Locking structure of pop-up seat for vehicle

Abstract

Provided is a lock structure for a pop-up seat for a vehicle, the lock structure being less likely to cause a failure due to a lower rail. With respect to the locking structure (RK), the seat (ST) is rotatably supported on the upper rail (STb), can be locked on the upper rail (5) through a locking part (7), and can be released at a specified sliding position. The locking part (7) is provided with a hook clamping component (1) of the upper rail (5); a hook plate (73) that engages and locks the hook engagement member (1) by rotation of the seat (ST) in the first direction; a link plate (62) that rotates the hook plate (73) in a second direction opposite to the first direction; a pressing piece section (511) which is lowered in conjunction with the rotation of the pressing piece section (511); and a relay unit (9) having an unlocking detector (93) which is pressed by the pressing piece (511) and is lowered. The lower rail (82) has a hole (82a1) into which the lock release detector (93) can enter when the seat (ST) is at a predetermined sliding position, and the lock is released by the rotation of the hook plate (73) and the rotation of the link plate (62) after the lock release detector (93) enters the hole (82a1).

Description

Technical Field

[0001] The invention relates to a locking structure of a pop-up seat for a vehicle. Background Art

[0002] Patent Document 1 describes a pop-up seat structured to slide relative to the floor of a vehicle, pop up laterally, and be stored in the side walls of the vehicle. A lower rail is laid on the vehicle floor, and a plate-shaped hook is mounted on an upper rail that engages with the lower rail and slides, allowing it to rotate about an axis extending in the width direction. A U-shaped striker protrudes from the bottom of the seat. The hook rotates and engages the striker, locking the seat so that it cannot pop up. Furthermore, a hole is formed in the bottom wall of the lower rail at a predetermined position within the sliding range that allows the seat to pop up. When the hook rotates, a portion of the hook enters this hole, allowing the seat to be released.

[0003] Patent Literature

[0004] Patent Document 1: Japanese Patent No. 3287453 Summary of the Invention

[0005] Technical problem to be solved by the invention

[0006] In the technology described in Patent Document 1, the plate-shaped hook is formed as a thick plate to withstand impact. Furthermore, the hole provided at the bottom of the lower rail is formed long and wide in the longitudinal direction to allow the hook to enter. This can lead to the disadvantage that it is difficult to equalize the bending strength of the portion of the lower rail where the hole is provided with that of the rest of the lower rail. Furthermore, a small object that falls into the lower rail can fall further through the larger hole and into the floor, becoming effectively unrecoverable. Therefore, a locking structure for a pop-up vehicle seat is desired that is less susceptible to these lower rail-related problems.

[0007] Therefore, the technical problem to be solved by the present invention is to provide a locking structure for a pop-up seat for a vehicle in which troubles caused by the lower rail are unlikely to occur.

[0008] In order to solve the above technical problems, one embodiment of the present invention has the following structure.

[0009] 1) A locking structure for a pop-up seat for a vehicle, wherein the pop-up seat is rotatably supported on one side of an outer upper rail that slides in engagement with an outer lower rail, and can be locked and detached relative to an inner upper rail that slides in engagement with an inner lower rail by a locking portion provided on the inner side, and can be unlocked at a predetermined sliding position.

[0010] The locking portion has:

[0011] a hook engaging component, the hook engaging component being mounted on the inner upper rail;

[0012] a hook plate rotatably provided on one side of the pop-up seat for a vehicle, and being engaged with the hook engaging member by rotating in a first rotation direction to enter a locked state;

[0013] a link plate that rotates to rotate the hook plate in a second rotation direction opposite to the first rotation direction;

[0014] A pressing piece that descends in conjunction with the rotation of the link plate; and

[0015] a relay unit provided on the inner upper rail and having a lock release detector which is pressed down by the lowered pressing piece;

[0016] The inner lower rail has a hole into which the lowered lock release detector can enter only when the vehicle pop-up seat is located at the predetermined sliding position.

[0017] When the link plate rotates after the lock release detector enters the hole, the hook plate rotates in the second rotation direction, and the lock is released.

[0018] 2) In the locking structure of the pop-up seat for a vehicle described in 1),

[0019] The base plate is provided with a base plate that rotates in a third rotation direction in conjunction with the rotation of the link plate, wherein the pressing piece is formed to protrude downward at a portion of the base plate where the third rotation direction becomes a downward direction.

[0020] The lock release detector is a pin extending in the vertical direction. When the upper end portion is pressed downward by the pressing piece, the lower end portion protrudes downward from the inner upper rail and reaches the bottom wall portion of the inner lower rail.

[0021] 3) In the locking structure for the pop-up seat for a vehicle described in 2), the hole is formed in the bottom wall portion.

[0022] 4) In the locking structure of the pop-up seat for a vehicle described in 2) or 3),

[0023] The base plate has a contact rotation piece that is restricted from rotating in only one direction.

[0024] When the link plate rotates so as to rotate the hook plate in the second rotation direction, the link plate abuts against the abutting rotation piece from the first side rotating in the one direction.

[0025] The contact rotation piece converts the force received by the link plate when contacting from the first side into a rotational force of the base plate in the third rotational direction. The link plate rotates when contacting from a second side opposite to the first side, thereby preventing the base plate from rotating.

[0026] Effects of the Invention

[0027] According to one embodiment of the present invention, it is possible to obtain an effect that a malfunction caused by the lower rail is less likely to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view explaining the pop-up operation of the seat ST locked by the locking structure RK of the pop-up seat for a vehicle as one embodiment of the present invention.

[0029] Figure 2 It is a left side view showing the locked state of the locking structure RK.

[0030] Figure 3 It is a left side view showing the lock releasing operation in the lock mechanism RK.

[0031] Figure 4 FIG. 1 is a diagram showing the relay unit 9 in the locking structure RK. Figure 2 Cross-sectional view at the S4-S4 position.

[0032] Figure 5 In the case of the unlocking operation of the intervention relay unit 9, Figure 4 Cross-sectional view of the same location. DETAILED DESCRIPTION

[0033] An embodiment of the locking structure of the vehicle pop-up seat of the present invention is described by using the seat ST and the locking structure RK. Figure 1 The left and right directions correspond to the left and right directions of the passengers facing the forward direction of the vehicle, and the front is Figure 1 The front and back of the paper are Figure 1 In addition, the left-right direction is the width direction of the vehicle and the seat ST.

[0034] The seat ST includes a seat cushion ST1 and a seat back ST2. The seat cushion ST1 includes a seat cushion frame ST1f inside, and the seat back ST2 includes a seat back frame ST2f inside. The seat back frame ST2f is tiltably rotatable relative to the seat cushion frame ST1f about an axis (not shown) extending in the left and right directions.

[0035] The seat ST is provided in the vehicle interior in a manner that allows it to slide in the front-rear direction and is stored in the right wall of the vehicle interior by a lateral pop-up method. Figure 1 As shown, an inner lower rail 82 (hereinafter simply referred to as the lower rail 82) is provided on the floor FL of the vehicle compartment in a state of being substantially embedded in the floor FL in a posture extending in the front-rear direction. The right side of the floor FL is raised one step as a wheel house Fla, and an outer lower rail 81 is provided on the upper portion of the floor FL in a posture extending in the front-rear direction.

[0036] An upper rail STb, serving as an outer upper rail, is engaged with the outer lower rail 81 so as to be movable in the fore-aft direction. A hinge STa is attached to the upper end of the upper rail STb, which rotates about a rotation axis extending in the fore-aft direction. Furthermore, a seat cushion frame ST1f, housed within the seat cushion ST1, is connected to the hinge STa. Thus, the seat cushion frame ST1f is rotatable relative to the upper rail STb via the hinge STa. Specifically, the seat cushion ST1, with the hinge STa as its rotation center, rotates between a storage position (shown in solid lines) in an upright position housed within the right wall (not shown) and a use position (shown in dashed lines) in a substantially horizontal position (see arrow DR1).

[0037] The column panel STc is mounted on the left end portion of the inner side of the lower side of the seat cushion frame ST1f. The column panel STc is Figure 1 The plate-like member extending in a direction perpendicular to the paper surface is locked and rotated in a posture extending in the vertical direction when the seat cushion ST1 is in use. A locking portion 7 included in the locking structure RK is provided at the top end of the pillar panel STc. The locking portion 7 is freely attachable to and detachable from the hook engaging member 1 of the upper rail 5, which is an inner upper rail that is movably engaged with the lower rail 82 in the forward and backward directions (see Figure 2 The locking portion 7 can be locked in a state mounted on the hook engaging member 1. The locking portion 7 and the hook engaging member 1 constitute a locking structure RK. The upper rail 5 is embedded in the lower rail 82 and engaged therewith.

[0038] (Locking structure RK)

[0039] Next, see Figures 2 to 5 The structure and operation of the locking structure RK are described in detail. Figure 2 It is a left side view showing the locked state of the locking structure RK. Figure 3 It is a left side view showing the lock releasing operation in the lock mechanism RK. Figure 4 FIG. 9 is a diagram showing the relay unit 9 of the locking structure RK. Figure 2 Cross-sectional view at the S4-S4 position. Figure 5 The unlocking operation via the relay unit 9 is shown. Figure 4 Cross-sectional view at the same location.

[0040] First, the lower rail 82, the main rail 5a of the upper rail 5 engaged with the lower rail 82, and the hook engaging member 1 attached to the main rail 5a will be described in detail. Figure 4 The cross-sectional shape shown has a bottom wall portion 82a, a side wall portion 82b, and a top wall portion 82c, and is generally U-shaped with an open top. The bottom wall portion 82a is fixed to the underfloor panel FLp disposed under the floor of the vehicle compartment. The side wall portions 82b are formed into a pair of upright upwardly extending portions from the left and right edges of the bottom wall portion 82a. The top wall portion 82c extends from the top ends of the pair of side wall portions 82b in the left-right direction, approaching each other and forming an eaves shape. The top ends of the pair of top wall portions 82c are separated from each other in the left-right direction, forming a gap 82d. A movable rail portion 82b1 protruding inwardly is formed on the lower portion of the inner surface of each side wall portion 82b. The upper surface of the movable rail portion 82b1 is formed into an inclined surface that descends as it moves inward.

[0041] The upper rail 5 is substantially buried in the space V8 inside the lower rail 82 and is accommodated so as to be movable in the front-rear direction. Figure 2 As shown, the upper rail 5 has a pair of hook engaging parts 1 installed at the front end and rear end of the main rail 5a. Rollers 2 are installed at the front and rear ends of the main rail 5a. Figure 4 As shown, the roller 2 includes a shaft portion 2b extending in the horizontal direction and disc-shaped grounding portions 2a formed at the left and right ends of the shaft portion 2b and having a larger diameter than the shaft portion 2b. The pair of grounding portions 2a roll on a pair of movable rail portions 82b1, thereby allowing the upper rail 5 to move smoothly and automatically in the horizontal direction within the space V8 inside the lower rail 82.

[0042] like Figure 2 As shown, hook engaging members 1 are mounted at the front and rear ends of the main rail 5a so as not to interfere with the rollers 2, thereby forming the upper rail 5. Since the two hook engaging members 1 have the same shape and are mounted in opposite directions, the following description will focus on the hook engaging member 1 mounted at the rear end as a representative example.

[0043] The hook engaging member 1 is formed of resin, for example, and is attached to the upper rail 5 by a known attachment structure such as a snap structure (not shown). The hook engaging member 1 is formed of metal or the like and may be attached to the upper rail 5 by screw fastening or the like.

[0044] The hook engaging member 1 is disposed in a space V8 within the lower rail 82. It comprises a base 11 shaped to avoid interference with the roller 2, and a protrusion 12 that projects forward from the top of the base 11 in an eave-like manner. The protrusion 12 extends longitudinally from the top of the main rail 5a. A space V1 is formed below the protrusion 12, which serves as a ceiling.

[0045] Although the hook engagement member 1 is substantially buried in the lower rail 82 and housed, the upper surface of the rear portion of the base 11 protrudes slightly upward from the upper surface of the lower rail 82 .

[0046] The locking structure RK includes a hook engaging member 1 and is disposed at the front and rear of the upper rail 5, each having a locking portion 7. Since the locking structure RK is symmetrical in front and back, the locking structure RK disposed at the rear is representative. Figure 2 A pair of locking structures RK at the front and rear portions are linked to each other in state transition between a locked state and an unlocked state via a link unit 6 disposed at the center in the front-rear direction.

[0047] exist Figure 2 In the rear locking structure RK, the first shaft 74, second shaft 75, third shaft 61, and fourth shaft 53 are fixed to the pillar panel STc. The first shaft 74 is located slightly downward from the vertical center of the pillar panel STc, and the second shaft 75 is located rearward and downwardly spaced from the first shaft 74. The third shaft 61 is located above the first shaft 74 at the center of the front and rear locking structures R in the front-to-back direction. The fourth shaft 53 is located near the lower edge of the pillar panel STc.

[0048] The link unit 6 includes a link plate 62 and a connecting rod 64 .

[0049] The link plate 62 is a slender metal plate-shaped member. It is supported at its longitudinal center by a third shaft portion 61 having an axis extending in the left-right direction, allowing for free rotation about the axis. The link plate 62 has rod connection portions 631 and 632 equidistant from the third shaft portion 61 in the longitudinal direction. One end of a slender connecting rod 64f, 64f, is rotatably connected to each of the rod connection portions 631 and 632.

[0050] In the link plate 62 becomes Figure 2 A locking portion 621 is formed at the first end of the upper end of the lock, extending forward. A locking hole 621a is formed in the locking portion 621, and one end of the release wire 65 is locked in the locking hole 621a. The release wire 65 extends rearward and upward, and the other end is connected to a lock release lever (not shown).

[0051] The link plate 62 is surrounded by a biasing member (not shown). Figure 2 As will be described later, when the occupant or the like releases the lock of the lock structure RK, the lock release lever is operated against the torque indicated by the arrow FR2, so that the release wire 65 is pulled rearward and upward.

[0052] The locking portion 7 comprises a relay plate 72, a vibration-proof plate 76, and a hook plate 73. The relay plate 72 is formed in a plate-like shape, comprising a base 721, a connecting arm 722 extending upward from the base 721, a connecting portion 723 formed at the top end of the connecting arm 722, and a protrusion 724 that tapers upward and rearward. A restricting portion 721a extending downward from the protrusion 724 is formed in a generally arc-shaped shape centered on the axis of the first shaft portion 74. The base 721 is supported on the first shaft portion 74 so as to be rotatable about an axis extending in the left-right direction and is shaped to protrude rearward.

[0053] The rear end portion of the connecting rod 64 is rotatably connected to the connecting portion 723 . Therefore, when the link plate 62 rotates around the third shaft portion 61 , the relay plate 72 rotates around the first shaft portion 74 via the connecting rod 64 .

[0054] The anti-vibration plate 76 is on the left side of the relay plate 72 ( Figure 2 The vibration-isolating plate 76 extends rearward from the first shaft portion 74 with a substantially uniform width, and the top end is formed into a pin contact portion 76a formed in a substantially arc shape with the axis of the first shaft portion 74 as the center.

[0055] The hook plate 73 has a plate-shaped base portion 731. The base portion 731 is supported by the second shaft portion 75 so as to be rotatable around an axis extending in the left-right direction. Figure 2 The base 731 has a first extension 731a extending upward from the second shaft 75 and a second extension 731b extending rearward and downward. The hook plate 73 is surrounded by a force applying member (not shown). Figure 2 Apply force counterclockwise (see arrow FR1).

[0056] The top end side of the second extension portion 731b of the hook plate 73 is bent into a sickle shape and directed toward Figure 2 The hook portion 732 extends in a tapered manner at the front lower end. Figure 2 In the locked state shown, the hook portion 732 rotates clockwise (first rotation direction) and enters the gap 82d between the pair of top wall portions 82c of the lower rail 82 from above (see also FIG. Figure 3 ), entering the space V1 inside the protruding portion 12 of the hook engaging component 1. Figure 2 In the embodiment, the counterclockwise rotation direction opposite to the first rotation direction is the second rotation direction, and the hook plate 73 is unlocked by rotating in the second rotation direction.

[0057] exist Figure 2In the locked state shown, the front corner 734 of the first extension 731a of the hook plate 73 abuts the limiting portion 721a of the relay plate 72, restricting further counterclockwise rotation. Thus, the lock is maintained. In addition, a protruding pin 733 protruding to the left (toward the front of the paper) is provided on the first extension 731a. In the locked state, the protruding pin 733 abuts the pin abutting portion 76a of the shockproof plate 76. The abutment between the shockproof plate 76 and the protruding pin 733 prevents the hook plate 73 from shaking, and the rotation of the hook plate 73 in the unlocking direction is restricted by the relay plate 72.

[0058] If Figure 2 In the locked state shown, if the seat ST is flipped up, that is, the pillar panel STc is moved upward, the counterclockwise rotation of the hook plate 73 is restricted by the relay plate 72, so the hook portion 732 is hooked on the protrusion 12, and the upward movement of the pillar panel STc is restricted. In other words, the locked state is maintained.

[0059] The hole engagement unit 51 has a base plate 510 and an abutting rotating piece 513. The base plate 510 is a roughly triangular plate-like component that extends in the front-rear direction and has a large width in the up-down direction at the center portion in the front-rear direction. The front end portion of the base plate 510 is supported by the fourth shaft portion 53 so as to be able to rotate freely around an axis extending in the left-right direction. A pressing piece portion 511 extending downward is formed at the rear end portion of the base plate 510. In addition, a rotation limiting pin 512 protruding to the left (in front of the paper) is provided at a slightly rearward position of the roughly central portion of the base plate 510. The base plate 510 rotates in conjunction with the link unit 6. Figure 2 Furthermore, the pressing piece 511 is formed so as to protrude downward at a position where the third rotation direction becomes the downward direction in the substrate 510, for example, at a top end on the rear side.

[0060] The substrate 510 is urged counterclockwise around the axis of the fourth shaft portion 53 by an unillustrated urging member (see arrow FR3) and is restrained from moving in the direction of rotation by an unillustrated restraining structure. Figure 2 The substrate 510 is rotated counterclockwise from the rotation position shown. Figure 2 From the shown posture, a torque opposing the urging torque shown by arrow FR3 is applied, thereby enabling clockwise rotation.

[0061] The base plate 510 is provided with a rotation shaft portion 52 having an axis extending in the left-right direction at the upper portion of the center portion in the front-back direction. A contact rotation piece 513 is rotatably supported on the rotation shaft portion 52. The contact rotation piece 513 is surrounded by a force applying member (not shown). Figure 2 The lower edge portion of the rear of the abutting rotating piece 513 abuts against the rotation limiting pin 512 of the base plate 510, thereby being restricted from further counterclockwise rotation.

[0062] The upper edge of the contact rotating piece 513 is formed into a contact portion 513a having an inclined surface that tilts upward toward the front. The contact portion 513a is close to the link plate 62 in the locked state.

[0063] The contact rotation piece 513 is given a clockwise urging torque that resists the urging torque indicated by the arrow FR4 , thereby being rotatable in the clockwise direction.

[0064] If the substrate 510 surrounds Figure 2 The top pressing piece 511 passes through the gap 82d of the lower rail 82 and moves toward the main rail 5a of the upper rail 5 located below. The relay unit 9 is installed at a position below the pressing piece 511 in the main rail 5a. Figure 4 The relay unit 9 will be described.

[0065] The relay unit 9 includes a housing 91, a relay pin 93, and a coil spring 94. The housing 91 is a box-shaped component that is square when viewed from above, open at the top, and has a bottom wall 92. A bottom hole 92a, a circular through-hole, is formed in the center of the bottom wall 92. The relay pin 93 has a disc-shaped head 931 and a cylindrical shaft 932 extending downward from the center of the head 931. The relay pin 93 is housed inside the housing 91 with its head facing upward. A flange 933 is formed on the shaft 932 near the head 931, protruding radially around the entire circumference. The coil spring 94 is a compression spring, with its upper end abutting the bottom surface of the flange 933 and its lower end abutting the bottom wall 92. A pressing portion 92b is formed at the upper end of the housing 91, protruding inward to cover a portion of the upper edge of the head 931 of the relay pin 93. The pressing portion 92b prevents the relay pin 93 from moving upward and falling off thereof.

[0066] Relay pin 93 in Figure 4 In the natural state shown, the lower end of the shaft portion 932 is in a state where it is slightly shaken and inserted into the bottom hole 92a of the bottom wall 92. The housing 91 is mounted on the main body rail 5a by an engaging structure (not shown).

[0067] A through-hole 82a1 is formed in the center of the bottom wall 82a of the lower rail 82 in the left-right direction, extending vertically through the bottom wall 82a. The through-hole 82a1 is formed in the front-to-back direction so that it is concentric with the bottom hole 92a of the housing 91 when the upper rail 5 is in the predetermined sliding position that enables the pop-up seat ST. The through-hole 82a1 has an inner diameter slightly larger than the outer diameter of the shaft 932 of the relay pin 93, allowing at least the lower end of the shaft 932 to enter. A large-diameter exhaust hole FLp1 is formed concentrically with the through-hole 82a1 in the underfloor panel FLp.

[0068] The lock mechanism RK includes the above-mentioned relay unit 9 and performs the lock release operation described next.

[0069] (Unlocking action of the locking mechanism RK)

[0070] Main references Figure 3 and Figure 5 Explain the locking structure RK Figure 2 The locked state shown acts as an unlocking action.

[0071] exist Figure 3 If the occupant resists the arrow FR2 (see Figure 2 ) and operates a release lever (not shown), the release wire 65 is stretched as shown by arrow DR3.

[0072] As a result, the link plate 62 rotates clockwise by a predetermined angle from position P1, indicated by the two-dot chain line, in the locked state, to position P2, indicated by the two-dot chain line (see arrow DR4). This rotation causes the link plate 62 to interfere with the abutting portion 513a of the abutting rotating piece 513 of the hole engagement unit 51, causing the abutting rotating piece 513 to rotate counterclockwise. The abutting rotating piece 513 is restricted from counterclockwise rotation relative to the base plate 510, and the abutting portion 513a has an inclined surface. This allows the abutting rotating piece 513 and the base plate 510 to be pressed together, rotating clockwise around the fourth shaft portion 53 (see arrow DR5). As the base plate 510 rotates clockwise, the pressing piece 511 formed at the rear end descends, abutting against and pressing the head portion 931 of the relay pin 93 of the relay unit 9. The pressing piece 511 abuts against the central portion of the head portion 931 that does not interfere with the pressing portion 92b.

[0073] Here, when the sliding position of the seat ST is not the pre-set position for springing up, the through hole 82a1 of the lower rail 82 and the shaft portion 932 of the relay pin 93 are misaligned in the front-to-back direction. Therefore, the shaft portion 932 abuts against the bottom wall portion 82a of the lower rail 82 and is not pressed down. In other words, the link plate 62 cannot be rotated further clockwise from position P2. When the link plate 62 is at position P2, the relay plate 72 is Figure 2 As shown, the counterclockwise rotation of the hook plate 73 is restricted, and thus the locked state is maintained.

[0074] On the other hand, when the sliding position of the seat ST is at the pre-set position where it can be bounced, the axis of the relay pin 93 is substantially consistent with the axis of the through hole 82a1, and the shaft portion 932 of the relay pin 93 can enter the through hole 82a1. Figure 5As shown, the relay pin 93 is further pressed down by the repulsive force of the coil spring 94 exerted by the pressing piece 511 which descends as shown by the arrow DR91. As a result, the link plate 62 further rotates clockwise from the second position P2, pressing the contact rotating piece 513 downward, causing the relay pin 93 to be inserted into the through hole 82a1, and then disengage in front of it and continue to rotate until it reaches the position P2. Figure 3 Position P3 is shown as a solid line (see DR52).

[0075] When the link plate 62 reaches the position P3, the connecting rod 64 moves further forward (arrow DR42), and the relay plate 72 continues to rotate clockwise and counterclockwise (arrow DR53), so the engagement between the relay plate 72 and the hook plate 73 is released. Figure 2 Turn the key counterclockwise (arrow DR54) to release the lock.

[0076] On the other hand, the link plate 62 moves from the position P2 to the position P3, that is, moves away from the front of the abutting rotating piece 513. As a result, the base plate 510 is forced to move by the torque (see Figure 2 FR3) counterclockwise to return to Figure 2 The relay pin 93 also moves upward from the through hole 82a1 and returns to the Figure 4 The location of the natural state is shown.

[0077] As a result, the hook portion 732 rotates counterclockwise about the second shaft portion 75 and disengages from the space V1 (see arrow DR54). This releases the hook portion 732 from the protrusion 12 of the hook engagement member 1, resulting in the unlocked state. Since the hook portion 732 is allowed to rise in the unlocked state, the seat ST can be lifted. Thus, the relay pin 93, pressed by the pressing piece 511, functions as an unlock detector, detecting whether the seat ST's sliding position is at the predetermined unlockable position.

[0078] Regarding the front locking mechanism RK, the release wire 65 is also pulled, causing the link plate 62 to rotate clockwise, pulling the connecting rod 64f connected to the rod connecting portion 631 rearward (see arrow DR41). This causes the relay plate 72 to rotate clockwise (see arrow DR53), interlocking with the rear locking mechanism RK to release the lock.

[0079] If the release line 65 is pulled and the lock is released, the passenger's hand is released from the release lever. As a result, the pulling of the release line 65 is released, and the link plate 62 is moved by the arrow FR2 (see FIG. Figure 2 ) shows the torque applied to the counterclockwise direction and returns to Figure 2The link plate 62 abuts against the restored abutting rotating piece 513 from the front during the counterclockwise rotation. Here, the counterclockwise rotation of the abutting rotating piece 513 in one direction is restricted, and the clockwise rotation in the other direction is allowed. Therefore, the abutting rotating piece 513 is pressed from the front side by the link plate 62 and rotates clockwise. As a result, the link plate 62 is allowed to move to the rear through the abutting rotating piece 513. After the link plate 62 passes the abutting rotating piece 513, the abutting rotating piece 513 rotates counterclockwise by the applied torque shown by the arrow FR4 and returns to the state shown. Figure 2 Shown posture.

[0080] As a result, the link plate 62 rotates clockwise (in the first direction) to abut the contact rotating piece 513 from the rear side (first side). The contact rotating piece 513 converts the force received from the link plate 62 during the contact into a clockwise rotational force (rotation in the third rotational direction) on the base plate 510. Furthermore, the contact rotating piece 513 itself rotates to allow counterclockwise rotation (in the second direction opposite to the first direction) caused by the contact from the front side (second side) of the link plate 62, thereby preventing the hook plate 73 from rotating. In this way, the contact rotating piece 513 functions as a so-called one-way clutch.

[0081] If the occupant again Figure 3 When the seat ST that has been lifted up in the unlocked state is rotated down and locked, the parking bracket (not shown) first contacts the upper surface of the base 11 of the hook engaging member 1. The parking bracket contacts the upper surface of the base 11, causing the hook plate 73 to resist the locking. Figure 2 The hook plate 73 rotates clockwise due to the applied torque indicated by the arrow FR1 shown. At this time, the hook plate 73 rotates so that its upper edge slides on the lower edge of the relay plate 72. As the hook plate 73 rotates clockwise, the hook portion 732 at the top enters the space V1 below the protrusion 12 of the hook engaging member 1. Furthermore, the portion of the hook plate 73 that slides relative to the relay plate 72 moves from the upper edge to the corner 734. The corner 734 abuts against the restricting portion 721a, which forms the inner corner of the base of the protrusion 724 of the relay plate 72, thereby achieving a locked state in which unlocking is prevented.

[0082] The locking structure RK of the embodiment described above includes a pressing piece 511 formed in the lowered position of the base plate 510, which is rotated by pulling the release wire 65; and a relay unit 9 mounted on the upper rail 5 and having a relay pin 93 that relays the lowering movement of the pressing piece 511. A through hole 82a1 is formed in the bottom wall 82a of the lower rail 82. This through hole 82a1 allows the lowered relay pin 93 to enter only when the seat ST is in the retractable sliding position. In this structure, whether the lock can be released is determined by whether the relay pin 93, which descends in response to the rotation of the base plate 510, can enter the through hole 82a1.

[0083] As described above, the locking structure RK achieves a structure that allows unlocking to be selected simply by forming a small hole, or through-hole 82a1, that allows the thin shaft portion 932 of the relay pin 93 to enter. Consequently, the locking structure RK ensures that the bending strength of the portion of the lower rail 82 where the through-hole 82a1 is formed is substantially equal to that of the other portions. Furthermore, the undesirable situation in which small objects that have fallen into the lower rail 82, such as those falling further through the through-hole 82a1 and becoming unrecoverable, is virtually eliminated. Consequently, the locking structure RK reduces the likelihood of problems arising from the lower rail 82.

[0084] Furthermore, due to the provision of the relay unit 9, even if the downward stroke of the pressing piece 511 accompanying the rotation of the base plate 510 is reduced, that is, even if the rotation angle of the base plate 510 is reduced, it is still possible to determine whether the lock can be released using the through hole 82a1 in the bottom wall portion 82a of the lower rail 82. As a result, the hole engagement unit 51 becomes more compact, thereby achieving cost reduction and space saving.

[0085] The present invention is not limited to the above-described embodiment and sequence, and various modifications can be made without departing from the gist of the present invention.

[0086] The material of each component is not limited to the above, and all of them may be made of metal, or a component may have a sliding portion, or the sliding portion may be formed of a resin with high sliding properties such as polyacetal resin.

[0087] Means of transportation are not limited to vehicles such as cars and trains, but also include flying objects such as ships, airplanes, and drones, meaning moving objects that carry people.

[0088] In the above description, the up, down, left, right, front, and back directions are given as examples for the sake of convenience. The direction of the pop-up seat cushion ST relative to the vehicle is not specified but is free.

[0089] Description of Reference Numerals

[0090] 1 hook snap-fit ​​part

[0091] 11 base

[0092] 12 protrusions

[0093] 2 rollers

[0094] 2a grounding part

[0095] 2b shaft

[0096] 3-pin lifting unit

[0097] 31 column

[0098] 32 pins

[0099] 321 pin body

[0100] 322 pin base

[0101] 323 guide part

[0102] 33 coil spring

[0103] 4 link units

[0104] 41 3rd axis

[0105] 42 link board

[0106] 421 Carding Department

[0107] 421a fixing hole

[0108] 422 extension

[0109] 431, 432 rod connection part

[0110] 45 pressing part

[0111] 451 pressure plate

[0112] 451a contact portion

[0113] 452 connection part

[0114] 453 bend

[0115] 5 on track

[0116] 5a Main track

[0117] 5a1 through hole

[0118] 51-hole snap-in unit

[0119] 510 substrate

[0120] 511 pressing piece

[0121] 512 rotation limiting pin

[0122] 513 abutting rotating piece

[0123] 513a contact portion

[0124] 52 rotating shaft

[0125] 53 4th axis

[0126] 6 link units

[0127] 61 3rd axis

[0128] 62 link board

[0129] 621 Carding Department

[0130] 621a fixing hole

[0131] 631, 632 rod connection

[0132] 64, 64f connecting rod

[0133] 65 release line

[0134] 7 Locking part

[0135] 72 relay board

[0136] 721 base

[0137] 721a Restriction Department

[0138] 722 connecting arm

[0139] 723 connection

[0140] 724 salient

[0141] 73 hook plate

[0142] 731 base

[0143] 731a 1st extension

[0144] 731b Second extension

[0145] 732 hook

[0146] 733 protruding pin

[0147] 734 corner

[0148] 74 1st shaft

[0149] 75 2nd shaft

[0150] 76 shockproof plate

[0151] 76a Pin contact portion

[0152] 81 external lower track

[0153] 82 inner lower track (lower track)

[0154] 82a bottom wall portion

[0155] 82a1 through hole

[0156] 82b side wall

[0157] 82b1 mobile track part

[0158] 82c top wall

[0159] 82d gap

[0160] 82e cutting part

[0161] 9 relay units

[0162] 91 Case

[0163] 92 bottom wall

[0164] 92a bottom hole

[0165] 92b pressing portion

[0166] 93 relay pin

[0167] 931 Head

[0168] 932 shaft

[0169] 933 flange

[0170] 934 below

[0171] 94 coil spring

[0172] FL floor

[0173] FLa wheel cover

[0174] FLp underfloor panel

[0175] FLp1 exhaust vent

[0176] P1, P2, P3 positions

[0177] RK locking structure

[0178] ST Seat

[0179] STa hinge

[0180] STb upper track

[0181] STc column panel

[0182] STc1 cutout

[0183] STc2 reentrant part

[0184] ST1 Seat

[0185] ST1f Seat Frame

[0186] ST2 Seat Back

[0187] ST2f Seat and Back Frame

[0188] V8 and V1 space

Claims

1. A locking structure for a pop-up seat for a vehicle, wherein the pop-up seat is rotatably supported on one side of an outer upper rail that slides in engagement with an outer lower rail, and is lockable and removable relative to an inner upper rail that slides in engagement with an inner lower rail by a locking portion provided on the inner side, and can be unlocked at a predetermined sliding position. The locking portion has: a hook engaging component, the hook engaging component being mounted on the inner upper rail; a hook plate rotatably provided on one side of the pop-up seat for a vehicle, and being engaged with the hook engaging member by rotating in a first rotation direction to enter a locked state; a link plate that rotates to rotate the hook plate in a second rotation direction opposite to the first rotation direction; A pressing piece that descends in conjunction with the rotation of the link plate; and a relay unit provided on the inner upper rail and having a lock release detector which is pressed down by the lowered pressing piece; The inner lower rail has a hole into which the lowered lock release detector can enter only when the vehicle pop-up seat is located at the predetermined sliding position. When the link plate rotates after the lock release detector enters the hole, the hook plate rotates in the second rotation direction, and the lock is released.

2. The locking structure of the pop-up seat for a vehicle according to claim 1, wherein: The base plate is provided with a base plate that rotates in a third rotation direction in conjunction with the rotation of the link plate, wherein the pressing piece is formed to protrude downward at a portion of the base plate where the third rotation direction becomes a downward direction. The lock release detector is a pin extending in the vertical direction. When the upper end portion is pressed downward by the pressing piece, the lower end portion protrudes downward from the inner upper rail and reaches the bottom wall portion of the inner lower rail.

3. The locking structure of the pop-up seat for a vehicle according to claim 2, wherein: The hole is formed in the bottom wall portion.

4. The locking structure of the pop-up seat for a vehicle according to claim 2 or 3, wherein: The base plate has a contact rotation piece that is restricted from rotating in only one direction. When the link plate rotates so as to rotate the hook plate in the second rotation direction, the link plate abuts against the abutting rotation piece from the first side rotating in the one direction. The contact rotation piece converts the force received by the link plate when contacting from the first side into a rotational force of the base plate in the third rotational direction. The link plate rotates when contacting from a second side opposite to the first side, thereby preventing the base plate from rotating.

Images