JP2005271739A - Vehicle seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower a seat back of a vehicle seat forward, move the seat forward in that state, and return the seat to its original position after the walk-in, but it is inconvenient to get on and off the passenger seat during the walk-in.
A memory runner (7) disposed on one rail is in contact with a first link (10), and is held in a predetermined position even when subjected to an urging force of a first spring (33). If the memory lock (9) is engaged with the hole (8) of the memory rail (3) even if the first spring (33) is separated from the memory runner (7), the memory runner (7) is in the same position. Is retained. The link mechanism (36) is arranged on the other rail (34, 35), and the rail unlocked state is maintained even when the seat back (31) is returned when the seat (30) is in front, and the ninth link (40) When it rides on the bracket (41), the rail is locked.
[Selection] Figure 1

Description

  The present invention relates to a seat slide device that allows a front seat (front seat) to move forward in order to make it easier for passengers to get on and off (walk in) a rear seat (rear seat) of a vehicle.

  To facilitate getting on and off the vehicle's rear seats (walk-in), the seat back of the front (front) seat is moved forward to release the slide lock on the lower rail that fixes the upper rail that holds the seat to the floor, and the seat is moved forward Is known. It is also known to provide a memory runner for storing the original position of the seat and returning the seat to the original position after getting on and off.

After the passenger gets on and off, when the seat is returned to the stored original position, that is, the position of the memory runner locked (locked) on the lower rail side, and the seat back is brought forward, the slide lock state is established. Of course, it is possible to lock the seat at a position in front of the memory runner, and in this case, the memory runner left in the subsequent normal operation is returned.
By the way, when one of the front seats using this type of seat slide device has moved forward for walk-in, the passengers get into the other front seat (mainly the passenger seat). I can't.

JP-A-8-253064 Japanese Patent Laid-Open No. 11-321393

  When the seat back is caused in front of the memory runner, the seat is in a slide lock state. In such a state, a sufficient space for getting on and off is not secured in front of the seat. For this reason, it is necessary to release the slide lock state of the seat by the operation handle and move the seat to a predetermined position where the seat can be taken on and off. This is inconvenient.

  Therefore, this invention makes it the subject which should be solved to eliminate the malfunction of the prior art mentioned above.

  In order to solve the above-described problems, the present invention provides a link mechanism in which a memory mechanism and a lock / unlock mechanism are arranged on one rail of a pair of rails and the operation of the lock / unlock mechanism is prevented on the other rail. Adopt technical means to provide. As a result, regardless of the seat with the memory mechanism, when the seat is moved forward from the rear position of the rail and the seat back is caused at the front position, the seat can be retracted to the center of the rail with the lock released. Yes, when the seat is advanced for walk-in from the center of the rail or from the front thereof, the seat can be retracted to the center of the rail while being unlocked.

  According to the present invention, in a vehicle seat slide device that releases or locks the movable rail that supports the seat by moving the operation handle or interlocking with the forward movement of the seat back, the seat back is moved forward. After the seat is moved forward, the link mechanism of the other rail inactivates the locking mechanism of one rail regardless of the state of the seat back at the forward position, and the seat can be moved backward. A seat slide device is provided.

  Preferably, an eighth link in which the link mechanism is held on the movable rail side of the other rail, and a ninth link that is held on the movable rail side and cooperates with the eighth link, one end of which is detachable from the bracket. The end of the ninth link and the bracket are disengaged by the advance of the seat.

  More preferably, the bracket is located rearward from the center of the fixed rail of the other rail.

  The present invention relates to a pair of lower rails fixed to a floor of a vehicle, an upper rail that is slidably arranged with respect to each lower rail and supports a seat, a memory mechanism that is arranged on one lower rail, A mechanism that locks and unlocks the upper rail to the lower rail, a memory mechanism that operates when the seat back is tilted forward, an operating mechanism that connects with the seat back to operate the lock and unlock mechanism, and the other upper rail And a link mechanism that selectively prevents the operation of the lock / unlock mechanism, and a rod mechanism that couples the link mechanism and the lock / unlock mechanism. After moving forward and moving forward, the link mechanism Lock operation of the lock-unlock mechanism is prevented, to provide a seat slide apparatus for a vehicle that enables the backward movement of the seat back.

  Furthermore, the present invention includes a memory runner that is slidably disposed in the longitudinal direction on one fixed rail side, and a frame that is fixed to one movable rail side and pivotally supports the operating link and the lock link. One end of the lock link cooperates with the operation handle that engages and disengages both rails, and the other end cooperates with the operation link that interlocks with the forward and backward movement of the seat back. The supported memory lock is engaged with and disengaged from the fixed rail, and the memory runner is connected to a spring that is biased in one direction and can be contacted with the contact link pivotally supported by the frame. It is held on the movable rail side by a link and spring, and fixed when the memory runner is locked to the memory rail placed on the fixed rail And a slave link disposed on the other movable rail and selectively blocking the operation of the lock link, and a rod connecting the lock link and the slave link, Provided is a vehicle seat slide device characterized in that when a seat back is raised when positioned forward, a secondary lock prevents movement of a lock link and can move rearward in a state in which the seat back is raised.

  In addition, the present invention provides one lower rail fixed to the floor of a vehicle, one upper rail slidable with respect to one lower rail, and a plurality of holes for seat position memory. A memory runner that has a memory rail that is fixed and a memory lock that receives the urging force of the elastic means, and that is slidable in the longitudinal direction with respect to the memory rail, and is locked and unlocked with respect to one upper rail and one lower rail And a frame fixed to one upper rail, the memory runner receives an input to the front of the first spring locked to the memory rail and the memory runner, and the frame is The first link that can contact the memory runner is pivotally supported, and it is further rotated in one direction when the seat back is moved forward. The second and third links are pivotally supported via a fifth pin, the third link has a long hole through which the first pin and the fifth pin pass, and the frame has an action part that contacts the operation handle at one end and the other. A fourth link having a portion that comes into contact with the first pin at the end is pivotally supported via a rod, a sixth link that can freely contact the memory lock is pivotally supported, and a frame is fixed to the fourth link. A fifth link having a portion abutting against the two pins is pivotally provided; a seventh link having a slot for receiving the third pin of the second link at one end and the other end pivotally supported by the fifth link; The other lower rail fixed to the floor of the vehicle, the upper rail slidable with respect to the other lower rail, the bracket fixed to the lower rail, and the eighth and ninth links supported by the frame fixed to the upper rail, And one end of the eighth link The ninth link is fixed to a rod coupled to the fourth link, and the other end is freely contactable with the operation handle, the movement of the ninth link is controlled by the eighth link, and one end of the ninth link is detachable from the bracket. Provided is a vehicle seat slide device that prevents locking of an upper rail to a lower rail due to the occurrence of a seat back when one end of a link is separated from a bracket.

In the present invention, a sufficient space for getting on and off can be secured in front of the seat, regardless of whether or not the seat back is caused in front of the memory runner. For this reason, it is not necessary to release the slide lock state of the seat with the operation handle, and the seat can be moved to a predetermined position where the passenger can get on and off. This is convenient.
In the present invention, even if the memory runner is left and the seat back is caused in front of the memory runner and then the seat is moved backward by a normal operation, the seat remains at the center of the rail and the memory lock is not broken. Further, there is no misalignment of the memory runner due to vehicle vibration, and there is no malfunction of the memory position.

Since the links from the second to the seventh links are arranged along the frame and the seventh link is arranged on the outer side and in the longitudinal direction of the frame, the components between them are protected from external force.
Since the memory runner can be held on the fixed rail by the memory lock, the memory runner can be reliably left in the storage position.
According to the present invention, since the seat moved forward for walk-in can be stopped at the center of the rail, it is easy for passengers to get on and off one front seat (for example, passenger seat) during walk-in.

As shown in FIGS. 1 and 2, the vehicle seat slide device 1 is slidable with respect to one lower rail 2 fixed to the vehicle floor, a memory rail 3 fixed to one lower rail 2, and the lower rail 2. The upper rail 4 has an L-shaped frame 5 fixed to the top surface of the upper rail 4.
A guide shaft 6 supported by the memory rail 3 is provided, and a memory runner 7 is inserted into the memory rail 3 and the guide shaft 6 so as to be movable in the front-rear direction.

The memory runner 7 has a memory lock 9 that can be engaged with a plurality of holes 8 formed in the memory rail 3 and that receives a biasing force of a spring.
The memory runner 7 is in contact with the tip end portion of the first link 10 rotatably supported on the outer wall portion of the frame 5 and has a first spring 33 with one end locked to the tip edge of the memory rail 3. Is received and held in front.

A second link 11 and a third link 12 spaced from the second link 11 and along the rising wall portion of the frame 5 are arranged at the rear end of the frame 5. The third link 12 has a long hole 13, the second link 11 is rotatably coupled to the third link 12 via a fourth pin 14, and a fifth pin 15 pivotally supported by the frame 5 is provided. It penetrates the long hole 13 and is pivotally supported by the second link 11.
A fourth link 17 is disposed which is pivotally supported by the frame 5 and whose movement is transmitted to the seat slide device (not shown) of the opposite rail via rods 16 and 16 '. The fourth link 17 that receives the urging force of the spring has an action portion 19 that abuts against the operation handle 18 at the tip thereof.

The fifth link 21 is pivotally supported on the frame 5 using the sixth pin 20. The fifth link 21 has two steps 22. A sixth link 23 that can freely contact the memory lock 9 is pivotally supported by the rod 16. An elongated seventh link 24 is supported by a third pin 26 pivotally supported by the second link 11 through the long hole 25 and a seventh pin 27 at the front end of the fifth link 21.
The fourth link 17 has a second pin 28, and the third link 12 has a first pin 29.

With reference to FIG. 3 and FIG. 4, another lower rail 34 and a link mechanism 36 attached to an upper rail 35 slidable with respect to the lower rail 34 will be described.
The link mechanism 36 includes an L-shaped frame 37 that is fixed to the top surface of the upper rail 35, an eighth link 38 that is fixed to one end of the rod 16 ′ and is rotatably supported by the frame 37, The frame 37 has a ninth link 40 as a secondary link that is rotatably supported using a pin 39, and a bracket 41 that extends from the center to the rear inside the lower rail 34.
The ninth link 40 is urged by the spring 42 so that the abutting piece 43 at one end thereof elastically abuts against the top surface of the bracket 41. The eighth link 38 includes a pin 44, and the pin 44 abuts on the step portions 45 and 45 ′ of the ninth link 40 to restrict the rotation angle of the ninth link 40.

As shown in FIG. 4, the frame 37 has a cam hole 46 ′ having a substantially L shape in front view through which the pin 44 passes. Thus, the movement of the eighth link 38 following the rotation of the rod 16 'interlocked with the fourth link 17 is guided by the cam hole 46', and the range of the movement is restricted.
The step portions 45 and 45 ′ of the ninth link 40 can freely come into contact with the pin 44, but the side surface connecting the step portions 45 and 45 ′ has a shape that follows the locus of movement of the pin 44.

The abutting piece 46 at one end of the eighth link 38 can freely enter and exit from the opening 47 on the top surface of the upper rail 35, abuts on the operation handle 18, and moves to a position for locking and unlocking the rail of the operation handle 18. Control movement.
When the upper rail 35 moves forward and the contact piece 43 of the ninth link 40 moves away from the top surface of the bracket 41, it rotates counterclockwise (as viewed in FIG. 3) about the pin 39, It is regulated by contact with the step portions 45 and 45 ′.

The forward movement of the seat 30 and the return of the seat 30 for walk-in will be described with reference to FIGS.
The seat back 31 is moved forward on the seat cushion 32 before the seat 30 located at the rear for the walk-in is moved forward. Next, the seat 30 is moved forward.

After the passenger walk-in to the rear seat is completed, the seat 30 can be returned to the original position as shown in FIG. In the example of the return pattern of the seat 30 shown in FIG. 6, the seat 30 that has been moved forward is returned to the original position at the rear while the seat back 31 is in the forward-tilted state. Next, the seat back 31 is returned.
Another example of the return pattern of the seat 30 shown in FIG. 7 is to return the seat back 31 of the seat 30 that has moved forward and to return the seat 30 to the rear with the seat back 31 raised. In this case, the seat 30 is stopped at the center portion of the rail, and then the operation handle 18 is operated to move the seat 30 rearward as required by a normal operation.

A mechanism for the forward movement of the seat 30 for the occupant's walk-in to the rear seat corresponding to FIG. 5 will be described with reference to FIGS. 8 to 10.
Note that, in response to the forward tilt of the seat back 31, the second link 11 rotates about the fifth pin 15 in the direction of arrow A (see FIG. 2). The downward movement of the handle 18 (see FIG. 2) due to the movement of the second link 11 (which enables the upper rail 4 to slide with respect to the lower rail 2) springs the fourth link 17 counterclockwise around the rod 16. It is rotated by the urging force. That is, the action portion 19 follows the movement of the operation handle 18. As described above, there are two types of input to the seat slide device 1, that is, input to the second link 11 by moving the seat back 31 forward and input to the fourth link 17 by movement of the operation handle 18. The operation handle 18 is used for a locking / unlocking device (not shown) that fixes or slides the upper rail 4 to the lower rail 2.

  Further, the memory runner 7 is slidable along the guide shaft 6 and the memory rail 3 under the urging force of the first spring 33, but the memory lock 9 is engaged with the hole 8 of the memory rail 3. When the first link 10 is in contact with the memory runner 7, the memory runner 7 does not slide.

In the normal state shown in FIG. 8, the memory runner 7 that receives the bias of the first spring 33 contacts the first link 10 and the memory lock 9 is released from the hole 8. Is retained.
When the lock of the upper rail 4 with respect to the lower rail 2 is released by the operation handle 18, the frame 5 moves together with the upper rail 4, so that the first link 10 moves together with the frame 5, and the memory runner 7 also It slides on the memory rail 3 while following the one link 10.

When the seat back 31 is tilted forward, as shown in FIG. 9, the second link 11 is pulled in the direction of arrow A and rotates clockwise about the fifth pin 15. Since the third link 12 is rotatably coupled to the second link 11, the third link 12 also rotates clockwise around the fifth pin 15, and the first pin 29 moves the rear end of the fourth link 17. lift.
In the counterclockwise rotation around the rod 16 of the fourth link 17, the operating unit 19 pushes down the operation handle 18. The downward movement of the operating handle 18 unlocks the upper rail 4 with respect to the lower rail 2 and allows the upper rail 4 to slide with respect to the lower rail 2.
When the fourth link 17 is rotated counterclockwise, the sixth link 23 is also rotated in the same direction, the memory lock 9 is rotated counterclockwise, the memory lock 9 is engaged with the hole 8, and the memory runner is rotated. 7 is prevented and the original position of the sheet 30 is stored (memory).

  Further, when the fourth link 17 rotates counterclockwise, the second pin 28 fixed to the fourth link 17 engages with the fifth link 21 fixed integrally with the first link 10, and the biasing force of the spring Then, the fourth link 17 which is going to return to the original position is held at the illustrated position. Thus, since the state shown in FIG. 10 is obtained, the seat 30 is pushed forward (see FIG. 5) to enable walk-in.

  After the completion of the walk-in, the seat with the seat back 31 moved forward is returned to the memory position, and the upper rail 4 is locked (locked) to the lower rail 2 and then the seat return pattern that causes the seat back 31 is shown in FIGS. Will be described with reference to FIG. As shown in FIGS. 6 and 11, when the seat 30 returns to the memory position, the first link 10 comes into contact with the memory runner 7 and the engagement between the second pin 28 of the fourth link 17 and the fifth link 21 is released. Then, the fourth link 17 returns while rotating to the original position by the biasing force of the spring. At this time, the sixth link 23 integrated with the fourth link 17 also rotates in the same manner, and the memory lock 9 of the memory runner 7 is pushed down to release the memory lock 9 from the hole 8. That is, the memory is released. The memory runner 7 is held on the frame 5 side by the first link 10 and the first spring 33 (see FIGS. 1 and 2).

To return the fourth link 17, the operation handle 18 is moved in the locking direction, and the upper rail 4 is locked (locked) to the lower rail 2.
When the seat back 31 is raised (see FIG. 6), the second link 11 is returned to its original position (see FIG. 8) by the spring. At this time, the third link 12 contacts the rear end of the fourth link 17, but the long hole 13 of the third link 12 rotates along the fifth pin 15 of the second link 11, and the second link 11. When the position returns to the initial position, the third link 12 is also returned to the original position by the spring.

  The counterclockwise rotation of the fourth link 17 (as viewed in FIG. 2) due to the forward tilt of the seat back 31 is achieved by rotating the rod 16 ′ in the circumferential direction and rotating the eighth link 38 counterclockwise as shown in FIG. Rotate in the direction. This movement of the eighth link 38 causes the abutment piece 46 to push down the operation handle 18, causing the upper rail 35 to be unlocked with respect to the lower rail 34. The pin 44 is separated from the step portion 45 ′ and can rotate around the pin 39 of the ninth link 40. However, in the state of FIG. 12, the contact piece 43 contacts the top surface of the bracket 41 and The rotation of the link 40 is restricted.

The forward movement of the seat 30 moves the upper rail 35 as a movable rail that supports the seat 30 forward, so the contact piece 43 of the ninth link 40 is located at the center of the lower rail 34 as a fixed rail. 13, the ninth link 40 further rotates counterclockwise, the step 45 of the ninth link 40 is brought into contact with the pin 44, and the ninth link 40 is in the state shown in FIG. 13. Hold on.
In the state shown in FIG. 13, the upper rails 4 and 35 are unlocked with respect to the lower rails 2 and 34. In other words, both rails are always unlocked in front of the central portion of the lower rails 2 and 34. Even if the operation handle 18 is operated in this state, since the pin 44 of the eighth link 38 is in contact with the stepped portion 45, the movement is restricted, and the operation handle 18 cannot lock both rails. .

As shown in FIG. 5, when the seat back 31 is moved backward while being tilted forward, the contact piece 43 of the ninth link 40 rides on the top surface of the bracket 41 when the seat 30 comes to the center. As a result, the step 45 of the ninth link 40 pushes down the pin 44 to create the state shown in FIG. The eighth link 38 remains in a position to hold both rails unlocked.
When the seat 30 returns to the memory position and the operation handle 18 is operated, the fourth link 17 and the eighth link 38 rotate, and the locked state of both rails is secured (see FIG. 15).

As shown in FIG. 7, the operation when the seat back 31 of the seat 30 moved to the front of the lower rails 2 and 34 is caused will be described with reference to FIG. When the seat back 31 is raised, the fifth link 21 forcibly operates the fifth link 21 so that the fifth link 21 and the pin 28 are disengaged, and the fourth link 17 loses the force to push down the operation handle 18. (See FIG. 11). However, since the contact piece 43 of the ninth link 40 is separated from the bracket 41, the contact piece 46 of the eighth link 38 maintains the force to push down the operation handle 18.
For this reason, the rod 16 ′ holds the fourth link 17 in the rail unlock position. Thus, although the seat back 31 is raised at the front position of the seat 30 in FIG. 7, the rearward movement of the seat 30 is possible without operating the operation handle 18.

The seat 30 is retracted, and the contact piece 43 of the ninth link 40 rides on the bracket 41 (see FIG. 16). As a result, the ninth link 40 rotates in the clockwise direction, the pin 44 moves away from the step portion 45, and comes into contact with the step portion 45 ', thereby allowing the eighth link 38 to rotate in the clockwise direction.
The rotation of the eighth link 38 rotates the fourth link 17 via the rod 16 ′ and locks the upper rails 4, 35 to the lower rails 2, 34.
In this state, when it is desired to further move the seat 30 rearward, the operation handle 18 is operated, and a normal operation for creating a rail unlocked state and retracting the seat is required.

  When the seat 30 is positioned forward from the center of the lower rails 2 and 34 as fixed rails, if the seat back 31 is moved forward and the seat 30 is moved forward for walk-in, the memory runner 7 is moved to the lower rail. 2, 34 remains in the center. For this reason, when the seat back 31 is moved forward or retracted to cause the seat 30 to retract, a rail lock state is created at the location where the memory runner 7 is located.

1 is a perspective view of a preferred embodiment of a vehicle seat slide device of the present invention. It is a front view of the Example of FIG. It is a perspective view which shows the link mechanism distribute | arranged to the other rail. It is a front view of a link mechanism. It is explanatory drawing which shows the movement (walk-in) to the front of a sheet | seat. It is explanatory drawing which shows the return pattern of a sheet | seat. It is explanatory drawing which shows another example of the return pattern of a sheet | seat. It is a front view which shows the normal state of a sheet | seat. It is a front view which shows the state which act | operated the 2nd operation part. It is a front view showing forward movement of a seat. FIG. 6 is a front view showing a state where a sheet is returned to a slide memory position. It is a figure which shows a link mechanism when a seat back is moved forward. It is a figure which shows a link mechanism in the state which moved the sheet | seat forward for walk-in. It is a figure which shows the link mechanism in the middle of the return to the memory position of a sheet | seat. It is a figure which shows a link mechanism when a sheet | seat returns to a memory position. It is a figure which shows a link mechanism when the seat back is moved backward after the seat back is returned in advance.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat slide apparatus 2 One lower rail 3 Memory rail 4 One upper rail 5 Frame 6 Guide shaft 7 Memory runner 8 Hole 9 Memory lock 10 1st link 11 2nd link 12 3rd link 13 Long hole 14,15,20,26 , 27, 28, 29 Pin 17 Fourth link 19 Working portion 21 Fifth link 23 Sixth link 24 Seventh link 30 Seat 31 Seat back 32 Seat cushion 33 First spring 34 Other lower rail 35 Other upper rail 36 Link mechanism 37 Frame 38 Eighth link 39, 44 Pin 40 Ninth link 41 Bracket 43, 46 Contact piece 45, 45 'Step 46' Cam hole 47 Opening

Claims (3)

  In a vehicle seat slide device that releases or locks the movable rail that supports the seat by interlocking with the forward movement of the seat back or by the operation of the operation handle, the seat back is moved forward by moving the seat back forward. A vehicle seat slide device in which the link mechanism of the other rail inactivates the locking mechanism of one rail and allows the seat to move rearward regardless of the state of the seat back at the front position.   The link mechanism has an eighth link held on the movable rail side of the other rail, and a ninth link held on the movable rail side and cooperating with the eighth link, one end of which is detachable from the bracket. 3. The vehicle seat slide device according to claim 2, wherein one end of the ninth link and the bracket are disengaged by advancing the seat. The vehicle seat slide device according to claim 3, wherein the bracket is located rearward from the center of the fixed rail of the other rail.

Images