JP2016088477A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat in which assembly rigidity of a tether anchor for a child seat is assured, and weight saving and down-sizing of a seat body are achieved.SOLUTION: A vehicle seat S is a seat of which a seat body can be stored in a storage recess formed on a vehicle body floor. The vehicle seat S is equipped with left and right rail devices 7 which are attached onto the vehicle body floor and so support the seat body as to be movable in a longitudinal direction, and a reclining device 13 which is located on one of left and right lateral portions of the seat body and rotatably connects the seat body to the vehicle body floor side. An anchor member 9 for a child seat is assembled to a rail connection part 7c which connects rear portions of left and right upper rails 7b, and is located on the reclining device 13 side with respect to a central part of the left and right upper rails 7b.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat capable of storing a seat back and a seat cushion at a position lower than a vehicle body floor.

  Conventionally, there are already known vehicle seats in which the seat back and the seat cushion constituting the seat body can be stored at a position lower than the vehicle floor, and among them, the seat body is tilted forward and provided in front of the seat. There is a vehicle rear seat that can be stored on a storage floor (see, for example, Patent Document 1).

A vehicle seat described in Patent Document 1 is attached to a vehicle body floor, and has a mounting shaft that rotatably supports a seat back, a holding groove in which an upper end supports a front portion of a seat cushion, and a lower end is fixed to a storage floor. And a leg structure that is rotatably held by the storage unit.
When the seat body is retracted, the seat back rotates relative to the vehicle floor to move the seat cushion to the storage floor, and the leg member rotates around the holding groove in conjunction with the seat back. It can be stored on the storage floor.
The vehicle seat can be switched from a use state in which an occupant can be seated to a tip-up state in which the seat member is lifted upward after the leg member is detached from the holding groove.

JP 2009-67309 A

By the way, in the seat which can store a seat main body like patent documents 1, generally a tether anchor for connecting a child seat is assembled in a predetermined position of a seat main body (seat back and seat cushion).
When assembling the tether anchor to the seat body, it is required to ensure the rigidity of the tether anchor assembly. On the other hand, if the tether anchor is easily increased in weight and size, the seat body will increase in weight and size. was there.
Therefore, there has been a demand for a vehicle seat that can reduce the weight and size of the seat body while ensuring the mounting rigidity of the tether anchor.
In particular, since a seat that can store the seat body has a complicated storage structure, it has been further required to devise the arrangement of tether anchors.

Further, in the seat as in Patent Document 1, the structural components of the storage structure are attached not only to the vehicle body floor surface on which the seat body is installed, but also to the storage floor surface, and the structure is complicated to store the seat body. It was.
Therefore, a sheet that has a simple structure and can be stored on the storage floor has been desired.

Further, in the seat as in Patent Document 1, the leg member that supports the seat cushion is a long member because it is connected between the seat cushion and the storage floor.
Then, when the leg member is detached from the holding groove by the switching operation between the use state and the tip-up state, the swinging width in the front-rear direction of the detached leg member is increased due to the long overall length of the leg member. The operation of reattaching the member to the holding groove has been difficult.
Therefore, a sheet that can be easily switched from the use state has been desired.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat that secures the assembly rigidity of a tether anchor and achieves weight reduction and downsizing of the seat body. is there.
Another object of the present invention is to provide a vehicle seat that can be stored on a storage floor with a simple structure.
Another object of the present invention is to provide a vehicle seat that can be easily switched from a use state.

  According to the vehicle seat of the present invention, there is provided a vehicle seat including a seat body having a seat back serving as a backrest portion and a seat cushion coupled to the seat back and serving as a seating portion. Left and right lower rails fixed on the vehicle body floor and extending in the front-rear direction of the seat, and slidably attached along the lower rail, and left and right upper rails supporting the seat body, and a rear portion of the upper rail On the other hand, an anchor member for connecting the child seats is preferably attached.

In the above vehicle seat, since the anchor member is attached to the rear portion of the upper rail fixed on the vehicle body floor, it is more rigid than the case where it is attached to the seat back or the seat cushion as in the past. It will be assembled to a high component.
As a result, it is possible to suppress the weight and size of the anchor member easily while securing the assembly rigidity of the anchor member, which leads to weight reduction and size reduction of the seat body.

At this time, the seat body can be stored at a position lower than the vehicle body floor, and is mounted on the left and right upper rails, and a support base that supports the seat body, is mounted on the support base, and the reclining A seat pivot shaft connected to one end side of the seat body in the longitudinal direction of the seat as a pivot shaft of the apparatus, an upper end portion is attached to the other end side of the seat body, and a lower end portion is detachable on the support base And a detachable leg supported by the head.
As described above, since all the components of the storage structure are arranged on the vehicle body floor, a seat that can be stored on the storage floor can be realized with a simple structure.
Further, since the lower end portion of the attachment / detachment leg is disposed not on the storage floor as in the prior art but on the vehicle body floor, the entire length of the attachment / detachment leg can be reduced. Since the swing width in the front-rear direction of the detachable leg is reduced by the small total length of the detachable leg, the detachable leg is easily held by the leg holding member. Therefore, the switching operation from the use state becomes easy.

At this time, a rail locking device that can be locked in a state where the upper rail is supported by the lower rail is provided, and the rail locking device is an operation for switching between the locked state in which the upper rail is locked and the unlocked state. It has a strap, and this operation strap is good to be arranged around the anchor member.
With the above configuration, when the operator assembles the anchor member, the front / rear position of the seat body can be adjusted as appropriate by operating the operation strap around the anchor member, so that the operator's assembling work becomes efficient.

At this time, it is preferable that a rail connecting portion that connects rear portions of the left and right upper rails is provided, and the anchor member and the operation strap are attached to the rail connecting portion.
As described above, since the anchor member and the rail operation strap are assembled to the same member, the accuracy of the assembly position of each other is improved.

In this case, the seat main body may include a headrest having left and right headrest pillars connected to an upper end of the seatback and serving as a skeleton, and the anchor member may be disposed between the left and right headrest pillars.
In general, the child seat is connected to the anchor member via a known tether belt. With the above configuration, the tether belt can be easily passed between the left and right headrest pillars, so that the child seat can be easily assembled. Further, the child seat can be stably connected.

In this case, the reclining device is disposed on one of the left and right side portions of the seat body and rotatably connects the seat body with respect to the vehicle body floor side, and the anchor member has the left and right sides in the seat width direction. It is good to arrange | position at the said reclining apparatus side rather than the center part of this upper rail.
With the above configuration, the anchor member is disposed at a position close to the recliner with relatively high rigidity, so that the assembly rigidity of the anchor member is improved.

At this time, the operation strap may be disposed at a substantially central portion of the left and right upper rails in the seat width direction, and the anchor member may be disposed between the operation strap and the reclining device.
With the above-described configuration, the operation strap is disposed at a position where the hand of the occupant can easily reach.
Further, since the anchor member is disposed at a position close to the reclining device, the assembly rigidity of the anchor member is improved.

At this time, it is preferable that a cover for covering the anchor member and the operation strap from outside is provided, and the cover has a partition wall portion that partitions the anchor member and the operation strap.
With the above configuration, interference between the anchor member and the operation strap can be suppressed. In addition, the operability of the operation strap is improved.

At this time, the cover may be provided with reinforcing ribs provided around the anchor member and in contact with the rail connecting portion.
With the above configuration, the assembly rigidity of the cover and the anchor member supported by the cover is improved.

At this time, a strap through hole for allowing the operation strap to pass through is formed in the cover, and the strap through hole may extend along the extending direction of the operation strap.
With the above configuration, the operation strap can be stably held. Further, the positioning when the operation strap is passed through the cover is clear.

At this time, the rail lock device connects the operation strap and the upper rail, and causes the engaged portion provided on the upper rail to be disengaged from the engagement portion provided on the lower rail when the operation strap is pulled. Thus, the rail lock body for releasing the upper rail from the locked state is provided, and the rail lock body is provided with a strap latching groove for latching one end of the operation strap. It is preferable that the opening portion has a guide shape for guiding one end of the operation strap into the strap latching groove.
By having the guide shape, the operation strap can be easily assembled to the rail lock body.

At this time, the strap retaining groove is preferably formed to be wider than the opening.
With the above-described configuration, it is possible to prevent the operation strap that has been hooked from coming off.

At this time, the opening portion may be formed so as to become narrower toward the bottom portion in the depth direction of the strap retaining groove.
With the above configuration, the operation strap can be more easily assembled to the rail lock body.

At this time, the operation strap is a first operation strap, and the rail lock device is attached to a portion different from the first operation strap with respect to the upper rail, and the second operation strap. And a traction cable for connecting the end portion of the rail lock main body to the end portion of the rail lock body.
As described above, the traction cable for the second operation strap is connected to the end portion of the rail lock body rather than the portion provided with the strap latching groove. The removal of the first operating strap that has been performed can be further suppressed.

According to invention of Claim 1, the anchor member for child seats is assembled | attached to a component with high rigidity compared with the past. As a result, it is possible to suppress the weight and size of the anchor member easily while securing the assembly rigidity of the anchor member, which leads to weight reduction and size reduction of the seat body.
According to the invention of claim 2, a sheet that can be stored on the storage floor can be realized with a simple structure. In addition, the switching operation is easy from the use state.
According to invention of Claim 3, the assembly | attachment operation | work of the anchor member and rail operation strap by an operator becomes efficient.

According to invention of Claim 4, since an anchor member and an operation strap are assembled | attached to the same member, the precision of a mutual assembly position improves.
According to the invention of claim 5, the child seat can be easily assembled. In addition, the child seat can be stably connected.
According to invention of Claim 6, 7, the assembly | attachment rigidity of an anchor member improves. Further, the operation strap is disposed at a position where the hand of the occupant can easily reach.

According to the invention of claim 8, interference between the anchor member and the operation strap can be suppressed. In addition, the operability of the operation strap is improved.
According to invention of Claim 9, the assembly | attachment rigidity of a cover and an anchor member improves.
According to invention of Claim 10, an operation strap can be hold | maintained stably. Further, the positioning when the operation strap is passed through the cover is clear.

According to the eleventh aspect of the invention, the operation strap can be easily assembled to the rail lock body by having the guide shape.
According to the twelfth aspect of the present invention, it is possible to prevent the operation strap that has been latched from coming off.
According to the invention of claim 13, it becomes easier to assemble the operation strap to the rail lock body.
According to the fourteenth aspect of the present invention, it is possible to further prevent the hooked first operation strap from coming off by the stable support of the traction cable.

It is a perspective view of a vehicular seat concerning this embodiment. It is a perspective view of the seat frame used as the frame of a vehicular seat. It is a perspective view of the support base of a vehicle seat. It is a top view of a support base, Comprising: It is a figure which shows a rail locking device. It is a principal part enlarged view of FIG. 4, Comprising: It is a figure which shows the strap latching groove | channel of a rail lock apparatus. It is a perspective view of the base cover which protects a support base. It is a perspective view when a base cover is seen from the back side. It is a side view of a vehicle seat and is a diagram for explaining an operation of moving from a use state to a storage state. It is a side view of a vehicle seat, and is a diagram for explaining an operation of moving to a stored state. It is a side view of a vehicle seat, and is a diagram for explaining an operation of moving from a stored state to a tip-up state. It is a side view of a vehicle seat, and is a diagram for explaining an operation of returning from a tip-up state to a use state.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS.
This embodiment is a vehicle seat that can store a seat body on a storage floor, and is mounted on a vehicle body floor, and includes a left and right rail device that supports the seat body movably in the front-rear direction, and a left and right rail device. The present invention relates to a vehicle seat invention comprising a rail connecting portion for connecting a rear portion, and an anchor member for a child seat is assembled to the rail connecting portion.
The side on which the occupant sits with respect to the seat back of the vehicle seat is the front side of the seat.

The vehicle seat S of the present embodiment is a rear seat corresponding to a rear seat of the vehicle, for example.
As shown in FIG. 1, the vehicle seat S includes a seat body having a seat back 1, a seat cushion 2, and a headrest 3, an attachment / detachment leg 30 that supports the seat body from below, and an attachment / detachment leg 30 from below. It is mainly comprised from the support base 40 to support, the leg holding member 50 attached to the support base 40, and holding the lower end of the attachment-and-detachment leg 30 so that attachment or detachment is possible, and the base cover 60 which covers the support base 40 from upper direction. Yes.
As shown in FIG. 2, the vehicle seat S is fixed on the vehicle body floor, and supports left and right rail devices 7 that support the seat body so as to be movable back and forth, and a rail lock device 8 that can lock the rail device 7. And a reclining device 13 that rotatably connects the seat back 1 to the support base 40.
Further, an anchor member 9 for connecting the child seat is attached to the rear portion of the rail device 7.
As shown in FIG. 8, a concave storage floor formed at a position lower than the vehicle body floor is provided on the front side of the vehicle seat S.

The vehicle seat S can be arranged in three types of seat arrangements: a use state in which an occupant can be seated, a storage state in which the seat body is stored on the storage floor, and a tip-up state in which the seat body is flipped upward. It is a sheet.
Specifically, when the occupant pulls the operation lever 1c of FIG. 1 from the use state shown in FIG. 8A, the vehicle seat S is folded forward and folded and stored on the storage floor. The storage state is switched to that shown in FIG. Further, when the occupant manually raises the seat body upward from the stored state, the state is switched to the tip-up state shown in FIG. Further, when the occupant pulls the detachable leg 30 functioning as the operation portion from the tip-up state, the seat cushion 2 rotates downward with respect to the seat back 1 and returns to the use state shown in FIG. Details will be described later.

As shown in FIG. 1, the seat back 1 is a backrest portion that supports the back of the occupant from the back, and the cushion pad 1a is placed on the back frame 10 of FIG. Has been configured. On the upper surface of the seat back 1, an operation lever 1c is disposed on the right side in the seat width direction.
As shown in FIG. 1, the seat cushion 2 is a seating portion that supports an occupant from below, and the cushion pad 2a is placed on the cushion frame 20 shown in FIG. It is configured to be covered with the skin 2b.

The headrest 3 is a head that supports the occupant's head from the rear, and is configured by placing a cushion pad 3a on a known headrest pillar serving as a core and covering with a skin 3b.
The headrest pillar is generally composed of left and right pillar main body portions and pillar connecting portions that connect upper ends of the left and right pillar main body portions.

The rail device 7 is disposed between the seat body and the vehicle body floor in the vertical direction. As shown in FIG. 2, the rail device 7 is fixed to the vehicle floor via a floor connecting member 6 and extends in the left-right direction of the seat. It is mainly comprised from the lower rail 7a, the left and right upper rail 7b supported so that sliding is possible along the lower rail 7a, and the rail connection part 7c which connects the rear part of the left and right upper rail 7b.
A support base 40 is installed on the upper surfaces of the left and right upper rails 7b. On the support base 40, as shown in FIG. 3, a rail lock device 8 capable of locking the upper rail 7b while being supported by the lower rail 7a is provided. It is attached.
An anchor member 9 and a first operation strap 8 d that is disposed at a position adjacent to the anchor member 9 and serves as an operation portion of the rail lock device 8 are attached to the rail connecting portion 7 c.

As shown in FIGS. 3 and 4, the rail lock device 8 is disposed between the left and right upper rails 7b, and connects the rail lock body 8a, the rail lock body 8a and the operation strap, and pulls the operation strap. Accordingly, the rotation bar 8b that rotates about the rotation shaft 8c, and the first operation strap 8d and the second operation strap 8e that are hooked on one end of the rotation bar 8b are mainly configured. .
Specifically, the first operation strap 8d is latched by a strap latching groove 8g provided at one end of the rotating bar 8b. The second operation strap 8e is attached via a traction cable 8f that is hooked to one end of the rotation bar 8b.

The rail lock main body 8a connects the upper rail 7b and the rotation bar 8b, and an engagement groove (not shown) provided on the upper rail 7b as the rotation bar 8b rotates is provided on the lower rail 7a. It is a mechanism that can release the upper rail 7b from the locked state by separating it from the pawl.
The rotation bar 8b supports the rotation shaft 8c at a substantially central portion in the longitudinal direction, and connects the rail lock body 8a and the operation strap with the rotation shaft 8c interposed therebetween.

One end of the first operation strap 8d is latched in the strap latching groove 8g, the other end extends rearward of the seat, and is slidably guided by a guide wire provided in the rail coupling portion 7c. It is formed to extend above 7c.
The second operation strap 8e has one end connected to the traction cable 8f and the other end guided by a guide wire provided on the support base 40 so as to be slidable. It is formed to extend.
One end of the pulling cable 8f is hooked to the end portion of the rotation bar 8b than the strap latching groove 8g, the other end extends rearward of the seat, is guided by the guide wire of the rail connecting portion 7c, and is folded back. It extends to the front of the seat and is connected to the second operation strap 8e.

As shown in FIG. 5, the strap retaining groove 8g has a groove space wider than the opening.
The opening portion of the strap retaining groove 8g has a guide shape for guiding one end of the first operation strap 8d into the groove.
Specifically, the opening portion is formed so as to become narrower toward the bottom portion in the depth direction of the strap latching groove 8g.
In addition, a part of one end side in the longitudinal direction of the rotating bar 8b is partially cut out in the opening part so as to be recessed in the depth direction than a part on the other end side, and a step is generated in the opening part. .
Therefore, it is possible to easily assemble the first operation strap 8d to the rotation bar 8b, and it is possible to suppress the removal of the assembled first operation strap 8d.

The anchor member 9 is made of a substantially U-shaped wire member for connecting the child seat, and is attached to the front surface of the rail connecting portion 7c as shown in FIGS.
The anchor member 9 is disposed at a position closer to the reclining device 13 than the first operation strap 8d disposed in the center portion of the left and right upper rails 7b in the seat width direction.
Further, the anchor member 9 is disposed between the left and right pillar main body portions that are the core material of the headrest 3 in the seat width direction.
The anchor member 9 and the first operation strap 8d are covered from above by a base cover 60 shown in FIG. 6, and are exposed upward through the anchor through hole 65 and the strap through hole 66 provided in the base cover 60. ing.

The back frame 10 is formed of a substantially rectangular frame that serves as a skeleton of the seat back 1. As shown in FIG. 3, the lower portion of the left and right outer surfaces of the back frame 10 is connected to the support base 40. Left and right connecting brackets 11 are attached.
The connection bracket 11 is made of a substantially bow-shaped sheet metal member extending in the vertical direction. The upper end of the connection bracket 11 is attached to the back frame 10, and the lower end is attached to the support base 40.
A seat rotation shaft 12 that is pivotally supported by the support base 40 in the left-right direction is provided at the lower end of the left connection bracket 11, and the back frame 10 with respect to the support base 40 is provided at the lower end portion of the right connection bracket 11. A reclining device 13 for connecting the two to each other is attached.

As shown in FIG. 3, the reclining device 13 is accommodated on the inner side surface in the seat width direction of the right connecting bracket 11, and is attached to the outer surface of the support base 40 via the lycra mounting bracket 14. It is assembled.
The reclining device 13 biases the cradle main body 13a, the seat rotation shaft 12 serving as the rotation shaft of the reclining device 13, and the back frame 10 so as to rotate forward about the seat rotation shaft 12. It is mainly composed of spiral springs.
The seat rotation shaft 12 is pivotally supported by the connection bracket 11, the lycra body 13a, and the lycra mounting bracket 14 in the seat width direction.
A spiral spring (not shown) has one end locked to the back frame 10 side and the other end locked to the support base 40 side.

  The reclining device 13 can be switched to a locked state that locks the rotation operation of the back frame 10, locks the back frame 10 in the standing posture of FIG. 1, and releases the locked state by operating the operation lever 1 c. Then, the back frame 10 can be rotated forward by the urging force of the spiral spring and folded to the vehicle body floor side.

  The cushion frame 20 is formed of a substantially rectangular frame that is a skeleton of the seat cushion 2, and connects the side frames 21 arranged on the left and right sides and the front portions of the side frames 21 as shown in FIG. 2. The front connecting pipe 22 that connects the front connecting pipe 22 and the central connecting pipe 23 that connects the front connecting pipe 22 and the central connecting pipe 23 are mainly configured. ing.

The side frame 21 is made of a sheet metal member extending in the front-rear direction of the seat, the front portion thereof is connected to the front connection pipe 22, and the cushion frame 20 is rotatably connected to the back frame 10 at the rear end portion. A cushion rotating device 25 is attached.
The front connection pipe 22 is formed of a U-shaped pipe member, and a leg rotation device 28 that rotatably connects the detachable leg 30 to the cushion frame 20 is attached to the left and right inner surfaces thereof.

The cushion rotating device 25 is a known device, and as shown in FIG. 3, a cushion rotating shaft 26, a spiral spring 27 that urges the cushion frame 20 downward about the cushion rotating shaft 26, It has.
The cushion rotation shaft 26 is pivotally supported on the back frame 10 side and the cushion frame 20 side in the left-right direction, and one end of the spiral spring 27 is locked on the back frame 10 side, and the other end is on the cushion frame 20 side. It is locked.
The cushion rotation device 25 can be switched to a locked state in which the rotation operation of the cushion frame 20 is locked.
As shown in FIG. 9C, the cushion rotation device 25 is configured to store the seat body on the storage floor, specifically, when the back frame 10 is folded to the cushion frame 20 side. The rotational movement of the cushion frame 20 is locked. 11A, when the detachable leg 30 functioning as the operation lever is pulled, the locked state is released, and the cushion frame 20 is moved downward with respect to the back frame 10 by the urging force of the spiral spring 27. Can be rotated.

The leg rotation device 28 includes a leg rotation shaft 28a and a spring member that urges the attachment / detachment leg 30 on the opposite side of the cushion frame 20 around the leg rotation shaft 28a, in other words, away from the cushion frame 20. 28b.
The leg rotation shaft 28a is pivotally supported by the front connecting pipe 22 and the upper end of the detachable leg 30 in the left-right direction, and one end of the spring member 28b is locked to the cushion frame 20 side, and the other end is detachable leg. It is locked on the 30 side.
The leg rotation device 28 can be switched to a locked state in which the rotation operation of the attachment / detachment leg 30 is locked, and the attachment / detachment leg 30 is detached from the leg holding member 50 as shown in FIG. When it is housed on the 20 side, the rotation of the detachable leg 30 is locked. Then, as shown in FIG. 11A, when the locked attachment / detachment leg 30 is pulled, the locked state is released, and the attachment / detachment leg 30 is returned to the use state by the biasing force of the spring member 28b. 50 can be moved to a position where it can be mounted.

As shown in FIG. 3, the detachable leg 30 is a substantially U-shaped pipe member that supports the seat cushion 2, and connects the leg main body portion 31 disposed on the left and right sides and the lower end of each leg main body portion 31. A leg connecting portion 32.
The upper end of the leg main body 31 is connected to the left and right inner surfaces at a substantially central portion in the front-rear direction of the cushion frame 20, and the substantially central portion in the left-right direction of the leg connecting portion 32 is detachably held by the leg holding member 50. Has been.
The upper end portion of the detachable leg 30 protrudes forward of the seat from the lower end portion of the detachable leg 30, and is inclined upward from the lower end portion of the detachable leg 30 toward the upper end portion of the detachable leg 30.

  The support base 40 is a member that supports the seat body. As shown in FIG. 4, the left and right side base portions 41 arranged along the left and right upper rails 7 b are connected to the front portions of the side base portions 41. The first base connecting portion 42, the second base connecting portion 43 connecting the substantially central portion of each side base portion 41, the left and right reinforcing base portions 44 attached to the upper surface of each side base portion 41, and the first base A holding member support portion 45 that connects the connecting portion 42 and the second base connecting portion 43 and supports the leg holding member 50 is provided.

  As shown in FIG. 4, the side base portion 41 and the reinforcement base portion 44 are made of a substantially crank-shaped sheet metal member that is long in the front-rear direction. The side base portion 41 is connected to the upper surface of the upper rail 7b. The side base portion 41 overlaps with the upper and lower sides to form a closed cross-sectional structure.

As shown in FIG. 3, the left and right ends of each of the first base connecting portion 42 and the second base connecting portion 43 are connected by being sandwiched between a side base portion 41 and a reinforcing base portion 44.
The holding member support portion 45 is a curved sheet metal member that supports the leg holding member 50, a front portion thereof is attached to the first base connecting portion 42, and a rear portion thereof is attached to the second base connecting portion 43. Yes.

As shown in FIGS. 3 and 4, the leg holding member 50 is formed of a substantially U-shaped clip member that detachably holds the detachable leg 30, and supports the holding member at a position in which the opening portion is obliquely upward and upward. Supported by the portion 45.
The leg holding member 50 includes a pair of side wall portions 51 and a bottom wall portion 52 that connects the lower end portions of the side wall portions 51.
Each side wall 51 is bent in a direction close to each other from the lower end to the upper end, in other words, is bent so as to narrow the opening portion of the leg holding member 50, A curled portion 53 that is warped in the outward direction of the opening is formed.
The pair of curl portions 53 respectively penetrates openings provided in the base cover 60 shown in FIG. 7 and are exposed to the outside on the side of the attachment / detachment leg 30.

  An inertia lock device 54 that locks the leg connecting portion 32 of the detachable leg 30 while being held by the leg holding member 50 at the time of a rear-end collision of the vehicle is disposed at a portion adjacent to the leg holding member 50.

The base cover 60 is formed of a resin cover that covers the entire support base 40 from above. As shown in FIGS. 6 and 7, the front cover 61 disposed on the front side of the seat and the rear disposed on the rear side of the front cover 61. The cover 64 and the front cover 61 and the rear cover 64 that are configured by snap-fit are combined.
The front cover 61 has a guide shape that guides the detachable leg 30 that moves together with the seat body. Specifically, the leg accommodating recess 62 that accommodates the detachable leg 30, and the detachable leg 30 from the leg accommodating recess 62. And a leg movement restricting portion 63 that restricts the rearward movement.

The leg receiving recess 62 is formed of a substantially U-shaped recess that is recessed downward from a substantially central portion of the upper surface of the base cover 60, and is disposed at a position in which the opening is directed obliquely upward to the front.
A rectangular opening is formed in the front and rear side walls of the leg receiving recess 62, and a part of the leg holding member 50 is inserted through the opening from the back side of the base cover 60 as shown in FIG. Exposed outside.
Further, an opening extending vertically is formed in the rear side wall, and a part of the inertia lock device 54 is exposed to the outside through the opening from the back surface side of the base cover 60.

The leg movement restricting portion 63 is a portion that protrudes from the substantially central portion of the upper surface of the base cover 60 toward the front side of the seat, and is formed continuously from the rear portion of the leg housing recess 62.
The leg movement restricting portion 63 can restrict the rearward movement of the detachable leg 30 when the detachable leg 30 is accommodated in the leg accommodating recess 62, and can guide the detachable leg 30 toward the leg accommodating recess 62.

The rear cover 64 is a cover that covers the anchor member 9 and the first operation strap 8d from above, and includes an anchor through hole 65 for penetrating the anchor member 9 and a strap through hole for penetrating the first operation strap 8d. 66, and a partition wall 67 that partitions between the anchor member 9 and the first operation strap 8d.
As shown in FIG. 7, the outer edge portions of the anchor through hole 65 and the strap through hole 66 extend downward along the extending direction of the anchor member 9 and the first operation strap 8d.
Further, a reinforcing rib 68 is formed on the bottom surface of the outer edge portion of the anchor through-hole 65 so as to extend downward from the bottom surface and come into contact with the rail connecting portion 7c of FIG.

In the above configuration, the outer edge portion of each of the anchor through hole 65 and the strap through hole 66 and the reinforcing rib 68 are formed so as to abut on the rail connecting portion 7c.
Therefore, it becomes easy to position the base cover 60 and the assemblability is improved.

<Sheet storage operation>
Next, an operation for moving the seat body from the use state to the storage state will be described with reference to FIGS. 8 and 9, the reclining device 13, the cushion rotating device 25, and the leg rotating device 28 are in a locked state when illustrated by a black circle, and are in an unlocked state when illustrated by a white circle. Shall be shown. The same applies to FIGS. 10 and 11.

  When the vehicle seat S is in the use state shown in FIG. 8A, the seat back 1 is supported by the support base 40 and is locked in the standing posture by the reclining device 13, and is connected to the seat back 1. The cushion 2 is supported from below by the detachable legs 30 held by the leg holding member 50.

When the vehicle seat S is moved from the use state to the storage state, the operation lever 1c of FIG. 1 provided on the upper surface of the seat back 1 is operated.
When the occupant operates the operation lever 1c, the reclining device 13 is unlocked as shown in FIG. 8B, and the seat back 1 is moved from the seat cushion 2 to the storage floor by the urging force of the spiral spring. Rotation is started to the front side of the seat around the seat rotation shaft 12 so as to be moved.
The detachable leg 30 starts to rotate toward the seat cushion 2 around the leg rotation shaft 28a with respect to the seat cushion 2 in conjunction with the rotation of the seat back 1. At this time, the detachable leg 30 is in a state of being stretched between the seat cushion 2 and the vehicle body floor side, so that the seat cushion 2 and the seat back 1 can be moved stably.
Note that a known cable (not shown) is connected between the operation lever 1c and the reclining device 13, and the cable is pulled by the operation of the operation lever 1c, thereby releasing the locked state.

When the seat back 1 reaches a predetermined rotational position as shown in FIG. 9A, the detachable leg 30 is detached from the leg holding member 50.
The detached detachable leg 30 rides on the upper surface of the base cover 60 and rotates so as to be folded toward the seat cushion 2 around the leg rotation shaft 28a against the urging force of the spring member 28b. Then, when the attachment / detachment leg 30 reaches a predetermined rotation position, the attachment / detachment leg 30 is locked in a state of being accommodated on the seat cushion 2 side by the leg rotation device 28.

Furthermore, when the seat back 1 reaches a predetermined rotational position as shown in FIG. 9B, the front portion of the seat cushion 2 comes into contact with the storage floor surface before the attachment / detachment leg 30.
As a result of the above series of operations, as shown in FIG. 9C, the seat body is stored on the storage floor, and the vehicle seat S is switched to the stored state.
The seat cushion 2 is locked by the cushion rotating device 25 when the seat cushion 2 is in the stowed state, specifically when the seat back 1 is folded to the seat cushion 2 side.

<Seat tip up operation>
Next, the operation of moving the seat body from the stored state to the tip-up state will be described with reference to FIG.
When the vehicle seat S is in the storage state shown in FIG. 10A, the occupant manually raises the seat body to switch to the tip-up state shown in FIG. 10B.
At this time, since the cushion rotation device 25 locks the rotation operation of the seat cushion 2, the seat cushion 2 can be raised integrally by raising the seat back 1 upward.
In the tip-up state, a large cargo space can be secured on the front side of the seat by sliding the upper rail 7b toward the rear side of the seat with respect to the lower rail 7a.

  When the vehicle seat S is switched to the tip-up state shown in FIG. 10B, the seat back 1 is returned to the same position as that in the use state and is locked in a standing posture by the reclining device 13.

<Seat return operation>
Next, an operation for moving the seat body from the tip-up state to the use state will be described with reference to FIG.
When the vehicle seat S is moved from the tip-up state to the use state, as shown in FIG. 11A, for example, the detachable leg 30 that functions as an operation portion is operated.
When the occupant pulls the detachable leg 30 upward about the leg rotation shaft 28a, in other words, by pulling it in the direction away from the seat cushion 2, the cushion rotation device 25 and the leg rotation device 28 are locked. Canceled.
A known cable (not shown) is connected between the attachment / detachment leg 30 and the cushion rotation device 25, and the cable is pulled by the operation of the attachment / detachment leg 30 to release the locked state. Yes.

The seat cushion 2 rotates downward with respect to the seat back 1 by the urging force of the spiral spring 27 as shown in FIG.
The attachment / detachment leg 30 rotates about the leg rotation shaft 28a to a position where it can be attached to the leg holding member 50 by the urging force of the spring member 28b as the leg rotation device 28 is released, and is attached to the leg holding member 50. Is done.
At this time, the detachable leg 30 moves toward the leg holding member 50 attached to the lower end side of the leg accommodating recess 62 by being guided by the leg accommodating recess 62 and the leg movement restricting portion 63 in the base cover 60. To come.
By the series of operations, the vehicle seat S returns to the use state shown in FIG.

<Other embodiments>
In the above embodiment, as shown in FIG. 8, the storage floor is formed in front of the seat of the vehicle seat S, but the storage floor is formed in the rear of the vehicle seat S without any particular limitation. Also good.
In that case, it is desirable that the positional relationship between the seat rotation shaft 12 and the detachable leg 30 in the front-rear direction of the seat is reversed.

  In the said embodiment, as shown in FIG. 2, although the anchor member 9 is connected with the upper rail 7b via the rail connection part 7c, it may be directly connected with the upper rail 7b, without being specifically limited. However, they may be connected via other components.

In the above embodiment, as shown in FIGS. 2 and 3, the reclining device 13 is connected to the rail device 7 (upper rail 7 b) on the vehicle body floor via the support base 40, but is not particularly limited. Further, the support base 40 may be directly attached to the upper rail 7b without using it.
Further, the reclining device 13 may directly connect the seat back 1 and the support base 40 without using the connection bracket 11. Further, it is of course possible to directly connect the seat back 1 and the upper rail 7b without using the support base 40.

  In the above-described embodiment, a stowable vehicle seat used for an automobile has been described as a specific example. However, the seat is not limited to this, and a vehicle seat such as a train or a bus, or a vehicle seat such as an airplane or a ship. Can also be used.

In the present embodiment, the vehicle seat S according to the present invention has been mainly described.
However, said embodiment is only an example for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.

S Vehicle seat 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 1c Operation lever 2 Seat cushion 3 Headrest 6 Floor connecting member 7 Rail device 7a Lower rail 7b Upper rail 7c Rail connecting portion 8 Rail lock device 8a Rail lock Main body 8b Rotating bar 8c Rotating shaft 8d First operation strap 8e Second operation strap 8f Towing cable 8g Strap retaining groove 9 Anchor member 10 Back frame 11 Connecting bracket 12 Seat rotating shaft 13 Reclining device 13a Licra body 14 Licra attachment Bracket 20 Cushion frame 21 Side frame 22 Front connection pipe 23 Center connection pipe 24 Pan frame 25 Cushion rotation device 26 Cushion rotation shaft 27 Spiral spring 28 Leg rotation Device 28a Leg rotation shaft 28b Spring member 30 Detachable leg 31 Leg body part 32 Leg connecting part 40 Support base 41 Side base part 42 First base connecting part 43 Second base connecting part 44 Reinforcement base part 45 Holding member support part 50 Leg Holding member 51 Side wall portion 52 Bottom wall portion 53 Curled portion 54 Inertial locking device 60 Base cover 61 Front cover 62 Leg receiving recess 63 Leg movement restricting portion 64 Rear cover 65 Anchor through hole 66 Strap through hole 67 Partition wall portion 68 Reinforcement rib

Claims (14)

A vehicle seat including a seat body having a seat back serving as a backrest, and a seat cushion coupled to the seat back and serving as a seating portion,
Left and right lower rails fixed on the vehicle body floor and extending in the longitudinal direction of the seat;
Left and right upper rails slidably mounted along the lower rail and supporting the seat body,
An anchor member for connecting a child seat is attached to a rear portion of the upper rail. The seat body can be stored at a position lower than the vehicle body floor,
A support base mounted on the left and right upper rails and supporting the seat body;
A seat rotation shaft attached to the support base and coupled to one end side of the seat body in the seat front-rear direction so that the seat body can pivot in the seat front-rear direction;
2. The vehicle seat according to claim 1, comprising: an upper end portion attached to the other end side of the seat body, and a lower end portion detachably supported on the support base. . A rail locking device capable of locking the upper rail while being supported by the lower rail;
The rail lock device has an operation strap for switching between a locked state in which the upper rail is locked and a unlocked state,
The vehicle seat according to claim 1, wherein the operation strap is disposed around the anchor member. A rail connecting portion for connecting rear portions of the left and right upper rails;
The vehicle seat according to claim 3, wherein the anchor member and the operation strap are attached to the rail connecting portion. The seat body includes a headrest having left and right headrest pillars connected to an upper end of the seat back and serving as a skeleton,
The vehicle seat according to claim 4, wherein the anchor member is disposed between the left and right headrest pillars. A reclining device that is disposed on one of the left and right side portions of the seat body and that rotatably connects the seat body to the vehicle body floor side;
6. The vehicle seat according to claim 4, wherein the anchor member is disposed closer to the reclining device than a central portion of the left and right upper rails in the seat width direction. The operation strap is disposed at a substantially central portion of the left and right upper rails in the seat width direction,
The vehicle seat according to claim 6, wherein the anchor member is disposed between the operation strap and the reclining device. A cover for covering the anchor member and the operation strap from the outside;
The vehicle seat according to any one of claims 4 to 7, wherein the cover includes a partition wall section that partitions the anchor member and the operation strap.   The vehicle seat according to claim 8, wherein the cover is provided with a reinforcing rib provided around the anchor member and abutting against the rail connecting portion. A strap through hole for penetrating the operation strap is formed in the cover,
The vehicle seat according to claim 8 or 9, wherein the strap through hole extends along an extending direction of the operation strap. The rail lock device connects the operation strap and the upper rail, and causes the engaged portion provided on the upper rail to be detached from the engagement portion provided on the lower rail as the operation strap is pulled. A rail lock body for releasing the upper rail from the locked state;
The rail lock body is provided with a strap latching groove for latching one end of the operation strap,
11. The opening portion of the strap latching groove has a guide shape for guiding one end of the operation strap into the strap latching groove. The vehicle seat described in 1.   The vehicle seat according to claim 11, wherein the strap retaining groove is formed to be wider than the opening portion.   The vehicle seat according to claim 11 or 12, wherein the opening portion is formed so as to become narrower toward a bottom portion in a depth direction of the strap latching groove. The operation strap is a first operation strap,
The rail lock device is
A second operation strap attached to a portion different from the first operation strap with respect to the upper rail;
The second operation strap and a traction cable for connecting the end portion of the rail lock main body with respect to the end portion of the rail lock body. The vehicle seat according to any one of the above.

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