JP6646238B2 - Vehicle seat - Google Patents

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

The vehicle seat described in Patent Literature 1 is attached to a vehicle body floor and rotatably supports a seat back, and a holding groove whose upper end supports a front portion of a seat cushion and whose lower end is fixed to a storage floor. And a leg member rotatably held in the housing.
During the storage operation of the seat body, the seat back rotates to move the seat cushion to the storage floor with respect to the vehicle body floor, and the leg members rotate about the holding groove in conjunction with the seat back, thereby moving the seat body. It can be stored on the storage floor.
Further, the vehicle seat is configured to be switchable from a use state in which the occupant can sit down to a tip-up state in which the leg member is detached from the holding groove and the seat cushion is flipped up.

JP 2009-67309 A

By the way, in a seat capable of storing a seat body as disclosed in Patent Document 1, a mounting shaft and a holding groove which constitute a storage structure are usually provided for the purpose of protecting from an external impact and preventing intrusion of foreign matter. A cover made of resin is provided to cover the components from above.
Such a cover is generally formed in a bottomed housing shape, and covers an upper portion and a side portion such as a mounting shaft and a holding groove.
However, since the seat portion is erected above the use state, when assembling the cover, the work order is regulated, and the work becomes complicated.
Against this background, there is a technique for dividing the cover to improve the working efficiency. In this way, by dividing the cover, each cover piece can be inserted and united, thereby improving workability.
However, there was a problem that the positioning of each cover piece was complicated.
In addition, there has been a demand for further improving the rigidity of the joining portion.
Further, there has been a demand for securing designability by making it difficult to visually recognize the joined portion.

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 capable of securing higher rigidity .
Another object of the present invention is to provide a vehicle seat capable of improving the efficiency of a manufacturing operation by securing a degree of freedom in an operation sequence .
Another object of the present invention is to provide a vehicle seat capable of ensuring designability.

The object of the present invention is to provide a vehicle seat according to the present invention, comprising: a seat body having a seatback serving as a backrest portion and a seat cushion connected to the seatback and serving as a seating portion. A vehicle seat that can be switched between a state and a movement state in which the seat body is moved from the use state, and a pair of side base portions provided on a vehicle body floor side, and attached to the side base portions. A seat rotation shaft connected to one end of the seat body in the front-rear direction or the seat width direction of the seat body so as to be rotatable, and a base cover that covers the side base portion, base cover includes a front cover, on the rear cover, I der that is configured to be divided in the longitudinal direction of the vehicle seat, and the rear end portion of the front cover Wherein the front end portion of the rear cover, is solved by being fixed while holding the disposed a cover fixed frame so as to bridge the pair of the side base portion.

The base cover according to the present invention has a configuration that can be divided into a front cover and a rear cover.
Therefore, the rigidity of the base cover can be generally improved by assembling.
In addition, during assembly, the rear end of the front cover and the front end of the rear cover are connected. At this time, the cover fixing frame provided so as to bridge the pair of support members is used. It is connected in the state of being pinched.
In other words, the completed base cover is connected with the front cover and the rear cover while holding the cover fixing frame at the rear end of the front cover and the front end of the rear cover.
Therefore, at the time of the assembling work, the cover fixing frame may be used as a reference for positioning, and positioning is facilitated.

At this time, before Symbol seat pivot axis is intended to be provided to the pair of the side base portion, the cover fixing frame, when being configured to be coupled to the rear side of shaft the seat times Since the connecting portion between the front cover and the rear cover is hard to be visually recognized, it is preferable in terms of design.
Further, at this time, before Symbol base cover is a pair of the side base portions, it is preferable that is disposed so as to cover the drive mechanism located below the side base portion.
With this configuration, when a load is applied from above or the like, the drive mechanism disposed at that position (the lower position between the pair of side base portions) can be protected. In addition, it is possible to effectively prevent intrusion (dust, moisture, etc.) from entering the drive mechanism.

Moreover, further this time, the widthwise end portion a rear end portion of the front SL front cover, with the front side engagement portion for fixing the rear cover is formed, the front end of the rear cover A rear side fitting portion for fixing the front cover is formed at the end in the width direction, and in a state where the base cover is assembled, the front side fitting portion and the It is preferable that the rear side fitting portion is configured to be fitted.
With this configuration, the positioning is further facilitated, and the assembling workability is improved.

At this time, a seat belt buckle support member is disposed on the vehicle seat, and the front cover and the rear cover are separated from each other in a front-rear direction from a fastening position of the seat belt buckle support member. It is preferable that it is comprised.
With such a configuration, the base cover can be attached even after the skeleton of the vehicle seat is assembled. Therefore, the degree of freedom of the assembling order is secured.

Further, at this time, a recess is formed on the front surface of the front portion of the front cover, the recess being recessed from the upper side to the lower side, and the cover fixing frame is disposed on the seat rear side with respect to the recess. It is suitable .

According to the present invention, the base cover is configured to be able to be divided into a front cover and a rear cover, and in general, the rigidity of the base cover can be improved by assembling. Also,
These are configured such that a cover fixing frame arranged so as to bridge a pair of support members is connected while being sandwiched between the two.
Therefore, at the time of the assembling work, the cover fixing frame serves as a reference for positioning, and positioning is facilitated.
ADVANTAGE OF THE INVENTION According to this invention, it becomes easy to rotate a front cover and / or a rear cover centering on a cover fixing frame, and assembling work becomes easy.
ADVANTAGE OF THE INVENTION According to this invention, the connection part of a front cover and a back cover becomes difficult to be visually recognized, and high design property can be implement | achieved.
ADVANTAGE OF THE INVENTION According to this invention, the drive mechanism arrange | positioned at a position below a pair of side base parts can be protected effectively.
ADVANTAGE OF THE INVENTION According to this invention, while fixing a cover fixing frame firmly, the assembly positional accuracy of a front cover and a rear cover improves.
According to the present invention, the rigidity of the other locking claw is improved, and the connection can be performed firmly .
According to the present invention, since a structure in which the front side fitting portion and the rear fitting portion are fitted is further provided, positioning is further facilitated, and assembling workability is improved .
According to the present invention, the base cover can be attached even after assembling the framework of the vehicle seat, so that the degree of freedom of the assembling order is secured and the assembling workability is improved.

It is a perspective view of the vehicle seat concerning this embodiment. FIG. 2 is a perspective view of a seat frame serving as a skeleton of a vehicle seat. It is a perspective view of a support base of a vehicle seat. It is a perspective view of a base cover which protects a support base. FIG. 4 is an exploded perspective view when the base cover is viewed from the back side. It is an explanatory view showing an assembled state of a base cover. It is the A section enlarged view of FIG. It is explanatory drawing which shows the connection state of a front base cover and a rear base cover. It is the B section enlarged view of FIG. It is explanatory drawing which shows the detail of the connection part of a front base cover and a back base cover. It is a side view of a vehicle seat, and is a figure explaining operation which moves from a use state to a storage state. It is a side view of a vehicle seat, and is a figure explaining operation which moves to a storage state. It is a side view of a vehicle seat, and is a figure explaining operation which moves from a storage state to a tip-up state. It is a side view of a vehicle seat, and is a figure explaining operation which returns 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. 1 to 14.
The present embodiment relates to a vehicle seat capable of improving work efficiency by facilitating alignment of a front cover and a rear cover, which are individual cover pieces, and securing a degree of freedom in a work order. In addition, in the base cover according to the present embodiment, higher rigidity and design are ensured.
The side where 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, for example, a rear seat of the vehicle. In a vehicle provided with three rows of seats in the front-rear direction of the vehicle, it can also be used as a second row middle seat.
As shown in FIG. 1, the vehicle seat S is mounted on a vehicle body floor including a seatback 1, a seat cushion 2, and a headrest 3, and supports the seat body so as to be movable in the front-rear direction. Left and right rail devices 4, a support base 40 mounted on the rail device 4, a detachable leg 30 mounted between the seat cushion 2 and the support base 40, and supporting the seat cushion 2 from below; And a base cover 60 for detachably holding the lower end of the removable leg 30 and a base cover 60 for covering the support base 40 from above.

As shown in FIG. 2, the vehicle seat S includes a reclining device 13 that connects the seat back 1 to a support base 40 so as to be rotatable around a seat rotation shaft 12, The seat cushion 2 includes a cushion rotation device 25 that rotatably connects the seat cushion 2 and a leg rotation device 28 that rotatably connects the detachable leg 30 to the seat cushion 2.
As shown in FIG. 10, a concave storage floor formed at a lower position than the vehicle body floor is provided on the front side of the vehicle seat S.

The seat S for the vehicle can be arranged in three different forms: a use state in which an occupant can sit, a storage state in which the seat body is stored on a storage floor, and a tip-up state in which the seat body is flipped up. It is a sheet.
Specifically, when the occupant pulls the operation strap (not shown) from the use state shown in FIG. 10A, the seat S for the vehicle is folded forward and folded down, and is stored on the storage floor. The state is switched to the housed state shown in FIG. 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 an operation lever from the tip-up state, the seat cushion 2 rotates below the seat 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 for supporting the back of the occupant from behind, and the cushion pad 1a is placed on a back frame 10 shown in FIG. It is configured to be covered.
The seat cushion 2 is a seating portion for supporting an occupant from below, and the cushion pad 2a is placed on a cushion frame 20, which is a skeleton shown in FIG. 2, and is covered with a skin 2b from above the cushion pad 2a. It is configured.
The headrest 3 is a head that supports the occupant's head from behind, and is configured by placing a cushion pad 3a on a pillar (not shown) serving as a core material and covering the cushion pad 3a with a skin 3b.

The rail device 4 is disposed between the seat body and the vehicle body floor in the up-down direction. As shown in FIG. 2, the rail device 4 is fixed to the vehicle body floor, and includes left and right lower rails 4a extending in the seat front-rear direction. And left and right upper rails 4b slidably supported along.
A support base 40 is provided on the upper surfaces of the left and right upper rails 4b.

The back frame 10 is formed of a substantially rectangular frame-like body serving as a skeleton of the seat back 1, and is connected to the support base 40 at the lower left and right outer surfaces of the back frame 10 as shown in FIG. 2. Left and right connecting brackets 11 are attached.
The connection bracket 11 is formed 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.
At the lower end of the left connection bracket 11, a seat rotation shaft 12 is provided which is supported by the support base 40 in the left-right direction, and at the lower end of the right connection bracket 11, the back frame 10 with respect to the support base 40 is provided. A reclining device 13 for rotatably connecting the two is mounted.

The reclining device 13 is a known device, and is disposed on the left and right inner side surfaces of the connection bracket 11 as shown in FIG. 2 to suppress interference with the cushion frame 20 in the left and right direction.
The reclining device 13 mainly includes a seat rotation shaft 12 and a spiral spring 14 that rotates the back frame 10 forward about the seat rotation shaft 12 to urge the back frame 10 into a stored state.
The seat rotation shaft 12 is supported by the back frame 10 and the support base 40 in the left-right direction. One end of the spiral spring 14 is locked to the back frame 10 and the other end is connected to the support base 40. Locked.
The reclining device 13 can be switched to a locked state in which the rotating operation of the back frame 10 is locked, and the back frame 10 is locked in the upright posture shown in FIG. 1 and is locked by operating an operation strap (not shown). Is released, and the back frame 10 can be rotated forward by the urging force of the spiral spring 14 to be folded toward the vehicle body floor.

  The cushion frame 20 is formed of a substantially rectangular frame-like body serving as a skeleton of the seat cushion 2, and as shown in FIG. 2, left and right side frames 21 disposed on the left and right sides, and a front portion of each side frame 21. , A central connecting pipe 23 that connects a substantially central portion of each side frame in the front-rear direction, a pan frame 24 as a plate-shaped frame that connects the front connecting pipe 22 and the central connecting pipe 23, It is mainly composed of

The side frame 21 is made of a sheet metal member extending in the front-rear direction of the seat, and a front portion thereof is connected to the front connection pipe 22, and a rear portion thereof is rotatably connected to the cushion frame 20 with respect to the back frame 10. Cushion rotation device 25 is attached.
Further, the front connecting pipe 22 is formed of a substantially U-shaped pipe member, and a leg rotating device 28 for rotatably connecting the detachable leg 30 to the cushion frame 20 is attached to left and right inner surfaces thereof. I have.

The cushion rotation device 25 is a known device, and as shown in FIG. 2, a cushion rotation shaft 26, a spiral spring 27 for urging the cushion frame 20 downward around the cushion rotation 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. 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. Locked.
The cushion rotation device 25 can be switched to a lock state in which the rotation operation of the cushion frame 20 is locked.
As shown in FIG. 11C, when the seat body is stored on the storage floor, specifically, when the back frame 10 is folded toward the cushion frame 20 as shown in FIG. The rotation operation of the cushion frame 20 is locked. Then, as shown in FIG. 13A, when the detachable leg 30 functioning as an 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 spring member that urges the leg rotation shaft 28 a and the detachable leg 30 in a direction opposite to the cushion frame 20 around the leg rotation shaft 28 a, in other words, in a direction away from the cushion frame 20. 28b.
The leg rotation shaft 28a is axially supported by the front connection pipe 22 and the upper end of the detachable leg 30 in the left-right direction. One end of the spring member 28b is locked to the cushion frame 20 side, and the other end is attached to the detachable leg. Locked on the 30 side.
The leg rotation device 28 can be switched to a locked state in which the rotation of the detachable leg 30 is locked, and the detachable leg 30 is detached from the leg holding member 50 as shown in FIG. When it is stored on the side of the side 20, the rotation of the detachable leg 30 is locked. Then, as shown in FIG. 13A, when the locked detachable leg 30 is pulled, the locked state is released and the detachable leg 30 is returned to the use state by the urging force of the spring member 28b. 50 can be moved to a position where it can be mounted.

As shown in FIG. 2, the detachable legs 30 are substantially U-shaped pipe members that support the seat cushion 2, and connect leg bodies 31 disposed on the left and right sides and lower ends of the leg bodies 31. And a leg connecting portion 32.
The upper end of the leg 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 a substantially central portion in the left-right direction of the leg connecting portion 32 is detachably held by the leg holding member 50. Have been.
The upper end of the attachment / detachment leg 30 projects forward of the seat from the lower end of the attachment / detachment leg 30, and is inclined forward and upward from the lower end of the attachment / detachment leg 30 toward the upper end of the attachment / detachment leg 30.

  The support base 40 is a member that supports the seat body. As shown in FIG. 3, the support base 40 includes left and right side base portions 41 arranged on the left and right sides along the upper rail 4b, and a front portion of each side base portion 41. A first base connecting portion 42 for connection, a second base connecting portion 43 for connecting a substantially central portion of each side base portion 41, left and right reinforcing base portions 44 attached to the upper surface of each side base portion 41, A cover fixing frame that connects the base connecting portion 42 and the second base connecting portion 43 to each other, and that connects the holding member supporting portion 45 that supports the leg holding member 50 and the side base portions 41 that are arranged on the left and right at the rear. 46.

The side base portion 41 is formed of a substantially crank-shaped sheet metal member that is elongated in the front-rear direction, and as shown in FIG. 3, a support wall portion 41a connected to the upper surface of the upper rail 4b, and left and right inner ends of the support wall portion 41a. An inner wall portion 41b bent downward from the inner wall portion, and an outer wall portion 41c bent upward from the left and right outer ends of the support wall portion 41a.
As shown in FIG. 3, the first base connecting portion 42 and the second base connecting portion 43 are formed of substantially circular pipe members extending in the left-right direction, and are arranged at a predetermined distance in the front-rear direction. .

As shown in FIG. 3, the reinforcing base portion 44 is formed of a substantially crank-shaped sheet metal member that is long in the front-rear direction, and has a connecting wall portion 44 a connected to the upper surface of the side base portion 41 and left and right inner sides of the connecting wall portion 44 a. An inner wall portion 44b bent downward from the end portion, and an outer wall portion 44c bent upward from the left and right outer end portions of the connecting wall portion 44a.
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 reinforcing base portion 44 vertically overlaps the side base portion 41 to form a closed cross-sectional structure, and the support base 40 has a middle shape.

As shown in FIG. 3, the holding member support portion 45 is a curved sheet metal member that supports the leg holding member 50, extends in the front-rear direction of the seat, and has a substantially central portion opposite to the detachable leg 30 side. A concave bent portion 45a that is depressed downward toward the vehicle body floor side is formed.
The front part of the holding member support part 45 is attached to the first base connection part 42, and the rear part of the holding member support part 45 is attached to the second base connection part 43.
As shown in FIG. 3, a leg holding member 50 is attached to the upper surface of the bent portion 45a. As shown in FIG. 6, a cover mounting portion 65 provided on the base cover 60 is bolted at a position sandwiching the leg holding member 50 in the left-right direction.

The cover fixing frame 46 is a rod-shaped member having a circular cross section, and is provided behind the side base portions 41, 41 (at least behind the seat rotation shaft 12 constituting the reclining device 13). Connect between.
The cover fixing frame 46 is configured to be disposed at a connecting portion between a front cover 61 and a rear cover 71 constituting a base cover 60 described later. The front cover 61 and the rear cover 71 are fixed to the cover. They are connected with the frame 46 held therebetween.
This configuration is a main configuration of the present embodiment, and will be described later in detail.
As described above, the cover fixing frame 46 is disposed rearward of the seat rotation shaft 12 constituting the reclining device 13, so that even if the vehicle seat S is displaced, The connection portion with the rear cover 71 is less visible, and the design is improved.
Further, since the cover fixing frame 46 is a rod-shaped member having a circular cross section (that is, a round bar), when the front cover 61 and the rear cover 71 are assembled, the cover fixing frame 46 is rotatable and has no edges on the surface. Is easy.

As shown in FIG. 3, the leg holding member 50 is formed of a substantially U-shaped clip member for detachably holding the detachable leg 30, and a pair of side walls 51 and a bottom connecting the lower ends of the side walls 51. And a wall 52.
Each side wall portion 51 is bent in a direction approaching each other from its lower end portion toward its upper end portion, in other words, is bent inwardly of the opening so as to narrow the opening portion of the leg holding member 50, At an upper end portion, a curled portion 53 that is bent in the outward direction of the opening is formed.

The bottom wall portion 52 has a curved shape and is attached along the bent portion 45a of the holding member support portion 45.
The pair of curled portions 53 respectively penetrate through openings provided in the base cover 60 and are exposed to the outside on the removable leg 30 side.

As shown in FIG. 3, the leg holding member 50 is supported by the holding member support 45 at a position where the leg holding member 50 is inclined forward at a predetermined inclination angle with respect to the horizontal plane. In other words, the leg holding member 50 is supported by the holding member support 45 at a position where its opening is directed obliquely upward and forward.
An inertia lock device 54 that locks the leg connecting portion 32 of the detachable leg 30 with the leg holding member 50 held in the event of a rear collision of the vehicle is disposed in a portion adjacent to the leg holding member 50.
The inertial lock device 54 is formed of a known device, is attached to the support base 40, is disposed between the first base connecting portion 42 and the second base connecting portion 43 in the front-rear direction, and has a leg holding member in the front-rear direction. It is arranged at a position overlapping with the member 50.

The base cover 60 is formed of a resin molded product that covers the entire support base 40 from above, and as shown in FIG. 1, a front cover 61 disposed on the front side of the seat, and a rear cover 71 disposed behind the front cover 61. And is composed of The front cover 61 and the rear cover 71 are snap-fitted with the cover fixing frame 46 held therebetween.
The base cover 60 is for covering a drive mechanism disposed below the support bases 40 and 40, and protects the drive mechanism.

<About the front cover>
As shown in FIGS. 1 and 4, the front cover 61 has a guide shape for guiding the detachable legs 30 that move together with the seat body.
Specifically, the front cover 61 is provided with a leg accommodation recess 62 for accommodating the detachable leg 30 and a seat rearward of the leg accommodation recess 62, and the front cover 61 moves the detachable leg 30 behind the leg accommodation recess 62. The vehicle includes a leg movement restricting portion 63 that regulates, and a pair of base contact portions 64 that are disposed in front of the seat with respect to the leg housing concave portion 62 and can contact a part of the seat cushion 2.
The front cover 61 has a cover mounting portion 65 that is disposed at the bottom of the leg receiving recess 62 and that can be bolted to the support base 40.

The leg accommodating concave portion 62 is formed of a substantially U-shaped concave portion that is recessed downward from a substantially central portion of the upper surface of the base cover 60 and extends in the left-right direction.
The leg housing recess 62 includes a pair of front and rear side wall portions 62a, a pair of left and right side wall portions 62b, and a bottom wall portion 62c connecting lower end portions of these side wall portions. It is arranged at a position facing.
The pair of front and rear side wall portions 62a and the pair of left and right side wall portions 62b are formed so as to become wider from the bottom wall portion 62c toward the opening, and have inclined surfaces.

As shown in FIG. 4, substantially rectangular openings are formed in the left and right center portions of the pair of front and rear side wall portions 62 a of the leg housing recesses 62, respectively. A part of the member 50 is exposed to the outside through the opening.
Further, as shown in FIG. 4, a vertically long opening is formed in a continuous portion of the rear front and rear side wall portions 62a and the bottom wall portion 62c, and the inertia locking device is formed from the back side of the base cover 60. A part of 54 is exposed to the outside through the opening.
Further, a concave cover attaching portion 65 that is recessed downward from the surface of the base cover 60 toward the support base 40 is formed in a continuous portion of the front and rear side wall portions 62a and the bottom wall portion 62c.

As shown in FIG. 4, the leg movement restricting portion 63 includes a portion that protrudes from a substantially central portion of the upper surface of the base cover 60 toward the front of the seat, and is formed continuously from a rear portion of the leg housing recess 62. It is provided extending in the left-right direction.
The upper end of the leg movement restricting portion 63 protrudes slightly above the upper surface of the base cover 60.
Therefore, when the detachable leg 30 is accommodated in the leg accommodating recess 62, the leg movement restricting portion 63 regulates the backward movement of the detachable leg 30 and can guide the detachable leg 30 toward the leg accommodating recess 62.

As shown in FIG. 4, the cover attaching portion 65 is formed of a substantially circular concave portion that is recessed downward from the upper surface of the base cover 60, and is formed in a pair at intervals in the sheet width direction. It is bolted in contact.
More specifically, the lower end portion of the cover attachment portion 65 is attached to a bent portion 45 a that is recessed downward in the holding member support portion 45.

Each cover mounting portion 65 is disposed at a position overlapping the leg holding member 50 in the seat front-rear direction, and at least an opening portion projects beyond the leg holding member 50 in front of the seat.
Further, each cover mounting portion 65 is disposed at a position sandwiching the leg holding member 50 in the seat width direction, and the right cover mounting portion 65 is disposed between the leg holding member 50 and the inertial lock device 54. I have.

  In the base cover 60, a reinforcing rib 66 having a predetermined shape is formed on the back surface of each of the leg housing concave portion 62, the leg movement restricting portion 63, and the cover attaching portion 65, as shown in FIG. Therefore, the base cover 60 has a shape in which the support rigidity is improved at the back side portion that comes into contact with other components.

In the base cover 60, a pair of contact ribs 67 are formed on the back surface of the leg housing recess 62 so as to sandwich the cover mounting portion 65 in the sheet width direction, as shown in FIG.
The contact rib 67 extends along the inclined surface of the left and right side wall portions 62 b of the leg receiving recess 62, and protrudes to contact the support base 40.
Therefore, it becomes easy to fit the base cover 60 into the support base 40.

A front connecting portion 68 is formed on the rear end side of the front cover 61.
This is a mechanism for connecting the rear cover 71.
The front side connection portion 68 is configured to include a plurality of first front locking claws 68a and a plurality of second front locking claws 68b.
The first front locking claw 68 a is a substantially rectangular claw, and is formed at a position slightly forward from the rear end of the front cover 61.
The first front locking claw 68a protrudes toward the lower side of the vehicle body in a state where the free end side is inclined toward the rear end side from the base end (FIG. 5 shows the lower surface side). Since it is shown above, it protrudes upward in this figure).
The plurality of first front locking claws 68 a are provided at equal intervals along the rear end line of the front cover 61.

The second front locking claw 68b is a substantially rectangular claw, and protrudes downward from the vehicle body with the free end side inclined so as to be disposed toward the rear end side from the base end. (Since FIG. 5 shows the lower surface side upward, it protrudes upward in this figure.)
In the present embodiment, the size of the second front locking claw 68b is slightly smaller than the size of the first front locking claw 68a. In particular, the height of the second front locking claw 68b (the distance from the base end surface of the front cover 61 to the free end) is configured to be smaller than the height of the first front locking claw 68a. The assemblability to the rear cover 71 is improved.

The plurality of second front locking claws 68b are provided at equal intervals along the rear end (edge portion) of the front cover 61, and each of the second front locking claws 68b is adjacent to the first first locking claw 68b. It is configured to be arranged between the front locking claws 68a, 68a (an intermediate point between the adjacent first front locking claws 68a, 68a in the width direction).
Thereby, the accuracy and rigidity of the assembly position can be improved.

In the present embodiment, an example is shown in which five first front locking claws 68a are formed and four second front locking claws 68b are formed, but the number is of course limited to this. It can be changed according to the application state.
On the surface facing the rear side of the first front locking claw 68a, three front ribs R1 extending from the base end side to the free end side are formed (formed on both sides in the width direction and between them). , Increasing rigidity.
Similarly, on the surface facing the front side of the second front locking claw 68b, two front ribs R1 extending from the base end side to the free end side are formed (formed on both sides in the width direction), and the rigidity is increased. Is increasing.

At the rear end side of the front cover 61, a circular cup-shaped front reclining device disposing portion 69A on which the reclining device 13 is disposed is formed at one end portion in the width direction.
At the other end in the width direction, a front seat belt buckle support member through hole 69B and a front connection bracket through hole 69C are sequentially formed from the outside.
A front side fitting hole 69D is formed outside the front seat belt buckle support member through hole 69B. In the present embodiment, two substantially rectangular holes are formed in parallel in the vertical direction, and the front side fitting hole 69D is formed with the rear side fitting claw 79D formed in the rear cover 71. Fit.

<About the rear cover>
The rear cover 71 is a bottomed housing-like member that is connected to the front cover 61 and covers the rear side.
Further, a rear connecting portion 78 is formed on the front end side of the rear cover 71.
This is a mechanism for connecting the front cover 61.
The rear connecting portion 78 includes a plurality of rear locking claws 78a, a plurality of first front locking claw through holes 78b, and a plurality of second front locking claw through holes 78c. .
A plurality of rear locking claws 78a are formed in parallel at a position slightly forward from the front end of the rear cover 71.
The rear locking claw 78a includes a substantially rectangular rear locking claw hanging piece 171 protruding downward from the rear cover 71 toward the vehicle body, and a rear locking claw extending forward from the rear locking claw hanging piece 171. A rear locking claw pressing piece 172 projecting substantially perpendicularly to the hanging piece 171 forms a substantially L-shape in side view.

In addition, in this embodiment, the width direction length of the rear locking claw pressing piece 172 is configured to be smaller than the width direction length of the rear locking claw hanging piece 171. Project from the vicinity of the center in the width direction of the rear locking claw hanging piece 171.
The reason for this is to increase the width of the base end to increase the rigidity of a portion that is subject to a high load during assembly.
In addition, the width of the rear locking claw pressing piece 172 is configured to be equal to or slightly larger than the width direction length of the first front locking claw 68a.
This is for efficiently receiving the pressing load from the first front locking claw 68a when assembled.
Further, three rear ribs R2 extending in the front-rear direction from the up-down direction are formed in the inner corner between the rear side of the rear locking claw hanging piece 171 and the base end (width direction). Formed between both sides and between them to increase rigidity.

The plurality of first front locking claw through holes 78b are rectangular holes formed near the front edge of the rear cover 71, and are formed in parallel at equal intervals along the front edge of the rear cover 71. Have been.
The first front locking claw through hole 78b is formed at a position where the first front locking claw 68a penetrates when assembled. The locking claw 68a is guided to the position of the free end of the rear locking claw pressing piece 172.

Further, the plurality of second front locking claw through-holes 78 c are substantially rectangular holes formed slightly behind the front end of the rear cover 71, and are formed along the front edge of the rear cover 71. They are formed in parallel at intervals.
Further, each of the second front locking claw through holes 78c is located between the adjacent first front locking claw through holes 78b, 78b (between the adjacent first front locking claw through holes 78b, 78b in the width direction). (An intermediate point), and the second front locking claw through holes 78c are formed at positions where the second front locking claw 68b penetrates when assembled.
Thereby, the accuracy and rigidity of the assembly position can be improved.

  In the present embodiment, five rear locking claws 78a and five first front locking claw through holes 78b are formed in accordance with the configuration of the front cover 61, and the second front locking claw through holes 78c are formed. Although the example in which four were formed was shown, of course, the number is not limited to this and can be changed according to the application state.

At the rear end side of the rear cover 71, a rear reclining device disposition portion 79A on which the reclining device 13 is disposed is formed at one end portion in the width direction.
At the other end in the width direction, a rear seat belt buckle support member through hole 79B and a rear connection bracket through hole 79C are sequentially formed from the outside.
When these are assembled, they are combined with the front reclining device disposing portion 69A formed on the front cover 61, the front seat belt buckle supporting member through hole 69B, and the front connecting bracket through hole 69C, and the reclining device is disposed. An installation portion H1, a seat belt buckle support member through hole H2, and a connection bracket through hole H3 are configured.

Further, a rear side fitting claw 79D is formed outside the rear seat belt buckle support member through hole 79B. In the present embodiment, two substantially rectangular claws projecting inward are formed in parallel in the vertical direction, and the rear side fitting claws 79D are formed on the front side formed on the front cover 61. It fits into the fitting hole 69D.
By further adopting such a fitting configuration, the positioning of the front cover 61 and the rear cover 71 becomes easier.
Further, by forming such a fitting configuration in the vicinity of the seat belt buckle supporting member through hole H2 and the connecting bracket through hole H3 which are formed as holes, the rigidity of the portion can be improved.

<Combination method>
Next, a method of configuring the base cover 60 by combining the front cover 61 and the rear cover 71 configured as described above will be described with reference to FIGS.
Initially, the base cover 60 is divided into a front cover 61 and a rear cover 71 as shown in FIG.
Finally, the front cover 61 and the rear cover 71 are connected to a first front locking claw 68a and a second front locking claw 68b formed on the rear end side of the front cover 61, as shown in FIGS. The rear cover 71 is engaged and fixed with the rear locking claw 78a (rear locking claw pressing piece 172) formed on the front end side of the rear cover 71 while holding the cover fixing frame 46 therebetween.
FIG. 8A shows a positional relationship between the rear locking claw 78a (rear locking claw pressing piece 172) formed on the front end side of the rear cover 71 and the cover fixing frame 46 at this time. FIG. 8B shows the positional relationship between the first front locking claw 68a and the second front locking claw 68b formed on the rear end side of the cover 61 and the cover fixing frame 46.

As an example, first, as shown in FIG. 8A, a rear locking claw 78a (a rear locking claw pressing piece 172) formed on the front end side of the rear cover 71 is arranged on the cover fixing frame 46.
That is, the cover fixing frame 46 is set so as to be disposed at the inner corners of the rear locking claw hanging piece 171 and the rear locking claw pressing piece 172 that constitute the rear locking claw 78a (that is, the rear locking claw). The cover fixing frame 46 is covered with the hanging piece 171 and the rear locking claw pressing piece 172).

Next, the first front locking claw 68a of the front cover 61 is passed through the first front locking claw through hole 78b of the rear cover 71 from above to below the vehicle seat, and at the same time, the second front locking claw of the front cover 61 is 68b is passed through the second front locking claw through hole 78c of the rear cover 71 from above to below the vehicle seat.
Thus, the free end side of the first front locking claw 68a presses the free end of the rear locking claw pressing piece 172 constituting the rear locking claw 78a from below the vehicle seat.
Further, with this, the pressing force of the first front locking claw 68a is applied to the cover fixing frame 46 disposed at the inner corner of the rear locking claw hanging piece 171 and the rear locking claw pressing piece 172. It is pressed upward by the rear locking claw pressing piece 172. For this reason, the cover fixing frame 46 is firmly pressed against the rear surface of the rear cover 71 by the rear locking claw pressing piece 172. As described above, the cover fixing frame 46 is firmly sandwiched, and, in the end, the front cover 61 and the rear cover 71 are firmly fixed to the cover fixing frame 46.

At this time, the second front locking claw 68b is connected to the cover fixing frame 46 between the adjacent first front locking claw 68a, 68a and the rear locking claw 78a, 78a (between each combination shape). It is in pressure contact, defines the rear position of the cover fixing frame 46, and further provides an engaging force.
In this manner, the first front locking claw 68a and the second front locking claw 68b formed on the rear end side of the front cover 61, and the rear locking claw 78a (rear side) formed on the front end side of the rear cover 71. FIG. 9 shows a detailed view of the fixed state in which the cover fixing frame 46 is sandwiched between the locking claw pressing pieces 172).
FIG. 6 shows a rear view (completed rear view) in a state where the base cover 60 is configured by combining the front cover 61 and the rear cover 71.

The connecting portion between the front cover 61 and the rear cover 71 includes a connecting portion between the lower end of the connecting bracket 11 and the support base 40 (near where the seat rotation shaft 12 is disposed), and a seat belt buckle supporting member (not shown). (See FIGS. 1 and 2 and FIGS. 6 to 8).
That is, the frame is configured to be able to be separated from the position, so that the base cover 60 can be attached after each frame is assembled. Therefore, the degree of freedom of the work procedure is increased and workability is improved.

Further, in the present embodiment, when the base cover 60 is attached to the support frame 40, the base cover 60 is fastened by tapping screws (see the circled position in FIG. 4 for the fastening location).
In the connecting portion between the front cover 61 and the rear cover 71, the fixing in the front-rear direction is firmly performed, but the cover fixing frame 46 is configured to be able to absorb a positional deviation of about the dimensional tolerance. .
That is, as shown in FIG. 10A, the front cover 61 and the rear cover 71 are separated from each other in the front-rear direction by a first front locking claw 68a, a second front locking claw 68b, Although it is firmly fixed at the three circled positions by the rear locking claws 78a, it is configured to be able to absorb a positional shift (about a dimensional tolerance) of the cover fixing frame 46.
Specifically, when the cover fixing frame 46 is displaced to the front side due to a displacement between the fastening point of the tapping screw and the cover fixing frame 46, the cover fixing frame 46 is connected as shown in FIG. When the frame 46 is shifted rearward, the frames 46 are connected as shown in FIG.
That is, in FIG. 10B and FIG. 10C, as in FIG. 10A, it is still fixed firmly in the front-rear direction at the three circled positions. It is shown that the position deviation is flexibly handled.
Therefore, according to the present embodiment, the positional deviation between the fastening point of the tapping screw and the cover fixing frame 46 can be absorbed in a state where the joining in the front-rear direction is firmly maintained.

<Sheet storage operation>
Next, an operation of moving the seat body from the use state to the storage state will be described with reference to FIGS. 11 and 12, the reclining device 13, the cushion rotation device 25, and the leg rotation device 28 indicate a locked state when illustrated by a black circle, and indicate an unlocked state when illustrated by a white circle. Shall be shown. 13 and 14 are the same.

  When the vehicle seat S is in the use state shown in FIG. 11A, the seat back 1 is supported by the support base 40, locked in the upright position by the reclining device 13, and connected to the seat back 1. The cushion 2 is supported from below by the detachable legs 30 held by the leg holding members 50.

When the vehicle seat S is moved from the use state to the storage state, for example, an operation strap (not shown) provided on the upper surface of the seat back 1 is operated.
When the occupant operates the operation strap, as shown in FIG. 11B, the locked state of the reclining device 13 is released, and the seat back 1 moves the seat cushion 2 to the storage floor by the urging force of the spiral spring 14. Rotation is started toward the front side of the seat around the seat rotation shaft 12 so as to move.
The detachable leg 30 starts rotating toward the seat cushion 2 around the leg rotation shaft 28 a with respect to the seat cushion 2 in conjunction with the rotation of the seat back 1. At this time, since the detachable legs 30 are in a state of being stretched between the seat cushion 2 and the vehicle body floor side, the seat cushion 2 and the seat back 1 can be moved stably.
A known cable (not shown) is connected between the operation strap and the reclining device 13, and the cable is pulled by operation of the operation strap to release the locked state.

When the seat back 1 reaches a predetermined rotation position as shown in FIG. 12A, the detachable leg 30 is detached from the leg holding member 50.
The detachable 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. When the detachable leg 30 reaches a predetermined rotation position, the leg 30 is locked by the leg rotation device 28 in a state of being stored on the seat cushion 2 side.

Further, as shown in FIG. 12B, when the seat back 1 reaches a predetermined rotation position, the front portion of the seat cushion 2 comes into contact with the storage floor surface before the detachable legs 30.
A sliding member (not shown) slidable with respect to the storage floor surface is attached to a front portion of the seat cushion 2, and the seat cushion 2 stably moves the storage floor surface toward the front of the seat. Can slide.

By the above series of operations, the seat body is stored on the storage floor, and the vehicle seat S is switched to the stored state, as shown in FIG.
The seat cushion 2 is locked by the cushion rotating device 25 when in the stored state, specifically, when the seat back 1 is folded toward the seat cushion 2.
The detachable leg 30 is disposed below the leg holding member 50 in the housed state.

<Sheet chip-up operation>
Next, an operation of moving the sheet 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 housed state shown in FIG. 13A, for example, when the occupant manually raises the seat body upward, the state is switched to the tip-up state shown in FIG. 13B.
At this time, since the cushion rotation device 25 locks the rotation of the seat cushion 2, the seat back 2 can be raised integrally by raising the seat back 1 upward.
When the upper rail 4b is slid with respect to the lower rail 4a toward the rear of the seat in the tip-up state, a larger luggage space can be secured at the front of the seat.

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

<Seat return operation>
Next, an operation of 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. 14A, for example, the detachable legs 30 functioning as operation levers are operated.
When the occupant pulls the detachable leg 30 upward about the leg rotation shaft 28a, in other words, pulls the detachable leg 30 away from the seat cushion 2, the locked state of the cushion rotation device 25 and the leg rotation device 28 is changed. It is released.
A known cable (not shown) is connected between the detachable leg 30 and the cushion rotation device 25, and the cable is pulled by the operation of the detachable leg 30 to release the locked state. I have.

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

<Other embodiments>
In the above embodiment, the storage floor is formed in front of the vehicle seat S, but the storage floor may be formed behind the vehicle seat S without any particular limitation.
In this case, it is desirable that the positional relationship between the seat rotation shaft 12 and the detachable legs 30 in the front-back direction of the seat be reversed.

In the above embodiment, as shown in FIG. 11, when the detachable leg 30 is switched from the use state to the storage state, the detachable leg 30 rotates rearward with respect to the seat cushion 2 around the leg rotation shaft 28 a to seat the seat cushion. Although it is configured to be housed on the side of the seat cushion 2, the detachable leg 30 is rotated around the leg rotation shaft 28 a toward the front of the seat and is housed on the side of the seat cushion 2 without any particular limitation. Is also good.
At this time, it is preferable that the upper end of the detachable leg 30 be disposed behind the lower end of the detachable leg 30 and be inclined upward rearward from the lower end of the detachable leg 30 toward the upper end of the detachable leg 30. Therefore, the housing can be easily rotated in the seat cushion 2 side.

In the above embodiment, as shown in FIG. 2, the support base 40 is fixed to the vehicle body floor via the rail device 4, but is not particularly limited, and is directly fixed to the vehicle body floor without using the rail device 4. May be changed as appropriate.
The seat back 1 and the support base 40 may be directly connected via the seat rotation shaft 12 without the need for the connection bracket 11.

In the above embodiment, as shown in FIG. 4, the cover attachment portion 65 has a concave shape recessed downward from the upper surface of the base cover 60, and is bolted in a state of contacting the support base 40 side. There is no particular limitation as long as it has a shape that can be attached to the support base 40 side.
In addition, as long as the cover attachment portion 65 is arranged in the peripheral portion of the leg holding member 50, the positional relationship in the seat front-back direction and the seat width direction may be appropriately changeable.

  In the above-described embodiment, a storable vehicle seat used for an automobile has been described as a specific example. However, the present invention is not limited to this. In addition to a vehicle seat such as a train and a bus, a vehicle seat such as an airplane and a ship is provided. It can also be used as

In the present embodiment, the vehicle seat S according to the present invention has been mainly described.
However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the gist of the present invention, and the present invention naturally includes equivalents thereof.
Particularly, the shapes, arrangements, and configurations of the support base 40 and the base cover 60 described in the above embodiment are merely examples, and do not limit the present invention.

S Vehicle seat 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 2 Seat cushion 3 Headrest 4 Rail device 4a Lower rail 4b Upper rail 10 Back frame 11 Connection bracket 12 Seat rotation axis 13 Reclining device 14 Spiral spring 20 Cushion frame 21 Side frame 22 Front connection pipe 23 Central 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 32 Leg connection part 40 Support base 41 Side base part 41a Support wall part 41b Inner wall part 41c Outer wall part 42 First base connection part 43 Second base connection part 44 Reinforcement base part 44a Connection wall part 44b Inner wall part 44c Outside Wall 45 holding member supporting portion 45a bent portion 46 covers the fixed frame 50 leg holding member 51 side wall 52 bottom wall 53 curl portion 54 inertial locking device 60 base cover 61 front cover 62 leg accommodating recesses (recess)
62a longitudinal side wall portion 62b left and right side wall portions 62c bottom wall 63 leg movement limiting portion 64 the base contact portion 65 covers the mounting part 66 reinforcement ribs 67 contact rib 68 front-side connecting portion 68a first front engaging pawl 68b second front engaging Stop claws (front locking claws)
R1 forward Li Bed 69A front side reclining apparatus provided portion 69B front seat belt buckle support member through hole 69C front connecting bracket through hole 69D front side fitting hole 71 rear cover 78 rear-side connecting portion 78a rearward locking claws 171 Rear locking claw hanging piece 172 Rear locking claw pressing piece R2 Rear rib 78b First front locking claw through- hole 78c Second front locking claw through-hole 79A Rear reclining device disposition portion 79B Rear seat belt buckle support member through holes 79C rear side connecting bracket through hole 79D rear side fitting claw H1 reclining device arranging portion H2 seat belt buckle support member through hole H3 connecting bracket through holes

Claims (6)

A seat body having a seat back serving as a backrest portion and a seat cushion connected to the seat back and serving as a seating portion,
A vehicle seat switchable between a use state in which an occupant can sit and a movement state in which the seat body is moved from the use state,
A pair of side base portions provided on the vehicle body floor side,
A seat rotation shaft attached to the side base portion and connected to one end of the seat body in a front-rear direction or a sheet width direction of the seat body so that the seat body can rotate;
A base cover that covers the side base portion,
The base cover is configured to be divided into a front cover and a rear cover in a front-rear direction of the vehicle seat,
The rear end of the front cover and the front end of the rear cover are fixed while sandwiching a cover fixing frame arranged to bridge the pair of side bases. Features vehicle seats. A seat body having a seat back serving as a backrest portion and a seat cushion connected to the seat back and serving as a seating portion,
A vehicle seat switchable between a use state in which an occupant can sit and a movement state in which the seat body is moved from the use state,
A pair of side base portions provided on the vehicle body floor side,
A seat rotation shaft attached to the side base portion and connected to one end of the seat body in a front-rear direction or a sheet width direction of the seat body so that the seat body can rotate;
A base cover that covers the side base portion,
The base cover is configured to be divided into a front cover and a rear cover in a front-rear direction of the vehicle seat,
A rear side end of the front cover and a front side end of the rear cover are fixed while sandwiching a cover fixing frame arranged to bridge the pair of side bases,
The seat rotation shaft is provided on the pair of side base portions,
A vehicle seat, wherein the cover fixing frame is connected to a rear side of the seat rotation shaft. Before SL base cover is a pair of the side base portions, a vehicle according to claim 1 or 2, characterized in that it is arranged so as to cover the drive mechanism located below the side base portion Sheet. The widthwise end portion a rear end portion of the front SL front cover, the conjunction front side fitting portion for fixing the rear cover is formed, the width direction a forward end of the rear cover At the end, a rear side fitting portion for fixing the front cover is formed,
4. The vehicle according to claim 1 , wherein the front side fitting portion and the rear side fitting portion are fitted in a state where the base cover is assembled. 5. Sheet. A seat body having a seat back serving as a backrest portion and a seat cushion connected to the seat back and serving as a seating portion,
A vehicle seat switchable between a use state in which an occupant can sit and a movement state in which the seat body is moved from the use state,
A pair of side base portions provided on the vehicle body floor side,
A seat rotation shaft attached to the side base portion and connected to one end of the seat body in a front-rear direction or a sheet width direction of the seat body so that the seat body is rotatable;
A base cover that covers the side base portion,
The base cover is configured to be divided into a front cover and a rear cover in a front-rear direction of the vehicle seat,
The vehicle seat is provided with a seat belt buckle support member,
The vehicle seat according to claim 1, wherein the front cover and the rear cover are configured to be separated from a fastening position of the seat belt buckle support member in a front-rear direction. A seat body having a seat back serving as a backrest portion and a seat cushion connected to the seat back and serving as a seating portion,
A vehicle seat switchable between a use state in which an occupant can sit and a movement state in which the seat body is moved from the use state,
A pair of side base portions provided on the vehicle body floor side,
A seat rotation shaft attached to the side base portion and connected to one end of the seat body in a front-rear direction or a sheet width direction of the seat body so that the seat body is rotatable;
A base cover that covers the side base portion,
The base cover is configured to be divided into a front cover and a rear cover in a front-rear direction of the vehicle seat,
The rear end of the front cover and the front end of the rear cover are fixed while sandwiching a cover fixing frame disposed so as to bridge the pair of side bases. On the front surface of the front part of the is formed a concave portion recessed from the upper side to the lower side,
The vehicle seat according to claim 1, wherein the cover fixing frame is disposed rearward of the seat with respect to the recess.

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