which is rotatable relative to the back movable part 20 between a protruding position where it protrudes from the back body 18 and a stored position where it is stored in the back movable part 20, and engages with the claw bracket 62 when the back movable part 20 rotates to the upright position while in the protruding position; and a striker storage mechanism 64 which releases the engagement when the strap 100 is operated, and also restrains the movable striker 46 to the stored position when the back movable part 20 rotates from the upright position to the forward-tilted position, and releases the restraint when the back movable part 20 rotates from the forward-tilted position to the upright position.

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and particularly to a striker lock device provided in a vehicle seat.

Background Art

[0002] In the automatic storage device for a striker of a reclining seat back disclosed in Patent Document 1 below, the seat back is disposed so as to be able to recline about a hinge provided on the vehicle body. A locking device and a lock release knob for releasing the lock of the locking device are provided on this seat back. On the vehicle body side, a striker that engages with the above locking device is provided. This striker is fixed to a rotation shaft that is rotatable with respect to the vehicle body. A first pulley is provided at the rotation center of the hinge, and a second pulley is provided on the above rotation shaft. Further, a third pulley for changing the direction of the belt is provided inside the vehicle body close to the first pulley, and a belt is wound around the first pulley and the third pulley, and a belt is also wound around the third pulley and the second pulley. As a result, the striker is configured to be rotationally stored in the vehicle body in conjunction with the reclining of the seat back.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When a striker locking device is disposed on a seat back as in the above prior art, depending on the shape of the seat back, it may not be possible to secure a space for disposing the existing locking device, and new development of the locking device may be required.

[0005] The present invention aims to provide a striker lock device that can reduce the installation space required, and a vehicle seat equipped with the striker lock device. [Means for solving the problem]

[0006] A striker lock device according to a first embodiment includes: a claw bracket provided on a seat movable part of a vehicle seat which is displaceable between a first position and a second position relative to the vehicle; a movable striker provided on an adjacent part positioned adjacent to the seat movable part when the seat movable part is in the first position, which is displaceable relative to the adjacent part between a protruding position where it protrudes from the adjacent part and a stored position where it is stored in the adjacent part, which engages with the claw bracket when the seat movable part is displaced to the first position while in the protruding position; and a striker storage mechanism having an operating part that can be operated by an occupant, which releases the engagement when the operating part is operated, and which restrains the movable striker to the stored position when the seat movable part is displaced from the first position to the second position, and releases the restraint when the seat movable part is displaced from the second position to the first position.

[0007] According to the striker locking device of the first embodiment, the claw bracket is provided on the movable part of a vehicle seat that is displaceable between a first position and a second position relative to the vehicle. The movable striker is provided on an adjacent part that is positioned adjacent to the movable part of the seat when the movable part of the seat is in the first position. This movable striker is displaceable relative to the adjacent part between a protruding position where it protrudes from the adjacent part and a retracted position where it is stored in the adjacent part. When the movable part of the seat is displaced to the first position with the movable striker in the protruding position, the movable striker engages with the claw bracket. This restrains (locks) the movable part of the seat to the first position. This engagement is released when the occupant operates the control unit. This allows the movable part of the seat to be displaced from the first position to the second position. When the movable part of the seat is displaced from the first position to the second position, the movable striker is restrained in the retracted position by the striker retraction mechanism. This restraint is released when the movable part of the seat is displaced from the second position to the first position. In this striker locking device, the movable striker is displaced and engages with the claw bracket, eliminating the need for existing locking devices and allowing for space savings in installation.

[0008] The striker locking device of the second embodiment includes, in the first embodiment, a locking member that restrains the movable striker in the protruding position and releases the restraint when the operating part is operated, and a biasing member that is stretched between the locking member and the movable striker and biases the movable striker to the retracted position.

[0009] In the second embodiment of the striker locking device, when the operating part is operated, the movable striker is released from its restraint by the locking member in the protruding position, and the movable striker is displaced to the retracted position by the biasing force of the biasing member stretched between the locking member and the movable striker. In this embodiment, since the movable striker is restrained in the protruding position by the locking member when the operating part is not operated, it is possible to prevent the movable striker from being retracted unintentionally.

[0010] A striker locking device in a third embodiment, in the second embodiment, comprises a striker storage mechanism having a first lever that displaces when the seat movable part reaches the second position and when the seat movable part is displaced from the second position, a second lever that displaces when the seat movable part is displaced from the first position and when the seat movable part reaches the first position, a first cable with one end connected to the movable striker, a second cable with one end connected to the locking member, a third cable with one end connected to the movable striker and the other end connected to the first lever, a fourth cable with one end connected to the operating part, a fifth cable with one end connected to the second lever, and a junction box having a case and first and second sliders that are slidable relative to the case, with the other ends of the first and fourth cables connected to the first slider and the other ends of the second and fifth cables connected to the second slider.

[0011] According to the striker locking device of the third embodiment, one end of the first cable is connected to a movable striker, and the other end of the first cable is connected to a first slider of the junction box. One end of the second cable is connected to a locking member, and the other end of the second cable is connected to a second slider of the junction box. One end of the third cable is connected to a movable striker, and the other end of the third cable is connected to a first lever that displaces when the movable part of the seat reaches a second position and when the movable part of the seat is displaced from position 2. One end of the fourth cable is connected to an operating part, and the other end of the fourth cable is connected to a first slider of the junction box. One end of the fifth cable is connected to a second lever that displaces when the movable part of the seat is displaced from position 1 and when the movable part of the seat reaches position 1, and the other end of the fifth cable is connected to a second slider of the junction box. As a result, a striker storage mechanism is configured, and the striker storage mechanism can be made simple.

[0012] The striker lock device of the fourth embodiment is, in any one of the first to third embodiments, the adjacent portion is a back body portion that constitutes the main body portion of the seat back of a vehicle seat, and the seat movable portion is a back movable portion that is rotatable between an upright position and a forward-tilted position relative to the back body portion.

[0013] In the striker locking device of the fourth embodiment, when the back movable part is in the upright position, a claw bracket provided on the back movable part engages with the movable striker provided on the back body. In this embodiment, the movable striker can be restrained in the stowed position by displacing the back movable part from the upright position to the tilted forward position, and the restraint can be released by displacing the back movable part from the tilted forward position to the upright position.

[0014] A fifth embodiment of a vehicle seat comprises a seat cushion on which an occupant sits, a seat back that supports the occupant's back, and a striker lock device provided on the seat back according to any one of the first to fourth embodiments, wherein the seat back has an adjacent portion which constitutes the main body portion of the seat back, and a seat movable portion which is rotatable between a first position which is an upright position and a second position which is a forward-tilted position relative to the back body.

[0015] In the fifth embodiment of the vehicle seat, the back of the occupant seated on the seat cushion is supported by a seat back. This seat back is provided with a striker locking device. This seat back has a back body that constitutes its main body and a back movable part that is rotatable between an upright position and a forward-tilted position relative to the back body. The back body is provided with a movable striker of the striker locking device, and the back movable part is provided with a claw bracket of the striker locking device. Since this striker locking device is of any one of the first to fourth embodiments, it produces the effects described above. [Effects of the Invention]

[0016] As described above, according to the present invention, it is possible to save space in the installation space of the striker lock device.

Brief Description of the Drawings

[0017] [Figure 1] It is a perspective view showing a vehicle seat according to an embodiment, and is a view showing the upright state of the back movable part. [Figure 2] It is a side view showing a seat back of a vehicle seat according to an embodiment, and is a view showing the upright state of the back movable part. [Figure 3] It is a front view showing a part of a seat back of a vehicle seat according to an embodiment, and is a view showing the upright state of the back movable part. [Figure 4] It is a front view showing the configuration around the movable striker unit of the striker lock device according to the embodiment, and is a view showing the state corresponding to the states shown in FIGS. 1 to 3. [Figure 5] It is a cross-sectional view showing the configuration around the junction box of the striker lock device according to the embodiment, and is a view showing the state corresponding to the states shown in FIGS. 1 to 3. [Figure 6] It is a side view showing the configuration around the hinge bracket of the movable back part of a vehicle seat according to the embodiment, and is a view showing the state corresponding to the states shown in FIGS. 1 to 3. [Figure 7] It is a perspective view corresponding to FIG. 1 showing the first state when the back movable part is tilted forward. [Figure 8] It is a perspective view corresponding to FIG. 2 showing the first state when the back movable part is tilted forward. [Figure 9] It is a front view corresponding to FIG. 3 showing the first state when the back movable part is tilted forward. [Figure 10] It is a front view corresponding to FIG. 4 showing the state corresponding to FIGS. 7 to 9. [Figure 11] It is a cross-sectional view corresponding to FIG. 5 showing the state corresponding to FIGS. 7 to 9. [Figure 12] It is a side view corresponding to FIG. 6 showing the state corresponding to FIGS. 7 to 9. [Figure 13] A perspective view corresponding to FIG. 1 showing a second state when the back movable part is tilted forward. [Figure 14] A perspective view corresponding to FIG. 2 showing a second state when the back movable part is tilted forward. [Figure 15] A front view corresponding to FIG. 3 showing a second state when the back movable part is tilted forward. [Figure 16] A front view corresponding to FIG. 4 showing a state corresponding to FIGS. 13 to 15. [Figure 17] A cross-sectional view corresponding to FIG. 5 showing a state corresponding to FIGS. 13 to 15. [Figure 18] A side view corresponding to FIG. 6 showing a state corresponding to FIGS. 13 to 15. [Figure 19] A perspective view corresponding to FIG. 1 showing a third state when the back movable part is tilted forward. [Figure 20] A perspective view corresponding to FIG. 2 showing a third state when the back movable part is tilted forward. [Figure 21] A front view corresponding to FIG. 3 showing a third state when the back movable part is tilted forward. [Figure 22] A front view corresponding to FIG. 4 showing a state corresponding to FIGS. 19 to 21. [Figure 23] A cross-sectional view corresponding to FIG. 5 showing a state corresponding to FIGS. 19 to 21. [Figure 24] A side view corresponding to FIG. 6 showing a state corresponding to FIGS. 19 to 21. [Figure 25] A perspective view corresponding to FIG. 1 showing a fourth state when the back movable part is tilted forward. [Figure 26] A perspective view corresponding to FIG. 2 showing a fourth state when the back movable part is tilted forward. [Figure 27] A front view corresponding to FIG. 3 showing a fourth state when the back movable part is tilted forward. [Figure 28] A front view corresponding to FIG. 4 showing a state corresponding to FIGS. 25 to 27. [Figure 29] A cross-sectional view corresponding to FIG. 5 showing a state corresponding to FIGS. 25 to 27. [Figure 30] This is a side view corresponding to Figure 6, showing the state corresponding to Figures 25 to 27. [Figure 31] This is a perspective view corresponding to Figure 1, which shows the forward-tilted state of the rear movable part. [Figure 32] This is a perspective view corresponding to Figure 2, which shows the forward-tilted state of the rear movable part. [Figure 33] This is a front view corresponding to Figure 3, which shows the forward-tilted state of the rear movable part. [Figure 34] This is a front view corresponding to Figure 4, which shows the state corresponding to Figures 31 to 33. [Figure 35] This is a cross-sectional view corresponding to Figure 5, showing the state corresponding to Figures 31 to 33. [Figure 36] This is a side view corresponding to Figure 6, which shows the state corresponding to Figures 31 to 33. [Figure 37] This is a perspective view corresponding to Figure 1, which shows the first state when the rear movable part is raised. [Figure 38] This is a perspective view corresponding to Figure 2, which shows the first state when the rear movable part is raised. [Figure 39] This is a front view corresponding to Figure 3, which shows the first state when the rear movable part is raised. [Figure 40] This is a front view corresponding to Figure 4, showing the state corresponding to Figures 37 to 39. [Figure 41] This is a cross-sectional view corresponding to Figure 5, showing the state corresponding to Figures 37 to 39. [Figure 42] This is a side view corresponding to Figure 6, showing the state corresponding to Figures 37 to 39. [Figure 43] This is a perspective view corresponding to Figure 1, showing the second state when the rear movable part is raised. [Figure 44] This is a perspective view corresponding to Figure 2, showing the second state when the rear movable part is raised. [Figure 45] This is a front view corresponding to Figure 3, which shows the second state when the rear movable part is raised. [Figure 46] This is a front view corresponding to Figure 4, showing the state corresponding to Figures 43 to 45. [Figure 47]This is a cross-sectional view corresponding to Figure 5, showing the state corresponding to Figures 43 to 45. [Figure 48] Figure 6 is a side view showing the state corresponding to Figures 43 to 45. [Figure 49] This is a perspective view corresponding to Figure 1, showing the third state when the rear movable part is raised. [Figure 50] This is a perspective view corresponding to Figure 2, showing the third state when the rear movable part is raised. [Figure 51] This is a front view corresponding to Figure 3, which shows the third state when the rear movable part is raised. [Figure 52] This is a front view corresponding to Figure 4, showing the state corresponding to Figures 49 to 51. [Figure 53] This is a cross-sectional view corresponding to Figure 5, showing the state corresponding to Figures 49 to 51. [Figure 54] This is a side view corresponding to Figure 6, which shows the state corresponding to Figures 49 to 51. [Figure 55] This is a perspective view corresponding to Figure 1, which shows the completed upright position of the rear movable part. [Figure 56] This is a perspective view corresponding to Figure 2, which shows the completed upright position of the rear movable part. [Figure 57] This is a front view corresponding to Figure 3, which shows the completed upright position of the rear movable part. [Figure 58] This is a front view corresponding to Figure 4, showing the state corresponding to Figures 55 to 57. [Figure 59] This is a cross-sectional view corresponding to Figure 5, showing the state corresponding to Figures 59 to 57. [Figure 60] This is a side view corresponding to Figure 6, showing the state corresponding to Figures 59 to 57. [Modes for carrying out the invention]

[0018] Hereinafter, a vehicle seat 10 according to one embodiment of the present invention will be described with reference to Figures 1 to 60. In each figure, some reference numerals may be omitted for the sake of clarity. Also, the arrows FR, RH, and UP indicated as appropriate in each figure indicate the front, right, and top of the vehicle seat 10, respectively. Hereafter, when simply referring to the front, back, left, right, up, and down directions, these directions will be in relation to the vehicle seat 10.

[0019] As shown in Figure 1, the vehicle seat 10 according to this embodiment comprises a seat cushion 12 on which the occupant sits, a seat back 14 that supports the occupant's back, and two headrests 16 that support the occupant's head. This vehicle seat 10 is a two-seater seat and constitutes the right and left-right central portions of a three-seater rear seat. To the left of this vehicle seat 10, a single-seater vehicle seat (not shown) is positioned.

[0020] The seat back 14 comprises a back body portion 18 that constitutes the main body of the seat back 14, and a back movable portion 20 arranged alongside the back body portion 18 on one side in the seat width direction (in this case, the left side). The lower central part 18A of the back, which is part of the back body portion 18, protrudes to the left from the lower part of the back body portion 18 and is located below the back movable portion 20. The back body portion 18 and the back movable portion 20 each have a frame (not shown), pads (not shown) attached to each frame, and a trim cover (reference numeral omitted) covering each pad.

[0021] As shown in Figure 3, a hinge bracket 30 is positioned on the lower left of the back movable part 20. This hinge bracket 30 is fixed to the frame of the back body 18. A connecting shaft 32 (see Figure 6), which protrudes from the lower end of the back movable part 20, is pivotally supported on this hinge bracket 30. This connecting shaft 32 is oriented axially in the left-right direction, and the back movable part 20 is rotatable around this connecting shaft 32. As a result, the back movable part 20 is rotatable relative to the back body 18 (i.e., relative to the vehicle) between the upright position shown in Figure 1 and the tilted position where it is tilted forward onto the seat cushion 12 (see Figure 32). This back movable part 20 can be used as an armrest in the tilted position. The back body 18 corresponds to the "adjacent part" in this invention, and the back movable part 20 corresponds to the "seat movable part" in this invention.

[0022] The seat back 14 described above is provided with a striker lock device 40. This striker lock device 40 comprises a movable striker unit 42 provided on the back body 18, a claw bracket 62 provided on the back movable part 20, and a striker storage mechanism 64 stretched between the movable striker unit 42 and the hinge bracket 30.

[0023] As shown in Figure 4, the movable striker unit 42 includes a base bracket 44, a movable striker 46, and a locking member 56. The base bracket 44 is made of, for example, a press-formed metal plate and is fixed to the frame of the back body 18 by means of bolt fastening or the like.

[0024] The movable striker 46 is composed of a bracket connecting portion 48 made of, for example, a press-formed metal plate, and a striker body portion 50 made of, for example, a bent metal round bar. The striker body portion 50 is roughly U-shaped and is fixed to the bracket connecting portion 48 by means of welding or other means. The bracket connecting portion 48 is connected to the base bracket 44 via a support shaft 52 that passes through the base bracket 44 and the bracket connecting portion 48. The support shaft 52 is positioned with its axis in roughly the front-rear direction, and the movable striker 46 is rotatable around the support shaft 52 relative to the base bracket 44.

[0025] The movable striker 46 described above is rotatable with respect to the base bracket 44 between a protruding position (see Figure 1) in which the striker body 50 protrudes to the left from the left side of the back body 18, and a retracted position (see Figure 34) in which the striker body 50 is stored inside the back body 18. This movable striker 46 is biased to the protruding position by a tension coil spring 54 stretched between it and the base bracket 44.

[0026] The locking member 56 is formed in the shape of a long rod from, for example, a metal plate, and is positioned below the movable striker 46. One longitudinal end of the locking member 56 is attached to the base bracket 44 via a cylindrical crimping pin 58. The axial direction of the crimping pin 58 is set parallel to the axial direction of the aforementioned support shaft 52, and the locking member 56 is rotatable around the crimping pin 58 relative to the base bracket 44.

[0027] A tension coil spring 60, which acts as a biasing member, is stretched between the other longitudinal end of the locking member 56 and the bracket connecting portion 48 of the movable striker 46. The locking member 56 is biased to the locked position shown in Figure 4 by the biasing force of the tension coil spring 60. When the locking member 56 is in the locked position, the locking claw 56A formed on the locking member 56 fits into a notch (not shown) formed on the bracket connecting portion 48, thereby restraining (locking) the movable striker 46 in the protruding position.

[0028] As shown in Figure 1, the claw bracket 62 is made of, for example, a metal plate and has a roughly rectangular shape. The claw bracket 62 is positioned on the upper right side of the back movable part 20 with the left-right direction being the thickness direction and is fixed to the frame of the back movable part 20 by means of welding or other means. A notch 62A is formed at the upper end of the claw bracket 62. The striker body 50 of the movable striker 46 is fitted into this notch 62A when the back movable part 20 is in the upright position and the movable striker 46 is in the protruding position. This configuration restrains (locks) the back movable part 20 in the upright position.

[0029] The striker storage mechanism 64 includes a junction box (cable bracket) 66 (see Figure 5), a first lever 84 and a second lever 86 (see Figure 6), and a first cable 90, a second cable 92, a third cable 94, a fourth cable 96, and a fifth cable 98 (see Figures 3 to 6). The junction box 66 includes a case 68 and a first slider 70 and a second slider 76 housed within the case 68. The case 68 is manufactured, for example, by resin injection molding and is formed in a long, box-like shape.

[0030] The first slider 70 is manufactured, for example, by resin injection molding and has a roughly rectangular plate shape. This first slider 70 is formed as a long plate with the plate thickness direction being the height direction of the case 68 (the direction perpendicular to the plane of the paper in Figure 5) and the length being the longitudinal direction of the case 68, and is slidable in the longitudinal direction relative to the case 68.

[0031] The second slider 76 is manufactured, for example, by resin injection molding and has a long, plate-like shape with its length aligned with the longitudinal direction of the case 68. This second slider 76 is positioned overlapping the first slider 70 on one side in the plate thickness direction. The second slider 76 has a smaller width dimension (vertical dimension in Figure 5) than the first slider 70 and is positioned offset to one side (downward in Figure 5) of the first slider 70 in the width direction. The first slider 70 and the second slider 76 are connected via a cylindrical pin 82 whose axis is aligned with the height direction of the case 68, allowing them to move relative to each other within a certain range along the longitudinal direction of the case 68.

[0032] On the other side of the first slider 70 in the width direction, an elongated hole 72 and a circular hole 74 are formed, with the longitudinal direction of the first slider 70 as its length. The elongated hole 74 is formed on one side of the first slider 70 in the longitudinal direction (left side in Figure 5), and the circular hole 74 is formed on the other side of the first slider 70 in the longitudinal direction (right side in Figure 5). The second slider 76 has a circular hole 78 and an elongated hole 80 with the longitudinal direction of the second slider 76 as its length. The circular hole 78 is formed on one side of the second slider 76 in the longitudinal direction (left side in Figure 5), and the elongated hole 80 is formed on the other side of the second slider 76 in the longitudinal direction (right side in Figure 5).

[0033] As shown in Figure 6, the first lever 84 and the second lever 86 are manufactured, for example, by resin injection molding. They are positioned adjacent to the left side of the hinge bracket 30. The first lever 84 is rotatably supported on the connecting shaft 32 and has a forearm portion 84A extending diagonally upward and forward from the connecting shaft 32 and a rear arm portion 84B extending backward from the connecting shaft 32. This first lever 84 is rotatable around the connecting shaft 32.

[0034] The second lever 86 is rotatably supported on the connecting shaft 32 and has an upper arm portion 86A extending diagonally rearward above the connecting shaft 32 and a rear arm portion 86B extending rearward from the connecting shaft 32. This second lever 86 is positioned between the first lever 84 and the hinge bracket 30 and is rotatable around the connecting shaft 32. A tension coil spring 88 is stretched between the rear end of the rear arm portion 84B of the second lever 86 and the hinge bracket 30. This biases the second lever 86 to the forward rotation position (see Figure 24).

[0035] The hinge bracket 30 has an arc-shaped opening 30A formed in a position opposite the forearm portion 84A of the first lever 84 and the upper arm portion 86A of the second lever 86. A pivot pin 20A provided on the back movable part 20 is inserted into this opening 30A. The pivot pin 20A has its axis in the left-right direction and protrudes to the left from the back movable part 20. This pivot pin 20A is positioned between the forearm portion 84A of the first lever 84 and the upper arm portion 86A of the second lever 86.

[0036] As shown in Figures 4 to 6, the first cable 90, the second cable 92, the third cable 94, the fourth cable 96, and the fifth cable 98 each have outer casings 90A, 92A, 94A, 96A, and 98A, and inner wires 90B, 92B, 94B, 96B, and 98B inserted through the outer casings 90A, 92A, 94A, 96A, and 98A, respectively.

[0037] One end of the outer casing 90A of the first cable 90 is locked to the base bracket 44 of the movable striker unit 42, and one end of the inner wire 90B of the first cable 90 is slidably connected to an arc-shaped elongated hole 47 formed in the movable striker 46. The other end of the outer casing 90A of the first cable 90 is locked to one longitudinal end of the case 68 of the junction box 66, and one end of the inner wire 90B of the first cable 90 is slidably connected to an elongated hole 72 of the first slider 70.

[0038] One end of the outer casing 92A of the second cable 92 is locked to the base bracket 44 of the movable striker unit 42, and one end of the inner wire 92B of the second cable 92 is connected to the locking member 56. The other end of the outer casing 92A of the second cable 92 is locked to one longitudinal end of the case 68 of the junction box 66, and the other end of the inner wire 92B of the second cable 92 is connected to the circular hole 78 of the second slider 76.

[0039] One end of the outer casing 94A of the third cable 94 is locked to the base bracket 44 of the movable striker unit 42, and one end of the inner wire 94B of the third cable 94 is connected to the movable striker 46. The other end of the outer casing 94A of the third cable 94 is locked to the hinge bracket 30, and the other end of the inner wire 94B of the third cable 94 is slidably connected to the rear arm portion 84B of the first lever 84.

[0040] One end of the outer casing 96A of the fourth cable 96 is secured to the other longitudinal end of the case 68 of the junction box 66, and one end of the inner wire 96B of the fourth cable 96 is connected to the circular hole 74 of the first slider 70. The other end of the outer casing 96A of the fourth cable 96 is secured to the frame of the back movable part 20 near a strap 100 (see Figures 1 to 3) provided in the middle of the right side of the back movable part 20 in the vertical direction, and the other end of the inner wire 96B of the fourth cable 96 is connected to the strap 100. This strap 100 corresponds to the "operating part" in the present invention.

[0041] One end of the outer casing 98A of the fifth cable 98 is locked to the other longitudinal end of the case 68 of the junction box 66, and one end of the inner wire 98B of the fifth cable 98 is connected to the elongated hole 80 of the second slider 76. The other end of the outer casing 98A of the fifth cable 98 is locked to the hinge bracket 30, and the other end of the inner wire 98B of the fifth cable 98 is non-slidable to the rear arm portion 86B of the second lever 86.

[0042] In the vehicle seat 10 with the above configuration, as shown in Figures 1 to 6, when the back movable part 20 is in the upright position, the rotation pin 20A contacts the upper arm portion 86A of the second lever 86 from the front, thereby holding the second lever 86 in the rear rotation position (the position shown in Figure 6). When the back movable part 20 is tilted forward, the strap 100 is pulled forward.

[0043] As shown in Figures 7 to 12, when the strap 100 is pulled forward (see arrow A1 in Figure 8), the inner wire 96B of the fourth cable 96, whose other end is connected to the strap 100, is pulled (see arrow A2 in Figure 11). As a result, the first slider 70, to which the other end of the inner wire 96B is connected, slides together with the second slider 76 toward the other end of the case 68 in the longitudinal direction, and the inner wire 92B of the second cable 92, whose other end is connected to the second slider 76, is pulled (see arrow A3 in Figure 10 and arrow A4 in Figure 11). Consequently, the locking member 56, to which one end of the inner wire 92B is connected, rotates away from the movable striker 46 (see arrow A5 in Figure 10), and the locking member 56 releases the movable striker 46. In this configuration, one end of the inner wire 90B of the first cable 90 slides within the elongated hole 72 of the first slider 70, and one end of the inner wire 98B of the fifth cable 98 slides within the elongated hole 80 of the second slider 76, thereby preventing the inner wires 90B and 98B from being pulled.

[0044] As shown in Figures 13 to 18, when the strap 100 is pulled further forward (see arrow A6 in Figure 14), the inner wire 96B of the fourth cable 96, whose other end is connected to the strap 100, is pulled further (see arrow A7 in Figure 17). As a result, the first slider 70, to which the other end of the inner wire 96B is connected, slides further toward the other longitudinal end of the case 68 together with the second slider 76, and the inner wire 92B of the second cable 92, whose other end is connected to the second slider 76, is pulled further (see arrow A8 in Figure 17 and arrow A9 in Figure 16), as well as the inner wire 90B of the first cable 90, whose other end is connected to the first slider 70 (see arrow A10 in Figure 17 and arrow A11 in Figure 16). As a result, the locking member 56 to which one end of the inner wire 92B is connected rotates further away from the movable striker 46, and the movable striker 46 to which one end of the inner wire 98B is connected rotates slightly toward the stowed position (see arrow A12 in Figure 16). This releases the engagement of the movable striker 46 with the claw bracket 62, allowing the back movable part 20 to be tilted forward. At the same time, the inner wire 94B of the third cable 94, to which one end is connected, is pushed by the movable striker 46 (see arrow A13 in Figure 16), causing the other end of the inner wire 94B to slide against the rear arm portion 84B of the first lever 84 (see arrow 14 in Figure 18).

[0045] As shown in Figures 19 to 24, when the back movable part 20 is tilted forward, the strap 100 remains pulled forward (see arrow A15 in Figure 20), and the back movable part 20 is rotated slightly forward from the upright position (see arrow A16 in Figure 20). As a result, as shown in Figure 24, the pivot pin 20A of the back movable part 20 rotates forward, and the second lever 86 rotates counterclockwise when viewed from the left side due to the biasing force of the tension coil spring 88 (see arrow A17 in Figure 24). Consequently, the inner wire 98B of the fifth cable 98, whose other end is connected to the rear arm portion 86B of the second lever 86, is pulled (see arrow A18 in Figure 24), and one end of the inner wire 98B slides within the elongated hole 80 of the second slider 76 (see arrow A19 in Figure 23). As a result, the second slider 76 and the first slider 70 are held by the inner wire 98B to the other longitudinal end of the case 68, and the inner wire 92B of the second cable 92 is held in a pulled position. At this time, the back movable part 20 rotates slightly forward from the upright position, causing the claw bracket 62 to be displaced forward relative to the movable striker unit 42 (see Figure 19).

[0046] As shown in Figures 25 to 30, when the strap 100 is released with the back movable part 20 rotated slightly forward from the upright position, the inner wire 96B of the fourth cable 96, one end of which is connected to the strap 100, returns to its original position (see arrow A20 in Figure 29). As a result, the first slider 70 slides toward one end of the case 68 in the longitudinal direction, and the first cable 90, the other end of which is connected to the first slider 70, returns to its original position (see arrow A21 in Figure 29 and arrow A22 in Figure 28). Consequently, the movable striker 46 rotates to the protruding position due to the biasing force of the tension coil spring 54 (see arrow A23 in Figure 28), and the third cable 94, one end of which is connected to the movable striker 46, returns to its original position (see arrow A24 in Figure 28 and arrow 25 in Figure 30). In this case, as shown in Figure 29, the inner wire 92B of the second cable 92 remains pulled by the inner wire 98B of the fifth cable 98 via the second slider 76, and therefore does not return to its original position.

[0047] As shown in Figures 31 to 36, when the back movable part 20 is tilted forward to the forward position (see arrow A26 in Figure 32), the pivot pin 20A of the back movable part 20 strikes the forearm portion 84A of the first lever 84 and pushes down the forearm portion 84A, causing the first lever 84 to rotate counterclockwise when viewed from the left side (see arrow A27 in Figure 36). This pulls the inner wire 94B of the third cable 94, the other end of which is connected to the rear arm portion 84B of the first lever 84 (see arrow A28 in Figure 36 and arrow A29 in Figure 34), and the movable striker 46, to which one end of the inner wire 94B is connected, rotates to the stowed position (see arrow A30 in Figure 34). As a result, when the back movable part 20 is tilted forward, the movable striker 46 is held in the stowed position by the inner wire 94B.

[0048] As shown in Figures 37 to 42, when the back movable part 20 is pulled up from the forward-tilted position to the upright position (see arrow A31 in Figure 38), the pivot pin 20A of the back movable part 20 rotates to the rear (see Figure 42). This releases the inner wire 94B from holding the movable striker 46 in the stowed position, and the movable striker 46 rotates to the protruding position due to the biasing force of the tension coil spring 60 (see arrow A32 in Figure 40). At this time, the inner wire 94B of the third cable 94 is pulled by the movable striker 46 and returns to its original position (see arrow A33 in Figure 40 and arrow A34 in Figure 42), and the first lever 84 is pulled by the inner wire 94B and rotates to its original position (see arrow A35 in Figure 42).

[0049] As shown in Figures 43 to 48, when the back movable part 20 rotates to near the upright position (see arrow A36 in Figure 44), the movable striker 46 comes into contact with the claw bracket 62 (see Figures 43 and 44), causing the rotation of the back movable part 20 to temporarily stop.

[0050] As shown in Figures 49 to 54, when the back movable part 20 is pushed towards the upright position from the stopped state described above (see arrow A37 in Figure 50), the movable striker 46 slides against the claw bracket 62 and rotates slightly towards the stowed position (see arrow A38 in Figure 52). As a result, the inner wire 94B of the third cable 94, one end of which is connected to the movable striker 46, is pushed by the movable striker 46 (see arrow A39 in Figure 52), causing the other end of the inner wire 94B to slide against the rear arm portion 84B of the first lever 84 (see arrow A40 in Figure 54).

[0051] As shown in Figures 55 to 60, when the back movable part 20 is pushed in to the upright position (see arrow A41 in Figure 56), the movable striker 46 fits into the notch 62A of the claw bracket 62 (see Figure 55), and the movable striker 46 rotates to the protruding position (see arrow A42 in Figure 58). As a result, the locking claw 56A of the locking member 56 fits into the notch (notation omitted) of the movable striker 46 (see arrow A43 in Figure 58), and the movable striker 46 is restrained in the protruding position, while the back movable part 20 is restrained in the upright position. At this time, the inner wire 92B of the second cable 92, one end of which is connected to the locking member 56, is pulled (see arrow A44 in Figure 58 and arrow A45 in Figure 59), and the inner wire 98B of the fifth cable 98, which is connected to the inner wire 92B via the second slider 76, is pulled (see arrow A46 in Figure 59 and arrow A47 in Figure 60). At the same time, the inner wire 94B of the third cable 94, one end of which is connected to the movable striker 46, is pulled (see arrow A48 in Figure 58), and the pivot pin 20A of the back movable part 20 hits the upper arm portion 86A of the second lever 86, causing the second lever 86 to rotate clockwise when viewed from the left (see arrow A49 in Figure 60).

[0052] In the vehicle seat 10 with the above configuration, the back of the occupant seated on the seat cushion 12 is supported by the seat back 14. The seat back 14 is provided with a striker lock device 40. The seat back 14 has a back body portion 18 that constitutes its main body, and a back movable portion 20 that is rotatable between an upright position and a forward-tilted position relative to the back body portion 18. The back body portion 18 is provided with a movable striker unit 42 of the striker lock device 40, and the back movable portion 20 is provided with a claw bracket 62 of the striker lock device 40.

[0053] The movable striker 46 of the movable striker unit 42 is rotatable relative to the back body 18 between a protruding position where it extends from the back body 18 and a retracted position where it is stored in the back body 18. When the movable back part 20 rotates to the upright position while the movable striker 46 is in the protruding position, the movable striker 46 engages with the claw bracket 62. This restrains the movable back part 20 in the upright position. This engagement is released when the occupant pulls the strap 100. This allows the movable back part 20 to rotate from the upright position to the forward-tilted position.

[0054] When the back movable part 20 rotates from the upright position to the forward-tilted position, the movable striker 46 is restrained in the stored position by the striker storage mechanism 64. This restraint is released when the back movable part 20 rotates from the forward-tilted position to the upright position. In this striker locking device 40, since the movable striker 46 rotates and engages with the claw bracket 62, an existing locking device is unnecessary, and space for installation can be saved. In particular, since the claw bracket 62 can be installed on the back movable part 20, which has a small width in the left-right direction, it is easy to secure installation space.

[0055] Furthermore, in this striker locking device 40, when the strap 100 is pulled, the movable striker 46 is released from its position in the protruding position by the locking member 56. As a result, the movable striker 46 rotates to the retracted position due to the biasing force of the tension coil spring 60 stretched between the locking member 56 and the movable striker 46. In this striker locking device 40, the movable striker 46 is restrained in the protruding position by the locking member 56 when the strap 100 is not being operated, thus preventing the movable striker 46 from being unintentionally retracted.

[0056] Furthermore, according to this striker locking device 40, one end of the inner wire 90B of the first cable 90 is connected to the movable striker 46, and the other end of the inner wire 90B is connected to the first slider 70 of the junction box 66. One end of the inner wire 92B of the second cable 92 is connected to the locking member 56, and the other end of the inner wire 92B is connected to the second slider 76 of the junction box 66. One end of the inner wire 94B of the third cable 94 is connected to the movable striker 46, and the other end of the inner wire 94B is connected to the first lever 84. One end of the inner wire 96B of the fourth cable 96 is connected to the strap 100, and the other end of the inner wire 96B is connected to the first slider 70 of the junction box 66. One end of the inner wire 98B of the fifth cable 98 is connected to the second lever 86, and the other end of the inner wire 98B is connected to the second slider 76 of the junction box 66. This constitutes the striker storage mechanism 64, which allows for a simpler configuration of the striker storage mechanism 64.

[0057] In the above embodiment, the movable back portion 20 is arranged in line with the seat width direction relative to the back body portion 18, but this is not the only configuration. For example, the movable back portion may be fitted into a recess formed on the front surface of the back body portion.

[0058] Furthermore, although the above embodiment described a case in which the vehicle seat 10 constitutes the right portion and the left-right central portion of a three-seater rear seat, it is not limited to this. When the vehicle seat 10 according to the present invention constitutes the left portion and the left-right central portion of a three-seater rear seat, the configuration is symmetrical to that of the above embodiment.

[0059] Furthermore, although the above embodiment describes a case where the back body portion 18 corresponds to the "adjacent portion" in the present invention and the back movable portion 20 corresponds to the "seat movable portion" in the present invention, the invention is not limited to this. For example, the seat back of a vehicle seat that can tilt forward and backward relative to the vehicle may correspond to the "seat movable portion" in the present invention, and the side portion of the vehicle body located to the side of the seat back may correspond to the "adjacent portion" in the present invention.

[0060] Furthermore, although the above embodiment described the case in which the present invention is applied to a vehicle seat 10, the present invention is not limited to this and can also be applied to seats for vehicles other than vehicles (for example, aircraft and ships).

[0061] Furthermore, the present invention can be implemented with various modifications without departing from its spirit. Of course, the scope of the present invention is not limited to the embodiments described above. [Explanation of symbols]

[0062] 10 Vehicle seats 12 seat cushions 14 Seatback 18. Main body of the bag (adjacent part) 20. Back movable part (seat movable part) 40. Striker Lock Device 46 Movable Striker 60. Tension coil spring (biasing member) 62 Claw bracket 64. Strike storage mechanism 66 Junction Box 68 cases 70 First Slider 76. Second slider 84. First lever 86. Second lever 90 Cable No. 1 92 Second Cable 94 Third Cable 96. Cable No. 4 98 Cable No. 5 100 straps

Claims

1. A claw bracket provided on the movable part of a vehicle seat that is displaceable between a first position and a second position relative to the vehicle, A movable striker is provided in an adjacent portion that is positioned adjacent to the movable seat portion when the movable seat portion is in the first position, and is displaceable relative to the adjacent portion between a protruding position where it protrudes from the adjacent portion and a stored position where it is stored in the adjacent portion, and engages with the claw bracket when the movable seat portion is displaced to the first position while in the protruding position, A striker storage mechanism having an operating part that can be operated by the occupant, wherein the engagement is released when the operating part is operated, the movable striker is restrained in the storage position when the movable part of the seat is displaced from the first position to the second position, and the restraint is released when the movable part of the seat is displaced from the second position to the first position, A striker lock device equipped with a striker lock.

2. A locking member that restrains the movable striker in the protruding position and releases the restraint when the operating part is operated, A biasing member is stretched between the locking member and the movable striker, and biases the movable striker towards the storage position, A striker lock device according to claim 1, comprising:

3. The striker storage mechanism is A first lever that displaces when the movable seat portion reaches the second position and when the movable seat portion displaces from the second position, A second lever that displaces when the movable seat portion is displaced from the first position and when the movable seat portion reaches the first position, A first cable, one end of which is connected to the movable striker, A second cable, one end of which is connected to the locking member, A third cable, with one end connected to the movable striker and the other end connected to the first lever, A fourth cable, one end of which is connected to the operating unit, A fifth cable, one end of which is connected to the second lever, A junction box comprising a case and a first slider and a second slider slidable relative to the case, wherein the other ends of the first cable and the fourth cable are connected to the first slider, and the other ends of the second cable and the fifth cable are connected to the second slider, A striker lock device according to claim 2, having the following features.

4. The adjacent portion is the back body portion that constitutes the main body portion of the seat back of the vehicle seat, The striker lock device according to claim 1 or 2, wherein the seat movable part is a back movable part that is rotatable between an upright position and a forward-tilted position relative to the back body.

5. The seat cushion on which the occupants sit, A seatback that supports the back of the aforementioned occupant, A striker lock device according to claim 1 or claim 2 is provided on the seat back, The seat back is equipped with, The adjacent portion, which constitutes the main body of the seat back, The seat movable part is a back movable part that is rotatable between a first position, which is an upright position, and a second position, which is a forward-tilted position, relative to the back body, A vehicle seat having the following features.

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