JP2003267185A - Seat belt device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat belt device that enables a seat back to be easily folded to the front by preventing hooking of a webbing on the seat back. <P>SOLUTION: This seat belt device for a vehicle is provided with a retractor 4 provided on a side wall of a vehicle body in a lower part of a rear pillar 3 and winding the webbing 1 and a through ring 5 slidably mounted on the rear pillar 3 and fits the webbing 1 delivered from the retractor 4 on a buckle through the through ring 5. The device is provided with a tilting regulating mechanism 20 provided with a strip-like guide member 21 and a guide pint 22 in a lower part of the guide member 21. The guide member 21 is energized in an arrow A direction by a coil spring. Since stillness for the guide pin 22 is released when the seat back S is brought down to the front, the guide member 21 is rotated in the arrow A direction, a bent piece 21C of an upper part of the guide member 21 presses a side part of the through ring 5, and tilting of a through ring 20 to a rear side of a vehicle is regulated. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seatbelt device, and more particularly to a vehicle seatbelt device provided with a function such as a trunk-through function of tilting a seatback forward.

[0002]

2. Description of the Related Art Conventionally, there has been known a vehicle of a type in which a seat back of a rear seat is tilted forward to allow communication between a passenger compartment and a trunk room. A vehicle of this type can be used as a luggage compartment with the rear part of the passenger compartment communicating with the luggage compartment, and is convenient for carrying long objects that cannot fit in the luggage compartment.

In a vehicle of the above type, a seat belt device for a rear seat is provided with a retractor provided on a side wall of a vehicle body below a rear pillar for winding webbing, and a through ring swingably attached to the rear pillar. The webbing fed from the retractor is attached to the buckle through the through ring.

[0004]

By the way, the side wall surface of the vehicle interior of the rear pillar is covered with a rear pillar garnish made of resin, and the through ring is arranged between the rear pillar and the rear pillar garnish. Therefore, the webbing passed through the through ring is pulled out into the vehicle compartment through the outlet hole formed in the rear pillar garnish.

However, conventionally, the exit hole 2 of the webbing 1 is arranged above the seat back S of the rear seat as shown in FIG. 11, so that the seat back S is tilted forward as shown by the arrow in the figure. Then, as shown in FIG. 12, the webbing 1 hanging from the exit hole 2 is easily caught on the upper end of the seat back S, and if it is caught, the seat back S cannot be tilted forward. .

In order to solve such a problem,
The one described in Japanese Utility Model Laid-Open No. 5-26603 is,
In the device disclosed in this publication, the lateral width of the seat back is limited due to the thick seat catcher on the side portion of the seat back.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat belt device which can prevent the webbing from being caught on the seat back and can easily tilt the seat back forward.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 swings between a retractor provided on a side wall of a vehicle body obliquely rearward of a seat for winding webbing and a pillar obliquely rearward of the seat. In a vehicle seatbelt device including a freely attached through ring, wherein the webbing fed from the retractor is attached to a buckle through the through ring, the vehicle is located behind the through ring when the seat back is tilted forward. It is characterized in that a regulation means for regulating the tilting of the is provided.

According to the above construction, when the seat back is tilted forward, the tilting of the through ring to the rear of the vehicle is restricted by the restricting means, so that the position of the webbing is displaced toward the front of the vehicle near the through ring. As a result, the position of the webbing hanging from the exit hole is slightly separated from the seat back. As a result, the webbing is prevented from being caught on the seat back, and the seat back can be easily tilted forward.

According to a second aspect of the present invention, the regulating means includes a guide pin that moves forward of the vehicle when the seat back is tilted forward and a lower portion of the through ring that accompanies the movement of the guide pin. The vehicle seat belt device according to claim 1, further comprising: a guide stopper that biases the through ring by urging the vehicle forward and holds the tilted state.

With the above arrangement, when the seat back is tilted forward, the fact can be reliably detected by the guide pin. Further, since the lower portion of the through ring is biased and tilted toward the front of the vehicle by the guide stopper and the tilted state is maintained, the position of the webbing near the through ring can be easily displaced forward of the vehicle. Become.

The invention according to claim 3 is the vehicle seat belt device according to claim 2, wherein the guide pin and the guide stopper are integrally formed.

According to the above construction, the movement of the guide pin can be surely transmitted to the guide stopper.

According to a fourth aspect of the present invention, a biasing means for constantly biasing the guide pin toward the front of the vehicle is provided, and when the seat back is tilted forward, the guide pin is biased by the biasing means. The vehicle seat belt device according to claim 2, wherein the vehicle seat belt device is moved forward of the vehicle by the urging force of the vehicle.

According to the above construction, when the seat back is tilted forward, the guide pin is biased by the biasing means to move forward of the vehicle. As this urging means, claim 5
It is desirable to use a spring as in the invention described in 1.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows a vehicle seat belt device according to a first embodiment. (A) is a configuration diagram of a main part of the seat belt device, (b) is a seat belt device (a). It is an external view of the installed rear seat vicinity.

The vehicle seatbelt device according to this embodiment is a three-point seatbelt device and is installed near the seatback S of the rear seat. This seat belt device includes a belt-shaped webbing 1 that is worn by an occupant, a retractor 4 that is provided inside the vehicle body side wall below the rear pillar 3, and that winds up the webbing 1, and a webbing 1 that is swingably attached to the rear pillar 3. It also has a through ring 5.

The webbing 1 is provided with a tongue 6 in the middle of the webbing 1, and its tip end is fixed to the floor of the vehicle body by a fixing metal fitting 7 (see FIG. 7). A buckle 8 (see FIG. 7) is provided on the rear seat.

In the above seat belt device, when the tongue 6 is attached to the buckle 8 while pulling out the webbing 1 from the retractor 4 when the seat belt is worn, the webbing 1 is worn around the waist of the occupant and diagonally from the waist to the shoulder. To be done.

In FIG. 1, 9 is a seat back S.
A back panel 10 provided on the back side of the parcel is a parcel provided from the upper edge of the back panel 9 toward the trunk room side.

Further, a through hole 12 for inserting a guide pin 22 described later is formed in an upper corner portion of the back panel 9.

In this embodiment, the tilt regulating mechanism 20 is provided as a regulating means for regulating the tilting of the through ring 5 to the rear of the vehicle when the seat back S is tilted forward. As shown in FIG. 2 as an exploded perspective view, the tilt restricting mechanism 20 includes a strip-shaped guide member 21 whose lower portion is bent in an L shape and is arranged in a vertical direction, and a portion which is bent in an L shape. A guide focus 22 fixed to the bottom surface and extending toward the front of the vehicle is provided. A bolt hole 21A is formed in the upper portion of the guide member 21.

A bolt 23 is inserted into the bolt hole 21A together with the bolt hole 5A formed in the through ring 5,
The bolt 23 is screwed into a nut plate 25 fixed to the rear surface of the rear pillar panel 24. The through ring 5 and the guide member 21 are supported by bolts 23 and can swing independently.

A coil spring 26 is provided on the back side of the guide member 21.
The coil spring 26 has one end side fixed to a notch 21B formed in the side portion of the guide member 21 and the other end side fixed to a small hole 24A formed in the rear pillar panel 24.

The coil spring 26 is provided in the guide member 21.
The guide member 21 tilts about the bolt 23 as shown by an arrow A (clockwise) in the figure. Further, the guide member 21 is provided with a bent piece 21C bent in an L shape at a side portion near the bolt hole 21A.

The rear pillar panel 24 has a tilt regulating mechanism 2
After the 0, the through ring 5, and the like are attached, the rear pillar garnish 27 made of resin is covered. The rear pillar garnish 27 is formed with an outlet hole 2 for pulling out the webbing 1, and the rear surface is provided with an engagement projection 27A for engaging with a small hole 24B formed in the rear pillar panel 24. . The outlet hole 2 is formed to be inclined, and its length in the inclination direction is set to be longer than the width of the webbing 1.

In the vehicle seat belt device having the above structure, when the back seat S of the rear seat is in close contact with the pack panel 9, that is, when the seat back S is not tilted forward, as shown in FIG. The tip end portion of the guide pin 22 of the tilting restricting mechanism 20 contacts the back surface of the seat back S and is accommodated inside the back panel 9. At this time, the guide member 21 of the tilt regulating mechanism 20 is biased to rotate clockwise by the coil spring 26.
Is in contact with the back surface of the seat back S and cannot rotate.

Further, in the state of FIG. 3, the bent piece 21C on the upper part of the guide member 21 is in contact with the side portion of the through ring 5, but the tilting of the through ring 5 to the rear of the vehicle is not restricted. Therefore, the through ring 5 tends to hang down in the vertical direction due to its own weight. As a result, the webbing 1 is pulled by the through ring 5 and leans toward the lower side of the inclined outlet hole 2.

As shown in FIG.
As shown in FIG. 6, when the seat back S is separated from the back panel 9 even a little, the seat back S that is in contact with the tip end portion of the guide pin 22 is removed, so that the guide pin 22 pops out from the through hole 12.

That is, the guide member 21 is the coil spring 2
When the seat back S is removed, the guide member 21 is rotated clockwise, so that the guide pin 22 fixed to the bottom portion of the guide member 21.
Moves toward the front of the vehicle as indicated by arrow B in the figure and jumps out from the through hole 12 toward the inside of the vehicle.

In the state of FIG. 4, the guide member 2
Since 1 rotates clockwise, the bent piece 21C on the upper part of the guide member 21 presses the side portion of the through ring 5 to rotate the through ring 5 clockwise. That is, tilting of the through ring 5 to the rear of the vehicle is restricted. For this reason,
The webbing 1 approaches the upper side of the inclined exit hole 2.

As described above, when the position of the webbing 1 is displaced toward the front side of the vehicle in the vicinity of the through ring 5 and the webbing 1 moves toward the upper side of the exit hole 2, the position of the webbing 1 hanging from the exit hole 2 is determined. Since the webbing 1 is slightly separated from the seat back S, the webbing 1 is prevented from being caught in the seat back S, and the seat back S can be easily tilted forward.

According to this embodiment, since the guide pin 22 is attached to the bottom of the guide member 21 and the bent piece 21C is formed on the side portion of the guide member 21 near the bolt hole 21A, the guide pin 22 and the bent piece 21C are formed. Is integrally provided via the guide member 21, and the movement of the guide pin 22 can be reliably transmitted to the bending piece 21C.

(Embodiment 2) FIG. 5 is a configuration diagram of a main part of a vehicle seat belt device according to Embodiment 2. As shown in FIG. In the present embodiment, the tilt regulation mechanism 30 is provided as the regulation means. As shown in an exploded perspective view in FIG. 6, the tilt regulating mechanism 30 is fixed to a vertically arranged strip-shaped guide member 31 and an L-shaped bending piece 32 below the guide member 31. A guide focus 33 extending forward of the vehicle is provided. A bolt hole 31 </ b> A is formed in the lower portion (below the L-shaped bent piece 32) of the guide member 31. A bolt 34 is inserted through the bolt hole 31A, and the bolt 34 is screwed into a nut plate fixed to the rear surface of the rear pillar panel (the rear pillar panel and the nut plate are substantially the same as those shown in FIG. 2). ). The guide member 31 is swingably supported by a bolt 34.

A coil spring 35 is provided on the back side of the guide member 31.
One end of the coil spring 35 is fixed to a notch (not shown) formed in the side portion of the guide member 21, and the other end is fixed to a small hole formed in the rear pillar panel (small hole of the rear pillar panel). Is almost the same as that shown in FIG. 2). Then, the coil spring 26 biases the guide member 31, and the guide member 31 tilts around the bolt 34 as shown by arrow C (counterclockwise). Further, the guide member 31 is formed with a bent piece 31C bent in an L-shape at the upper end side portion.

In the vehicle seat belt device having the above-described structure, when the seat back S is not tilted forward, as shown in FIG.
As shown in, the tip end portion of the guide pin 33 of the tilting restriction mechanism 30 is in contact with the back surface of the seat back S and is housed in the through hole 12. At this time, the guide member 31 of the tilt regulation mechanism 30 is urged to rotate counterclockwise by the coil spring 35, but cannot rotate because the guide pin 33 is in contact with the back surface of the seatback S.

In the state of FIG. 7, the guide member 31
The upper bent piece 31C is in contact with the side portion of the through ring 5, but tilting of the through ring 5 to the rear of the vehicle is not restricted. Therefore, the through ring 5 tends to hang down in the vertical direction due to its own weight. As a result, the webbing 1 is pulled by the through ring 5 and leans toward the lower side of the inclined outlet hole 2.

When the seat back S is tilted forward, as shown in FIG.
As shown in FIG. 6, when the seat back S is separated from the back panel 9 even a little, the seat back S that is in contact with the tip end portion of the guide pin 33 is removed, and the seat back S jumps out from the through hole 12. That is, the guide member 31 is biased counterclockwise by the coil spring 26, and when the seatback S is removed, the guide member 31 rotates counterclockwise, so the guide pin 33 fixed to the lower portion of the guide member 31.
Moves toward the front of the vehicle as shown by arrow D in the figure and jumps out of the through hole 12.

In the state of FIG. 8, the guide member 31
Is rotated counterclockwise, the bent piece 31C on the upper portion of the guide member 31 presses the side portion of the through ring 5 to rotate the through ring 5 clockwise. That is, tilting of the through ring 5 to the rear of the vehicle is restricted. For this reason,
The webbing 1 approaches the upper side of the inclined exit hole 2.

In this embodiment, as in the case of the first embodiment, when the seat back S is tilted forward, the position of the webbing 1 is displaced toward the front side of the vehicle in the vicinity of the through ring 5, and the exit hole 2 is formed. Since the position of the webbing 1 that hangs down from the seat back S is slightly separated from the seat back S, the webbing 1 is prevented from being caught in the seat back S, and the seat back S can be easily tilted forward.

According to the present embodiment, since the lower portion of the guide member 31 is supported by the bolt 34, the bolt 3
4 with respect to the distance L1 between the guide pin 33 and the bolt 34
The distance L2 between the bent piece 31C and the bent piece 31C can be made sufficiently large, and the bent piece 31C can be largely moved (turned) by only slightly moving (turning) the guide pin 33. As a result, it is possible to prevent the guide pin 33 from protruding too much from the through hole 12 when the seat back S is tilted forward, which is good in appearance.

[0042]

As described above, according to the invention described in claim 1, when the seat back is tilted forward, the tilting of the through ring toward the rear of the vehicle is restricted by the restricting means. In the vicinity, the position of the webbing is displaced toward the vehicle front side, so that the position of the webbing hanging from the exit hole is slightly separated from the seat back. As a result, the webbing is prevented from being caught on the seat back, and the seat back can be easily tilted forward.

According to the second aspect of the invention, when the seat back is tilted forward, it can be reliably detected by the guide pin. Further, since the lower portion of the through ring is biased and tilted toward the front of the vehicle by the guide stopper and the tilted state is maintained, the position of the webbing near the through ring can be easily displaced forward of the vehicle. Become.

According to the third aspect of the invention, the movement of the guide pin can be reliably transmitted to the guide stopper.

According to the invention described in claim 4, when the seat back is tilted forward, the guide pin can be moved forward of the vehicle by the biasing means.

According to the invention described in claim 5, the urging means can be easily realized.

[Brief description of drawings]

FIG. 1 shows a vehicle seat belt device according to a first embodiment, in which (a) is a configuration diagram of a main part of the seat belt device,
(B) is an external view of the vicinity of the rear seat in which the seat belt device of (a) is installed.

2 is an exploded perspective view of essential parts of the vehicle seat belt device of FIG. 1. FIG.

FIG. 3 is a diagram showing a state where the back seat is not tilted forward in the vehicle seat belt device of FIG. 1.

FIG. 4 is a view showing a state in which the back seat is tilted forward in the vehicle seat belt device of FIG. 1.

FIG. 5 is a main part configuration diagram of a vehicle seat belt device according to a second embodiment.

FIG. 6 is an exploded perspective view of essential parts of the vehicle seat belt device of FIG.

FIG. 7 is a diagram showing the vehicle seat belt device of FIG. 5 when the back seat is not tilted forward.

FIG. 8 is a diagram showing a state where the back seat is tilted forward in the vehicle seat belt device of FIG.

FIG. 9 is a diagram for explaining the effect of the second embodiment.

FIG. 10 is a diagram illustrating a problem with a conventional technique.

FIG. 11 is a diagram illustrating a problem with a conventional technique.

[Explanation of symbols]

1 webbing 2 exit holes 3 rear pillar 4 retractors 5 Slew ring 8 buckles 12 through holes 20,30 Tilt regulation mechanism 21, 31 Guide member 21C, 31C bent pieces 22, 33 Guide pin 26,34 bolt S seat back

Claims (5)

[Claims] 1. A retractor provided on a side wall of a vehicle body diagonally rearward of a seat for winding a webbing, and a through ring swingably attached to a pillar diagonally rearward of the seat, wherein the webbing fed from the retractor is passed through the through. A vehicle seatbelt device mounted on a buckle through a ring, comprising: a vehicle seatbelt device for restricting tilting of the through ring to the rear of the vehicle when the seatback is tilted forward. 2. The guide means moves the vehicle body forward when the seat back is tilted forward, and biases the lower part of the through ring to the vehicle front side as the guide pin moves. The vehicle seat belt device according to claim 1, further comprising: a guide stopper that tilts the through ring and holds the tilted state. 3. The vehicle seat belt device according to claim 2, wherein the guide pin and the guide stopper are integrally formed. 4. A biasing means for constantly biasing the guide pin forward of the vehicle is provided, and when the seatback is tilted forward, the guide pin is moved forward of the vehicle by the biasing force of the biasing means. The vehicle seat belt device according to claim 2, wherein the seat belt device moves. 5. The vehicle seat belt device according to claim 4, wherein the urging means is a spring.