JP7230761B2 - vehicle seat - Google Patents

Description

The present invention comprises a seat cushion comprising: a lower bag member arranged below the seat pad; an upper bag member arranged above the seat pad; and a tubular or linear connecting member connected to the upper bag member. and wherein the connection member is routed from the upper side to the lower side of the seat pad.

In this type of vehicle seat, various bag members are sometimes provided at appropriate positions on the seat cushion that serves as the seat. For example, the seat cushion disclosed in Patent Document 1 has a support plate corresponding to the seat frame of the present invention, a seat pad supported by the support plate, and an airbag device. The airbag device is a hollow member containing an airbag and an inflator, and is arranged under the front portion of the seat pad while being supported by a support plate. Further, the airbag is a member corresponding to the lower bag member of the present invention, and can be inflated by the supply of air from the inflator and deployed from the airbag device toward the rear of the seat. In the known technology, the front side of the seat pad can be lifted by the deployed airbag by inflating and deploying the airbag behind the seat at an appropriate timing.

In the field of vehicle seats, another bag member may be arranged above the seat pad in consideration of the comfort of the passenger. This other bag member corresponds to the upper bag member of the present invention, and is connected to an air tube which corresponds to the connecting member of the present invention. The air tube is a tubular member that allows passage of air, is routed from the upper side to the lower side of the seat pad, and communicates with a pump and a discharge port provided below the seat. Another bag member repeatedly inflates and deflates via the air tube, thereby making it possible to massage the occupant seated on the seat cushion.

Japanese Patent No. 4239387

By the way, in the seat pad provided with the separate bag member described above, the air tube for the separate bag member (connecting member for the upper bag member) is routed from the upper side to the lower side of the seat pad. In such a configuration, the air tube should be routed to the seat cushion while considering the airbag (lower bag member) arranged below the seat pad. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to route the connection member for the upper bag member to the seat cushion while considering the lower bag member. It is in.

As a means for solving the above-mentioned problems, a vehicle seat of the first invention includes a seat cushion, which serves as a seat portion, which includes a seat pad supported by a seat frame, and a seat pad arranged below the seat pad and attached to the seat frame. There is a supported lower bag member and an upper bag member positioned above the seat pad. The lower bag member can be displaced from a contracted state in which it is contracted at the front portion of the seat pad to a deployed state in which it expands toward the rear of the seat. A tubular or linear connecting member connected to the upper bag member is routed from the upper side of the seat pad toward the lower side. In this type of seat construction, the connecting member for the upper bag member should be routed to the seat cushion while taking into account the lower bag member.

Therefore, in the present invention, a hole is provided that vertically penetrates the seat pad, and at least a part of the hole is positioned so as to avoid the inflatable region of the lower bag member when viewed from the top of the seat pad. It is a formed avoidance part. The connection member is routed from the upper side to the lower side of the seat pad while being inserted through the avoidance portion. In the present invention, the avoiding portion is provided in the hole extending vertically through the seat pad so as to avoid the inflatable region of the lower bag member. By arranging the connecting member from the upper side to the lower side of the seat pad while it is inserted through the avoiding portion, it is possible to arrange the connecting member as far away from the inflating lower bag member as possible.

A vehicle seat according to a second aspect of the invention is the vehicle seat according to the first aspect of the invention, wherein the connection member is arranged from the upper side to the lower side of the seat pad outside the lower bag member in the unfolded state. In the present invention, the connecting member that is routed from the upper side to the lower side of the seat pad is arranged outside the lower bag member in the unfolded state. etc. can be avoided more reliably.

A vehicle seat of a third invention is the vehicle seat of the first invention or the second invention, wherein the seat cushion comprises a plurality of upper bag members for massage and connecting members corresponding in number to the number of upper bag members provided. and Each of the plurality of upper bag members can be inflated and contracted via a corresponding connecting member, and each connecting member is inserted and wired through a corresponding hole. The seat pad of the present invention is provided with a plurality of upper bag members and connecting members for massage from the viewpoint of improving seat performance. Even in such a case, by inserting each connection member through the corresponding hole, it is possible to route the connection members as far away from the lower bag member as possible when inflated.

According to the first aspect of the present invention, the connection member for the upper bag member can be routed to the seat cushion while considering the lower bag member. Moreover, according to the second invention, the connection member for the upper bag member can be reliably routed at a desired position of the seat cushion. According to the third invention, the plurality of connection members for the upper bag member can be routed to the seat cushion with good performance while considering the lower bag member.

1 is a see-through perspective view of a vehicle seat; FIG. It is a see-through top view of the seat cushion. FIG. 3 is a schematic cross-sectional view corresponding to a cross section taken along line III-III of FIG. 2; It is an exploded perspective view of a seat cushion. FIG. 4 is a see-through top view of the seat pad showing the lower bag member in an unfolded state; FIG. 4 is an enlarged top view of the seat pad showing the avoidance portion of the hole; FIG. 4 is a top view of a seat pad with upper bag members arranged thereon; FIG. 8 is a schematic cross-sectional view corresponding to the VIII-VIII line cross section of FIG. 7; FIG. 8 is a schematic cross-sectional view corresponding to the IX-IX line cross section of FIG. 7; FIG. 8 is a schematic cross-sectional view corresponding to the XX line cross section of FIG. 7; 11 is a schematic sectional view showing an enlarged part of the seat pad shown in FIG. 10; FIG.

A mode for carrying out the present invention will be described below with reference to FIGS. 1 to 11. FIG. For the sake of convenience, arrows indicating the front-back direction, the left-right direction, and the up-down direction of the vehicle seat are appropriately illustrated in each drawing. 3 and 8 to 11 show only the main structure of the seat cushion for the sake of convenience.

A vehicle seat 2 shown in FIG. 1 is an interior component installed on a floor surface FS in a vehicle compartment, and includes a seat cushion 4 , a seat back 6 and a headrest 8 . Here, the seat cushion 4 (details will be described later) is slidably disposed on the floor surface FS in the vehicle compartment via slide rails 9 attached to the left and right sides of the lower portion of the seat cushion 4 . A lower portion of a seat back 6 is connected to the rear portion of the seat cushion 4 so that it can be raised and lowered, and a headrest 8 is arranged above the seat back 6 in the upright state.

[Seat cushion]
The seat cushion 4 shown in FIGS. 1 to 4 is a substantially rectangular member that serves as a seat when viewed from above, and is formed by covering a seat pad 4P on a seat frame 4F with a seat cover 4S. The seat cover 4S is a surface material that gives the appearance of the seat, and can be made of, for example, fabric (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather). Further, under the seat cover 4S, a mat member 4SS made of foamed resin is arranged in consideration of seating comfort.

In the seat cushion 4, from the viewpoint of ensuring excellent seat performance, etc., as shown in FIGS. 66 are provided. That is, a lower bag member 21 is provided on the front lower side of the seat pad 4P, and the lower bag member 21 can be deployed while being inflated toward the rear of the seat as will be described later. A plurality of upper bag members 51 to 54 are arranged above the seat pad 4P, and connection members 61 to 66 connected to the upper bag members 51 to 54 extend from the upper side to the lower side of the seat pad 4P. routed towards. The upper bag members 51 to 54 are inflated and contracted via the corresponding connecting members 61 to 66, thereby massaging the occupant seated on the seat cushion 4. As shown in FIG. In this type of configuration, each connection member 61-66 for the upper bag member should be routed to the seat cushion 4 while taking into account the lower bag member 21. FIG. Therefore, in the present embodiment, the connection members 61 to 66 for the upper bag member are routed to the seat cushion 4 while taking the lower bag member 21 into consideration, by means of a configuration described later. Each configuration will be described in detail below.

[Seat frame]
A seat frame 4F shown in FIG. 4 is a substantially rectangular frame body that forms a seat frame when viewed from above, and can be made of a material having excellent rigidity such as metal or hard resin. The outer shape of the seat frame 4F is formed by assembling a front frame 10, a pair of side frames 11, and a rear frame 12 into a substantially rectangular shape (in FIG. 11). The pair of left and right side frames 11 are plate-like members forming side skeletons, and are arranged separately on the left side and the right side of the seat. A front frame 10 (details will be described later) is fixed to the front end sides of both side frames 11 to form a front skeleton. A pipe-shaped rear frame 12 forming a rear frame is stretched over and fixed to the rear end sides of both side frames 11 . A reinforcing frame 13 having a shape is spanned and fixed. An S spring 14 is provided between the reinforcing frame 13 and the rear frame 12, and the S spring 14 can elastically support the seat pad 4P.

The front frame 10 shown in FIGS. 3 and 4 is a plate-like portion having an L-shaped cross section that is elongated in the left and right direction. and a front side plate portion 10b extending downward from the front end. Below the front frame 10, an intake/exhaust device 15 for the upper bag member and a blower device 16 are arranged. The intake/exhaust device 15 is a cubic member that supplies and discharges fluid to and from upper bag members 51 to 54, which will be described later, and is arranged on the front right side of the seat frame 4F. The intake/exhaust device 15 is provided with a fluid supply pump (not shown) and a fluid discharge port, which communicates with the upper bag members 51 to 54 via connection members 61 to 66, which will be described later. there is The blower 16 is a drum-shaped member having a blower mechanism installed therein, and can blow gas toward the seating surface of the seat pad 4P. The air blower 16 is disposed in the center of the front portion of the seat frame 4F and communicates with the passage portion 35 of the seat pad 4P shown in FIG. 3, which will be described later.

3 and 4, on the upper plate portion 10a of the front frame 10, a columnar bag device 20 elongated in the left-right direction is arranged. A lower bag member 21 and an inflator 22 are disposed within the bag device 20, and the rear surface of the bag device 20 can be released when the lower bag member 21 is deployed as described later. A rectangular supporting surface member 23 is attached to the lower surface of the bag device 20 when viewed from above. The support surface member 23 is a member for supporting the lower bag member 21 when deployed, and extends from the bag device 20 toward the rear of the seat and is supported by the front frame 10 and the S spring 14 . . Although the material of the support surface member 23 is not particularly limited, it is desirable to have appropriate rigidity and flexibility, and it is possible to use the materials exemplified for the seat cover 4S and resin sheet materials.

[Lower bag member]
3 and 4, the lower bag member 21 is a bag-like member that is inflated by the inflow of fluid such as air, and is arranged in the bag device 20 in a deflated state. As shown in FIG. 5, the lower bag member 21 can be displaced to a deployed state by inflating toward the rear of the seat (the inflatable region of the lower bag member 21 will be described later). Here, the lower bag member 21 is formed by crimping or adhering two sheets of face material on the peripheral side, and has a bag-like bag main body 21a capable of holding fluid, and a peripheral edge of the bag main body 21a. and a sealing portion 21b. In this embodiment, the bag main body 21a of the lower bag member 21 receives the supply of fluid from the inflator 22 at an appropriate timing, so that it can be inflated and deployed toward the rear of the seat.

[Seat pad]
The seat pad 4P shown in FIGS. 4 and 5 is a generally rectangular member that forms the contour of the seat when viewed from above, and can be made of foamed resin such as polyurethane foam (density: 10 kg/m ³ to 60 kg/m ³ ). The seating surface, which is the upper surface of the seat pad 4P, can be divided into a top plate main portion 4a, a pair of left and right top plate side portions 4b and 4c, and a rear bank portion 4d. 34 are provided. Here, the top plate main portion 4a is the central portion of the seat cushion 4 in the seat width direction, and extends in the front-rear direction with an appropriate dimension in the seat width direction. On the right side of the top plate main portion 4a is formed a right top plate side portion 4b that protrudes upward, and on the left side is formed a left top plate side portion 4c that protrudes upward. A bank portion 4d protruding upward is formed. The top plate side portions 4b and 4c and the bank portion 4d form a series so as to surround the top plate main portion 4a except for the front side.

The seat pad 4P shown in FIG. 5 is provided with a pair of left and right vertical grooves (right vertical groove 31, left vertical groove 32) and a pair of front and rear horizontal grooves (front horizontal groove 33, rear horizontal groove 34). . Each of these grooves 31 to 34 is a recessed portion extending in a predetermined direction with an appropriate dimension, and can be arranged by retracting a part of the seat cover, for example. The vertical grooves 31 and 32 are grooves extending linearly in the front-rear direction, and are formed generally bilaterally symmetrically in the top plate main portion 4a. The right longitudinal groove portion 31 extends longitudinally between the top plate main portion 4a and the right top plate side portion 4b, and the left longitudinal groove portion 32 extends longitudinally between the top plate main portion 4a and the left top plate side portion 4c. extended. The rear sides of the right vertical groove portion 31 and the left vertical groove portion 32 are formed so as to protrude from the top plate main portion 4a toward the bank portion 4d. The horizontal grooves 33 and 34 are grooves extending in the horizontal direction in the top plate main portion 4a, and the left and right ends of the horizontal grooves 33 and 34 communicate with the corresponding vertical grooves 31 and 32, respectively. The front lateral groove portion 33 extends left and right approximately in the center of the top plate main portion 4a in the front-rear direction. The rear lateral groove portion 34 extends in the left-right direction between the top plate main portion 4a and the bank portion 4d.

Further, referring to FIGS. 3 and 5, the seat pad 4P is provided with a passage portion 35 penetrating vertically through the seat pad 4P and a plurality of openings 36 and 37 as a configuration for an air blower. The passage portion 35 is a passage that allows gas to pass therethrough, and a lower opening (reference numerals omitted) communicates with the blower device 16 via a duct member (not shown). The upper side of the passage portion 35 is branched in the front, rear, left, and right directions, and a plurality of openings 36 and 37 serving as upper openings of the passage portion 35 are formed in the top plate main portion 4a. That is, a plurality of front end openings 36 are formed in a row on the left and right at the front end of the top plate main portion 4a (in FIG. 5 and the like, for convenience, the front end openings are given a common reference numeral 36). . A plurality of central openings 37 are formed behind the opening 36 at the front end (in FIG. 5 and the like, the central openings are denoted by the same reference numeral 37 for convenience). These central openings 37 are arranged in a generally U-shaped row at the center of the top plate main portion 4a in the left-right direction.

Further, referring to FIGS. 5 and 7, the top plate main portion 4a of the seat pad 4P has a plurality of accommodation portions 41 to 44 and a plurality of holes (to be described later) as a configuration for the upper bag members 51 to 54 (to be described later). Sections 41H to 46H are provided. Each of the housing portions 41 to 44 is a step-like concave portion provided in the top plate main portion 4a, and is one step lower than the surrounding top plate main portion 4a. Four housing portions (first housing portion 41, second housing portion 42, third housing portion 42, and third housing portion 41) are provided at appropriate positions of the top plate main portion 4a according to the number of upper bag members arranged, as will be described later. 43, a fourth receiving portion 44) is provided.

A first housing portion 41 and a second housing portion 42 shown in FIG. 5 are recessed portions that are generally rectangular when viewed from above. It is The first accommodation portion 41 is a concave portion provided on the front right side of the top plate main portion 4 a and is formed to the right of the central opening 37 and close to the right vertical groove portion 31 . The second accommodation portion 42 is a concave portion provided on the front left side of the top plate main portion 4 a and is formed to the left of the central opening 37 and close to the left vertical groove portion 32 . The third accommodation portion 43 and the fourth accommodation portion 44 are provided on the rear side of the front lateral groove portion 33 so as to be separated from the right side and the left side of the top plate main portion 4a. The third housing portion 43 and the fourth housing portion 44 are substantially rectangular recesses when viewed from above, and are larger in front-rear dimension than the first housing portion 41 and the second housing portion 42 . The third accommodation portion 43 is a concave portion provided on the rear right side of the top plate main portion 4 a and is formed adjacent to the right vertical groove portion 31 . The fourth accommodation portion 44 is a concave portion provided on the rear left side of the top plate main portion 4 a and is formed adjacent to the left vertical groove portion 32 .

[Hole]
5 and 7, the plurality of holes 41H to 46H are through-holes that vertically penetrate the top plate main portion 4a, respectively, through which the corresponding connection members 61 to 66 (described later in detail) are inserted. can be kept A first hole portion 41H and a second hole portion 42H are provided on the front side of the front lateral groove portion 33 of the top plate main portion 4a shown in FIG. The first hole portion 41H and the second hole portion 42H have generally symmetrical shapes when viewed from the top of the seat pad 4P, and are provided separately on the left end side and the right end side of the top plate main portion 4a. there is

That is, the first hole portion 41</b>H shown in FIGS. 5 and 6 is an elongated through hole extending from the first housing portion 41 toward the right vertical groove portion 31 . The first hole portion 41H gradually inclines rearward toward the right side as viewed from above, and a first avoidance portion 41HH, which will be described later, is provided on the right side of the first hole portion 41H. The left end of the first hole portion 41H is formed to overlap the right rear corner portion of the first housing portion 41, and the right end of the first hole portion 41H is formed adjacent to the left side of the right vertical groove portion 31. ing. A second hole portion 42</b>H shown in FIG. 5 is an elongated through hole extending from the second housing portion 42 toward the left vertical groove portion 32 . The second hole portion 42H is gradually inclined rearward toward the left, and a second avoidance portion 42HH, which will be described later, is provided on the left side of the second hole portion 42H. The right end of the second hole portion 42H is formed to overlap the left rear corner portion of the second housing portion 42, and the left end of the second hole portion 42H is formed adjacent to the right side of the left vertical groove portion 32. ing.

5, a pair of front and rear third holes (a front third hole 43H and a rear third hole 44H) and a pair of front and rear (45H on the front side, fourth hole 46H on the rear side) are provided. Each of the third holes 43H (44H) and each of the fourth holes 45H (46H) has a generally bilaterally symmetrical shape when viewed from the top of the seat pad 4P, and is located on the left end side and the right end side of the top plate main portion 4a. It is divided into

That is, the third hole portion 43H on the front side shown in FIG. The third hole portion 44</b>H is an elongated through hole that extends substantially linearly from the rear side of the right edge of the third housing portion 43 toward the right vertical groove portion 31 . The left ends of the third holes 43H and 44H are formed overlapping the right edge side of the third housing portion 43, and the right ends of the third holes 43H and 44H are adjacent to the left side of the right vertical groove portion 31. It is formed by The fourth hole portion 45H on the front side is an elongated through-hole extending generally linearly from the rear side of the left edge of the fourth housing portion 44 toward the left vertical groove portion 32. The portion 46</b>H is an elongated through-hole extending generally linearly from the rear side of the left edge of the fourth housing portion 44 toward the left vertical groove portion 32 . The right ends of the fourth holes 45H and 46H are formed overlapping the left edge side of the fourth housing portion 44, and the left ends of the fourth holes 45H and 46H are adjacent to the right side of the left vertical groove portion 32. It is formed by

[Positional relationship between inflatable region (inflatable region) of lower bag member and each hole]
Here, in the unfolded lower bag member 21 shown in FIG. 5, the bag body 21a is inflated from the bag device 20 toward the rear of the seat and unfolded. The unfolded bag body 21a has a substantially semi-elliptical shape when viewed from the top of the seat pad 4P, and has a lateral width slightly smaller than that of the top plate main portion 4a. It is developed up to an intermediate position between the portion 33 and the rear lateral groove portion 34 . Therefore, in this embodiment, the bag body 21a inflated into a semi-elliptical shape is defined as an inflatable region (expansion region EF) of the lower bag member 21, and is surrounded by the right edge EF1 and the left edge EF2 of the bag body 21a. Let us consider the outside of the bent portion to be the outside of the expansion region EF. The right edge EF1 of the inflated area EF (the inflated bag body 21a) has a slight gap with the right longitudinal groove 31, and gradually curves leftward toward the rear. The left edge EF2 of the inflated area EF (the inflated bag body 21a) has a slight gap with the left vertical groove 32, and gradually curves to the right as it goes rearward.

In this embodiment, part or all of the holes 41H to 46H shown in FIG. 5 are formed at positions avoiding the expansion region EF of the lower bag member 21 when the seat pad 4P is viewed from above. For example, the first hole portion 41H shown in FIGS. 5 and 6 extends to the right rear side from the first housing portion 41 so as to be separated from the expansion region EF, so that the right side of the first hole portion 41H is the expansion region. The first avoidance portion 41HH is formed so as to avoid the EF (in FIG. 6, the first avoidance portion is hatched for convenience). The first avoidance portion 41HH is arranged on the right outside of the expansion area EF, and the right end side of the first avoidance portion 41HH is arranged on the right outside of the seal portion 21b of the lower bag member 21 in the unfolded state. state. In addition, the second hole portion 42H shown in FIG. 5 extends to the left rear side from the second housing portion 42 so as to separate from the expansion area EF, so that the left side of the second hole portion 42H avoids the expansion area EF. The second avoidance portion 42HH is formed as follows. The second avoidance portion 42HH is arranged on the left outer side of the expansion area EF, and the left end side of the second avoidance portion 42HH is arranged on the left outer side of the seal portion 21b of the lower bag member 21 in the unfolded state. state.

5, the lower left part is formed so as to overlap the expansion area EF, and the other part (for example, the right edge side) is formed outside the expansion area EF. Therefore, by extending the third hole portions 43H and 44H leftward from the right edge side of the third housing portion 43, the outer side of the right edge EF1 (the right rear side in FIG. 5) so as not to overlap the expansion region EF. can be formed in That is, all of the third holes 43H and 44H of this embodiment are avoidance portions. The fourth housing portion 44 is formed so that its lower right portion overlaps the expansion area EF, and the other portion (for example, the left edge side) is formed outside the expansion area EF. Therefore, by extending the respective fourth holes 45H and 46H leftward from the left edge side of the fourth housing portion 44, the outer side of the left edge EF2 (left rear side in FIG. 5) so as not to overlap the expansion region EF. can be formed in That is, all of the fourth hole portions 45H and 46H of the present embodiment are avoidance portions.

[Upper bag member]
5 and 7, four upper bag members (a first upper bag member 51, a second upper bag member 52, a third upper bag member 53, a fourth upper bag member 53, and a fourth upper bag member) are provided on the top plate main portion 4a. A bag member 54) may be provided. Each of these upper bag members 51 to 54 is a member that is inflated by the inflow of fluid such as air, and has substantially the same basic configuration except for the different arrangement positions and dimensions. For example, the first upper bag member 51 is, as shown in FIG. The first upper bag member 51 is formed by crimping or bonding two sheets of face material on the peripheral surface side. The first upper bag member 51 has a peripheral seal portion 51a and a bag-like portion 51b provided inside the seal portion 51a. It will shrink by ejection. Further, through holes H for arrangement can be provided at appropriate positions of the first upper bag member 51 (in FIG. 7, some of the through holes are denoted by H, and (illustrated by round holes). For example, in the first upper bag member 51, the four corners of the bag-like portion 51b are provided with through-holes H for installation, and the belt portion 51c extending forward from the right side of the front edge is also provided with through-holes H for installation. is provided.

A second upper bag member 52 shown in FIG. 7 is a rectangular bag member like the first upper bag member 51 and has external dimensions that allow it to be accommodated in the second accommodation portion 42 . The second upper bag member 52 has substantially the same basic configuration as the first upper bag member 51 except that it is bilaterally symmetrical. That is, the second upper bag member 52 also has another sealing portion 52a, another bag-like portion 52b, and another belt portion 52c extending forward from the left side of the front edge, and further has a through hole H for arrangement. is placed at an appropriate position.

A third upper bag member 53 shown in FIG. 7 is a rectangular bag member having a front-rear dimension larger than that of the first upper bag member 51 , and has outer dimensions that can be accommodated in the third accommodation portion 43 . The third upper bag member 53 has a peripheral outer seal portion 53a and a pair of front and rear bag-shaped portions 53bb and 53b. That is, the third upper bag member 53 is formed with a central seal portion 53aa so as to be divided into two front and rear portions. They are formed side by side. In addition, a through hole H for arrangement can be provided at an appropriate position of the third upper bag member 53 (in FIG. (illustrated by round holes). For example, in the third upper bag member 53, the four corners of the bag-shaped portion 51b are provided with through-holes H, and the front and rear belt portions 53cc and 53c extending from the front and rear edges of the bag-shaped portion 51b are also provided with through-holes H for installation. is provided.

A fourth upper bag member 54 shown in FIG. 7 is a rectangular bag member similar to the third upper bag member 53 and has external dimensions that can be accommodated in the fourth accommodation portion 44 . The fourth upper bag member 54 has substantially the same basic configuration as the third upper bag member 53 except that it is bilaterally symmetrical. That is, the fourth upper bag member 54 also has another peripheral seal portion 54a, another central seal portion 54aa, different front and rear bag-like portions 54bb and 54b, and different front and rear band portions 54cc and 54c, Further, through holes H for arrangement are provided at appropriate positions.

[Connection member]
A plurality of connection members 61 to 66 are arranged in the top plate main portion 4a shown in FIG. 7 in accordance with the number of the upper bag members 51 to 54 arranged. Each of the upper bag members 51 to 54 is connected to a corresponding plurality of or a single connecting member 61 to 66, so that the connecting members 61 to 66 allow fluid to flow in and out. That is, a first connection member 61 is connected to the first upper bag member 51 and a second connection member 62 is connected to the second upper bag member 52 . The first connecting member 61 and the second connecting member 62 are tubular members that allow passage of fluid such as air, and have substantially the same basic configuration except that the wiring positions are bilaterally symmetrical. A pair of front and rear third connection members 63 and 64 are connected to the third upper bag member 53 , and a pair of front and rear fourth connection members 65 and 66 are connected to the fourth upper bag member 54 . Each of the third connection members 63 (64) and each of the fourth connection members 65 (66) is also a tubular member that allows passage of fluid such as air, and is generally the same except that the wiring position is left-right symmetrical. It has a basic configuration. Therefore, the details of the first connection member 61 and the respective third connection members 63 and 64 will be described below as an example.

The first connecting member 61 shown in FIGS. 7 to 9 has a first tube portion 61a made of resin and a first tube portion 61b having moderate flexibility. The first pipe portion 61a is a linear tubular member, which is connected to the right rear corner of the first upper bag member 51 and communicates with the bag-like portion 51b. The first pipe portion 61a has substantially the same length dimension as the first hole portion 41H in a top view of the seat pad 4P, and is inclined from the first upper bag member 51 toward the right rear side. are arranged as follows. The first tube portion 61b is a tubular member connected to the lower right end of the first tube portion 61a, and has a length dimension that allows routing from the upper side to the lower side of the seat pad 4P.

The second connecting member 62 shown in FIGS. 7 and 8 is also connected to the second pipe portion 62a connected to the left rear corner of the second upper bag member 52 and to the lower left end of the second pipe portion 62a. and a second tube portion 62b. The second pipe portion 62a has substantially the same length dimension as the second hole portion 42H in a top view of the seat pad 4P, and is inclined from the second upper bag member 52 toward the rear left side. are placed. The second tube portion 62b is a tube-shaped member connected to the lower left end of the second tube portion 62a, and has a length dimension that allows routing from the upper side to the lower side of the seat pad 4P.

A pair of front and rear third connecting members 63 and 64 shown in FIG. 7 have generally the same basic configuration except for their arrangement positions, and are connected to the third upper bag member 53 . For example, the front third connecting member 63 shown in FIGS. 10 and 11 has a resin front third tube portion 63a and a moderately flexible front third tube portion 63b. The front third pipe portion 63a is a linear tubular member, which is connected to the front right edge of the third upper bag member 53 and communicates with the front bag-shaped portion 53bb. The front third pipe portion 63a has substantially the same length dimension as the front third hole portion 43H in a top view of the seat pad 4P, and faces rightward from the third upper bag member 53. are placed. The front third tube portion 63b is a tubular member connected to the lower right end of the front third tube portion 63a, and has a length dimension that allows routing from the upper side to the lower side of the seat pad 4P. are doing. The rear third connecting member 64 shown in FIG. 7 also includes a rear third pipe portion 64a connected to the rear right edge of the third upper bag member 53, and a lower left end portion of the rear third pipe portion 64a. and a rear third tube section 64b connected to the . The third pipe portion 64a on the rear side is connected to the rear right edge of the third upper bag member 53 and communicates with the bag-like portion 53b on the rear side. The rear third tube portion 64b is connected to the lower right end of the rear third tube portion 64a and has a length dimension that allows routing from the upper side to the lower side of the seat pad 4P. .

The pair of front and rear fourth connection members 65 (66) shown in FIG. 7 has the same configuration as the pair of front and rear third connection members 63 (64). That is, the front fourth connecting member 65 shown in FIG. 10 is connected to the front fourth pipe portion 65a connected to the front left edge of the fourth upper bag member 54 and to the lower left end of the front fourth pipe portion 65a. and a front fourth tube portion 65b. The front fourth tube portion 65a and the front fourth tube portion 65b are arranged substantially bilaterally symmetrical with the corresponding portions (63a, 63b) of the front third connection member 63. As shown in FIG. The rear fourth connecting member 66 shown in FIG. 7 includes a rear fourth pipe portion 66a connected to the rear left edge of the fourth upper bag member 54, and a lower left end portion of the rear fourth pipe portion 66a. and a rear fourth tube section 66b connected to the . The rear fourth tube portion 66a and the rear fourth tube portion 66b are arranged substantially bilaterally symmetrical with the corresponding portions (64a, 64b) of the rear third connection member 64. As shown in FIG.

[Installation work of each upper bag member and wiring work of each connection member]
3 and 4, in forming the seat cushion 4, the seat pad 4P is arranged on the seat frame 4F and then covered with the seat cover 4S. At this time, referring to FIGS. 5 and 7, the upper bag members 51 to 54 are arranged in the corresponding housing portions 41 to 44 and arranged above the seat pad 4P. For example, the first upper bag member 51 is placed in the first housing portion 41 on the front right side of the top plate main portion 4a, and then positioned by screws (not shown) inserted into the through holes H for installation. Fixed. Then, as shown in FIGS. 8 and 9, the first connection member 61 is routed from the upper side to the lower side of the seat pad 4P through the first hole portion 41H. At this time, the first pipe portion 61a is arranged so as to be fitted into the first hole portion 41H, and the right end of the first pipe portion 61a is arranged on the right end side of the first hole portion 41H serving as the first avoidance portion 41HH. be. The first tube portion 61b is inserted from the lower right end of the first tube portion 61a to the right end side of the first avoidance portion 41HH, and is routed from the upper side to the lower side of the seat pad 4P. The lower side of the first tube portion 61b can be pulled leftward from the lower side of the seat frame 4F and then connected to the intake/exhaust device 15 directly or via another tube portion (not shown). can.

The second upper bag member 52 shown in FIGS. 7 and 8 is arranged in the second housing portion 42 on the left front portion of the top plate main portion 4a, and then inserted into the through hole H for arrangement. The position is fixed with screws (not shown). Then, the second connecting member 62 is wired from the upper side to the lower side of the seat pad 4P through the second hole portion 42H and connected to the intake and exhaust device 15 in the same procedure as the first connecting member 61 . At this time, the second tube portion 62b is inserted from the lower left end of the second tube portion 62a to the left end side of the second avoidance portion 42HH and routed from the upper side to the lower side of the seat pad 4P.

The third upper bag member 53 shown in FIGS. 7, 10 and 11 is arranged in the third accommodation portion 43 on the rear right side of the top plate main portion 4a and then inserted into the through hole H for arrangement. The position is fixed with screws (not shown). Then, each third connection member 63 (64) is routed from the upper side to the lower side of the seat pad 4P through the corresponding third holes 43H (44H). At this time, in the front third connecting member 63 shown in FIGS. 10 and 11, the front third pipe portion 63a is arranged so as to be fitted into the front third hole portion 43H. is arranged on the right end side of the third hole portion 43H on the front side. The front third tube portion 63b is inserted from the lower right end of the front third tube portion 63a to the right end side of the front third hole portion 43H, and is routed from the upper side to the lower side of the seat pad 4P. The lower side of the third tube portion 63b on the front side is also drawn leftward from the lower side of the seat frame 4F, and then connected to the intake/exhaust device 15 directly or via another tube portion (not shown). be able to. Also in the rear third connection member 64 shown in FIG. 7, the rear third pipe portion 64a is arranged so as to be fitted into the rear third hole portion 44H. The rear third tube portion 64b is inserted from the lower right end of the rear third tube portion 64a to the right end side of the rear third hole portion 44H, thereby distributing from the upper side to the lower side of the seat pad 4P. searched.

The fourth upper bag member 54 shown in FIG. 7 is arranged in the fourth accommodation portion 44 on the rear left side of the top plate main portion 4a, and then screws (not shown) are inserted into the through holes H for installation. ). Each fourth connection member 65 (66) is connected from the upper side to the bottom of the seat pad 4P through the corresponding fourth hole portion 45H (46H) in the same procedure as the corresponding third connection member 63 (64). It is wired on the side and connected to the intake/exhaust device 15 .

[Operation of lower bag member]
In the seat cushion 4, referring to FIGS. 3 and 5, the lower bag member 21 (bag main body 21a) can be displaced from the contracted state to the expanded state at an appropriate timing. For example, at the time of a vehicle collision, the inflator 22 inside the bag device 20 is activated by a signal transmitted from a control unit (not shown). Next, the bag main body 21a of the lower bag member 21 is inflated by the inflow of the fluid from the inflator 22, jumps out from the rear surface of the bag device 20, and deploys toward the rear of the seat. By lifting the front portion of the top plate main portion 4a upward by the bag main body 21a of the lower bag member 21 in the unfolded state, it is possible to prevent the occupant from slipping forward as much as possible. The seat cushion 4 is constructed so as to ensure the expandability of the lower bag member 21. For example, the connection members 61 to 66 for the upper bag member are arranged in consideration of the lower bag member 21 as will be described later. It is wired to the seat cushion 4.

That is, in this embodiment, at least some of the holes 41H to 46H vertically penetrating the seat pad 4P are avoided portions (41HH, 42HH, etc.) formed to avoid the expansion region EF as shown in FIG. It has become. The connection members 61 to 66 shown in FIG. 7 are routed from the upper side to the lower side of the seat pad 4P while being inserted through the avoidance portions of the holes 41H to 46H. In this way, in this embodiment, the connecting members 61 to 66 are connected from the upper side to the lower side of the seat pad 4P while considering the lower bag member 21 by using the avoidance portions (41HH, 42HH, etc.) of the holes 41H to 46H. It is supposed to be routed toward the side. The wiring paths of the first connection member 61 and the second connection member 62 are generally the same except for the bilateral symmetry, and each third connection member 63 (64) and each fourth connection member 65 (66) are almost the same except that they are bilaterally symmetrical. Therefore, hereinafter, these wiring routes will be described in detail, taking the first connecting member 61 and the third connecting member 63 on the front side as an example.

In the first connection member 61 shown in FIGS. 7 to 9, the wiring route of the first tube portion 61a and the first tube portion 61b is determined by the first hole portion 41H. The first pipe portion 61a extends from the right rear corner of the first upper bag member 51 toward the right rear side along the first hole 41H so as to avoid the expansion region EF of the lower bag member 21. are doing. In addition, the right end side of the first pipe portion 61a is arranged immediately above the right end of the first avoidance portion 41HH, so that it is arranged on the right outer side of the expansion area EF, and further on the right outer side of the seal portion 21b when deployed. located in The first tube portion 61b is inserted from the lower right end of the first tube portion 61a to the right end of the first avoidance portion 41HH and extends below the seat pad 4P. Therefore, the first tube portion 61b is routed from the upper side to the lower side of the seat pad 4P outside the expansion region EF and the right sealing portion 21b (outside the lower bag member 21). The lower side of the first tube portion 61b is drawn leftward from the lower side of the seat frame 4F and connected to the intake and exhaust device 15. As shown in FIG. In this way, the first connection member 61 is routed so as to avoid the inflation region EF by using the first avoidance portion 41HH of the first hole portion 41H, so that it is routed as far away from the lower bag member 21 as possible when inflated. It is possible to keep In particular, the first tube portion 61b is routed vertically outside the deployed lower bag member 21. As shown in FIG. Therefore, it is possible to more reliably avoid a situation in which the first tube portion 61b unintentionally approaches the sealing portion 21b of the lower bag member 21 during deployment.

Further, in the second connection member 62 shown in FIGS. 7 and 8, the wiring route of the second pipe portion 62a and the second tube portion 62b is defined by the second hole portion 42H. In the second connection member 62, the left end side of the second pipe portion 62a is arranged directly above the left end of the second avoidance portion 42HH, so that it is arranged outside the expansion area EF on the left side, and furthermore, the seal when deployed It is located on the left side of the site (not shown). The second tube portion 62b is inserted from the lower left end of the second tube portion 62a to the right end of the second avoidance portion 42HH and extends below the seat pad 4P. Therefore, since the second connection member 62 is also routed so as to avoid the inflation area EF using the second avoidance portion 42HH of the second hole portion 42H, it is disposed as far away from the lower bag member 21 as possible when inflated. It is possible to search.

In the front third connecting member 63 shown in FIGS. 7, 10 and 11, the wiring route of the front third tube portion 63a and the front third tube portion 63b is determined by the front third hole 43H. ing. The front third pipe portion 63a is directed rightward along the front third hole 43H from the front right edge of the third upper bag member 53 so as to avoid the expansion region EF of the lower bag member 21. are extended. The right end side of the front third tube portion 63a is arranged on the right rear side of the right edge EF1 of the expansion region EF, and is further positioned on the right rear side of the seal portion 21b of the lower bag member 21. there is The front third tube portion 63b is inserted from the lower right end of the front third tube portion 63a to the right end of the front third hole portion 43H and extends below the seat pad 4P. Therefore, the front third tube portion 63b is routed from the upper side to the lower side of the seat pad 4P outside the expansion region EF and the right sealing portion 21b (outside the lower bag member 21). In this way, the third connecting member 63 on the front side is also routed so as to avoid the inflation region EF by using the third hole portion 43H on the front side. It becomes possible to put

In addition, in the rear third connecting member 64 shown in FIG. 7, the wiring route of the rear third tube portion 64a and the rear third tube portion 64b is determined by the rear third hole portion 44H. . Also in the rear third connecting member 64, the rear third tube portion 64a and the rear third tube portion 64b are generally similar to the corresponding portions (63a, 63b) of the front third connecting member 63. are routed to For this reason, the rear third connecting member 64 is also routed so as to avoid the expansion region EF by using the rear third hole portion 44H, so that it is arranged as far away from the lower bag member 21 as possible when inflated. It is possible to search.

In addition, in each fourth connection member 65 (66) shown in FIG. 7, the wiring route of each fourth pipe portion 65a (66a) and each fourth tube portion 65b (66b) is aligned with each corresponding fourth hole portion 45H ( 46H). In the front fourth connecting member 65 shown in FIG. 10, the front fourth tube portion 65a and the front fourth tube portion 65b are bilaterally symmetrical with the corresponding portions (63a, 63b) of the front third connecting member 63. It is arranged so that For this reason, the front fourth connecting member 65 is also routed so as to avoid the inflation region EF using the front fourth hole portion 45H, so it is routed as far away from the lower bag member 21 as possible when inflated. It becomes possible to keep 7, the rear fourth tube portion 66a and the rear fourth tube portion 66b correspond to the rear third connection member 64 (64a, 64b) and arranged so as to be bilaterally symmetrical. Therefore, since the rear fourth connecting member 66 is also routed so as to avoid the inflation region EF using the rear fourth hole 46H, it is arranged as far away from the lower bag member 21 as possible when inflated. It is possible to search.

[Operation of upper bag member]
When an occupant sits on the seat cushion 4 shown in FIGS. 1 to 3, the upper bag members 51 to 54 repeatedly expand and contract to massage the occupant on the seat cushion 4. As shown in FIGS. At this time, each of the upper bag members 51-54 can be inflated and contracted via the corresponding connecting members 61-66. For example, by operating the suction/exhaust device 15 via a control unit (not shown), fluid can be supplied to or discharged from each of the connection members 61 to 66 independently or in conjunction with each other. Therefore, the plurality of upper bag members 51 to 54 can be inflated or deflated independently, or can be inflated or deflated in conjunction with each other. As described above, the connecting members 61 to 66 are inserted through the corresponding holes 41H to 46H, and arranged while taking into account the lower bag member. Therefore, in this embodiment, the upper bag members 51 to 54 can press appropriate positions of the occupant on the seat cushion 4 while securing the expandability of the lower bag member 21, thereby providing excellent seat performance. It is a configuration that contributes to ensuring

As described above, in this embodiment, avoidance portions (41HH, 42HH, etc.) are provided in each of the holes 41H to 46H so as to avoid the inflatable region (inflatable region EF) of the lower bag member 21. ing. The connecting members 61 to 66 are inserted into the avoiding portions (41HH, 42HH, etc.) of the holes 41H to 46H and are routed from the upper side to the lower side of the seat pad 4P, thereby inflating the lower bag. It is possible to route the cable as far away from the member 21 as possible. Especially in this embodiment, since the connection members 61-66 are arranged outside the lower bag member 21 in the unfolded state, unintended proximity between the lower bag member 21 and the connection members 61-66 during the unfolded state is avoided. etc. can be avoided more reliably. The seat pad 4P of this embodiment is provided with a plurality of upper bag members 51 to 54 and connecting members 61 to 66 for massage from the viewpoint of improving seat performance. Even in such a case, by inserting the connecting members 61 to 66 through the corresponding holes 41H to 46H, it is possible to route the connecting members 61 to 66 as far away from the lower bag member 21 as possible when deployed. It has become. Therefore, according to this embodiment, the connection members 61 to 66 for the upper bag member can be routed to the seat cushion 4 while taking the lower bag member 21 into consideration.

The vehicle seat 2 of this embodiment is not limited to the embodiment described above, and can take various other embodiments. In the present embodiment, the configuration (shape, size, arrangement position, arrangement position, number of arrangements, etc.) of the upper bag members 51 to 54 and the connection members 61 to 66 has been exemplified. It is not intended to be limiting. A plurality of upper bag members or a single upper bag member can be arranged at appropriate positions on the seating surface of the seat pad. Further, the upper bag member may be provided with a bag-like portion and another slightly smaller bag-like portion overlapping each other, and these may be inflated at the same time. In addition to being used for massage (refreshment), the upper bag member can also be inflated to alert the occupant, or to support the occupant's posture when driving around a curve. . In addition, the upper bag member may be arranged above the lower bag member, and may be arranged in the accommodation portion in consideration of seating comfort, or may be arranged as it is on the seating surface.

The same number of connecting members as the number of upper bag members (bag-like portions) provided can be used, and one connecting member can be connected to a plurality of upper bag members (bag-like portions). The connection member can also be configured by a wiring (linear member) capable of transmitting an electric signal to the upper bag member. In this case, the electric signal from the connecting member can operate an inflator or a pump built in the upper bag member, or open/close an electromagnetic valve for intake or exhaust. Also, the wiring route of the connection member can be changed as appropriate. For example, it is also possible to route the connection member extending from the upper bag member to the front side (or rear side) of the top plate main portion and then insert it through the hole formed in the front side (or rear side) of the expansion area. is. Also, the connection member may slightly interfere with the sealing portion when the lower bag member is deployed as long as it does not excessively hinder the deployment of the lower bag member.

Further, although the configuration of each of the holes 41H to 46H is illustrated in the present embodiment, the configuration of the holes is not intended to be limited. Part or all of the holes may be formed so as to avoid the expansion region. For example, all of the first holes (second holes) in this embodiment are formed outside the expansion region. can also When the first hole or the like is formed outside the expansion area, a groove is provided in the seating surface for communicating the corresponding accommodation portion and the first hole or the like, and the pipe portion corresponding to the groove is arranged. It is desirable to keep Also, the hole may be inclined in a direction away from the expansion region gradually from the upper side to the lower side. It should be noted that a plurality of or a single connection member can be inserted through the hole, and it is not necessary to form a hole for each connection member. Also, a wire-like or plate-like member can be arranged in the hole to restrict the movement of the connecting member to the expansion region.

In the present embodiment, the configuration of the vehicle seat 2 is exemplified, but the configuration of the vehicle seat may be changed as appropriate, and may be a vehicle seat for one person or a vehicle seat for multiple people. Also, the configurations of the seat frame, the seat pad, and the seat cover can be appropriately changed according to the configurations of the upper bag member and the lower bag member. For example, the seating surface of the seat pad can be provided with a plurality of or a single storage area, and all of the storage areas can accommodate the upper bag member. It is also possible to dispose the upper bag member only at the accommodation portion. Further, the upper bag member can be arranged in the accommodation portion via screws, bolts, clips, or the like, and can also be arranged in the accommodation portion by means of adhesion, fusion, or the like. Also, the configuration of the lower bag member can be changed as appropriate. The configuration of the present embodiment can be applied to general vehicle seats such as vehicles, aircraft, trains, and ships.

2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 9 Slide rail 4S Seat cover 4SS Mat material 4P Seat pad 4F Seat frame 4a Top plate main part 4b Right top plate side part 4c Left top plate side part 4d Bank part 10 Front frame 10a Upper plate portion 10b Front plate portion 11 Side frame 12 Rear frame 13 Reinforcing frame 14 S spring 15 Air intake/exhaust device 16 Blower device 20 Bag device 21 Lower bag member 21a Bag main body 21b Seal portion 22 Inflator 23 Support surface member 31 Right vertical groove portion 32 Left vertical groove portion 33 Front horizontal groove portion 34 Rear horizontal groove portion 35 Passage portions 36, 37 Opening portion 41 First accommodation portion 42 Second accommodation portion 43 Third accommodation portion 44 Fourth accommodation portion 41H First hole portion 41HH One avoidance portion 42H Second hole portion 42HH Second avoidance portion 43H Third hole portion 44H on the front side Third hole portion 45H on the front side Fourth hole portion 46H on the front side Fourth hole portion 51 on the rear side First upper bag member 51a Seal portion 51b Bag-shaped portion 51c Belt portion 52 Second upper bag member 52a Separate seal portion 52b Separate bag-shaped portion 52c Separate band portion 53 Third upper bag member 53a Outer seal portion 53aa Central seal portion 53bb Front bag-shaped Part 53b Rear bag-shaped part 53cc Front belt part 53c Rear belt part 54 Fourth upper bag member 54a Another peripheral seal part 54aa Another center seal part 54bb Another front bag-like part 54b Another rear part bag-like portion 54cc another front belt portion 54c another rear belt portion 61 first connection member 61a first pipe portion 61b first tube portion 62 second connection member 62a second pipe portion 62b second tube portion 63 Front third connection member 63a Front third tube portion 63b Front third tube portion 64 Rear third connection member 64a Rear third pipe portion 64b Rear third tube portion 65 Front fourth connection Member 65a Front fourth tube section 65b Front fourth tube section 66 Rear fourth connection member 66a Rear fourth tube section 66b Rear fourth tube section EF Expansion region (lower bag member of the present invention) inflatable area of
EF1 Right edge of expansion area EF2 Left edge of expansion area FS Floor surface

Claims (3)

A seat cushion serving as a seat portion is arranged above the seat pad, a seat pad supported by the seat frame, a lower bag member arranged below the seat pad and supported by the seat frame, and above the seat pad. and an upper bag member;
The lower bag member is displaceable from a contracted state in which it is contracted at the front portion of the seat pad to a deployed state in which it expands toward the rear of the seat and is connected to the upper bag member. A vehicle seat in which a linear connection member is routed from the upper side to the lower side of the seat pad,
A hole penetrating vertically through the seat pad is provided, and at least a part of the hole is formed so as to avoid an inflatable region of the lower bag member when the seat pad is viewed from above. and the connecting member is arranged from the upper side to the lower side of the seat pad while being inserted into the avoiding section. 2. The vehicle seat according to claim 1, wherein the connecting member is arranged outside the lower bag member in the unfolded state from the upper side to the lower side of the seat pad. The seat cushion includes a plurality of the upper bag members for massage and the number of connecting members corresponding to the number of the upper bag members arranged,
3. Each of the plurality of upper bag members can be inflated and contracted via a corresponding connecting member, and each connecting member is inserted and wired through the corresponding hole. The vehicle seat described in .

Images