JP2012061956A - Structure for storing buckle of seat belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for storing buckle of seat belt which does not allow a buckle to abut on the buttocks or the femoral region of a seating person on the seating, can prevent oppression traces due to the buckle from remaining on a seat back and can simplify an attachment structure of the buckle.SOLUTION: The structure for storing the buckle 10 of seat belt includes: a buckle storage part 9 whose upper side is opened, formed on a seat cushion 2; and the buckle 10 of seat belt stored in the buckle storage part 9, wherein the upper end 10J of the buckle 10 is located on the lower side than the upper surface 2J of the seat cushion 2.

Description

The present invention
A buckle storage part with an open top is formed on the seat cushion,
The present invention relates to a seat belt buckle housing structure in which a seat belt buckle is housed in the buckle housing portion.

The seat belt buckle storage structure has an advantage that the tongue of the seat belt can be easily connected to the buckle because the buckle in a fixed position is opened upward. Therefore, in recent years, it has been adopted in many automobiles.
Conventionally, in the above-described seat belt buckle storage structure, as disclosed in Patent Document 1, the buckle is configured to be retractable from the buckle storage portion, and a part of the buckle protrudes from the upper surface of the seat cushion. Cover the gap between the opening edge of the buckle compartment and the outer peripheral surface of the buckle with a telescopic cover member, and when the seat back falls down, the buckle is pressed against the seat back and retracts into the buckle compartment It was.

JP 2010-64639 A

According to the above-described conventional structure, since a part of the buckle protrudes from the upper surface of the seat cushion, when the seat occupant (occupant) moves from the right seat to the left seat or vice versa in the vehicle, There has been a problem that the buckle comes into contact with the buttocks and thighs of the seated person.
In addition, since the buckle is pressed by the seat back and retracted into the buckle housing portion, a pressure mark due to the buckle remains on the seat back.
And since the buckle was configured to be retractable, the buckle mounting structure was complicated. Furthermore, the cover member has to be sewn on the skin material, and the sewing structure is complicated and man-hours have increased. As a result, the production cost was high.
The present invention has been made in view of the above circumstances, and the purpose of the present invention is to allow the seated person (occupant) to move from the right seat to the left seat in the vehicle or vice versa, or when the seated person's buttocks The buckle of the seat belt that prevents the buckle from coming into contact with the thigh, avoids the presence of a pressure mark due to the buckle on the seat back, simplifies the attachment structure of the buckle, and reduces the production cost. Is to provide a storage structure.

The feature of the present invention is that
A buckle storage part with an open top is formed on the seat cushion,
A seat belt buckle storage structure in which a seat belt buckle is stored in the buckle storage portion,
The upper end of the buckle in the state of being stored in the buckle storage portion is located below the upper surface of the seat cushion. (Claim 1)

According to said structure, since the upper end of the said buckle in the state accommodated in the said buckle accommodating part is located below the upper surface of the said seat cushion, a seated person (occupant) is a right seat from a right seat in a vehicle. In addition, the buckle does not come into contact with the buttocks and thighs of the seated person when moving or sitting on the contrary.
Further, even if the seat back is configured to be able to fall down to the front side, the buckle does not come into contact with the seat back that has fallen down to the front side, and no pressure marks due to the buckle remain on the seat back.
Further, it is not necessary to provide a buckle retracting mechanism on the buckle, and the buckle mounting structure can be simplified as compared with a retractable structure buckle.
Furthermore, it is not necessary to sew the cover member or the like on the skin material, the sewing structure can be simplified, and the manufacturing cost can be reduced by suppressing an increase in the number of sewing steps. (Claim 1)

In the present invention,
A first buckle support portion for receiving and supporting one side portion of the buckle in a direction corresponding to a width direction of the webbing of the seat belt is formed on an inner peripheral portion of the buckle housing portion;
A tongue receiving portion for receiving a tongue of the seat belt connected to the buckle is formed on the seat cushion,
A receiving surface for receiving the tongue is formed in the tongue receiving portion,
The receiving surface is formed in a stepped surface with respect to the buckle support surface of the first buckle support portion, and is a side corresponding to the outer side in the width direction of the webbing with respect to the buckle support surface of the first buckle support portion. If it is located, the following effects can be achieved. (Claim 2)

The buckle is stored in the buckle storage part, and one side of the buckle in the direction corresponding to the width direction of the webbing (band) of the seat belt is received by the first buckle support part formed on the inner peripheral part of the buckle storage part Supported.
Since the seat belt tongue has a slit through which the seat belt webbing is inserted, the tongue portion where the slit is formed is wider than the tip of the tongue (inserted portion inserted into the buckle) or the buckle. Is formed. Therefore, in a state where the tongue is inserted and connected to the buckle, the tongue portion protrudes in the width direction (direction corresponding to the width direction of the webbing) from the buckle.
According to the above configuration of the present invention, the tongue receiving portion that receives the tongue of the seat belt connected to the buckle is formed in the seat cushion, and the receiving surface of the tongue receiving portion is a step with respect to the buckle supporting surface of the first buckle supporting portion. Since it is formed in a planar shape and is located on the side corresponding to the outer side in the width direction of the webbing from the buckle support surface of the first buckle support portion, it avoids interference between the seat cushion and the tongue, and the buckle storage portion While keeping the required minimum capacity, it is possible to improve the wearability of the tongue.
Further, since one side portion of the buckle is received by the buckle support surface of the first buckle support portion, it is possible to eliminate a gap between the seat cushion and the buckle, and to prevent an object from falling under the seat cushion. .
In addition, the buckle support surface of the first buckle support portion receives and supports one side portion of the buckle, so that the buckle can be fixed at the use position in a state of being connected to the tongue, and the seat belt can be more easily mounted. be able to. (Claim 2)

In the present invention,
The first buckle support part is formed on a cushion pad of the seat cushion, and the buckle support surface of the first buckle support part is covered with a skin material,
The tongue receiving portion is formed on the cushion pad, and the receiving surface is covered with the skin material,
The skin material is stretched over the cushion pad in a state of being lifted from the receiving surface to the upper surface of the cushion pad and the buckle supporting surface of the first buckle supporting portion,
As the tongue of the seat belt enters the tongue receiving portion, the following effect can be obtained when the skin material is pressed by the tongue and dented to the receiving surface side. (Claim 3)

  The skin material is stretched over the cushion pad and the buckle support surface of the first buckle support portion so as to be lifted from the receiving surface. It is possible to obtain a natural appearance by making the dent of the buckle housing portion in a state where the stub is not inserted as small as possible. Then, as the tongue of the seat belt enters the tongue receiving portion, the skin material is pressed by the tongue and recessed toward the receiving surface, so that the tongue can be smoothly received in the tongue receiving portion. (Claim 3)

In the present invention,
The cushion pad of the seat cushion is configured in a multilayer structure including a first pad on the front side and a second pad on the back side that is harder than the first pad,
The first buckle support part and the tongue receiving part are formed on the first pad,
A second buckle support part for supporting the buckle via the first buckle support part is formed on the second pad on the back side of the first buckle support part,
When the buckle support surface of the second buckle support portion is close to the buckle support surface of the first buckle support portion so that bending of the first buckle support portion due to a load from the buckle is suppressed, The effect | action can be show | played. (Claim 4)

  The second pad of the second pad, which is harder than the first pad, is bent by the load from the buckle when the first buckle support portion of the first pad, which is relatively soft so as to ensure cushioning at the time of sitting. It can be suppressed by the buckle support. Thereby, a buckle can be firmly supported by the 1st buckle support part and the 2nd buckle support part. (Claim 4)

In the present invention,
When the second pad is kept away from the tongue receiving portion so as not to prevent the bending of the tongue receiving portion due to a load from the tongue of the seat belt, the following effect can be obtained. (Claim 5)

  Since the second pad is kept away from the tongue receiving portion so as not to prevent the tongue receiving portion from being bent by a load from the tongue of the seat belt, the tongue receiving portion receiving the load from the tongue is sufficiently provided. The skin material can be expanded and contracted more naturally. (Claim 5)

In the present invention,
When the buckle support surface of the first buckle support portion, the buckle support surface of the second buckle support portion, and the receiving surface of the tongue receiving portion are respectively formed on inclined surfaces that are positioned higher toward the front side of the seat, The effect | action can be show | played. (Claim 6)

  The buckle can be set to a forwardly inclined posture, and the tongue of the seat belt can be smoothly connected to the buckle. (Claim 6)

In the present invention,
An end on the back side of the buckle is connected to the vehicle body via a buckle support member so as to be swingable about an axis along a direction orthogonal to the width direction of the webbing,
The inclination angle of the first buckle support portion with respect to the horizontal direction of the buckle support surface is set to be larger than the inclination angle of the second buckle support portion with respect to the horizontal direction of the buckle support surface, so that the thickness of the first buckle support portion is increased. However, if the opening side of the buckle storage part is set thicker in the axial direction of the buckle storage part, the following effects can be obtained. (Claim 7)

The back end of the buckle is connected to the vehicle body via a buckle support member so as to be swingable about an axis along a direction perpendicular to the width direction of the webbing. It can be made to follow according to thickness and seat height, and a seat belt can be routed according to a crew member's body.
In addition, an inclination angle of the buckle support surface of the first buckle support portion with respect to the horizontal direction is set to be larger than an inclination angle of the buckle support surface of the second buckle support portion with respect to the horizontal direction of the first buckle support portion. Since the wall thickness is set to be thicker toward the opening side of the buckle housing portion in the axial center direction of the buckle housing portion, the rocking end portion side of the buckle is the rear end at the first buckle support portion of the first pad. It can be supported softer than the part.
Thereby, the seat belt can be made to follow more easily according to the thickness and the seat height of the occupant's body, and the seat belt can be easily routed according to the occupant's body. (Claim 7)

According to the present invention,
When the occupant (occupant) moves from the right seat to the left seat in the vehicle or vice versa, the buckle does not come into contact with the buttocks or thighs of the seat occupant, and the seat back is pressed by the buckle. Therefore, it is possible to provide a seat belt buckle storage structure that can avoid the remaining of the belt, simplify the buckle mounting structure, and reduce the manufacturing cost.

Exploded perspective view of automotive seat Perspective view showing tongue and buckle of seat belt Sectional view of the seat with the seat back lying on the front side of the seat Sectional view of seat belt buckle storage structure Cross section of seat cushion before buckle assembly Sectional view of the seat cushion after the buckle is assembled Sectional view of the seat cushion with the seat belt tongue connected to the buckle Perspective view of buckle storage

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows a two-seat rear seat 1 for an automobile. The rear seat 1 includes a seat cushion 2 that supports the buttocks and thighs of the seated person, a seat back 3 that supports the upper limbs, and a headrest.

  The seat cushion 2 includes a seat frame, a seat cushion pad 4 supported by the seat frame (corresponding to the cushion pad of the seat cushion, see FIG. 3), and a skin material 5 that covers the seat cushion pad 4. Includes a seat frame, a seat back pad supported by the seat frame, and a skin material covering the seat back pad. The seat back 3 is configured to be swingable around the lower horizontal axis, and as shown in FIG. 3, the seat back 3 falls on the seat front side Fr (vehicle front side Fr) and overlaps the seat cushion 2, thereby The rear luggage compartment behind the back 3 is expanded to the vehicle front side Fr.

  As shown in FIGS. 3 and 4, the seat cushion pad 4 has a two-layer structure (a multi-layer structure) including a first pad 6 on the front side and a second pad 7 on the back side that is harder than the first pad 6. Equivalent). The first pad 6 covers a surface other than the lower surface of the second pad 7. The second pad 7 is provided with a plurality of square holes 8 that are open on the lower side so as to reduce the weight of the second pad 7.

  As shown in FIG. 1 to FIG. 3 and FIG. 8, a buckle storage portion 9 having a rectangular cross-sectional shape with an open upper side is formed in the left and right central portion of the rear end portion of the seat cushion 2. A pair of left and right buckles 10 of the belt 11 are accommodated. As shown in FIG. 4, the upper end 10J of the buckle 10 in the state of being accommodated in the buckle accommodating portion 9 is located below the upper surface 2J of the seat cushion 2 (more specifically, below the upper surface of the first pad 6). Yes. As will be described later, the buckle 10 is housed in the buckle housing portion 9 so as to be inclined forward and the corners in the seat rearward direction Rr (vehicle rear side Rr) of the upper corners of the buckle 10 are It becomes the upper end 10J.

  The left buckle 10 is a left seat buckle 10, and the right buckle 10 is a right seat buckle 10. According to the storage structure of the buckle of the seat belt 11 described above, for example, compared to the structure in which the buckle 10 is connected to the other end of the short webbing 12 whose one end is fixed to the seat cushion 2, the buckle 10 in a fixed position is provided. Has an advantage in that the tongue 13 of the seat belt 11 can be easily connected to the buckle 10.

[Structure of seat belt 11]
As shown in FIG. 1, the seat belt 11 includes a webbing 12 connected to a retractor (not shown), and a plate-like tongue 13 slidably inserted in a longitudinal intermediate portion of the webbing 12. Yes. As shown in FIG. 2, the tongue 13 includes a ring portion 14 formed with a slit 14 </ b> S through which the webbing 12 is inserted, and an engagement plate 15 that protrudes from the ring portion 14 and engages with the buckle 10. .

  As shown in FIGS. 2, 3 and 4, the buckle 10 is formed in a box shape having a rectangular section with a tongue insertion port 10H at one end in the longitudinal direction, and the end 10A on the back side of the buckle 10 is a buckle support member. 16 is connected to a floor panel (corresponding to a vehicle body, not shown) via a swinging shaft core O along a direction orthogonal to the width direction of the webbing 12. The lower end portion of the buckle support member 16 is fixed to the floor panel. Further, an engaged portion is provided inside the buckle 10, and a square hole-shaped engaging hole 15 </ b> H that engages with the engaged portion is formed in the engaging plate 15 of the tongue 13.

  The ring portion 14 is set wider than the engagement plate 15 and the webbing 12 in a direction corresponding to the width direction of the webbing 12, and the engagement plate 15 is set narrower than the webbing 12.

  When the rear seat 1 is assembled to the vehicle body, the buckle 10 is assembled to the floor panel via the buckle support member 16, and then the seat back 3 is moved around the horizontal axis via a hinge mechanism (which may be a reclining mechanism). It is disposed on a floor panel (not shown) so as to be able to swing, and the seat cushion 2 is inserted between the lower end of the seat back 3 and the floor panel. At that time, the buckle 10 fixed to the floor panel is inserted into the buckle housing 9 at the rear end of the seat cushion 2.

[Structure of buckle storage unit 9]
The buckle storage portion 9 is inclined upward so that the shaft core 9P (see FIG. 5) is positioned upward as the seat front side Fr (vehicle front side Fr), and the width of the buckle storage portion 9 in the left-right direction (seat width) The width of the direction is set to be almost constant.

  And the 1st buckle support part 19 which receives and supports one side part 10S1 of the buckle 10 of the direction corresponding to the width direction of the webbing 12 of the seatbelt 11 is an inner peripheral part of the front side among the inner peripheral parts of the buckle accommodating part 9. Is formed. The buckle support surface 19M of the first buckle support portion 19 is inclined so as to be positioned upward as the seat front side Fr (vehicle front side). Accordingly, the buckle 10 in the state of being stored in the buckle storage portion 9 is set in a posture inclined forward and upward, and the one side portion 10S1 inclined forward and upward is formed on the buckle support surface 19M of the first buckle support portion 19. Overlapping is received and supported.

  As shown in FIGS. 4 and 7, an object is caused to fall between the inner surface 9N of the rear inner peripheral portion of the inner peripheral portion of the buckle storage portion 9 and the other side portion 10S2 of the buckle 10. Since it is difficult, a clearance S is formed, and the buckle 10 is configured to be able to slightly swing around the swing axis O by the clearance S. Although the swing range is slight, it is necessary for the seat belt 11 to follow the thickness and seat height of the occupant and to route the seat belt 11 according to the occupant's body.

  As shown in FIGS. 4 and 7, a tongue receiving portion 18 for receiving the tongue 13 of the seat belt 11 connected to the buckle 10 is formed on the seat cushion 2, and a receiving surface 18M for receiving the tongue 13 is formed on the tongue receiving portion 18. Has been. The receiving surface 18M is formed in a stepped surface shape with respect to the buckle support surface 19M of the first buckle support portion 19, and is more outward in the width direction of the webbing 12 than the buckle support surface 19M of the first buckle support portion 19. Located on the corresponding side. The receiving surface 18M of the tongue receiving portion 18 is inclined so as to be positioned higher toward the seat front side Fr.

  A step portion D between the receiving surface 18M and the buckle support surface 19M of the first buckle support portion 19 is set to follow the shape of the tongue 13. Thereby, the buckle storage part 9 does not spread more than necessary even when the seat belt 11 is worn, and the appearance when the seat belt 11 is worn is not impaired.

  The first buckle support portion 19 and the tongue receiving portion 18 are formed on the first pad 6 of the seat cushion pad 4, and the buckle support surface 19M of the first buckle support portion 19 and the receiving surface 18M of the tongue receiving portion 18 are skin materials. 5 is covered. As shown in FIGS. 3, 5, and 6, the skin material 5 is stretched over the upper surface 4 </ b> J of the seat cushion pad 4 and the buckle support surface 19 </ b> M of the first buckle support portion 19 so as to be lifted from the receiving surface 18 </ b> M. ing. The skin material 5 has a certain degree of elasticity. Then, as the tongue 13 of the seat belt 11 enters the tongue receiving portion 18, the skin material 5 is pressed by the tongue 13 and is recessed toward the receiving surface 18M (see FIG. 7). The skin material 5 recessed to the receiving surface 18M side overlaps the receiving surface 18M.

  As shown in FIGS. 4 and 7, a second buckle support portion 20 that supports the buckle 10 via the first buckle support portion 19 is formed on the second pad 7 on the back side of the first buckle support portion 19. Yes. And the buckle support surface 20M of the 2nd buckle support part 20 adjoins to the buckle support surface 19M of the 1st buckle support part 19 so that the bending of the 1st buckle support part 19 by the load from the buckle 10 is suppressed. Yes. The buckle support surface 20M of the second buckle support portion 20 is inclined so as to be positioned higher toward the seat front side Fr.

  The thickness from the buckle support surface 20M of the second buckle support portion 20 to the buckle support surface 19M of the first buckle support portion 19 (the thickness of the first buckle support portion 19) is determined with the material when the seat cushion pad 4 is formed. By making the thickness sufficient to allow the urethane to spread while foaming, foaming defects such as lack of seat cushion pad 4 can be prevented.

  Since the thickness (this thickness is set to be thicker toward the opening 9K of the buckle housing portion 9 (the upper opening 9K of the buckle housing portion 9) in the axial center direction of the buckle housing portion 9 as described later, the thickness of the thickest portion is set. Is set to be smaller than the width of the buckle 10 in the direction corresponding to the width direction of the webbing 12, and in this embodiment, is set to approximately ½ of the width of the buckle 10 (see FIG. 7).

  The second pad 7 is kept away from the tongue receiving portion 18 so as not to prevent bending of the tongue receiving portion 18 due to a load from the tongue 13 of the seat belt 11. That is, as shown in FIG. 3, the height dimension of the rear half 7 </ b> B of the second pad 7 is set such that the upper surface 7 </ b> J of the second pad 7 is positioned below the tongue receiving part 18. The height dimension of the front half part 7A of the second pad 7 is set longer (higher) than the height dimension of the rear half part 7B.

  As described above, the buckle support surface 19M of the first buckle support portion 19, the buckle support surface 20M of the second buckle support portion 20, and the receiving surface 18M of the tongue receiving portion 18 are respectively positioned above the seat front side Fr. It is formed on an inclined surface. And the inclination angle with respect to the horizontal direction of the buckle support surface 19M of the 1st buckle support part 19 is set larger than the inclination angle with respect to the horizontal direction of the buckle support surface 20M of the said 2nd buckle support part 20, The said 1st buckle The thickness of the support portion 19 is set to be thicker toward the opening 9K side of the buckle housing portion 9 in the axial direction of the buckle housing portion 9.

With the above configuration,
(1) Since the upper end 10J of the buckle 10 stored in the buckle storage portion 9 is located below the upper surface 2J of the seat cushion 2, the seat occupant (occupant) changes from the right seat to the left seat in the vehicle. On the contrary, the buckle 10 does not come into contact with the buttocks or thighs of the seated person when moving or sitting.
Further, the buckle 10 does not come into contact with the seat back 3 that has fallen on the front side Fr of the seat, and the pressure marks due to the buckle 10 do not remain on the seat back 3.
Further, it is not necessary to provide the buckle 10 with a retracting mechanism of the buckle 10, and the attachment structure of the buckle 10 can be simplified as compared with the buckle 10 having a retractable structure.
Furthermore, it is not necessary to sew the cover member or the like on the skin material, the sewing structure can be simplified, and the manufacturing cost can be reduced by suppressing an increase in the number of sewing steps.
(2) The buckle 10 is accommodated in the buckle accommodating portion 9, and one side portion 10 </ b> S <b> 1 of the buckle 10 in the direction corresponding to the width direction of the webbing 12 of the seat belt 11 is formed on the inner peripheral portion of the buckle accommodating portion 9. The first buckle support 19 is received and supported.
Further, a tongue receiving portion 18 for receiving the tongue 13 of the seat belt 11 connected to the buckle 10 is formed on the seat cushion 2, and the receiving surface 18M of the tongue receiving portion 18 is relative to the buckle supporting surface 19M of the first buckle supporting portion 19. The seat cushion 2 and the tongue 13 interfere with each other because it is formed in a stepped surface and is located on the side corresponding to the outer side in the width direction of the webbing 12 with respect to the buckle support surface 19M of the first buckle support portion 19. This makes it possible to improve the mountability of the tongue 13 while suppressing the buckle storage portion 9 to the minimum necessary capacity.
Further, since one side portion 10S1 of the buckle 10 is received by the buckle support surface 19M of the first buckle support portion 19, the gap between the seat cushion 2 and the buckle 10 can be eliminated, and the object under the seat cushion 2 can be eliminated. Falling can be prevented.
In addition, the buckle support surface 19M of the first buckle support portion 19 receives and supports the one side portion 10S1 of the buckle 10, so that the buckle 10 can be fixed at the use position in a state of being engaged with the tongue 13. 11 can be further improved.
(3) Since the skin material 5 is stretched over the upper surface 4J of the seat cushion pad 4 and the buckle support surface 19M of the first buckle support portion 19 in a state of being lifted from the receiving surface 18M, Even in the unmounted state, the dent of the buckle storage portion 9 in a state where the tongue 13 is not inserted can be shown as small as possible to obtain a natural appearance. Then, as the tongue 13 of the seat belt 11 enters the tongue receiving portion 18, the skin material 5 is pressed by the tongue 13 and recessed toward the receiving surface 18 </ b> M, so that the tongue 13 can be smoothly received by the tongue receiving portion 18. it can.
(4) The seat cushion pad 4 is relatively soft so as to ensure cushioning at the time of sitting, but the seat cushion pad 4 is configured in the above-described multi-layer structure, so that the first pad 6 has a first structure. The buckle support portion 19 can be prevented from being bent by the load from the buckle 10 with the second buckle support portion 20 of the second pad 7 on the back side that is harder than the first pad 6. Thereby, the buckle 10 can be firmly supported by the first buckle support part 19 and the second buckle support part 20.
(5) Since the second pad 7 is kept away from the tongue receiving portion 18 so as not to prevent the tongue receiving portion 18 from being bent by the load from the tongue 13 of the seat belt 11, the second pad 7 receives the load from the tongue 13. The tongue receiving portion 18 can be sufficiently bent, and the expansion and contraction of the skin material 5 can be maintained more naturally.
(6) The tongue 13 of the seat belt 11 can be smoothly connected to the buckle 10 by setting the buckle 10 to the forwardly inclined posture.
(7) The back end 10A of the buckle 10 is connected to the floor panel via the buckle support member 16 so as to be swingable around the swing axis O along the direction perpendicular to the width direction of the webbing 12. Therefore, the seat belt 11 can be made to follow according to the thickness and seat height of the occupant's body, and the seat belt 11 can be routed according to the occupant's body.
In addition, an inclination angle of the buckle support surface 19M of the first buckle support portion 19 with respect to the horizontal direction is set to be larger than an inclination angle of the buckle support surface 20M of the second buckle support portion 20 with respect to the horizontal direction, so that the first Since the thickness of the buckle support portion 19 is set to be thicker toward the opening 9K side of the buckle storage portion 9 in the axial center direction of the buckle storage portion 9, the buckle 10 is formed by the first buckle support portion 19 of the first pad 6. Can be supported softer than the rear end 10A.
Thereby, the seat belt 11 can be made to follow more easily according to the thickness and the sitting height of the occupant's body, and the seat belt 11 can be easily routed according to the occupant's body.

2 Seat cushion 2J Upper surface of seat cushion 4 Seat cushion cushion pad (seat cushion pad)
4J Upper surface 5 of cushion pad 6 Skin material 6 1st pad 7 2nd pad 9 Buckle storage part 9K Opening 10 of buckle storage part 10A Buckle back end 10J Buckle top end 10S1 Buckle one side part 11 Seat belt 12 Webbing 13 Seat belt tongue 16 Buckle support member 18 Tongue receiving part 18M Receiving surface 19 First buckle supporting part 19M Buckle supporting surface 20 of first buckle supporting part 2nd buckle supporting part 20M Buckle supporting surface Fr of second buckle supporting part Seat front side

Claims (7)

A buckle storage part with an open top is formed on the seat cushion,
A seat belt buckle storage structure in which a seat belt buckle is stored in the buckle storage portion,
A seat belt buckle housing structure in which the upper end of the buckle in the state of being housed in the buckle housing portion is located below the upper surface of the seat cushion. A first buckle support portion for receiving and supporting one side portion of the buckle in a direction corresponding to a width direction of the webbing of the seat belt is formed on an inner peripheral portion of the buckle housing portion;
A tongue receiving portion for receiving a tongue of the seat belt connected to the buckle is formed on the seat cushion,
A receiving surface for receiving the tongue is formed in the tongue receiving portion,
The receiving surface is formed in a stepped surface with respect to the buckle support surface of the first buckle support portion, and is a side corresponding to the outer side in the width direction of the webbing with respect to the buckle support surface of the first buckle support portion. The seatbelt buckle storage structure according to claim 1, which is located at The first buckle support part is formed on a cushion pad of the seat cushion, and the buckle support surface of the first buckle support part is covered with a skin material,
The tongue receiving portion is formed on the cushion pad, and the receiving surface is covered with the skin material,
The skin material is stretched over the cushion pad in a state of being lifted from the receiving surface to the upper surface of the cushion pad and the buckle supporting surface of the first buckle supporting portion,
The seatbelt buckle storage structure according to claim 2, wherein the skin material is depressed by the tongue by being pressed by the tongue as the tongue of the seatbelt enters the tongue receiving portion. The cushion pad of the seat cushion is configured in a multilayer structure including a first pad on the front side and a second pad on the back side that is harder than the first pad,
The first buckle support part and the tongue receiving part are formed on the first pad,
A second buckle support part for supporting the buckle via the first buckle support part is formed on the second pad on the back side of the first buckle support part,
The buckle support surface of the second buckle support portion is close to the buckle support surface of the first buckle support portion so that bending of the first buckle support portion due to a load from the buckle is suppressed. Or a seat belt buckle storage structure described in 3;   5. The seat belt buckle storage structure according to claim 4, wherein the second pad is kept away from the tongue receiving portion so as not to prevent bending of the tongue receiving portion due to a load from the tongue of the seat belt.   5. The buckle support surface of the first buckle support portion, the buckle support surface of the second buckle support portion, and the receiving surface of the tongue receiving portion are respectively formed on inclined surfaces that are positioned higher toward the front side of the seat. Or a seat belt buckle storage structure according to 5; An end on the back side of the buckle is connected to the vehicle body via a buckle support member so as to be swingable about an axis along a direction orthogonal to the width direction of the webbing,
The inclination angle of the first buckle support portion with respect to the horizontal direction of the buckle support surface is set to be larger than the inclination angle of the second buckle support portion with respect to the horizontal direction of the buckle support surface, so that the thickness of the first buckle support portion is increased. The seat belt buckle storage structure according to claim 6, wherein the buckle storage portion is set to be thicker toward the opening side of the buckle storage portion in the axial direction of the buckle storage portion.

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