JP2008238955A - Vehicular seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat capable of obtaining protective performance according to an occupant's physique. <P>SOLUTION: A pad 15 arranged inside a seat cushion 14 of a vehicular seat 10 comprises a separated body part 17 and a general part 16 surrounding its front and rear and right and left peripheries. A hole part 50 is formed in a part behind a center in the longitudinal direction of a vehicle in the general part 16 of the pad 15. One end 61 of a connection member 60 is embedded in an upper side of the hole part 50, and fixed thereto, and the other end 62 is embedded inside the pad 15 from a seat frame opposing surface 17L side on a lower side of the separated body part 17, and fixed thereto. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle seat mounted on an automobile, and more specifically, a vehicle seat including an airbag device inside a seat cushion.

When a collision that causes an impact occurs on the front of the automobile, a phenomenon may occur in which an occupant seated on a vehicle seat mounted on the automobile moves forward. This phenomenon is called the submarine phenomenon. Conventionally, for example, a vehicle seat described in Patent Document 1 is known as means for suppressing this phenomenon.
JP 2005-112000 A

  In the vehicle seat described in Patent Document 1, when the airbag device is operated, the leg portion of the occupant is lifted to increase the rearward downward inclination of the occupant seating surface of the vehicle seat. Will be suppressed. On the other hand, the physique of passengers varies from person to person, and there is room for improvement in terms of obtaining fine-grained protection performance according to the physique difference. For example, if the occupant's push-up amount due to inflation of an air bag is set based on the standard physique (weight), the push-up amount is appropriate for an occupant who is smaller (lighter) than the standard physique. On the other hand, it is conceivable that an occupant who is excessive or slightly larger (weight) than the standard physique will be deficient with respect to an appropriate push-up amount.

In order to solve the above-described problems, the present invention is a vehicle seat having the following configuration.

A vehicle seat according to the present invention is a vehicle seat provided with an airbag device inside a seat cushion. The airbag device includes an airbag that can be inflated when the airbag device is operated, and is provided inside the seat cushion. The pad to be pushed up has a push-up portion that is pushed upward by the inflation of the airbag, and the push-up amount of the push-up portion is proportional to the dent amount according to the dent amount of the pad that is generated by the seating of the occupant on the rear side of the pad. And a push-up amount control means controlled in this manner.

In this case, the pad has a hole portion that is open on the lower side and opens in the vertical direction at the rear side portion thereof, and is inserted into the hole portion, and the upper side of the hole portion and the push-up portion A connecting member that connects the lower side is provided, and the connecting member is fixed to the upper side of the hole portion in one of the end portions in a state in which a portion between the end portions on both sides is freely movable, It is desirable that the other end is fixed to the lower side of the push-up portion to constitute a push-up amount control means.

Further, in this case, a storage portion that can receive the connection member is provided below the hole portion, and a fixing means that fixes the connection member is provided below the hole portion and above the storage portion. It is desirable that

In addition, the pad has an occupant seating surface on the upper side, and includes a general part and a separator part that is arranged adjacent to the general part and is separable from the general part. However, when the airbag device is actuated by the airbag as the push-up portion, the occupant seating surface in the separation body portion is disposed so as to protrude upward from the occupant seating surface in the general portion, and is separated. It is desirable to provide an upward protrusion amount restricting means for restricting the upward protrusion amount of the body part.

Further, the separator part is formed of a plurality of divided bodies, and each of the divided bodies is provided with an upward protrusion amount regulating means for restricting the upward protrusion amount of each divided body, It is desirable that the connecting member is connected so that the lower side of the divided body arranged at the foremost side is the lower side of the push-up portion.

  In the vehicle seat according to the present invention, an airbag device is provided inside the seat cushion, the airbag device includes an airbag that can be inflated when the airbag device is operated, and a pad provided inside the seat cushion includes the airbag. A push-up portion that is pushed upward by the expansion of the bag, and the push-up amount of the push-up portion is controlled in proportion to the dent amount in accordance with the dent amount of the pad generated by the seating of the occupant on the rear side of the pad. As a specific configuration of the push-up amount control means, the pad has a hole portion opened at the lower side and opened along the vertical direction at the rear side portion, and inside the hole portion. A connecting member that is inserted and connects the upper side of the hole and the lower side of the push-up part is provided, and the connecting member is free to move between the ends on both sides. In state, it is fixed one of the ends on the upper side of the hole, and is fixed to the lower side of the portion pushed up the other end.

When the occupant sits on the vehicle seat, the pad is recessed downward (bends to sink). At that time, when the occupant seated on the vehicle seat is viewed from the side, the occupant's buttocks and upper body are located on the rear side of the pad, and the load (weight) is most applied to that portion. Therefore, the end of the connecting member fixed to the upper side of the hole moves downward from the initial position before the occupant is seated by the amount of depression of the pad. When the airbag is inflated, the push-up part is pushed up, but since the connecting member is connected to the upper side of the hole part and the lower side of the push-up part, the upward movement of the push-up part is Regulated by. The amount of movement corresponds to the amount of movement from the initial position to the lower side (pad depression amount) at the end fixed to the upper side of the hole. In other words, the amount of movement of the end fixed to the upper side of the hole is the amount of push-up. In other words, the length of the connecting member (moving stroke) protruding downward from the opening of the hole due to the movement of the end fixed to the upper side of the hole becomes the push-up amount. Therefore, if the amount of depression (sinking amount) on the lower side of the pad changes depending on the physique (weight) of the occupant, the push-up amount of the push-up part also changes, and the push-up amount of the occupant due to the inflation of the airbag, When standard physique (weight) is set as a reference, for passengers who are smaller (lighter) than the standard physique, the push-up amount is reduced, and passengers who are larger (weight) than the standard physique On the other hand, the push-up amount can be increased. That is, the push-up amount control means in which the push-up amount of the push-up portion is controlled in proportion to the dent amount (sink amount) according to the dent amount (sink amount) generated by the occupant sitting on the rear side of the pad. As functioning.

Further, in the vehicle seat according to the present invention, a storage portion that can receive the connection member is provided below the hole portion, and the connection member is fixed at a portion below the hole portion and above the storage portion. A fixing means is provided.

  In the initial state before the occupant is seated, a part of the connecting member is located in the hole. When the occupant is seated, the connecting member located in the hole projects downward by the amount of depression (sinking amount) downward of the pad. If the airbag does not inflate, no tension is applied to the connecting member, so that the protruding portion of the connecting member is loosened and bent. Such a loosely bent portion corresponds to the length (movement stroke) of the connecting member described above, and is the amount of push-up when the airbag is inflated. And the accommodating part provided in the downward side of the hole receives the part which this connection member protruded. When the airbag is inflated, the push-up portion moves upward, whereby the protruding portion of the connecting member is pulled and moved. At this time, since the fixing means for fixing the connecting member is provided in the lower part of the hole and the upper part of the storage part, the connecting member exceeds the dent amount of the pad due to the seating of the occupant, and the air Since the movement due to the tension due to the expansion of the bag is suppressed, it is possible to suppress the amount of push-up from becoming excessive.

  Further, in the vehicle seat according to the present invention, the pad has an occupant seating surface on the upper side, and is disposed adjacent to the general part and the general part, and is separable from the general part. A body portion, and when the separation body portion is pushed up by the airbag when the airbag device is operated as a push-up portion, the occupant seating surface in the separation body portion is positioned above the occupant seating surface in the general portion. An upward protrusion amount restricting means is provided that is arranged so as to be protrudeable and restricts the upward protrusion amount of the separating body portion.

Therefore, it is possible not only to control the amount of push-up according to the occupant's physique (weight), but also to selectively push up only the portion (region) of the occupant leg that is desired to be pushed up, and the amount of protrusion. Therefore, it is possible to reduce the size of the airbag device by reducing the size of the airbag relative to the airbag that needs to push up a wide area of the pad as in the conventional case. In addition, the desired outer shape of the vehicle seat during the operation of the airbag device can be achieved with a relatively inexpensive configuration without restricting the inflation shape of the airbag.

Further, in the vehicle seat according to the present invention, the separating body portion is formed from a plurality of divided bodies, and the upward protruding amount restriction for restricting the upward protruding amount of each divided body to each divided body. Means are provided, and the connecting member is connected with the lower side of the divided body arranged at the foremost side among the divided bodies as the lower side of the push-up portion.

Therefore, the push-up amount can be further selectively set for the portion (region) to be pushed up of the occupant leg, and the projection amount of each divided body can be regulated by the upper projection amount regulating means, thereby reducing the size. Even with such an airbag, it is possible to set the manner in which the occupant legs are pushed up in detail. Moreover, since the connection member is connected as the downward side of the division body arrange | positioned in the forefront side among the division bodies as the downward side of a pushing-up part, the separation body part is comprised from the some division body. In addition, the push-up amount can be controlled in accordance with the physique (weight) of the occupant.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 7 show a vehicle seat 10 according to an embodiment. The vehicle seat 10 includes a seat back 12 mainly corresponding to the back portion of the occupant P seated on the vehicle seat 10, and mainly from the hip to the thigh and the knee joint in the occupant P seated on the vehicle seat 10. It consists of a corresponding seat cushion 14. A headrest 11 corresponding mainly to the head of an occupant P seated on the vehicle seat 10 is attached to an upper end portion of the seat back 12. The vehicle seat 10 is mainly used for a driver seat and a passenger seat of an automobile as a vehicle. In the present specification, unless otherwise specified, the vertical, front-rear, and left-right directions refer to the normal traveling direction of the vehicle as the front, and the normal vehicle position relative to the vehicle seat provided in the vehicle. Based on the direction seen from the occupant seated facing the direction of travel. 1 to 4, 6, and 7 are views from the left side of the vehicle. In FIGS. 2 to 7, an occupant P that will be described later is not shown. Further, in FIG. 6 and FIG. 7, the skin 25 and the connecting member 60 described later are not shown.

In the seat back 12 and the seat cushion 14, an end portion on the lower side of the seat back 12 and an end portion on the rear side of the seat cushion 14 are connected via a reclining mechanism 13. The seat back 12 is configured such that the upper end of the seat back 12 is movable in the front-rear direction with the portion of the reclining mechanism 13 as a rotation axis, and the inclination angle of the seat back 12 is moved to an arbitrary position by the reclining mechanism 13. It is configured to be selectable and fixable. In addition, when the occupant P is seated, the seat back 12 is generally inclined such that the upper end portion of the seat back 12 is rearward of the lower end portion of the seat back 12. It is.

  The seat cushion 14 includes a pad 15, a seat frame 19, a skin 25, and a seat rail (not shown). The seat rail is mounted on the lower side of the seat frame 19, and the vehicle seat 10 is fixed to the vehicle by fixing the seat rail to the vehicle side. In addition, the seat rail usually has a sliding mechanism (not shown) in the front-rear direction. The reclining mechanism 13 is generally provided in advance on the rear side of the seat cushion 14.

  The pad 15 has a plate-like substantially rectangular parallelepiped shape with a certain thickness, and is arranged on the upper side of the seat frame 19 so that the opposite wide sides are up and down. The pad 15 has an occupant seating surface 15U as a part on which an occupant sits on the upper side, and a seat frame facing surface 15L as a part in contact with a seat frame 19 described later on the lower side. Yes. Furthermore, the pad 15 has a separating part 17 in a region biased to the front side, and a general part 16 is disposed adjacent to the front and rear, left and right outer peripheries of the separating part 17. . That is, the general part 16 is formed in a state in which a part of the pad 15 is vertically pulled through and pulled out (that is, in a hole-like form), and the separating part 17 is formed in the part that has been pulled out (hole-like part). ). Accordingly, the general portion 16 and the separating body portion 17 also have an occupant seating surface 16U and an occupant seating surface 17U, respectively, on the upper side of the general portion 16 and the occupant seating surface 17U, and these two occupant seating surfaces 16U and 17U. The seat 15U is formed on the lower side of the pad 15 and has a seat frame facing surface 16L and a seat frame facing surface 17L which are parts in contact with the seat frame 19 on the lower side. A seat frame facing surface 15L of the pad 15 is formed by the frame facing surfaces 16L and 17L. That is, the general part 16 is disposed adjacently so as to surround the periphery (front and rear, left and right outer peripheries) excluding the occupant seating surface 17U and the seat frame facing surface 17L in the separating body part 17.

As shown in FIG. 6, the general portion 16 and the separation body portion 17 are in contact (contact) with each other at the boundary portion 18 in a normal state (a state where an airbag apparatus M described later is not in operation). In FIGS. 1 and 6, the boundary portion 18 between the general portion 16 and the separator portion 17 is drawn so as to always form a certain gap, but this is to facilitate understanding of the configuration. In practice, the contact portion 18 is configured to be in contact (contacted) with almost no gap so that rattling at the boundary portion 18 between the general portion 16 and the separating portion 17 is difficult to occur. The boundary portion 18 includes a boundary surface 17K that forms front and rear, left and right outer peripheral surfaces of the separating body portion 17, and an inner peripheral surface corresponding to the boundary surface 17K in the general portion 16 (the inner periphery of the hole-shaped portion). And the boundary surface 16K that forms (contact surface).

Further, as shown in FIG. 6, the boundary portion 18FR formed on the vehicle front side includes a boundary surface 17KFR that forms a surface on the vehicle front side in the separator 17 and a hole-shaped portion of the general portion 16. The inner peripheral surface is formed in contact (contact) with the boundary surface 16KFR that forms the front surface of the vehicle, and the boundary portion 18RR formed on the rear side of the vehicle The boundary surface 17KRR that forms the surface on the side and the boundary surface 16KRR that forms the surface on the vehicle rear side in the inner peripheral surface of the hole-shaped portion of the general portion 16 are formed in contact (contact). The boundary portion 18FR (that is, the boundary surface 16KFR and the boundary surface 17KFR) is formed so as to be inclined linearly so that the upper side is positioned on the vehicle front side rather than the lower side, and the boundary portion 18RR (that is, the boundary surface 18RR) The boundary surface 16KRR and the boundary surface 17KRR) are formed so as to be inclined linearly so that the upper side is positioned on the vehicle rear side with respect to the lower side. That is, the boundary portion 18 (18FR / 18RR) is formed so as to spread upward as viewed from the left-right direction of the vehicle.

  As described above, the boundary portion 18 between the general portion 16 and the separator portion 17 in the pad 15 is formed so as to spread upward. Therefore, in a state where the airbag apparatus M described later is activated, there is nothing to suppress or restrict the movement of the separating body portion 17 as it moves upward and protrudes with respect to the general portion 16 (so-called, The boundary surface 16K of the general portion 16 and the boundary surface 17K of the separating body portion 17 can be easily separated from the contacted (contacted) state. . That is, the airbag device M is actuated to inflate the airbag 27 including the seat frame facing surface 17L in the separator 17 and push the lower side of the separator 17 to move the separator 17 upward. When it comes to the state which pushes up, it will be accelerated | stimulated that the isolation | separation body part 17 protrudes upwards rather than the general part 16. FIG. That is, it is promoted that the occupant seating surface 17U in the separated body portion 17 projects upward from the occupant seating surface 16U in the general portion 16, and the boundary portion formed by these boundary surfaces 16K and 17K. 18 functions as the upward movement promoting means JS that promotes the upward movement of the separator 17. Accordingly, only the portion (region) of the occupant leg that is desired to be pushed up can be selectively pushed up by the separating portion 17 provided with the upward movement promoting means JS, so that the size of the airbag 27 can be reduced. This makes it possible to reduce the size of the airbag apparatus M itself. Further, the upward movement promoting means JS is formed so as to promote the upward movement of the separation body portion 17 only by the shape of the boundary portion 18 between the separation body portion 17 and the general portion 16 in the pad 15. Therefore, the configuration of the vehicle seat 10 does not become extremely complicated. In addition, since the shape of the boundary portion 18 between the separating portion 17 and the general portion 16 in the pad 15 is simply formed so as to spread upward, the upward movement promoting means JS is formed, so that the vehicle The configuration of the protective sheet 10 is not extremely complicated and can be achieved with a simple configuration. Further, the general portion 16 is formed in a manner in which a part of the pad 15 is passed through up and down, and the separator portion 17 is formed in a manner in which the portion that has been removed is filled. The configuration of the vehicle seat 10 is not extremely complicated and can be achieved with a simple configuration. Note that, as a result of the separating body portion 17 projecting upward from the general portion 16, a step portion D0 between the separating body portion 17 and the general portion 16 is formed. (See Figure 7.)

  Further, in the normal state where the boundary surface 16K of the general portion 16 and the boundary surface 17K of the separator portion 17 are in contact (contact), the boundary portion 18 is formed so as to spread upward. The separating body portion 17 is in a state where movement that protrudes downward from the general portion 16 is suppressed or restricted (so-called undercut portion is provided). In other words, the seat frame facing surface 17L in the separating portion 17 is suppressed from projecting below the seat frame facing surface 16L in the general portion 16, and is formed by these boundary surfaces 16K and 17K. The boundary portion 18 functions as a downward movement suppression means KY (KY1) that suppresses the downward movement of the separator portion 17. Therefore, in a normal state, the separator 17 in the pad 15 is in a state where it sinks downward with respect to the general part 16, that is, in a state in which a step is generated on the occupant seating surface 15U of the pad 15. Therefore, the ride comfort performance of the occupant is not impaired. Further, the downward movement suppressing means KY (KY1) is formed so as to suppress the downward movement of the separating body portion 17 only by the shape of the boundary portion 18 between the separating body portion 17 and the general portion 16 in the pad 15. Therefore, the configuration of the vehicle seat 10 can be further prevented from becoming extremely complicated. Further, since the shape of the boundary portion 18 between the separating portion 17 and the general portion 16 in the pad is simply formed so as to spread upward, the downward movement restraining means KY (KY1) is formed. The configuration of the vehicle seat 10 is not extremely complicated and can be achieved with a simple configuration. (See FIGS. 5 to 7)

  For these reasons, the boundary portion 18 has both functions of the upward movement promoting means JS and the downward movement suppressing means KY (KY1). That is, the upward movement promoting means JS also serves as the downward movement suppressing means KY (KY1). Therefore, the configuration of the vehicle seat 10 is not extremely complicated.

  In the case of this embodiment, as shown in FIG. 6, the separator 17 is further divided into three in the front-rear direction. That is, the separator 17 includes three divided bodies 17A, 17B, and 17C arranged in order from the front side of the vehicle. Each of the divided bodies 17A, 17B, and 17C forms an occupant seating surface 17U of the separating body portion 17 on the upper side thereof, and forms a seat frame facing surface 17L of the separating body portion 17 on the lower side thereof. Then, the vehicle front side of the divided body 17A forms a boundary surface 17KFR that forms a surface of the separating body portion 17 on the vehicle front side, and the vehicle rear side of the divided body 17C forms a surface of the separating body portion 17 on the vehicle rear side. The boundary surface 17KRR is formed.

  Further, the divided bodies 17A, 17B, and 17C are divided between the divided bodies 17A and 17B, and between the divided bodies 17B and 17C, respectively, as a boundary portion 30AB and a boundary portion 30BC. Is formed. The boundary portion 30AB is formed by contacting (contacting) a boundary surface 17AKRR that forms a vehicle rear side surface of the divided body 17A and a boundary surface 17BKFR that forms a vehicle rear side surface of the divided body 17B. 30BC is formed by contacting (contacting) a boundary surface 17BKRR that forms a vehicle rear surface of the divided body 17B and a boundary surface 17CKFR that forms a vehicle front surface of the divided body 17C. Furthermore, the boundary portion 30AB (that is, the boundary surface 17AKRR and the boundary surface 17BKFR) is formed so as to be inclined linearly so that the upper side is positioned on the vehicle front side rather than the lower side, and the boundary portion 30BC is formed. (In other words, the boundary surface 17BKRR and the boundary surface 17CKFR) are formed so as to be inclined linearly so that the upper side is positioned on the vehicle rear side with respect to the lower side. That is, the boundary portion 30 (30AB / 30BC) is formed so as to spread upward as viewed from the left-right direction of the vehicle.

As described above, the boundary portions 30 (30AB and 30BC) between the divided bodies 17A, 17B, and 17C in the separating body portion 17 are formed so as to spread upward. Therefore, in the state in which the airbag apparatus M described later is operated, the movement of the divided body 17B is suppressed or restricted when the divided body 17B moves upward and protrudes with respect to the adjacent divided bodies 17A and 17C. There is nothing (so-called undercut portion), boundary surface 17BKFR of divided body 17B and boundary surface 17AKRR of divided body 17A, and boundary surface 17BKRR and divided body 17C of divided body 17B. The boundary surface 17CKFR can be easily separated from the contact (contact) state. That is, the airbag device M is actuated to inflate the airbag 27 including the seat frame facing surface 17L in the separator 17 and push the lower side of the separator 17 to move the separator 17 upward. When the air bag 27 is in a state of being pushed up, if the air bag 27 is in an inflated shape so that the divided body 17B is pushed more, the divided body 17B is higher than the adjacent divided bodies 17A and 17C. Protruding to the side is promoted. In other words, the configuration of the upward movement promoting means JS applied to the separation body portion 17 and the general portion 16 is applied to the division bodies 17A, 17B, and 17C of the separation body portion 17 itself, and the upward projecting shape of the separation body portion 17 This mode can be set more finely. Therefore, it is possible to set the amount of push-up further selectively for the portion (region) of the occupant leg that is desired to be pushed up. Therefore, even if the airbag 27 is downsized, the push-up of the occupant leg is finely detailed. It is possible to set the mode. Note that as a result of the divided body 17B projecting upward from the divided bodies 17A and 17C adjacent to the front and rear thereof, a step portion D1 between the divided body 17B and the divided bodies 17A and 17C adjacent to the front and rear thereof is formed. The Rukoto. (See Figure 7.)

Further, in a normal state where the boundary surface 17BKFR of the divided body 17B and the boundary surface 17AKRR of the divided body 17A, and the boundary surface 17BKRR of the divided body 17B and the boundary surface 17CKFR of the divided body 17C are in contact (contact). Since the boundary 30 (30AB / 30BC) is formed so as to spread upward, the divided body 17B moves downward and protrudes from the adjacent divided bodies 17A / 17C. It is in a state of being suppressed or regulated (a state in which a so-called undercut portion is provided). That is, the configuration of the downward movement restraining means KY (KY1) applied to the separated body portion 17 and the general portion 16 is applied to the divided bodies 17A, 17B, and 17C of the separated body portion 17 itself, and each divided body 17A, 17B, and 17C is applied. It is possible to suppress the downward protrusion of the seat frame facing surface 17L in the separating member portion 17 formed by the lower side. (See FIGS. 5 to 7)

For these reasons, the pad 15 has a boundary portion 18 (18FR · 18RR) · 30 (30AB · 30BC) with respect to the general portion 16, the separator portion 17, and the divided portions 17A, 17B, and 17C in the separator portion 17. Are arranged so as to form a so-called arch shape, so that the boundary portion 18 (18FR / 18RR) of the general portion 16 and the separation body portion 17 is provided with the upward movement promoting means JS and the downward movement suppressing means KY (KY1). (I.e., the upward movement promoting means JS also serves as the downward movement suppressing means KY (KY1)), and the divided bodies 17A, 17B, and 17C in the separated body portion 17 are also provided. Similar effects can be obtained.

  In this embodiment, the divided bodies 17A, 17B, and 17C of the separating body portion 17 are formed in a downward direction when viewed from the left and right directions in the respective divided bodies 17A, 17B, and 17C in order to form a firm arch shape. It is set so that the dimension in the front-rear direction of the upper end is longer than the dimension in the front-rear direction of the end on the side, and the separator 17 as a whole is also on the lower side when viewed from the left-right direction. The dimension in the front-rear direction of the upper end is set to be longer than the dimension in the front-rear direction of the end. That is, a combination of adjacent boundary portions 18 (18FR / 18RR) / 30 (30AB / 30BC), that is, between the boundary portions 18FR / 30AB and between the boundary portions 30BC / 18RR so as to spread upward. Is formed.

  In addition, an airbag device M, which will be described later, is disposed below the pad 15, and the dimension (opening size) LC1 of the opening 29 of the case 28 in the airbag device M in the vehicle front-rear direction is equal to that of the separator 17. The length is set short with respect to the dimension L1 in the front-rear direction of the lower end portion, and the front and rear end portions of the front side and the rear side on the lower side of the separating body portion 17 from the opening 29 The overlap margin LFR and the overlap margin LRR are provided in such a manner that the separator portion 17 is supported by the receiving surface 23 extending in the direction. In other words, the separating member 17 (particularly the divided members 17A and 17C arranged at the front and rear ends when viewed from the left-right direction) is prevented from moving downward by the receiving surface 23 as well. Therefore, this configuration also functions as the downward movement suppression means KY (KY2).

  In addition, in this embodiment, if the downward movement suppression means KY1 is employed, the function of suppressing the downward movement of the separator part 17 is achieved even if the downward movement suppression means KY2 is not used in combination. Therefore, in this case, the receiving surface 23 that forms the periphery of the opening 29 of the case 28 is not directly below the front, rear, left, and right (peripheral) ends on the lower side of the separator 17, but is offset to a slightly shifted position. It may be arranged. When the downward movement restraining means KY2 is adopted, at least one of the boundary portions 18FR and 18RR may be formed so that the slope is vertical or both slopes are parallel, and the upward movement promoting means JS. It is established as.

  Further, in this embodiment, the separating body portion 17 is used in the description as being composed of three divided bodies 17A, 17B, and 17C in the front-rear direction, but the upward movement promoting means JS or the downward movement suppression is used. As long as the configuration is established as the means KY (KY1) (arched configuration), the number of divisions may be two, or four or more. Moreover, the structure which divides | segments the isolation | separation body part 17 into the left-right direction is employ | adopted, the structure divided | segmented into the front-back, left-right direction is used together, or the structure which divides | segments in cyclic | annular form is employ | adopted seeing from an up-down direction. It is also possible. Moreover, in this embodiment, the front and rear, left and right peripheries of the separator part 17 are surrounded by the general part 16, the boundary part 18 (18FR, 18RR, 18RH, and 18LH) is configured by a plane, and the intersection of each plane is also substantially straight. However, they may be curved and connected within a range that does not deviate from the configuration established as the upward movement promoting means JS or the downward movement suppressing means KY (KY1). Further, in this embodiment, the front and rear, left and right peripheries of the separator part 17 are surrounded by the general part 16. However, the separator part 17 is configured such that the general part 16 and the separator part 17 are adjacent to each other only in the front and rear. It is good also as an aspect which is not enclosed by the general part 16 on both right and left.

In addition, although the material of the pad 15 is based on a general urethane foam material, a material in particular will not be limited if the elastic characteristic as a cushion material of a vehicle seat is acquired. Further, a reinforcing member (not shown) may be disposed on the lower side of the pad 15, the front / rear / right / left side surfaces, and the boundary portions 18 and 30. The material of the reinforcing member is a general cloth (woven fabric, non-woven fabric, etc.), but when the airbag device M is operated while the shape retention and destruction of the pad 15 are suppressed, The material is not particularly limited as long as it does not stick and can be easily separated. In addition, with respect to the above-described stepped portions D0 and D1, the separating body portion 17 is actually compressed not a little by the force pushed by the inflation of the airbag 27 and the force pushed by the occupant P seated on the vehicle seat 10. However, in FIG. 7, in order to promote understanding of the features and effects of the embodiment, the drawing is schematically performed while ignoring compression.

As shown in FIG. 7, the general portion 16 and the separating portion 17 in the pad 15 are connected by upward protrusion amount regulating means 40 (40 UFR, 40 LFR, 40 URR, 40 LRR). Further, each of the divided bodies 17A, 17B, and 17C in the separated body portion 17 is also divided into the adjacent divided bodies 17A and 17B and the divided bodies 17B and 17C by the upward protrusion amount regulating means 40 (40UAB, 40LAB, 40UBC, and 40LBC). It is connected. In addition, the connection between the general portion 16 and the separating portion 17 is specifically, the divided portion 17A and the adjacent general portion 16 on the vehicle front side are connected by the upward protrusion amount regulating means 40 (40UFR / 40LFR). The split body 17C and the adjacent general portion 16 on the vehicle rear side are connected by the upward protrusion amount regulating means 40 (40URR / 40LRR). When the airbag device M is actuated to complete the inflation and deployment of the airbag 27, the upward protrusion amount regulating means 40 shifts from the retracted state to the extended state, whereby the upper portion of the separating portion 17 with respect to the general portion 16. The amount of protrusion to the side is regulated. In FIG. 7, the divided body 17 </ b> B protrudes most upward, and the outer shape of the desired vehicle seat 10 when the airbag apparatus M operates is a substantially symmetrical mountain shape centered on the divided body 17 </ b> B. It is configured to make. As described above, the airbag device M can be obtained by simply connecting the general portion 16 and the separating body portion 17 of the pad 15 with the upward protrusion amount restricting means 40 without restricting the shape of the airbag 27 when the airbag 27 itself is inflated and deployed. It is possible to achieve the desired outer shape of the vehicle seat 10 at the time of the operation with a relatively inexpensive configuration.

As shown in FIGS. 8 and 9, the upward protrusion amount regulating means 40 is made of a material having a low elongation rate when tension is applied in the extending direction, and is composed of a flexible belt-like connecting member 41. A specific example of the connecting member 41 includes diverting a base fabric (made of nylon) that constitutes the airbag 27. However, the material and the shape are not particularly limited as long as the above desired properties are satisfied. Absent. Therefore, as long as it has flexibility, the connecting member 41 may not be a belt-like member, but may be, for example, a string-like member or a chain-like member.

In normal times, the connecting member 41 is housed in a recess 42 (42U / 42L) provided in the pad 15. The recess 42U provided on the upper side of the pad 15 has a substantially U shape with the upper side opened, and the end on the opening side further forms the recesses 42UFR and 42URR toward the outside in the vehicle front-rear direction. One end of the connecting member 41 (41U) is fixed inside the recess 42UFR so that both ends thereof do not protrude above the occupant seating surface 15U of the pad 15, and the other end is recessed 42URR. It is fixed inside. Note that the concave portions 42UFR and 42URR may be omitted as in the case of the concave portion 42L described later unless considering not to protrude upward from the occupant seating surface 15U. A specific example of the fixing of the both ends of the connecting member 41 to the pad 15 includes bonding with an adhesive 43, but any method may be used as long as it can be firmly fixed (for example, to the pad 15). Then, the end portion of the connecting member 41 may be insert-molded). The intermediate portion excluding both ends of the connecting member 41 has a length so that when the connecting member 41 expands, the divided body 17A has a predetermined amount of upward protrusion relative to the general portion 16 on the vehicle front side. Since it is adjusted and is normally in a slack state, the pad 15 is housed inside the recess 42U in a bent state so as not to protrude above the occupant seating surface 15U of the pad 15. The bent state of the connecting member 41 is not particularly limited as long as the storage state in the normal state and the expansion during the operation of the airbag apparatus M are compatible.

The concave portion 42L provided on the lower side of the pad 15 has a substantially U shape with the lower side opened. The concave portion 42L is not in a state in which the concave portion with the end on the opening side facing further outward is provided like the concave portion 42U. This is because the lower side of the pad 15 is a part whose design is not questioned as much as the occupant seating surface 15U. Therefore, the structure is simplified, and the fixing positions of the both ends of the connecting member 41 to the pad 15 are set on the seat frame facing surface 15L. Although set, it is also possible to provide a state in which a concave portion is provided with the end on the opening side facing further outward as in the concave portion 42U. The fixing of both ends of the connecting member 41 (41L) to the pad 15 and the storing in the recess 42L are the same as those of the connecting member 41 (41U). By providing the recess 42 in this manner, the connection member 41 (41U) of the upward protrusion amount regulating means 40 is normally exposed to the outside of the occupant seating surface 15U (design surface) of the pad. It will be suppressed, and it will be suppressed that the part stored in crevice 42 in connecting member 41 (41L) will contact with the member which constitutes seat frame 19.

Here, the details of the configuration of the pad 15 are exemplified by the upward protrusion amount regulating means 40 (40UFR / 40LFR) provided in a portion between the divided body 17A of the pad 15 and the general portion 16 adjacent to the front side of the vehicle. However, the other upward projecting regulation control means 40 (40UAB, 40LAB, 40UBC, 40LBC, 40URR, 40LRR) have the same configuration. In addition, each connecting member 41 is assumed to be a single band-shaped member having substantially the same width as the length of the separator 17 in the left-right direction, but a plurality of band-shaped, string-shaped, chain-shaped in the left-right direction. It is good also as a structure which added the member. Further, the recess 42 is formed at each boundary surface 16K (16KFR · 16KRR) · 17K (17KFR · 17KRR) of the pad 15 adjacent to each other at the boundary portion 18 (18FR · 18RR) and at the boundary portion 30 (30AB · 30BC). Although each of the boundary surfaces 17K (17AKRR, 17BKFR, 17BKRR, 17CKFR) of the adjacent divided bodies 17A, 17B, and 17C is provided, it may be configured to be provided only on one of the boundary surfaces 16K and 17K. . Further, in this embodiment, the boundary portions 18 and 30 are also provided in the state where the recesses 42 are provided. However, if the desired performance is satisfied, the boundary portions 18 and 30 formed by the surface contact with the boundary surfaces 16K and 17K. The connecting member 41 may be configured to be sandwiched between the boundary surfaces 16K and 17K. Further, here, each upper protrusion amount regulating means 40 is provided on both the upper side and the lower side of the pad 15, but each upper protrusion amount regulating means 40 is either on the upper side or the lower side. It is good also as a structure provided in only so that it may be provided alternately.

As shown in FIGS. 1 to 5, when the occupant P is seated on the vehicle seat 10, which is a portion of the pad 15 on the rear side of the center in the vehicle front-rear direction, the position of the buttocks of the occupant P is usually Thus, it is a part where the maximum weight (the weight of the occupant P) is applied (in other words, the part where the pad 15 is supposed to be crushed in the vertical direction, that is, in the thickness direction, by the seating of the occupant P. A hole 50 is provided in the pad 15 at an intermediate portion between the center in the vehicle front-rear direction and the end on the vehicle rear side. The hole portion 50 is provided in the general portion 16 of the pad 15, has an opening portion 50 </ b> L that opens on the seat frame facing surface 15 </ b> L side, which is the lower side of the pad 15, and substantially extends along the vertical direction of the vehicle. It is formed vertically. In this embodiment, the hole 50 is depicted as a through hole that also has an opening 50U that opens on the occupant seating surface 15U side, which is the upper side of the pad 15, but the occupant seating surface 15U side is closed. It may be. In this embodiment, the hole portion 50 is configured as a rectangular hole having a wide left and right width and a narrow front and rear width, assuming that a band-shaped connecting member 60 described later is inserted.

The connecting member 60 is made of a material having a low elongation rate when tension is applied in the extension direction, and is made of a flexible belt-like member. A specific example of the connecting member 60 includes diverting a base fabric (made of nylon) that constitutes the airbag 27. However, the material and the shape are not particularly limited as long as the above desired properties are satisfied. Absent. Therefore, as long as it has flexibility, the connection member 60 may be a string-like member or a chain-like member, for example, instead of a belt-like member.

A part of the connecting member 60 is inserted into the hole 50, and the remaining part is disposed so as to pass between the pad 15 and a seat frame 19 described later. Then, one end 61 of the connecting member 60 is embedded and fixed in the pad 15 from the inner wall 51 side of the hole 50 in the vicinity of the occupant seating surface 15U that is the upper side of the pad 15. . Further, the other end portion 62 of the connecting member 60 is below the divided body 17A located on the most front side of the vehicle among the divided bodies 17A, 17B, and 17C that form the above-described separated body portion 17 that functions as a push-up portion. The pad 15 is embedded and fixed inside the pad 15 from the side facing the seat frame 17L.

In FIGS. 1 to 5, the gap portion 35 between the pad 15 and the seat frame 19 is drawn so as to always form a certain amount of gap, but this is schematically shown to facilitate understanding of the configuration. Actually, the contact portion (gap portion 35) between the pad 15 and the seat frame 19 is configured to contact (adhere) with almost no gap so as not to cause looseness. Therefore, an insertion portion (not shown) that allows the connection member 60 to be inserted is provided separately from the gap portion 35. The insertion portion may be a groove shape or a tubular shape provided in the pad 15, or may be a groove shape or a tubular shape provided in the seat frame 19. Or it is good also as providing a groove-like thing in both the pad 15 and the seat frame 19, and making it a tubular thing. Alternatively, a separate insertion portion may be provided, and as a result, it is only necessary that the connecting member 60 inserted into the insertion portion is slidable with almost no resistance.

The seat frame 19 is provided with a storage portion 80 on the lower side of the hole portion 50 that can receive the connecting member 60 protruding from the hole portion 50 when the occupant P is seated on the vehicle seat 10. . The storage portion 80 has a bottomed concave shape with an opening on the upper side, and the side wall portions positioned in the front-rear direction are provided so as to incline toward the upper side. . In addition, the movement (sliding) of the connecting member 60 is restricted to a portion below the opening 50L of the hole 50 and below the seat frame facing surface 17L, and above the storage portion 80. A fixing means 70 is provided.

Now, when the occupant P is seated on the vehicle seat 10 configured as described above, the rear portion of the seat cushion 14 (more specifically, the pad 15) has the maximum amount of deformation due to its weight (weight). Dent (sink). Then, as shown in FIG. 3, with the deformation of the pad 15, one end 61 of the connecting member 60 moves downward from the initial position before the occupant P is seated. Then, in the initial state before the occupant P is seated, a part of the connecting member 60 located inside the hole 50 protrudes from the hole 50 by the moving stroke L2, and the connecting member 60 The protruding portion is received in the storage portion 80. The connecting member 60 is only fixed to one end 61 with respect to the pad 15, and the remaining portion slides relative to the pad 15, that is, the inner wall 51 of the hole 50. It is arranged to be possible. Further, in FIGS. 1 to 5, the hole portion 50 is depicted as forming a certain gap with respect to the connecting member 60, but this is schematically depicted in order to facilitate understanding of the configuration. As long as the connecting member 60 is slidable, the hole 50 may be formed in a configuration in close contact with the inner wall 51, that is, in a slit shape.

  When a frontal collision of the vehicle occurs in a state where the occupant P is seated on the vehicle seat 10, an airbag device M described later operates and the airbag 27 starts to inflate. Then, as shown in FIG. 4, as described above, the divided bodies 17A, 17B, and 17C are pushed upward. At that time, the connecting member 60 is fixed to the lower side of the split body 17A arranged on the foremost side, and the maximum amount of upward movement of the separating body portion 17 allowed by the above-described upward protrusion amount regulating means 40 The maximum amount of the movement stroke L2 of the connecting member 60 is set so as to be balanced (equal). Here, if the movement stroke L2 of the connecting member 60 is less than the above-described maximum moving amount of the separating member 17 upward, the moving amount of the separating member 17 upward is as follows. It is determined by the moving stroke L2. That is, instead of the upward protrusion amount restricting means 40, the connecting member 60 restricts the upward protrusion of the separating body portion 17. Then, since the moving stroke L2 of the connecting member 60 changes depending on the weight of the occupant P, the amount of movement of the separating member 17 upward changes according to the weight of the occupant P.

  In this embodiment, when the airbag apparatus M is operated, the fixing means 70 is operated to fix the connecting member 60 at the same time as or before the operation signal is sent to the airbag apparatus M. By doing so, when the airbag device M is activated to inflate the airbag 27 and the separating member 17 is pushed upward to apply tension to the connecting member 60, one of the connecting members 60 is The portion where the end 61 is fixed to the pad 15 is restrained from being pulled further downward from the position where the end 61 is moved downward due to the weight of the occupant P. That is, the moving stroke L2 of the connecting member 60 is limited only to the weight of the occupant P, and the connecting member 60 is pulled by the inflating force of the airbag 27 and the pad 15 is further recessed, so that the moving stroke L2 increases. Will be prevented. Therefore, the change in the amount of movement of the separating body portion 17 in accordance with the weight of the occupant P is assured.

  The fixing means 70 operates so as to be sandwiched from the vehicle front-rear direction, thereby fixing the connecting member 60. As a specific configuration, a hydraulic actuator (not shown) or the like may be used and disposed so as to face each other. The hydraulic actuator is operated by a control circuit (not shown) that controls the operation of the airbag apparatus M, or another control circuit (not shown) that controls the operation of the hydraulic actuator based on a signal from the control circuit. ). The fixing means 70 and its operation control means are not limited to the above embodiment, and may be appropriately adopted as long as the same effects as those of the above embodiment can be obtained.

  In addition, regarding the movement stroke L2 of the connecting member 60, the maximum amount of upward movement of the separating member 17 and the maximum amount of the movement stroke L2 of the connecting member 60 allowed by the upward protrusion amount restricting means 40 are balanced (equally). As described above, it is set as follows. In FIG. 2 to FIG. 4, the connecting member 60, the separator 17 and the like are schematically drawn to facilitate understanding of the configuration. In order to set so that the maximum amount of upward movement and the maximum amount of movement stroke L2 of the connecting member 60 are balanced (equal), the portion of the connecting member 60 on the end 62 side of the fixing means 70 is redundant. It may be left in a relaxed state. Or you may provide the adjustment means (not shown) which adjusts appropriately the redundant amount of the connection member 60 in the periphery of the isolation | separation body part 17 according to the movement stroke L2. A specific example of the adjusting means includes a pulley, but is not limited thereto as long as the same effect can be obtained. As described above, the connecting member 60 serves as a push-up amount control means in which the push-up amount of the push-up portion is controlled in proportion to the dent amount in accordance with the dent amount of the pad generated by the occupant sitting on the rear side of the pad. It is provided on the vehicle seat 10.

  As shown in FIGS. 1, 6, and 7, the seat frame 19 includes left and right side plates 20, a shaft 21, a spring 22, and a receiving surface 23. The receiving surface 23 is disposed on the front side of the center of the seat frame 19, and the shaft 21 is disposed on the rear side of the center of the seat frame 19. The spring 22 is an elastic body formed by bending a metal linear body such as a wire into a rectangular wave shape, and is disposed between the receiving surface 23 and the shaft 21, and an end portion on the front side of the spring 22. Is fixed to the rear portion of the receiving surface 23, and the rear end portion of the spring 22 is fixed to the shaft 21. The side plate 20 includes a left side plate 20LH and a right side plate 20RH, and is arranged so as to sandwich the receiving surface 23 and the shaft 21. In the case of this embodiment, a reclining mechanism 13 is provided on the further rear side of the shaft 21. In addition, the materials of the members constituting the seat frame 19 are mainly made of metal, but if the material can withstand the strength characteristics required for a vehicle seat (for example, the weight of a passenger or luggage), the material is particularly good. Is not limited.

  The shaft 21, the spring 22, and the receiving surface 23 constitute an upper end portion of the seat frame 19, and the above-described pad 15 is disposed on the upper side. In FIGS. 1 to 4, 6, and 7, the gap portion 35 between the pad 15 and the seat frame 19 is drawn so as to always form a certain gap. In order to facilitate understanding, in order to facilitate understanding, in practice, the contact portion (gap portion 35) between the pad 15 and the seat frame 19 is hardly contacted (contacted) with almost no gap so that it is difficult for rattling. It is configured.

  The receiving surface 23 is disposed on the lower side of the pad 15. In this embodiment, the receiving surface 23 is a plate-like member made of sheet metal, and has a substantially rectangular opening 24 having a long left-right direction at a substantially central portion thereof. The opening 24 is an opening for projecting from the case 28 when an airbag 27 described later is deployed and inflated. Further, the opening 24 is pierced so as to penetrate the upper side and the lower side of the receiving surface 23, and the receiving surface 23 is a portion of the plate-like surface, and the pad 15 disposed on the upper side. Is supporting.

  The epidermis 25 covers the upper side, front and rear, and left and right (all directions except the lower side) of the pad 15 (that is, in this embodiment, the pad 15 does not hinder the deployment and inflation of the airbag 27 described later). 15, avoiding directly covering the lower side of 15, and fixed to the front end of the receiving surface 23 in the seat frame 19, the shaft 21, and the side plate 20. In addition, the fixing | fixed site | part of the epidermis 25 is good also as a site | part other than the above-mentioned as long as it is a site | part which does not inhibit the expansion | deployment and expansion | swelling of the airbag 27 mentioned later. In addition, the material of the skin 25 is not particularly limited as long as it can be used as a sheet skin. In general, cowhide, synthetic leather, and chemical fiber fabric (fabric) for seats can be used.

  The airbag device M includes a retainer 36, an inflator 26, an airbag 27, and a case 28. The retainer 36 and the inflator 26 are built in the airbag 27. The inflator 26 is inserted and fixed inside the retainer 36, and has one connection cable (not shown). The retainer 36 has a gas outlet 37 and fixing bolts 38 (two). The airbag 27 has two small holes (not shown) through which the fixing bolts 38 provided in the retainer 36 are inserted, and small holes (not shown) through which the connection cable is inserted. And one place. The airbag 27 does not protrude greatly from an opening 29 of the case 28 described later (that is, in the state assembled as the vehicle seat 10, the pad 15 is remarkably deformed and affects the design formed together with the skin 25. The portion that expands and expands so as not to protrude from the opening 29, and is housed in the case 28 together with the retainer 36 and the inflator 26. ing. At this time, it may be wrapped with a wrapping member (not shown) so that the folded state of the airbag 27 does not collapse. The folded portion of the airbag 27 is disposed mainly with respect to the inflator 26 from the upper side, the rear side, or from the upper side to the rear side. 1, 6, and 7, the gap portion 35 between the pad 15 and the airbag 27 (seat frame 19) is drawn so as to always form a certain gap, and in the stored state. This is preferable because the airbag 27 is not easily affected by surrounding parts. However, as described above, if the protrusion is suppressed to such an extent that it does not affect the design, rattling at the contact portion (gap portion 35) between the pad 15 and the airbag 27 (seat frame 19) is prevented. You may be comprised so that it may contact a little so that it may be hard to come out.

  The case 28 includes a front side wall part 28FR, a rear side wall part 28RR, a left side wall part, a right side wall part, a bottom wall part 28T positioned on the lower side, and an opening part 29 opened on the upper side. It has a substantially rectangular parallelepiped shape that is long in the left-right direction. The bottom wall portion 28T has two small holes (not shown) through which the fixing bolts 38 provided in the retainer 36 are inserted. In other words, the retainer 36 and the airbag 27 are each provided with one fixing nut 39 with respect to the bottom wall portion 28T of the case 28 via fixing bolts 38 (two) provided on the retainer 36. (In other words, the retainer 36 and the bottom wall portion 28T are fastened by a fixing bolt 38 and a fixing nut 39 so as to sandwich the airbag 27). If the assembly workability and the deployment performance of the airbag 27 are not taken into consideration, the fixing portion of the airbag 27 to the case 28 is an arbitrary position in the case 28 such as the front side wall 28FR and the rear side wall 28RR. You may change to Further, the case 28 has one small hole through which the connection cable is similarly inserted in a portion corresponding to one small hole through which the connection cable of the airbag 27 is inserted. The connection cable is connected to a control device (not shown) on the vehicle side. When the drive current from the control device is supplied to the inflator 26, the inflator 26 releases the gas, the gas flows into the airbag 27 through the gas outlet 37 of the retainer 36, and the airbag 27 is deployed and inflated. Will be.

  The case 28 is attached to the lower side of the receiving surface 23 so that the opening 29 thereof substantially coincides with the opening 24 of the receiving surface 23 described above. In this embodiment, the case 28 is made of sheet metal and is formed integrally with the receiving surface 23. An upper end portion of the rear side wall portion 28RR is constituted by the rear side wall portion 28RR and the receiving surface 23, and forms a substantially right-angled bent portion. Examples of the integral formation method include drawing from a single metal plate and assembling a plurality of metal plates by welding. The material and the forming method of the receiving surface 23 and the case 28 are not particularly limited as long as strength characteristics that can withstand the deployment and inflation of the airbag 27 are obtained. The case 28 may be configured as a separate body from the receiving surface 23, and the method of fastening them is not particularly limited as long as strength characteristics that can withstand the deployment and inflation of the airbag 27 are obtained.

In this embodiment, the air bag 27 is inflated so that the air bag 27 is inflated in the region occupied by the separating portion 17 on the front side of the pad 15. (See FIG. 4 and FIG. 7), the inflation completion shape of the airbag 27 can be arbitrarily set, and the range of the separating portion 17 in the pad 15 as a region where the airbag 27 is inflated and The position can also be set arbitrarily.

In this embodiment, the operation condition of the airbag apparatus M is described as a so-called frontal collision. However, since various aspects are conceivable in an actual collision, the operation condition itself is not particularly limited. Further, in this embodiment, the headrest 11, the seat back 12, and the seat cushion 14 are configured separately from each other for the vehicle seat 10. However, the present invention is also applicable to those in which these are integrally formed (so-called bucket seat). is there. Further, the present invention can be applied to an intermediate seat and a rear seat in an automobile having two or more rows in the front-rear direction. Furthermore, it is applicable also to vehicle seats other than automobiles.

Further, as one of means for improving riding comfort performance, as shown in a known document (for example, Japanese Utility Model Laid-Open No. 58-013166), the general portion 16, the separated portion 17, and each divided portion 17 A in the pad 15.・ The hardness of 17B and 17C may be set separately.

It is sectional drawing which shows the structure seen from the left side of the vehicle seat of 1st Embodiment which concerns on this invention. It is the elements on larger scale which show the state where the passenger | crew is not seated of the vehicle seat of embodiment shown in FIG. FIG. 2 is a partially enlarged view showing the vehicle seat of the embodiment shown in FIG. 1 in a state where an occupant is seated and before the airbag device is activated. It is the elements on larger scale which are the states where the passenger | crew sat down of the vehicle seat of embodiment shown in FIG. It is a perspective view of the seat cushion part (pad) of the vehicle seat of embodiment shown in FIG. It is the elements on larger scale of the isolation | separation body part of the vehicle seat of embodiment shown in FIG. It is the elements on larger scale of the isolation | separation body part at the time of the airbag apparatus action | operation of the vehicle seat of embodiment shown in FIG. It is the elements on larger scale of the pad in the normal time of the vehicle seat of embodiment shown in FIG. It is the elements on larger scale of the pad at the time of the action | operation of the airbag apparatus of the vehicle seat of embodiment shown in FIG.

Explanation of symbols

D0: Stepped portion D1 (between the general portion 16 and the separated body portion 17): (with the divided body 17B and the divided bodies 17A and 17C adjacent to the front and rear thereof)
Step part JS: Upward movement promoting means KY: Downward movement restricting means KY1: (formed by the boundary part 18 between the general part 16 and the separator part 17)
Lower movement restricting means KY2: (formed by a receiving surface 23 extending in the front-rear direction of the opening 29)
Downward movement restricting means L1: dimension L2 (in the front-rear direction of the lower end of the separator 17): movement stroke LC1 (of the connecting member 60): dimension LFR (in the vehicle front-rear direction of the opening 29 of the case 28) : Overlapping allowance LRR (supporting the receiving surface 23 on the lower end portion on the lower side of the separating body portion 17): Overlap (supporting the receiving surface 23 supports the lower end portion on the lower side of the separating body portion 17) Fee M: Airbag device P: Crew 10: Vehicle seat 11: Headrest 12: Seat back 13: Reclining mechanism 14: Seat cushion 15: Pad 15L: Seat frame facing surface 15U (in pad 15): (In pad 15) Crew seating surface 16: General part 16K (in pad 15): Boundary surface 16KFR (in general part 16): (General part) Boundary surface 16KRR (front side in 6): Boundary surface 16L (back side in general portion 16): Seat frame facing surface 16U (in general portion 16): Crew seating surface 17 (in general portion 16): (in pad 15) ) Separation body part 17A: Split body 17AKRR (on the front side in the front-rear direction of the separation body part 17): Boundary surface 17B (on the rear side in the split body 17A): Split (at the intermediate part in the front-rear direction of the separation body part 17) Body 17BKFR: Boundary surface 17BKRR (on the front side in the divided body 17B): Boundary surface 17C (on the rear side in the divided body 17B): Divided body 17CKFR: (on the rear side in the front-rear direction of the separated body portion 17) Boundary surface 17K on the front side in (): Boundary surface 17KFR (on the separating body portion 17): (front in the separating body portion 17) Boundary surface 17KRR: Boundary surface 17L (on the rear side of the separating member 17): Seat frame facing surface 17U (in the separating member 17): Crew seating surface 18 (in the separating member 17): (General portion 16) Boundary portion 18FR: (front side) boundary portion 18RR: (rear side) boundary portion 19: seat frame 20: side plate 20LH: left side plate 20RH: right side plate 21: shaft 22: Spring 23: receiving surface 24: opening 25 (receiving surface 23): skin 26: inflator 27: airbag 28: case 28FR: front side wall 28RR (of case 28): rear side wall 28T (of case 28): Bottom wall portion 29 (of case 28): Opening portion 30 (of case 28): Boundary portion 30AB (between divided bodies 17A, 17B, and 17C): ( Boundary part 30BC (between split bodies 17A and 17B): Boundary part 35 (between divided parts 17A and 17C): Gap part 36 (between pad 15 and seat frame 19): Retainer 37: Gas outlet 38: (Retainer 36) Bolt 39: Nuts 40 (for fixing the retainer 36): Upper protrusion amount restricting means 40UFR: Upper protrusion amount restricting means 40LFR (above the general portion 16 and the divided body 17A): (General portion 16 and the divided body) Upper protrusion amount restricting means 40UAB (on the lower side of 17A): Upper protrusion amount restricting means 40LAB (on the upper side of divided body 17A and divided body 17B): Upper (on the lower side of divided body 17A and divided body 17B) Projection amount regulating means 40UBC: Upper projection amount regulating means 40LBC (on the upper side of the divided body 17B and the divided body 17C): (between the divided body 17B and the divided body 17C) Upward protrusion amount restricting means 40URR (upward side of divided body 17C and general part 16) Upward protrusion amount restricting means 40LRR (upward side of divided body 17C and general part 16) Means 41: Connecting member 41U: (Upper side) connecting member 41L: (Lower side) connecting member 42: Recess 42U: (Upper side) recessed portion 42UFR: (From the opening end of the recessed portion toward the vehicle front side outside) ) Concave part 42URR: (from the opening end of the concave part toward the outside on the vehicle rear side) Concave part 42L: Concave part 43 (downward side): Adhesive 50: Hole part 50U (of pad 15): (Upper side of hole part 50) Opening portion 50L: Opening portion 51 (on the lower side of the hole portion 50): Inner wall 60 (of the hole portion 50): Connecting member 61 (with the pad 15 and the separator 17): (One of the connecting members 60) ) End 62: ( Binding members other 60) end 70: locking means 80: Storage unit

Claims (5)

In a vehicle seat equipped with an airbag device inside the seat cushion,
The airbag device includes an airbag that is inflatable when the airbag device is in operation,
The pad provided inside the seat cushion has a push-up portion that is pushed upward by the inflation of the airbag,
A vehicle having a push-up amount control means in which a push-up amount of the push-up portion is controlled in proportion to the dent amount in accordance with a dent amount of the pad generated by a passenger seating on the rear side of the pad. Sheet. The pad has a hole that opens on the rear side thereof and opens along the vertical direction on the lower side,
A connecting member is provided that is inserted into the hole and connects the upper side of the hole and the lower side of the push-up part,
The connection member is fixed in a state where a portion between both end portions is freely movable, and one of the end portions is fixed to the upper side of the hole portion, and the other end portion of the connection member is the push-up portion. The vehicle seat according to claim 1, wherein the vehicle seat is configured as the push-up amount control means by being fixed to a lower side of the vehicle. On the lower side of the hole portion, a storage portion capable of receiving the connecting member is provided,
The vehicle seat according to claim 2, wherein fixing means for fixing the connecting member is provided at a portion below the hole and above the storage portion. The pad has an occupant seating surface on the upper side, and includes a general part and a separator part that is arranged adjacent to the general part and separable from the general part,
When the separating body portion is pushed up by the airbag during the operation of the airbag device as the push-up portion, the occupant seating surface in the separating body portion is higher than the occupant seating surface in the general portion It is arranged so that it can protrude to the side,
4. The vehicle seat according to claim 2, further comprising an upward protrusion amount restricting means for restricting an upward protrusion amount of the separating body portion. 5. The separating body portion is formed of a plurality of divided bodies, and each of the divided bodies is provided with an upward protrusion amount regulating means for restricting an upward protrusion amount of each of the divided bodies,
5. The vehicle seat according to claim 4, wherein the connecting member is connected to a lower side of the divided body arranged at the foremost side of the divided body as a lower side of the push-up portion. .

Images