JPH06481B2 - Vehicle safety device with foldable moving seat - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle having a folding movable seat, and more particularly to a vehicle safety device such as a van-type vehicle for both passenger loading and luggage loading.

[Prior Art] Conventionally, in the case of a rear seat in a van-type vehicle, for example, a so-called one-box car, when passengers are prioritized, the seats are moved rearward so that the seat cushion can be seated, and when luggage is prioritized Has proposed a vehicle having a folding type movable seat in which a seat cushion is folded and moved forward to increase a loading capacity (for example, see Japanese Utility Model Laid-Open No. 63-179247).

This one is equipped with a seat lock mechanism that locks the seat in each state and a seat lock release operation mechanism that unlocks them, and an upper with a folding movable seat fixed on the lower rail fixed to the floor surface. And a slide lock mechanism that allows the rail to slide and prevents movement of the upper rail at a predetermined position of the lower rail.

[Problems to be Solved by the Invention] However, in such a rear seat that can be moved and folded, if a change to a seatable state of the seat cushion is allowed at all positions of the lower rail,
There is a risk of being seated in a position that is unsuitable for sitting, that is, in a position where the slide lock mechanism is not functioning.
There is a risk that the rear seat may suddenly move in the event of a vehicle collision, leading to an unexpected accident.

An object of the present invention is to solve the above-mentioned conventional problems, and by disabling seating at a position other than a slide lockable position, a vehicle safety device provided with a foldable moving seat capable of reliably preventing danger. To provide.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a seat lock mechanism that locks a seat cushion in a seatable state and a folded state, respectively, and a seat lock by the seat lock mechanism. A foldable seat having a seat lock release operation mechanism for releasing, an upper rail member movably engaged with a lower rail fixedly mounted on a vehicle floor, and the foldable seat fixedly mounted on the lower rail, and the lower rail and the upper rail member. A slide lock mechanism provided between the lower rail and a predetermined position of the lower rail to prevent relative movement between the two, and a seat lock release operation in the folded state of the seat lock release operation mechanism is allowed only at the predetermined position of the lower rail. Allowed except for /
And a prohibition mechanism.

[Operation] According to the present invention, the seat cushion is locked by the seat lock mechanism in both the seatable state and the foldable state. Further, the upper rail member to which the folding sheet is fixedly mounted is slide-locked at a predetermined position of the lower rail by a slide lock mechanism so as to be immovable relative to the lower rail. Then, when the seat lock release operation mechanism is operated to release the seat lock in the folded state, the allow / prohibit mechanism that allows this operation only at a predetermined position of the lower rail and prohibits the operation other than that operates the slide lock. It is prohibited to change the seat cushion to a seatable state except at a predetermined position of the lower rail.

Therefore, there is no possibility of being seated at a position other than the slide lockable position, and the unexpected danger is surely prevented.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show a vehicle seat applied to the present invention.
An example of 10 is shown.

The seat 10 includes a pair of left and right upper rail members 14 that move along a pair of left and right lower rails 12 that are fixedly installed on the vehicle floor, and a pair of left and right legs that serve as bases that are fixedly installed on the upper rail members 14. 16 and a seat cushion 20 rotatably supported on the leg 16 by a pivot pin 18 between a seatable state shown in FIG. 1 and a folded state shown in FIG. Seat back 22 supported with adjustable tilt angle via reclining mechanism
And have. Then, the seat 10 is moved forward with the seat cushion 20 being folded, and a luggage loading space is secured behind it. A first striker 24 is fixed to the central portion of the lower surface of the seat cushion 20, and a second striker 26 is fixed to the strength member of the seat cushion 20 at the rear end portion of the lower surface.

The seat 10 is used, for example, in a van type vehicle as shown in FIG. 12, and is the first seat 28 which is the driver's seat in the front row and the second row in the second row detachably provided on the vehicle floor. Used as the third sheet in the third row together with the second sheet 29. The third seat 10 is movably attached to the lower rail 12 arranged in the front-rear direction from the rear of the first seat 28 to the seating position of the third seat 10.

Therefore, as shown in FIG. 12A, the first seat 28 and the second seat 29 are in predetermined positions, and the third seat 10 is in the I position, and the first seat 28 is in a seatable state, and FIG. As shown in B, the third seat 10 is folded and the second seat 29 is in the second position at the rear II position, and the second seat 29 is removed from the vehicle floor as shown in FIG. 12C. And the third seat 10 is moved to the position III of the second seat 29, which is the seating position, and the third seat is folded as shown in FIG. The fourth state at the side IV position can be obtained.

Further, the leg portions 16 of the third seat 10 are fixedly mounted on the upper surface of the upper rail member 14 as shown in FIG. That is, the upper rail member 14 has a vertical portion as shown in FIG.
14A ₁ and the substantially L-shaped cross section of the upper rail body 14A and a horizontal portion 14A _2, projections provided on the lower edge of the vertical portion 14A ₁ 1
4A ₃ is fixed by welding while being engaged with the inner reinforcing member 14B having a substantially U-shape having an opening at the top, and the protrusion 14A ₃ of the vertical portion 14A ₁ and the inner reinforcing member 14B are also fixed by welding. And a substantially U-shaped outer reinforcing member 14C. Then, via the front and rear mounting brackets 14D and 14E fixed to the horizontal portion 14A ₂ of the upper rail main body 14A,
The leg portion 16 described above is fixed.

The lower rail 12 has a substantially V-shaped cross section, has an opening 12A in the longitudinal direction at the center upper portion thereof, and is entirely fixed in a groove formed on the vehicle floor. In this embodiment, two lock holes 12B are formed in a line in the longitudinal direction at predetermined positions on both sides of the upper surface of the lower rail 12 at positions I, II, III and IV described above.

Further, rollers 14F and 14G are rotatably pivoted at the front end and the rear end of the vertical portion 14A ₁ of the upper rail member 14, respectively, and are driven along the lower surface of the lower rail 12,
The vertical portion 14A ₁ of the upper rail member 14 described above is provided with the opening 12A.
It is arranged to move inside.

Reference numeral 30 denotes a latch member that constitutes a part of a slide lock mechanism that locks the upper rail member 14 to the lower rail 12, and in this embodiment, the horizontal portion 30A, the vertical portion 30B, and the hook portion 30.
It is composed of two plates with C and 30C, and the hook 30
C, latch tooth 30C ₁ that engages from below upwards into the lock hole 12B to the distal end of the 30C described above are formed, respectively. Horizontal part 30A of the latch member 30 and the upper rail member 1
The latch member 30 to the upper compression spring 32 is under compression to between the horizontal portion 14A ₂ of 4, i.e. the locking hole 12 a latch tooth 30C ₁
It is biased in the direction to engage B. And the latch member 3
As for 0, the vertical portion 30B is the vertical portion 14A of the upper rail member 14.
The formed notch 14A in ₄ to _1, is housed in the hook portion 30C notch 14B within ₁ formed inside the reinforcing member 14B, further the substrate 34 which is fixed to the horizontal portion 14A ₂ of the upper rail member 14 It is arranged to penetrate the formed notch 34A. Board 34
A lid member 36 having an opening window 34A formed on the upper surface thereof is fixed by screws 38 (see FIG. 3).

Further, the mounting bracket 14D at the front end portion of the upper rail member 14 allows the seat unlocking operation in the folded state of the seat unlocking operation mechanism, which will be described later, only at a predetermined position of the lower rail 12, and prohibits it at other positions. / Prohibition mechanism 40 is provided. Ie 42
Is an operating rod in which a bent portion 42A is formed in the upper part and a guide pin 42B is planted in the middle abdominal part, and holes (not shown) formed in the mounting bracket 14D and the horizontal portion 14A ₂ of the upper rail member 14 respectively. And is inserted into the opening 12A of the lower rail 12. Further, the mounting bracket 14D has a substantially U-shaped guide frame 44 formed with a through hole 44A through which the operating rod 42 is inserted in the upper wall and a guide elongated hole 44B for guiding the guide pin 42B in the opposite wall.
Is fixed by welding, and the guide pin 42B is
As a result, a compression spring 46 for urging the operating rod 42 upward is contracted.

Furthermore, an escape hole 12C for allowing a seatable state of the seat cushion 20 is provided at a predetermined position on the lower surface of the lower rail 12,
In this embodiment, holes I and III are provided, and the lower end of the operating rod 42 can enter the escape hole 12C.

Next, the seat lock mechanism 100, the lock release operation mechanism thereof, and the lock release operation mechanism of the slide lock mechanism described above will be described.

The seat lock mechanism 100 is shown in FIGS. 3 and 5 to 9.
As shown in the drawing, one base plate 102 having a substantially U shape in a plan view, and a second base plate 104 fixed to the first base plate 102 to form an intermediate wall 104A.
And both are fixed to the front end wall of the leg portion 16. 106 is a wald nut for this fixing.

Reference numeral 108 denotes a first rotation shaft rotatably supported by the first and second base plates 102 and 104, and an operation lever 110 for unlocking the seat lock is fixed to be relatively non-rotatable. A locking plate 112 for locking a first latch member, which constitutes a part of a seat lock mechanism in a seatable state described later, and a lock detection, which constitutes a part of an unlock operation prohibiting mechanism, on the first rotating shaft 108. The levers 114 are rotatably pivotally attached, respectively, and the cam plate 116 that comes into contact with the bent portion 42A of the actuating rod 42 and the lock claw member 118 that forms a part of the unlock operation prohibiting mechanism relatively rotate. It is permanently fixed.

Reference numeral 120 denotes the above-mentioned first latch member, which is a clockwise direction in FIG. 7 with a winding spring 124 wound around a bearing shaft 122 fixed to the intermediate wall 104A of the first base plate 102 and the second base plate 104. Being energized. Thus, the first base plate 102 and the second base plate 1
On the upper side of the intermediate wall 104A of 04, guide notches 102A and 104B for receiving the above-described first striker 24 are formed, respectively, and the first latch member 120 has an abutting portion where the first striker 24 abuts. A locking notch 120B that is continuous with 120A and locks the first striker 24 is formed. Further, the first latch member 120 has a locking step 120C capable of locking the edge of the locking plate 112 described above.

As is apparent from FIGS. 10 and 11, the locking plate 112 described above has a substantially L-shaped side view,
An end edge of one leg 112A can be locked to the locking step 120C of the first latch member described above, and a bent portion 112C is formed at the tip of the other leg 112B. The locking plate 112 is a winding spring 126 wound around the first rotating shaft 108, and its bent portion 112C engages with the above-mentioned operating lever 110 to rotate in a counterclockwise direction in FIG. Biased in the direction.

The operation lever 110 is locked with the above-mentioned second striker 26,
It also serves as a second latch member forming a part of the seat lock mechanism in the folded state, and the whole is hook-shaped, and the base end is fixed to the first rotating shaft 108 as described above. Therefore, a locking notch 110B for locking the second striker 26 is formed at the outer edge portion so as to be continuous with the contact portion 110A with which the second striker 26 contacts. Further, the inner edge portion is provided with a bent portion 110C, and the other end of the tension spring 128 whose one end is locked to the first base plate 102 is locked to this bent portion 110C, whereby the counterclockwise direction is shown in FIG. It is naturally held by the first base plate 102 while being biased in the circumferential direction.

The lower side wall and the rear wall of the first base plate 102 have guide cutouts 10 for receiving the above-described second striker.
2B is formed.

Further, a stopper 102C is formed on the first base plate 102 by being cut and raised, and an inner edge portion of the operation lever 110 is brought into contact with the stopper 102C to regulate the rotation amount to a predetermined amount.

Next, the lock detection lever 114 is formed in a J shape, and its end portion is located in the guide notch 102B described above, and the second striker
An engagement notch 114A that engages with 26 is formed. further,
A first bent portion 114B and a second bent portion 114C are formed at the head end portion, and one end of the first bent portion 114B is anchored to a second rotary shaft 130, which will be described later. The other end of is locked (5th
7), the lock detection lever 114 is biased counterclockwise in FIG.

The second rotation shaft 130 is rotatably supported by the first and second base plates in parallel with the first rotation shaft 108, and the stopper member 134 and the arm member 136 forming a part of the lock release operation prohibiting mechanism are provided. It is fixed so that it cannot rotate relative to it.

The stopper member 134 is, as shown in FIG.
The first and second points are symmetrical with respect to the axis of the rotating shaft 130.
The first stopper portion 134A having stopper portions 134A and 134B
The lock detecting lever 114 can be locked to the second bent portion 114C, and the second stopper portion 134B can be locked to the locking piece 102D formed by cutting and raising the first base plate 102.

The tip of the arm member 136 is connected to the connecting ring 138 for operating the slide lock mechanism described above, and the claw 118A of the lock claw member 118 described above prevents rotation of the arm member 136 in the middle abdomen thereof. Engagement notches 136A are formed to engage with each other. Further, the arm member 136 is formed with an arcuate portion 136B capable of contacting the claw 118A (see FIG. 9).

A winding spring 140 is wound around the second rotating shaft 130, and the arm member 136 and thus the second rotating shaft 130 are biased counterclockwise in FIG. 7 and clockwise in FIG. Is brought into contact with a stopper piece 102E formed by cutting and raising the first base plate 102 (see FIG. 8).

Reference numeral 142 denotes a shock absorber provided in the guide notch 102B of the first base plate 102, and the second base plate is provided to surround and hold the elastic body 142A except for the abutting portion between the elastic body 142A and the second striker 26. Case member 142B fixed to 102
And have.

Further, as shown in FIGS. 1 and 2, first and second operation handles 144 and 146 made of resin are fixed to the tip end of the operation lever 110 and the shaft end of the second rotary shaft 130, respectively.

Further, a cam plate 201 rotatably supported by a support shaft 202 supported by the leg portion 16 is connected to the rear end of the connection link 138. The cam surface of the cam plate 201 is the lid member 3 described above.
It faces the opening window 36A of 6 and is in contact with the horizontal portion 30A of the latch member 30. The cam surface of the cam plate 116 fixed to the first rotating shaft 108 is the operating rod 42 as described above.
Is in contact with the bent portion 42A.

The operation of this embodiment having the above configuration will be described below.

When the third seat 10 is in the position I shown in FIG. 12 and the seat cushion 20 is in the seatable state shown in FIG. 1, the first striker 24 moves the first and second strikers 24 as shown in FIG. The first latch member 120 is received in the guide notches 102A and 104B of the base plates 102 and 104 and is
Is locked in the locking notch 120B. The first latch member 120 is rotated against the urging force of the coil spring 124 as described above, but its locking step 120C is locked by the end edge of the leg 112A of the locking plate 112. The movement is blocked and the locked state is maintained.

Then, in the seatable state at the position I, the lock detection lever 114 is rotated counterclockwise in FIG. 10 by the biasing force of the tension spring 132 as described above, and the second bent portion 114C of the lock detection lever 114 is rotated. First stopper portion 134 of stopper member 134
It is engaged with A. Therefore, the rotation of the second rotation shaft 130 by the second operation handle 146 and the rotation of the arm member 136 are prevented, and the latch member 3 via the connecting link 138 is prevented.
It is impossible to push down 0, that is, to release the slide lock mechanism.

In the consuming slide locked state, engages latch teeth 30C ₁ of the latch member 30 with the urging force of the compression spring 32 into the lock hole 12B of the lower rail 12 as shown in Figure 4.

When releasing the seat lock of the seatable state of the third seat 10, the first operation handle 14 in FIG. 10 is operated.
4 is pulled upward, that is, the operating lever 110 is rotated clockwise together with the first rotating shaft 108 until it abuts the stopper 102C. Then, the bent portion 112C is biased in the counterclockwise direction by the above-mentioned winding spring 126, and the bent portion 112C is moved to the operating lever 11
The locking plate 112 which is engaged with 0 also operates the lever 11
It rotates integrally with 0, and the engagement between the edge of the leg 112A and the engagement step 120C of the first latch member 120 is released. As a result, the first latch member 120 is returned to the original position by the biasing force of the above-mentioned winding spring 124.

Therefore, the seat cushion 20 can freely rotate with this body.

By the way, during the above-described rotation operation of the operation lever 110, the lock claw member 118 fixed to the first rotation shaft 108 also rotates at the same time, and the claw portion 118A of the lock claw member 118 engages the engagement cutout 1 of the arm member 136.
Arm member 13 engaged with 36A and operated by the second operation handle 146
Since the rotation of 6 is blocked, the unlocking operation of the slide lock mechanism is prohibited.

On the other hand, in order to move the seat cushion 20 from the freely rotating state to the folding position and lock the seat cushion,
It suffices to simply rotate the 20 around the pivot pin 18, and in this way the second striker 26 first engages the abutment 110A and the lock of the operating lever 110 located in the guide notch 102B of the first base plate 102. The operation lever 110 and the lock detection lever 114 are rotated by being in contact with the detection lever 114, and are locked by the locking notch 110B and the engaging notch 114A. At this time, the impact of the second striker 26 is absorbed by the above-described shock absorber 142 provided in the inner portion of the guide cutout 102B.

This folding lock state is shown in FIG. In this state, the lock detection lever 114 described above is operated by the tension spring 1 described above.
It is rotated clockwise by the second striker 26 against the urging force of 32, and the second bent portion 114C and the stopper member 13 are rotated.
The engagement or disengagement with the fourth stopper portion 134A is released, and the slide lock mechanism can be released.

That is, when releasing the slide lock mechanism, the second lock
When the operation handle 146 is pulled upward and the second rotation shaft 130 is rotated, the arm member 136 is also rotated, and the cam plate 201 is rotated around the support shaft 202 via the connection link 138. Then, the latch member 30 is pushed down against the urging force of the compression spring 32, and the lock hole 12B of the lower rail 12 of the latch tooth portion 30C ₁ is pressed.
Is disengaged. Therefore, the upper rail member 14
As a result, the third seat 10 can be freely moved along the lower rail 12, and, for example, from the position I to the position II, or when the second seat 29 is removed,
It can be moved to position III or IV.

In addition, the arm member 136 with the operation handle 146 described above.
During the rotating operation of the claw portion 118A of the lock claw member 118
From contacting the arcuate portion 136B of the arm member 136,
The rotation of the first rotation shaft 108 is blocked, and the unlocking operation of the seat lock mechanism is prohibited.

In addition, the lock of the folding lock state of the seat 10 is, for example,
First operating handle 14 to release in position II or IV
Even if the operation lever 110 is rotated by pulling up the upper portion 4, the cam surface of the cam plate 116 fixed to the first rotating shaft 108 on which the operation lever 110 is fixed is fixed to the upper rail member 14.
The bent portion 42 of the operating rod 42 guided by the guide frame 44 fixed to the
The lower end of the operating rod 42 is in contact with the lower rail 12
Since it is in contact with the lower surface of the operating lever 42, the downward movement of the operating rod 42 and the rotation of the operating lever 110 are prevented, and the seat lock in the folding lock state cannot be released. However,
At the position I or III of the third seat 10 where the occupant can safely sit, the lower end of the operating rod 42 is the escape hole 12C of the lower rail 12.
When the cam plate 116 enters, the rotation of the cam plate 116 and the rotation of the operation lever 110 are permitted. Therefore the locking notch 1
The restraint of the second striker 26 that has been locked to 10B is released, and the seat cushion 20 is allowed to freely rotate, so that the seat cushion 20 can be seated.

[Effects of the Invention] As is apparent from the above description, according to the present invention, there is provided a mechanism that allows the seat lock release operation in the folded state of the seat lock release operation mechanism only at a predetermined position of the lower rail and prohibits the rest. Since it is provided, it is possible to disable seating at positions other than the slide lockable position,
Danger can be reliably prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are side views showing an example of a vehicle seat applied to the present invention, showing a seatable state and a folded state, respectively. 3 is a perspective view showing an embodiment of the present invention, FIG. 4 is a sectional view showing a slide lock mechanism portion of an embodiment of the present invention, and FIG. 5 is a seat lock mechanism portion of an embodiment of the present invention. FIG. 6 is a plan view of the same, FIG. 6 is a rear view of the same, FIG. 7 is a left side view of the same without the locking plate for easy understanding, and FIG. 8 is a right side view of the same. FIG. 9 is a sectional view taken along the line BB in FIG. 5, FIGS. 10 and 11 are perspective views taken along the line CC in FIG. 5 for explaining the operation of the embodiment of the present invention, and FIG. It is a side view outline for explaining each use mode. 10 ... Seat, 12 ... Lower rail, 12A ... Opening part, 12B ... Lock hole, 12C ... Escape hole, 14 ... Upper rail member, 16 ... Leg part, 18 ... Pivot pin, 20 ... Seat cushion, 22 ... Seat back, 24 ... First striker, 26 ... Second striker, 30 ... Latch member, 40 ... Allow / prohibit mechanism, 42 ... Actuating rod, 100 ... Seat lock mechanism, 102 ... First base plate, 104 ... Second base plate 108 ... First Rotation shaft, 110 ... Operation lever, 112 ... Locking plate, 114 ... Lock detection lever, 116 ... Cam plate, 118 ... Lock claw member, 120 ... First latch member, 130 ... Second rotation shaft, 134 ... Stopper member, 136 ... Arm member, 138 ... Connection link, 144 ... First operation handle, 146 ... Second operation handle, 201 ... Cam plate.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hidemasa Hirakui 1-14-7 Maruyama, Isogo-ku, Yokohama, Kanagawa Oi Manufacturing Co., Ltd. (72) Hideki Irie 771, Koen, Ayase, Kanagawa Ikeda Bussan Inside the company (72) Inventor Mikio Fujiwara 771 Kozono, Ayase City, Kanagawa Prefecture Ikeda Bussan Co., Ltd.

Claims (1)

[Claims] 1. A foldable seat including a seat lock mechanism that locks a seat cushion in its seatable state and a foldable state, and a seat lock release operation mechanism that unlocks the seat lock by the seat lock mechanism, respectively. An upper rail member movably engaged with a lower rail fixedly mounted on a vehicle floor and having the folding seat fixedly mounted, and provided between the lower rail and the upper rail member, and relative movement of the both at a predetermined position of the lower rail. And a permission / prohibition mechanism that allows the seat lock release operation in the folded state of the seat lock release operation mechanism only at a predetermined position of the lower rail and prohibits the rest of the operation. A safety device for vehicles equipped with a folding moving seat.