JP2012140075A - Seat frame and retractable seat for vehicle equipped with seat frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat frame and a retractable seat for a vehicle for easy storing operation, with high assembly workability.SOLUTION: A seat frame F provided to a vehicle retractable seat S in which a seat frame 4 and a seat back frame 5 are stored in folded state includes a reclining mechanism 10, a seat slide mechanism 20 for sliding the seat frame 4, a slide lock mechanism 30 which is interlocked with the reclining mechanism 10 to prohibit or permit operation of the seat slide mechanism 20, a striker lock mechanism 70, and an assist mechanism 50 for assisting storing operation and restoring operation of the vehicle retractable seat S. The seat slide mechanism 20 includes a lower rail 21, an upper rail 22, and a slide energizing member 23 which is interlocked with the tilting motion of the seat back frame 5 down to a predetermined angle when storing the vehicle retractable seat S, for automatically sliding the upper rail 22. The seat slide mechanism 20 and the slide lock mechanism 30 are attached to the seat frame 4.

Description

  The present invention relates to a seat frame and a vehicular storage seat including the seat frame, and in particular, a seat frame having high assembling workability and good operability during storage operation, and a vehicular storage seat including the seat frame. About.

  2. Description of the Related Art Conventionally, there is known a vehicle storage seat that can be shifted between a normal use state and a state in which a seat back is tilted forward and stored in a storage recess of a vehicle body floor. With respect to such a part for storing the storage seat for the vehicle, the storage recess is formed on the vehicle body floor in front of the storage seat for the vehicle (for reasons such as vehicle design and securing of storage space for luggage, etc.). That is, it may be provided in front of the lower part of the vehicle storage seat.

  In such a case, the upper rail and the lower rail can be stored smoothly in the storage recess without hooking the storage seat for the vehicle to another article or member (for example, the seat arranged in the front row or the side wall of the storage recess). There is known a technique in which the seat is slidable in the front-rear direction by assembling, and the seat is slid back before storage and then flipped up and stored (for example, Patent Document 1).

JP 2009-196422 A

  The storage seat for a vehicle of Patent Document 1 is provided with a seat slide device, and this slide device has a configuration in which a slide lock mechanism is appropriately released in conjunction with the seat slide mechanism. Therefore, when the seat is stored, the operation of sliding the seat backward can be easily performed.

  However, since the configuration for performing the slide operation is configured by combining a plurality of parts, the configuration is complicated and there is a disadvantage that the assembling work becomes complicated. In addition, if the configuration for sliding the storage seat for a vehicle to a retractable position is assembled separately on the vehicle body floor side and the seat side, the mounting workability is reduced, so a technology with higher mounting workability is desired. It was rare. Further, when storing the seats, it is necessary to perform the operation mainly manually, and a technique that can more easily perform the operation of sliding the storage seat for the vehicle to a position where it can be stored (that is, the rearmost position) is desired. It was.

  Furthermore, when the vehicle storage seat is rotated and stored, it is necessary to store the seat after sliding it to an appropriate position. However, when the seat is manually slid, it can be slid to the appropriate position. In some cases, the storing operation could not be performed smoothly. Therefore, there has been a demand for a technique capable of easily and surely sliding the vehicular storage seat to a retractable position and smoothly performing the storage operation.

  Accordingly, an object of the present invention has been made in view of the above-described problems, and has a seat frame that has high assembling workability and that can be easily stored, and a vehicular seat that includes the seat frame. Is to provide. Another object of the present invention is to provide a seat frame capable of easily and reliably sliding a vehicle storage seat to a retractable position, and a vehicle storage seat including the seat frame. is there.

  According to the seat frame of the first aspect of the present invention, the seat frame provided in the vehicle storage seat stored on the vehicle body floor when the seating frame and the seat back frame are flipped up in a folded state. A reclining mechanism that supports the seat back frame so as to be tiltable with respect to the seating frame, a seat slide mechanism that slides the seating frame in the front-rear direction, and a seat slide mechanism that operates in conjunction with the reclining mechanism. A slide lock mechanism that prohibits or permits operation, a striker lock mechanism that locks a rear portion of the seating frame on the vehicle body floor and restricts rotation of the storage seat for the vehicle, a storage operation of the storage seat for the vehicle, and An assist mechanism for assisting the return operation, The idling mechanism includes a lower rail that extends in the front-rear direction of the vehicle body, an upper rail that is slidably engaged with the lower rail, and the seat back frame that is positioned at a predetermined angle by the reclining mechanism when the storage seat for the vehicle is stored. A slide urging member that automatically slides the upper rail in conjunction with the tilting motion, and the seat slide mechanism and the slide lock mechanism are attached to the seating frame. It is solved by.

As described above, in the seat frame provided in the vehicle storage seat that is stored in a state in which the seating frame and the seat back frame are folded, the seat slide mechanism is provided with the slide biasing member, so that the seating frame can be moved with respect to the lower rail. Can be automatically slid. Therefore, the storing operation can be performed more easily. Further, since the slide position change amount is determined by the slide urging member, the seating frame can be reliably slid to a position suitable for the storing operation.
Since such a seat slide mechanism and a slide lock mechanism for controlling the operation of the seat slide mechanism are attached to the seating frame, when the seat frame is attached to the vehicle body floor, the assembly work of the seat slide mechanism and the like is complicated. Never become. Since the seat frame configured as described above is integrated with the lower rail, it can be easily assembled to the vehicle body floor by simply locking the lower rail to the vehicle body floor. Therefore, when the vehicle storage seat that can automatically slide to the storage position is attached to the vehicle body floor, the attachment operation can be performed with good workability.

At this time, as described in claim 2 of the present invention, it is further provided with an interlock mechanism that is provided separately from the striker lock mechanism and restricts the jumping of the seat frame, and one end of the slide biasing member is connected to the interlock It is preferable to be locked to the mechanism.
In this way, by attaching the slide urging member to a part of the interlock mechanism, there is no need to separately provide a member for attaching the slide urging member. Since the attaching work of the urging member can be performed, the assembling workability of the storage seat for a vehicle can be further improved.
The interlock mechanism is disposed at a position that is a starting point when the vehicle storage seat is flipped up and stored. And in order to avoid buffering with the other member arrange | positioned in the vehicle, the storage seat for vehicles is stored, after sliding to the part side in which the interlock was arrange | positioned in many cases. Therefore, among other members, in particular, by locking one end of the slide urging member to the interlock mechanism, the vehicular storage seat can be urged and slid to the side where the interlock mechanism is installed. It becomes possible. As a result, the seating frame can be reliably slid to the storage position, and the storage operation can be performed more easily.

Further, at this time, as in claim 3 of the present invention, it further comprises a link mechanism that adjusts an angle between the seating frame and the seat back frame, and the link mechanism is configured to move the upper rail during the sliding operation. It is more preferable that the configuration is such that the inclination angle of the seat back frame is maintained.
With such a configuration, the seat back frame is held without being tilted while the upper rail, that is, the seating frame is slid. As described above, since the seating frame slides while maintaining the inclination angle of the seat back frame at the start of sliding, the storage seat for the vehicle can be stably slid to the retracted position without vibration. . Therefore, it is possible to more reliably slide the vehicular storage seat to a position suitable for storage.

  According to the vehicle storage seat of claim 4 of the present invention, the vehicle includes at least a seat frame, a cushion material placed on the seat frame, and a skin material covering them. The seat frame is solved by using the seat frame according to any one of claims 1 to 3.

  As described above, the storage seat for a vehicle provided with the seat frame having the above-described configuration includes a seat slide mechanism and a slide lock mechanism that are integrally assembled with the seat frame in the seat frame. Good properties. Further, since the seat slide mechanism includes a slide urging member that slides the seating frame, the vehicular storage seat can be automatically slid to an appropriate position.

According to the seat frame of the first aspect, by providing the slide urging member, the seating frame can be easily and surely guided to the proper storage position. As a result, the storing operation can be performed smoothly. Further, since the seat slide mechanism and the slide lock mechanism are integrally provided, it is possible to provide a seat frame with good workability at the time of assembling work on the vehicle body floor.
According to the seat frame of the second aspect, since the slide urging member is attached to the striker lock mechanism, the assembly work location is concentrated when the vehicle storage seat is assembled, so that the assembly work can be performed more efficiently. it can. In addition, it is possible to provide a seat frame that can be stored easily and reliably.
According to the seat frame of the third aspect, since the storage seat for the vehicle slides stably, it is possible to provide a seat frame that can be reliably slid to the storage position.
According to the storage seat for a vehicle according to claim 4, as described above, the storage seat for a vehicle that can perform the storage operation smoothly and has good workability when assembled to the vehicle body floor is provided. be able to.

It is a side surface schematic diagram of the vehicle rear part carrying the storage seat for vehicles concerning one embodiment of the present invention. It is a front perspective view of the storage seat for vehicles concerning one embodiment of the present invention. 1 is a schematic perspective view of a seat frame according to an embodiment of the present invention. It is a schematic perspective view which shows the slide biasing member periphery which concerns on one Embodiment of this invention. (A) It is explanatory drawing of the locked state of the slide lock mechanism which concerns on one Embodiment of this invention. (B) It is a schematic sectional drawing equivalent to the AA line of Fig.5 (a). (A) It is explanatory drawing of the lock release state of the slide lock mechanism which concerns on one Embodiment of this invention. (B) It is schematic sectional drawing equivalent to the BB line of Fig.6 (a). (A) It is explanatory drawing of the re-locking state of the slide lock mechanism which concerns on one Embodiment of this invention. (B) It is a schematic sectional drawing equivalent to CC line of Fig.7 (a). It is a schematic explanatory drawing of the interlock mechanism which concerns on one Embodiment of this invention. It is explanatory drawing which shows the relationship between the folding angle of the storage seat for vehicles which concerns on one Embodiment of this invention, and the effect | action by each mechanism. It is operation explanatory drawing at the time of storing operation of the storage seat for vehicles concerning one Embodiment of this invention. It is operation explanatory drawing at the time of the return operation of the storage seat for vehicles which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. However, members, arrangements, and the like described below are not intended to limit the present invention, and various modifications can be made in accordance with the spirit of the present invention, and of course, equivalents thereof are included.
In the following description, the second row of seats divided on the left and right sides of the vehicle will be described as a specific example, but the present invention is not limited to this, and a long bench-type seat, a passenger seat, and other rear seats that are integrally formed. Of course, the same configuration can be applied.

1 to 11 are diagrams showing an example of an embodiment according to the present invention.
1 is a schematic side view of a rear portion of a vehicle on which a vehicle storage seat is mounted, FIG. 2 is a front perspective view of the vehicle storage seat, FIG. 3 is a schematic perspective view of a seat frame, and FIG. 5A is an explanatory diagram of the locked state of the slide lock mechanism, FIG. 5B is a schematic cross-sectional view corresponding to the AA line of FIG. 5A, and FIG. FIG. 6B is a schematic cross-sectional view corresponding to the line BB in FIG. 6A, and FIG. 7A is an explanatory view of the slide lock mechanism in the relocked state. 7 (b) is a schematic cross-sectional view corresponding to the line C-C in FIG. 7 (a), FIG. 8 is a schematic explanatory view of an interlock mechanism, and FIG. 9 is a folding angle of a vehicular storage seat and an action by each mechanism. FIG. 10 is an operation explanatory diagram at the time of storing operation of the vehicle storage seat, FIG. An operation explanatory diagram when returning operation for storing seat vehicle.
In the following description, the front side of the vehicle is referred to as the front, and the rear side is referred to as the rear.

<< Overview of Vehicle Storage Seat of This Embodiment >>
First, a storage seat for a vehicle according to the present embodiment (hereinafter referred to as the present seat S) will be described with reference to FIGS.
The vehicle equipped with the seat S includes two rows of seats in the front and rear, and is configured to be able to store the second row (rear side) seats. The seat S is configured to be slidable in a moving direction (a direction indicated by an arrow in FIG. 1) along the traveling direction of the vehicle.

  Further, the seat S can be folded by rotating the seat back 2 with respect to the seating portion 1, and in the folded state, the seat S rotates in the forward direction with respect to the traveling direction of the vehicle. It is configured to be stored on the floor D. In addition, the vehicle body floor D has a level | step difference, and the position (at the time of normal use) where this sheet | seat S is arrange | positioned is formed one step higher than the position stored. Therefore, by storing the main sheet S forward, a flat luggage compartment can be secured between the back surface of the seat back 2 and the position where the main sheet S is disposed.

  The seat S is disposed on the vehicle body floor D and includes a seating portion 1, a seat back 2, and a headrest 3, as shown in FIGS. Further, a reclining release lever 11 for releasing reclining of the seat S is disposed below the seat back 2 (in other words, behind the seating portion 1). Note that the reclining release operating means may be configured as a string or strap instead of the lever shown in the present embodiment. The seat S is formed by placing (mounting) a cushion material on a seat frame described below and covering it with a skin.

  The seat frame F of the seat S shown in FIG. 3 includes a seating frame 4 that constitutes the seating portion 1 and a seatback frame 5 that constitutes the seatback 2. In addition, a pillar support portion 5a is formed on the upper portion of the seat back frame 5 so that a pillar that supports a headrest (not shown) can be inserted.

The seating frame 4 constitutes the seating portion 1, and the upper part of the seating frame 4 is covered with a cushion pad, a skin material, etc. as a cushioning material, and supports the occupant from the lower part.
The front side of the seating frame 4 is supported so as to be rotatable with respect to the vehicle body floor D in the longitudinal direction of the vehicle. On the rear side of the seating frame 4, an interlock mechanism 40 and a striker lock mechanism 70 are provided. The seating frame 4 is locked to a striker 41 (see FIG. 8) on the vehicle body floor D side via a striker lock mechanism 70 provided with a latch 72. The striker lock mechanism 70 is operated by the latch 72 and the striker 41. It is configured so that it can be released by a lever or the like.
The interlock mechanism 40 is a mechanism that prevents the seat from jumping up to the rearmost position (rearmost) even when the seat lock is released by the striker lock mechanism 70.

  The seating frame 4 includes a bottom plate 6 that defines the bottom of the seating frame 4, and side brackets 8 and 8 that are spaced apart from each other and face each other, and a connecting member that connects the side brackets 8 and 8. 7. Between the one side bracket 8 and the side plate 5b of the seat back frame 5, an installation plate 9 for connecting them is disposed. The side brackets 8 and 8 are respectively provided with seat slide mechanisms 20 and 20 at the bottom thereof, and are moved in the front-rear direction in conjunction with the operation of the seat back 2 via the reclining mechanism 10 and the seat slide mechanism 20 described later. It is configured to be movable. The configuration of the seat slide mechanism 20 will be described in detail below.

The seat back frame 5 constitutes the seat back 2 that is covered with a cushion pad or the like and supports the back of the passenger from behind. The seat back frame 5 is connected to the seating frame 4 via a reclining mechanism 10.
The seat back 2 can be rotated with respect to the seating portion 1 by the reclining mechanism 10. In the present embodiment, as the reclining mechanism 10, a known mechanism that releases the locking of the rotation of the seat back 2 by operating the reclining release lever 11 is used.

<< Each mechanism provided in this sheet S >>
The seat S is provided with a reclining mechanism 10, a seat slide mechanism 20, a slide lock mechanism 30, an interlock mechanism 40, an assist mechanism 50, a link mechanism 60, and a striker lock mechanism 70. .
The reclining mechanism 10 is a mechanism that supports the seat back frame 5 of the seat S so as to be tiltable with respect to the seating frame 4. The seat slide mechanism 20 is a mechanism that moves the upper rail 22 relative to the lower rail 21 to slide the seat S in the front-rear direction of the vehicle. The slide lock mechanism 30 prohibits or allows the operation of the seat slide mechanism 20 in conjunction with the reclining mechanism 10 and releases the slide lock of the seat slide mechanism 20 in accordance with the timing at which the seat back frame 5 of the seat S tilts. To do.
Furthermore, the interlock mechanism 40 locks the main sheet S on the striker 41 of the vehicle body floor D, and restricts the main sheet S from separating from the vehicle body floor D and rotating forward. The assist mechanism 50 is a mechanism that assists the returning operation and the storing operation of the sheet S. The link mechanism 60 is a mechanism that is provided at a position facing the reclining mechanism 10 and that appropriately adjusts the angle between the seating frame 4 and the seat back frame 5 in conjunction with the reclining mechanism 10. The striker lock mechanism 70 is a mechanism for locking the rear portion of the lower rail of the seat slide mechanism 20 to the vehicle body floor D.

<Recliner mechanism 10>
The reclining mechanism 10 has a function of connecting the seat frame 4 to the rear side of the vehicle body and the lower side of the seat back frame 5 to support the seat back frame 5 so as to be tiltable with respect to the seat frame 4. The reclining mechanism 10 includes a reclining release lever 11 and a spiral spring 12 that urges the seat back frame 5 forward.
One end of the reclining release lever 11 is pivotally supported on the seat frame F side, and when the other end is rotated upward, the reclining mechanism 10 is unlocked and the seat back frame 5 can tilt. It becomes. As the configuration of the reclining mechanism 10 that arbitrarily adjusts the inclination angle of the seat back frame 5 in this manner, a known configuration can be used.

<Sheet slide mechanism 20>
The seat slide mechanism 20 includes a lower rail 21 extending in the front-rear direction of the vehicle body, an upper rail 22 that is slidably engaged with the lower rail 21, and a slide biasing member 23 that automatically slides the upper rail 22 rearward. And is attached below the seating frame 4. When the seat S is stored, the seat frame 4 (more specifically, the upper rail 22) is automatically slid rearward in conjunction with the movement of the seat back frame 5 tilted to a predetermined angle by the reclining mechanism 10. The main members of the seat slide mechanism 20 are a lower rail 21 extending in the front-rear direction of the vehicle body, an upper rail 22 slidably engaged with the lower rail 21, and a slide that automatically slides the upper rail 22 rearward. And an urging member 23. A known configuration can be used as the configuration in which the lower rail 21 and the upper rail 22 slide relative to each other. Further, since the seat slide mechanism 20 has the same configuration in the left and right side brackets 8 and 8, an arbitrary one side (side on which the reclining release lever 11 is attached) will be described.

  The lower rail 21 is arranged on the vehicle body floor D and fixed by a striker 41 on the vehicle body floor D by a striker lock mechanism 70, and the upper rail 22 is slidably attached. The upper rail 22 is fixed to the bottom wall 8c of the side bracket 8 on an upper surface 22a formed substantially horizontally. Therefore, when the upper rail 22 slides with respect to the lower rail 21, the seating frame 4 and the seat back frame 5 provided above the upper rail 22 slide in the same direction as the upper rail 22. The side bracket 8 is formed in a substantially U shape in front view including an outer wall 8a and an inner wall 8b in addition to the substantially horizontal bottom wall 8c. A flange portion 8d extends from the upper end of the outer wall 8a.

  The slide urging member 23 corresponds to a slide urging member provided in the seat slide mechanism 20 of the present invention, and automatically slides the upper rail 22 along the longitudinal direction of the seating frame 4. It is disposed inside the side bracket 8. One end of the slide urging member 23 is fixed to a frame side bracket 24 attached to the front end of the side bracket 8 to which the upper rail 22 is joined, and the other end is fixed to the seat S. Is in a normal use state (that is, when the occupant is seated), the slide biasing member 23 is stretched with a certain strength and is locked to a part of the members constituting the interlock mechanism 40 described later. ing. The interlock mechanism 40 is a mechanism that restricts the flip-up operation of the seat S, and is attached to the rear end of the lower rail 21. In the present embodiment, the striker lock mechanism 70 and the lower rail 21 are disposed.

  As the slide biasing member 23, a member such as a spring or rubber can be used. Moreover, you may use electrical components, such as a motor. The slide urging member 23 is locked along the extending direction of the lower rail 21 and the upper rail 22 in a stretched state when the seat S is in a normal use state. 24 is urged to slide backward. That is, the slide urging member 23 urges the seating frame 4 of the seat S to slide backward.

  However, in a normal use state where an occupant is seated, sliding of the lower rail 21 and the upper rail 22 is prohibited by a slide lock mechanism 30 described later, so that the seat S does not slide and holds an appropriate position. Yes. Then, the slide lock mechanism 30 operates so as to release the prohibition of the slide, and when the lock of the seat slide mechanism 20 is released, the slide biasing member 23 contracts toward the rear of the seat S, so that the upper rail 22 As a result, the upper part of the seat S finally slides backward from the seating frame 4.

  The slide biasing member 23 may be attached to both the left and right side brackets 8 and 8 of the seating frame 4 or may be attached to one side brackets 8 and 8. The number of slide urging members 23 is appropriately determined depending on the weight of the sheet S and the like.

<Slide lock mechanism 30>
The slide lock mechanism 30 of the present embodiment appropriately releases the slide lock of the seat slide mechanism 20. The member that drives the slide lock mechanism 30 is linked to the reclining mechanism 10 described above, and is divided into a portion that is disposed on the seat back frame 5 and a portion that engages with the lower rail 21 and the upper rail 22. These mechanisms are connected by a rod-shaped member 31.

  Then, when the rod-shaped member 31 is pulled to the rear side of the vehicle body depending on the tilting operation of the seat back frame 5, the portion that engages the lower rail 21 and the upper rail 22 of the slide lock mechanism 30 by the movement of the rod-shaped member 31. However, the seat slide mechanism 20 is configured to be unlocked.

  On the other hand, when the rod-shaped member 31 is pushed forward of the vehicle body depending on the tilting operation of the seat back frame 5, the rod-shaped member 31 is engaged with the lower rail 21 and the upper rail 22 of the slide lock mechanism 30. The portion to be configured is configured to lock the seat slide mechanism 20.

This will be specifically described below.
FIG. 5 shows a state before the seat back frame 5 is tilted (that is, a state in which an occupant is seated). In the seat S, one end of the interlocking plate 32 is locked to the seatback frame 5, and the interlocking plate 32 is locked substantially parallel to the side plate 5 b of the seatback frame 5. The interlocking plate 32 is a plate-like member formed in a substantially bowl shape, and transmits the movement of the seat back frame 5 to a lock release plate 36 described later.

As the configuration for transmitting the movement of the interlocking plate 32 to the lock release plate 36, a known configuration can be used as appropriate. An example will be described with reference to the drawings.
The first surface 32a provided at the upper end of the interlocking plate 32 is joined to the seat back frame 5, while the lower end of the interlocking plate 32 (third surface 32c) is formed with appropriate irregularities. Further, a second surface 32b is provided between the first surface 32a and the third surface 32c so as to extend substantially perpendicular to the first surface 32a and the third surface 32c. The recess 32d of the interlocking plate 32 engages with a collar 33a protruding from a cancel lever 33 disposed below (see FIG. 5A), and the movement of the seat back frame 5 is applied to the cancel lever 33. introduce.

  The cancel lever 33 is a small piece having protrusions 33b and 33c, and the lower end thereof is locked to the rail release lever 34 by a locking member (not shown). The protrusion 33b abuts against the flange 9a bent from the edge of the erection plate 9 and adjusts its position.

  The rail release lever 34 locked to the cancel lever 33 is a plate piece formed in a substantially bowl shape, and one end of an urging member 34b is attached to a protrusion 34a protruding forward. The other end of the urging member 34 b is attached to a bracket 35 that is horizontally mounted on the erection plate 9.

  The rail release lever 34 has one end side (an end portion disposed above) formed in a substantially circular shape, and engages with a substantially circular protruding portion 9b formed in a part of the installation plate 9, The movement of the rail release lever 34 is restricted. On the other hand, one end of the rod-shaped member 31 and the wire cable W is locked to the lower end portion of the rail release lever 34.

  Hereinafter, the slide lock mechanism 30 provided on the lower rail 21 and the upper rail 22 side will be described. The rod-shaped member 31 whose one end is locked to the rail release lever 34 is pivotally supported on the connecting plate 31b by the shaft member 31a at the other end. The connecting plate 31b has a rod-like member 31 pivotally supported at one end thereof, and the connecting shaft 31c is inserted and locked at the other end thereof.

  The connecting shaft 31 c is disposed through the outer wall 8 a of the side bracket 8, the connecting plate 31 b, the lock release plate 36, the release plate urging member 37, and the inner wall 8 b of the side bracket 8. The unlocking plate 36 has a connecting shaft 31c inserted through its upper end, and a lower end formed in the release plate insertion hole 8e formed in the bottom wall 8c of the side bracket 8 and the upper surface 22a of the upper rail 22. And the release plate insertion hole 22b.

  Further, the lock release plate 36 has a hole 36a through which one end of the release plate urging member 37 is inserted in the vicinity of the portion through which the connecting shaft 31c is inserted. The release plate urging member 37 can use a coil spring or the like, and the end of the release plate urging member 37 that is not inserted through the lock release plate 36 contacts the bottom wall 8 c of the side bracket 8. It is arranged like this.

  The release plate urging member 37 is provided to change the relative position between the bottom wall 8c of the side bracket 8 and the lock release plate 36 as the connecting shaft 31c moves. One end of the release plate urging member 37 is in contact with the bottom wall 8c of the side bracket 8 and the other end is engaged with the lock release plate 36. Therefore, the position of the lock release plate 36 is adjusted by the urging force. Can be controlled.

The lower end of the lock release plate 36 is disposed above the lock member 38.
The lock member 38 is a plate-like member attached to the inner side of the upper rail 22 via an attachment bracket 39. The locking member 38 is formed with a locking hole 38 a on one end side, and the locking hole 38 a is locked to a claw portion 39 a formed on the mounting bracket 39. The mounting bracket 39 is a member formed in a cross-sectional shape along the inner surface of the upper rail 22, and the claw portion 39a faces the inner side of the upper rail 22 (the portion surrounded by the upper surface 22a and the side surface 22c). Projecting.

  The protrusion 21a formed on the lower rail 21 is a continuous protrusion formed at the end of the winding portion of the lower rail 21, and can be locked to the locking hole 38b to lock the slide of the upper rail 22. . Since the lock member 38 is urged in a direction to be pushed up by an urging spring (not shown), the protrusion 21a and the locking hole 38b are engaged with each other when the lock member 38 is not pressed against the lower end of the lock release plate 36. It is held in the state.

  Then, when the lock release plate 36 is pushed down with respect to the upper surface of the lock member 38, the intermediate portion of the lock member 38 is pushed down as shown in FIG. 6B, and the lower rail 21 and the upper rail 22 are locked. To release.

Hereinafter, the operation of the slide lock mechanism 30 will be described with reference to FIGS.
FIG. 5 shows a state in which the lower rail 21 and the upper rail 22 are locked. FIG. 5A is an explanatory diagram of a state in which the lower rail 21 and the upper rail 22 are locked, and FIG. The cross-sectional schematic diagram equivalent to the AA line of the state in which 21 and the upper rail 22 are locked is shown.

  In a state where the lower rail 21 and the upper rail 22 are locked, the rod-shaped member 31 is not pulled, so that the lock release plate 36 does not contact the upper side of the lock member 38. For this reason, the protrusion 21a of the lower rail 21 and the locking hole 38b of the lock member 38 are held in mesh with each other, and the lower rail 21 and the upper rail 22 cannot slide with respect to each other.

  6 shows a state in which the lock of the seat slide mechanism 20 is released, and FIG. 6 (a) is an explanatory diagram of a state in which the lower rail 21 and the upper rail 22 are unlocked, FIG. 6 (b). Fig. 2 shows a schematic cross-sectional view corresponding to line BB in a state where the lower rail 21 and the upper rail 22 are unlocked.

  As shown in FIG. 6, when the reclining release lever 11 is operated and the seat back frame 5 is tilted by the reclining mechanism 10, the upper end of the interlocking plate 32 tilts forward along with the seat back frame 5, and the cancel lever 33, the rail release lever 34 tilts, and the bar-like member 31 locked to the lower end of the rail release lever 34 is pulled backward.

  On the other hand, as shown in FIG. 3, a spiral spring 61 that is a part of the link mechanism 60 is attached to the side bracket 8 on the side where the reclining release lever 11 is not attached. When the reclining release lever 11 is operated, the tilting speed of the seat back frame 5 is reduced by the reaction force of the spiral spring 61.

  When the rod-shaped member 31 is pulled rearward, the movement is sequentially transmitted to the connecting plate 31b and the connecting shaft 31c disposed on the lower rail 21 and upper rail 22 side, and the unlocking plate biasing member 37 is used to release the lock releasing plate. 36 is pushed downward.

  That is, in a state where the lower rail 21 and the upper rail 22 are unlocked, the lock release plate 36 rotates because the rod-shaped member 31 is pulled, and the lower end portion of the lock release plate 36 is pushed downward. Therefore, the engagement between the protrusion 21a of the lower rail 21 and the locking hole 38b of the lock member 38 is released, and the sheet S can be slid.

  When the seat S can be slid, the upper rail 22 is freely slidable with respect to the lower rail 21, so that the slide urging member 23 provided in the slide mechanism 20 is allowed to contract. . One end of the slide urging member 23 is attached to the front end portion of the upper rail 22, and the other end portion is locked to a part of the interlock mechanism 40 disposed behind the seat S. Therefore, when the slide mechanism 20 is unlocked, the seating frame 4 is automatically moved rearward by the biasing force of the slide biasing member 23.

  Thereafter, when the seat back frame 5 is further tilted and the interlock mechanism 40 disposed at the rear of the seat S is released, the seat S is flipped up from the rear, and the vehicle floor D Stored in

  Therefore, when the reclining release lever 11 is pulled up, the seat back frame 5 is tilted to a predetermined angle, and the seating frame 4 is automatically moved backward by the slide urging member 23. At this time, the link mechanism 60 does not tilt the seat back frame 5 and the angle formed with the seating frame 4 is fixed. Thus, by sliding the seating frame 4 with the angle of the seat back frame 5 fixed, the seating frame 4 can be reliably moved to the end with a more stable operation.

  Further, even if the lower rail 21 fixed by the striker 41 on the vehicle body floor D is unlocked by the striker lock mechanism 70, the seat S is not flipped up. The seat frame 4 is moved to the position where the interlock mechanism 40 is released by the slide biasing member 23, that is, the position optimal for storing (the rearmost position: rearmost). Can be performed efficiently.

  Further, the seat S is provided with all the mechanisms for automatically sliding the seat (the reclining mechanism 10, the seat slide mechanism 20, the slide lock mechanism 30, the interlock mechanism 40, the striker lock mechanism 70) on the seat side. Therefore, at the time of assembly work, the work is not complicated and workability is improved.

  Further, FIG. 7 shows a state in which the seat back frame 5 is further tilted and the seat slide mechanism 20 is re-locked. FIG. 7A shows a state in which the lower rail 21 and the upper rail 22 are re-locked. FIG. 7B is a schematic cross-sectional view corresponding to line CC in a state where the lower rail 21 and the upper rail 22 are re-locked.

  As shown in FIG. 7, when the seat back frame 5 is further tilted from the state of FIG. 6 (locked state), the upper end of the interlocking plate 32 is further tilted forward along with the seat back frame 5. As a result, the cancel lever 33 is pushed back to the normal state (state when the occupant is seated) as shown in FIG. 5, the lower end portion of the cancel lever 33 is lifted upward, and the protrusion 33 b is It is pressed against the flange portion 9a. Along with this, the rail release lever 34 is also brought into a normal state, and the rod-like member 31 locked to the lower end portion of the rail release lever 34 is pushed back from the state of FIG. Return to the state of not being pulled backward.

  When the rod-shaped member 31 is pushed forward as compared with the locked state, the movement is sequentially transmitted to the connecting plate 31b and the connecting shaft 31c disposed on the lower rail 21 and upper rail 22 side, and the release plate biasing member The unlocking plate 36 is pulled upward by the force of 37.

  That is, in a state where the lower rail 21 and the upper rail 22 are re-locked, the lower end portion of the lock release plate 36 is pulled up above the lock member 38. For this reason, the protrusion 21a of the lower rail 21 and the locking hole 38b of the lock member 38 are brought into mesh again, and the slide of the sheet S is locked.

  Hereinafter, among the mechanisms provided in the seat S, the striker lock mechanism 70, the interlock mechanism 40, the assist mechanism 50, and the link mechanism 60 will be outlined.

<Striker lock mechanism 70>
On the other hand, the striker lock mechanism 70 of the present embodiment has a receiving jaw for holding the striker 41 on the basis of two opposing side plates 71 provided with downward U-shaped receiving holes for receiving the striker 41 as shown in FIG. The hook-shaped latch 72 having the cam 72 and the cam-shaped ratchet 73 for latching the latch 72 are pivotally mounted within the space between the side plates 71 by the support shafts 72b and 73a. The striker lock mechanism 70 is assembled so that the striker 41 can be locked and unlocked by providing a latching projection (not shown) on the latch 72 and a receiving projection (not shown) on the ratchet 73 to engage and disengage each other. ing.

  The latch 72 is biased by a torsion coil spring (not shown) in both the holding direction of the striker 41 and the releasing direction. The ratchet 73 is spring tensioned in a direction in which the ratchet 73 is engaged with the latch 72 by a coil spring 74 that extends between the ratchet 73 and the latch 72. In addition, a buffer pad 75 at the time of holding the striker 41 is attached and fixed to the outside of the side plate 71 on the back side of the receiving port. Further, a swinging piece for connecting the wire ends of the pulling wire is attached on the same axis as a support shaft 73 a for bearing the ratchet 73.

As shown in FIG. 4, the striker lock mechanism 70 is configured such that when the ratchet 73 is pulled against the coil spring 74 by a lever operation (not shown) by a not-shown lever, the ratchet 73 swings around the support shaft 73a. At the same time, the catching projection of the ratchet 73 is disengaged from the latching projection of the latch 72, and the latch 72 is unlocked by swinging from the striker 41 by the torsion coil spring around the support shaft 72b. Since these structures are publicly known, details are omitted.
As a result, the seat S can be flipped upward from the rear side in the folded state of the seat back 2, but in the present embodiment, the flip-up is regulated by an interlock mechanism 40 described later until the rearmost position is reached. The At the rearmost position, the interlock mechanism 40 is also detached from the striker 41 at the same time, and is flipped up.

<Interlock mechanism 40>
The interlock mechanism 40 is a mechanism that restricts the seat S from being flipped up except at the set storage preparation position (rearmost), and the interlock mechanism 40 according to the present embodiment is arranged on the seating frame 4 side (in more detail). Are a lock bracket 43 attached to the lower rail 21), an interlock 42 pivotally supported by the lock bracket 43, a biasing member 44 for biasing the interlock 42 toward the striker 41, and an interlock 42. As a main component, the pressing member 45 (see FIGS. 4 and 8) is provided.

The lock bracket 43 is composed of a long plate and is fixed to the side portion of the lower rail 21 with a bolt nut or the like. A locking hole 43a is formed on the vehicle body front side of the lock bracket 43, a protrusion is formed at a position closer to the center than the locking hole 43a, and a locking hole 43b is formed in the protrusion. Further, a support shaft (rotating shaft portion 42a) that pivotally supports the interlock 42 is formed on the center side (right side in FIG. 8) than the locking hole 43b. One end of a slide urging member 23 of the later-described seat slide mechanism 20 is attached to the locking hole 43a, and one end of a coil spring that is the urging member 44 is locked to the locking hole 43b.
The pressing member 45 is formed by bending a plate body into an L shape and fixed to the upper rail 22, and the bent portion (the bent portion 45 a) is above the lock bracket 43 on the lock bracket 43 side from the upper rail 22. It arrange | positions in a position and is provided so that the contact part 42d of the interlock 42 may contact | abut.

  The interlock 42 is a plate body, a pivot shaft portion 42a pivotally supported by the lock bracket 43, a hook portion 42b having one end side formed in a hook shape from the pivot shaft portion 42a, and a hook portion 42b. The engaging hole 42c is formed on the other end side opposite to the engaging hole 42c, and the abutting portion 42d is bent and protruded toward the upper rail 22 through the engaging hole 42c.

The rotating shaft portion 42a and the striker 41 are positioned on a straight line (preferably on a vertical line) when engaged. Further, the end of the interlock 42 opposite to the hook portion 42b is a slope 42e. As will be described later, the interlock 42 rotates along the slope 42e when contacting the striker 41. The shaft 42a is pivoted against the urging member 44, and then the striker 41 is engaged with the hook 42b.
One end of a coil spring, which is a biasing member 44, is locked in the locking hole 42c, and the other end of the biasing member 44 is locked in the locking hole 43b of the lock bracket 43 as described above. ing.

  With this configuration, the upper portion of the interlock 42 is biased forward of the vehicle body (left side in FIG. 8), and the interlock 42 engages with the striker 41 in a hook portion 42b that is a hook-shaped portion formed below.

When the seat slide mechanism 20 of the seat S is operated, the side bracket 8 of the seating frame 4 slides to the rear of the vehicle body (the right side in FIG. 8), so that the pressing member 45 attached to the side bracket 8 is bent. The portion presses the abutting portion 42d above the interlock 42 to the rear of the vehicle body and operates to release the locked state with the striker 41.
When the interlocking state between the interlock 42 and the striker 41 is released, the seating portion 1 is supported only by the assist mechanism 50 and thus can be rotated in the front-rear direction.

<Assist mechanism 50>
The assist mechanism 50 according to the present embodiment assists the storing operation and the returning operation of the sheet S. More specifically, the assist mechanism 50 includes a plurality of assist springs 51 and 52, and the plurality of assist springs 51 and 52 includes the main sheet S in the return direction when the main sheet S is returned. There are those that urge in the folding direction (storage direction) during the storing operation of the sheet S.

  On the other hand, on the sheet S side, a biased portion (not shown) that receives the biasing force of the assist springs 51 and 52 is provided at a position in contact with the assist springs 51 and 52. The contact surfaces of the urged portions with the assist springs 51 and 52 are switched according to the state (stored state or installed state) of the sheet S. Thereby, among the plurality of assist springs 51 and 52, the assist springs 51 and 52 that bias the biased portion are switched depending on the state of the sheet S.

  In the assist mechanism 50 configured as described above, when the main sheet S is in the retracted state, the assist springs 51 and 52 that urge the main sheet S in the returning direction urge the biased portion. As a result, when the state where the rotation of the sheet S is locked by a lock mechanism (not shown) is released, the urging force of the assist springs 51 and 52 for rotating the sheet S in the return direction is applied. As a result, the main sheet S jumps in the return direction, so that the main sheet S can be returned with a small force.

  On the other hand, when the sheet S is in the installed state, the assist springs 51 and 52 that urge the sheet S in the folding direction urge the urged portion. As a result, when the main sheet S is released from the locked state with respect to the vehicle body floor D by the interlock mechanism 40, the urging forces of the assist springs 51 and 52 that rotate the main sheet S in the folding direction act. As a result, the main sheet S jumps up in the folding direction, so that the main sheet S can be stored with a small force.

<Link mechanism 60>
The link mechanism 60 is disposed at a position facing the side bracket 8 on which the reclining mechanism 10 is provided. The link mechanism 60 includes a spiral spring 61 that is attached to the inside of the side bracket 8, that is, the side where the tubular member 5 c of the seat back frame 5 is disposed, and an interlocking lever 62 that interlocks with the movement of the seat back frame 5. ing.

  The end of the spiral spring 61 is bent in a substantially U shape, and the bent portion abuts on the interlocking lever 62, thereby preventing the seat back frame 5 from tilting forward. Therefore, when the upper rail 22 (seat frame 4) is slid by the seat slide mechanism 20, the seat back frame 50 tilts forward, but when the spiral spring 61 of the link mechanism 60 and the interlocking lever 62 are engaged, the seat The back frame 50 can maintain a predetermined inclination angle without further inclination.

  Therefore, since the sliding operation of the seating frame 4 is performed while maintaining the inclination angle of the seat back frame 5, the seat S can slide the seating frame 4 rearward stably and automatically.

<Folding angle of this sheet S and linkage of each mechanism>
Below, the folding angle of this sheet | seat S and the interlocking | linkage of each mechanism are demonstrated based on FIG.
First, when the reclining release lever 11 is operated in the reference state (angle I) of the seat S, the reclining mechanism 10 is unlocked, and the reclining angle is adjusted within the reclining adjustment range (angles I to II). It becomes possible.

  At this time, if the reclining release lever 11 is just operated (a state in which a force for adjusting the reclining angle is not applied), the lock of the slide lock mechanism 30 is released in conjunction therewith, and the seat slide mechanism 20 is Since the seat frame 4 receives a rearward biasing force by the slide biasing member 23 and the upper rail 22 slides with respect to the lower rail 21, the seat S is held in a state where the angle II is maintained. Slide backward in the car body.

  Thereafter, when the seat back 2 is further tilted forward while operating the reclining release lever 11, the slide lock mechanism 30 is operated at an angle III, and the slide is locked again. In the state of the angles II to III, the seat back 2 is urged in the standing direction by the reaction force of the link mechanism 60.

  Then, when the seat back 2 is tilted to the position of the angle IV, in the striker lock mechanism 70 and the interlock mechanism 40, the engagement state between the latch 72 and the striker 41 is released, and the engagement state between the interlock 42 and the striker 41. Are released, and the sheet S can be rotated forward. At this time, the assist mechanism 50 of the main sheet S assists the main sheet S in the storing direction. If the seat S is further folded while being rotated forward, the reclining mechanism 10 is re-locked when the horizontal direction H is reached, and the rotation of the seat back 2 relative to the seat portion 1 is locked by a known locking means. .

As described above, in the present embodiment, the sheet S is folded, the slide lock is released, the striker lock is released, and the slide to the rearmost position of the sheet S is performed by a single operation of operating the reclining release lever 11. Done automatically.
Then, folding the main sheet S, releasing the slide lock, sliding the main sheet S to the rearmost position, re-sliding the slide, releasing the engaged state with the striker 41 by the striker lock mechanism 70, and moving the main sheet S in the storing direction. It is possible to interlock each operation of the rotation assist in turn according to the folding angle of the sheet S. At this time, the interlock mechanism 40 restricts the jumping up to the position of the rearmost, and the engagement state between the interlock 42 and the striker 41 is released when the rearmost position is reached. As a result, it is possible to regulate so that no jumping occurs at positions other than the set storage preparation position (ie, rearmost).

Next, the storing operation and the returning operation of the sheet S will be described based on FIGS. 10 and 11.
First, the storing operation of the sheet S will be described. When the reclining release lever 11 is operated when the seat S is in the installed state (the state shown in FIG. 10A), the reclining mechanism is unlocked. Thereby, this sheet | seat S will be in the state (state shown in FIG.10 (b)) folded and fixed to the predetermined angle. At this time, the slide lock mechanism 30 is simultaneously activated to allow the seat slide mechanism 20 to slide. Then, the sheet slide mechanism 20 is operated while the main sheet S is kept fixed at a predetermined angle, whereby the main sheet S slides backward.

  Thereafter, when the folding of the sheet S is further advanced, the seat slide mechanism 20 is locked by the slide lock mechanism 30. When the folding is further advanced (see FIG. 10C), the striker lock mechanism 70 is operated, the latch 72 is released from the striker 41, and the lower rail 21 can be detached from the striker 41 on the vehicle body floor D. At this time, when the interlock mechanism 40 is operated at the optimum position for storing (the rearmost position: rearmost), the interlock 42 is completely disengaged from the striker 41, thereby releasing the restraining of the seat frame from being lifted. The sheet S can be rotated forward.

  At this time (see FIG. 10D), the assist mechanism 50 assists the rotation of the sheet S. In this way, the interlock mechanism 40 restricts the jumping up to the rearmost position, which is the set storage preparation position, so that even if the striker lock mechanism 70 malfunctions, the situation where the jumping up occurs occurs. Instead, the seat S can be configured to be surely flipped upward from the rear side in the folded state of the seat back.

  When the forward rotation of the seat S is completed and the seat S is in the retracted state (the state shown in FIG. 10 (e)), the back surface of the seating portion 1 and the vehicle body floor D become an integrated flat surface, and a large cargo space Is secured. In addition, in order to fix this seat S to the vehicle body floor D side in the retracted state, known locking means can be attached. By fixing the seat S, it is possible to prevent the seat S from moving unexpectedly while the vehicle is running.

  Subsequently, the return operation of the sheet S will be described. When the locking means for fixing the seat S to the vehicle body floor D is released when the seat S is in the retracted state (the state shown in FIG. 11A), the seat S can be rotated rearward. Become. And when performing operation which rotates this sheet | seat S back (refer FIG.11 (b)), the assist mechanism 50 assists rotation of this sheet | seat S. FIG.

  Since the rearward rotation further proceeds and the seating portion 1 is urged in the retracted direction by the assist spring 51 at the time before the end of the rearward rotation (the state shown in FIG. 11C), the seat S is moved downward. The latch 72 of the striker lock mechanism 70 is locked to the striker 41 on the vehicle body floor D side by pressing toward the (return direction). When the seat S is finally set to the installation position (rearmost position) (see FIG. 11D), the striker 41 gets over the end of the hook portion 42b, and the interlock 42 is moved by the force of the biasing member 44. The striker 41 is engaged and locked. In this way, the operation of returning the seat S is completed by locking the interlock 42 of the interlock mechanism 40 to the striker 41 and raising the seat back 2.

DESCRIPTION OF SYMBOLS 1 Seating part 2 Seat back 3 Headrest 4 Seat frame 5 Seat back frame 5a Pillar support part 5b Side plate 5c Tubular member 6 Bottom plate 7 Connection member 8 Side bracket 8a Outer wall 8b Inner wall 8c Bottom wall 8d Flange part 8e Release plate insertion hole 9 Construction plate 9a Flange portion 9b Protruding portion 10 Reclining mechanism 11 Reclining release lever 12 Spiral spring 20 Seat slide mechanism 21 Lower rail 21a Projection portion 22 Upper rail 22a Upper surface 22b Release plate insertion hole 22c Side surface 23 Slide biasing member 24 Frame side bracket 30 Slide Lock mechanism 31 Rod-shaped member 31a Shaft member 31b Connecting plate 31c Connecting shaft 32 Interlocking plate 32a First surface 32b Second surface 32c Third surface 32d Concave 33 Cancel lever 33a Collar 33b, 33c Projection 34 Rail release lever 34a Projection 34b Biasing member 35 Bracket 36 Lock release plate 36a Hole 37 Release plate biasing member 38 Lock member 38a, 38b Locking hole 39 Mounting bracket 39a Claw 40 Interlock Mechanism 41 Striker 42 Interlock 42a Rotating shaft part 42b Hook part 42c Locking hole 42d Abutting part 42e Slope part 43 Lock bracket 43a, 43b Locking hole 44 Energizing member 45 Pressing member 45a Bending part 50 Assist mechanisms 51, 52 Assist spring 60 Link mechanism 61 Spiral spring 62 Interlocking lever 70 Striker lock mechanism 71 Side plate 72 Latch 72b Support shaft 73 Ratchet 73a Support shaft 74 Coil spring 75 Buffer pad S Seat D Vehicle body floor F Seat Frame H W horizontal wire cable

Claims (4)

A seat frame provided in a storage seat for a vehicle stored in a vehicle body floor by being flipped up in a state in which a seating frame and a seat back frame are folded,
A reclining mechanism for tiltably supporting the seat back frame with respect to the seating frame;
A seat slide mechanism for sliding the seating frame in the front-rear direction;
A slide lock mechanism that prohibits or allows the operation of the seat slide mechanism in conjunction with the reclining mechanism;
A striker lock mechanism for locking the rear portion of the seating frame to the vehicle body floor and restricting the rotation of the storage seat for the vehicle;
An assist mechanism for assisting a storing operation and a returning operation of the storage seat for the vehicle,
The seat slide mechanism includes a lower rail that extends in the front-rear direction of the vehicle body, an upper rail that is slidably engaged with the lower rail, and the seat back frame that is retracted by the reclining mechanism when the storage seat for the vehicle is stored. A slide urging member that automatically slides the upper rail in conjunction with a movement inclined to a predetermined angle;
The seat frame, wherein the seat slide mechanism and the slide lock mechanism are attached to the seating frame. Provided separately from the striker lock mechanism, further comprising an interlock mechanism that regulates the jumping of the seat frame,
The seat frame according to claim 1, wherein one end of the slide urging member is engaged with the interlock mechanism. A link mechanism for adjusting an angle between the seating frame and the seat back frame;
3. The seat frame according to claim 1, wherein the link mechanism maintains an inclination angle of the seat back frame during a sliding operation of the upper rail. A vehicle storage seat comprising at least a seat frame, a cushion material placed on the seat frame, and a skin material covering them,
A vehicular seat, wherein the seat frame uses the seat frame according to any one of claims 1 to 3.

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