JPH0451066Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a seat truck used in automobiles, etc., and more specifically, to easily return the seat to the seat position before the walk-in when the person walks in. Regarding the seat track that can be used.

(Prior Art) There is a seat track shown in FIGS. 3 and 4 that returns the seat to the seat position before the walk-in after the walk-in. In these figures, 1 is a lower rail fixedly installed on the floor side,
2 is an upper rail that is slidably fitted to the lower rail 1. Lock holes 3 are bored at a predetermined pitch in the upper rail side portion 2a. A lock plate 4 having a lock lever portion 4a is rotatably attached to the lower rail 1 using a pin 5. And the top rail 2 and the lock plate 4
A tension spring 6 is engaged with the tension spring 6.
On the lock plate 4, on the opposite side of the lock lever part 4a with the pin 5 in between, there is a lock gear part 7b having lock teeth 7a that can be engaged with the lock hole 3, and a lock groove 7c connected to the lock gear part 7b. A memory board 7 consisting of a memory board section 7d is rotatably provided using a pin 8. The lock plate 4 is urged to rotate in the direction in which the lock teeth 7a engage with the lock holes 3 by the aforementioned tension springs 6. The lock plate 4 engages with the lock groove 7c of the memory board 7,
A walk-in lever 9 having an engaging protrusion 9a that prohibits rotation of the memory board 7 is rotatably attached using a pin 10. Furthermore, the walk-in lever 9 is biased to rotate in the direction in which the engagement protrusion 9a engages with the lock groove 7c of the memory board 7 by a compression spring 11 that is engaged with the walk-in lever 9 and the lock plate 4. has been done.
Therefore, the lower rail 1 and the upper rail 2 are arranged so that the lock teeth 7b of the memory board 7 on the side of the lower rail 1 whose rotation is prohibited by the walk-in lever 9 engage with the lock holes 3 of the upper rail 2, so that the upper rail 2 can slide. movement (seat slide) is locked. Further, a hole 9b is bored at one end of the walk-in lever 9, and the hole 9b is connected to a walk-in cable (not shown). The lever 9 is rotated counterclockwise in FIG. 3, and the engagement between the engagement protrusion 9a and the lock groove 7 of the memory board 7 is released.

Next, the operation of the above configuration will be explained.

First, when the seat is to be slid in the locked state in FIG. 3, the lock lever portion 4a of the lock plate 4 is rotated counterclockwise in FIG. 3 against the urging force of the tension spring 6. , the lock of the lock gear portion 7b of the memory board 7 is disengaged from the lock hole of the upper rail 2, and the upper rail 2 becomes slidable relative to the lower rail 1. After the desired seat slide is performed, when the force for rotating the lock lever portion 4a counterclockwise is released, the lock plate 4 rotates clockwise, and the lock teeth 7a and the lock hole 3 are reengaged. and enters the locked state.

Next, a case will be described in which a walk-in is performed in FIG. 3, which is in a locked state. During walk-in, the walk-in lever 9 rotates counterclockwise and engages the engagement protrusion 9a and the lock groove 7 of the memory board 7.
The engagement with c is released, and the memory board 7 becomes rotatable. Then, the lock tooth 7a is connected to the upper rail 2.
The upper rail 2 moves to the walk-in position while the memory board 7 rotates while being engaged with the lock hole 3 of the upper rail 2.

Next, when the walk-in is released, the walk-in lever 9 rotates clockwise, and the engagement protrusion 9a
comes into contact with the circumferential surface of the memory board 7d of the memory board 7. Then, when the upper rail 2 is moved in the direction of the pre-walk-in position, the memory board 7 rotates with the engaging protrusion 9a in contact with the circumferential surface.
When the upper rail 2 comes to the pre-walk-in position, the engaging protrusion 9a engages with the groove 7c and becomes locked again, completing the return to the pre-walk-in position.

According to the above configuration, the seat can be slid by operating the lock lever 4a of the lock plate 4, and after the walk-in, the engagement protrusion 9a of the walk-in lever 9
By moving the upper rail 2 until it engages with the groove 7c, the seat can be returned to the position before the walk-in.

(Problems to be Solved by the Invention) In the seat track configured as described above, the lower rail 1 and the upper rail 2 are locked through a memory board 7 whose rotation is prohibited by a walk-in lever 9. Therefore, there is a problem that the locking strength is weak. And, with the recent long stroke of the seat slide, the memory board 7
There is a problem that the diameter of the memory section 7d becomes large. Also, if the lock lever 4a is operated during walk-in, the memory board 7 will rotate by itself, resulting in an incorrect memory, and in order to reset the seat to the optimal position after the walk-in, the seat must be moved to the incorrect memory position and locked. There was a problem in that the seat had to be slid by operating the lock lever portion 4a again after the condition was established. and,
Since the operating lever part 4a is a swing type that rotates horizontally, it takes up a large space under the seat cushion, which prevents the seat cushion from sinking to a large extent, and also has the problem of easily getting caught in the passenger's foot, etc., resulting in malfunction. There is. Furthermore, since the lock hole 3 drilled in the upper rail 2 is used as a lock, there is a problem in that the engagement is poor and an abnormal rattling noise is generated during walk-in.

The present invention was developed in view of the above-mentioned problems, and its purpose is to have strong locking strength, compact memory, and to be able to release the memory even if the lock lever is operated during walk-in, without having to perform complicated procedures. To provide a seat track in which the seat can be reset to the optimum position, the operating lever is rotary, and no abnormal noise is generated during walk-in.

(Means for Solving the Problems) The present invention for solving the above problems includes a lower rail fixedly installed on the floor side, an upper rail slidably fitted to the lower rail, and provided on the lower rail side, a lock plate with lock teeth engraved thereon; a memory rack provided on the lower rail side with a rack engraved thereon; a pipe rotatably attached to the upper rail; A handle shaft inserted through the handle shaft, a lock lever that is fixed to the pipe and whose engagement with the lock plate is released at the time of walk-in, and a rotating biasing of the pipe in the direction of engagement between the lock lever and the lock plate. a lift lever that is fixed to the handle shaft and rotates together with the lock lever when the seat slide is unlocked; A gear arm pivotally supported by each lever, a gear rotatably attached to the gear arm and capable of meshing with the memory rack, a locking portion connected to the gear and locking the lock lever, and the locking portion. a drum-shaped memory disk having a stop portion as one end and a spiral groove on which the lock lever can slide; a second spring that applies a rotation biasing force in a direction to engage the memory disk with the lock lever; The present invention is characterized in that it includes a third spring that biases the handle shaft to rotate in a direction in which the gear engages with the memory rack.

(Function) In the seat track of the present invention, when the handle shaft rotates, the lift lever and lock lever rotate, the engagement between the lock lever and the lock plate is released, and the engagement between the memory rack and the gear is released. , the upper rail can slide on the lower rail.

Further, at the time of walk-in, only the lock lever rotates, the engagement between the lock lever and the memory disk is released, and the memory disk rotates and moves to the walk-in position.

(Example) Next, an example of the present invention will be described using FIGS. 1 and 2.

In FIG. 1 showing the main lock side of the seat track with both side locks, 21 is a lower rail fixed to the floor, and 22 is an upper rail that is slidably fitted to the lower rail 21. lower rail 2
A lock plate 23 having lock teeth 23a carved therein and a memory rack 24 having a rack 24a carved therein are provided at the base end 21a of the memory card 1. A support portion 25a is provided at the base end 22a of the upper rail 22.
and 25b, and a second bracket 26 having a support portion 26a are fixed to each other, and a pipe 27 is rotatably supported by the support portion 25a of the first bracket 25. A handle shaft 28 having an operating handle 28a at the end thereof is rotatably inserted into the pipe 27, and is further supported by a support portion 25b of the first bracket 25 and a second bracket 26. A lock lever 29 is fixed to the pipe 27. The lock lever 29 has a lock plate 23.
A lock part 29b having a lock hole 29a that can be engaged with a lock tooth 23a of the memory board 29a, and a bent protrusion 29c that can be engaged with a locking part 38a of a memory board 38, which will be described later.
The wire hook 29e is provided on the side of the locking portion 29b and to which a walk-in wire (not shown) is locked.
Furthermore, the lock portion 29b and the engaging portion 29d are connected to each other by a pin 30.
are connected. When walking in, the lock lever 29 rotates and the lock plate 23
The engagement between the lock tooth 23a and the lock hole 29a of the lock lever 29 and the engagement between the bent protrusion 29c and the locking portion of the memory disk are released.
A hook protrusion 27a for a connecting wire to a sub-block (not shown) is protruded from the end of the pipe 27 on the side of the operating handle 28a. Then, a first spring, in this embodiment, a pipe 27 is wound around one end 31.
The pipe 27 is engaged with the lock hole 29a of the lock lever 29 and the lock tooth 23a of the lock plate 23 by the torsion coil spring 31 whose part a is held by the hook protrusion 27a and the other end 31b is held by the base end 22a of the upper rail 22. It is urged to rotate in the direction of alignment. A lift lever 32 is fixed to the handle shaft 28. lift lever 32
is the lift lever contact protrusion 29 of the lock lever 29
It has a lock lever contact protrusion 32a that can come into contact with the lock lever f. When the operating handle portion 28a is operated, the lift lever 32 rotates, and the lock lever abutting protrusion 32a of the lift lever 32 abuts the lift lever abutting protrusion 29f of the lock lever 29, so that the lock lever 29 also rotates. There is. The upper rail 22 is further provided with a gear arm bracket 33. One end 34a of the gear arm 34 is attached to the gear arm bracket 33 using a pin 35, and the other end 34b is attached to the pin 3.
6 and is pivotally supported on the lift lever 32.
Note that the lift lever 32 has an elongated hole (not shown) in the vertical direction, and a pin 36 is inserted through the elongated hole. Therefore, when the lift lever 32 rotates, the gear arm 34 moves toward the pin 35 on the one end 34a side.
The other end portion 34b is adapted to rotate horizontally around the center. The gear arm 34 includes a resin gear 37 that can mesh with the rack 24a of the memory rack 24, and a hole that is connected to the gear 37 and that can be engaged with the bent protrusion 29c of the engaging portion 29d of the lock lever 29. A drum-shaped memory board 38 is rotatably mounted, having a shaped engaging portion 38a and a spiral groove 38b having the engaging portion 38a as one end and in which the bending protrusion 29c can slide. When the bent protrusion 29c of the engaging portion 29d of the lock lever 29 and the engaging portion 38a of the memory disk 38 are engaged, rotation of the memory disk 38 and the gear 37 is prohibited. A second spring, in this embodiment a torsion coil spring 39, is disposed inside the memory board 38. This torsion coil spring 39 has a starting end 3 as shown in FIG.
9a, the terminal end 39b is bent to form the starting end 39a.
is in contact with the gear arm 33, and the terminal end 39b is locked with the memory board 38. The torsion coil spring 39 applies a counterclockwise (anti-walk-in direction) rotation biasing force to the gear 37 and the memory board 38. Handle shaft 28
A third spring, in this embodiment, the handle shaft 28, is wound around the opposite end of the handle 28a, and one end 40a is connected to the slot 28b provided at the end of the handle shaft 28, and the other end 39b is connected to the opposite end of the handle 28a. is locked to the first bracket 25 on the side of the upper rail 2, and applies a rotation urging force to the handle shaft 28 in the direction in which the gear 37 meshes with the rack 24a of the memory rack 24.

Next, the operation of the above configuration will be explained. First, when performing a seat slide, the first
, the operating handle 28a is rotated in the direction of the arrow. Then, the lift lever 32 and the lock lever 29 that the lift lever 32 contacts rotate in the direction of the arrow, and the lock hole 2 of the lock lever 29 is opened.
9a and the lock tooth 23a of the lock plate 23 is released, and the lift lever 32 further rotates, the gear arm 34 horizontally rotates around the pin 35, and the gear 37 and the memory rack 24 are rotated.
The engagement with the rack 24a is released, and the upper rail 22 becomes able to slide on the lower rail 21.
After the desired seat slide is performed, when the force that rotates the operating handle 28a is released, the rotation biasing force of the torsion springs 31 and 40 locks the lock lever 29 and the lift lever 3.
2 rotates in the opposite direction of the arrow, and the lock hole 29a of the lock lever 29 engages with the lock teeth 2 of the lock plate 23.
3a, and the gear 37 further meshes with the rack 24a of the memory rack 24, resulting in the locked state shown in FIG. 1 again.

Next, a case will be described in which a walk-in is performed in FIG. 1 in a locked state. When the walk-in is performed, only the lock lever 29 rotates in the direction of the arrow, and the engagement between the lock hole 29a and the lock tooth 23a is released. Further, the engagement between the bending protrusion 29b and the engaging portion 38a of the memory board 38 is also released, and the gear 37 and the memory board 38 are now rotatable.
Then, when the seat walks in, gear 37
The upper rail 22 moves while being engaged with the memory rack 24, and the memory board 38 also rotates in accordance with the amount of movement of the upper rail 22. At this time, the bent protrusion 29c of the engaging portion 29d of the lock lever 29 slides along the spiral groove 38b of the memory board 38 in accordance with the amount of movement of the upper rail 22. Next, when the walk-in is canceled and the upper rail 22 is moved to the position before the walk-in, the bending protrusion 29d slides along the groove 38b and the memory board 38 is rotated in the opposite direction to the previous walk-in. When the upper rail 22 is moved to the pre-walk-in position, the bending protrusion 29d engages with the engaging portion 38a, and the lock hole 29a engages with the lock plate 23.
It engages with the lock teeth 23a of the walk-in, and becomes locked again, completing the return to the position before the walk-in.

According to the above configuration, the lower rail 21 and the upper rail 22 are locked by the lock hole 29a of the lock lever 29 provided on the upper rail 22 side and the lock plate 23 provided on the lower rail 21 side.
Since this is done by direct engagement with the lock teeth 23a, the locking strength is strong. The amount of movement of the upper rail 22 to the walk-in position is such that the bending protrusion 29c of the lock lever 29
It is memorized by sliding the spiral groove 37b of No. 8, but since the groove 37b is spiral,
Even when the stroke length of the seat slide is long, the memory board 38 can be made compact.
Further, when the operation handle 28 is operated during the walk-in, the gear 37 and the memory rack 24 are disengaged, and the gear 37 and the memory board 38 become rotatable. Then, the memory board 38 is rotated by the torsion spring 39 to a position where the bending protrusion 29c and the engaging portion 38a can engage, and further, when the walk-in is released, the memory disk 38 is engaged with the bending protrusion 29c. The lock tooth 23a engages with the portion 38a and the lock hole 29a, and the lock is immediately locked.
The seat position can be reset without having to move the seat once to obtain a locked state even at the incorrect memory position as in the conventional system. And operation handle 2
Since the seat cushion 8a is a rotating type, the space under the seat cushion is small, the seat cushion can be largely sunken, and it is less likely to catch the passenger's feet, which is less likely to cause malfunction.
In addition, the rack for rotating the memory board 38 is provided separately as the memory rack 24 instead of using a hole provided in the upper rail as in the conventional example, and the gear 37 and the memory board 38 are made of resin. The mesh is good and there is no abnormal noise during walk-in.

Note that the present invention is not limited to the above embodiments.

(Effects of the invention) As explained above, according to the invention, the locking strength is strong, the memory board is compact, and the memory can be cleared even if the operation handle is operated in a walk-in system, eliminating the need for complicated procedures. The seat can be reset to the optimal position both times, and the operating handle is rotatable, making it possible to realize a seat track that does not generate abnormal noises during walk-in.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The drawings are a sectional view taken along the line AA in FIG. 1, FIG. 3 is a plan view showing a conventional example, and FIG. 4 is a side view in FIG. 3. 1, 21... Lower rail, 2, 22... Upper rail, 2a... Side part, 3, 29a... Lock hole, 4, 23... Lock plate, 4a... Lock lever part, 5, 8, 10, 30, 35, 36...
...Pin, 6...Tension spring, 7...Memory board, 7a, 23a...Lock tooth, 7b...
Lock gear part, 7c...Lock groove, 7d...Memory board part, 9...Walk-in lever, 9a...
Engagement protrusion, 9b...hole, 11...compression spring, 21a, 22a...base wall portion, 24
...Memory rack, 24a...Rack, 25
...First bracket, 25a, 25b, 26...
Support part, 26...Second bracket, 27...Pipe, 27a...Hook protrusion, 28...Handle shaft, 28a...Operation handle, 28b...Slit part, 29...Lock lever, 29b...Lock part , 29c... bending protrusion, 29d... engaging portion,
29e...Wire hook, 29f...Lift lever contact projection, 31...Torsion coil spring (first spring), 31a, 40a...One end, 30b, 40b...Other end, 32...Lift lever, 32a ...Lock lever contact protrusion, 33...
...Gear arm bracket, 34...Gear arm,
34a...one end, 34b...other end, 37...
Reduction gear, 38...Memory board, 37a...Engaging portion, 37b...Groove, 39...Torsion coil spring (second spring), 39a...Starting end, 39b...Terminal end, 40... Torsion coil spring (third spring).

Claims (1)

[Scope of utility model registration request] a lower rail fixed to the floor side; an upper rail slidably fitted to the lower rail; a lock plate provided on the lower rail side with lock teeth carved thereon; A carved memory rack, a pipe rotatably installed along the upper rail, a handle shaft rotatably inserted through the pipe, and a handle shaft fixed to the pipe and engaged with the lock plate. a lock lever that is released when the user walks in; a first spring that rotationally biases the pipe in the direction of engagement with the lock lever and the lock plate; a lift lever that abuts and rotates with the lock lever; a gear arm having a base end on the upper rail side and a horizontal rotation end pivotally supported on the lift lever; and a gear arm rotatably attached to the gear arm; a gear that can mesh with the memory rack;
a drum-shaped memory disk having a locking portion connected to the gear and locking the lock lever; and a drum-shaped memory disk having a spiral groove with the locking portion as one end, in which the lock lever can slide; and a third spring that biases the handle shaft to rotate in a direction in which the gear engages with the memory rack. Seat track.