JP6289932B2 - Slide seat device for vehicle - Google Patents

Description

  The present invention relates to a vehicle slide seat device in which a seat back is rotatable with respect to a seat cushion, and the seat cushion and the seat back are slidable along a rail.

Conventionally, a vehicle seat device including a slide mechanism and a reclining mechanism is widely known.
The slide mechanism of this type of slide seat device allows a pair of left and right lower rails that extend in the front-rear direction and fixed to the floor of the vehicle, a pair of left and right upper rails that can slide with respect to the left and right lower rails, and a sliding motion of the upper rail with respect to the lower rail And a slide lock mechanism capable of transitioning to an unlocked state and a locked state for restricting a slide operation.
A single seat cushion is fixed to the upper part of the left and right upper rails. Further, the lower end portion of the seat back is connected to the rear end portion of the seat cushion.
A reclining mechanism is provided on the seat cushion and the seat back. The reclining mechanism includes a rotary connection mechanism that connects the lower end portion of the seat back and the rear end portion of the seat cushion so that the seat back can rotate relative to the seat cushion, and an unrecognizable operation of the rotary connection mechanism. A reclining lock mechanism capable of shifting between a locked state and a locked state that restricts the operation of the rotary connecting mechanism.

The slide seat device configured as described above can move the seat cushion and the seat back in the front-rear direction relative to the lower rail by switching the slide lock mechanism to the unlocked state and sliding the upper rail in the front-rear direction with respect to the lower rail. Is possible. If the slide lock mechanism is switched to the locked state when the upper rail (seat cushion and seat back) slides to a desired position, the slide position of the upper rail (seat cushion and seat back) can be fixed at the desired position.
Further, the seat back can be rotated relative to the seat cushion by switching the reclining lock mechanism to the unlocked state and allowing the rotation connecting mechanism to operate. If the reclining lock mechanism is switched to the locked state when the seat back rotates to a desired position, the rotational position of the seat back can be fixed at the desired position.

JP 2007-83880 A

In general, the seat device is provided in the front and rear rows or three rows on the floor surface of the vehicle, and the slide seat device configured as described above may be employed as the last row seat device.
Furthermore, in recent years, the width (front-rear dimensions) of the interior space of the vehicle tends to increase, and the amount of sliding in the front-rear direction of the slide seat device tends to increase accordingly.
However, the seat cushion and the seat back of the last row seat device with a large slide amount are slid to the rear end position (rearmost position) using the slide mechanism, and the seatback is rear end position (rearmost position) using the reclining lock mechanism. ), The seat back may collide (interfere) with the rear wheel house of the vehicle body (the part housing the rear tire).

Further, a space located immediately after the last row of seat devices is formed in the rear part of the vehicle, and the bottom surface of the rear space may be constituted by a rear deck (floor plate). Further, a blindfold plate located above the rear deck is generally attached to the rear deck so as to be rotatable.
However, if the seat back is rotated to the front end position when the upper rail of the seat apparatus in the last row slides to the front end position, a large space in the front-rear direction is formed between the seat apparatus and the rear deck.
Therefore, in order to cover this space with the blindfold board, the blindfold board had to be enlarged.

  An object of the present invention is to provide a vehicular slide seat device in which a problem caused by rotating a seat back to a specific position at a specific slide position does not occur.

A vehicle slide seat device according to the present invention includes a lower rail that extends along a straight line fixed to a vehicle floor, an upper rail that is slidably attached to the lower rail, a seat cushion that is fixed to the upper rail, and the seat cushion. When the seat back connected to be rotatable within a predetermined maximum rotation range and the relative slide position of the upper rail with respect to the lower rail are within the predetermined first slide section, the seat back rotates within the maximum rotation range. And a slide rotation interlocking mechanism that restricts the rotation range of the seat back to a restriction range narrower than the maximum rotation range when the relative slide position is in a second slide section different from the first slide section. And the slide rotation interlocking mechanism includes the upper rail and the upper array. A rotation range regulating member provided on at least one of the fixed members that are immovable relative to the upper rail and capable of moving relative to the upper rail and defining a rotation range of the seat back by contacting the seat back, and fixed to the lower rail When the relative slide position is in the first slide section, the relative movement operation of the rotation range restricting member with respect to the upper rail is not limited, and when the relative slide position is in the second slide section, A relative movement restricting member that restricts a relative movement operation, and the rotation range of the seat back defined by the rotation range restricting member is in accordance with a range in which the rotation range restricting member can move relative to the upper rail. It is characterized by changing .

  At one end of the relative movement restricting member in the linear direction, the seat back is located at a rotational position other than the restriction range, and the relative slide position is an end of the first slide section on the second slide section side. There may be provided a slide restricting portion for restricting the relative slide position from moving from the first slide section to the second slide section when the rotation range restricting member comes into contact with the second slide section.

  The rotation range restricting member is movable relative to the upper rail in the vertical direction, and when the relative slide position is at the end of the first slide section on the second slide section side, a part of itself is relative to the upper rail. An upper and lower slide member that can contact the slide restricting portion of the movement restricting member, and an upper rail and a fixed member that does not move relative to the upper rail are rotatably supported and connected to the upper and lower slide members. A rotation position defining member that defines the rotation range of the seat back by contacting the seat back, and between the rotation center of the rotation position defining member and the rotation connection position with respect to the upper and lower slide members. The seat back may be in contact with the position.

  When the relative slide position is at the end of the first slide section on the second slide section side, the lower part of the upper and lower slide members can be brought into contact with the slide restricting section, and does not move with respect to the upper rail and the upper rail. When at least one of the fixing members has a slide groove extending in the vertical direction, the slide is located when the seat back is located at a rotational position outside the restriction range and the relative slide position is located at the first slide section. The upper and lower slide members may have a slide fitting portion that fits in the lower half of the groove and is positioned above the slide restricting portion.

  The contact position of the seat back with respect to the rotational position defining member may be a position closer to the rotational center side than the rotational connection position.

  You may provide the engaging member at the time of the lift which was fixed to the said upper rail, and is located directly under the said relative movement control member.

In the vehicle slide seat device of the present invention, when one of the slide position of the upper rail with respect to the lower rail and the rotation position of the seat back with respect to the seat cushion is located within a predetermined range, the other position is limited within the predetermined range. .
Therefore, for example, this vehicle slide seat device can be used as a rear row seat device and a wheel house can be provided behind the seat device. When the upper rail is positioned at the rear end position with respect to the lower rail, the upper rail (and the seat cushion, the seat) can be configured by restricting the rotation range of the seat back to a predetermined range (narrow range) when the upper rail is positioned at the rear end position. When the back) slides to the rear end position with respect to the lower rail, the seat back rotated backward can be prevented from interfering with the wheel house.
In the present invention, when the relative slide position of the upper rail with respect to the lower rail is in the predetermined first slide section, the seat back is allowed to rotate within the maximum rotation range, and the relative slide position is the first slide section. When in another second slide section, a slide rotation interlocking mechanism that restricts the rotation range of the seat back to a restriction range narrower than the maximum rotation range is provided. That is, the vehicle seat seat device of the present invention has different seat back rotation ranges depending on the slide position of the upper rail (and the seat cushion and the seat back) relative to the lower rail. For example, the vehicle slide seat device can be used as a rear row seat device, the second slide section can be a rear section of the first slide section, and a wheel house can be provided behind the seat apparatus. . When configured in this manner, the upper rail (and the seat cushion, the seat back) becomes the lower rail if the rearward rotation range of the seatback when in the second slide section is restricted to a restriction range narrower than the maximum rotation range. On the other hand, it is possible to prevent the seat back rotated backward when sliding to the rear end position from interfering with the wheel house.

According to the second aspect of the present invention, when the seat back is located at a rotational position other than the regulation range, the relative slide position of the upper rail (and the seat cushion, the seat back) moves from the first slide section to the second slide section. Can be surely prevented. On the other hand, when the seatback is located in the restriction range and the relative slide position is located in the first slide section, the relative slide position can be moved from the first slide section to the second slide section.

When the seat back rotates, a part of the seat back moves up and down. Therefore, even if the part of the seat back directly contacts (connects) to the upper and lower slide members, the relative slide can be achieved by moving the upper and lower slide members up and down when the seat back is located at a rotational position other than the regulation range. The position can be restricted from moving from the first slide section to the second slide section.
However, when configured as in the third aspect of the invention, when the rotational position defining member rotates in conjunction with the rotation of the seat back, the rotational connection position (part) of the rotational position defining member relative to the upper and lower slide members is the rotational position. It moves up and down larger than the contact portion of the defining member with the seat back.
Therefore, when the seat back is located at a rotational position other than the restriction range and the relative slide position is located at the end of the first slide section on the second slide section side, the upper and lower slide members are moved to one of the relative movement restriction members. It is possible to more reliably restrict the relative slide position from moving from the first slide section to the second slide section by reliably contacting the end portion.

According to the fourth aspect of the present invention, compared to the case where the slide fitting portion is fitted to the upper half portion of the slide groove, the lower portion of the upper and lower slide members (the contact portion with the slide restriction portion of the relative movement restriction member) ) And the slide fitting portion. Therefore, when the lower part of the upper and lower slide members comes into contact with the slide restricting portion, the upper and lower slide members (parts located below the slide fitting portion) are hardly damaged.

According to the fifth aspect of the present invention, since the distance from the contact position of the seat back to the rotational position defining member to the rotational center of the rotational position defining member is shortened, the burden on the rotational position defining member is reduced.

According to the sixth aspect of the present invention, when the upper rail is lifted upward with respect to the lower rail, the lifting engagement member is brought into contact with the relative movement restricting member from below, so that the upper rail is further lifted with respect to the lower rail. Be regulated.
In this way, the relative movement restricting member serves both as a slide restricting stopper for the upper rail and a stopper for preventing lifting. Accordingly, the number of parts is reduced and the structure is simplified as compared with the case where separate stoppers are provided as the slide restricting stopper and the floating restraining stopper.

It is a side view of the slide seat device for vehicles of a first embodiment of the present invention. It is a disassembled perspective view of a slide mechanism. It is a disassembled perspective view which shows a part of reclining mechanism and a part of slide rotation interlocking mechanism. FIG. 6 is a schematic side view of a slide seat device in which the seat cushion, the cushion body of the seat back, and the engagement member at the time of lifting are omitted when the relative slide position of the upper rail with respect to the lower rail is in the first slide section. FIG. 5 is a side view similar to FIG. 4 when the relative slide position of the upper rail with respect to the lower rail is in the second slide section. It is sectional drawing which follows the VI-VI arrow line of FIG. 5 which abbreviate | omits and shows a supporting member. It is a disassembled perspective view similar to FIG. 3 of 2nd embodiment. FIG. 5 is a side view similar to FIG. 4 when the relative slide position of the upper rail with respect to the lower rail is in the second slide section. It is a side view similar to FIG. 8 when the relative slide position with respect to the lower rail of an upper rail exists in a 1st slide area.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The direction in the following description is based on the arrow direction indicated in the figure.
A slide seat device is provided in two front and rear rows on the floor (inside space) of an automobile (vehicle) (not shown), and two slide seat devices are provided side by side in the front and rear rows. . The illustrated slide sheet device 10 is on the right side of the rear row.
The slide sheet device 10 includes a pair of left and right slide mechanisms 12. Each slide mechanism 12 includes a lower rail 13 that linearly extends in the front-rear direction, and an upper rail 14 that is slidably supported on the lower rail 13. The lower rail 13 is a metal channel material extending in the front-rear direction and having an upper surface opened. The left and right lower rails 13 are fixed to the vehicle floor surface with their front and rear end positions being matched. On the left and right inner walls of the lower rail 13, a large number of lock grooves 13a (see FIG. 2) whose lower ends are open and whose upper ends are closed are formed side by side in the front-rear direction. The upper rail 14 is a metal member extending in the front-rear direction, and the lower portion of the upper rail 14 is inserted into the lower rail 13.
A plurality of retainers 16 that rotatably support four balls 15 are inserted into the lower rail 13. The four balls 15 supported by the retainers 16 are rotatably in contact with the inner surface of the lower rail 13 and the outer surface of the upper rail 14. Accordingly, the upper rail 14 can slide in the front-rear direction with respect to the lower rail 13 while rotating the balls 15. However, since the lower rail 13 is provided with a front end stopper and a rear end stopper (not shown), the sliding range of the upper rail 14 with respect to the lower rail 13 is the front end position where the upper rail 14 contacts the front end stopper and the rear end where the upper rail 14 contacts the rear end stopper. Restricted between position. Further, although the upper rails 14 can move slightly upward relative to the corresponding lower rails 13, escape from the lower rails 13 is restricted.

A metal lock lever 17 is disposed in the inner space of the upper rail 14. The lock lever 17 is mounted on the upper rail 14 so as to be rotatable (swingable) and not movable back and forth about a rotation center axis extending in the left-right direction, and is rotatable between a locked position and an unlocked position. Further, a metal lock spring 18 is attached to the inner space of the upper rail 14 so as not to move back and forth. The lock spring 18 is in contact with the lock lever 17 and always urges the lock lever 17 toward the lock position. Further, four lock portions 18 a are projected from an intermediate portion in the longitudinal direction of the lock spring 18.
When an external force other than the lock spring 18 is not applied to the lock lever 17, the lock lever 17 is positioned at the lock position, and the lock portion 18 a of the lock spring 18 is engaged with one of the lock grooves 13 a of the lower rail 13. Therefore, the upper rail 14 cannot slide with respect to the lower rail 13.
On the other hand, when the lock lever 17 is rotated to the unlocked position against the urging force of the lock spring 18, the lock spring 18 is elastically deformed, and each lock portion 18a escapes downward from the lock groove 13a. Therefore, the upper rail 14 can slide with respect to the lower rail 13.
The left and right ends of a single loop handle (not shown) are connected to the front ends of the lock levers 17 of the left and right slide mechanisms 12, respectively. That is, the left and right lock levers 17 are linked via the loop handle. Therefore, when the loop handle is not operated, the left and right lock levers 17 are positioned at the lock position, and when the loop handle is rotated, the left and right lock levers 17 rotate together to the unlock position.
The lower rail 13, the upper rail 14, the ball 15, the retainer 16, the lock lever 17, the lock spring 18, and the loop handle described above are components of the slide mechanism 12.

A metal relative movement restricting member 20 is fixed to the lower surface of the left lower rail 13. The relative movement restricting member 20 includes a bottom surface fixing portion 21 made of a flat plate fixed to the lower surface of the lower rail 13 and a substantially inverted U-shaped stopper portion 22 protruding upward from the left edge of the bottom surface fixing portion 21. Have.
On the other hand, a metal lifting engagement member 24 is fixed to the upper surface of the left upper rail 14. The floating engagement member 24 includes a ceiling surface fixing portion 25 made of a flat plate fixed to the upper surface of the upper rail 14 and an engagement portion having a substantially U-shaped cross section that protrudes downward from the left edge of the ceiling surface fixing portion 25. 26. The right side wall portion of the engaging portion 26 constitutes a contact wall portion 27 that protrudes upward. At least a part of the contact wall portion 27 of the engaging portion 26 is always located in the internal space of the stopper portion 22 (positioned immediately below the ceiling portion of the stopper portion 22). When the slide mechanism 12 is in a normal state (when it is not in a lifted state described later), there is a vertical gap between the upper end surface of the contact wall portion 27 and the lower surface of the ceiling portion of the stopper portion 22.

Next, the structure of the reclining mechanism 30 will be described.
Metal seat cushion frames 31 (fixing members) are fixed to the upper surfaces of the left and right upper rails 14. The seat cushion frame 31 is a member extending in the front-rear direction, and a seat back connection portion 32 protruding upward is formed at the rear end portion. The left and right seat cushion frames 31 are coupled by a connecting member (not shown) not shown. Therefore, the left and right upper rails 14 slide relative to the left and right lower rails 13 in synchronization with each other. Further, portions of the left and right seat cushion frames 31 (seat cushions) excluding the seat back connection portion 32 are embedded in the seat cushion body 28 (seat cushion) having flexibility and elasticity.
Further, a pair of left and right metal seat back frames 34 are disposed on the vehicle exterior side of the seat back connection portion 32 of the left and right seat cushion frames 31. The left and right seat back frames 34 are connected to each other by a connecting member (not shown). The seat back connecting portions 32 of the left and right seat back frames 34 and the left and right seat cushion frames 31 are embedded in a seat back body 29 (seat back) that is flexible and elastic. The lower end portion of the right seat back frame 34 is rotatably connected to the seat back connection portion 32 of the right seat cushion frame 31 via a rotation connecting shaft extending in the left-right direction. On the other hand, the lower end portion of the left seat back frame 34 is rotatably connected to the seat back connection portion 32 of the left seat cushion frame 31 via a known reclining unit RC (see FIG. 3).
The reclining unit RC includes a base plate fixed to the seat back connection portion 32 of the seat cushion frame 31, a gear plate fixed to the seat back frame 34 and having an annular internal gear on the inner peripheral surface, a base plate and a gear plate. A rotation center shaft that penetrates the center portion so as to be relatively rotatable and is coaxial with the rotation connecting shaft, a lock member that is supported on the base plate so as to be relatively movable only in the radial direction of the rotation center shaft, and rotates together with the rotation center shaft A rotating cam that rotates, and a lock spring that urges the rotating cam to rotate. The locking member is movable in the radial direction between the meshing position where the external gear formed on the outer periphery of the locking member meshes with the internal gear of the gear plate and the non-meshing position spaced from the internal gear toward the inner circumferential side. It is. The rotating cam is rotatable between a lock position where the lock member is positioned at the meshing position and an unlock position where the lock member is positioned at the non-meshing position. The lock spring urges the rotary cam to rotate toward the lock position. Accordingly, when the operation lever 33 (see FIG. 1) linked to the rotation center axis and located outside the side surface of the seat back main body 29 is not rotated (when positioned at the initial operation position indicated by the solid line in FIG. 1), Since the external gear of the lock member meshes with the internal gear of the gear plate by the rotational urging force of the lock spring, the seat back frame 34 (seat back body 29) rotates relative to the seat cushion frame 31 (seat cushion body 28). It becomes impossible. On the other hand, when the operation lever 33 is rotated against the rotational urging force of the lock spring (see the phantom line in FIG. 1), the rotating cam moves to the unlock position and the external gear of the lock member moved to the non-engagement position. Is separated from the internal gear of the gear plate, the seat back frame 34 (seat back main body 29) can rotate (adjustable in angle) relative to the seat cushion frame 31 (seat cushion main body 28).
The internal gear formed on the gear plate of the present embodiment has a large number of tooth portions formed at intervals of about 2 ° in the circumferential direction. Accordingly, the reclining unit RC can lock (rotate) the seat back frame 34 in units of 2 °. The seat back main body 29 (seat back frame 34) can be rotated forward and backward from an initial position shown by a solid line in FIG. That is, the seat back main body 29 can rotate to a front rotation end position (see reference numeral 29A in FIG. 1) and a rear rotation end position (see reference numeral 29B in FIG. 1). The rotation range from the front rotation end position to the rear rotation end position is the “maximum rotation range”.
Further, a metal seat belt anchor (not shown) is fixed to the left seat cushion frame 31, and seat belt locking means (not shown) protruding outside the seat cushion main body 28 is attached to the seat belt anchor. It is provided.

Next, the detailed structure of the slide rotation interlocking mechanism 40 will be described.
A substantially triangular rotation protrusion 35 that protrudes radially outward centering on the rotation center axis is integrally provided at the lower end portion of the left seat back frame 34. A pressing pin 36 whose axis extends in the left-right direction (a part of the seat back) is fixed to the tip of the rotating protrusion 35.
On the left side of the left seat cushion frame 31, a metal rotation position defining member 41 (rotation range regulating member) located immediately below the seat back frame 34 and the pressing pin 36 is provided. The rotational position defining member 41 has a substantially rectangular shape extending in the substantially front-rear direction. In the vicinity of both ends of the rotation position defining member 41, a pin connection hole 41a and a pin connection hole 41b are formed as through holes, respectively.
On the left side of the rotational position defining member 41, a metal support member 44 (fixed member) fixed to the left seat cushion frame 31 is provided. The support member 44 has a slide groove 45 extending in the vertical direction. A rotation connection pin 42 is fixed to the support member 44, and the rotation connection pin 42 protrudes from the support member 44 toward the right side. Further, a pin connection hole 41 a formed in the vicinity of the rear end of the rotation position defining member 41 is fitted to the rotation connection pin 42 so as to be rotatable. Accordingly, the rotation position defining member 41 can rotate with respect to the support member 44 around the rotation connection pin 42.
On the left side of the support member 44, a metal vertical slide member 47 (rotation range restricting member) opposed to the slide groove 45 in the left-right direction is disposed. The vertical slide member 47 has a substantially rectangular shape extending in the vertical direction. A pin connection hole 47a and a pin connection hole 47b are formed in the vertical slide member 47 as a through hole arranged vertically.
The front portion of the rotation position defining member 41 and the upper portion of the upper and lower slide members 47 are connected to each other by a rotation connection pin 49 (rotation range restricting member) that passes through the slide groove 45 and extends in the left-right direction. The rotary connecting pin 49 integrally has a small-diameter portion 49a that forms both left and right sides and is coaxial with each other, and a central large-diameter portion 49b that is larger in diameter than the small-diameter portion 49a located between the left and right small-diameter portions 49a. doing. The small diameter portion 49a on the right side of the rotational connection pin 49 is fitted to the pin connection hole 41b of the rotational position defining member 41 so as to be relatively rotatable, and the small diameter portion 49a on the left side is engaged with the pin connection hole 47a of the vertical slide member 47. Mated in a fixed state. However, the pin connection hole 41b is slightly longer in the longitudinal dimension of the rotational position defining member 41 than the small diameter portion 49a. That is, a gap in the longitudinal direction is formed between the pin connection hole 41b and the small diameter portion 49a. The central large diameter portion 49 b of the rotary connection pin 49 is located inside the slide groove 45. The outer diameter of the central large diameter portion 49b is approximately the same size as the width of the slide groove 45 (the width of the slide groove 45 is slightly larger). Therefore, the central large diameter portion 49 b can slide in the vertical direction along the slide groove 45.

Further, the small diameter portion 50a on the left side of the rotational connection pin 50 (rotation range regulating member) (slide fitting portion) having the same specifications as the rotational connection pin 49 is fitted in the pin connection hole 47b of the upper and lower slide member 47 in a fixed state. Yes. The central large diameter portion 50b of the rotary connection pin 50 is fitted to the slide groove 45 so as to be slidable in the vertical direction. Therefore, the vertical slide member 47 can slide in the vertical direction without rattling with respect to the slide groove 45. Specifically, it is slidable in the vertical direction between the upper position (see FIG. 5) and the lower end position (see FIG. 4) (the vertical slide member 47 can move further upward than the upper position as will be described later). Is). Furthermore, an urging spring SP (see FIG. 3) is provided between the support member 44 and the rotational position defining member 41 to urge the rotational position defining member 41 to move clockwise in FIGS.
Therefore, when no external force other than the urging spring SP is applied to the rotational position defining member 41 and the vertical slide member 47, the rotational position defining member 41 is brought into contact with the rotational position defining member 41 as shown in FIG. The slide rotation interlocking mechanism 40 may be designed so that the rotation position defining member 41 is inclined with respect to the horizontal direction at this time, and the upper and lower slide members 47 are located at the upper position. On the other hand, when the rotational position defining member 41 is rotated to the maximum tilt position shown in FIG. 4 against the urging force of the urging spring SP, the vertical slide member 47 linked to the rotational position defining member 41 moves to the lower limit position. To do.
The relative movement restricting member 20, the rotation position defining member 41, the rotation connection pin 42, the support member 44, the vertical slide member 47, the rotation connection pin 49, the rotation connection pin 50, and the biasing spring SP described above are the slide rotation interlocking mechanism 40. Is a component of

Next, the operation of the slide sheet device 10 of this embodiment will be described.
As described above, the slidable range of the upper rail 14 with respect to the lower rail 13 is between the front end position and the rear end position. The range is such that the vertical slide member 47 is positioned forward of the front end of the relative movement restricting member 20. It can be divided into “one slide section” and “second slide section” in which the vertical slide member 47 is located behind the front end of the relative movement restricting member 20.
In the following description, the operation of the slide seat device 10 is divided into a case where the relative slide position of the upper rail 14 relative to the lower rail 13 is in the “first slide section” and a case where the relative slide position is in the “second slide section”. I do.

First, a case where the relative slide position of the upper rail 14 with respect to the lower rail 13 is in the “first slide section” will be described.
When the seat back body 29 of the slide seat device 10 is located at the initial position shown by the solid line in FIG. 1 and the operation lever 33 is located at the initial operation position shown in FIG. 1, the rotation of the lock spring of the reclining unit RC is performed. Since the external gear of the lock member meshes with the internal gear of the gear plate by the force (because the reclining unit RC is in the locked state), the seat back body 29 is held at the initial position. At this time, the pressing pin 36 provided on the seat back frame 34 is in contact with the upper surface of the rotational position defining member 41. Therefore, as shown in FIG. 5, the vertical slide member 47 is located at the upper position and the rotational position defining member 41 is located at the horizontal position. At this time, the lower end portion of the vertical slide member 47 is located above the upper surface of the stopper portion 22.

  When the operating lever 33 is rotated from this state, the rotating gear of the reclining unit RC moves to the unlocked position, and the external gear of the lock member that has moved to the non-meshing position separates from the internal gear of the gear plate (the reclining unit Since the RC is unlocked), the seat back body 29 (seat back frame 34) extends from the initial position to the front rotation end position (see reference numeral 29A in FIG. 1) and the rear rotation end position (reference numeral 29B in FIG. 1). It can be rotated. When the seat back main body 29 rotates from the initial position to the front rotation end position side, the pressing pin 36 provided on the seat back frame 34 is separated upward from the upper surface of the rotation position defining member 41, and the vertical slide member 47 is shown in FIG. And an upper limit position (position where the rotary connecting pin 49 abuts on the upper end surface of the slide groove 45) further above the upper position shown in FIG. 6 and the rotational position defining member 41 is moved to a position rotated clockwise from the horizontal position. Move (tilt).

On the other hand, when the seat back main body 29 is rotated rearward from the initial position, the seat back main body 29 is moved to a front intermediate restriction position (position 29C in FIG. 1) by a slight angle (for example, 10 °) from the rear rotation end position. When rotating, the pressing pin 36 that is in contact with the upper surface of the rotational position defining member 41 slightly opposes the rotational position defining member 41 around the rotational connecting pin 42 while resisting the urging force of the urging spring SP. Rotate to Then, the vertical slide member 47 linked to the rotational position defining member 41 slightly slides downward, but the lower end portion of the vertical slide member 47 remains positioned above the upper surface of the stopper portion 22. At this time, the pressing pin 36 is located between the pin connection hole 41a (the rotation connection pin 42) and the pin connection hole 41b (the rotation connection pin 49) of the rotation position defining member 41 and more than the pin connection hole 41b (the rotation connection pin 49). A portion close to the pin connection hole 41a (the rotation connection pin 42) is pressed. Therefore, at this time, the distance from the contact position of the pressing pin 36 with respect to the rotational position defining member 41 to the rotation center (the rotational connection pin 42) of the rotational position defining member 41 is shortened, and thus the pressing pin 36 is applied to the rotational position defining member 41. The burden is small. When the seat back main body 29 further rotates rearward from the intermediate restriction position, the pressing pin 36 further rotates the rotation position defining member 41 downward around the rotation connection pin 42. Then, the upper and lower slide members 47 linked to the rotation position defining member 41 slide further downward, and the lower end portion of the upper and lower slide members 47 that have been positioned above the upper surface of the stopper portion 22 until then is the upper surface of the stopper portion 22. Move downward. When the seat back body 29 rotates to the rear rotation end position, the rotation position defining member 41 rotates to the maximum tilt position and the vertical slide member 47 moves to the lower limit position, so that the lower end portion of the vertical slide member 47 is the stopper portion 22. It moves greatly downward from the lower surface (see FIG. 4).
Therefore, by operating the loop handle in a state where the seat back main body 29 is located on the rear rotational end position side from the intermediate restriction position, the upper rail 14 is made slidable with respect to the lower rail 13, and then the upper rail 14 is moved to the lower rail 13. In contrast, when the slide portion is slid to the rear end position of the “first slide section”, the lower portion (lower end vicinity portion) of the upper and lower slide members 47 is against the slide restricting portion 22a which is the front end face of the stopper portion 22 of the relative movement restricting member 20. And collide from the front. Therefore, the upper rail 14 (the seat cushion main body 28, the seat back main body 29) is restricted from moving to the “second slide section” in a state where the seat back main body 29 is located behind the intermediate restriction position. Further, when the seat back main body 29 is positioned behind the intermediate restriction position, the rotary connection pin 50 is fitted into the lower half of the slide groove 45 (and the part above the slide restriction part 22a). The distance from the contact portion of the slide restricting portion 22a to the rotary connection pin 50 is shortened. Therefore, when the lower part of the vertical slide member 47 and the slide restricting part 22a of the stopper part 22 collide, the vertical slide member 47 (part located below the rotary connection pin 50) is not easily damaged.
In addition, a wheel house (a rear right tire is accommodated in the rear) of the slide seat device 10 is formed at the rear of the right side wall inside the vehicle body. However, even if the seat back body 29 is rotated to the rear rotation end position with the upper rail 14 positioned at the rear end position of the “first slide section” (and the lock lever 17 positioned at the lock position), the seat back The main body 29 does not interfere with the wheel house.

Next, a case where the relative slide position of the upper rail 14 with respect to the lower rail 13 is in the “second slide section” will be described.
In order to move the upper rail 14 in the “first slide section” to the “second slide section”, the seat back main body 29 is first moved from the intermediate restriction position to the forward position while rotating the operation lever 33. Rotate. Then, the rotational position defining member 41 is rotated in the clockwise direction in FIGS. 3 to 5 by the urging force of the urging spring SP, and the vertical slide member 47 is moved upward. As a result, the lower end portion of the vertical slide member 47 moves upward from the upper surface of the stopper portion 22.
Accordingly, by operating the loop handle in this state, the upper rail 14 is made slidable with respect to the lower rail 13, and then the upper rail 14 is slid rearward with respect to the lower rail 13, whereby the upper and lower slide members 47 are stopped. The relative slide position of the upper rail 14 shifts to the “second slide section” without causing a collision with the portion 22 (see FIG. 5). When the seat back main body 29 is positioned at the intermediate restriction position, a minute gap is formed between the lower end surface of the vertical slide member 47 and the upper surface of the stopper portion 22. Therefore, if the seat back main body 29 is moved from the intermediate restriction position or the intermediate restriction position to the front position, the upper rail 14 can smoothly slide in the “second slide section” with respect to the lower rail 13.
Then, when the relative slide position of the upper rail 14 with respect to the lower rail 13 is in the “second slide section”, the seat back main body 29 is rotated backward from the intermediate restriction position with the lock lever 17 positioned at the lock position. The lower end surface of the vertical slide member 47 comes into contact with the upper surface of the stopper portion 22. That is, since the downward sliding operation of the upper and lower slide members 47 is restricted, the seat back body 29 cannot be rotated rearward from the intermediate restriction position. In other words, the rotatable range of the seat back body 29 is limited to a “restricted range (which is narrower than the maximum rotational range)” obtained by excluding a range behind the intermediate restricted position from the “maximum rotational range”. Accordingly, the seat back main body 29 cannot be rotated to the rear rotation end position in a state where the upper rail 14 is slid to the rear end position.
When the upper rail 14 moves to the rear end position, which is the last part of the “second slide section”, even if the seat back body 29 is rotated backward to the intermediate restriction position, the seat back body 29 interferes with the wheel house. Never do.

  As described above, the slide seat device 10 of the present embodiment has the seat back main body 29 (in accordance with the slide position of the upper rail 14 (and the seat cushion main body 28 and the seat back main body 29) with respect to the lower rail 13 by the slide rotation interlocking mechanism 40. The range of rotation of the seat back frame 34) is made different, thereby preventing the seat back body 29 rotated rearward from interfering with the wheel house.

Furthermore, the vertical slide member 47 and the seat back frame 34 (pressing pin 36) are not linked directly but via the rotational position defining member 41, so that the vertical slide member 47 and the seat back frame 34 (pressing pin 36) are linked. ) Is increased as compared with the case of directly linking the vertical sliding member 47 per rotation angle of the seat back frame 34 (seat back main body 29).
Accordingly, when the upper rail 14 is slid from the first slide section side to the second slide section side with the seat back main body 29 positioned rearward from the intermediate restriction position, the vertical slide member 47 is moved to the slide restriction portion of the stopper portion 22. It is possible to make contact with 22a reliably. That is, it is possible to more reliably prevent the relative slide position from moving from the first slide section to the second slide section.

Further, the components of the slide rotation interlocking mechanism 40 (relative movement regulating member 20, pressing pin 36, rotation position defining member 41, rotation connection pin 42, support member 44, vertical slide member 47, rotation connection pin 49, rotation connection pin 50, And the biasing spring SP), only the relative movement restricting member 20 is provided on the lower rail 13 side, and most of the constituent elements of the slide rotation interlocking mechanism 40 (constituent elements excluding the relative movement restricting member 20) are provided on the upper rail 14 side. Yes. Further, the relative movement restricting member 20 and the vertical slide member 47 can be contacted and separated (not connected by pins or the like).
Therefore, the slide rotation interlocking mechanism 40 excluding the relative movement restricting member 20, the seat cushion frame 31, and the reclining unit RC are integrated in advance, and the integrated object is fixed to the upper surfaces of the left and right upper rails 14, and then the left and right By connecting the seat back frame 34 to the left and right seat cushion frames 31, the slide seat device 10 can be assembled efficiently.

Further, an end of the seat belt provided in the interior of the vehicle body is connected to the seat belt locking means of the slide seat device 10, and the vehicle on which the slide seat device 10 is mounted in this state is located in front of the obstacle. When the vehicle collides with another vehicle (for example, another automobile), this load reaches the seat belt from the vehicle body (through the seated person of the slide seat device 10). Further, the load extends as an upward load from the seat belt to the left upper rail 14 via the seat belt locking means, the seat belt anchor, and the seat cushion frame 31. Therefore, the left upper rail 14 is lifted with respect to the left lower rail 13. However, when the left upper rail 14 is lifted slightly upward with respect to the lower rail 13, the contact wall portion 27 of the engaging member 24 at the time of lifting is from the lower side to the ceiling portion of the stopper portion 22 of the relative movement restricting member 20. By colliding, further lifting of the left upper rail 14 with respect to the lower rail 13 is restricted.
Furthermore, the relative movement restricting member 20 of the present embodiment also serves as a stopper for the vertical slide member 47 and a stopper for the engaging member 24 at the time of lifting. Accordingly, the number of parts is small and the structure is simple as compared with the case where separate stoppers are provided as the stopper for the vertical slide member 47 and the stopper for the engaging member 24 at the time of lifting.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same members as those in the first embodiment are designated by the same reference numerals, and detailed description thereof is omitted.
The automobile of this embodiment also includes a slide seat device in two rows. However, a space (trunk area) is formed immediately after the slide seat device (slide seat device 10) in the second row. This space constitutes the rear part of the interior space, and the bottom surface of the space is constituted by a rear deck (floor plate). Further, a blindfold plate (not shown) located above the rear deck is rotatably attached to the rear deck.
The slide sheet device 10 of this embodiment is characterized by a slide rotation interlocking mechanism 55.
A long hole 35a is formed as a through hole in the rotation protrusion 35 of the seat back frame 34. A small-diameter portion 49a on the left side of the rotary connection pin 49 is fitted in the long hole 35a. However, the longitudinal direction (substantially front-rear direction) dimension of the long hole 35a is larger than the outer diameter of the small diameter part 49a. Therefore, the small-diameter portion 49a can not only rotate with respect to the long hole 35a around its own axis, but can also move relatively in the front-rear direction with respect to the long hole 35a by a gap with the long hole 35a.
A metal support member 56 (fixing member) is provided on the left side of the left seat cushion frame 31 with a left-right clearance formed between the seat cushion frame 31 and the support member 56. The frame 31 is fixed using two screws 58. Further, the support member 56 is provided with a slide groove 45.
In the gap between the left seat cushion frame 31 and the support member 56, an upper and lower slide member 47 (rotation range regulating member) is disposed in a state of facing the slide groove 45. Further, the central large diameter portion 49b of the rotary connection pin 49 linked to the elongated hole 35a of the rotary projection 35 is fitted in the slide groove 45 so as to be slidable in the vertical direction, and the small diameter portion on the right side of the rotary connection pin 49 is fitted. 49a is fitted into the pin connection hole 47a in a fixed state. Further, the small diameter portion 50a on the right side of the rotary connection pin 50 is fitted in the pin connection hole 47b of the vertical slide member 47 in a fixed state. The central large diameter portion 50b of the rotary connection pin 50 is fitted to the slide groove 45 so as to be slidable in the vertical direction. Therefore, the vertical slide member 47 can slide in the vertical direction without rattling with respect to the support member 56 (slide groove 45).
Further, the slide operation of the upper and lower slide members 47 and the rotation operation of the seat back frame 34 are interlocked. That is, when the seat back main body 29 (seat back frame 34) is located at the initial position, the vertical slide member 47 is located at the intermediate position shown in FIG. Further, when the seat back body 29 (seat back frame 34) is located at the rear rotational end position, the vertical slide member 47 is located at the upper position (not shown), and the seat back main body 29 (seat back frame 34) is located at the front rotational end position. 9 is located at the lower limit position shown in FIG.
When the seat back body 29 is positioned forward from the initial position (that is, when the vertical slide member 47 is positioned below the intermediate position), the lower end portion of the vertical slide member 47 is positioned below the upper surface of the stopper portion 22. To do. On the other hand, when the seat back body 29 is at the initial position or behind the initial position (that is, when the vertical slide member 47 is positioned at the intermediate position or above the intermediate position), the lower end portion of the vertical slide member 47 is the stopper. It is located above the upper surface of the part 22.
The relative movement restricting member 20, the up / down slide member 47, the rotation connection pin 49, the rotation connection pin 50, the support member 56, and the screw 58 described above are components of the slide rotation interlocking mechanism 55.

Next, the operation of the slide sheet device 10 of this embodiment will be described.
The slidable range of the upper rail 14 with respect to the lower rail 13 according to the present embodiment includes a “first slide section” in which the upper and lower slide members 47 are located behind the rear end of the relative movement restricting member 20, and It is possible to divide it into a “second slide section” located ahead of the rear end of 20. Furthermore, the “first slide section” of the present embodiment matches the rear end position of the upper rail 14 (however, the “first slide section” may be set as a section having a predetermined distance in the front-rear direction).

First, the case where the relative slide position of the upper rail 14 with respect to the lower rail 13 is in the “first slide section (rear end position)” will be described.
At this time, as shown in FIG. 9, the vertical movement of the vertical slide member 47 with respect to the support member 56 is not restricted by the relative movement restriction member 20. Therefore, the seat back main body 29 (seat back frame 34) can rotate the entire range between the front rotation end position and the rear rotation end position (that is, the maximum rotation range).
For example, when the seat back main body 29 (seat back frame 34) is rotated to the front rotation end position as shown in FIG. 9 with the lock lever 17 positioned at the lock position, the vertical slide member 47 is moved to the lower limit position shown in FIG. Therefore, the lower end portion of the upper and lower slide member 47 is moved greatly downward from the lower surface of the stopper portion 22.
Therefore, by operating the loop handle in this state, the upper rail 14 is made slidable with respect to the lower rail 13, and then the upper rail 14 is slid forward with respect to the lower rail 13, so that the lower part of the upper and lower slide members 47 ( Near the lower end) collides with the slide restricting portion 22b, which is the rear end surface of the stopper portion 22 of the relative movement restricting member 20, from behind. Therefore, the upper rail 14 (the seat cushion main body 28 and the seat back main body 29) is restricted from moving to the “second slide section” in a state where the seat back main body 29 is positioned at the front rotation end position (forward from the initial position). Further, when the seat back body 29 is positioned forward from the initial position, the rotary connection pin 50 is fitted into the lower half of the slide groove 45 (and the portion above the slide restricting portion 22b). The distance from the contact portion of the restricting portion 22b to the rotary connection pin 50 is shortened. Therefore, when the vertical slide member 47 and the slide restricting portion 22b of the stopper portion 22 collide, the vertical slide member 47 (part located below the rotary connection pin 50) is not easily damaged.

Next, a case where the relative slide position of the upper rail 14 with respect to the lower rail 13 is in the “second slide section” will be described.
In order to move the upper rail 14 whose relative slide position with respect to the lower rail 13 is in the “first slide section (rear end position)” to the “second slide section”, the seat back body 29 is first moved while the operation lever 33 is rotated. Rotate to the initial position or backward from the initial position. Then, the lower end portion of the vertical slide member 47 moves upward from the upper surface of the stopper portion 22 (see FIG. 8).
Accordingly, by operating the loop handle in this state, the upper rail 14 is made slidable with respect to the lower rail 13, and then the upper rail 14 is slid forward with respect to the lower rail 13, so that the upper and lower slide members 47 are stopped. The relative slide position of the upper rail 14 shifts to the “second slide section” without colliding with the portion 22 (see FIG. 8). When the seat back main body 29 is located at the initial position, a minute gap is formed between the lower end surface of the vertical slide member 47 and the upper surface of the stopper portion 22. Therefore, if the seat back body 29 is moved to the initial position or the rear from the initial position, the upper rail 14 can smoothly slide in the “second slide section” with respect to the lower rail 13.
When the relative slide position of the upper rail 14 with respect to the lower rail 13 is in the “second slide section” and the lock lever 17 is positioned at the lock position, if the seat back main body 29 is rotated forward from the initial position, the vertical slide The lower end surface of the member 47 abuts against the upper surface of the stopper portion 22 (see FIG. 8). That is, since the downward sliding operation of the vertical slide member 47 is restricted, the seat back body 29 cannot be rotated forward from the initial position. In other words, the rotatable range of the seatback body 29 is limited to a “restricted range (which is narrower than the maximum rotation range)” obtained by excluding a range ahead of the initial position from the “maximum rotation range”. Therefore, for example, the seat back main body 29 cannot be rotated to the front rotation end position in a state where the upper rail 14 is located at the front end position.
Assuming that the upper rail 14 of the second row slide seat device 10 is slid to the front end position and the seat back main body 29 is positioned at the front rotation end position, the seat back main body 29 of the slide seat device 10 and the rear deck A large space in the front-rear direction is formed between them when viewed from above. If a large amount of luggage is placed on the rear deck in this state, the luggage (a part of the luggage) may fall into the space. Therefore, in this case, a large blindfold plate is required to cover the space. However, in the present embodiment, the seat back main body 29 can be rotated to the front rotation end position only when the upper rail 14 is located at the rear end position, and the seat is placed while the upper rail 14 is located at the rear end position so that a large amount of luggage can be placed on the rear deck. When the back body 29 is rotated to the front rotation end position, the space is reduced. Accordingly, it is possible to place a large amount of luggage on the rear deck while covering the space with a small blindfold plate (note that the upper rail 14 is slid to the front end position so that the seat back main body 29 is positioned at the initial position or behind the initial position). In this case, a large amount of luggage cannot be placed on the rear deck because the seat back body 29 is in the way).

The present invention described above is not limited to the above embodiment, and can be implemented with various modifications.
Even if the relative movement restricting member 20 and the slide rotation interlocking mechanisms 40 and 55 are provided only on the right side of the slide sheet apparatus 10, or the relative movement restricting member 20 and the slide rotation interlocking mechanisms 40 and 55 are provided on both the left and right sides of the slide sheet apparatus 10. Good.
The rotational position defining member 41 is omitted from the slide rotation interlocking mechanism 40 of the slide seat device 10 of the first embodiment, and the seat back frame 34 and the vertical slide member 47 are directly linked in the same manner as in the second embodiment. May be. On the other hand, the rotation position defining member 41 of the first embodiment is provided in the slide rotation interlocking mechanism 55 of the slide sheet device 10 of the second embodiment, and the rotation protrusion 35 and the upper and lower slide members are interposed via the rotation position defining member 41. 47 may be linked.
Further, the seat cushion frame 31 and the support members 44 and 56 may be configured as a part forming a part of the upper rail 14.
Furthermore, the slide sheet device 10 may be adopted as the first or third row or subsequent sheet device.

10. Slide seat device (vehicle slide seat device)
12 Slide mechanism 13 Lower rail 13a Lock groove 14 Upper rail 15 Ball 16 Retainer 17 Lock lever 18 Lock spring 18a Lock portion 20 Relative movement restricting member 21 Bottom surface fixing portion 22 Stopper portion 22a 22b Slide restricting portion 24 Lifting engagement member 25 Ceiling surface fixing Part 26 engaging part 27 contact wall part 28 seat cushion body (seat cushion)
29 Seat back body (seat back)
30 Reclining mechanism 31 Seat cushion frame (seat cushion) (fixing member)
32 Seat back connection 33 Operation lever 34 Seat back frame (seat back)
35 Rotating protrusion 35a Long hole 36 Pressing pin (seat back)
40 Slide rotation interlocking mechanism 41 Rotation position regulating member (rotation range regulating member)
41a 41b Pin connection hole 42 Rotation connection pin 44 Support member (fixing member)
45 Slide groove 47 Vertical slide member (rotation range regulating member)
47a 47b Pin connection hole 49 Rotation connection pin (Rotation range regulating member)
49a Small-diameter portion 49b Central large-diameter portion 50 Rotating connection pin (rotation range regulating member) (slide fitting portion)
50a Small diameter part 50b Central large diameter part 55 Slide rotation interlocking mechanism 56 Support member (fixing member)
58 Screw SP Biasing Spring

Claims (6)

A lower rail extending along a straight line fixed to the vehicle floor,
An upper rail slidably attached to the lower rail;
A seat cushion fixed to the upper rail;
A seat back connected to the seat cushion so as to be rotatable within a predetermined maximum rotation range ;
When the relative slide position of the upper rail with respect to the lower rail is in a predetermined first slide section, the seat back is allowed to rotate within the maximum rotation range, and the relative slide position is different from the first slide section. Is a slide rotation interlocking mechanism that restricts the rotation range of the seat back to a restriction range narrower than the maximum rotation range when in another second slide section ;
With
The slide rotation interlocking mechanism
A rotation range regulating member provided on at least one of the upper rail and a fixing member immovable with respect to the upper rail, which is movable relative to the upper rail and defines a rotation range of the seat back by contacting the seat back; ,
When the relative slide position fixed to the lower rail is in the first slide section, the relative movement operation of the rotation range restricting member with respect to the upper rail is not restricted, and the relative slide position is not in the second slide section. A relative movement restricting member that restricts the relative movement operation when there is,
With
The rotation range of the seat back defined by the rotation range restriction member changes according to a range in which the rotation range restriction member can move relative to the upper rail;
A vehicular slide seat device. The vehicle slide seat device according to claim 1 ,
At one end of the relative movement restricting member in the linear direction, the seat back is located at a rotational position other than the restriction range, and the relative slide position is an end of the first slide section on the second slide section side. The vehicle slide seat is provided with a slide restricting portion that restricts the relative slide position from shifting from the first slide section to the second slide section when the rotation range restricting member comes into contact with the second slide section. apparatus. The vehicle slide seat device according to claim 2 ,
The rotation range regulating member is
When the relative slide position is at the end of the first slide section on the second slide section side, a part of the slide section of the relative movement restricting member is partly movable. An upper and lower slide member capable of abutting on the part;
The rotation range of the seat back is defined by contacting the seat back, which is rotatably supported by at least one of the upper rail and a fixed member immovable with respect to the upper rail, and is rotatably connected to the upper and lower slide members. A rotational position defining member;
With
A vehicular slide seat device in which the seat back comes into contact with a portion located between a rotation center of the rotation position defining member and a rotation connection position with respect to the upper and lower slide members. The vehicle slide seat device according to claim 3 ,
When the relative slide position is at the end of the first slide section on the second slide section side, the lower part of the upper and lower slide members can contact the slide restricting section,
At least one of the upper rail and a fixed member that does not move with respect to the upper rail has a slide groove extending in the vertical direction,
When the seat back is located at a rotational position other than the restriction range and the relative slide position is located at the first slide section, the seat back is fitted to the lower half of the slide groove and above the slide restriction part. The vehicle slide seat apparatus which the said up-and-down slide member has the slide fitting part located. The vehicle slide seat device according to claim 3 or 4 ,
A vehicle slide seat device in which a contact position of the seat back with respect to the rotation position defining member is closer to the rotation center side than the rotation connection position. The vehicle slide seat device according to any one of claims 1 to 5 ,
A slide seat device for a vehicle, comprising: a lifting engagement member fixed to the upper rail and positioned immediately below the relative movement restricting member.

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