JP2013230754A - Buckle storage structure of vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a buckle storage structure of a vehicle seat that can prevent a buckle body from falling to a lateral direction; can evade the buckle body from placed between a seat cushion pad and a seat back pad, can prevent a deformation trace from remaining in the seat cushion pad and the seat back pad and can evade the decrease in the appearance.SOLUTION: A buckle body 11 and a buckle 10 that includes a webbing of which one end part is coupled with a base end part of the buckle body 11 are stored in a buckle housing 8 formed in the vehicle seat, and the buckle housing 8 is formed continuously in the rear end of the seat cushion 2 and the lower end of seat back 3. A buckle support piece 20 that supports the buckle body 11 from the side is rising from both sides part of the opening peripheral edge of the buckle housing 8 and the buckle support piece 20 have been installed continuously from the rear end of the seat cushion 2 over the lower end of the seat back 3.

Description

The present invention
The present invention relates to a buckle housing structure for a vehicle seat that houses a buckle including a buckle body and a webbing having one end connected to a base end portion of the buckle body in a buckle housing portion formed on the vehicle seat.

Conventionally, there has been a structure disclosed in Patent Document 1 as a buckle housing structure for a vehicle seat.
In this structure, the lower end portions of the side surfaces facing each other of the pair of left and right seat backs are recessed in the direction in which both side surfaces are separated (in the seat width direction of the respective seat backs) to form a recess between both side surfaces. . In addition, a resin partition wall that divides the concave portion into a left concave portion and a right concave portion is erected at the left and right center of the concave portion, and one buckle body is accommodated in the left concave portion, and another buckle main body is accommodated in the right concave portion. It is stored. The buckle body is elastically held between the seat back and the partition wall.

JP 2006-88743 A

According to the above-described conventional structure, when the buckle body protrudes to the front side of the seat from the seat back, there is no support for the buckle body, and the buckle body is tilted in the lateral direction (seat width direction, left-right direction). It was.
In the structure in which the seat back can be moved forward, the buckle body is sandwiched between the seat cushion and the seat back when the seat back is moved forward and stacked on the seat cushion while the buckle body is tilted sideways.
As a result, the seat cushion pad and the seat back pad were deformed, and deformation marks remained and the appearance of the seat cushion and the seat back was deteriorated.
The object of the present invention is to prevent the buckle body from falling down in the lateral direction even when the buckle body stands up along the seat back, even when the buckle body protrudes to the front side of the seat, When the seat back can be moved forward, the buckle body can be prevented from being caught between the seat cushion pad and the seat back pad, and deformation marks can be prevented from remaining on the seat cushion pad and the seat back pad. The object is to provide a buckle housing structure for a vehicle seat that can prevent a reduction in the appearance of the back.

The feature of the present invention is that
A buckle housing structure for a vehicle seat that houses a buckle comprising a buckle body and a webbing having one end connected to a base end portion of the buckle body in a buckle housing portion formed on the vehicle seat,
The buckle storage portion is formed continuously from the rear end portion of the seat cushion and the lower end portion of the seat back,
Buckle support pieces for supporting the buckle body protruding from the buckle storage part from the side rise from both sides of the opening peripheral part of the buckle storage part,
The said buckle support piece exists in the point provided continuously from the rear-end part of the said seat cushion to the lower end part of the said seat back. (Claim 1)

According to this configuration, the buckle support piece is continuously provided from the rear end portion of the seat cushion to the lower end portion of the seat back. Therefore, the buckle body can be supported from the side by both buckle support pieces not only in the state where the buckle body stands up along the seatback but also in the state of protruding forward of the seat from the seatback. And the buckle body can be prevented from falling laterally.
As a result, when the seat back can be moved forward, the buckle body can be prevented from being sandwiched between the seat cushion pad and the seat back pad, and deformation marks can be prevented from remaining on the seat cushion pad and the seat back pad. Deterioration of the appearance of the cushion and seat back can be avoided. (Claim 1)

In the present invention,
When the buckle support piece includes a resin-made core material and a skin material that covers the core material, the following effects can be achieved. (Claim 2)

  By improving the rigidity of the buckle support piece, the buckle support piece can be more reliably prevented from falling or deforming. (Claim 2)

In the present invention,
When the core material of the buckle support piece and the upper end portions of the skin material are sewn together, the following effects can be achieved. (Claim 3)

  The core material can be prevented from shifting with respect to the skin material of the buckle support piece, and the durability of the buckle support piece can be improved. (Claim 3)

In the present invention,
When the skin material of the buckle support piece is made of the same material as the skin material of the seat cushion or the skin material of the seat back, the following effects can be achieved. (Claim 4)

  A natural appearance can be maintained even if the buckle support piece protrudes above the seat cushion seat surface. (Claim 4)

In the present invention,
When the outer peripheral edge of the buckle support piece is located closer to the base end portion of the buckle body than the front end surface of the buckle body supported by the buckle support piece, the following action can be achieved. (Claim 5)

  With the above configuration, the tip (top) of the buckle main body protrudes from the outer peripheral edge of the buckle support piece. Therefore, the occupant can be prevented from interfering with the buckle support piece when fitting the tongue of the seat belt device to the buckle body, and the tongue can be easily fitted to the buckle body. As a result, it is possible to improve the mounting property of the seat belt device. (Claim 5)

In the present invention,
The other end of the webbing is connected to an anchor plate;
The buckle body is configured to be swingable in the seat front-rear direction around a connection portion between the anchor plate and the other end of the webbing,
When the outer peripheral edge of the buckle support piece is formed in an arc shape along the swing locus of the apex of the buckle body, the following action can be achieved. (Claim 6)

In a state where the occupant (seats) has fitted the tongue to the buckle body and attached the seat belt, the buckle body follows the movement of the occupant and moves in the seat front-rear direction and the side. When the buckle body moves in the front-rear direction of the seat, the buckle body swings in the front-rear direction of the seat around the connecting portion between the anchor plate and the other end of the webbing. At this time, the pair of left and right buckle support pieces guide while supporting the buckle body.
According to the above configuration of the present invention, since the outer peripheral edge of the buckle support piece is formed in an arc shape along the swing locus of the apex of the buckle body, a minimum guide space can be secured. The amount of the skin material used for the support piece can be minimized. (Claim 6)

In the present invention,
When the rear end portion of the buckle support piece enters the buckle housing portion at the lower end portion of the seat back, the following effects can be achieved. (Claim 7)

  Since the buckle support piece is supported by the seat back, the buckle support piece can be more unlikely to fall in the lateral direction. (Claim 7)

According to the present invention,
Not only can the buckle body stand up along the seatback, but it can also prevent the buckle body from falling in the lateral direction even if it protrudes forward from the seatback. In the case of the structure, the buckle body can be prevented from being sandwiched between the seat cushion pad and the seat back pad, the deformation mark can be prevented from remaining on the seat cushion pad and the seat back pad, and the appearance of the seat cushion and the seat back can be reduced. A vehicle seat buckle storage structure that can be avoided can be provided.

Front view of vehicle seat (view of vehicle seat from the front side of the vehicle) Enlarged view of part A in FIG. AA sectional view of FIG. Side view of the buckle compartment (A) is a view of the buckle seen from the thickness direction of the buckle body, (b) is a partially cutaway sectional view of the buckle seen from the width direction of the buckle body.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows a rear seat 1 (corresponding to a vehicle seat) for a bench type three-seater vehicle. The rear seat 1 includes a seat cushion 2 that supports the hips and thighs of an occupant (seater) and a seat back 3 that supports the back of the occupant. As shown in FIG. 4, the seat back 3 is configured to be able to tilt forward while rotating about the horizontal axis O on the lower end side with respect to the seat cushion 2. The two-dot chain line in FIG. 4 shows the seat back 3 tilted forward with respect to the seat cushion 2.

  As shown in FIG. 1, a headrest 4 that supports the head of an occupant is connected to the upper ends of the seat backs 3 of the left seat 7, the center seat 6, and the right seat 5. Further, a buckle storage portion 8 for storing the buckle 10 of the seat belt device is provided between the right seat 5 and the central seat 6 and between the left seat 7 and the central seat 6 (the left seat 7 and The buckle storage part between the center seat 6 is not shown). Next, the buckle storage structure of the rear seat 1 will be described in detail.

[Structure of buckle 10]
As shown in FIGS. 5 (a) and 5 (b), the buckle 10 includes a resin buckle body 11, a webbing 12 having one end 12A connected to the base end 11K of the buckle body 11, and a soft resin. The boot buckle type is provided with a boot 13 made of steel.

  The buckle body 11 is formed in a rectangular parallelepiped shape having a width longer than the thickness. And the fitting hole 11H (refer FIG. 1, FIG. 2) which inserts and fits the tongue of a seatbelt apparatus is formed in this buckle main body 11. As shown in FIG. The fitting hole 11 </ b> H opens in the front end surface 11 </ b> J of the buckle body 11. The boot 13 covers the proximal end portion 11 </ b> K and the webbing 12 of the buckle body 11.

[Structure of buckle body 11]
As shown in FIG. 5B, the surface 11M on the front side of the base end portion 11K of the buckle body 11 is closer to the base end surface 11T (surface opposite to the tip end surface 11J) side of the buckle body 11 as the base end portion. It inclines so that it may be located in the 11K back surface 11N side. Moreover, as shown to Fig.5 (a), both the side surfaces 11S of the base end part 11K of the buckle main body 11 are formed in the inclined surface where a mutual space | interval becomes narrow toward the base end surface 11T side. A second webbing insertion hole is formed in the base end portion 11 </ b> K of the buckle body 11.

[Structure of webbing 12 and connection structure of webbing 12]
As shown in FIGS. 5A and 5B, the other end 12B of the webbing 12 is connected to one piece 14A of the anchor plate 14 having an L-shaped cross section. A long web-shaped first webbing insertion hole 14 </ b> H that is long in the width direction of the webbing 12 is formed in one piece 14 </ b> A of the anchor plate 14. The other piece 14B of the anchor plate 14 is fixed to the vehicle body (may be a seat frame).

  The connection structure of the webbing 12 will be described. One end portion 16A of a flexible webbing material 16 such as a fabric is inserted into the first webbing insertion hole 14H of one piece 14A of the anchor plate 14, and the webbing material 16 is folded. Further, one end portion 16A of the webbing material 16 is inserted into the second webbing insertion hole of the base end portion 11K of the buckle body 11 from the direction opposite to the insertion direction to the first webbing insertion hole 14H, and the webbing material 16 is folded back. It is. One end portion 16A of the webbing material 16 overlaps the folded portion of the webbing material 16 on the anchor plate 14, and a total of three overlapping webbing material parts are sewn together. The three webbing material parts are sewn together from one end side in the width direction of the webbing material part to the other end side, and from one end side to the other end side in the longitudinal direction of the webbing material part. Reference numeral 12N indicates the sewing line.

  In this way, one end 12A of the webbing 12 is connected to the base end 11K of the buckle body 11, and the other end 12B of the webbing 12 is connected to one piece 14A of the anchor plate 14. The buckle body 11 is configured to be able to swing in the front-rear direction of the seat around a connecting portion between one piece 14A of the anchor plate 14 and the other end portion 12B of the webbing 12.

[Structure of boot 13]
As shown in FIGS. 5A and 5B, the first wall 13A of the boot 13 corresponding to the front surface 11M of the buckle body 11 and the boot 13 corresponding to the back surface 11N of the buckle body 11 are used. The second wall portion 13B is formed in a trapezoidal shape (see FIG. 5A) that narrows toward the anchor plate 14 side. In addition, both side walls 13S of the boot 13 corresponding to the side surface 11S of the buckle body 11 are formed as inclined walls whose intervals are narrower toward the anchor plate 14 side (see FIG. 5A). The side wall 13S of the boot 13 is substantially along the side surface 11S of the buckle body 11. The end of the boot 13 on the anchor plate 14 side is sewn to the webbing 12. By providing the boot 13 with the buckle 10, the buckle body 11 can stand to some extent.

[Structure of buckle storage unit 8]
As shown in FIGS. 1 and 2, a buckle storage portion 8 for storing the buckle 10 is formed continuously at the rear end portion of the seat cushion 2 and the lower end portion of the seat back 3. Reference numeral 8A in FIG. 1 denotes a front buckle housing portion formed at the rear end portion of the seat cushion 2. The front buckle storage portion 8A is formed long in the front-rear direction of the seat cushion 2 (the seat front-rear direction). Reference numeral 8 </ b> B denotes a rear buckle housing portion formed at the lower end of the seat back 3. The rear buckle storage portion 8B is formed long in the vertical direction of the seat back 3 (the vertical direction of the seat).

[Structure of buckle support piece 20]
As shown in FIGS. 1 and 2, buckle support pieces 20 that support the buckle body 11 protruding from the buckle storage portion 8 from the side (lateral direction) rise from both sides of the peripheral edge of the opening of the buckle storage portion 8. . The buckle support piece 20 is provided continuously from the rear end portion of the seat cushion 2 to the lower end portion of the seat back 3. The buckle support piece 20 rising from the left side of the opening peripheral edge and the buckle support piece 20 rising from the right side of the opening peripheral edge are symmetric with respect to the center in the width direction of the buckle storage part 8 (left-right symmetric). ).

  As shown in FIG. 3, the buckle support piece 20 includes a sheet-like resin core material 25 and an outer skin that covers an outer surface of the core material 25 (a surface facing a direction corresponding to the width direction outer side of the buckle storage portion 8). A material 23 and an inner skin material 24 covering the inner surface of the core material 25 are provided. The upper end portion of the outer skin member 23 is bent toward the core member 25, and the bent upper end portion 23 </ b> J of the outer skin member 23 covers the inner and outer surfaces of the upper end portion 25 </ b> J of the core member 25. The upper end portion of the inner skin material 24 is also bent toward the core material 25, and the bent upper end portion 24 </ b> J of the inner skin material 24 overlaps the bent upper end portion 23 </ b> J of the outer skin material 23. And the upper end part 25J of the core material 25, the bending upper end part 23J of the outer skin material 23, and the bending upper end part 24J of the inner skin material 24 are mutually sewn. Reference numeral L1 denotes the sewing line. Thereby, the core material 25 can be prevented from shifting with respect to the outer skin material 23 and the inner skin material 24, and the durability of the buckle support piece 20 can be improved.

  The outer skin material 23 and the inner skin material 24 of the buckle support piece 20 are made of the same material as the later-described upper skin material 21 and the lower skin material 22 of the seat cushion 2, and the upper skin material 21 and the lower skin material 21. The same color as the material 22 is set. Thereby, even if the buckle support piece 20 protrudes above the seat surface of the seat cushion 2, a natural appearance can be maintained.

  As shown in FIG. 3, the side skin 21 </ b> A on the buckle storage portion 8 side of the upper skin material 21 covering the upper surface of the seat cushion pad 26, and the lower skin covering the lower surface of the seat cushion pad 26 and the inner side surface of the buckle storage portion 8. The lower end portion of the buckle support piece 20 is sandwiched between the upper end portion 22J of the material 22. The seat cushion pad 26 is made of foamed urethane. Then, the side portion 21A of the upper skin material 21, the lower end portion 23K of the outer skin material 23, the lower end portion 25K of the core material 25, the lower end portion 24K of the inner skin material 24, and the lower skin material 22 The bent upper end portion 22J is integrally sewn together. Reference numeral L2 represents the sewing line.

  As shown in FIG. 4, the outer peripheral edge 20 </ b> T of the buckle support piece 20 is located closer to the base end portion 11 </ b> K side of the buckle body 11 than the distal end surface 11 </ b> J (top surface) of the buckle body 11 supported by the buckle support piece 20. ing. In the present embodiment, the length between the outer peripheral edge 20T and the tip surface 11J is about 15 mm (a numerical value other than this value may be used). The outer peripheral edge 20T of the buckle support piece 20 is a peripheral edge of the buckle support piece 20 that is located above the seating surface of the seat cushion 2 and located on the seat front side Fr of the seating surface of the seatback 3.

  As a result, the tip (top) of the buckle body 11 is in a state of protruding from the outer peripheral edge 20T of the buckle support piece 20. Therefore, when the occupant fits the tongue of the seat belt device into the fitting hole 11H of the buckle body 11, the buckle support piece 20 can be prevented from interfering, and the tongue is fitted into the fitting hole 11H of the buckle body 11. It can be made easier. As a result, it is possible to improve the mounting property of the seat belt device.

The outer peripheral edge 20T of the buckle support piece 20 is formed in an arc shape along the swinging locus of the apex of the buckle body 11 (one corner of the front end surface 11J of the buckle body 11). Further, the rear end portion of the buckle support piece 20 enters the buckle storage portion 8 (rear side buckle storage portion portion 8B) at the lower end portion of the seat back 3. In the present embodiment, the rear end portion of the buckle support piece 20 is inserted into the buckle housing portion 8 at the lower end portion of the seat back 3 (which may be a numerical value other than this numerical value).
According to the above configuration, since the buckle body 11 is supported from the side by the pair of left and right buckle support pieces 20, even if the seat back 3 is tilted forward, it does not fall in the lateral direction (seat width direction).

  Further, since the boot 13 is a flexible material with a certain degree of rigidity, the buckle 10 can bend in the lateral direction (seat width direction) so that the seat belt is fitted to the occupant's body. . Although the buckle support piece 20 includes the resin core material 25, the base of the buckle support piece 20 is sewn to the upper skin material 21 and the lower skin material 22 of the seat cushion 2. Therefore, when the pulling force due to the occupant wearing the seat belt is acting on the buckle support piece 20, the buckle support piece 20 moves following the buckle body 11 in the lateral direction (seat width direction). Further, when the occupant is not wearing the seat belt, the buckle support piece 20 can be kept standing. Further, when the seat back 3 is moved forward, the buckle 10 is stored in the buckle storage portion 8 at any position.

According to the present invention,
(1) As shown in FIGS. 2 and 4, the buckle support piece 20 is provided continuously from the rear end portion of the seat cushion 2 to the lower end portion of the seat back 3. Accordingly, not only the buckle body 11 is standing along the seatback 3 but also the state where the buckle body 11 protrudes to the front side Fr of the seatback 3, the buckle body 11 is located on the side with the both buckle support pieces 20. The buckle body 11 can be prevented from falling in the lateral direction. As a result, when the seat back 3 is moved forward, it is possible to avoid the buckle body 11 from being sandwiched between the seat cushion pad 26 and the seat back pad. Accordingly, it is possible to prevent deformation marks from remaining on the seat cushion pad 26 and the seat back pad, and to avoid a decrease in the appearance of the seat cushion 2 and the seat back 3. A symbol Rr in FIG. 2 indicates the seat rear side.

(2) Since the buckle support piece 20 includes the resin core material 25, and the outer skin material 23 and the inner skin material 24 that cover the core material 25, the buckle support piece 20 is improved in rigidity. The buckle support piece 20 can be more reliably prevented from falling or deforming.

(3) In a state where the occupant (seat) has fitted the tongue to the buckle body 11 and mounted the seat belt, the buckle body 11 moves in the front-rear direction and the lateral direction following the movement of the occupant. When the buckle body 11 moves in the front-rear direction of the seat, the buckle body 11 swings in the front-rear direction of the seat with the connecting portion between the anchor plate 14 and the other end portion 12B of the webbing 12 as the rotation center. At this time, the pair of left and right buckle support pieces 20 guide while supporting the buckle body 11.
According to the above configuration of the present invention, the outer peripheral edge 20T of the buckle support piece 20 is formed in an arc shape along the swinging locus of the apex of the buckle body 11, so that a minimum guide space can be ensured. The amount of use of the outer skin material 23 and the inner skin material 24 of the buckle support piece 20 can be minimized.

[Another embodiment]
(1) The outer skin material 23 and the inner skin material 24 of the buckle support piece 20 may be set to materials and colors similar to the upper skin material 21 and the lower skin material 22 that cover the seat cushion pad 26.

(2) The buckle support piece 20 is sewn on the upper skin material 21 and the lower skin material 22 of the seat cushion 2, but may be sewn only on the skin material of the seat back 3. Even with this structure, the same effects as those of the above-described embodiment can be obtained. In this case, when the seat back 3 is moved forward, the front end side of the buckle support piece 20 enters the buckle storage portion 8 along the side wall of the buckle storage portion 8 (front buckle storage portion 8A) of the seat cushion 2. What is necessary is just to comprise.

(3) When the outer skin material 23 and the inner skin material 24 of the buckle support piece 20 are made of a material that can maintain sufficient rigidity, the core material 25 may be omitted.

1 Vehicle seat (rear seat)
2 Seat cushion 3 Seat back 8 Buckle storage part 10 Buckle 11 Buckle body 11J Tip end surface 11K of the buckle body Base end part 12 of the buckle body 12A One end part 12B of the webbing 14 Anchor plate 20 Buckle support piece 20T Buckle Outer peripheral edge 21 of support piece Skin material of seat cushion (upper skin material)
22 Seat cushion skin (lower skin)
23 Skin material covering core material (skin material of buckle support piece, outer skin material)
23J Upper end of the skin covering the core (upper end of the outer skin)
24 Skin material covering core material (skin material of buckle support piece, inner skin material)
24J The upper end of the skin covering the core (the upper end of the inner skin)
25 Core

Claims (7)

A buckle housing structure for a vehicle seat that houses a buckle comprising a buckle body and a webbing having one end connected to a base end portion of the buckle body in a buckle housing portion formed on the vehicle seat,
The buckle storage portion is formed continuously from the rear end portion of the seat cushion and the lower end portion of the seat back,
Buckle support pieces for supporting the buckle body protruding from the buckle storage part from the side rise from both sides of the opening peripheral part of the buckle storage part,
The buckle support structure for a vehicle seat, wherein the buckle support piece is continuously provided from a rear end portion of the seat cushion to a lower end portion of the seat back.   The buckle housing structure for a vehicle seat according to claim 1, wherein the buckle support piece includes a resin core material and a skin material covering the core material.   The buckle storage structure for a vehicle seat according to claim 2, wherein upper ends of the core material and the skin material of the buckle support piece are sewn together.   The buckle storage structure for a vehicle seat according to claim 2 or 3, wherein the skin material of the buckle support piece is made of the same material as the skin material of the seat cushion or the skin material of the seat back.   The outer peripheral edge of the buckle support piece is located on the base end side of the buckle body with respect to the front end surface of the buckle body supported by the buckle support piece. Buckle storage structure for vehicle seats. The other end of the webbing is connected to an anchor plate;
The buckle body is configured to be swingable in the seat front-rear direction around a connection portion between the anchor plate and the other end of the webbing,
The buckle storage structure for a vehicle seat according to any one of claims 1 to 5, wherein an outer peripheral edge of the buckle support piece is formed in an arc shape along a swing locus of a vertex of the buckle body.   The buckle storage structure for a vehicle seat according to any one of claims 1 to 6, wherein a rear end portion of the buckle support piece enters a buckle storage portion at a lower end portion of the seat back.

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