Rear seat for vehicle

Abstract

To obtain a rear seat for a vehicle that can suppress forward tilting of a seatback at a central portion in the vehicle width direction at the time of collision with cargo.SOLUTION: A rear seat 10 for a vehicle includes: a seatback frame 26 that is disposed on at least one side in a vehicle width direction in front of a luggage compartment of the vehicle and forms a framework of a seatback 14R; and an inner-side lock device 28 that is provided on a seatback lower side of the seatback frame 26 and at an end on the inner side in the vehicle width direction, and includes a locking object member (lock pin 38) that is configured to be lockable to and releasable from a locking member (support member 42) fixed to a central portion in the vehicle width direction of a vehicle body floor, and is locked to the locking member (support member 42) at an upright position of the seatback 14R.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a rear seat for a vehicle. [Background technology]

[0002] Patent Document 1 listed below discloses a vehicle seat unit (vehicle rear seat) that is installed in front of a trunk (luggage compartment) of a vehicle. In the technology described in Patent Document 1 listed below, the left and right seat backs are connected by a striker to prevent the two side-by-side seats from being pushed forward and opening like a double door in the event of sudden braking or a frontal collision of the vehicle due to cargo loaded in the luggage compartment. The outer sides of the left and right seats in the vehicle width direction are fixed to the side walls of the vehicle body. In this technology, the seats can be raised and lowered separately by releasing the connection by the striker. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-046241 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above technology, the vehicle width direction center portion of the rear seat for a vehicle is not fixed to the vehicle body but is simply connected to the left and right seat backs by a striker, so there is room for improvement in preventing the seat back from tipping forward in the vehicle width direction center portion when cargo in the luggage compartment collides with the back of the seat back (in the event of a cargo collision).

[0005] SUMMARY OF THE INVENTION In consideration of the above, an object of the present invention is to provide a rear seat for a vehicle that can prevent the seat back from tipping forward in the center portion in the vehicle width direction during a cargo collision. [Means for solving the problem]

[0006] The rear seat for a vehicle according to the present invention as described in claim 1 comprises a seatback frame that is arranged at the front of the luggage compartment of the vehicle on at least one side in the vehicle width direction and that forms the skeleton of the seatback, and an inner locking device that is provided at the end of the seatback frame below the seatback and on the inner side in the vehicle width direction, and is configured to be able to engage and disengage with a locking member fixed to the center of the vehicle width direction of the vehicle floor, and that has a lockable member that is locked to the locking member when the seatback is in an upright position.

[0007] According to the present invention described in claim 1, when the seatback is in the upright position, the locked member of the inner locking device provided at the end of the seatback frame on the lower side of the seatback and on the inner side in the vehicle width direction is locked by the locking member. This locking member is fixed to the center of the vehicle floor in the vehicle width direction. Therefore, rotation of the seatback is restricted. In particular, because rotation of the seatback on the inner side in the vehicle width direction, i.e., on the side of the adjacent seat, is suppressed, even if cargo loaded in the luggage compartment collides with the back of the seatback due to sudden braking, a frontal collision, or the like, the seatback at the center of the vehicle rear seat in the vehicle width direction is suppressed from colliding forward with the vehicle.

[0008] The vehicle rear seat of the present invention described in claim 2 is the invention described in claim 1, wherein the locking member includes a lower wall portion fixed to the vehicle floor and a vertical wall portion erected from the lower wall portion toward the upper side of the vehicle and having a through hole formed therein, and the locked member is biased in a direction toward the vertical wall portion by a biasing portion and is a lock pin that is inserted into the through hole when the seat back is in the upright position, and further includes a cable having one end fixed to the lock pin and the other end configured to be pullable.

[0009] According to the present invention described in claim 2, when the other end of the cable is pulled, the lock pin fixed to one end of the cable comes out of the through hole, unlocking the inner locking device. This allows the seat back to rotate. Furthermore, because the lock pin is biased by the biasing portion in the direction toward the vertical wall portion, when the seat back returns to the upright position, the repulsive force of the biasing portion causes the lock pin to be inserted back into the through hole and locked again. This restricts rotation of the seat back.

[0010] The vehicle rear seat according to the present invention as set forth in claim 3 is the invention as set forth in claim 2, further comprising an outer locking device that is arranged at an upper portion of the seatback frame on the outer side in the vehicle width direction and that is configured to be able to engage and disengage with a side wall of the vehicle body, and an operating lever that is connected to the other end of the cable and that is configured to be able to operate to simultaneously release the lock of the locking member to the inner locking device and the lock of the outer locking device to the side wall of the vehicle body.

[0011] According to the present invention as set forth in claim 3, the outer locking device provided on the upper portion of the seatback frame on the outer side in the vehicle width direction is locked to the vehicle side wall in the upright position. This prevents the seatback from tipping forward on the outer side in the vehicle width direction during a cargo collision. Furthermore, the load during a cargo collision is transmitted from the outer locking device to the vehicle side wall and from the inner locking device to the vehicle floor via the locking member. Therefore, the collision load is distributed to the vehicle body via both the outer locking device and the inner locking device.

[0012] When the operating lever connected to the other end of the cable is operated, the inner locking device is unlocked from the locking member and the outer locking device is unlocked from the vehicle side wall at the same time, so that the two locks are released simultaneously by the operating lever. [Effects of the Invention]

[0013] As described above, the vehicle rear seat according to the first aspect of the present invention has the excellent effect of being able to prevent the central portion in the vehicle width direction from tipping forward in the event of a cargo collision.

[0014] The vehicle rear seat according to the present invention as set forth in claim 2 has the excellent effect of restricting the rotation of the seat back with a simple configuration and also being able to release the restriction.

[0015] The vehicle rear seat according to the present invention as set forth in claim 3 has the excellent effect of being able to distribute collision loads well to the vehicle body and being able to release two locks with a single operating lever. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view of a vehicle rear seat according to an embodiment of the present invention, as viewed from the right front side of the vehicle. [Figure 2] 2 is a front view showing the internal configuration of the vehicle rear seat shown in FIG. 1 at the center in the vehicle width direction. [Figure 3] 3 is an enlarged perspective view of a main part of the inner locking device shown in FIG. 2. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] A vehicle rear seat 10 according to one embodiment of the present invention will be described below with reference to Figures 1 to 3. Note that the arrows FR, UP, and RH shown as appropriate in each figure respectively indicate the front side, upper side, and right side in the left-right direction (width direction) of the vehicle rear seat 10. Furthermore, when the terms "front-rear," "up-down," and "left-right" are used in the following description unless otherwise specified, they refer to front-rear in the seat front-rear direction, up-down in the seat up-down direction, and left-right in the seat left-right direction (width direction), respectively.

[0018] (Overall configuration of the vehicle rear seat 10) As shown in FIG. 1, a vehicle rear seat 10 (hereinafter referred to as "rear seat 10") is a three-seater rear seat and includes a seat cushion 12 on which occupants sit, a seatback 14 that supports the backs of the occupants, and three headrests 16 that support the heads of the occupants. The rear seat 10 is divided 60:40 in the vehicle width direction into a right seatback 14R for two-seater use and a left seatback 14L for one-seater use. The rear seat 10 is a split-folding rear seat in which the right seatback 14R and the left seatback 14L can be folded forward separately. The rear seat 10 is located at the front of the vehicle in the luggage compartment. The seat belt (not shown) of the center seat of the rear seat 10 is designed to extend from the shoulder of the center seat.

[0019] (Outer locking device 18R, 18L) An outer locking device 18R is provided at an upper portion of the right seatback 14R on the outer side in the vehicle width direction, for restraining the right seatback 14R to a side wall of the vehicle body (not shown) in an upright position (the position shown in FIG. 1; hereinafter referred to as the "upright position"). Similarly, an outer locking device 18L is provided at the left seatback 14L, for restraining the left seatback 14L to a side wall of the vehicle body (not shown) in an upright position.

[0020] The outer locking device 18R is provided on the right side of the right seat back 14R and comprises a lock body 20 that engages with a striker (not shown) provided on the side wall of the vehicle body, a lever base 22 provided on the right shoulder of the right seat back 14R, and an operating lever 24 rotatably attached to the lever base 22.

[0021] When the operating lever 24 is rotated from the closed position to the open position, the lock body 20 is disengaged from the striker (not shown), and the outer locking device 18R is unlocked. At the same time, the inner locking device 28 (see FIG. 2), which will be described later, is also unlocked. This allows the right seatback 14R to be tilted forward onto the seat cushion 12. When the right seatback 14R is raised from the forward-tilted state to the upright position, the lock body 20 engages with the striker (not shown), and the right seatback 14R is again restrained in the upright position.

[0022] The left and right outer locking devices 18R, 18L are configured substantially symmetrically, so a detailed description of the left outer locking device 18L will be omitted. However, in the rear seat 10 according to this embodiment, an inner locking device 28, which will be described later, is provided only on the right seat back 14R and not on the left seat back 14L. Therefore, when the operating lever 24 of the left outer locking device 18L is rotated from the closed position to the open position, the outer locking device 18L is unlocked, and the left seat back 14L can be tilted forward onto the seat cushion 12.

[0023] 2, the right seatback 14R further includes a seatback frame 26 that forms the framework, and an inner locking device 28 that restricts rotation of the right seatback 14R toward the inside in the vehicle width direction. The seatback frame 26 includes a pipe frame 30 that is generally rectangular when viewed from the front of the seatback.

[0024] (Inner side locking device 28) Cargo (not shown) loaded in the luggage compartment is likely to collide with the center of the vehicle width direction of the rear seat 10. Therefore, in order to effectively prevent the seat back 14 of the rear seat 10 from tipping forward in the event of a cargo collision, the inner locking device 28 is provided on the right seat back 14R for two-seaters located in the center of the vehicle width direction, and is designed to restrict the rotation of the right seat back 14R.

[0025] (hinge bracket 32) The inner locking device 28 includes a hinge bracket 32 ​​fixed to the end of the pipe frame 30 below the seat back and on the inner side in the vehicle width direction. The hinge bracket 32 ​​includes a base portion 34 extending in the up-down direction and width direction of the seat back, and a frame portion 36 extending from the peripheral end of the base portion 34 toward the front side of the seat back. A through-hole (not shown) is formed in a left side portion 36A of the frame portion 36, through which a tip portion 38A of a lock pin 38 serving as a locked member (described later) is inserted.

[0026] (Hinge 40) A hinge 40 is provided between the right seat back 14R and the left seat back 14L. The hinge 40 includes a support member 42 as a locking member fixed to a vehicle body floor (not shown), and a movable member 46 supported on the support member 42 by a pivot pin 44 (see FIG. 3) so as to be rotatable relative to the support member 42. The pivot pin 44 extends with its axial direction coinciding with the seat width direction.

[0027] The support member 42 is formed in an approximately L-shaped plate shape when viewed from the front side of the vehicle, and is composed of a lower wall portion 48 fixed to the vehicle floor (not shown), and a vertical wall portion 50 erected from the right side of the lower wall portion 48 in the seat width direction toward the upper side of the vehicle.

[0028] 3, the movable member 46 is formed in a generally L-shaped plate shape and is arranged to overlap the right side of the vertical wall portion 50 of the support member 42. The movable member 46 includes a supported portion 46A through which the pivot pin 44 is inserted, and a fastening portion 46B arranged to overlap the surface of the base portion 34 of the hinge bracket 32 ​​on the rear side of the seat back and fastened to the base portion 34. In this way, the hinge bracket 32 ​​of the right seat back 14R is fastened to the movable member 46. This allows the hinge bracket 32, and therefore the right seat back 14R, to rotate about the pivot pin 44 as a rotation axis.

[0029] Furthermore, a through-hole 50A is formed in the center of the vertical wall portion 50 in the up-down and front-rear directions, penetrating in the thickness direction. A lock pin 38 (described later) is inserted into the through-hole 50A when the right seat back 14R is in the upright position, thereby restricting the rotation of the right seat back 14R. The through-hole 50A through which the lock pin 38 is inserted is located below the pivot pin 44.

[0030] (Lock pin 38) The inner-side locking device 28 includes a lock pin 38 that is engaged with the support member 42 of the hinge 40. The lock pin 38 includes a rod-shaped shaft portion 52 that extends in the seat width direction, and an annular stopper portion 54 that is formed at approximately the center of the shaft portion 52 in the axial direction so as to have a larger diameter than the shaft portion 52. When the right-side seat back 14R is in the upright position, a tip portion 38A of the lock pin 38 (the left end portion in the seat width direction) is inserted into a through-hole 50A in a vertical wall portion 50 of the support member 42 of the hinge 40.

[0031] (Control cable 56) 1, the right seat back 14R is provided with a control cable 56. The control cable 56 is arranged along the right side and lower end of the right seat back 14R in a substantially L-shape when viewed from the front of the seat.

[0032] 2 and 3, the control cable 56 includes an outer cover 58 and an inner cable 60 slidably inserted into the outer cover 58. The inner cable 60 in this embodiment corresponds to the cable in the present invention.

[0033] The outer cover 58 includes a tubular cover body 58A and a cylindrical terminal member 58B fixed to one end of the cover body 58A. A groove is formed in the outer periphery of the terminal member 58B along the circumferential direction.

[0034] One end of an inner cable 60 is pulled out from one end of the outer cover 58. One end of the inner cable 60 is fixed to the base end 38B of the lock pin 38. The other end (not shown) of the inner cable 60 is connected to the operating lever 24. By operating the operating lever 24, the inner cable 60 is pulled and the tip end 38A of the lock pin 38 is removed from the through-hole 50A of the hinge 40. In other words, by rotating the operating lever 24 from the closed position to the open position, the lock of the support member 42 of the hinge 40 to the lock pin 38 and the lock of the outer locking device 18R to the vehicle side wall can be simultaneously released.

[0035] (Pedestal 62) The inner-side locking device 28 further includes a pedestal 62 configured to be able to lock the lock pin 38 and the outer cover 58 of the control cable 56. The pedestal 62 is fastened to the lower part of the base portion 34 of the hinge bracket 32 ​​and to the front side of the seat back. The pedestal 62 includes a base portion 64 disposed on top of the base portion 34 of the hinge bracket 32, a right wall portion 66 extending from the right end of the base portion 34 toward the front of the seat, and a left wall portion 68 extending from the left end of the base portion 64 toward the front of the seat.

[0036] A locking groove 66A that opens toward the front side of the seat back is formed in the right wall portion 66. A groove formed in the terminal member 58B of the outer cover 58 of the control cable 56 is fitted into this locking groove 66A. This allows the outer cover 58 of the control cable 56 to be locked to the base 62.

[0037] 3, a through-hole 68A is formed in the left wall portion 68. The base end portion 38B (the right end portion in the seat width direction) of the lock pin 38 is inserted through the through-hole 68A in the left wall portion 68. The through-hole 68A of the base 62 of the lock pin 38, the through-hole (not shown) of the frame portion 36 of the hinge bracket 32, and the through-hole 50A of the support member 42 of the hinge 40 are arranged coaxially along the seat width direction. This allows the lock pin 38 to slide along the seat width direction.

[0038] (Compression coil spring 70) The inner-side locking device 28 further includes a compression coil spring 70 as a biasing member. The shaft portion 52 of the lock pin 38, which is on the right side of the stopper portion 54 in the seat width direction, is inserted into the compression coil spring 70, and the compression coil spring 70 is disposed between the stopper portion 54 of the lock pin 38 and the left wall portion 68 of the base 62. The lock pin 38 is biased by the compression coil spring 70 in a direction toward the vertical wall portion 50. As a result, when the right-side seatback 14R is raised from its forward-tilted state to its upright position, the repulsive force of the compression coil spring 70 causes the lock pin 38 to be inserted into the through-hole 50A, and the right-side seatback 14R is again restrained in the upright position.

[0039] (action) Next, the operation of this embodiment will be described.

[0040] In the vehicle rear seat 10 according to this embodiment, when the right seatback 14R is in the upright position, the lock pin 38 of the inner locking device 28, which is provided at the end of the seatback frame 26 on the lower side of the seatback and on the inner side in the vehicle width direction, is locked in the through-hole 50A of the vertical wall portion 50 of the support member 42. This support member 42 is fixed to the center portion of the vehicle body floor (not shown) in the vehicle width direction. Therefore, rotation of the right seatback 14R is restricted. In particular, because rotation of the right seatback 14R on the inner side in the vehicle width direction, i.e., the left seatback 14L (see FIG. 1 ) side, is restricted, even if cargo loaded in the luggage compartment collides with the back of the right seatback 14R due to sudden braking, a frontal collision, or the like, the right seatback 14R is prevented from collapsing forward in the vehicle width direction at the center portion of the vehicle rear seat 10.

[0041] Furthermore, in the vehicle rear seat 10 according to this embodiment, when the other end of the inner cable 60 is pulled, the lock pin 38 fixed to one end of the inner cable 60 comes out of the through-hole 50A, and the inner-side locking device 28 is unlocked. This allows the right-side seatback 14R to rotate. Furthermore, because the lock pin 38 is biased toward the vertical wall portion 50 by the compression coil spring 70, when the right-side seatback 14R returns to the upright position, the repulsive force of the compression coil spring 70 causes the lock pin 38 to be inserted again into the through-hole 50A and locked. This restricts the rotation of the right-side seatback 14R.

[0042] Furthermore, in the vehicle rear seat 10 according to this embodiment, as shown in FIG. 1, the outer locking device 18R, which is provided on the upper portion of the seatback frame 26 on the outer side in the vehicle width direction, is locked to a vehicle side wall (not shown) in the upright position. This prevents the right seatback 14R on the outer side in the vehicle width direction from tipping forward in the event of a cargo collision. In addition, the load generated in the event of a cargo collision is transmitted from the outer locking device 18R to the vehicle side wall, and then transmitted to the vehicle floor via the inner locking device 28 (shown in FIG. 2) and the support member 42 of the hinge 40. Therefore, the collision load is distributed to the vehicle body via the outer locking device 18R and the inner locking device 28 of the right seatback 14R.

[0043] When the operating lever 24 (see FIG. 1) connected to the other end of the inner cable 60 is rotated from the closed position to the open position, the lock pin 38 comes out of the through-hole 50A, releasing the inner locking device 28, and simultaneously releasing the lock of the outer locking device 18R shown in FIG. 1 against the vehicle body side wall. In other words, the operating lever 24 simultaneously releases two locks.

[0044] Furthermore, with the vehicle rear seat 10 according to this embodiment, the seat belt (not shown) for the center seat of the rear seat 10 is designed to come out from the shoulder of the center seat. In other words, during sudden vehicle deceleration or a frontal collision, the seat belt for the center seat is pulled toward the front of the seat, causing the right seatback 14R to tend to tilt toward the front of the seat. However, because the right seatback 14R is equipped with an inner locking device 28, it is possible to prevent the right seatback 14R from tilting forward. In other words, the vehicle rear seat 10 according to this embodiment also exhibits excellent effects in the center seat belt anchor test.

[0045] Furthermore, according to the vehicle rear seat 10 according to this embodiment, the outer cover 58 and the lock pin 38 are supported by the base 62, so that the lock pin 38 can slide straight and stably.

[0046] [Supplementary explanation of the above embodiment] In the above embodiment, the rear seat 10 is described as being divided 6:4 in the vehicle width direction into a two-seater right seat back 14R and a one-seater left seat back 14L, but this is not limited thereto. For example, the vehicle rear seat may be divided 4:6 in the vehicle width direction into a one-seater right seat back and a two-seater left seat back. The vehicle rear seat may also be divided 4:2:4 in the vehicle width direction. Furthermore, the vehicle rear seat may be a two-seater seat divided 5:5 in the vehicle width direction.

[0047] Furthermore, because cargo in the luggage compartment is likely to collide with the center of the rear seat 10 in the vehicle width direction, the above embodiment has been described as having the inner locking device 28 provided on the right seat back 14R for a two-seater vehicle located in the center of the vehicle width direction. However, this is not limited to this. For example, the inner locking device may be provided on a single-seater seat or on both the left and right seats. If an inner locking device is provided on each of the left and right seats, the forward tilting of both the left and right seat backs is suppressed. On the other hand, as described in the above embodiment, if an inner locking device is provided on only one of the left and right seats, providing the inner locking device on the seat located in the center of the vehicle width direction (for example, the seat on the sixth seat in a 4:6 split seat system) can effectively suppress the forward tilting of the seat back of the vehicle rear seat in the center of the vehicle width direction while reducing the number of parts.

[0048] Furthermore, in the above embodiment, the support member 42 as the locking member has been described as including the lower wall portion 48 and the vertical wall portion 50, but the shape of the locking member is not limited to this.

[0049] Furthermore, in the above embodiment, the inner-side locking device 28 is described as being locked by inserting the lock pin 38 into the through hole 50A, but the manner in which the locking member is locked to the locked member is not limited to this.

[0050] Furthermore, in the above embodiment, the lock pin 38 is described as being biased in the direction toward the vertical wall portion 50 by the compression coil spring 70, but this is not limited to this, and the locked member may be biased toward the vertical wall portion in other ways.

[0051] Furthermore, in the above embodiment, it has been described that the inner-side locking device 28 is unlocked by rotating the operating lever 24 from the closed position to the open position and pulling the inner cable 60, but the method of unlocking the inner-side locking device is not limited to this.

[0052] Furthermore, in the above embodiment, the inner locking device 28 and the outer locking device 18 are simultaneously released by the above operation of the operating lever 24. However, this is not limiting, and the inner locking device and the outer locking device may be released separately. Furthermore, the vehicle rear seat does not necessarily have to be equipped with an outer locking device.

[0053] In the above embodiment, the inner locking device 28 is described as including the hinge bracket 32, the lock pin 38, the base 62, and the compression coil spring 70, but is not limited thereto. For example, a side frame extending in the up-down direction of the seatback on the inner side of the seatback frame in the seat width direction may extend further below the seatback at the lower end of the seatback frame than the lower frame extending in the seat width direction, and the lower end of the side frame may be engaged with a locking member on the vehicle lower side of the vehicle floor. In this case, safety and design are improved compared to when the locking mechanism is provided on the vehicle upper side of the vehicle floor. [Explanation of symbols]

[0054] 10 Rear seat for vehicle 14R right seat back 18R outer locking device 24 Operating lever 26 Seat back frame 28 Inner locking device 38 Lock pin (locked member) 42 Support member (locking member) 48 Lower wall part 50 Vertical wall section 50A through hole 60 Inner cable

Claims

1. a seat back frame that is disposed in a luggage compartment of the vehicle at the front of the vehicle and on at least one side in a vehicle width direction, and that forms a framework of the seat back; an inner-side locking device provided at an end of the seat back frame on a lower side of the seat back and on an inner side in the vehicle width direction, configured to be engageable with and disengageable from a locking member fixed to a center portion of a vehicle body floor in the vehicle width direction, and including a locked member that is locked to the locking member when the seat back is in an upright position; A rear seat for a vehicle having:

2. the locking member includes a lower wall portion fixed to the vehicle body floor, and a vertical wall portion erected from the lower wall portion toward the upper side of the vehicle and having a through hole formed therein; the locked member is biased in a direction toward the vertical wall portion by a biasing portion, and is a lock pin that is inserted into the through hole when the seat back is in the upright position, The locking device further includes a cable having one end fixed to the locking pin and the other end configured to be pullable. The rear seat for a vehicle according to claim 1.

3. an outer locking device that is disposed on an upper portion of the seat back frame on an outer side in the vehicle width direction and is configured to be engageable with and disengageable from a side wall of the vehicle body; an operating lever connected to the other end of the cable and configured to be operable to simultaneously release the lock of the inner locking device to the locking member and the lock of the outer locking device to the vehicle body side wall, The rear seat for a vehicle according to claim 2.

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