JP7225481B2 - Buckle device mounting structure - Google Patents

Description

The present invention relates to a mounting structure for a buckle device.

2. Description of the Related Art In a vehicle such as an automobile, a buckle device that detachably holds a tongue plate of a seat belt is attached to the floor of the vehicle body (see, for example, Patent Document 1). The buckle device described in Patent Document 1 includes an anchor member fixed to a vehicle body floor, an arm having a proximal end portion rotatably supported with respect to a first support portion of the anchor member, and a distal end portion of the arm. and a connected first buckle. The buckle device includes a webbing having a proximal end that is locked to the second support portion of the anchor member, and a second buckle that is connected to the distal end of the webbing. The buckle device also includes a buckle storage member that stores each buckle. The buckle storage member includes a first storage portion that stores the first buckle and a second storage portion that stores the second buckle. An opening for exposing the tip of each buckle is formed on the upper end side of each accommodating portion. Further, an arm insertion hole and a webbing insertion hole through which the arm and webbing connected to each buckle can be inserted are formed at the lower end side of each accommodation portion.

JP-A-2017-35906

By the way, if the buckle device described in Patent Document 1 is applied to a vehicle in which a battery is mounted between the vehicle body floor and the seat cushion, such as a hybrid vehicle having an internal combustion engine and an electric motor as a vehicle drive source, for example, , the following problems may occur. That is, the heat generated as the battery is charged and discharged flows into the vehicle compartment from the arm insertion hole and the webbing insertion hole that open on the lower side of the buckle housing member through the gaps between the respective openings and the buckle. And there is a possibility that the passenger's comfort may be impaired by feeling such heat.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting structure for a buckle device capable of suppressing the inflow of heat into the passenger compartment.

The mounting structure of the buckle device for achieving the above object includes a buckle main body that detachably holds a tongue plate of a seat belt of a vehicle, and a fixing portion that is provided on the base end side of the buckle main body and is fixed to the vehicle body floor. and a boot having a tubular portion for housing the buckle main body by covering the outer periphery of the buckle main body, wherein the buckle main body and the tubular portion are provided above the vehicle floor. In the device attached to the vehicle body by being inserted through the buckle hole, the cylindrical portion has a first opening covering the outer circumference of the buckle body and a second opening located on the opposite side of the first opening. In addition, only the first opening and the second opening are open, and a flange that protrudes toward the outer peripheral side and is in contact with the vehicle body floor is provided on the second opening side of the tubular portion. ing.

According to this configuration, the tubular portion opens only at the first opening covering the outer periphery of the buckle body and the second opening opposite to the first opening. A flange provided on the second opening side of the tubular portion of the boot is in contact with the floor of the vehicle body. Therefore, in a vehicle in which a heat source is arranged below the seat cushion, heat from the heat source is prevented from flowing into the boot. Therefore, the inflow of heat into the passenger compartment can be suppressed.

In the mounting structure of the buckle device described above, it is preferable that the flange has a holding portion that is held between the seat cushion and the vehicle body floor.
For example, when an occupant pulls the buckle body toward the interior of the vehicle when wearing a seatbelt, the boot may be pulled toward the interior of the vehicle and lifted off the floor of the vehicle. In this case, there arises a problem that the heat from the heat source flows into the inside of the boot due to the widening of the gap between the vehicle body floor and the flange.

In this regard, according to the above configuration, since the sandwiched portion of the flange is sandwiched between the seat cushion and the vehicle body floor, it is possible to suppress the lifting of the boot, that is, the widening of the gap between the vehicle floor and the flange.

In the mounting structure of the buckle device described above, it is preferable that the pair of holding portions be provided so as to sandwich the cylindrical portion.
According to this configuration, since the pair of clamping portions of the flange are provided to sandwich the cylindrical portion, it is possible to effectively prevent the boot from rising.

In the mounting structure of the buckle device described above, it is preferable that a surface of the flange facing the fixing portion is provided with a relief recess for releasing the fixing portion.
According to this configuration, since the fixing portion is released by the relief concave portion of the flange, it is possible to suppress deformation of the flange due to the fixing portion being caught between the vehicle body floor and the flange. As a result, it is possible to suppress widening of the gap between the flange and the vehicle body floor due to deformation of the flange. Therefore, it is possible to suppress the inflow of heat from the heat source into the boot while adopting a configuration in which the fixing portion is fixed to the vehicle body floor at a position away from the flange on the outer peripheral side of the flange.

In the mounting structure of the buckle device described above, a battery is mounted between the seat cushion and the vehicle body floor, and the escape recess is located on the side of the flange opposite to the battery with respect to the tubular portion. is preferably provided.

According to this configuration, since the escape recess is provided in the flange at a position away from the battery, it is possible to suppress heat from the battery from flowing into the boot through the escape recess.

ADVANTAGE OF THE INVENTION According to this invention, the inflow of the heat into a vehicle interior can be suppressed.

1 is a perspective view showing a buckle device and a rear seat attached to a vehicle body floor in an embodiment of a buckle device attachment structure; FIG. The perspective view which shows the buckle apparatus of the state attached to the vehicle body floor of the same embodiment. The exploded perspective view which spaces apart the boot of the same embodiment, a buckle apparatus, and a vehicle body floor mutually, and shows it. The perspective view of the boot of the same embodiment. FIG. 2 is a cross-sectional view taken along line 5-5 of FIG. 1; FIG. 2 is a cross-sectional view taken along line 6-6 of FIG. 1;

An embodiment will be described below with reference to FIGS. 1 to 6. FIG.
A vehicle to which the mounting structure of the buckle device of the present embodiment is applied is a hybrid vehicle provided with an internal combustion engine and an electric motor as vehicle drive sources.

Hereinafter, the front-rear direction of the vehicle will be referred to as the front-rear direction L, and the front side and the rear side in the front-rear direction L will simply be referred to as the front side and the rear side. Also, the right side and left side in the vehicle width direction W when viewed from the rear side to the front side will be simply referred to as the right side and the left side.

As shown in FIG. 1, rear seats 50A, 50B and 50C for three persons are assembled to the vehicle body floor 10. As shown in FIG. The rear seats 50A, 50B, and 50C include seat cushions 51A, 51B, and 51C provided above the vehicle body floor 10, a seat back 52 provided upright from rear end portions of the seat cushions 51A, 51B, and 51C, and a seat back 52. It has a headrest 53 attached to its upper end.

As shown in FIGS. 2, 3, and 6, the vehicle body floor 10 is positioned at a flat portion 11 along both the front-rear direction L and the vehicle width direction W, and at the rear of the flat portion 11, and is positioned upward toward the rear. It has an inclined portion 12 inclined so as to

As shown in FIG. 1 , a battery B extending along the vehicle width direction W is mounted between the seat cushions 51A, 51B, 51C and the vehicle body floor 10 .
Two buckle holes 54A and 54B opening into the vehicle interior are provided at intervals in the vehicle width direction W at both side portions in the vehicle width direction W at the rear portion of the seat cushion 51B of the center rear seat 50B.

Of the two buckle holes 54A and 54B, the buckle hole 54A on the right side (left side in FIG. 1) is detachably engaged with the seat belt tongue plate 30 (see FIG. 5) for the right rear seat 50A and the center rear seat 50B. A retaining buckle device 20A, 20B is provided.

The buckle hole 54B on the left side (right side in FIG. 1) is provided with a buckle device 20C that detachably holds the tongue plate 30 of the seat belt for the left rear seat 50C. The battery B is provided on the front side of each buckle device 20A, 20B, 20C.

Since the structure for attaching the buckle devices 20A and 20B to the vehicle body floor 10 and the structure for attaching the buckle device 20C to the vehicle floor 10 are basically the same, the former structure will be described below, and the latter structure will be described. omit the explanation.

As shown in FIG. 3, the buckle devices 20A and 20B include square tube-shaped buckle main bodies 21A and 21B that detachably hold the tongue plate 30, and webbings each having one end connected to the base end side of the buckle main bodies 21A and 21B. 24A, 24B and fixing portions 25A, 25B that are connected to the other ends of the webbings 24A, 24B and fixed to the vehicle body floor 10 are provided.

At the ends of the buckle bodies 21A and 21B, there are provided insertion openings 22A and 22B into which the tongue plate 30 is inserted, and release buttons 23A and 23B for releasing the state of holding the tongue plate 30 by the buckle bodies 21A and 21B. .

As shown in FIGS. 2 and 3, the fixed portions 25A and 25B are flat plate-shaped. The fixed portions 25A and 25B are made of metal plates, for example. The fixed portions 25A and 25B are provided with bolt holes 26A and 26B and webbing holes 27A and 27B. Webbings 24A and 24B are connected to the webbing holes 27A and 27B.

The inclined portion 12 of the vehicle body floor 10 is provided with a mounting hole 13 passing through the inclined portion 12 in the thickness direction. A nut (not shown) is fixed to the lower surface of the inclined portion 12 . A pair of positioning projections 14 extending along the vehicle width direction W are provided on the upper surface of the inclined portion 12 , positioned above and below the mounting hole 13 .

The bolt holes 26A and 26B and the mounting hole 13 are opened in a state in which the fixing portion 25B is brought into contact with the upper surface of the inclined portion 12 between the pair of positioning protrusions 14 and the fixing portion 25A is superimposed on the upper surface of the fixing portion 25B. A bolt 71 is inserted through and is screwed into the nut. Here, the fixing portion 25B is positioned by the pair of positioning protrusions 14. As shown in FIG. A pair of protrusions 28 provided on the fixed portion 25B prevent rotation of the fixed portion 25A with respect to the fixed portion 25B.

As shown in FIGS. 2 to 6, a flexible material is formed between the vehicle body floor 10 and the seat cushion 51B to cover the outer circumference of the buckle bodies 21A and 21B to accommodate the buckle bodies 21A and 21B. A boot 40 having a tubular portion 41 is provided. The boot 40 is integrally molded, for example, from thermoplastic elastomers (TPE).

The cylindrical portion 41 has two first openings 42a and 42b that individually cover the outer circumferences of the buckle bodies 21A and 21B, and one second opening 43 located on the opposite side of the first openings 42a and 42b. are doing. The cylindrical portion 41 is open only at the first openings 42 a and 42 b and the second opening 43 .

A flange 44 that protrudes toward the outer peripheral side and contacts the flat portion 11 and the inclined portion 12 of the vehicle body floor 10 is provided on the side of the second opening 43 of the cylindrical portion 41 .
A plurality of ribs 45a extending over the front surface of the cylindrical portion 41 and the upper surface of the flange 44 are provided at intervals in the vehicle width direction W on the front portion of the boot 40 .

A plurality of ribs 45b extending over the side surface of the tubular portion 41 and the upper surface of the flange 44 are provided at intervals in the front-rear direction L on the side portion of the boot 40 .
As shown in FIGS. 4 and 5, a pair of clamping portions 44a and 44b clamped between the seat cushion 51B and the vehicle body floor 10 are provided at a portion of the flange 44 that clamps the cylindrical portion 41 in the vehicle width direction W. ing.

As shown in FIGS. 2 to 4, the bolt holes 26A and 26B of the fixed portions 25A and 25B are positioned away from the flange 44 on the outer peripheral side thereof. The fixed portions 25A and 25B are located on the side opposite to the battery B with respect to the tubular portion 41, that is, on the rear side.

A surface of the flange 44 facing the fixed portion 25A is provided with a relief recess 46 for releasing the fixed portions 25A and 25B. Therefore, the escape recess 46 is formed on the side of the flange 44 opposite to the battery B with respect to the tubular portion 41 .

A cutout portion 47 is provided at the rear of the cylindrical portion 41 by cutting out a portion of the flange 44 . Wire harnesses 72A and 72B extending from the respective buckle devices 20A and 20B are pulled out rearward of the boot 40 through the notch 47. As shown in FIG.

As shown in FIG. 2, the edge of the notch 47 is provided with a support piece 48 extending rearward. The wire harnesses 72A and 72B are tape-wound (not shown) around the support piece 48 .

6, when the seat cushion 51B is not assembled to the vehicle floor 10, substantially the entire front portion 44c of the flange 44 contacts the flat portion 11 of the vehicle floor 10. It is At this time, the rear portion 44 d of the flange 44 is separated from the vehicle body floor 10 . Further, the cylindrical portion 41 is inclined so that the tip thereof is located on the front side.

6, the buckle bodies 21A and 21B and the tubular portion 41 are inserted from below into the buckle holes 54A and 54B of the seat cushion 51B, and the seat cushion 51B is placed on the vehicle body floor 10. By being assembled, the buckle devices 20A, 20B and the boot 40 stand up as indicated by solid lines in the figure. Further, the rear portion 44 d of the flange 44 abuts on the inclined portion 12 of the vehicle body floor 10 , and the base end portion of the front portion 44 c abuts on the flat portion 11 of the vehicle floor 10 .

Next, the effects of this embodiment will be described.
(1) In the buckle devices 20A and 20B, the buckle bodies 21A and 21B and the tubular portion 41 of the boot 40 covering the outer circumference of the buckle bodies 21A and 21B are inserted into the buckle hole 54A of the seat cushion 51B provided above the vehicle body floor 10. It is attached to the vehicle body by being done. The cylindrical portion 41 has first openings 42a and 42b covering the outer circumferences of the buckle bodies 21A and 21B, and a second opening 43 located opposite to the first openings 42a and 42b. and the second opening 43 only. A flange 44 that protrudes toward the outer peripheral side and contacts the vehicle body floor 10 is provided on the second opening 43 side of the cylindrical portion 41 .

According to such a configuration, the cylindrical portion 41 opens only at the first openings 42a and 42b covering the outer circumferences of the buckle bodies 21A and 21B and the second opening 43 opposite to the first openings 42a and 42b. . A flange 44 provided on the side of the second opening 43 of the cylindrical portion 41 of the boot 40 abuts the vehicle body floor 10 . Therefore, in a vehicle in which the battery B is arranged below the seat cushions 51A, 51B, 51C, heat from the battery B is prevented from flowing into the boot 40 . Therefore, the inflow of heat into the passenger compartment can be suppressed.

(2) The flange 44 has holding portions 44a and 44b that are held between the seat cushion 51B and the vehicle body floor 10. As shown in FIG.
For example, when an occupant pulls the buckle bodies 21A and 21B toward the interior of the vehicle when wearing a seatbelt, the boot 40 may be pulled toward the interior of the vehicle and lifted off the floor 10 of the vehicle. In this case, the gap between the vehicle body floor 10 and the flange 44 widens, causing a problem that heat from the battery B flows into the boot 40 .

In this respect, according to the above configuration, since the holding portions 44a and 44b of the flange 44 are held between the seat cushion 51B and the vehicle body floor 10, the boot 40 rises, that is, the gap between the vehicle body floor 10 and the flange 44 widens. can be suppressed.

(3) A pair of clamping portions 44a and 44b are provided with the tubular portion 41 interposed therebetween.
According to such a configuration, since the pair of clamping portions 44a and 44b of the flange 44 are provided with the cylindrical portion 41 interposed therebetween, lifting of the boot 40 can be effectively suppressed.

(4) The fixed portions 25A and 25B are fixed to the vehicle body floor 10 at a position away from the flange 44 on the outer peripheral side of the flange 44. An escaping recess 46 is provided for escaping 25A and 25B.

If the fixing portions 25A and 25B are entirely covered with the flanges 44, the flanges 44 will interfere with fixing the fixing portions 25A and 25B to the vehicle body floor 10, making the work complicated.

In this respect, according to the above configuration, the fixed portions 25A and 25B are fixed to the vehicle body floor 10 at a position apart from the flange 44 on the outer peripheral side of the flange 44, so the flange 44 is less likely to interfere and the fixing work is facilitated. can be done.

Moreover, according to the above configuration, since the fixing portions 25A and 25B are released by the escape recess 46 of the flange 44, the fixing portions 25A and 25B are sandwiched between the vehicle body floor 10 and the flange 44, and the flange 44 is deformed. can be suppressed. As a result, widening of the gap between the flange 44 and the vehicle body floor 10 due to deformation of the flange 44 can be suppressed. Therefore, it is possible to prevent heat from the battery B from flowing into the boot 40 while adopting a configuration in which the fixed portions 25A and 25B are fixed to the vehicle body floor 10 on the outside of the flange 44 .

(5) A battery B is mounted between the seat cushions 51A, 51B, 51C and the vehicle body floor 10 . The escape recess 46 is provided on the side of the flange 44 opposite to the battery B with respect to the cylindrical portion 41 .

According to such a configuration, the escape recess 46 is provided at a position apart from the battery B in the flange 44 , so that the heat from the battery B can be suppressed from flowing into the boot 40 through the escape recess 46 .

<Change example>
For example, the above-described embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

- In the case of a buckle device in which the wire harnesses 72A and 72B are not provided, the notch 47 of the flange 44 and the support piece 48 may be omitted.
- The position of the escape recess 46 may be changed as appropriate according to the positions of the fixing portions 25A and 25B.

- The escape recess 46 can be omitted.
In the above-described embodiment, the pair of clamping portions 44a and 44b are provided at portions sandwiching the tubular portion 41 in the vehicle width direction W. can be

- The clamping part is not limited to a pair provided with the cylindrical part 41 interposed therebetween, and may be provided only on one side of the cylindrical part.
- The front part 44c of the flange 44 can be omitted.

- The flange 44 may be formed of a member separate from the tubular portion 41 and assembled to the tubular portion 41 .
- The mounting structure of the buckle device according to the present invention can also be applied to vehicles other than hybrid vehicles.

DESCRIPTION OF SYMBOLS 10... Vehicle body floor 11... Flat part 12... Inclined part 13... Mounting hole 14... Positioning protrusion 20A, 20B... Buckle device 21A, 21B... Buckle main body 23A, 23B... Release button, 24A, 24B Webbing 25A, 25B Fixed portion 26A, 26B Bolt hole 27A, 27B Webbing hole 28 Projection 30 Tang plate 40 Boot 41 Cylindrical portion 42a, 42b First opening, 43... Second opening 44... Flange 44a, 44b... Clamping part 44c... Front part 44d... Rear part 45a, 45b... Rib 46... Relief recess 47... Notch 48... Support piece 50A, 50B , 50C... rear seat, 51A, 51B, 51C... seat cushion, 52... seat back, 53... headrest, 54A, 54B... buckle hole, 71... bolt, 72A, 72B... wire harness, B... battery.

Claims (6)

A buckle device including a buckle body for detachably holding a tongue plate of a seat belt of a vehicle, a fixing portion provided on the base end side of the buckle body and fixed to a vehicle body floor, and covering the outer circumference of the buckle body. and a boot having a tubular portion that accommodates the buckle main body, wherein the buckle main body and the tubular portion are attached to the vehicle body by inserting the buckle main body and the tubular portion into a buckle hole of a seat cushion provided above the vehicle floor. In the mounting structure of
The cylindrical portion has a first opening that covers the outer circumference of the buckle body and a second opening located on the opposite side of the first opening, and is open only at the first opening and the second opening. and
A flange that protrudes toward the outer peripheral side and contacts the vehicle body floor is provided on the second opening side of the tubular portion,
The flange has a holding portion that is held between the seat cushion and the vehicle body floor,
Attachment structure of the buckle device. A pair of said clamping portions are provided with said cylinder portion sandwiched therebetween,
The attachment structure of the buckle device according to claim 1. A relief recess for releasing the fixed portion is provided on a surface of the flange facing the fixed portion,
The attachment structure of the buckle device according to claim 1 or 2. A battery is mounted between the seat cushion and the vehicle body floor,
The escape recess is provided on the side of the flange opposite to the battery with respect to the cylindrical portion,
The attachment structure of the buckle device according to claim 3. A buckle device including a buckle body for detachably holding a tongue plate of a seat belt of a vehicle, a fixing portion provided on the base end side of the buckle body and fixed to a vehicle body floor, and covering the outer circumference of the buckle body. and a boot having a tubular portion that accommodates the buckle main body, wherein the buckle main body and the tubular portion are attached to the vehicle body by inserting the buckle main body and the tubular portion into a buckle hole of a seat cushion provided above the vehicle floor. In the mounting structure of
The cylindrical portion has a first opening that covers the outer circumference of the buckle body and a second opening located on the opposite side of the first opening, and is open only at the first opening and the second opening. and
A flange that protrudes toward the outer peripheral side and contacts the vehicle body floor is provided on the second opening side of the tubular portion,
A relief recess for releasing the fixed portion is provided on a surface of the flange facing the fixed portion,
The mounting structure of the buckle device. A battery is mounted between the seat cushion and the vehicle body floor,
The escape recess is provided on the side of the flange opposite to the battery with respect to the cylindrical portion,
The attachment structure of the buckle device according to claim 5.

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