JP2016215801A - Ottoman and vehicular seat with ottoman - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem, in a construction where a link having four joints is extended or shrunk, that complication in its construction cannot be avoided and it has a risk that clothes are entangled between the links.SOLUTION: A ratchet 56b is formed on a sector gear 56 rotated along with rotation of an ottoman frame and a ratchet 58b meshing with the ratchet of the sector gear is formed on a lock gear 58. The ratchets on the sector gear and the lock gear prevent rotation of the sector gear in the direction to which the ottoman frame is pushed and allows rotation of the sector gear in the direction to which the ottoman frame is raised. The ratchet on the sector gear is formed longer than the ratchet on the lock gear and a part of the ratchet on the sector gear meshes with the ratchet on the lock gear. Therefore, if the ratchet part on the sector gear meshing with the ratchet on the lock gear is changed, a holding position of an ottoman would be adjusted and continuously set.SELECTED DRAWING: Figure 11

Description

  The present invention relates to an ottoman (legrest) provided at a front portion of a seat cushion and supporting a leg of a seated person, and a vehicle seat with an ottoman.

An ottoman (legrest) on which a seated person's leg is placed is known in order to keep the seated person in a comfortable sitting position, and the ottoman is usually attached to the front part of the seat cushion of the seat. If the ottoman is arranged on the seat cushion, the seated person can extend the leg to the ottoman at the seat cushion seating position, and can take a comfortable seating posture by placing the legs.
In the ottoman-equipped vehicle seat, the ottoman is rotatably attached to the front portion of the seat cushion, and is stored in a substantially vertical storage position (storage position) below the seat cushion when not in use by the ottoman adjusting device. In use, the seat cushion is rotated to a holding position substantially horizontal to the upper surface of the seat cushion.

In general, as an ottoman adjusting device, a configuration in which a link mechanism is extended and contracted is widely known. For example, in Japanese Patent Application Laid-Open No. 2014-004966, an ottoman adjusting device includes a four-bar link (link mechanism) including a first link to a fourth link, an extension mechanism for extending (deploying) the four-bar link, and a four-bar link. A tightening mechanism that pulls back (retracts) and a lock mechanism that restricts the movement of the four-bar link are configured.
In the four-bar link disclosed in Japanese Patent Laid-Open No. 2014-004966, the ottoman is placed on the footrest plate mounting portion, the front end of the first link is in the middle of the footrest plate mounting portion, and the third link is the rear end of the footrest plate mounting portion. Respectively. The second link and the third link are connected to each other at an intermediate portion thereof, the rear end of the second link is connected to the front upper portion of the mounting bracket on the lower surface of the seat cushion, and the rear end of the third link is connected to the front end of the fourth link. Is done. The rear end of the fourth link is connected to the lower part of the front end of the mounting bracket.

  A connecting pin (fourth link connecting pin) that connects the rear end of the fourth link to the lower front end of the mounting bracket is fixed to the lower front end of the bracket, and the rear end of the fourth link is pivotable to the fourth link connecting pin. Installed on. Further, the front and rear ends of the first to third links and the front end of the fourth link are pivotally connected by a connecting pin.

The lock mechanism has a lock spring (biasing member) made of a coiled torsion spring. The lock spring is wound around the fourth link connecting pin, and the lock spring cannot pivot the fourth link under a torsional force. Locked in. When the fourth link is locked so as not to pivot, the movement of the four-bar link is restricted, and the ottoman is locked in the retracted position or the holding position.
For example, when an operation knob or an operation bar provided on the side surface of the seat cushion is operated, the tip of the lock spring is pressed in a direction in which the torsional force of the lock spring is loosened (a direction in which the outer diameter of the lock spring is reduced). The lock on the fourth link is released. Then, the four-bar link (link mechanism) can be extended and contracted. For example, the four-bar link is extended under the extension mechanism, and the ottoman is pulled out from the storage position below the seat cushion to the holding position in front of the seat cushion. . Further, when the four-bar link is contracted under the contraction mechanism, the ottoman is pushed from the holding position in front of the seat cushion to the retracted position below the seat cushion.

  In the ottoman adjustment device configured to extend and contract the link mechanism, the holding position for holding the leg of the seated person and the retracted position under the seat cushion are easily adjusted by extending and contracting the link mechanism, so that arbitrary holding is possible. The position and storage position are set.

  In Japanese Patent Application Laid-Open No. 2006-188210, a holding stand is rotatably attached to the lower surface of the front portion of the seat cushion of the vehicle seat, and holds the seat cushion between the seat cushion and the vehicle floor. Here, the vehicular seat is a so-called tip-up seat in which the seat cushion is flipped up (chip-up) and the seat cushion is stored by matching the seat back with the seating surface.

  The tip-up seat is equipped with a tip-up lock mechanism between the rear end of the seat cushion and the lower part of the seat back, and the seat cushion is flipped up and folded substantially together with the seat back and the seating surface. Between the seating position and the storage position by a tip-up lock mechanism.

  The holding stand has leg portions on the left and right sides and has a substantially U shape in which the ends (lower ends) of the left and right leg portions are connected by a connecting portion. For example, the holding stand is integrally formed by bending a hollow pipe. The holding stand is attached to the lower surface of the seat cushion so that the free ends of the left and right legs can be pivoted.When the seat cushion is not retracted, that is, in the sitting position, the holding stand is raised on the floor to lift the seat cushion. Hold it almost horizontally so that it can be seated. When the seat cushion is stored (stored position), the holding stand is folded on the lower surface of the seat cushion that is aligned with the seat back and stored substantially horizontally with the lower surface of the seat cushion.

JP 2014-004966 A JP 2006-188210 A

In the vehicle seat with an ottoman, if the ottoman is not used at the seat cushion seating position, the ottoman is stored below the seat cushion.
However, in the vehicle seat (chip-up seat) in which the holding stand is attached to the lower surface of the front portion of the seat cushion, the holding stand stands on the floor at the seat cushion seating position. For this reason, the ottoman cannot be sufficiently pushed below the seat cushion by being obstructed by the holding stand and cannot be stored in a substantially vertical position. In addition, when the ottoman is not in use at the seat cushion sitting position, the ottoman is obstructed to restrict the sitting posture with the legs pulled.

  Furthermore, even when the seat cushion is retracted (bounce-up position), the holding stand is folded down on the lower surface of the seat cushion and is stored substantially horizontally with the seat cushion. Therefore, the ottoman cannot be stored below the seat cushion because of being obstructed by the holding stand. .

Therefore, in a tip-up seat with an ottoman, the ottoman is usually formed separately from the seat cushion and is configured to be removable from the seat cushion. The ottoman is removed from the seat cushion when the seat cushion is tipped up (bounced up), and is attached to the seat cushion when the seat cushion is returned to the seating position.
Also, if the seat cushion is in the seating position and the ottoman is not used, the ottoman is removed and attached to the seat cushion when used in order to avoid the seating posture being restricted by the ottoman.
However, the ottoman cannot be quickly attached and detached, which impairs the convenience of the ottoman. In addition, in a detachable ottoman, complication of the configuration is inevitable.

  If the seat cushion is held at the seating position by the tip-up lock mechanism with increased rigidity, the seat cushion on which the seated person is seated can be held at the substantially horizontal seating position without the holding stand. If there is no holding stand, the ottoman can be stored below the seat cushion without being obstructed by the holding stand, and the ottoman can be configured integrally with the seat cushion.

However, as disclosed in Japanese Patent Application Laid-Open No. 2014-004966, the Ottoman adjusting device configured to extend and contract the first link to the fourth link of the four-bar link (link mechanism) to draw out and pull back the ottoman, the configuration is complicated. Inevitable.
Moreover, there is a possibility that the clothes of the seated person may be caught between the first link to the fourth link that are pulled out or pulled back.

SUMMARY OF THE INVENTION An object of the present invention is to provide an ottoman that is simple in configuration and in which a holding position and a storage position are adjusted and set without involving a seated person's clothes.
Another object of the present invention is to provide an ottoman-equipped vehicle seat in which the configuration of the ottoman is simple and the holding and storage positions of the ottoman are adjusted and set without involving the seated person's clothes.

In the present invention, a ratchet is formed on the sector gear rotated as the ottoman frame rotates, and a ratchet that meshes with the ratchet of the sector gear is formed on the lock gear. The sector gear ratchet is formed longer than the lock gear ratchet, and the holding position of the ottoman is adjusted and set by changing the ratchet portion of the sector gear meshing with the lock gear ratchet.
That is, in order to achieve the above object, according to the present invention, the seat cushion is pivotally attached to the front portion of the seat cushion, the holding position where the seated person's leg is placed, and the storage position where the seat cushion is pushed in and stored in the lower surface direction. In the ottoman that is adjusted and set by the ottoman adjusting device, the ottoman adjusting device is rotated integrally with the connecting rod that is pivotably mounted between the left and right side frames of the seat cushion, and is lifted and pushed in. The ottoman position is adjusted and set by the ottoman frame, and a ratchet formed on a part of the peripheral surface. The ottoman is pivotally attached to one of the side frames of the seat cushion. The sector gear that rotates as the ottoman frame rotates, and the -A lock gear that has a ratchet that can mesh with the ratchet of the gear on its peripheral surface and is rotatably attached to one of the side frames of the seat cushion, and a biasing force in the direction in which the ratchet of the lock gear meshes with the ratchet of the sector gear The ratchet of the sector gear and lock gear prevents the rotation of the sector gear in the direction of pushing the ottoman frame, locks the sector gear, and lifts the ottoman frame. The sector gear ratchet is formed longer than the lock gear ratchet, a part of the sector gear ratchet meshes with the lock gear ratchet, and the ratchet at one end of the sector gear is the lock gear ratchet. From the position where it meshes with the sector In the range where the ratchet at the other end of the gear engages with the ratchet of the lock gear, the sector gear is prevented from rotating in the direction in which the ottoman frame is pushed in, the sector gear is locked, and the ottoman frame is pulled up. The holding position is adjusted and set, the lock gear is rotated against the biasing force of the biasing member, the ratchet of the lock gear and sector gear is released, the sector gear is locked off, and the ottoman frame is pushed in Rotate the sector gear in the direction, rotate the lock gear within the range where the ratchet of the sector gear and lock gear can be meshed, mesh the lock gear ratchet with the sector gear ratchet, lock off the sector gear, and ottoman The ottoman holding position is adjusted and set in the direction in which the frame is pushed. ing.

In the present invention, the sector gear is rotated with the rotation of the ottoman frame, and the holding position of the ottoman is adjusted and set by changing the ratchet portion of the sector gear meshing with the ratchet of the lock gear by the rotation of the sector gear. The ottoman position can be adjusted and set with a simple configuration.
Also, since the holding position of the ottoman is adjusted and set by the rotation of the sector gear accompanying the rotation of the ottoman frame, the link is not pulled out or pulled back, so in the adjustment and setting of the ottoman holding position, There is no risk of getting caught in the clothes of the seated person.

The side view of the vehicle seat with an ottoman which concerns on one Example of this invention is shown. The perspective view of a seat cushion frame is shown. The perspective view of the ottoman integrated in a seat cushion frame is shown. 1 shows a schematic exploded perspective view of an ottoman. The exploded perspective view of the right part of an ottoman is shown. An exploded perspective view of an Ottoman frame (Ottoman frame) and a left part is shown. (A) is a perspective view of the right bracket, (B) is a perspective view of the lock release lever. (A) is a plan view of the sector gear, and (B) is a plan view of the lock gear. (A) (B) shows the top view of the ottoman adjustment device seen from the arrow A and B of FIG. A schematic diagram of a series of Ottoman movements as seen from the right is shown. (A) and (B) are respectively plan views of the sector gear, the lock gear, and the lock release lever at the storage position C1 and the intermediate position B of the substantially vertical ottoman. The top view of the sector gear in the holding position A of a ottoman substantially horizontal with a seat cushion, a lock gear, and a lock release lever is shown. The top view of the sector gear, the lock gear, and the lock release lever in the storage position C2 substantially horizontal to the lower surface of the seat cushion is shown. (A) is a plan view of the sector gear, the lock gear, and the lock release lever when the lock release lever is pulled up at the holding position A, and (B) is a view when the ottoman is pushed in from the holding position A. The top view of a sector gear and a lock gear is shown. FIG. 9A is a plan view of an ottoman adjusting device corresponding to FIG. 9B in the second embodiment, and FIG. 9B is a plan view of a sector gear.

  A ratchet is formed on the sector gear rotated with the rotation of the ottoman frame, and a ratchet meshing with the ratchet of the sector gear is formed on the lock gear. The ratchet of the sector gear and the lock gear prevents and locks the sector gear in the direction in which the ottoman frame is pushed in, and allows the sector gear to rotate in the direction in which the ottoman frame is pulled up. The sector gear ratchet is longer than the lock gear ratchet, and a part of the sector gear ratchet meshes with the lock gear ratchet. The holding position is adjusted and set continuously.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a vehicle seat with an ottoman according to an embodiment of the present invention, and FIG. 2 is a perspective view of a seat cushion frame. The front, rear, left, and right refer to the directions viewed from the driver seated on the driver seat, and are indicated by Fr, Rr, L, and R.

  As shown in FIGS. 1 and 2, the vehicle seat 10 includes a base member, for example, a seat back 12 attached to a riser 11, and a seat cushion 14 whose rear end is rotatably connected to the seat back. It is arranged on a floor (vehicle floor) 16. A headrest 12h is provided at the upper end of the seat back 12 so as to be movable up and down. An ottoman 50 is rotatably attached to the front end portion of the seat cushion 14.

  At the seating position of the seat cushion 14, for example, the occupant can take a comfortable sitting posture by extending his / her leg to the ottoman 50 at a position (holding position) substantially horizontal to the seat cushion and placing the legs.

  In the embodiment, the fixed rail of the slide rail device 20, that is, the lower rail 20 Lo is bolted to the floor 16 using a bracket, and the base member (the riser 11) is disposed on the movable rail, that is, the upper rail 20 Up, and the seat 10 is configured to be movable in the front-rear direction.

  The seat back 12 and the seat cushion 14 both have a seat pad made of a foam molding material such as urethane foam on a frame (seat back frame, seat cushion frame) serving as a skeleton, and the seat pad is covered with a breathable trim cover. Each is formed to cover.

The frame of the seat cushion 14 (seat cushion frame) and the frame of the seat back 12 (seat back frame) are configured as follows, for example.
The frame (seat cushion frame) of the seat cushion 14 has a pair of left and right side frames 14S (14S-R, 14S-L), a front frame 14Fr, and a rear frame 14Rr, and the left and right side frames press steel plates. Processed and formed. In the embodiment, the front frame 14Fr and the rear frame 14Rr are both hollow connecting rods (front rods, rear rods) made of steel pipes, with the front rod at the front end of the left and right side frames and the rear rod between the left and right side frames. It is connected to each part. Therefore, the seat cushion frame is formed in a substantially rectangular shape.

The frame of the seat back 12 (seat back frame) is also configured in the same shape as the seat cushion frame.
That is, the seat back frame has a pair of left and right side frames 12S, an upper frame 12Up, and a lower frame (not shown), and the left and right side frames are formed by pressing a steel plate. For example, the upper frame 12Up and the lower frame are both an upper rod and a lower rod made of steel pipe, the upper rod connects the upper ends of the left and right side frames 12, and the lower rod connects the middle portion, and the seat back frame is substantially rectangular. Configured.

  The riser 11 has a pair of left and right side frames 11S, and the lower ends of the left and right side frames 12 of the seat back frame are rotatably connected to the side frames of the riser.

In the embodiment, a reclining device (not shown) is provided at the lower end of the side frame of the seat back frame, and the reclining shaft 12a is disposed between the pair of side frames 11S and also serves as a pivot for the seat back. .
Since the reclining device is mounted on the seat 10, the seat back 12 is set and locked at an arbitrary tilting position.

The rear half of the pair of left and right side frames 14S-L, 14S-R of the seat cushion frame is formed, for example, in a shape that curves upward as it goes rearward. The rear ends of the side frames 14S-L and 14S-R are connected to the side frame 12S by pins (rotating shafts) 14p at a height of about 1/3 from the bottom with respect to the total length of the side frame 12S of the seat back frame, for example Has been. Therefore, the seat cushion frame can be rotated with respect to the seat back 12 around the pin 14p as a rotation center.
In the present invention, the seat 10 is a tip-up seat, and the seat cushion 14 is flipped up (tip-up) as shown by a one-dot chain line in FIG.

  The seat 10 includes two tip-up lock mechanisms 30 for restricting the rotation of the seat cushion 14 with respect to the seat back 12, and the tip-up lock mechanisms are attached to the left and right sides between the seat back and the seat cushion, respectively. The load of the seated person transmitted through the cushion is shared by the left and right sides. Since the two tip-up lock mechanisms 30 share the load of the occupant on the left and right sides, the load of the occupant does not act on both the left and right sides. Therefore, the load of the seated person on the seat cushion can be received without damaging the tip-up lock mechanism 30, and the seat cushion 14 can be held at a substantially horizontal seating position without using a holding stand.

FIG. 3 shows a perspective view of the ottoman assembled in the seat cushion frame.
The ottoman 50 is rotatably attached to the front ends of the left and right side frames 14S-L, 14S-R of the seat cushion frame.
The ottoman 50 has an ottoman frame 70F. The ottoman frame has left and right leg portions 70F-L and 70F-R, and has a substantially U shape in which the ends of the left and right leg portions are connected by a connecting portion 70F-C. For example, the hollow pipe is bent and integrally formed.

4 is a schematic exploded perspective view of the ottoman, FIG. 5 is an exploded perspective view of the right portion of the ottoman, and FIG. 6 is an exploded perspective view of the ottoman frame (ottoman frame) and the left portion.
The ottoman 50 includes an ottoman adjusting device 52 that adjusts the rotational position of the ottoman. The ottoman adjusting device includes left and right brackets 54L and 54R, a sector gear 56, a lock gear 58, a gear presser plate 60, a lock release lever 62, and two attachments. Force members 64a and 64b are provided.

First, each component of the ottoman adjusting device 52 will be described sequentially.
As shown in FIGS. 4 to 6, the left and right brackets 54 </ b> L and 54 </ b> R are formed into a rectangular box shape with one end opened by, for example, pressing a steel plate. The left bracket 54L has a wide front half, and a through hole 54L-1 is formed in the wide front half.

  FIG. 7A shows a perspective view of the right bracket. As can be seen from FIG. 7A in addition to FIGS. 4 to 6, three through holes 54R-1 to 54R-3 are formed in a substantially horizontal row in the upper half of the right bracket 54R. One through hole 54R-4 and two substantially rectangular through holes 54R-5 and 54R-6 are formed in the middle part, and four through holes 54R-7 to 54R-10 are formed in the lower half part. Yes. Furthermore, a part of the lower end of the right bracket 54R is bulged, and one through hole 54R-11 is formed in the bulged portion.

FIG. 7B is a perspective view of the lock release lever.
As shown in FIG. 5 and FIG. 7 (B), the unlocking lever 62 has, for example, one end formed into a large stepped shape by pressing a steel plate so that the left and right ends have a stepped substantially rectangular shape. A lever 62a extending upward is integrally formed at the right end), and an upper end of the lever is bent at a right angle to form a locking piece 62a ′.
Further, the extending portion 62b extending upward is formed integrally with the other end (left end), the through hole 62-12 is formed at the tip of the other end, and the through hole 62-13 is formed at the tip of the extending portion. Yes. A through hole 62-6 is formed in the extending portion 62b, and a through hole 62-6 is formed below the through hole 62-6. The through hole 62-6 is substantially rectangular and serves as a guide groove.

  The urging member 64b is, for example, a tension coil spring, and its ends 64b-1 and 64b-2 are engaged with the lock release lever 62 and the right bracket 54R, respectively, and stretched between the lock release lever and the bracket. Is done.

8A is a perspective view of the sector gear, and FIG. 8B is a plan view of the lock gear.
As shown in FIGS. 5 and 8A, the sector gear 56 has a substantially circular shape having a through hole 56-3 serving as a shaft support hole, and a ratchet 56b is formed on a part of the peripheral surface. An engaging portion 56c is provided on the peripheral surface of the sector gear adjacent to one end (clockwise left end tooth). The engaging portion 56c is, for example, a partial circular protrusion that is less than a semicircle protruding from the peripheral surface of the sector gear. Furthermore, a substantially L-shaped portion 56d is formed on the side opposite to the ratchet 56b, and an engaging portion 56d-1 that rises substantially perpendicularly from the peripheral surface on the engaging portion 56c side is formed on the side surface of the substantially L-shaped portion. Yes.

Two engaging portions 56e and 56f are formed between the substantially L-shaped portion 56d and the ratchet 56b.
For example, the engaging portion 56e adjacent to the substantially L-shaped portion 56d includes a substantially U-shaped groove 56e-1 having the substantially L-shaped portion 56d behind, and a groove-side surface 56e positioned in front of the groove. -21 rises from the circumferential surface at a substantially right angle, and the opposite surface 56e-22 has a projection 56e-2 which is a gentle slope. Further, in the engaging portion 56f adjacent to the ratchet 56b, the surface 56f-1 on the ratchet 56 side is a protrusion that rises substantially perpendicular to the peripheral surface of the sector gear. Here, the circumferential surface of the sector gear between the engaging portion 56f and the engaging portions 56f and 56e from the right end of the ratchet 56b is the same as the root circle 56o2 having a smaller diameter than the tip circle 56o1 of the ratchet 56b. The surface 56f-2 of the engaging portion 56f on the engaging portion 56e side is a gentle surface that is absorbed by the peripheral surface of the root circle 56o2. Reference numeral 56o indicates a base circle.

  In FIG. 8A, as shown in the AA cross section, the surface is pressed in an annular shape by, for example, pressing, and a corresponding annular protrusion 56 'is formed on the back surface of the sector gear.

As shown in FIGS. 5 and 8B, the lock gear 58 has three sides 58a1 to 58c1, and the tip of the lock gear 58 has a bifurcated T shape. A through hole 58-2 serving as a shaft support hole is formed in the substantially central portion, and a ratchet 58b that meshes with the ratchet 56b of the sector gear is formed on the peripheral surface adjacent to the end of the side 58b1. For example, the tip of the side 58b1 where the ratchet 58b is formed and the tip of the other side 58a1 sandwiching the ratchet are both hook-shaped, and the two hooks 58g1 and 58g2 regulate the rotation of the sector gear 56. Or function as a lock to prevent. The ratchet-side lock portion (hook) 58g1 has an inclined surface 58g1-1 at the tip, and the ratchet-side lock portion (hook) 58g2 surface (right surface) 58g2-1 has an inclined surface 58g2-1. It has become. A through hole 58-7 is formed at the tip of the remaining side 58c1.
The cylindrical boss 58-6 is projected from the lock gear 58 below the ratchet 58b, for example, by punching, and is formed on the surface thereof to become a guide pin.

  Sector gear and lock gear ratchets 56b and 58b are formed with teeth to prevent the sector gear from rotating in the direction of pushing the ottoman frame and to allow the sector gear to rotate in the direction of lifting the ottoman frame. Has been. The sector gear ratchet 56b is formed longer than the lock gear ratchet 58b, and a part of the lock gear ratchet meshes with the lock gear ratchet.

As shown in FIG. 5, the urging member 64 a is, for example, a torsion spring having two ends 64 a-1 and 64 a-2, and one end of the biasing member 64 a is locked in the lock gear through hole 58-7.
In the embodiment, the through hole 58-7 is formed in a substantially elliptical shape, but it is sufficient that the one end 64a-1 of the torsion spring is locked, and the shape is not limited to a substantially elliptical shape.
For example, the gear presser plate 60 is formed by pressing a steel plate into a plate shape having three stepped legs, and a through hole 60-2 serving as a shaft support hole is formed in the upper portion thereof. , 60-8, 60-9 are formed at the tips of the three legs, respectively.

FIGS. 9A and 9B are plan views of the ottoman adjusting device as seen from the arrows A and B in FIG.
The ottoman adjusting device 52 is assembled as follows, for example.
First, the right bracket 54R is welded to the right front rod (connection rod, front frame) 14Fr of the seat cushion frame.
The lock release lever 62 is disposed on the outside (right side) of the bracket 54R, and the rivet 61-11 is inserted into the through hole (shaft support hole) 62-11 of the lock release lever and the through hole 54R-11 of the bracket and caulked. Thus, the lock release lever is attached to the outside of the bracket 54R so as to be rotatable about the rivet 61-11 as a rotation axis.

  After the lock release lever 62 is attached to the outside of the bracket 54R, the biasing member (torsion spring) 64a, the sector gear 56, and the lock gear 58 are attached to the inside (left side) of the bracket 54R using the gear presser plate 60.

That is, the mounting bolt 61-3 is inserted into the bracket through hole 54R-3 and the sector gear through hole (shaft support hole) 56-3 and crimped, and the sector gear 56 attaches the mounting bolt 61-3 to the bracket 54R. It is attached so as to be rotatable as a rotation shaft.
Then, as shown in FIG. 9A, the biasing member (torsion spring) 64a has one end 64a-1 at the lock gear through hole 58-7 and the other end 64a-2 at the through hole 54R- in the bracket 54R. 7 are respectively disposed between the bracket 54R and the lock gear.
The rivet 61-2 is inserted through the bracket through hole 54R-2 and the lock gear through hole 58-2 (shaft support hole). Here, the sector gear 56 and the lock gear 58 are arranged in the same row so that the ratchets 56b and 58b face each other so that they can be engaged with each other, and the lock gear is urged by a spring 64a in a direction in which the ratchet 58b meshes with the ratchet 56b of the sector gear. The

  The urging member 64a is not limited to a torsion spring as long as it generates an urging force that urges the lock gear 58 in a direction in which the lock gear ratchet 58b meshes with the sector gear ratchet 56b.

  Then, the rivets 61-1, 61-8, 61-9 are inserted into the through holes 54R-1, 54R-8, 54R-9 of the bracket while the through holes 60-2 of the gear presser plate are inserted into the rivets 61-2. Are inserted into the through holes 60-1, 60-8, 60-9 of the gear presser plate and caulked. Then, the rivet 61-2 that has been inserted through the through hole (shaft support hole) 60-2 of the gear presser plate is caulked, and the lock gear 58 is rotatably attached using the rivet 61-2 as a rotation shaft.

Thus, the gear presser plate 60 covers the sector gear 56 and the lock gear 58 and is attached to the bracket 54R from the opening side (left side), and the sector gear and the lock gear rotate between the gear presser plate 60 and the bracket 54R. Arranged as possible.
Here, the boss 58-6 of the lock gear protrudes through the substantially rectangular through hole 54R-6 of the bracket.

  As shown in FIGS. 5 and 9B, the lock release lever 62 is disposed outside the bracket 54R, and the rivet 61-11 is a through hole (shaft support hole) 62-11 of the lock release lever. The through hole 54R-11 is inserted and caulked. Accordingly, the lock release lever 62 is rotatably attached to the bracket 54R from the outside.

  The substantially rectangular through hole 54R-5 of the bracket described above is a punching hole for forming the locking piece 54R-5 '. The biasing member (tensile coil spring) 64b has one end 64b-1 at the lock release lever through hole (locking hole) 62-12 and the other end 64b-2 at the locking piece 54R-5 '. Each is latched and stretched between the lock release lever and the bracket 54R. Therefore, an urging force Pb that urges the lock release lever 62 in the clockwise direction in FIG. 9B around the rivet 61-11 that is the rotation shaft is applied to the lock release lever.

  Note that the end of the lock release lever 62 formed with a locking hole 62-12 at the tip is in a direction away from the bracket 54R in consideration of the locking of the one end 64b-1 of the biasing member 64b to the locking hole. It is formed into a slightly stepped shape (see FIG. 7B).

  When the lock release lever 62 is attached to the bracket 54R, the lock gear boss 58-6 protruding from the bracket through hole 54R-6 is inserted into the lock release lever through hole 62-6. Therefore, the boss 58-6 of the sector gear is pressed and engaged with the upper edge of the substantially rectangular through hole of the unlocking lever by the urging member 64b.

  The lock release lever 62 is pulled up to release the lock, and rotates counterclockwise in FIG. 9B about the rivet 61-11 as a rotation axis. The urging member 64b is sufficient as long as it generates an urging force Pb that resists lifting of the lock release lever 62, in other words, an urging force that urges the lock release lever clockwise in FIG. 9B. It is not limited to a spring.

As shown in FIG. 6, one end 78a of the torsion bar 78 is bent zigzag, and the other end 78b is bent substantially at a right angle. The torsion bar 78 is laid between the front rod 14Fr and the side frame 14S-L of the seat cushion frame in a twisted state, whereby a torsional force is applied to the front rod.
For example, one end 78a of the torsion bar bent zigzag is inserted into the inside from the left end of the front rod 14Fr and locked (to a deformed portion of the collar described later). Then, the front end of the torsion bar is locked to the left side frame 14S-L of the seat cushion frame while twisting the torsion bar 78 while twisting the substantially right-angled bent end 78b. A torsional force is applied to the rod 14Fr. By this torsional force, the ottoman frame 70F welded to the front rod 14Fr is urged toward the lower surface of the seat cushion.

  Referring to the ottoman frame 70F, as shown in FIGS. 4 and 6, the unthreaded ends of the flanged pins 72L and 72R that are not threaded at one end and threaded at the other end are ) Inserted into the left and right leg portions 70F-L and 70F-R of the ottoman frame, and the pins are welded to the leg portions. The collars 74L and 74R are put on the threaded ends of the pins 72L and 72R, and the nuts 76L and 76R are screwed onto the threaded ends, so that the collar is rotatably attached to the ottoman frame 70F. Then, the front rod 14Fr is welded to the collars 74L and 74R in the orthogonal direction. Then, the ottoman 50 is formed by covering the ottoman frame 70F with a seat pad and covering the pad with a trim cover.

Since the front rod 14Fr is welded to the collars 74L and 74R in a direction orthogonal to each other, the ottoman frame 70F rotates about the front rod as a rotation axis as the front rod rotates.
The welded portion of the front rod 14Fr is deformed into a shape corresponding to the arcs of the collars 74L and 74R so as to ensure a sufficient welded area.

  As described above, the sector gear 56 is rotatably attached to the right bracket 54R, and the right end of the front rod 14Fr is a protrusion 56 ′ on the back surface of the sector gear as shown in the AA cross section of FIG. It is welded to. The left end of the front rod 14Fr is inserted into the left bracket through hole 54L-1, and the front rod is disposed between the left and right brackets 54L and 54R. The front rod 14Fr is welded to the collars 74L and 74R in the orthogonal direction.

  That is, the front rod 14Fr is welded to the sector gear 56, and the ottoman frame 70F is welded to the front rod, so that the sector gear, the front rod, and the ottoman frame can be integrally rotated. Therefore, if the sector gear 56 is locked, the ottoman frame 70F, that is, the ottoman 50 is also locked. On the contrary, if the sector gear 56 is locked off and can be rotated, the ottoman frame 70F, that is, the ottoman 50 is pulled up or pushed (toward the lower surface of the seat cushion) and rotated around the front rod 14Fr. If it moves, the sector gear 56 is rotated in accordance with the rotation of the ottoman frame (ottoman), thereby adjusting and setting the position of the ottoman 50.

Hereinafter, adjustment and setting of the position (rotation position) of the ottoman 50 by the ottoman adjustment device 52 will be described.
FIG. 10 shows a schematic diagram of a series of Ottoman movements as viewed from the right. FIG. 10 corresponds to a series of reversed ottoman movements as viewed from the left shown in FIG.
In the present invention, as shown in FIGS. 1 and 10, the ottoman 50 is positioned substantially horizontally with the seat cushion 14 in front of the seat cushion so that the leg of the seated person is placed on the ottoman 50 and retracted below the seat cushion. It is comprised so that rotation between the positions C is possible.

  In the embodiment, as the storage position C, a storage position C1 for storing the ottoman 50 substantially perpendicular to the seat cushion and a storage position C2 for storing the ottoman 50 substantially horizontally with the lower surface of the seat cushion beyond the storage position C1 can be set. It has become.

The holding position is not limited to the holding position A that is substantially horizontal to the seat cushion 14, but may be any holding position that is inclined with respect to the seat cushion 14 within a certain range from the holding position A, for example, to the intermediate position B. Can be set.
In other words, the substantially horizontal holding position A can be regarded as an inclined position with zero inclination, and the holding position inclined with respect to the seat cushion 14 between the holding position A and the intermediate position B can be arbitrarily set.

  FIGS. 11A and 11B are plan views of the sector gear, the lock gear, and the lock release lever at the storage position C1 and the intermediate position B of the substantially vertical ottoman, respectively. FIG. 12 is a plan view of the sector gear, the lock gear, and the lock release lever at the holding position A of the ottoman substantially horizontal to the seat cushion.

For example, the ottoman 50 is normally located at the substantially vertical storage position C1, and this position (storage position C1) is set as the reference position.
First, the movement in the direction of pulling up the ottoman 50 from the reference position (storage position C1) will be described.

  In FIG. 11A, the urging force Pa of the urging member (torsion spring) 64 a is applied to the lock gear 58. In other words, an urging force Pa in a direction to engage the lock gear ratchet 58b and the sector gear ratchet 56b is applied to the lock gear, and the lock gear is urged counterclockwise around the rotation shaft (rivet) 61-2.

Further, an urging force Pb that urges the lock release lever 62 in the clockwise direction around the rivet 61-11 that is a rotating shaft is applied to the lock release lever by an urging member (tensile coil spring) 64b.
Here, the boss 58-6 of the lock gear protruding from the through hole 54R-6 of the bracket 54R is inserted into the through hole 62-6 of the lock release lever. Therefore, the boss 58-6 of the sector gear is pressed and engaged with the upper edge of the substantially rectangular through hole 62-6 of the lock release lever, even the left end of the upper end, by the urging force Pb. When the boss 58-6 is pressed and engaged with the upper edge of the through hole 62-6, the lock release lever 62 is maintained at a substantially horizontal initial position.

  The movement of the sector gear 56 is guided by the engagement of the guide pin (boss) 58-6 of the sector gear and the guide groove (through hole) 62-6 of the lock release lever.

  The sector gear engaging portion (projection) 56f has a surface 56f-1 rising substantially perpendicularly from the peripheral surface of the sector gear on the ratchet side, and this surface contacts the right end of the lock gear ratchet 58b at the storage position C1. It is touched. Therefore, the rotation of the sector gear 56 in the clockwise direction is restricted. For this reason, the pushing (clockwise rotation) of the ottoman frame 70F is restricted, and the ottoman 50 is stored and maintained in the storage position C1.

  When the ottoman 50 is pulled up from the storage position C1, the sector gear rotates counterclockwise while the ratchet 58b of the lock gear is brought into sliding contact with the peripheral surface of the sector gear 56 in FIG. Then, when the sector gear 56 rotates to a position where a series of teeth at one end (right end) of the sector gear ratchet 56b is opposed to the lock gear ratchet 58b, as shown in FIG. 11B, the ratchets 56b and 58b are immediately moved. As a result, the sector gear cannot be rotated clockwise and is locked. This position is the intermediate position B.

  At the intermediate position B, the ratchets 56b and 58b are screwed together to prevent the sector gear from rotating in the clockwise direction, that is, the ottoman 50 from rotating downward. Without rotating, the intermediate position B corresponds to the most inclined holding position (lowermost holding position).

  The engagement of the ratchets 56b and 58b prevents the sector gear from rotating clockwise, but allows the counterclockwise rotation of the sector gear, so that the ottoman 50 can be pulled up. When the ottoman 50 is pulled up, the sector gear 56 rotates counterclockwise as the ottoman 50 is pulled up. Then, the teeth of the sector gear ratchet 56b are shifted one by one and meshed with the lock gear ratchet 58b, and the ottoman 50 is pulled up step by step. Therefore, the sector gear 56 can be locked continuously until a series of teeth on the other end (left end) of the ratchet 56b of the sector gear engage with the ratchet of the lock gear.

  When the series of teeth at the other end (left end) of the sector gear ratchet 56b faces and meshes with the lock gear ratchet 58b, the sector gear wall surface 56d-1 comes into contact with the lock gear lock 58g2. Rotation of the sector gear, that is, lifting of the ottoman 50 is prevented. In a position where the substantially vertical wall surface 56d-1 of the sector gear abuts against the lock portion (hook) 58g2 of the lock gear and the rotation of the sector gear 56 is prevented, the ottoman 50 moves to a position substantially horizontal to the seat cushion 14. It is pulled up, and this position corresponds to the holding position A (the uppermost holding position) (see FIG. 12).

Thus, between the holding position A and the intermediate position B, the ratchets 56b and 58b are screwed together to lock the sector gear 56 and the ottoman 50 cannot be pushed in, and the ottoman can be pulled up. By pulling up, a holding position having an arbitrary inclination angle can be set between the holding position A and the intermediate position B. Therefore, the seated person can sit in a comfortable posture with the legs placed on the ottoman 50 by setting the holding position to a desired inclination.
Also, the sector gear ratchet 56b meshed with the lock gear ratchet 58b is shifted one by one while the sector gear is rotated to raise the ottoman 50 step by step, finely adjusting the position where the inclination is different and finely holding the holding position. Can be set continuously.

Next, the movement in the direction in which the ottoman 50 is pushed in from the reference position (storage position C1) will be described. FIG. 13 is a plan view of the sector gear, the lock gear, and the lock release lever at the storage position C2 that is substantially horizontal to the lower surface of the seat cushion.
At the storage position C1 shown in FIG. 11A, the sector gear engaging portion (protrusion) 56f has a surface 56f-1 rising substantially perpendicularly from the circumferential surface of the sector gear on the ratchet side, and at the storage position C1. The surface of the engaging portion 56f that rises at a substantially right angle is in contact with the right end of the ratchet 58b of the lock gear, thereby restricting the rotation of the sector gear 56 in the clockwise direction.
However, the sector gear and lock gear ratchets 56b and 58b are locked to prevent the sector gear from rotating in the direction in which the ottoman frame is pushed in, and to allow the sector gear to rotate in the direction in which the ottoman frame is pulled up. Is formed. And the tooth surface of the ratchet 58b which contact | abuts to the surface 56f-1 which stood up at the substantially right angle of the engaging part 56f is a circular arc surface.

  Therefore, when the ottoman 50 is pushed in strongly at the storage position C1, the engaging portion 56f presses the ratchet 58b, and the lock gear 58 is slightly rotated clockwise around the rotation shaft (rivet) 61-2 to thereby ratchet. 58b escapes to a position where it does not contact the sector gear engaging portion 56f.

If the ottoman 50 is pushed hard and the check 58b escapes to a position where it does not come into contact with the engaging portion 56f, the sector gear 56 can be rotated clockwise, and the ottoman 50 can be pushed toward the lower surface of the seat cushion. When the ottoman 50 is pushed in, the sector gear 56 is rotated in the clockwise direction along with the pushing, and eventually, the projection 56e-2 of the engaging portion 56e on the sector gear circumferential surface contacts the locking portion (hook) 58g1 of the lock gear. Be touched.
However, since the protrusion 56e-2 has a gentle surface 56e-22 on the engaging portion 56f side, the lock portion 58g1 is pushed, the lock portion enters the substantially U-shaped groove 56e-1, and the back of the groove The surface 56d ′ abuts against the lock portion, and the sector gear is prevented from rotating clockwise.

As shown in FIG. 13, the lock portion 58g1 enters the substantially U-shaped groove 56e-1, and the surface 56d 'behind the groove comes into contact with the lock portion, thereby preventing the sector gear from rotating clockwise. The ottoman 50 cannot be pushed any further.
On the groove 56e-1 side, the surface 56e-21 of the protrusion 56e-2 rises at a substantially right angle from the peripheral surface of the sector gear. Therefore, the surface 56e-21 abuts against the lock portion 58g1, thereby preventing the sector gear 56 from rotating counterclockwise, preventing both lifting and pushing, and the ottoman 50 is maintained at this position. . This position is a storage position C2 that is substantially horizontal to the lower surface of the seat cushion, and the ottoman is stored in the storage position C2.

  As shown in FIG. 1, not only when the seat cushion 14 is in a substantially horizontal seating position, but when the seat cushion is flipped up (chip-up) and folded by the seat back and the seating surface and locked. Also, the ottoman 50 is stored in the storage position C2.

In order to return the ottoman 50 from the storage position C2 to the storage position C1, the ottoman 50 may be pulled up strongly.
The lock portion 58g1 has a slope at the tip of a ratchet 58b side surface (left surface) 58g1-1. Therefore, when the ottoman 50 is pulled up strongly, the substantially perpendicular surface 56e-21 of the projection 56e-2 of the sector gear strongly presses the inclined surface 58g1-1 of the lock portion 58g1, and the lock gear 58 is rotated. (Rivet) Rotating clockwise around 61-2, the lock gear 58g1 of the lock gear is released from the groove 56e-1 of the sector gear. Then, the sector gear 56 can be rotated counterclockwise without being obstructed by the lock portion 58g1, and the ottoman 50 is freely pulled out (pulled up).

  When the ottoman 50 is pulled up and the sector gear 56 is rotated clockwise until the engaging portion 56f of the sector gear engages with the right end tooth of the ratchet 58b of the lock gear, the storage position shown in FIG. The ottoman 50 is pulled up to C1 and stored in the storage position C1.

  Next, the movement of pushing the ottoman 50 from the holding position A and returning it to the storage position C1 will be described. The sector gear and lock gear ratchets 56b and 58b prevent the sector gear 56 from rotating in the direction in which the ottoman frame 70F is pushed in, and lock the sector gear. Therefore, it is necessary to operate the lock release lever 62 to lock the sector gear 56 off.

  That is, in FIG. 12 showing the holding position A, the lock release lever 62 is pulled up. Then, the edge of the guide groove (through hole) 62-6 of the lock release lever presses the guide pin (boss) 58-6 of the lock gear. Then, the lock gear 58 rotates clockwise around the rotation shaft (rivet) 61-2, the lock gear ratchet 58b is separated from the sector gear ratchet 56b, and the ratchets 56b and 58b are disengaged. The sector gear is locked off.

When the lock gear ratchet 58b is separated from the sector gear ratchet 56b and the sector gear is locked off, the ottoman 50 is pushed in and the sector gear 56 is rotated clockwise.
Any position from the position (holding position A) where the series of teeth on the other end (left end) of the ratchet 56b of the sector gear faces the ratchet 58b of the lock gear to the position (intermediate position B) where the series of teeth on one end (right end) faces. At this position, the lifting of the unlocking lever 62 is stopped. Then, the lock gear 58 rotates counterclockwise by the biasing force Pa of the biasing member (torsion spring) 64a, and the ratchet 58b meshes with the ratchet 56b of the sector gear. Due to the meshing of the ratchets 56b and 58b, the sector gear 56 cannot rotate clockwise and is locked.

  That is, the intermediate position B shown in FIG. 11B where the right end (a series of teeth at one end (right end)) of the ratchet 56b, which is the lower limit of the range where the ratchets 56b, 58b face each other, from the holding position A meshes with the ratchet 58b. Until now, the holding position at an arbitrary inclination angle is finely adjusted and finely and continuously set as shown in FIG.

FIG. 14A is a plan view of the sector gear, the lock gear, and the lock release lever when the lock release lever is pulled up at the holding position A by a full stroke. FIG. 14B is a plan view of the sector gear and the lock gear when the ottoman is pushed in from the holding position A.
When an arbitrary inclination position is not set between the holding position A and the intermediate position B, the lock release lever 62 is pulled up to the maximum (full stroke) in FIG.

When the lock release lever 62 is pulled up by a full stroke, the guide pin (boss) 58-6 pressed against the edge of the guide groove 62-6 moves along the edge of the guide groove, and the lock gear 58 is moved by the biasing member (torsion). Spring) 64a is rotated clockwise against the urging force of 64a, the meshing of ratchets 56b and 58b is released, and the sector gear is locked off. At this time, the biasing member 64a exceeds the so-called Z point, the direction of the biasing force Pa is reversed, the counterclockwise biasing force is applied to the lock gear 58, and the lock portion 58g2 is pressed against the peripheral surface of the sector gear 56. (See FIG. 14A).
If the lifting of the lock release lever 62 is stopped immediately after the lock portion 58g2 is pressed against the peripheral surface of the sector gear 56, the lock release lever is substantially horizontal under the biasing force of the biasing member (tensile coil spring) 64b. Return to the initial position.

Since the sector gear 56 is locked off, if the ottoman 50 is pushed in, the sector gear rotates clockwise while the lock portion 58g2 is slidably contacted with the peripheral surface. Eventually, the sector gear engaging portion (projection) 56c contacts the lock portion. Since the engaging portion 56c has a partial circular shape that is less than a semicircular shape, the sector gear 56 still rotates clockwise while pushing the lock portion 58g2.
When the engaging portion 56c pushes the lock portion 58g2, the lock gear 58 rotates counterclockwise against the urging force of the urging member 64a. When the lock portion 58g2 rides on the top of the partially circular engaging portion 56c, the direction of the urging force is reversed beyond the Z point. Then, when the ottoman 50 is further pushed in and the sector gear 56 is rotated in the clockwise direction, as shown in FIG. 14B, the sector 58 g 1 on the opposite side exceeds the engaging portion 56 f as shown in FIG. It is pressed against the peripheral surface of the gear 56.

  As shown in FIG. 8A, the peripheral surface of the sector gear between the engaging portions 56e and 56f is a root circle 56o2 having a smaller diameter than the diameter of the peripheral surface of the addendum circle 56o1 where the ratchet 56b is formed. Is formed. Therefore, the lock gear 58 slightly rotates counterclockwise, and the lock gear ratchet 58b comes into sliding contact with the peripheral surface of the sector gear 56 before the engaging portion 56f. Then, the right end of the ratchet 58b is engaged with a surface 56f-1 of the engaging portion 56f that rises at a substantially right angle to prevent the clockwise rotation of the sector gear 56, and the ottoman 50 is returned to the storage position C1 and stored. Is done.

As described above, the ottoman 50 and the sector gear 56 are integrally rotatable, and the sector gear is rotated as the ottoman is pulled up and pushed. The sector gear 56 is arbitrarily adjusted and set between the holding position A and the intermediate position B at an arbitrary holding position inclined with respect to the seat cushion 14 in a range where the ratchet 56b meshes with the ratchet 58b of the lock gear. The
Further, the substantially perpendicular surface 56f-1 of the engaging portion 56f on the sector gear circumferential surface is engaged with the end of the ratchet 58b of the lock gear, whereby a substantially perpendicular storage position C1 is set below the seat cushion. Further, the locking portion 58g2 of the lock gear enters and is accommodated in the substantially U-shaped groove 56e-1, and the storage position C2 that is substantially horizontal with the lower surface of the seat cushion is set.

Therefore, the ottoman adjusting device 52 is not structurally complicated, and the ottoman 50 is adjusted and set to a holding position having an arbitrary inclination angle between the holding position A and the intermediate position B with a simple configuration. Further, the ottoman 50 can be stored not only in the storage position C1 at a substantially right angle below the seat cushion, but also in the storage position C2 that is substantially horizontal to the lower surface of the seat cushion.
And since the holding position of the ottoman is set by locking the sector gear by engagement of the ratchet of the lock gear and sector gear, the holding position finely adjusted for each step is adjusted by shifting the ratchet engagement one tooth at a time. Can be set. Further, since the ratchet is engaged, the sector gear can be firmly locked, and the ottoman is reliably maintained in the holding position.
Also, since the holding position of the ottoman is adjusted and set by the rotation of the sector gear accompanying the rotation of the ottoman frame, the link is not pulled out or pulled back, so in the adjustment and setting of the ottoman holding position, There is no risk of involving the seated person's clothes.

The seat cushion 14 that is tip-up locked is locked off, for example, when a lock release lever (not shown) of the tip-up lock mechanism is pulled, and returned to a substantially horizontal seating position. At this time, the storage of the ottoman 50 at the storage position C2 may be released in conjunction with the operation of the unlock lever of the tip-up lock mechanism.
For example, one end of the cable 62 ′ is locked in the through hole 62-13 of the lock release lever (see FIG. 13), and the cable 62 ′ is pulled in conjunction with an operation of pulling the lock release lever of the tip-up lock mechanism. The ottoman 50 can be pulled out from the storage position c2 if the lock gear 58 rotates and the lock portion 58g1 is disengaged from the substantially U-shaped groove 56e-1 of the sector gear and escapes to a position not in contact with the protrusion 56e-2. It becomes.

A configuration may be adopted in which the lock gear 58 is rotated by pulling the cable 62 ′ without being interlocked with an operation of pulling the lock release lever of the tip-up lock mechanism.
With respect to this configuration (Example 2), members common to the above-described Example (Example 1) shown in FIGS. 1 to 14 are denoted by the same reference numerals, description thereof is omitted, and a configuration different from Example 1 is provided. Mainly explained.
FIG. 15A is a plan view of the ottoman adjusting device corresponding to FIG. 9B in the second embodiment, and FIG. 15B is a plan view of the sector gear.

  As shown in FIG. 15A, in the second embodiment, the lock release lever is omitted, and instead, the lock release plate 162 is rotatably attached to the right bracket 54R by a rivet 61-6. One end of 62 'is locked in the through hole 62-13 of the unlocking plate. When the cable 62 'is pulled in the direction of the arrow, the lock release plate 162 rotates counterclockwise around the rotation shaft (rivet) 61-6 against the urging force of the tension coil spring 64b. To do. Therefore, the lock gear 58 is rotated in the direction in which the ratchet 58b is separated from the ratchet 56b of the sector gear, and the sector gear is unlocked (locked off).

Also in the second embodiment, the sector gear 56 having the same shape as that of the first embodiment may be used. However, the sector gear 156 having the shape shown in FIG. 15B may be used. In the sector gear 156, the side surface of the substantially L-shaped portion 56d does not rise from the peripheral surface at a substantially right angle, is a recess 56d-1 ′, and its upper portion is covered. In this way, by making the side surface 56d-1 into the recessed portion 56d-1 ′ whose upper portion is covered, the lock portion 58g2 of the lock gear that is in contact with the side surface 56d-1 in the holding position A is counterclockwise of the sector gear 56. However, it cannot touch the portion covering the recess and escape upward.
Therefore, the ottoman 50 is pulled up beyond the holding position A, which is the uppermost holding position where the ratchets 56b and 58 mesh with each other, in a range where the lock portion 58g2 rides over the recess 56d-1 ′.
The engaging portion 56c is not limited to a partial circular shape as long as it has a protruding shape for turning on and off the lock gear, and may be a substantially trapezoidal shape, a smooth arc surface, or an inclined surface.

  Also in this embodiment, the sector gear 56 is locked and locked off by the lock gear 58 as in the first embodiment, and the holding position is arbitrarily adjusted and set between the holding position A and the intermediate position B. Needless to say, a substantially vertical storage position C1 and a substantially horizontal storage position C2 are set.

In the present invention, the ottoman adjusting device 52 meshes with the lock gear ratchet 58b, and a longer ratchet 56b is provided on a part of the circumferential surface of the sector gear 56, and the sector gear rotates as the ottoman 50 is pulled up and pushed. Has been moved. And, by rotating the sector gear, the ratchet portion of the sector gear meshing with the ratchet of the lock gear is changed, and the holding position of the ottoman is adjusted and set, and the ottoman position can be adjusted and set with a simple configuration.
And, since the ottoman holding position is adjusted and set by the rotation of the sector gear accompanying the rotation of the ottoman frame, the link is not pulled out or pulled back, so in the adjustment and setting of the ottoman holding position, There is no risk of involving the seated person's clothes.

The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention in any way, and all modifications and alterations made within the technical scope of the present invention are included in the present invention. Needless to say.
For example, a guide pin (boss) 58-6 provided on the lock gear 58 is inserted into and engaged with a guide groove (through hole) 62-6 provided on the lock release lever 62. However, conversely, a guide pin may be provided on the lock release lever 62 and inserted into and engaged with a guide groove provided on the lock gear 58. Of course, the shape of the guide groove is not limited to a substantially rectangular shape.

  Further, the engaging portions 56f (first engaging portion), 56e (second engaging portion), 56d-1 (third engaging portion), 56c (fourth engaging portion) provided on the sector gear 56 are provided. Portion), a lock portion (first lock portion; hook) 58g1 provided on the lock gear 58, and a shape of the lock portion (second lock portion; hook) 58g2 (second lock portion) are only examples, and are illustrated in the figure. The shape is not limited to the above, and any shape that performs a predetermined function may be used. For example, the combination of the engaging portion 56e (second engaging portion) and the first lock portion 58g1, and the combination of the engaging portion 56f (first engaging portion) and the first lock portion 58g1 are the sector gear 56. However, as long as a large force is applied to the sector gear, it is sufficient that the restriction is released without being able to resist it.

The present invention is not limited to ordinary vehicle seats such as buses, passenger cars, aircrafts, etc., but generally seats fitted with ottomans, for example, seats used in offices and homes (office chairs, massage chairs), public halls, theaters It can also be applied to a wide range of seats installed in movie theaters and sports facilities.
Moreover, although it is effective when applied to a chip-up seat as a vehicle seat, it may be applied to a vehicle seat other than the chip-up seat.

10 Seat (vehicle seat)
12 Seat back 14 Seat cushion 14Fr Front frame (front rod, connecting rod)
50 Ottoman 52 Ottoman adjusting devices 54L, 54R Left and right brackets 56 Sector gear 56b Ratchet 56c Fourth engagement portion 56d Substantially L-shaped portion 56d-1, 56d-1 ′ Third engagement portion 56e Second engagement Part 56e-1 substantially U-shaped groove 56e-2 protrusion 56f first engagement part 56o reference circle 56o1 tooth tip circle 56o2 tooth bottom circle 58 lock gear 58b ratchet 58g1, 58g2 hook (first and second lock parts)
58-6 Guide Pin (Boss)
61-2 Rotating shaft of lock gear (rivet)
61-3 Rotating shaft (bolt) of sector gear
61-6 Rotating shaft (rivet) of unlocking lever (unlocking plate)
62 Lock release lever 62-6 Guide groove (through hole)
64a Energizing member (torsion spring)
64b (another) urging member (compression coil spring)
162 Unlocking plate 162 'Cable

Claims (11)

In the ottoman, which is pivotally attached to the front part of the seat cushion, the holding position where the occupant's legs are placed and the storage position where the seat cushion is pushed in and stored are adjusted and set by the ottoman adjusting device. ,
The ottoman adjustment device
An ottoman frame that is rotated integrally with a connecting rod that is rotatably mounted between the left and right side frames of the seat cushion, and the position of the ottoman is adjusted and set by its lifting and pushing;
With a ratchet formed on a part of the peripheral surface, it is pivotally attached to one of the side frames of the seat cushion, and one end of the connecting rod is fixed to the side surface so that the ottoman frame rotates. The sector gear rotated
A lock gear that has a ratchet that can mesh with the ratchet of the sector gear on the peripheral surface, and is rotatably attached to one of the side frames of the seat cushion;
A biasing member that applies a biasing force to the lock gear in a direction in which the ratchet of the lock gear meshes with the ratchet of the sector gear;
With
The sector gear and lock gear ratchet prevents the sector gear from rotating in the direction of pushing the ottoman frame, locks the sector gear, and allows the sector gear to rotate in the direction of lifting the ottoman frame.
The sector gear ratchet is formed longer than the lock gear ratchet, and a part of the sector gear ratchet meshes with the lock gear ratchet,
Rotating the sector gear in the direction of pushing the ottoman frame from the position where the ratchet at one end of the sector gear meshes with the ratchet of the lock gear to the position where the ratchet at the other end of the sector gear meshes with the ratchet of the lock gear The Ottoman holding position is adjusted and set in the direction of lifting the ottoman frame, locking the sector gear,
Rotate the lock gear against the urging force of the urging member, release the engagement of the lock gear and the sector gear ratchet, lock off the sector gear, rotate the sector gear in the direction to push in the ottoman frame Rotating the lock gear within the range in which the ratchet of the sector gear and lock gear can be meshed, engaging the ratchet of the lock gear with the ratchet of the sector gear to lock off the sector gear, and holding the ottoman frame in the direction of pushing in the ottoman frame Ottoman that is adjusted and set. A first engagement portion corresponding to a first storage position in which the ottoman is stored at a substantially right angle below the seat cushion, and a second engagement corresponding to a second storage position in which the ottoman is stored substantially horizontally on the lower surface of the seat cushion. Joints are formed on the peripheral surface of the sector gear,
When the sector gear rotates as the ottoman frame is pushed, the first engaging portion is engaged to restrict the rotation of the sector gear in the pushing direction of the ottoman frame, and the second engaging portion is engaged. 2. The lock gear according to claim 1, further comprising: a first lock portion formed on the lock gear for preventing the rotation of the sector gear in the pushing direction of the ottoman frame and enabling the ottoman to be stored in the first and second storage positions. Ottoman. The first engaging portion is a protrusion having a surface rising substantially perpendicularly from the peripheral surface, and the substantially perpendicular surface of the protrusion is engaged with the first lock portion to restrict the rotation of the sector gear.
The second engagement portion is located in front of the substantially U-shaped groove having a surface against which the first lock portion abuts, and the groove-side surface rises from the circumferential surface at a substantially right angle and is opposite to the groove. And the first lock portion climbs over the projection and enters the groove and comes into contact with the surface behind the groove to prevent the sector gear from rotating. The ottoman according to claim 2, wherein the first lock portion is prevented from being detached from the groove by a right-angled surface and is stored in the groove.   4. The ottoman according to claim 3, wherein the first lock portion is a hook formed at a tip end of an end of the lock gear adjacent to the ratchet of the lock gear, and a hook surface on the ratchet side has an inclined surface. A third engagement portion corresponding to the holding position of the ottoman which is set by raising the ottoman frame most and a ottoman holding position which is substantially horizontal is formed on the peripheral surface of the sector gear,
When the sector gear rotates as the ottoman frame is lifted, a second lock portion is formed on the lock gear to engage the third engaging portion and restrict the rotation of the sector gear in the pulling direction of the ottoman frame. The ottoman according to claim 1 or 2.   6. The ottoman according to claim 5, wherein the second lock portion is a hook formed at a tip end of an end of the lock gear separated from the ratchet of the lock gear, and the base of the hook on the ratchet side is an inclined surface.   7. The ottoman according to claim 6, wherein the biasing member is a torsion spring, one end of which is locked to the lock gear and the other end is locked to the side frame.   A fourth engagement portion is formed on the peripheral surface of the sector gear adjacent to the ratchet on the third engagement portion side, and the fourth engagement portion is a partial circle not exceeding a semicircle or a trapezoid. When the sector gear rotates as the ottoman frame is lowered, the second lock portion rides on the fourth engagement portion, and the lock gear is rotated to reverse the direction of action of the biasing force of the torsion spring. The ottoman according to claim 7. The ottoman adjustment device
An unlocking lever pivotally attached to one of the side frames of the seat cushion;
Another urging member that urges the lock release lever in a pulling-down direction;
Further comprising
Either one of the guide groove and the guide pin that is inserted into and engaged with the guide groove is formed on the lock release lever, and the other is formed on the lock gear.
When the unlocking lever is pulled up against the urging force of the urging member, the guide pin is pressed against the edge of the guide groove, or the guide groove is pressed against the guide pin, so that the ratchet is separated from the sector gear ratchet. The ottoman according to claim 7 or 8, wherein the lock gear is rotated in a direction to release the ratchet to release the sector gear. The ottoman adjustment device
An unlocking plate pivotally attached to one of the side frames of the seat cushion;
An urging member that urges the lock release lever in a pulling-down direction;
When the one end is formed on the unlocking plate and pulled, the cable pulls up the unlocking plate against the biasing force of the biasing member;
Further comprising
Either one of the guide groove and the guide pin that is inserted into and engaged with the guide groove is formed on the lock release plate, and the other is formed on the lock gear.
When the lock release plate is pulled up against the biasing force of the biasing member by pulling the cable, the guide pin is pressed against the edge of the guide groove, or the edge of the guide groove is pressed against the guide pin, and the ratchet The ottoman according to claim 7 or 8, wherein the lock gear is rotated in a direction away from the sector gear ratchet to release the ratchet to lock off the sector gear.   The vehicle seat with an ottoman provided with the ottoman in any one of Claims 1-10.

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