JP2022104036A - Vehicle seat device - Google Patents

Abstract

To reduce the bulge deformation of a pad member by an air bag device from being inhibited by a skin, and obtain required submarine restraining effect.SOLUTION: A vehicle seat device includes: a frame; a seat cushion 22 including a pad member 40 disposed on the frame and a skin 42 covering the pad member 40; and an air bag device 54 disposed in the frame so as to deform to bulge the front part of the pad member 40 upward. The skin 42 includes a folded part (expansion part) 46 capable of extending so as to permit the bulge deformation of the pad member 40.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle seat device, and more particularly to a vehicle seat device incorporating a mechanism for suppressing the occurrence of a submarine phenomenon.

As a seat device for vehicles such as automobiles, the seat cushion is used to suppress the occurrence of a submarine phenomenon in which the lower body of the seat device slips forward from the seat cushion when a large acceleration is applied to the seat device in the front-rear direction. It is known that a submarine suppressing mechanism that uplifts and deforms the front side upward by an airbag device is incorporated (for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2005-193844 Japanese Unexamined Patent Publication No. 2007-153030

The seat cushion includes a pad member made of polyurethane foam or the like, and a leather or a resin sheet covering the pad member. When the pad member is raised and deformed by the airbag device, the epidermis tends to be stretched, and the epidermis tends to hinder the deformation of the pad member. This reduces the submarine inhibitory effect.

An object to be solved by the present invention is to reduce the inhibition of the raised deformation of the pad member by the airbag device by the epidermis so that the required submarine suppressing effect can be obtained.

The vehicle seat device according to one embodiment of the present invention includes a frame (10), a pad member (40) provided on the frame, and a seat cushion (22) including a skin (42) covering the pad member. A vehicle seat device (10) having an airbag device (54) provided on the frame so as to deform the front portion of the pad member so as to be raised upward, wherein the skin is the pad member. Includes expandable portions (46, 42C, 80A, 43A, 45A) that allow for uplift deformation of the.

According to this configuration, the uplift deformation of the pad member is reduced from being hindered by the epidermis, and the required submarine suppressing effect can be obtained.

In the vehicle seat device, preferably, the unfolding portion includes a folded portion (46) of the skin.

According to this configuration, a development unit can be obtained with a simple configuration.

In the vehicle seat device, the unfolding portion preferably includes a joining portion (82) in which the overlapping portions (42C, 80A) of the epidermis are ruptibly joined when the airbag device is unfolded.

According to this configuration, a development unit can be obtained with a simple configuration.

In the vehicle seat device, preferably, the unfolding portion is a first joining portion (82) in which two overlapping end portions (42C, 80A) of the epidermis are ruptibly joined when the airbag device is unfolded. ) And the second joint portion (the second joint portion), which is located on the terminal side of the terminal portion with respect to the first joint portion and inseparably joins the both terminal portions of the epidermis that overlap each other when the airbag device is deployed. 84) and is included.

According to this configuration, a development unit can be obtained with a simple configuration.

In the vehicle seat device, preferably, in the vehicle seat device, the joint portion preferably includes a sewn portion.

According to this configuration, a reliable joint can be obtained.

In the vehicle seat device, preferably, the unfolding portion includes a clip (90) that elastically grips two overlapping ends (43A, 45A) of the epidermis, and the clip is the airbag. It is configured to release the end when the device is deployed.

According to this configuration, the unfolding portion is easily configured by utilizing the hanging portion of the epidermis.

In the vehicle seat device, preferably, in the vehicle seat device, the clip forms a hanging portion of the skin.

According to this configuration, the hanging portion of the epidermis is used as the deploying portion.

In the vehicle seat device, preferably, the pad member has a groove (41) extending laterally on the upper surface at a position in the front-rear direction corresponding to the airbag device.

According to this configuration, the uplift deformation of the pad member by the airbag device becomes easy.

In the vehicle seat device, preferably, the pad member has a groove (41) extending laterally on the lower surface at a position in the front-rear direction corresponding to the airbag device.

According to this configuration, the uplift deformation of the pad member by the airbag device becomes easy.

The vehicle seat device preferably includes a harness (58) extending between the frame and the seat cushion and connected to the airbag device, and a cover member fixed to the frame and covering the harness. Further has (60).

With this configuration, the harness is less likely to break.

According to the above configuration
According to the vehicle seat device according to the present invention, the uplift deformation of the pad member is reduced from being hindered by the epidermis, and the required submarine suppressing effect can be obtained.

Partial cross-sectional perspective view showing Embodiment 1 of the vehicle seat device according to the present invention. Enlarged sectional view of the main part of the vehicle seat device according to the first embodiment. Enlarged perspective view showing the front pan and the airbag device of the vehicle seat device according to the first embodiment. Enlarged sectional view of the harness arrangement portion of the vehicle seat device according to the first embodiment. Enlarged sectional view of the main part of the vehicle seat device according to the second embodiment. Enlarged sectional view of the harness arrangement portion of the vehicle seat device according to the third embodiment. Enlarged sectional view of the main part of the vehicle seat device according to the fourth embodiment. Partial cross-sectional perspective view of the vehicle seat device according to the fifth embodiment. Enlarged sectional view of the main part of the vehicle seat device according to another embodiment. Enlarged perspective view showing the front pan and airbag device of the vehicle seat device according to another embodiment.

(Embodiment 1)
Embodiment 1 of the vehicle seat device according to the present invention will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, the vehicle seat device 10 is a seat device for an automobile, and is slidably engaged with left and right guide rails (lower rails) 12 installed on a floor panel (not shown) of the automobile. It is provided on the combined slider (upper rail) 14, and the position in the front-rear direction can be changed.

The vehicle seat device 10 has a seat cushion frame 16 fixed to a slider 14, a support shaft 18 extending in the left-right direction (horizontal direction) at the rear of the seat cushion frame 16, and a lower end attached to the support shaft 18. It includes a seat back frame 20 that can be tilted about a support shaft 18. A seat cushion 22 that supports the buttocks and thighs of the seated person is attached to the upper part of the seat cushion frame 16. A seat back 24, which serves as a backrest for the seated person, is attached to the front portion of the seat back frame 20. A headrest 26 is attached to the upper part of the seat back 24.

The seat cushion frame 16 has left and right side members 30 extending in parallel to each other in the front-rear direction, front pan 32 extending in the left-right direction to connect the front portions of the left and right side members 30 to each other, and left and right sides. It includes a rear rod 34 that extends and connects the rear portions of the left and right side members 30 to each other, and forms a square frame shape in a plan view.

The seat cushion 22 has a pad member 40 made of polyurethane foam resin or the like, and a skin 42 that covers an outer surface excluding the bottom surface of the pad member 40, and has a square shape in a plan view. The seat cushion 22 is supported by the left and right side members 30 on both the left and right sides, the front part by the front pan 32, and the rear part by the rear rod 34, and extends so as to exhibit a substantially horizontal upper surface.

The skin 42 is made of leather, a resin sheet, a woven fabric, or the like. The skin 42 has a front portion 42A extending along the front portion 40A of the pad member 40, as shown in FIG. The front portion 42A of the epidermis 42 has a folded portion 46 that is folded up and down with a predetermined vertical length on the lower side and overlaps back and forth. In the folded-back portion 46, adjacent ones are bonded to each other by a double-sided adhesive tape (not shown) or the like in order to maintain the overlapped state.

The folded-back portion 46 receives a tension of a predetermined value or more so as to allow the raised deformation of the pad member 40 caused by the unfolding operation of the airbag device 54, which will be described later, so that the upper surface of the skin 42 is broken by bonding. It forms a development part that extends to increase the front-back length of the part. The tension referred to here is the tension in the vertical direction, which is the front-back direction, on the upper surface of the skin 42.

The skin 42 is bent rearward from the lower end of the folded-back portion 46 and extends backward toward the lower side of the pad member 40, and a locking metal fitting 50 is attached to the end of the posterior extending portion 42B by a suture 48 or the like. ing. The locking metal fitting 50 engages with the trailing edge portion 32A of the front pan 32 with the hook portion 50A at the tip. By this engagement, a predetermined tension is applied to the epidermis 42 under a steady state. The tension applied to the skin 42 under this steady state is set to such an extent that the bonding of the folded portions 46 is not broken.

The front pan 32 includes a laterally long recess 32B, as shown in FIG. A mount bracket 52 having a lower surface shape equivalent to the upper surface shape of the front pan 32 is fixed to the upper surface of the front pan 32 by fasteners 56 such as rivets. An airbag device 54 is attached to a portion of the mount bracket 52 corresponding to the recessed portion 32B. The airbag device 54 includes an inflator (not shown) and an airbag (not shown), and the airbag is inflated by the operation of the inflator by an electric signal from the outside. Hereinafter, the expansion of the airbag is referred to as a deployment operation of the airbag device 54. The deployment operation of the airbag device 54 may be performed when a front-rear acceleration of a predetermined value or more acts on the vehicle seat device 10 and the seated person, such as when a vehicle collides.

A groove 41 extending in the left-right direction (lateral direction) is formed on the upper surface of the pad member 40 at a position in the front-rear direction corresponding to the airbag device 54.

When the airbag device 54 is deployed by an electric signal from the outside, the front portion of the pad member 40 is deformed so as to rise upward in a chevron shape with the apex directly above the airbag device 54. When the front portion of the pad member 40 is raised and deformed, the thigh of the seated person is lifted along the raised deformation. By this operation, the raised deformation of the pad member 40 becomes a resistance against the lower body of the seated person slipping forward from the seat cushion 22, and the occurrence of the submarine phenomenon is suppressed.

When the pad member 40 is raised and deformed, a tension of a predetermined value or more acts on the skin 42. Due to this tension, the bonding of the folded-back portion 46 of the skin 42 is broken, and the folded-back portion 46 expands. As a result, the anterior-posterior length of the upper surface portion of the epidermis 42 is extended to increase.

Due to this behavior, the uplifting deformation of the pad member 40 due to the unfolding operation of the airbag device 54 is reduced from being hindered by the epidermis 42, the uplifting deformation of the pad member 40 is satisfactorily performed, and the required submarine suppression effect is achieved. Is obtained.

By providing the groove 41, the force required for the raised deformation of the pad member 40 due to the unfolding operation of the airbag device 54 is reduced. As a result, even if the high-power airbag device 54 is not used, the pad member 40 is reliably uplifted and deformed, and the certainty of the submarine suppressing effect is improved.

As shown in FIG. 1, a harness (electric wire) 58 is wired on the front pan 32 in order to send an electric signal from the outside to the airbag device 54. The harness 58 extends between the upper surface of the front flange portion 32C of the front pan 32 and the lower surface of the pad member 40 of the seat cushion 22 and is connected to the airbag device 54.

As shown in FIGS. 1 and 3, a cover member on the upper surface of the front flange portion 32C covers a portion of the harness 58 extending back and forth over the upper surface of the front flange portion 32C over substantially the entire length. 60 is provided. As shown in FIG. 4A, the cover member 60 is an electrically insulating resin molded product, and is outside the semi-cylindrical portion 60A for accommodating the harness 58 and both edges of the semi-cylindrical portion 60A. It has a flange portion 60B extending toward the side and a plurality of check-shaped locking claw portions 62 extending downward from the lower surface of the flange portion 60B. The cover member 60 is fixed to the front pan 32 by inserting each locking claw portion 62 into the through hole 32D formed in the front flange portion 32C.

The cover member 60 prevents the harness 58 from interfering with the pad member 40 and disconnecting due to an impact or vibration at the time of sitting, a raised deformation of the pad member 40, or the like.

As shown in FIG. 4B, the cover member 60 may be composed of a combination of two left and right halves 64 and 66. In this case, the locking claw portion 62 is formed on the flange portions 64A and 66A of the half bodies 64 and 66, respectively. As shown in FIG. 4C, the cover member 60 may have a half-split structure in which the receiving portion 68 of the harness 58 can be opened and closed by the hinge 68A. In this case, the locking claw portion 62 is formed on the base portion 68B of the receiving portion 68.

(Embodiment 2)
Embodiment 2 of the vehicle seat device according to the present invention will be described with reference to FIG. In FIG. 5, the portion corresponding to FIG. 2 is designated by the same reference numeral as that shown in FIG. 2, and the description thereof will be omitted.

The epidermis 42 includes an auxiliary epidermis 80 having an anterior-posterior overlapping end 80A with the end 42C of the posterior extension 42B. A locking metal fitting 50 is attached to the auxiliary skin 80 by a suture 48 or the like. The locking metal fitting 50 engages with the trailing edge portion 32A of the front pan 32 with the hook portion 50A at the tip.

The end portion 42C and the end portion 80A overlap each other with a predetermined longitudinal length, and the first joint portion 82 that can be broken during the deployment operation of the airbag device 54 and the end portion 42C rather than the first joint portion 82. It is located on the terminal side of the 80A and is joined to each other in two stages by a second joining portion 84 which is joined indestructibly during the deployment operation of the airbag device 54 to form a developing portion that extends the vertical length of the skin 42. The first joint portion 82 and the second joint portion 84 are due to stitching having different stitch strengths, bonding with different adhesive strengths, and the like.

At steady state, as shown in FIG. 5, the first joint portion 82 and the second joint portion 84 are not broken, and the first joint portion 82 and the second joint portion 84 are predetermined. They are in a state of overlapping each other with a vertical length.

When the front portion of the pad member 40 is raised and deformed by the unfolding operation of the airbag device 54, a tension of a predetermined value or more acts on the skin 42, and the first joint portion 82 is broken. As a result, the overlap between the terminal portion 42C and the terminal portion 80A is separated from each other, and the epidermis 42 is extended to increase the anterior-posterior length of the upper surface portion.

Due to this behavior, the uplifting deformation of the pad member 40 due to the unfolding operation of the airbag device 54 is reduced from being hindered by the skin 42, and the uplifting deformation of the pad member 40 is satisfactorily performed. The required submarine suppression effect can be obtained.

Since the second joint portion 84 maintains the joint state even after the deployment operation of the airbag device 54, the pad member 40 is not exposed to the outside.

The epidermis 42 and the auxiliary epidermis 80 may be integrated, and the terminal portion 42C and the terminal portion 80A may be bent in a U shape. In this case, the second joint 84 may be omitted.

(Embodiment 3)
Embodiment 3 of the vehicle seat device according to the present invention will be described with reference to FIG. In FIG. 6, the portion corresponding to FIG. 2 is designated by the same reference numeral as that shown in FIG. 2, and the description thereof will be omitted.

The pad member 40 has a hanging groove 86 extending in the left-right direction at an intermediate portion in the front-rear direction. The hanging groove 86 is a bottomed groove opened on the upper surface of the pad member 40.

The skin 42 includes a rear skin 43 that covers the rear side of the hanging groove 86 of the pad member 40 and a front skin 45 that covers the front side of the hanging groove 86 of the pad member 40. The rear skin 43 has the front end 43A dropped into the suspension groove 86. The front end skin 45 has the rear end portion 45A dropped into the suspension groove 86. The front end portion 43A and the rear end portion 45A overlap each other over a predetermined longitudinal length, and the anchor member 90 is connected to the terminal portion by a suture 88.

The pad member 40 has a clip member 92 made of a resin molded product fixed to the bottom of the hanging groove 86. The clip member 92 has a pair of front and rear gripping claws 92A and a rollover U-shaped operating arm portion 92B extending from the front gripping claws 92A to a position in the front-rear direction corresponding to a position directly above the airbag device 54.

The pair of front and rear gripping claws 92A elastically grip the anchor member 90 while the posterior epidermis 43 and the anterior epidermis 45 are tensioned in the vertical direction under a steady state. By receiving an upward force from the airbag device 54 on the free end during the deployment operation of the bag device 54, the pair of front and rear gripping claws 92A are deformed in a direction away from each other.

As a result, when the airbag device 54 is deployed, the anchor member 90 is disengaged from the engagement with the clip member 92, and the front end portion 43A of the rear skin 43 and the rear end portion 45A of the front skin 45 are suspended grooves 86. You will be able to freely escape upward from.

When the front portion of the pad member 40 is raised and deformed due to the deployment operation of the airbag device 54, the front end portion 43A of the rear skin 43 and the rear end portion 45A of the front skin 45 are free from the suspension groove 86 upward. It is in a state where it can escape and the vertical extension of the epidermis 42 can be performed by resistance.

As a result, the fact that the pad member 40 is raised and deformed by the unfolding operation of the airbag device 54 is less likely to be hindered by the skin 42, and the pad member 40 is satisfactorily raised and deformed. Submarine suppression effect can be obtained.

In this embodiment, the suspension groove 86 acts in the same manner as the groove 41 of the first embodiment, and the force required for the raised deformation of the pad member 40 due to the unfolding operation of the airbag device 54 is reduced.

(Embodiment 4)
Embodiment 4 of the vehicle seat device according to the present invention will be described with reference to FIG. 7. In addition, FIG. 7
In FIG. 6, the part corresponding to FIG. 6 is designated by the same reference numeral as that shown in FIG. 6, and the description thereof will be omitted.

In the fourth embodiment, the clip member 92 is arranged at a position where the hanging groove 86 and the clip member 92 correspond to the position directly above the airbag device 54. In this embodiment, the clip member 92 has a pair of flange portions 92C extending outward from the pair of gripping claw portions 92A.

The clip member 92 receives an upward force from the airbag device 54 at the bottom during the deployment operation of the airbag device 54, so that the pair of front and rear gripping claws 92A are deformed in a direction away from each other.

As a result, when the airbag device 54 is deployed, the anchor member 90 is disengaged from the engagement with the clip member 92 as in the third embodiment, and the front end portion 43A of the rear skin 43 and the rear end of the front skin 45 are disengaged. The portion 45A is in a state where it can freely escape upward from the suspension groove 86.

As a result, even in the fourth embodiment, the uplifting deformation of the pad member 40 due to the unfolding operation of the airbag device 54 is reduced from being hindered by the skin 42, and the uplifting deformation of the pad member 40 is satisfactorily performed. Also in the embodiment, the required submarine suppressing effect can be obtained.

Further, also in this embodiment, the suspension groove 86 has the same function as the groove 41 of the first embodiment, and the force required for the uplift deformation of the pad member 40 due to the unfolding operation of the airbag device 54 is reduced.

(Embodiment 5)
Embodiment 5 of the vehicle seat device according to the present invention will be described with reference to FIG. In FIG. 8, the portion corresponding to FIG. 1 is designated by the same reference numeral as that shown in FIG. 1, and the description thereof will be omitted.

In the fifth embodiment, the front pan 32 of the seat cushion frame 16 is provided so as to be tilted forward by a pivot 100 extending in the horizontal direction at the front ends of the left and right side members 30.

The front pan 32 is urged upward by a compression coil spring 102 provided between the support plate 15 connected to the slider 14 and the front pan 32.

A lock member 108 is rotatably provided on the support plate 15 by a bracket 104 around the horizontal axis. The lock member 108 is urged by a torsion coil spring (not shown) in a direction in which the locking claw portion 108A engages with the engaging recess 110 formed in the front pan 32.

When the locking claw portion 108A of the lock member 108 is engaged with the engaging recess 110, the front pan 32 takes a substantially horizontal posture, and the seat cushion 22 takes a substantially horizontal posture accordingly. maintain.

The lock member 108 is driven by an actuator (not shown) in a direction in which the locking claw portion 108A is separated from the engagement with the engagement recess 110. When the locking claw portion 108A of the lock member 108 is separated from the engagement with the engaging recess 110, the front pan 32 is tilted forward about the pivot 100 by the spring force of the compression coil spring 102. Along with this tilt, the front portion of the seat cushion frame 16 is deformed so as to tilt forward. As a result, the resistance against the lower body of the seated person slipping forward from the seat cushion 22 increases, and the occurrence of the submarine phenomenon is suppressed.

Although the description of the specific embodiment is completed above, the present invention can be widely modified without being limited to the above embodiment. For example, as shown in FIG. 9, the groove 41 may extend in the left-right direction on the lower surface of the pad member 40 at a position in the front-rear direction corresponding to the airbag device 54. As shown in FIG. 10, the harness 58 may be arranged so as to extend from the airbag device 54 on the front pan 32 toward the trailing edge portion 32A of the front pan 32. Again, the harness 58 is covered by the cover member 60 over the entire length of the portion extending along the front pan 32.

10: Vehicle seat device 14: Slider 15: Support plate 16: Seat cushion frame 18: Support shaft 20: Seat back frame 22: Seat cushion 24: Seat back 26: Headrest 30: Side member 32: Front pan 32A: Rear Edge 32B: Recess 32C: Front flange 32D: Through hole 34: Rear rod 40: Pad member 40A: Front 41: Groove 42: Skin 42A: Front 42B: Rear extension 42C: End 43: Rear skin 43A: Front end 45: Front end 45A: Rear end 46: Folded part 48: Suture 50: Locking bracket 50A: Hook part 52: Mount bracket 54: Airbag device 56: Fastener 58: Harness 60: Cover member 60A: Semi-cylindrical part 60B: Flange part 62: Locking claw part 64: Half body 66: Half body 68: Receiving part 68A: Hinge 68B: Base 80: Auxiliary skin 80A: End part 82: First Joint portion 84: Second joint portion 86: Suspension groove 88: Suture 90: Anchor member 92: Clip member 92A: Grip claw portion 92B: Actuating arm portion 92C: Flange portion 100: Pivot shaft 102: Compression coil spring 104: Bracket 108: Lock member 108A: Locking claw portion 110: Engagement recess

Claims (10)

A frame, a seat cushion including a pad member provided on the frame and a skin covering the pad member, and an airbag device provided on the frame so as to deform the front portion of the pad member so as to be raised upward. It is a vehicle seat device having and
The skin is a vehicle seat device including a deployable portion that can be extended so as to allow the pad member to be raised and deformed. The vehicle seat device according to claim 1, wherein the unfolding portion includes a folded portion of the skin. The vehicle seat device according to claim 1, wherein the unfolding portion includes a joint portion in which portions of the epidermis that overlap each other are joined so as to be breakable at the time of unfolding the airbag device. The unfolded portion is a first joint portion in which two overlapping end portions of the epidermis are ruptibly joined when the airbag device is deployed, and a terminal portion closer to the end portion than the first joint portion. The vehicle seat device according to claim 1, wherein both ends of the epidermis that are located and overlap each other are joined to a second joint that is indestructibly joined when the airbag device is deployed. The vehicle seat device according to claim 3 or 4, wherein the joint portion includes a suture portion. Claims include a clip that elastically grips two overlapping ends of the epidermis, the clip being configured to release the end when the airbag device is deployed. The vehicle seat device according to 1. The vehicle seat device according to claim 6, wherein the clip forms a hanging portion of the skin. The vehicle seat device according to any one of claims 1 to 7, which has a groove extending laterally on the upper surface of the pad member at a position in the front-rear direction corresponding to the airbag device. The vehicle seat device according to any one of claims 1 to 7, which has a groove extending laterally on the lower surface of the pad member at a position in the front-rear direction corresponding to the airbag device. Any one of claims 1 to 9, further comprising a harness extending between the frame and the seat cushion and connected to the airbag device, and a cover member fixed to the frame and covering the harness. The vehicle seat device described in the section.

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