JP3992897B2 - Underfloor storage seat structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an underfloor storage seat structure in which a seat cushion and a seat back are folded into a predetermined storage form, and the entire seat can be stored in a storage recess under the floor under a predetermined rotation operation.
[0002]
[Prior art]
For example, a seat cushion, a storage seat that can be stored in a predetermined position by folding a seat back, a rear seat such as an RV-based vehicle, a one-box vehicle, or a small multi-purpose vehicle that also serves as a luggage compartment or a passenger compartment, or is shared, It is widely provided mainly as a third row sheet (third sheet). And, for example, a configuration disclosed in Japanese Utility Model Laid-Open No. 07-028728, etc., in which the entire sheet can be stored in the storage concave portion under the floor under its rotation, is known as this type of storage sheet.
[0003]
In the configuration disclosed in Japanese Utility Model Laid-Open No. 07-028728, the lower end of the seat frame on which the seat back and the seat cushion are pivotally attached is connected to the floor surface via a pin (hinge) protruding from the tire house. It can be pivoted, that is, connected and supported so as to be able to fall back from a predetermined standing posture that is the use position. A storage recess for the sheet is formed in the floor space on the side.
[0004]
According to such an underfloor storage sheet, since the sheet can be stored without leaving a protruding portion to the room, the indoor space can be effectively utilized.
[0005]
[Problems to be solved by the invention]
Here, the configuration of the above-mentioned Japanese Utility Model Publication No. 07-028728 is configured so that the entire seat can be stored in the storage recess under the floor under the back of the seat frame centered on the hinge at the lower end. The front and rear width corresponding to the vertical length of the storage form is required for the floor space extending rearward from the hinge. In other words, this known configuration is effective for a large vehicle that can secure a large space behind the seat, but it is difficult to apply to a small vehicle that cannot secure a large space behind the seat, and its adaptability is unavoidable. Absent.
[0006]
Further, in this known configuration, since the pin protruding from the tire house or the like is used as a hinge of the seat frame, even if the seat is stowed, the pin or the bracket on the seat frame side is not attached to the floor surface. Projected and exposed. Therefore, it tends to be accompanied by a decrease in appearance quality during storage.
[0007]
By the way, in this known configuration, the seat back and the seat cushion are pivotally attached to the upper end and the lower end of the seat frame, respectively. Then, the seat back and the seat cushion are arranged on a single plane by folding the seat cushion in the front space of the seat frame formed by the reversal rotation of the seat back upward. Can be formed.
[0008]
However, in this configuration, separate rotation operations for the seat frame, the seat back, and the seat cushion are required both when the seat is stored and when the seat is set, and normally, for these operations, Since stopper locking and unlocking operations are also added, the number of operation processes during storage and setting is large, and it is inevitable that the operability is inferior.
[0009]
An object of the present invention is to provide an underfloor storage seat structure that can be applied to a small vehicle by reducing the rotation space.
[0010]
Another object of the present invention is to provide an underfloor storage seat structure that improves the operability.
[0011]
[Means for Solving the Problems]
In order to achieve this object, according to an embodiment of the present invention, the seat cushion and the seat back can be folded into a predetermined storage form and stored in the storage recess under the floor, and the seat cushion is disposed on the cushion body. The seat back is connected to the seat back so that it can be folded along the seating surface . Then , the base ends of the pair of long and short link arms spaced apart from each other in the front and rear positions of the long link arm with respect to the short link arm are rotated in the front-rear direction with respect to the floor side support portion in the storage recess. Each of the link arms is pivotally attached to the side surface of the seat back under the positional relationship in which the long link arms are arranged on the upper end side of the short link arms.
[0012]
Also, a latch-type locking mechanism that is unitized with a latch is provided at the lower end of the seatback, and a corresponding striker is placed on the floor surface of the locking mechanism as the pair of long and short link arms rotate. Arranged under the base fixed to the side. The seat back can be set and held in a predetermined standing posture under the restriction of rotation by the lock mechanism and the engagement between the link arms , and the seat cushion and the seat back are stored in the storage recess. The back of the seat back is set almost flush with the floor.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
As shown in FIGS. 1 and 2, in the underfloor storage seat structure 10 according to the present invention, the seat back 12 can be rotated with respect to the floor 14 via a pair of long and short link arms 16 and 18 and can be moved up and down. The seat cushion 20 is connected to and supported by the seat back so that the seat cushion 20 can be folded to the seating surface side when the seat cushion 20 is flipped up.
[0015]
As shown by broken lines in FIGS. 1 and 2, in the embodiment of the present invention, the seating surface of the seat back 12 formed with the cushion body is formed in a substantially concave shape, and this substantially concave portion is the seat cushion. Defined as storage space 22 for 20. The seat cushion 20 is located between two specific positions, that is, a drawer position shown in FIG. 1 and a folding storage position shown in FIG. Between the seat back 12 and the seat back 12 so as to be rotatable.
[0016]
According to this configuration, since the seat cushion 20 can be stored in the seat back storage space 22 under the folding by the flip-up, the thickness of the entire seat in the seat storage form is suppressed to about the thickness of the seat back. Is easily possible. Since the size of the planar shape is not different from the shape of the seat back 12, according to this configuration, it is possible to reduce the size in addition to making the seat storage form thinner.
[0017]
In this embodiment, since the seating surface of the seat back 12 is formed as a cushion surface on which the cushion body is disposed, the cushion surface can be secured widely in the vertical direction. That is, according to this configuration, the cushioning property of the seat back 12 can be secured sufficiently high despite having a thin and small storage configuration.
[0018]
The seat cushion 20 has a predetermined locking means (not shown), for example, at the tip (side surface of the free rotation end) or the like, and the seat back storage space 22 under the lock of the locking means. The seat cushion 20 is in a folded state, that is, the seat cushion can be locked and held in the storage position.
[0019]
Here, as shown in FIG. 2, in the present invention, the lying posture of the seat back 12 with the back surface (also referred to as the back of the back) 12 a disposed on the upper surface is stored under the floor with respect to the storage recess 26 formed in the floor surface 14. The seat back is defined as a seat storage posture, and in order to enable such a storage, the seat back is connected to and supported by a pair of long and short link arms 16 and 18 so as to be able to rotate and move up and down. .
[0020]
The back surface 12a of the seat back is formed of a floor surface body equivalent to the floor surface 14. The floor surface can be generally exemplified by a hard board, for example, a hard board covered with a carpet or the like. However, since it is sufficient if the back surface of the seat back 12 can function as a part of the floor surface 14 when lying down, the material and configuration thereof are not limited to this.
[0021]
As shown in FIGS. 1 and 2, the pair of long and short link arms 16, 18 are spaced apart from each other in the front-rear direction under the arrangement of the long link arm 16 with respect to the short link arm 18. The base ends of the pair of long and short link arms 16 and 18 are pivotally attached to the floor side support portion, for example, brackets 28 and 29 fixed in the storage recess 26, respectively, so as to be rotatable in the front-rear direction. At the same time, the free ends of the link arms are pivotally attached to the side surface 12b of the seat back 12 under the positional relationship in which the long link arm 16 is disposed on the upper end side of the short link arm 18.
[0022]
As described above, the seat back 12 is rotated by the pair of long and short link arms 16 and 18 between the lying posture shown in FIG. 2, that is, the retracted posture and the standing posture as the use posture shown in FIG. Supported as possible. The pair of long and short link arms 16 and 18 are engaged with the free end of the short link arm 18 at a specific intermediate position of the long link arm 16 only in the standing posture of the seat back 12, as shown in FIG. It is formed in a shape to obtain. Examples of such a shape in which the free end of the short link arm 18 is engaged with the long link arm 16 include, for example, a step shape of the short link arm.
[0023]
Assume that the storage posture of the storage recess 26 shown in FIG. 2 is the initial state of the underfloor storage sheet. As described above, in the present invention, since the seat back 12 has a seating posture in which the seat back 12 has the back surface 12a as the upper surface, which is the floor surface body, the seat is stored in the storing recess 26. It can function as a part of the floor surface 14 forming the luggage room or as the floor surface itself. When the back surface 12a of the seat back is defined as a part of the floor surface 14, the luggage compartment can be easily expanded by setting the back surface of the seat back substantially flush with the floor surface.
[0024]
Further, in the lying posture (storing posture) of the seat back 12, both the long link arm 16 and the short link arm 18 are in a rearward position substantially parallel to the seat back.
[0025]
In this underfloor storage seat, a concave handle (not shown) is usually formed on the back surface 12a of the seat back, and this concave handle is used when the seat back 12 is pulled up from the storage recess 26, that is, when it stands up. The In the embodiment of the present invention, it is considered preferable to provide a concave handle in the lower half of the seat back 12 from the viewpoint of operability.
[0026]
The seat back 12 pulled up using the concave handle ascends while drawing a movement locus defined by the pair of long and short link arms 16 and 18. That is, as shown in FIG. 3, the seat back 12 pivots in the clockwise direction, that is, in the backward tilting direction with the pivot point on the free end side of the longitudinal link arm 18 as a fulcrum, while pivoting on the brackets 28 and 29 side. Ascending as the link arms 16 and 18 turn counterclockwise about the point. Then, after the neutral position where the free end side pivot point of the pair of long and short link arms 16 and 18 and the bracket 29 side pivot point of the short link arm 18 shown in FIG. The back 12 further rotates in the backward tilting direction with the pivot point of the free end side of the long link arm 16 as a fulcrum while the short link arm 18 rotates counterclockwise.
[0027]
Thereafter, the rotation of each link arm, that is, the movement of the seat back 12 is restricted by the engagement of the free end of the short link arm 18 with the long link arm 16, thereby the seat back standing posture shown in FIG. Is set.
[0028]
Here, in the present invention, a latch-type locking mechanism 34 that is unitized with the latch 32 is provided at the lower end of the seat back 12 in the standing posture, and the pair of long and short link arms 16 and 18 are rotated. Corresponding strikers 36 are arranged on the floor surface side on the movement trajectory of the lock mechanism. The engagement position of the latch 32 with respect to the striker 36, that is, the lock position of the seat back 12 by the lock mechanism 34 is the position at which the rotation of the seat back is restricted by the engagement of the free end of the short link arm 18 with the long link arm 16. Is set as
[0029]
According to this configuration, since the rotation of the seat back 12 is reliably stopped under the lock by the lock mechanism 34, the holding of the seat back 12 in the standing posture is ensured.
[0030]
In the standing posture of the seat back 12, the seat cushion 20 is pulled out from the storage recess 22 of the seat back seating surface with the pivot pin 24 as a fulcrum, and held at the pull-out position shown in FIG. By doing so, the usage form of the underfloor storage sheet is set.
[0031]
Here, as shown in FIG. 1 and FIG. 2, in the embodiment of the present invention, the seat cushion 20 is set at its pull-out position by being placed on, for example, the support step 38 in the storage recess 26, The leg 40 to be held is connected to the back surface of the seat cushion so as to be rotatable, in other words, to be folded and stored on the back surface of the seat cushion. In the present invention, the lower end of the leg 40 is pivotally attached to the other end of the connecting rod 42 pivotally attached at one end to the seat back 12, thereby allowing the leg to rotate the seat cushion 20 relative to the seat back. It is supposed to be linked.
[0032]
In other words, according to this configuration, the leg 40 protrudes from the back of the seat cushion in conjunction with the withdrawal of the seat cushion 20, and the leg is stored in conjunction with the seat cushion being flipped up. , And its storing operation can be simplified. Therefore, the seat cushion 20 can be easily pulled out without increasing the rigidity of the seat back when the seat cushion 20 is pulled out, that is, when the underfloor storage seat is used.
[0033]
Further, in the embodiment of the present invention, the lower end portion of the seat back back surface 12a, that is, the lower end portion 12a-1 of the floor surface body forming the back surface of the seat back is formed as an appropriately separable form without being fixed to the seat back 12. Good. As can be seen from FIG. 1, according to such a configuration, the short link arm 18 in the standing posture of the seat back 12 is covered by the lower end portion 12a-1 of the back of the seat back from the rear along the inclination. For this reason, not only the deterioration of the appearance quality from the rear of the seat can be prevented, but also its safety is reliably improved.
[0034]
In the case where the seat is stored in the storage recess 26 from the configuration in which the seat cushion 20 is pulled out in the standing posture of the seat back 12, that is, from the usage configuration of the underfloor storage seat shown in FIG. You can do the opposite. That is, the seat cushion 20 is stored in the storage recess 22 of the seat back seating surface under the spring-up, and after the lock mechanism 34 is unlocked, the seat back 12 is moved according to the movement trajectory by the pair of long and short link arms 16 and 18. If the body is tilted while being rotated forward, the seat back, that is, the entire sheet is stored in the storage recess 26 again, as shown in FIG.
[0035]
As described above, in the underfloor storage seat structure 10 of the present invention, the seat back 12 is supported by the pair of long and short link arms 16 and 18, and the free end side pivot point of the long link arm 16 is used as a fulcrum. Since the back is turned, the turning radius and the front-rear width of the space required for turning are sufficiently shorter than those using the seat back or the lower end of the seat frame as a fulcrum, and the turning. The space and the position in the standing posture are substantially aligned with the upper space of the storage recess 26.
[0036]
In other words, according to the present invention, it is not necessary to provide the storage recess 26 so as to extend rearward from the standing posture position of the seat back 12, and therefore the space behind the storage recess 26 can be made sufficiently small despite being an underfloor storage seat. In addition, an underfloor storage seat that can be applied to a small vehicle having a small rear space can be easily secured.
[0037]
Further, since the pivot radius and the pivot space of the seat back 12 are small, the front seat, that is, the third seat, does not interfere with the front second seat during the pivot. In other words, when setting the underfloor storage seat to either the stored or used posture, additional work such as temporarily moving the front seat in the direction of escaping from the interference becomes unnecessary, so that the operability and workability are improved. Will definitely improve.
[0038]
Further, according to the present invention, the seat back 12 is rotated with lifting and lowering and the seat cushion 20 is simply rotated in the standing posture in accordance with the movement locus defined by the pair of long and short link arms 16 and 18. Thus, since each of the storage mode and the usage mode can be set, the number of operation steps is surely reduced. Therefore, also from this point, the operability is reliably improved.
[0039]
As shown in FIG. 1, the seat back 12 is held in its standing posture by the engagement of the free end of the short link arm 18 with the long link arm 16. A load from the front (left side in the figure) can be received by the pair of long and short link arms. That is, since the load acting on the seat back 12 can be dispersed without concentrating on the lock mechanism 34, the safety of the lock mechanism and the reliability of the lock can be easily improved without complicating the configuration. .
[0040]
Further, in the embodiment of the invention, the striker 36 is disposed on the movement locus of the seat back 12 defined by the pair of long and short link arms 16 and 18, and consequently the movement locus of the lock mechanism 34. And, in the configuration in which the seat back 12 is supported by the pair of long and short link arms 16 and 18 as in the present invention, the movement trajectory is constant. Will also improve.
[0041]
Furthermore, since it is sufficient to pivotally attach the base ends of the pair of long and short link arms 16 and 18 to the brackets 28 and 29 fixed in the storage recess 26, it is possible to reliably prevent the exposure of the hinge and the like when the seat is stored. Therefore, the appearance quality when the sheet is stored is reliably improved.
[0042]
In the present invention, the seat cushion 20 is foldable with respect to the seat back 12 while being flipped up toward the seating surface. In other words, the cushion body can be disposed on almost the entire seating surface of the seat back 12, so that the seating feeling can be sufficiently high regardless of the underfloor storage seat.
[0043]
Here, in the embodiment of the present invention, a substantially concave storage space 22 is provided on the seating surface side of the seat back 12, and the seat cushion 20 can be folded and stored in this storage space. For example, the seat cushion may be simply overlapped with the seat cushion raised up without providing a substantially concave storage space on the seat back seating surface.
[0044]
However, as in the embodiment of the present invention, if a substantially concave storage space 22 is provided on the seating surface side of the seat back 12, and the seat cushion 20 can be folded and stored in this storage space, the seat storage form The thickness of the entire sheet is reduced to the thickness of the seat back. Since the size of the planar shape is not different from the shape of the seat back 12, it is possible to easily reduce the size of the seat storage form in addition to reducing the configuration thereof without complicating the configuration.
[0045]
Further, in the embodiment of the present invention, the seat cushion 20 is pivotally attached to the seat back 12 via the pivot pin 24, but it is sufficient that the seat cushion is rotatable with respect to the seat back. For example, the seat cushion may be rotatably supported by a hinge having a link arm or the like.
[0046]
The above-described embodiments are for explaining the present invention, and do not limit the present invention. All modifications, alterations, and the like within the technical scope of the present invention are included in the present invention. It goes without saying that it is done.
[0047]
【The invention's effect】
As described above, according to the underfloor storage seat structure according to the present invention, the turning radius and the front-rear width of the space required for turning can be sufficiently reduced, and the turning space and the standing posture can be maintained. The position is approximately aligned with the top space of the storage recess. That is, although it is an underfloor storage seat, the space behind it can be made sufficiently small, so that the application of the underfloor storage seat to a small vehicle or the like with a small rear space can be easily secured according to the present invention.
[0048]
And, since the turning radius of the seat back and the turning space are small, when setting the storage seat under the floor to either the storing or using posture, the front seat is temporarily moved in the direction to escape from the interference, etc. Since no additional work is required, the operability and workability are reliably improved.
[0049]
Furthermore, according to the movement trajectory defined by the pair of long and short link arms, the seat back is turned up and down, and the seat cushion is simply turned in the standing posture. Therefore, the number of operation steps can be surely reduced. Therefore, also from this point, the operability is reliably improved.
[0050]
The seat back is held in an upright posture under the engagement of the free end of the short link arm with respect to the long link arm, and this pair of long and short link arms receives a load from the front. Can be distributed without concentrating on the locking mechanism. Therefore, the safety of the lock mechanism and the certainty of the lock can be easily improved without complicating the configuration.
[0051]
Furthermore, since it is sufficient that the base ends of the pair of long and short link arms are pivotally mounted in the storage recess, exposure of the hinges and the like during sheet storage can be reliably prevented. Therefore, the appearance quality when the sheet is stored is reliably improved.
[0052]
Further, since the seat cushion is foldably connected to the seat back, the cushion body can be disposed on almost the entire seating surface of the seat back. Therefore, the seating feeling can be secured sufficiently high even though it is an underfloor storage seat.
[0053]
And, if the seat cushion can be folded and stored in the storage space of the seat back, the thickness of the entire seat in the seat storage form is sufficiently suppressed, and the size of the planar shape is not different from the shape of the seat back, In addition to making the sheet storage form thinner, it is possible to easily reduce the size without complicating the configuration.
[0054]
Furthermore, in the configuration in which the seat back is supported by the pair of long and short link arms, the movement trajectory is constant. Therefore, by placing the striker on the movement trajectory of the lock mechanism, the locking mechanism can be reliably locked. This also improves.
[0055]
Further, if the leg connected to the back surface of the seat cushion so as to be folded and stowable can be interlocked with the rotation of the seat cushion with respect to the seat back, the operation of pulling out and retracting the seat cushion can be simplified. Accordingly, it is possible to easily secure the seat cushion pull-out position, that is, the rigidity enhancement of the seat back in the usage mode of the underfloor storage seat without complicating the operation.
[0056]
If the lower end of the back of the seat back is configured to be separable without sticking to the seat back, the short link arm in the standing posture of the seat back is aligned with the lower end of the back of the seat back along the inclination. Therefore, not only can the deterioration of the appearance quality from the rear of the seat be prevented, but also its safety is reliably improved.
[Brief description of the drawings]
FIG. 1 is a schematic side view of an underfloor storage seat structure according to the present invention in a use posture (an upright posture of a seat back).
FIG. 2 is a schematic side view of the underfloor retractable seat structure in the retracted posture (seat back lying posture).
FIG. 3 is a schematic side view of the underfloor storage seat structure in the middle of raising the seat back.
FIG. 4 is a schematic side view of the underfloor storage seat structure in the middle of rotating the seat back.
[Explanation of symbols]
10 Underfloor storage seat structure
12 Seat back
14 Floor
16 Long link arm
18 Short link arm
20 Seat cushion
22 Storage space
26 Recessed recess
34 Locking mechanism
36 striker
40 legs

Claims (1)

In the underfloor storage seat in which the seat cushion and the seat back are folded into a predetermined storage form and can be stored in the storage recess under the floor,
The seat cushion is connected to the seat back so that it can be folded along the seating surface where the cushion body is placed
The base ends of a pair of long and short link arms that are spaced apart from each other in the front and rear positions of the long link arm with respect to the short link arm can be rotated in the front-rear direction with respect to the floor side support in the storage recess. Each of the link arms is pivotally attached to the side surface of the seat back under the positional relationship in which the long link arms are arranged on the upper end side of the short link arms.
A latch-type lock mechanism that is unitized with a latch is provided at the lower end of the seatback, and the corresponding striker is moved to the floor surface on the movement trajectory of this lock mechanism as the pair of long and short link arms rotate. Placed under the base of the
The seat back can be set and held in a predetermined standing posture under the rotation restriction by the lock mechanism and the engagement between the link arms , and the seat cushion and the seat back are stored in the storage recess. Underfloor storage seat structure, characterized in that the back of the seat back is set to be almost flush with the floor.

Images