JPS61205524A - Walk-in device for car seat - Google Patents

Abstract

PURPOSE:To make a lock mechanism and a memory mechanism operatable without fail, by connecting a reclining device directly to the lock mechanism with a flexible wire through no aid of a relay mechanism. CONSTITUTION:Reclining devices 11 and 50 at the outside of a car body is connected directly to both slide rails 6 and 7 at the center side of the car body with an inner wire 48. And, a tip part of an arm, where double structural flexible wires 14, 15 and 37 are extendedly installed in a right-angled crossing direction with each longitudinal direction of these slide rails 6 and 7, is locked to an outer wire 41, and tensile force from these reclining devices 11 and 50 is made so as to be transmitted to the lock mechanism 8 combined with a memory mechanism in the right-angled crossing direction with the longitudinal direction of these slide rails 6 and 7.

Description

[Detailed Description of the Invention] <Industrial Application Fields> The present invention relates to a walk-in device for an automobile seat, particularly a two-way vehicle seat walk-in device.
This invention relates to a walk-in device that slides the entire front seat of a door-operated vehicle to the frontmost position along with the forward tilting of the seat back, in view of ease of getting in and out of the rear seat side passenger.

<Prior Art> In the conventional so-called "walk-in device", as shown in FIG. Upper rails 5a and 5, which are fixed to the lower surface of the seat cushion 3 and are always biased forward C by a help spring 4, are connected to the fixed left and right pair of lower rails 2a and 2b, respectively.
The entire body is urged forward C by a pair of left and right slide rails 6.7 on which parts b are attached, and is attached to the vehicle body in such a manner that it can freely slide back and forth.

Of the pair of left and right slide rails 6.7, the upper rail 5a is placed at an arbitrary position on the lower rail 2a on the slide rail 6 on the center side A of the vehicle interior, that is, on the right side in the direction of travel of the vehicle since it is the passenger seat in this case. A locking mechanism 8 is provided to lock into. The reason why the lock mechanism 8 is disposed on the slide rail 6 on the center side A of the vehicle compartment is that the lock mechanism 8 is generally provided with an operating lever 9 for manually releasing the locking state of the lock mechanism 8. It is the body,
If the operating lever 9 is located on the outside B of the vehicle, it will interfere with the passengers getting on and off the vehicle, and if it is located on the center side A of the vehicle, the driver can also operate the operating lever 9 from the seat next to him. be.

10 is a hinge, and 11 is a reclining device for supporting the seat back 12 so that it can be tilted forward or backward; the reclining device 11 includes a reclining lever 13 or 2 for tilting the seat back 12 forward or backward; Although not shown, a coil spring or the like that biases the seat back 12 in the forward direction is installed. In this way, the reclining lever 13 is arranged in the reclining device 11 on the outside B of the vehicle.
This is to make it easier for passengers to operate the vehicle themselves when getting on board.

The locking mechanism 8 and the reclining device 11 on the outside B of the vehicle are connected via a relay mechanism 16 provided on the upper surface of the slide rail 7 on the outside B of the vehicle by two flexible wires 14 and 15 as a "transmission mechanism". and is connected to the locking mechanism 8. As the seatback 12 is tilted forward, the flexible wires 14 and 15 pull the flexible wire 14 stretched in the front-rear direction, and transmit this tension in the left-right direction via the relay mechanism 16, that is, to the slide rail 6. , and transmits it to the next flexible wire 15. The locking mechanism 8 is released from the locked state by the tensile force from the left and right flexible wires 15, and slides the entire seat 1 to the frontmost position so that the passenger can easily get on and off the rear seat as described above.

In this way, the direction of transmission of the tensile force is changed via the relay mechanism 16 by the reclining device 1 on the outside of the passenger compartment B.
1, a tensile force is generated in the longitudinal direction as the seatback 12 is tilted forward, while the locking mechanism 8 disposed on the slide rail 6 on the center side A of the vehicle compartment is moved in the left-right direction [perpendicular to the longitudinal direction of the slide rail 6]. The reclining device 11 and the locking mechanism 8
If they are simply connected by one flexible wire, the tensile force from the reclining device 11 will be transmitted diagonally to the locking mechanism 8 due to their positional relationship, making it impossible to operate the locking mechanism 8 normally. It is from.

9 Although not shown in the drawings, after the seat 1 has been slid to the frontmost position, when the seat back 12 is raised and slid backwards, the lock mechanism 8 is moved to a preset position (normal position). The seat can be automatically locked in an average seat position that allows an adult to sit in a comfortable and natural posture. Walk-in devices in which a so-called "memory mechanism" is combined with the locking mechanism 8 are also generally well known.

<Problems to be Solved by the Invention> As described above, in the conventional walk-in device for a car seat, the reclining device 11 on the outer side B of the vehicle interior and the slide rail 6 on the center side A of the vehicle interior are arranged. The lock mechanism 8 is connected by two flexible wires 14 and 15 via a relay mechanism 16, and the tensile force in the longitudinal direction of the flexible wire 140 as the seat back 12 is tilted forward is applied.

The relay mechanism 16 converts it into a tensile force in the left and right direction.
Since the information was transmitted to the flexible wire 15 of the book, the structure tended to be complicated as a relay mechanism 16 had to be provided, and if a "memory mechanism" was combined, the number of parts would further increase. This was not preferable in terms of ease of assembly and cost of the entire walk-in device.

The present invention was made by focusing on such conventional technology, and the transmission mechanism that connects the reclining device and the locking mechanism is simple in structure and easy to assemble, and the memory mechanism is also combined with the locking mechanism. The purpose is to provide a walk-in device for automobile seats.

Means for Solving the Problems> In order to achieve the above object, the walk-in device for a car seat according to the present invention has a locking mechanism arranged on a reclining device on the outside of the passenger compartment and a slide rail on the central side of the single compartment. This is a walk-in device that allows the lock mechanism and memory mechanism to operate reliably even if they are directly connected with one flexible wire without using a relay mechanism.

That is, in order to connect the reclining device on the outside of the vehicle cabin and the locking mechanism provided on the slide rail on the center side of the vehicle cabin, a double-structured flexible wire that allows the inner wire to slide within the actuator wire is used. Next, the locking mechanism and the reclining device are directly connected, and this double-structured flexible wire is extended perpendicularly to the longitudinal direction of the slide rail, and the actuator wire is connected at the tip of the arm. The reclining device is fixed and a memory mechanism is combined with the locking mechanism to transmit the tensile force from the reclining device in a direction perpendicular to the longitudinal direction of the slide rail.

As a transmission mechanism that connects the reclining device and the lock mechanism, a double-structured flexible wire with an inner wire that can slide within the actuator wire is used, and the lock mechanism combines a memory mechanism with the inner wire of this flexible wire. In addition to directly connecting the actuator wire to the reclining device, the actuator wire is fixed at the end of the arm that extends perpendicularly to the longitudinal direction of the slide rail. The transmitted tensile force is also converted into a direction perpendicular to the longitudinal direction of the slide rail at the tip of the arm, so that the locking mechanism and the memory mechanism can be operated reliably.

In addition, since the actuator wire is fixed at the tip of the arm, even though the direction of the inner wire of the flexible wire is changed (bent) at the tip of the arm, the tensile force can be transmitted smoothly due to the actuator wire intervening. .

EXAMPLES The details of this invention will be explained below based on the drawings. In the following description, the same reference numerals are given to the parts that are common to the conventional one, and redundant description will be omitted.

1 to 9 are diagrams showing one embodiment of the present invention.

A lock plate 17 is fixed to the lower part of the lower rail 2a on the central side A of the single room along its longitudinal direction, and a large number of lock teeth 18 are formed at regular intervals on the edge B of the lock plate 170 on the outside side of the vehicle. . Further, a stand-up walk-in plate 19 on the outside B of the vehicle interior is fixed to the lower part of the lock plate 17.

The front end 20 of the walk-in plate 19 is arranged so that the seat cushion 3 is locked at a predetermined position by a mechanism described later. The operating lever 21 is connected to the lever guide 2 on the outside B of the slide rail 6.
2 and a lever bracket 23 so as to be rotatable. This operating lever 21 is always urged to rotate in the E direction (see FIG. 2) by a return spring 24 mounted on its rear end. A lock 26 with a lock hole 25 that can be selectively engaged with the lock teeth 18 of the lock plate 17 and rotates integrally with the operation lever 21 is provided on the portion of the operation lever 21 supported by the lever bracket 23. It is fixed.

In addition, the operating lever 21 located slightly in front of the lock 26 has a
A hook 27 is fixed, and a release wire 28 is hung through a small hole provided at the tip of the hook 21. This release wire 28 is connected to the opposite side, that is, outside the vehicle interior B.
The slide rail 7 is connected to a sub-lock plate 29 provided on the upper surface of the upper rail 5b.

This sub-lock plate 29 is rotatable left and right about the mounting pin 30, and is constantly pulled toward the outside B of the vehicle interior by a spring 31. Although not shown in the drawings, lock bins are provided on the side of the sub-lock plate 29 on the center side A of the vehicle interior, and when the sub-lock plate 29 rotates toward the outside B of the vehicle interior, a plurality of lock bins are formed in the longitudinal direction of the side of the lower rail 2b. It is designed to selectively engage with a locking hole not shown.

Further, a walk-in bracket 32 is attached to the upper surface of the upper rail 5a near the hook 27. This walk-in bracket 320 has a slide rail 6 facing diagonally upward [see FIGS. 4 to 6] and
A walk-in arm 33 extending in a direction perpendicular to the cross direction (see FIG. 9) and a bent lock attachment portion 34 are formed. Tip 35 of walk-in arm 33
A flexible wire 37, which will be described later, can be fixed with a screw 36 to the holder. Further, a walk-in lock 38 is attached to the Loran attachment portion 34 in a hanging state so as to be freely rotatable back and forth around an attachment pin 39. Furthermore.

A rear portion of the attachment bin 39 of the walk-in lock 38 is formed with a convex portion 40 that protrudes backward. The walk-in lock 38 is always biased by a lock spring 41 so as to rotate the lower end 42 backward, but the walk-in lock 38 is tilted with a gap d between it and the upper edge of the walk-in plate 19. It is said to be a state.

The walk-in lever 43 is rotatably attached to the operation lever 21 at a position adjacent to the walk-in lock 38 in a hanging state. And this walk-in lever 43
The side portion 44 of the above-mentioned seven locks 27 is inserted below, and the side portion 44 has a walk-in lock 3 disposed downwardly.
A notch 45 that can be freely engaged with the convex portion 40 of No. 8 is formed, and a pin 46 for attaching the flexible wire 3T is provided protrudingly. Also, this side part 44 has a two-tiered structure in which the lower side part 44b is slightly rearward than the upper side part 44a. It is said that it is in contact with the And this walk-in lever 43 and walk-in lock 38. The walk-in plate 19 constitutes a "memory mechanism", and this "memory mechanism" includes the lock 26 and the lock plate 17.
It is combined via an operating lever 21 with a "lock mechanism" consisting of.

The flexible wire 37 has a double structure that allows the inner wire 48 to slide within the outer wire 47, and one end is attached to the actuator wire 4 at the tip 35 of the walk-in arm 33 extending perpendicularly to the slide rail 6.
7 is fixed with a screw 36. Only the inner wire 48 is connected to the tip 35 of the walk-in arm 33.
It extends from and is attached to the bin 46 of the walk-in lever 43. The double-structured flexible wire 37 is bent slightly backward at the distal end 35 of the walk-in arm 33 and connected to the reclining device 50 on the outside B of the vehicle interior diagonally backward.

The hinge 49 and the reclining device 50 are attached to the left and right rear portions of the seat cushion frame (not shown), and the reclining device 50 has a device arm 52 for supporting the seat knob 12 attached to the pace plate 51 so as to be rotatable. A reclining lever 53 for operating the seat back 12 forward or backward is attached to the reclining device 50 on the outside B of the vehicle.
Although not shown, the seat back 12 is provided with a coil spring that biases the seat back 12 in the forward direction. A fixing part 54 is formed at the lower end of the base plate 51, and the actuator wire 47 is fixed to the flexible wire 37 from the tip part 35 of the walk-in arm 33 on the opposite side. Only the inner wire 48 extends from the fixing portion 54 and is attached to a pin 155 protruding from the device arm 52. Therefore, the flexible wire 37 between the tip end 35 of the walk-in arm 33 and the fixed part 54 of the reclining device 50.

Although the slide rail 6.7 is stretched diagonally with respect to the longitudinal direction, the inner wire 48 is inserted from the tip end 35.
is connected to the walk-in lever 43 in a direction perpendicular to the longitudinal direction of the slide rail 6.7, and an inner wire 48 is connected to the slide rail 6.7 from the fixed part 54.
7 is connected to the device arm 52 along the longitudinal direction.

Next, the operation of each component of the walk-in device of the present invention will be explained in accordance with the order of actual operation.

Normally, when a passenger is seated, the lock 26 is always urged by the return spring 24 in the direction E in which it engages with the lock l1i18 of the lock plate 17. The whole thing is fixed so that it doesn't move back and forth.

If the occupant wants to slide the seat 1 back and forth to any desired position while seated, he or she can rotate the operating lever 21 in the direction of arrow F (see FIG. 2).

Since the lock 26 fixed to the operating lever 21 also rotates integrally in the direction of arrow F, the engagement between the lock teeth 18 and the lock hole 25 is released, and the seat 1 can be slid to any desired forward or backward position. become. The passenger moves seat 1 to the desired position.
If you let go of the operating lever 21 after sliding it, the return spring 24 will move the operating lever 21 to the arrow E.
The lock 26 automatically engages the lock tooth 18 at that position.

When a rear seat passenger gets into the vehicle To allow passengers sitting in the rear seats to board the vehicle.

First, when the reclining lever 53 of the reclining device 50 is pulled up, the seat back 12 is automatically tilted forward by a coil spring (not shown). As the seat back 12 is tilted forward, the device arm 52 also rotates forward C, so the pin 55 of the device arm 52
The inner wire 48 attached to is pulled.

Therefore, the walk-in lever 43 to which the other end of the inner wire 4B is fixed rotates upward in the direction of arrow F (see FIG. 5).

At this time, the flexible wire 3 is pulled and moved.
7, and the outer wire 41 is fixed at both ends by the tip 35 of the walk-in arm 33 and the fixing part 54 of the reclining device 50.

Actor wire 47 remains fixed without movement. Furthermore, the flexible wire 37 is bent at the fixed tip part 35 and the fixed part 54, but since the actuator wire 41 is fixed, the actuator wire 47 becomes a passage, and the inner wire 48 is smoothly connected to the reclining device 50. It transmits the tensile force from the

As the walk-in lever 43 is rotated upward due to the tension of the inner wire 48, the walk-in lever 4
The upper end of the side portion 44 of No. 3 comes into contact with the lower surface of the hook 27, and the hook 2T is raised and rotated in the direction of arrow F so as to lift the hook 2T (see FIG. 5). Therefore, the operating lever 21 fixed to the hook 2T also rotates in the F direction, and the lock 26 and the lock teeth 18 are disengaged. At the same time, the hook 26 pulls the release wire 28, which rotates the sub-lock plate 29 installed on the opposite slide rail 7 toward the center A of the vehicle interior against the tension of the spring 31. The locked state by the sub-lock plate 29 is also released. Therefore, the seat 1 automatically moves the seat back 12 forward by a help spring (not shown) and begins to slide to the frontmost position.

The tension on the inner wire 48 is maximum when the seat back 12 is tilted forward the most [see Figure 5], and then returns slightly due to the cushioning properties of both the seat back 12 and the seat cushion 3 [see Figure 6]. . Accordingly, the walk-in lever 43 also rotates upward to the maximum in the F direction, but returns slightly to the E direction after the maximum rotation. Walk-in lock 3 momentarily locks when the walk-in lever 43 rotates to the maximum.
8 and the notch 45 of the walk-in lever 43.
corresponds, but at that time, it passes by before it intervenes, and as mentioned above, it is set to go back a little and just correspond.

At the same time, the entire seat 1 is moved to the walk-in lever)
19, the lower end 42 of the walk-in lock 38 rotates backward due to the biasing force of the lock spring 41, and the protrusion 40 of the walk-in lock 38 engages in the notch 45. When the walk-in lock 38 becomes vertical, the walk-in lever 43 is fixed in its rotational position (see FIG. 8). Therefore, the seat 1 becomes completely free in this state and slides to the frontmost position, so that the nine occupants can easily get in and out of the rear seat.

When returning from the frontmost position, after the occupant gets on and off, the seatback 12 is raised to return the seat 1 to its original position and the inner wire 48
Even if the tensile state of
3 into the notch 45 and move the walk-in lever 43 to F.
Since it is fixed in a state where it is rotated upward in the direction,
The seat 1 can be slid rearward D while the seat 1 remains in a free state and the seat back 12 is raised. When the seat 1 is slid backwards D to some extent, the lower end 42 of the quarter-in lock 38 hits the front end 20 of the walk-in plate 19, and the lower end 42 of the walk-in lock 38 rotates forward C and becomes convex. Since the engagement between the portion 40 and the notch portion 45 is released, the walk-in lever 4
The hook 27 supported at the upper end of the side portion 44 of No. 3 begins to rotate along with the operation lever 21 so as to push down the walk-in lever 43. Therefore, the lock 26 fixed to the operation lever 21 engages again with the lock teeth 18 of the lock plate 17, and the release wire 28 connected to the hook 21 and the sub-lock plate 29 installed on the slide rail 7 on the opposite side Since the tension on the sub-lock plate 290 is released, the spring 31 rotates the sub-lock plate 29 toward the outside B of the vehicle interior, and a pin (not shown next time) installed on the side of the sub-lock plate 290 on the central side A of the single room is attached to the side of the lower rail 2b. It engages with a provided locking hole (not shown) and becomes locked again on the slide rail 7 side on the outside B of the vehicle. On the other hand, since the side portion 44 has a two-stage structure, the protrusion 40 of the walk-in lock 38 that is disengaged from the notch 45 is connected to the fork-in lever 4.
After 30 rotations, it once comes into contact with the lower side part 44b, and then is pressed to overcome the step and comes into contact with the upper side part 44a. As the convex portion 40 climbs over this step, the lower end 42 of the walk-in lock 38 further rotates forward C, securing a gap d between the lower end 42 and the upper edge of the walk-in plate 19. This is possible. Securing this gap d prevents contact and sliding between the walk-in lock 38 and the walk-in plate 19 when the seat 1 slides back and forth, and prevents the generation of sliding noise and wear. be. As explained above, due to the structure, the relocking position of the seat 1 is determined at the front end 20 of the walk-in plate 19, and the relocking position is determined by a normal adult. The seats are set at an average position that allows you to sit naturally.

In addition, in the above description, the flexible wire 37 has an outer wire 47 arranged from the fixed part 54 of the reclining device 50 to the tip part 35 of the fork arm 33.
Actor wire 47 is at least flexible wire 37
Only the fixed part 54 and the tip part 35 that are bent are sufficient, and the part between the fixed part 54 and the tip part 35 may be omitted.

(Effects) The walk-in device for a car seat according to the present invention has the content as described above, and since there is no need to provide a relay mechanism or the like with a complicated structure, the overall structure is simplified accordingly.

Since the number of parts is reduced, assembly work becomes easier, and it is also advantageous in terms of cost. Furthermore, since the structure is simple, operational reliability is improved at the same time, and half-locking of the locking mechanism and memory mechanism, catching in the transmission mechanism, etc. are prevented, and smooth and reliable operation can be performed at all times.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a walk-in device showing an embodiment of the present invention. FIG. 2 is an enlarged perspective view of the slide rail on the center side of the passenger compartment. FIG. 5 is an enlarged sectional view taken along the arrow m-z line in FIG. 2. 4 is a side view including a partial sectional view taken along the arrow IV-N line in FIG. 2; FIG. Figure 5 shows the fourth case where the inner wire is pulled to the maximum.
A side view corresponding to the figure. FIG. 6 is a side view corresponding to FIG. 4, showing a state in which the protrusion of the fork-in lock is engaged with the notch of the walk-in lever. FIG. 7 is a side view seen from the direction indicated by the arrow ■ in FIG. 4. FIG. 8 is a side view seen from the direction indicated by the arrow ■ in FIG. 6. FIG. 9 is a plan view seen from the direction indicated by the arrow ■ in FIG. 4. and. FIG. 10 is an overall perspective view of a walk-in device corresponding to FIG. 1, showing a conventional example of the present invention. 1... Seat 2ae 2b... Lower rail 3... Seat cushion 5a, 5b... Upper rail 6.7
... Slide rail 8 ... Lock mechanism 11.50 ... Reclining device 12
... Seat back 14.15.37... Flexible wire 33
...Walk-in arm 35...
- Tip part 41 ... Outer wire 48 ... Inner wire Fig. 3 Fig. 5 Fig. 6 Fig. 7 Fig. 8

Claims (1)

[Scope of Claims] A pair of left and right slide rails in which a pair of left and right upper rails fixed to the seat cushion side are attached to each of a pair of left and right lower rails fixed to the vehicle body side so as to be slidable back and forth, and a seat cushion to the seat cushion. A reclining device placed on the outside of the seat to support the seatback so that it can be tilted forward; a locking mechanism attached to the slide rail in the center of the passenger compartment to allow the upper rail to be freely engaged and removed at any position on the lower rail; and a locking mechanism. a transmission mechanism that connects the locking mechanism and the reclining device with a flexible wire in order to transmit the tensile force caused by tilting the seatback forward to the locking mechanism in order to release the lock and slide the seat cushion to the frontmost position; An automobile seat comprising: a memory mechanism that is combined with a mechanism and a transmission mechanism and that locks a locking mechanism at a predetermined position when the seatback is raised and the entire seat is slid rearward from the frontmost position; In this walk-in device, the transmission mechanism uses a double-structured flexible wire that allows the inner wire to slide within the outer wire, and one end of the double-structured flexible wire is crossed at right angles to the longitudinal direction of the slide rail. A walk-in device for an automobile seat, characterized in that an outer wire is fixed at the tip of a walk-in arm extending in the direction, and a locking mechanism combined with a memory mechanism and a reclining device are directly connected by an inner wire.