JP4909563B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat that is slidably installed in a vehicle such as an automobile.

2. Description of the Related Art Conventionally, a vehicle seat that is installed in a vehicle such as an automobile is known that includes a slide mechanism that supports a seat body so as to be movable in the front-rear direction of the vehicle (see, for example, Patent Document 1).
This slide mechanism supports the seat body so that it can slide along a slide rail provided on the floor of the vehicle. The seat body is slid to a predetermined position by unlocking the seat body with respect to the slide rail. Be able to.

Japanese Patent Laid-Open No. 5-213101

  By the way, when the seat body is slidably provided on the slide rail as described above, a lock mechanism for locking the seat body to the left and right slide rails is provided in order to firmly lock the seat body to the slide rail. Has been done. In this case, an operation member capable of simultaneously unlocking the lock mechanisms on both sides is provided.

  On the other hand, when the passengers of the front and rear seats get on and off from the common door, it is necessary to bring the front seat forward and slide it forward to improve the passenger's ability to get on and off the rear seat. In order to improve the operability in such cases, there is a structure that allows the seat body to slide by unlocking the lock mechanism of the slide rail in conjunction with the forward movement of the seat back of the seat body. Is applied to a structure in which each of the left and right slide rails has a lock mechanism as described above, the left and right lock mechanisms must be unlocked with separate wires at the same time when the seat back is tilted forward. For this reason, it is necessary to accurately adjust the lengths of the left and right wires, and the adjustment is troublesome. Further, even if the adjustment is performed accurately at first, there is a possibility that the lengths of the left and right wires are shifted with time.

  The present invention provides a vehicle seat in which the left and right lock release wires are unlocked by the left and right lock release wires in conjunction with the forward movement of the seat back, and the length of the left and right lock release wires can be easily adjusted. It is an object.

  A vehicle seat according to the present invention capable of solving the above-mentioned problems is a seat body having a seat cushion on which an occupant is seated, a seat back supported on the rear end of the seat cushion so as to be able to move forward, and a floor surface. Left and right slide rails that are provided and slidably support the seat body in the front-rear direction, a right-side lock mechanism that locks the seat body to the slide rail on the right side, and locks the seat body to the slide rail on the left side. A left-side lock mechanism; a right-side unlock wire that unlocks the right-side lock mechanism by being pulled forward by the seatback; and a left-side side that is pulled by the front-back of the seatback and unlocks the left-side lock mechanism. A vehicle seat having a lock release wire, the right lock release wire and the left lock release At least one of the wires is characterized by being provided to be extendable.

  According to the vehicle seat configured as described above, since at least one of the right unlocking wire and the left unlocking wire is provided so as to be extendable / contractable, the extension / contraction causes an error in the adjustment length. Can be absorbed.

  Further, in the vehicle seat according to the present invention, the right rotation member that is rotated by being pulled by the right lock release wire, and the right rotation mechanism that is rotated in conjunction with the rotation of the right rotation member is locked. A right-side unlocking member that releases the left-side locking mechanism, a left-side turning member that is rotated by being pulled by the left-side unlocking wire, and a left-side turning mechanism that is rotated in conjunction with the turning of the left-side turning member to release the lock It is preferable to have a left unlocking member.

  According to this configuration, it is possible to simplify the configuration for releasing the left and right lock mechanisms with the left and right lock release wires in conjunction with the forward movement of the seat back.

  Furthermore, in the vehicle seat according to the present invention, it is preferable that the right unlocking wire and the left unlocking wire are connected to an operating member that rotates in contact with the seat back in front of the seat back. .

  According to this configuration, the left and right unlocking wires can be pulled simultaneously in conjunction with the forward movement of the seat back.

  According to the vehicle seat of the present invention, the length adjustment accuracy of the left and right unlocking wires for unlocking the left and right locking mechanisms in conjunction with the forward movement of the seat back can be made relatively gradual, so adjustment is easy. It becomes.

  Hereinafter, an example of an embodiment of a vehicular seat concerning the present invention is explained with reference to drawings.

  FIG. 1 is a view of the interior of a vehicle as viewed from the upper left side. As shown in FIG. 1, the vehicle 11 includes a right driver seat 12 and a left passenger seat 13 in the first row, a right seat 14 and a left seat 15 in the second row, and a right seat 16 in the third row. And a left seat 17 are provided. A right front door 18 is provided on the right side of the driver's seat 12, a left front door (not shown) is provided on the left side of the passenger seat 13, and a right side of the right seat 14 in the second row is provided on the right side. A right rear door 19 is provided on the left side of the left side seat 15 in the second row, and a left rear door (not shown) is provided. For example, by opening the right rear door 19, an occupant can get on and off the second row right seat 14 and the third row right seat 16. In addition, in order to improve such a boarding / exiting property to the right seat 16 in the third row, the right seat 14 in the second row can be moved forward and can be slid forward in conjunction with the forward movement.

  The vehicle seat according to the present embodiment is applied to the right-side seat 14 in the second row described above.

  As shown in FIGS. 2 to 5, the seat 14 includes a seat body 27 having a seat cushion 25 arranged substantially horizontally and a seat back 26 supported at the rear end of the seat cushion 25 so as to be able to be moved forward. It has a right slide rail 30R and a left slide rail 30L that are provided in parallel to each other on the vehicle body floor (floor surface) 28 and support the seat body 27 so as to be slidable in the front-rear direction. Here, in FIG. 2 to FIG. 5, for convenience of explanation, only the main part of the frame of the seat body 27 is illustrated. 4 and 5 show the seat back omitted.

  The right slide rail 30R includes a lower rail 32R that is fixed to the vehicle body floor 28 in a state of extending in the vehicle longitudinal direction, and an upper rail 33R that is supported by the lower rail 32R so as to be slidable forward and backward. 30L also has the same lower rail 32L and upper rail 33L.

  As shown in FIG. 4, the lower rail 32R has a large number of lock pieces 35R projecting downward at equal intervals in the front-rear direction, and the upper rail 33R can be engaged with each lock piece 35R. A lock member 37R having a lock hole 36R penetrating in the vertical direction is rotatably supported by a front rotation shaft 38R.

  Similarly, as shown in FIG. 5, a plurality of lock pieces 35L are arranged on the lower rail 32L, and a lock member 37L having a lock hole 36L is formed on the upper rail 33L by a rotation shaft 38L. It is rotatably supported.

  The lock member 37R is urged by a spring (not shown) in a direction to raise the lock hole 36R, and the upper rail 33R is moved to the lower rail by engaging the lock hole 36R with the lock piece 35R by the urging force of the spring. Lock to 32R so that it cannot slide. On the other hand, when the lock member 37R is rotated downward against the biasing force of the spring, the lock hole portion 36R is removed from the lock piece portion 35R, and as a result, the upper rail 33R can be slid with respect to the lower rail 32R. An insertion hole 40R is formed in the upper plate portion 39R of the upper rail 33R at a position substantially vertically above the lock hole portion 36R of the lock member 37R.

  Similarly to the above, the lock member 37L engages the lock hole portion 36L with the lock piece portion 35L by a biasing force of a spring (not shown) to lock the upper rail 33L with respect to the lower rail 32L so that it cannot slide. When it is rotated downward against the force, the lock hole 36L is removed from the lock piece 35L, and the upper rail 33L is slidable with respect to the lower rail 32L. Note that an insertion hole 40L similar to the above is also formed in the upper plate portion 39L of the upper rail 33L.

  Here, since the seat body 27 is fixed to the upper plate portions 39R, 39L of the upper rails 33R, 33L of the right and left slide rails 30R, 30L, the lock piece portion provided on the right slide rail 30R. The 35R and the lock member 37R constitute a right lock mechanism (right lock mechanism) 42R that locks the seat body 27 to the right slide rail 30R so that the seat body 27 cannot slide, and a lock piece provided on the left slide rail 30L. The portion 35L and the lock member 37L constitute a left lock mechanism (left lock mechanism) 42L that locks the seat body 27 to the left slide rail 30L so that the seat body 27 cannot slide.

  The seat frame 45 of the seat cushion 25 of the seat main body 27 protrudes upward to the upper part of the rear end of the base frame member 46R and a substantially L-shaped base frame member 46R fixed to the upper rail 33R of the right slide rail 30R. The frame member 47R fixed to the upper side, the substantially L-shaped base frame member 46L fixed to the upper rail 33L of the left slide rail 30L, and the upper part of the rear end of the base frame member 46L so as to protrude upward And a frame member 47L fixed to the frame.

  A seat frame 50 of the seat back 26 of the seat body 27 is rotatably connected to the left and right frame members 47R and 47L. The seat frame 50 includes a frame member 52R that is rotatably supported by the rotation shaft 51R of the right frame member 47R, and a frame member 52L that is rotatably supported by the rotation shaft 51L of the left frame member 47L. The rotation shafts 51R and 51L are arranged coaxially. The right frame member 47R and the frame member 52R are provided with a reclining mechanism 54 that can adjust these angles, that is, the angle between the seat cushion 25 and the seat back 26.

  The reclining mechanism 54 is connected to a side lever 55 rotatably supported on the upper part of the frame member 52R via a cable 56, and is supported rotatably on the upper end of the frame member 52R. The upper lever (not shown) is connected via a cable 58. In addition, the left frame member 47L and the frame member 52L are provided with springs 59 that urge the upper frame member 52L, that is, the seat back 26 in the forward and backward direction.

  For example, when the side lever 55 is operated, the reclining mechanism 54 is unlocked via the cable 56, and the seat back 26 is moved forward by the urging force of the spring 59. The reclining mechanism 54 is provided with an actuating member 62 that is brought into contact with the pressing member 61 of the frame member 52R that rotates integrally with the seat back 26 when the seat back 26 is moved forward.

  The base frame member 46R on the right side of the seat frame 45 of the seat cushion 25 is provided with an unlocking member 66R that is rotatable about a rotation shaft 65R on the front side thereof. In addition, an unlocking member 66L is provided so as to be rotatable about a rotation shaft 65L on the front side thereof. The rotation shafts 65R and 65L are arranged coaxially.

  The unlocking member 66R is attached in a direction in which the front part is moved downward by the urging force of the tension spring 67R interposed between the upper part slightly behind the rotating shaft 65R and the right base frame member 46R. And is stopped at a predetermined position. The unlocking member 66L is also attached in the direction in which the front part is moved downward by the urging force of the tension spring 67L interposed between the upper part slightly behind the rotation shaft 65L and the left base frame member 46L. And is stopped at a predetermined position.

  These unlocking members 66R and 66L are connected to each other by a towel bar 68 at front portions extending forward from the rotation shafts 65R and 65L. The towel bar 68 is connected to the right unlocking member 66R at the connecting portion 71R and extends forward, and the towel bar 68 is connected to the left unlocking member 66L at the connecting portion 71L and extends forward. A front extending rod portion 69L, and an operation rod portion 70 that connects the front end portions of the front extending rod portions 69R and 69L in the vehicle width direction.

  Here, the towel bar 68 has a connecting portion 71L fixed to the left unlocking member 66L, but the connecting portion 71R is connected to the right unlocking member 66R via the rotation shaft 72. And are pivotally connected. The left and right unlocking members 66R and 66L are in the normal position where the operation bar portion 70 of the towel bar 68 is positioned downward by the urging force of the tension springs 67R and 67L, and the towel bar 68 is moved to the right side. The upward rotation of the lock release member 66 </ b> R is restricted by coming into contact with the stopper 73 formed on the lock release member 66 </ b> R from the upper side at the contact portion 74 on the rear side of the rotation shaft 72.

  That is, when an upper force is applied to the operation rod portion 70 from the normal position, the towel bar 68 and the right unlocking member 66R move integrally. On the other hand, when a force is applied downward to the operation bar portion 70 from the normal position, the connecting portion 71R of the towel bar 68 is structurally opposite to the lock release member 66R on the right side. Thus, it is possible to rotate around the rotation shaft 72 so as to move the operation rod portion 70 downward.

  The towel bar 68 has a structure that can be displaced downward from the normal position in the connecting portion 71R to the lock release member 66R on the right side, but the towel bar 68 is fixed to the lock release member 66L on the left side. Therefore, the rotation is restricted by the lock release member 66L on the left side so that such rotation is not possible. Therefore, normally, the towel bar 68 and the left and right lock release members 66R and 66L always operate integrally.

  The lower extension portion 77R on the rear end side that extends rearward from the rotation shaft 65R of the right lock release member 66R is provided with a lock release portion 78R that protrudes downward. When the unlocking member 66R is rotated so that the rear part is positioned on the lower side, the unlocking part 78R enters the insertion hole 40R of the upper rail 33R of the right slide rail 30R, and moves the locking member 37R of the right locking mechanism 42R. Push down to unlock.

  An unlocking portion 78L that protrudes downward is also provided in a lower extension portion 77L on the rear end side that extends rearward from the rotation shaft 65L of the left unlocking member 66L. The unlocking portion 78L also enters the insertion hole 40L of the upper rail 33L of the left slide rail 30L when the unlocking member 66L is rotated so that the rear portion is positioned downward, and the locking member 37L of the left locking mechanism 42L is inserted. Push down to unlock.

  The right unlocking member 66R is urged so that the towel bar 68 is positioned on the lower side and the unlocking portion 78R is positioned on the upper side by the tension spring 67R interposed between the base frame member 46R and the right side. The rotation from the normal position is restricted.

  The unlocking member 66L on the left side is also urged so that the towel bar 68 is positioned on the lower side and the unlocking part 78L is positioned on the upper side by the tension spring 67L interposed between the lock release member 66L and the base frame member 46L. The rotation from the normal position is restricted.

  As a result, when the operation bar portion 70 of the towel bar 68 is lifted, the left unlocking member 66L fixed to the towel bar 68 against the urging force of the tension springs 67R and 67L is moved around the rotation shaft 65L. 68, and the stopper 73 is also in contact with the contact portion 74 of the towel bar 68 so that the right side unlocking member 66L is rotatably connected to the towel bar 68. It will rotate together. As a result, the unlocking portions 78R and 78L of the right and left unlocking members 66R and 66L are simultaneously lowered to simultaneously unlock the right and left locking mechanisms 42R and 42L. Thereby, the seat body 27 can slide in the front-rear direction.

  When the lifting of the towel bar 68 is released after the seat body 27 is slid to an appropriate position, the right and left unlocking members 66R and 66L are rotated by the urging force of the tension springs 67R and 67L to return to the original positions. As a result, the operation bar portion 70 of the towel bar 68 is lowered, and the right and left unlocking portions 78R and 78L are simultaneously raised to simultaneously lock the right and left lock mechanisms 42R and 42L. Thereby, the seat body 27 is locked so as not to slide in the front-rear direction.

  A pin 80R is fixed to the upper extension 79R on the rear end side that extends rearward from the rotation shaft 65R of the right unlocking member 66R, and the unlocking member 66R is fixed to the right base frame member 46R. Further, a rotation member (right rotation member) 84R is provided so as to be rotatable around a rotation shaft 83R on the rear side. The rotating member 84R is in contact with the pin 80R of the unlocking member 66R from above by an extending portion 85R extending forward from the rotating shaft 83R.

  A cable 88R is connected between the extending portion 86R extending downward from the rotating shaft 83R of the rotating member 84R and the operating member 62 of the reclining mechanism 54. The cable 88R has an outer tube 89R and a wire (right unlocking wire) 90R inserted into the outer tube 89R. One end of the wire 90R is connected to the lower portion of the operating member 62 and the other end is connected. The outer tube 89R is connected to the right base frame member 46R via a bracket 91R, and the other end is connected to the right frame member 47R. It is locked via a bracket 92.

  A pin 80L is fixed to the upper extension 79L on the rear end side that extends rearward from the rotation shaft 65L of the left unlocking member 66L, and the unlocking member 66L is fixed to the left base frame member 46L. A rotation member (left rotation member) 84L is provided so as to be rotatable around a rotation shaft 83L on the rear side. The rotating member 84L is in contact with the pin 80L of the unlocking member 66L from above by an extending portion 85L extending forward from the rotating shaft 83L.

  A cable 88L is connected between the extending portion 86L of the rotating member 84L that extends downward from the rotating shaft 83L and the operating member 62 of the reclining mechanism 54. This cable 88L has an outer tube 89L, a wire (left unlocking wire) 90L inserted into the outer tube 89L, and a tension spring 94 connected to the wire 90L, and one end of the wire 90L operates. The other end portion is connected to the extending portion 86L of the rotating member 84L via the tension spring 94 while being connected to the lower portion of the member 62. Further, one end of the outer tube 89L is locked to the left base frame member 46L via a bracket 91L, and the other end is locked to the right frame member 47R via a bracket 92. Note that the wire 90 </ b> L is extendable and retractable by the tension spring 94 described above.

  When the side lever 55 is operated, the reclining mechanism 54 is unlocked via the cable 56, and the seat back 26 is moved forward by the urging force of the spring 59. Then, the operating member 62 provided in the reclining mechanism 54 comes into contact with the pressing member 61 of the seat back 26 and is pressed and rotated. Then, both the wires 90R and 90L having one end connected to the operating member 62 are pulled simultaneously.

  As a result, the turning member 84R connected to the other end of the one wire 90R is rotated so that the extending portion 85R is moved downward by pulling the extending portion 86R, and the rotating member 84R is interlocked with this. The lock release member 66R is rotated via the pin 80R, and the rotation member 84L connected to the other end side of the other wire 90L via the tension spring 94 is extended by the extension portion 86L being pulled. The portion 85L is rotated so as to move downward, and the lock release member 66L is rotated via the pin 80L in conjunction with the rotation.

  With these rotations of the right and left lock release members 66R and 66L, the lock release portions 78R and 78L are lowered substantially simultaneously to release the locks of the right and left lock mechanisms 42R and 42L substantially simultaneously. That is, the wires 90R and 90L are both pulled forward by the seat back 26 of the seat body 27, and the lock mechanisms 42R and 42L are unlocked. As a result, the seat body 27 is slidable back and forth, and automatically slides forward by a biasing force of a spring (not shown). Therefore, a large passage for getting on and off the passengers in the third row of seats 16 and 17, that is, a walk-in passage can be secured.

  On the other hand, when the seat back 26 is rotated and raised, the actuating member 62 pressed by the pressing member 61 of the seat back 26 is released so that the pressing force of a spring (not shown) is the same as that of the seat back 26. Rotate in the direction. Then, both wires 90R and 90L, one end of which is connected to the operating member 62, are fed out to the rotating members 84R and 84L.

  Thereby, the rotating member 84R connected to the other end of the one wire 90R is rotated so that the extending portion 86R is moved upward when the extending portion 86R is pushed, and the pin 80R is moved to this. The abutting lock release member 66R is rotated by the urging force of the tension spring 67R so as to raise the pin 80R, and the rotation member 84L connected to the other end side of the other wire 90L via the spring 94. When the extension portion 86L is pushed, the extension portion 85L is rotated so as to move upward, and the lock release member 66L with which the pin 80L is abutted is lifted so that the pin 80L is raised. It is rotated with an urging force of 67L.

  By these rotations of the right and left unlocking members 66R and 66L, the unlocking portions 78R and 78L are lifted substantially simultaneously to bring the right and left locking mechanisms 42R and 42L into a locked state substantially simultaneously. As a result, the seat body 27 is locked so as not to slide.

  As described above, according to the vehicle seat according to the above-described embodiment, the left unlocking wire 90 </ b> L is provided so as to be extendable / contractible by the spring 94. An error in the adjustment length of the wires 90R and 90L can be absorbed. It should be noted that at least one of the right unlocking wire 90R and the left unlocking wire 90L only needs to be extendable, and the wire itself has elasticity without providing the spring 94. May be allowed.

  Further, a rotating member 84R that is rotated by being pulled by the wire 90R, an unlocking member 66R that is rotated in conjunction with the rotation of the rotating member 84R and unlocks the right lock mechanism 42R, and a wire 90L. A rotation member 84L that is pulled and rotated, and a lock release member 66L that is rotated in conjunction with the rotation of the rotation member 84L and unlocks the lock mechanism 42L on the left side. The configuration for unlocking the left and right lock mechanisms 42R and 42L with the left and right wires 90R and 90L in conjunction with the forward movement of the seat back 26 can be simplified.

  Further, since the wires 90R and 90L are connected to the actuating member 62 that rotates in contact with the pressing member 61 of the seat back 26 when the seat back 26 is moved forward, the right and left are interlocked with the forward movement of the seat back 26. The wires 90R and 90L can be pulled simultaneously.

In addition, although the said embodiment demonstrated as an example the case where this invention was applied to the seat of a motor vehicle, the vehicle seat of this invention is applicable not only to the seat of a motor vehicle but to the seat of various vehicles.
In addition, the vehicle seat of the present invention is not limited to the number of seats arranged in three rows in the front-rear direction.

1 is a perspective view of a vehicle interior of a vehicle to which a vehicle seat according to an embodiment of the present invention is applied. It is the perspective view seen from diagonally right front which shows the vehicle seat which concerns on one Embodiment of this invention. It is the perspective view seen from diagonally left front which shows the vehicle seat which concerns on one Embodiment of this invention. It is the side view which looked at the right side part of the vehicular seat concerning one embodiment of the present invention from the left side. It is the side view which looked at the left side part of the vehicle seat which concerns on one Embodiment of this invention from the right side.

Explanation of symbols

14 Right seat (vehicle seat)
25 Seat cushion 26 Seat back 27 Seat body 28 Body floor (floor surface)
30R, 30L Slide rail 42R Lock mechanism (right side lock mechanism)
42L Lock mechanism (Left side lock mechanism)
62 Actuating member 66R Unlocking member (Right-side unlocking member)
66L unlocking member (left unlocking member)
84R Rotating member (Right-hand rotating member)
84L Rotating member (Left side rotating member)
90R wire (right unlocking wire)
90L wire (left unlocking wire)

Claims (2)

A seat body having a seat cushion on which an occupant is seated and a seat back supported on the rear end of the seat cushion so as to be able to move forward;
Left and right slide rails provided on the floor surface to support the seat body slidable in the front-rear direction;
A right side locking mechanism that locks the seat body to the right slide rail;
A left side locking mechanism that locks the seat body to the left slide rail;
Sometimes the forward tilting of the seat back, and the actuating member is pivoted to the seat back pivot axis around in contact with the frame member of the seat back,
A right-side unlock wire that is connected at one end to the actuating member and is pulled by the rotation of the actuating member to unlock the right-side lock mechanism;
A left-side unlock wire that has one end connected to the actuating member and is pulled by rotation of the actuating member to unlock the left-side locking mechanism ;
A vehicle seat having a lock release member that operates locking and unlocking of the right side lock mechanism and the left side lock mechanism ,
At least one of the right unlocking wire and the left unlocking wire is provided to be extendable and retractable so as to absorb an error in the adjustment length of the right unlocking wire and the left unlocking wire. A vehicle seat characterized by the above. The vehicle seat according to claim 1,
A right rotation member that is rotated by being pulled by the right unlocking wire;
A right-side unlock member that rotates in conjunction with the rotation of the right-side rotation member and releases the lock of the right-side lock mechanism;
A left-side rotating member that is pulled and rotated by the left-side unlock wire;
A vehicle seat comprising: a left-side lock release member that rotates in conjunction with the rotation of the left-side rotation member and releases the lock of the left-side lock mechanism.

Images