JP4399726B2 - Automotive slide seat with fixed-point return memory mechanism - Google Patents

Description

  The present invention relates to a slide seat for an automobile including a slide lock mechanism that can be unlocked by a forward tilt of a seat back separately from a normal lever operation.

  In order to adjust the seat position in the front-rear direction in the vehicle according to the physique of the seated person and the like, a slide lock mechanism that can be unlocked by a normal lever operation is provided. Separately, in order to secure a walk-in space, luggage space, etc. in the car, it is equipped with a slide lock mechanism that can be unlocked even by tilting the seat back forward, so that the seat can be moved forward in the car. is there.

  In the latter automobile slide seat, the seat in the unlocked state of the slide lock mechanism by moving the seat back forward is moved toward the front of the vehicle, and then the seat back is returned to the seated position to unlock the slide lock mechanism. The seat is configured so that the seat can be quickly returned from the front to the rear in a state of being in a state, and has a fixed point return memory mechanism that locks the slide lock mechanism as the seat returns to the initial fixed point position. Proposed.

  An example (Patent Document 1) that is functionally approximated to the automobile slide sheet is a projecting projecting system in which a plurality of downward protruding teeth arranged in the front-rear direction are provided in the flange portion of the lower rail, and a notch hole is formed to mesh with the protruding teeth of the lower rail A latch having a piece is pivotally supported on the middle abdomen and provided on the upper rail, and this latch is spring-biased in engagement with the projecting teeth and connected to an operation lever provided at the front lower portion of the seat cushion on the front end side, and the operation lever When the lever is pulled up, a slide lock mechanism is provided that unlocks the latch by releasing the latch from the teeth of the lower rail.

  At the same time, a lock releasing mechanism is provided so that the slide lock mechanism can be unlocked even when the seat back is moved forward. This unlocking mechanism consists of a support plate fixed to the upper side of the slide rail, an unlocking lever that is pivotably mounted by inserting a support shaft protruding from the side surface of the support plate into the middle abdomen, and the front end side is the same. A trigger is mounted on a side surface of the support plate with a support shaft so as to be turnable.

  The unlocking lever has a first pin that abuts the upper edge of the latch on the upper side by connecting a traction cable extending from the seat back and supported by the side of the support plate to the side just below the support shaft with a hook at the end of the cable. When the pulling force by the pulling cable accompanying the forward tilting of the seat back is applied, the latch is pushed down and swung by the first pin, so that the slide lock mechanism is unlocked. A second pin is provided on the lower end side of the unlocking lever so as to come into contact with an upper edge that curves downward toward the rear of the trigger.

  The trigger has a horizontal flap that extends to the lower side of the lower rail and a finger that rises upward on the lower side of the lower rail from the extended end of the flap, and moves the flap and fingers along the longitudinal direction on the lower side of the lower rail. It is attached to the support plate so that it can be moved. Also, the second pin of the unlocking lever mentioned above is brought into contact with the upper edge that curves downwardly toward the rear, and the rear end by a spring that spans between the rear end of the flap and the rear middle abdomen of the unlocking lever It is tension-supported so that it can turn upward from the side.

  In addition, a curved V-shaped contact piece on the tip side is attached and fixed at a predetermined position in the longitudinal direction on the lower side of the lower rail so that the fingers of the trigger are in contact with each other.

  In the unlocking mechanism, when the seat is moved forward in the vehicle, the seat back is moved forward as described above, and when the pulling force of the pulling cable acts on the unlocking lever, the unlocking lever latches the first pin. Press and swing to keep the slide lock mechanism unlocked. At the same time, the second pin of the unlocking lever moves to the rear end side that curves downward while slidingly contacting the upper edge of the trigger, and the trigger is pulled upward by the spring from the rear end side so that the unlocking lever is moved to the rear end side. Locks so that it cannot swing.

  In order to return the seat from the front to the rear in the vehicle, first, the seat is returned to the sitting position. Along with this, the pulling force of the unlocking lever by the traction cable is released, but the second pin of the unlocking lever engages with the rear end side of the trigger, and the trigger cannot swing the unlocking lever at the rear end side. Therefore, the slide lock mechanism is kept in the unlocked state with the unlocking lever pushing down the latch with the first pin. Thus, the seat can be quickly returned from the front to the rear in the vehicle.

  As the seat returns to the rear of the car, the trigger finger touches the contact piece of the lower rail, the trigger pivots downward against the spring, and the second pin of the unlocking lever is on the upper side of the trigger. Since it moves to the front end side that curves upward while sliding on the edge, the trigger releases the locking of the unlocking lever, and the unlocking lever returns and swings. When the unlocking lever returns and swings, the unlocking lever releases the push of the latch by the first pin, so that the slide lock mechanism is locked.

In the unlocking mechanism, the upper rail trigger and the lower rail contact piece are assembled as a fixed point return memory mechanism of the seat.
JP 10-181394 A

  In the above-described unlocking mechanism, the first pin that swings the latch protrudes from the upper end side, while the unlocking lever that protrudes the second pin that pivots the trigger on the lower end side is located below the lower rail from the upper rail. In addition, a trigger is attached to the lower side of the lower rail with a flap, and a spring that pulls the unlocking lever and the trigger together is hung between the rear end of the flap and the rear middle abdomen of the unlocking lever. Since there are many components to be assembled on the lower side of the lower rail, it is structurally complicated and requires a lot of time for assembly.

  Further, even when the seat is moved to a predetermined position in the front of the vehicle and temporarily stopped, the slide lock mechanism remains in the unlocked state. The slide lock mechanism may be locked when the vehicle is temporarily stopped, and the slide lock mechanism may be unlocked when the seat is moved back from the front to the rear of the vehicle.

  The problem to be solved by the present invention is that the seat can be quickly returned from the front to the rear in the vehicle while the slide lock mechanism is unlocked, and the seat is returned to the initial fixed position. And a slide lock mechanism that can be automatically locked and has a simple structure.

  In addition, when the seat is configured to be able to return from the front to the rear in the vehicle while the slide lock mechanism is unlocked as described above, the seat is moved to a predetermined position in the front of the vehicle and temporarily stopped. But it has a slide lock mechanism that can be locked.

Claim 1 of the present invention is a left-right pair consisting of a lower side laid in the front-rear direction of the vehicle body floor and an upper side attached to the lower side of the seat cushion and slidably supported on the lower side. With slide rails,
A lock lever that can swing in the form of a seesaw is mounted on the upper side, and a lock piece that can be engaged with or disengaged from the lower side is spring-biased in an engaged state with the lower side and held at the front end side of the lock lever. Hold the lock lever from the rear end side, and hold the pressing lever to release the lock piece from the lower side so that it can pivot on the operating shaft between the left and right upper sides,
In addition to the normal lever operation, in the automobile slide seat with a slide lock mechanism that can be unlocked by turning the operating shaft by tilting the seat back forward,
At the time of unlocking the slide lock mechanism by tilting the seat back forward, the lock lever to be pressed by the pressing lever is pulled by a spring so that it can be locked on the rear end side, and the latch is attached to the bearing from the upper side toward the lower side. A lock-off plate is installed on the lower side corresponding to the initial fixed point position of the seat, when the seat with the back position returned from the front of the vehicle to the rear of the vehicle, the latch latch hits the lower end and swings away from the lock lever. Equipped with a fixed point return memory mechanism,
Attach the lock latch that engages with the latch latch and the gear teeth that can pivot in the opposite direction from the front side to the lower side from the upper side to the lower side. The lock-on plate that hits the lock latch near the lower end and releases the latch latch from the lock lever is installed on the lower side according to the front stop position of the seat,
A seat that is locked by returning the seat back posture at the front stop position of the seat, and is unlocked by tilting the seat back forward and returning the lock latch from the lock-on plate to return the seat to the rear of the vehicle from the front stop position. A slide lock mechanism is provided that is kept in an unlocked state by a latch that latches the lock lever when the position is returned.

  According to the second aspect of the present invention, the operating lever and the seat back are individually connected by the operating shaft and the two traction cables, and from the stroke difference between the traction cables, the seat lever is more than the turning angle of the pressing lever by the normal lever operation. The turning angle of the pressing lever by the forward tilting of the back is set to be large, and a latching latch capable of locking the lock lever is provided when the slide lock mechanism is unlocked by the forward tilting of the seat back.

In the slide seat for automobiles with the fixed point return memory mechanism according to claim 1 of the present invention, it is attached to the lower side of the vehicle seat floor and the lower side of the seat cushion and is slidable on the lower side. It has a pair of left and right slide rails consisting of a supported upper side,
A lock lever that can swing in the form of a seesaw is mounted on the upper side, and a lock piece that can be engaged with or disengaged from the lower side is spring-biased in an engaged state with the lower side and held at the front end side of the lock lever. Holds the lock lever from the rear end side and detaches the lock piece from the lower side. The push lever is pivotably held by the operating shaft between the left and right upper sides. A slide lock mechanism having a simple configuration of unlocking by rotating the operation shaft is provided.

  In the configuration of the slide lock mechanism, when unlocking the slide lock mechanism by tilting the seat back forward, the lock lever to be pressed by the pressing lever is spring-loaded so that it can be locked on the rear end side, and the latch latch is moved from the upper side to the lower side. When the seat is mounted on the side and the seat back is returned from the front of the vehicle to the rear of the vehicle, the latch latch hits the lower end and the lock-off plate swings away from the lock lever. Since the fixed-point return memory mechanism installed on the lower rail in accordance with the position is provided, there is no need for a component member to be assembled to at least the lower side of the lower side. For this reason, the whole mechanism including the fixed point return memory mechanism can be configured mechanically simple, and each part of the mechanism including the latching latch and the lock-off plate can be easily assembled.

In addition, the latch latch that engages with the latch latch and the gear teeth that can pivot in the opposite direction facing each other from the front side is mounted on the bearing from the upper side toward the lower side, and the seat back is moved forward from the rear of the seat to the front of the vehicle. A lock-on plate is installed on the lower side corresponding to the front stop position of the seat, so that the lock latch hits near the lower end and moves the latch latch away from the lock lever when moving to
A seat that is locked by returning the posture of the seat back at the front stop position of the seat, and is unlocked by tilting the seat back forward and returning the lock latch from the lock-on plate to return the seat from the front stop position to the rear in the vehicle. Because it has a slide lock mechanism that is held in an unlocked state by a latch that locks the lock lever by returning the position of the seat, it can be locked even when the seat is moved to a predetermined position in the front of the vehicle and stopped once. The slide lock mechanism can be maintained in the unlocked state even when the vehicle is returned from the front to the rear in the vehicle.

  In the slide seat for automobiles with the fixed point return memory mechanism according to claim 2 of the present invention, the operation lever and the seat back are individually connected by the operating shaft and the two traction cables, and the normal lever is determined from the stroke difference between the traction cables. Set the pivot angle of the push lever by tilting the seat back forward than the pivot angle of the press lever by operation, and provide a latch that can lock the lock lever when unlocking the slide lock mechanism by tilting the seat back forward Therefore, only when the slide lock mechanism is unlocked by moving the seat back forward, the lock lever can be securely locked with the latch, and each part of the mechanism including the two traction cables can be easily assembled with a simple configuration. .

  FIG. 1 shows a main part of a slide lock mechanism including a fixed point return memory mechanism mounted on an automobile slide seat (not shown). The slide seat for an automobile provided with the slide lock mechanism is set so that the arrow X is the front side in the vehicle and the arrow Y is the rear side in the vehicle.

  The automobile slide seat can be applied to any of a front seat, a second seat, and a third seat mounted on a wagon car, for example. Mainly, since a long-type slide rail is provided to secure a walk-in space, a luggage space, etc. in the vehicle, it is applied to construct a rear side seat including a second seat and a third seat.

  The slide rail 1 includes a lower side 1a (hereinafter referred to as “lower rail”) laid across the longitudinal direction of the vehicle body floor, and an upper side 1b (hereinafter referred to as “upper rail”) slidably supported by the lower rail 1a. It is assembled with a pair of left and right rails. In this configuration, the upper rail 1b is attached to the lower side of a seat cushion (not shown) with a rising frame 1c rising upward. The lower rail 1a is provided with a plurality of stop holes 1d in which the lock pieces to be described later engage or disengage in the longitudinal direction of the bottom surface.

  Hereinafter, each mechanism part will be described with reference to FIGS. 2 and 3. The slide lock mechanism includes a lock piece 2 that can be engaged with or detached from the lower rail 1 a as main components, and holds the lock piece 2 on the front end side. And a pressing lever 4 for pressing the locking lever 3 from the rear end side and releasing the locking piece 2 from the lower rail 1a.

  The lock piece 2 has two projecting teeth 21a and 21b projecting downward from the rectangular main body 20, and the upper rail 1b so that each projecting tooth 21a and 21b meshes with or disengages from a stop hole 1b which is a pair of front and rear of the lower rail 1a. It can be moved up and down. The lock piece 2 is held so as to be slidable by inserting a rising piece 22 extending upward at the center of the upper portion of the rectangular main body 20 into a planar U-shaped holder 1e protruding from the plate surface of the rising frame 1c.

  The lock lever 3 is formed of an elongated plate member extending in the front-rear direction in the vehicle. The lock lever 3 is pivotally mounted so as to be swingable in the form of a seesaw since the support shaft 30 protruding from the plate surface of the rising frame 1c is inserted through the plate surface at the center in the longitudinal direction. Further, the rear end side is always kept on the rear side by a coil spring 32 that is spanned between the spring hook pin 31 protruding from the plate surface near the rear end via the support shaft 30 and the spring hook pin 1f protruding from the plate surface of the rising frame 1c. It is tension supported upward.

  At the distal end side of the lock lever 3, a guide pin 23 protruding laterally from the upper side of the rectangular main body 20 is inserted into an elongated hole 33 opened on the side surface close to the distal end, so that the lock piece 2 swings the lock lever 3. It is held to move up and down with the movement. As described above, since the lock lever 3 is pulled upwardly on the rear end side as described above, the lock piece 2 is provided so that the protruding teeth 21a and 21b mesh with the two retaining holes 1d in a normal state.

  The pressing lever 4 is rotatably held by the operating shaft 5 because the plate surface near the rear end is fitted and fixed on the axis of the operating shaft 5. The pressing lever 4 is arranged to extend forward so that the rear end side is the base and the front end side is opposed to the rear end side of the lock lever 3. Since the operation shaft 5 is rotatably supported on each plate surface of the rising frame 12, the operating shaft 5 is attached to the left and right rising frames 12.

  On the front end side of the pressing lever 4, a presser pin 40 is mounted so as to protrude toward the rear end side of the lock lever 3. With respect to the presser pin 40, a receiving piece 34 facing the presser pin 40 on the lower side is provided so as to protrude from the lower side near the rear end of the lock lever 3.

  Two rising brackets 6, 7 are installed on the axis of the operating shaft 5. The rising brackets 6 and 7 are fitted and fixed on the lower plate surface on the axis of the operating shaft 5 while maintaining the same angle and posture, so that the rising brackets 6 and 7 are mounted so as to be parallel to each other at intervals. Two pulling cables 8 and 9 are connected to the upper end sides of the rising brackets 6 and 7 by being hooked on the plate surfaces of the projecting pieces 6a and 7a by slits 6b and 7b. The pulling cables 8 and 9 are provided with cable wires inserted through resin tubes.

  One of the two traction cables 8 and 9 is an operation lever provided on the seat cushion so that a tensile force is applied to the rising bracket 6 by a normal operation when the seat position is adjusted back and forth according to the body shape of the occupant. (Not shown). The other 9 is connected to an operation lever provided in the seat back frame or the seat back so that a tensile force acts on the rising bracket 7 when the seat back (not shown) is moved forward.

  The traction cables 8 and 9 are both provided to pull the rising brackets 6 and 7 to rotate the operating shaft 5 and to rotate the pressing lever 4 mounted on the axis of the operating shaft 5 downward. ing. Due to the difference in tension stroke between the traction cables 8 and 9, the turning angle of the pressing lever 4 due to the forward tilting of the seat back is set to be larger than the turning angle of the pressing lever 4 by normal lever operation.

  Under the configuration of the slide lock mechanism, the fixed point return memory mechanism is assembled with a latch latch 10 that locks the lock lever 3 from the rear end side as a main component, and a contact plate 11 of the latch latch 10. ing.

  The latch 10 has a hook 10a on the upper end side, and is pivotably supported by pivotally supporting the middle abdomen on the side surface of the rising frame 1c with a support shaft 10b. Thus, the lower rail 1a is lower than the upper rail 1b. It is mounted in a standing posture toward the head. The hook 10a is formed to have a wedge shape from a guide side projecting forward with a downward slope from the upper end side and a hook side notched rearward from the lower end of the guide side. On the lower side of the hook 10a, arc-shaped gear teeth 10c whose tooth tips are arranged concentrically are provided so as to project forward.

  With respect to the latch 10, the engagement piece 35 of the hook 10 a is provided so as to protrude from the upper side near the rear end of the lock lever 3 in the direction opposite to the receiving piece 34 of the presser pin 40. Further, a stopper piece 10d that comes into contact with the lower part of the latch 10 from behind is provided so as to protrude from the side surface of the upper rail 1b.

  Along with the stopper piece 10d, a coil spring 10e that pulls and supports the latch latch 10 is between a spring latch piece 10f that projects from the middle side of the latch latch 10 and a spring latch pin 1g that projects from the plate surface of the rising frame 1c. It is installed on the wall. The coil spring 10e is provided so that the latching latch 10 is brought into contact with the stopper piece 10d so as to keep the engagement state with the engagement piece 35.

  Since the latch 10 is mounted on the plate surface of the rising frame 1c by the support shaft 12a from the upper rail 1b toward the lower rail 1a, the lock latch 12 opposed from the front side is combined. The lock latch 12 is provided with arc-shaped gear teeth 12b whose tooth tips are arranged concentrically so as to protrude rearward from the upper end. This lock latch 12 is provided so as to be able to swing in the opposite direction to the latch latch 10 by gear teeth 10c, 12b which mesh with each other.

  The lock latch 12 is provided with a lock-on plate 13 for causing the latch latch 10 to be detached from the lock lever 3 when the seat with the seat back tilted forward moves from the rear to the front in the vehicle and the lower end of the seat abuts. It has been. The rear end side of the lock-on plate 13 is an inclined surface that can be climbed up by the lock latch 12, and is installed inside the lower rail 1a in accordance with the front stop position of the seat.

  The above-described slide lock mechanism and fixed point return memory mechanism have been described based on those provided on one side of the slide rail. However, one operating shaft 5, two rising brackets 6, 7, and two traction cables 8, 9 are provided. It is assembled to the left and right sides of the slide rail as base points.

  At the standard fixed point position (see FIG. 1) of the seat having the slide lock mechanism and the fixed point return memory mechanism, the lock lever 3 is pulled and pulled from the rear end side by the coil spring 32, so that the lock piece 2 is protruded from the protruding tooth 21a. 21b is engaged with the retaining hole 1d of the lower rail 1a, and the slide rail 1 is kept locked by the lock piece 2. Further, since the latch 10 is in contact with the lock-off plate 11 near the lower end, the upper end side swings backward from the rear end side of the lock lever 3 with the support shaft 10b as a fulcrum.

  When the seated person pulls the traction cable 8 by a normal lever operation, the rising bracket 6 is pulled by the traction cable 8 and swings obliquely forward as shown in FIG. The pressing lever 4 turns downward. When the pressing lever 4 pivots, the pressing pin 40 of the pressing lever 4 hits the receiving piece 34 of the locking lever 30 and swings upward on the tip end side of the locking lever 3 holding the locking piece 2. Is lifted away from the lower rail 1a, and the slide lock mechanism is unlocked.

  When the seat occupant adjusts the seat position to the front of the vehicle in accordance with the physique, etc., as shown in FIG. 4b, the seat occupant keeps the slide lock mechanism unlocked while pulling and supporting the operation lever. The rail 1 is moved to the front of the desired position. At this time, until the engagement piece 35 of the lock lever 3 is engaged with the hook 10 a of the latch 10, the lock lever 3 is not pressed by the pressing lever 4 that rotates according to the stroke of the traction cable 8.

  When the seated person moves the seat to a desired front position and releases the operation lever, the pulling by the pulling cable 8 is released. As a result, as shown in FIG. 4c, the lock lever 3 is pulled and pulled from the rear end side by the coil spring 32, and the lock piece 2 engages the protruding teeth 21a and 21b with the stop holes 1d of the lower rail 1a. It is kept locked like this.

  In contrast to the above, when the seat is adjusted to the rear in the vehicle, as shown in FIG. 5a, the seat occupant pulls and supports the operating lever, so the slide lock mechanism is kept unlocked and the seat is moved to the desired position by the slide rail 1. Move backwards. As the seat moves rearward, as shown in FIG. 5 b, the latch 10 is ridden on the lock-off plate 11 and is kept in a swinging posture in the separating direction from the rear end side of the lock lever 3. When the seat occupant moves the seat to a desired rear position and releases the hand from the operation lever, the slide lock mechanism is maintained in the locked state as described above.

  When the occupant leans forward the seat back to secure a walk-in space, a luggage space, etc., as shown in FIG. 6a, a tensile force acts on the traction cable 9, and the rising bracket 7 is pulled by the traction cable 9 and obliquely forward. Since it swings, the operating shaft 5 rotates and the pressing lever 4 pivots downward so that the pressing pin 40 of the pressing lever 4 contacts the receiving piece 34 of the lock lever 30.

  As the seat back is moved forward, the pressing lever 4 presses the lock lever 3 according to the stroke of the traction cable 9 until the engagement piece 35 of the lock lever 3 engages with the hook 10a of the latch 10. Include. When the pressing lever 4 turns, the tip end side of the lock lever 3 holding the lock piece 2 swings upward, so that the lock piece 2 is lifted away from the lower rail 1a, and the slide lock mechanism is unlocked.

  When the seat is moved forward as much as shown in FIG. 6b from the pushed state of the lock lever 3 by the pressing lever 4, the latch 10 is released from the lock-off plate 11, and the coil spring 10d is moved as shown in FIG. 6c. The hook 10 a of the latch 10 is hooked on the engagement piece 35 of the lock lever 3 in order to pull and support the latch 10 so as to contact the stopper piece 10 c at the lower back.

  As a result, the latch 10 latches the lock lever 3 so that the slide lock mechanism is kept unlocked as shown in FIG. 6d. The position can be moved forward.

  When the seat is moved to a predetermined forward stop position (front most), the lock latch 12 rides on the lock-on plate 13 and swings counterclockwise as shown in FIG. 7a. Along with this, the latch 10 is pivoted clockwise by the gear teeth 10 c and 12 b, so that the hook 10 a of the latch 10 is disengaged from the engagement piece 35 of the lock lever 3.

  When the seat back is moved forward after the hook 10a of the latch 10 is disengaged from the engagement piece 35 of the lock lever 3, the lock lever 3 is released from being pushed by the pressing lever 4 as shown in FIG. The lock lever 3 is pulled and pulled from the rear end side by the coil spring 32. Thereby, since the lock piece 2 meshes the protruding teeth 21a and 21b with the retaining holes 1d of the lower rail 1a, the slide lock mechanism is locked.

  When returning the seat from a predetermined forward stop position to a fixed position, the seat back is temporarily moved forward. Accordingly, as shown in FIG. 8 a, the pressing lever 4 is moved according to the stroke of the traction cable 9 until the engagement piece 35 of the lock lever 3 is engaged with the hook 10 a of the latch 10. Press down. When the pressing lever 4 turns, the tip end side of the lock lever 3 holding the lock piece 2 swings upward, so that the lock piece 2 is lifted away from the lower rail 1a, and the slide lock mechanism is unlocked.

  Since the slide lock mechanism is kept unlocked while the seat back is moved forward, when the seat is moved back so that the lock latch 12 is disengaged from the lock-on plate 13 as shown in FIG. 8b, the hook is engaged as shown in FIG. 8c. The latch 10 is pulled by the coil spring 10 e and swings, and the engagement piece 35 of the lock lever 3 is hooked on the hook 10 a of the latch 10. As a result, the latch 10 keeps the slide lock mechanism unlocked.

  Thereafter, when the occupant returns the seat back to the seating posture to facilitate the movement of the seat, the pulling by the traction cable 9 is released as shown in FIG. 9, but the hooking hook 10a of the latching latch 10 is locked to the lock lever. 3, the latch latch 10 keeps the slide lock mechanism in the unlocked state. For this reason, the position of the seat can be immediately moved backward in the vehicle.

  When the seat is returned to the fixed position of the slide rail 1 (position where the lock-off plate 11 is disposed), the latch 10 is moved onto the lock-off plate 11 as shown in FIG. 10 (same as FIG. 1). The hook 10a of the latch 10 is swung so as to be disengaged from the engagement piece 35 of the lock lever 3.

  At substantially the same time, the lock lever 3 is pulled and pulled from the rear end side by the coil spring 32, and the lock piece 2 engages the protruding teeth 21a and 21b with the retaining holes 1d of the lower rail 1a. 2 is kept locked. Accordingly, the seat can be automatically locked by the slide lock mechanism at the initial fixed point position.

  In this way, the upper rail 1c is provided with a latching latch 10 that latches the lock lever 3 that is pressed by the pressing lever 4 of the slide lock mechanism from the rear end side. Since only the lower rail 1a is provided with the abutting plate 11 that swings away from the lower rail 1a, it is not necessary to provide a structural member that is assembled at least to the lower side of the lower rail 1a. Each part of the mechanism including the plate 11 can be easily assembled.

  At the same time, a lock latch 12 that meshes with the latch latch 10 that is opposed to the front side and that is capable of turning in opposite directions is mounted on the upper rail 1b, and the seat back is moved forward from the rear to the front in the vehicle. In some cases, the lock latch 12 includes a slide lock mechanism in which a lock-on plate 13 is disposed on the lower rail so that the lock latch 12 abuts near the lower end to disengage the latch latch 12 from the lock lever 3, and the seat is moved to a predetermined position in the front of the vehicle. The slide lock mechanism can be locked even when the vehicle is stopped, and the slide lock mechanism can be unlocked even when the seat is returned from the front to the rear of the vehicle.

  In addition, because of the stroke difference between the two traction cables 8 and 9 that individually connect the operation lever and the seat back to the operating shaft 5, the pressure by the seat back being pushed forward rather than the turning angle of the press lever 4 by the normal lever operation. Since the turning angle of the lever 4 is set to be large, the lock lever 3 can be reliably locked by the latch 10 only when the slide lock mechanism is unlocked by the forward tilt of the seat back, and the two pulling cables 8, 9 can be easily assembled with a simple configuration.

It is a side view which shows roughly the slide lock mechanism containing the fixed point return memory mechanism of the principal part with which the slide seat for motor vehicles based on this invention is equipped. FIG. 2 is a plan view schematically showing a slide lock mechanism including the fixed point return memory mechanism of FIG. 1. It is a perspective view which shows schematically the action | operation shaft which connects the traction cable of FIG. FIG. 3 is an operation explanatory diagram showing the slide lock mechanism of FIG. 1 when the unlocked state is maintained by a normal lever operation when the seat moves forward. It is operation | movement explanatory drawing shown at the time of adjusting the position of a seat to the vehicle interior front, maintaining the slide lock mechanism of FIG. 4a in an unlocked state. It is operation | movement explanatory drawing shown when the slide lock mechanism of FIG. 4b is kept in the locking state by lever release in the front adjustment position of a seat. FIG. 3 is an operation explanatory diagram showing the slide lock mechanism of FIG. 1 at the time when the unlocked state is maintained by a normal lever operation when the seat is moved backward. It is operation | movement explanatory drawing shown when the slide lock mechanism of FIG. 5a is kept in the locking state by lever release in the back adjustment position of a seat. FIG. 2 is an operation explanatory diagram showing the slide lock mechanism shown in FIG. 1 when the seat back is held in an unlocked state by moving the seat back forward. It is operation | movement explanatory drawing shown in the initial stage which maintains the slide lock mechanism of FIG. 6a in an unlocked state. It is operation | movement explanatory drawing shown at the time of keeping the slide lock mechanism of FIG. 6b in an unlocked state. FIG. 6C is an operation explanatory view showing the position when the seat is moved forward in the vehicle while the slide lock mechanism of FIG. 6C is kept unlocked. It is operation | movement explanatory drawing which shows the slide lock mechanism of FIG. 1 at the time of a movement to the front stop position of a seat. It is operation | movement explanatory drawing which shows the slide lock mechanism of FIG. It is operation | movement explanatory drawing which shows the slide lock mechanism of FIG. It is operation | movement explanatory drawing which shows the slide lock mechanism of FIG. It is operation | movement explanatory drawing shown at the time of keeping the slide lock mechanism of FIG. 8c in an unlocked state. It is operation | movement explanatory drawing which shows the slide lock mechanism of FIG. FIG. 10 is an operation explanatory diagram when the slide lock mechanism of FIG. 9 is kept in a locked state accompanying the fixed point return of the seat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slide rail 1a Lower side 1b Upper side 2 Locking piece 3 Lock lever 32 Locking lever tension spring 4 Pressing lever 5 Actuation shaft 8, 9 Pulling cable 10 Latching latch 10c Latching latch gear teeth 10e Latching latch tensioning spring 11 Lock-off plate 12 Lock latch 12b Gear teeth of lock latch 13 Lock-on plate

Claims (2)

It has a pair of left and right slide rails consisting of a lower side laid across the front and rear direction of the vehicle body floor and an upper side attached to the lower side of the seat cushion and supported slidably on the lower side,
A lock lever that can swing in the form of a seesaw is mounted on the upper side, and a lock piece that can be engaged with or disengaged from the lower side is spring-biased in an engaged state with the lower side and held at the front end side of the lock lever. Hold the lock lever from the rear end side, and hold the pressing lever to release the lock piece from the lower side so that it can pivot on the operating shaft between the left and right upper sides,
In addition to the normal lever operation, in the automobile slide seat with a slide lock mechanism that can be unlocked by turning the operating shaft by tilting the seat back forward,
At the time of unlocking the slide lock mechanism by tilting the seat back forward, the lock lever to be pressed by the pressing lever is pulled by a spring so that it can be locked on the rear end side, and the latch is attached to the bearing from the upper side toward the lower side. A lock-off plate is installed on the lower side corresponding to the initial fixed point position of the seat, when the seat with the back position returned from the front of the vehicle to the rear of the vehicle, the latch latch hits the lower end and swings away from the lock lever. Equipped with a fixed point return memory mechanism,
Attach the lock latch that engages with the latch latch and the gear teeth that can pivot in the opposite direction from the front side to the lower side from the upper side to the lower side. The lock-on plate that hits the lock latch near the lower end and releases the latch latch from the lock lever is installed on the lower side according to the front stop position of the seat,
A seat that is locked by returning the seat back posture at the front stop position of the seat, and is unlocked by tilting the seat back forward and returning the lock latch from the lock-on plate to return the seat to the rear of the vehicle from the front stop position. A slide seat for an automobile with a fixed point return memory mechanism, comprising a slide lock mechanism that is held in an unlocked state by a latch that latches the lock lever by returning the position of the lock lever. The operation lever and seat back are individually connected by the operating shaft and two traction cables. From the stroke difference of each traction cable, the rotation of the pressure lever by tilting the seat back forward rather than the turning angle of the pressure lever by normal lever operation 2. A vehicle with a fixed point return memory mechanism according to claim 1, further comprising a latch that can lock the lock lever when the slide lock mechanism is unlocked by setting the corner large and the seat back is moved forward. Slide sheet.

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