JPS6312021B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a three-point seat belt device.

The three-point seatbelt is as shown in FIG. 13, and a seatbelt 53 is disposed behind and inside a door 52 of a vehicle 51, and one end of the seatbelt 53 is connected to a retractor 54 disposed below the side. The belt 53 is folded back through a through ring 55 disposed above the side, hangs downward, and fixed via an anchor 56 below the side, and the belt 53 is provided with an engaging tongue plate 57 slidably under the through ring 55. . When the seat belt 53 is not worn, it is held vertically inside the rear of the door 52 as shown in the figure, and when it is worn, the user reaches back, grabs the belt at the appropriate place, pulls it forward and inward, and places it on the center side of the passenger compartment of the seat 58. Tongue plate 5 for locking device such as buckle
7, and the seat belt 53 is attached to the waist and shoulders.

In the three-point seat belts mentioned above, the seat belt is located at the rear and side of the seat, so when you try to put on the belt, there is a distance between you and the belt, so you have to twist your body and reach out to pull the belt. It is inconvenient to put it on because it needs to be grabbed. Particularly when the door is large, such as in a two-door car, the pillar section at the rear of the door on which the seat belt is vertically installed is spaced to the rear of the seat, increasing the distance between the seat belt and the seat belt, making it inconvenient to attach the seat belt.

Therefore, it is conceivable to arrange the seat belt at the front, but this is inconvenient for passengers in the rear seats to get on and off the vehicle and for loading and unloading luggage.

In order to improve the above, various improvements have been proposed from the vertical side. For example, in Utility Model Application Publication No. 121020/1983, the belt guide arm is raised diagonally in conjunction with the raising and lowering of the seat to face the side of the seat, and the belt is The belt guide arm is pulled out to the side of the seat, and the belt guide arm is folded sideways and stored vertically behind the door, but when installed, the belt guide arm stands diagonally to the side of the seat and protrudes into the interior. There is a sense of prominence,
It is hard to say that it is the best in terms of appearance. Matami Kai Showa 53-
In No. 36239, the seat belt is linked to the up/down of the seat to move the sides of the roof back and forth, and when the seat is down, the belt is vertically positioned between the middle and front of the door opening, making it difficult for rear seat passengers to get in and out. It is hard to say that it is the best for loading and unloading cargo. Furthermore, Utsukai Showa 53-56624
In this model, a seatbelt locking hook is provided on the shoulder of the seat bag, the belt is locked to this hook, and the seat bag is folded down when the seat bag is worn, so the belt has to be connected and disconnected each time, which is cumbersome to operate.

The present invention has been made to overcome the above-mentioned disadvantages of the conventional three-point seat belt and the disadvantages of the above-mentioned conventional solutions that have been improved. A guide member is provided in the longitudinal direction, and the lower end of the seatbelt, which is folded back through a through ring and extended downward, is attached and supported to the guide member, and the lower end of the seatbelt is moved back and forth when the seatbelt is worn or not. In addition, the lower end of the seatbelt responds to the front and back adjustment of the seat when it is worn, and the forward movement of the lower end of the seatbelt is controlled between the front side of the seat and the rear side of the seat. Furthermore, even in such two-stage adjustment, the lower end position of the seat belt when the seat belt is fastened can be linked to the seat longitudinal movement adjustment, making it easier to fasten the seat belt, allowing occupants to get on and off the vehicle, and to adjust luggage. It is an object of the present invention to provide a three-point seat belt device for a vehicle, which facilitates loading and unloading of the vehicle, and further allows the above-mentioned purpose to be carried out without a feeling of protrusion into the vehicle interior.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an explanatory perspective view of a vehicle seen from the outside, cut away to show a seat belt device according to the present invention;
Fig. 2 is a perspective view as seen from the inside of the vehicle, and Fig. 3 is an exploded perspective view of the movement guide means for the lower belt fixation part.
In the embodiment, a two-door car is shown, but the present invention can be applied to a four-door car and other vehicles.

A door 4 is provided in the door opening 3 of the vehicle body 2 of the vehicle 1 so as to be openable and closable, a pillar portion 5 is provided behind the opening 3, a window 6 is provided behind the pillar portion 5, and a window 6 is provided inside the vehicle interior. A rear seat 7 is provided. A retractor 9 is stored and installed between the inner lining 8 and the outer side panel at the lower part of the pillar part 5, and the retractor 9 has a single seat belt 10.
One end of the seat belt 10 is wound up and stored, and the seat belt 10 is led out to the interior of the vehicle inside the pillar part from a lead-out hole 5a provided at the lower part of the pillar part, and is guided through a swingable through ring 11 provided at the middle part to the upper part of the pillar part. folded back,
It extends downward along the pillar part 5 and is fixed to the anchor 13 behind the lower side 3a of the door opening 3,
A tongue plate 12 is slidably fitted below the folding point 10a of the seat belt 10.

In front of the rear seat 7, front seats 14 are provided on the left and right sides of the front part of the vehicle interior. Seat back 14 that can be tilted up and tilted angle adjustable
b has been erected. The seat cushion 14a has movable rails 15, 15 fixed to the lower left and right sides of the seat cushion 14a.
is configured to be slidably engaged with fixed rails 16, 16 provided on the floor 2a in the left and right directions, so that the seat cushion 14a can be adjusted in the front-rear direction, Adjustment is performed using a handle 17 provided below the side of the seat cushion 14a on the opening 3 side.

Inside the side sill 2b, which forms the inside of the lower part of the vehicle interior below the lower side 3a of the opening, or on the outer surface of the interior side of the vehicle interior, a linear groove-shaped rail 18, which is a first guide member in the front and rear direction, is installed in the front and rear direction. The rail 18 is provided approximately horizontally on the inside of the vehicle, and the rail 18 is opened 18a to the inside of the vehicle, and the groove portion 18 inside
Below b, there is a guide passage 18c that extends up and down in the front-rear direction,
18d, and the upper passage 18c communicates with the lower part of the groove 18b through a notch 18e in the front-rear direction. The rail 18 has a length from the rear of the opening 3 below the pillar part 5 to the front side of the seat cushion 14a.A motor 19 is provided at the rear of the rail 18.
9 is a protrusion 21a on the outer periphery of the deceleration transmission part 20...
A sprocket-shaped drive pulley 21 having a large number of...
On the other hand, the upper and lower passages 18c of the rail 18,
A tape 22 having an engaging hole 22a in the length direction is inserted into 18d, and the tape 22 extends in a loop from the rear end of the passage and is wound around the pulley 21, and the tape 22 is driven by the forward and reverse drive of the motor. 22 moves within the passage. A slider 23 is slidably fitted into the groove 18b of the rail, while a slider 23 is fitted on the outer surface of the side sill 2b on the passenger compartment side and parallel to the rail 18 on the outside of the passenger compartment side of the rail 18. A linear guide rod 24, which is a second guide member, is provided substantially horizontally in the front-rear direction.

The guide rod 24 has a front portion 24a bent outward, that is, toward the side sill, and is fixed thereto, and the rear portion 24a
b is bent downward and fixed to a floor or the like below the rear side of the opening 3a. The guide rod 24 has a concave first holder 25 that is connected to the slider 23 described above.
is engaged with the concave portion so as to sandwich the guide rod 24 from below, and the holder 25 has a second holder 2 having a downwardly concave shape.
6 is pivoted with a pin 25a, and the guide rod 2 is attached to the downward concave portion.
The second holder 26 is provided with a pin 26a at the lower part of the second holder 26 that crosses under the guide rod 24.
6a faces down with a slight shift in the length direction, and transmits the load of the seat belt to the second holder 26 to the guide rod 24 and bends it with pins 25a and 26a, so that the load on the seat belt is also transferred to the vehicle body side. I decided to support it. The straight portion 24c of the guide rod 24 is slightly longer than the back-and-forth movement distance of the lower end fixing portion of the belt, and the holder 2
5 and 26 are sliders 23 along the straight portion 24c,
It slides in the front and back direction by the drive of the tape 22, and the aforementioned anchor 13 at the lower end of the seat belt is pivotally attached to the upwardly protruding bracket 26b of the second holder 26 with a bolt 27 or the like. Therefore, the lower end anchor 13 of the seat belt 10 is guided by the guide rod and rail and moves back and forth on the side of the side sill.

In the above, Fig. 1 shows the seat belt anchor 1.
3 shows a state in which the seat belt anchor 13 has moved forward, and FIG. 2 shows a state in which the seat belt anchor 13 has moved backward.

As shown in FIG. 2, when the seat belt 10 is not worn, it is located below the pillar portion 5 and behind the opening lower side 3a.
It is stored vertically in a straight line and approximately vertically. For example, the seat cushion 14 in FIG.
Pressure-sensitive switches a and b provided at the rear of the opening detect the occupant's departure from the seat cushion, the up/down detection switch c of the seat back 14b as shown in Fig. 6, and the opening/closing of the door 4 as shown in Fig. 8. Switch d provided on the side or switch e provided on the hinge part,
As shown in Fig. 9, there is a switch f provided on the rear side of the door 4, or a switch g that detects the movement of the door opening/closing handle, and a switch h that detects the parking operation and release of the parking brake lever 28 as shown in Fig. 10. etc., and upon detection of release of the attached state, the motor is reversed to move the anchor 13 backward and hold it at the position shown in the figure. The seat belt 10 is located at the rear of the opening and does not interfere with the getting on and off of the rear seat passengers or loading and unloading of luggage. This state is shown in FIG. 2 and FIG. 4A.

Next, when the seat belt 10 is being worn, the belt anchor 13 advances from the position A shown in the figure, advances to the side of the rear end of the seat cushion 14a, and stops at this position to assume the wearing position. This is shown in Figures 1 and 2.
4 and 4B, the extending portion of the seat belt from the through ring 11 is located on the rear side near the passenger, and the belt can be easily grasped and attached. The forward movement of the seat belt 10 and the movement to the wearing position are performed by detecting the sitting on the seat cushion, closing the door, releasing the parking brake, etc. using the switch, and rotating the motor in the forward direction.

By the way, as is clear from FIGS. 1 and 2, a position detection switch i for the seat cushion 14a is provided. This switch i is operated by the holders 25, 26, etc. that move the belt anchor 13 forward, and when the holders 25, 26, etc. or the pusher provided thereon comes into contact with the switch i, the drive of the motor is stopped. Stops the belt from moving forward. As a result, when the seat cushion 14a is adjusted back and forth using the handle 17 shown in FIGS. 1 and 2 or the operating bar 117 shown in FIG. 5, the seat belt is fixed downward according to the adjusted position. The belt anchor can be adjusted to stop the seat belt at an ideal anchor point. That is, the lateral position of the rear end of the belt anchor moves back and forth when the seat moves back and forth, and the position of the belt anchor in the attached state is adjusted back and forth in accordance with the back and forth movement.

FIG. 5 shows a modified embodiment, in which the seat cushion front and rear adjustment handle 117 is replaced by the seat cushion 14a.
It protrudes downward and forward, and a switch j is attached to it to achieve the same operation as described above.

Next, regarding the movement of the belt anchor 13 from the above-mentioned backward limit position A to attach the belt, the belt anchor 13 moves beyond the attachment position B when the above-mentioned belt attachment is detected, and moves from the middle part to the front part of the seat cushion 14a. It moves forward to the lateral front position C (shown in FIGS. 4 and 5), then moves backward and stops at the normal mounting position B on the side of the rear end of the seat cushion. This state is shown by the solid line in FIG. In other words, move once to the frontmost position,
Next, move back to the rear side of the seat and install it. According to this, the belt becomes easier to grip, and the wearing operation becomes easier. The backward movement from the forwardmost position to the normal mounting position is performed by the tongue plate engagement device 112.
A switch k or a switch provided on the instrument panel may be used to detect the locking of the vehicle, and stopping at the normal position may be detected using the switch i described above. In this case as well, only point B or points A and B can be adjusted back and forth using the switch in conjunction with the front and rear adjustment of the seat.

In FIGS. 11 and 12, the seat belt 10 is stored in a storage gap 229 provided at the rear side of the opening when the vehicle is reversing. As a result, the belt anchor is stored and not exposed to the inside of the vehicle, and the lower part of the belt is not touched by feet or umbrellas, etc., and the bell is not soiled. It is not touched by passengers when boarding or disembarking. While having this advantage, the belt 10 is pulled forward from the gap when worn, and the figure is an enlarged cross-sectional plan view of a specific structure.

The body including the pillar part is the inner/outer plate 205a, 2
05b, a lining member 208 that opens forward is provided inside the inner plate 205a, and the member 208 has a closed rear end. This forms the upper part 229a of the gap.

In the lower part of the pillar part, the front part of the lining member is made thick, and a recess 208b larger than the width of the belt is provided from the front to the rear in this thick front part 208a to form a lower part 229b of a storage gap for the belt and anchor.

As is clear from the above, according to the present invention, the anchor of the lower fixing portion of the seat belt can be moved back and forth depending on whether it is attached or not attached, and the above can be done without any protrusion or feeling of protrusion in the vehicle interior. In order to make it easier to attach the belt, to make it easier for passengers to get on and off the vehicle, and to load and unload luggage, the anchor point can be adjusted depending on the front and back positions of the seat, so the optimal anchor point can be obtained at the front and rear positions of the seat. Furthermore, by making the forward movement of the anchor two stages, it has many advantages, such as further improving the ease of belt attachment.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an explanatory perspective view of the main parts of the vehicle seen from outside, FIG. 2 is a perspective view of the inside of the vehicle, and FIG. 3 is a diagram showing the drive guide mechanism. 4 is an explanatory plan view showing the positional relationship between the seat and the belt anchor, FIGS. 5 to 10 are explanatory views showing examples of detection switches, and FIG.
1 and 12 are cross-sectional plan views of the upper and lower parts of the belt storage section, and FIG. 13 is a perspective view of the conventional means. In the drawings, 1 is a vehicle, 9 is a retractor, 10 is a seat belt, 13 is a lower fixing part, 14 is a seat,
18 and 24 are guide members.

Claims (1)

[Scope of Claims] 1. One end of the belt is fed out to a retractor provided on the side of the vehicle body and connected so as to be freely retractable, and the belt is extended from the retractor and folded back at the folding guide section provided on the upper side of the vehicle body. A three-point seat in which the belt is attached by guiding it downward and fixing the other end to the lower side of the vehicle body, and locking the belt between the folded part and the lower fixing part to an engagement device provided in the center of the vehicle body. In the belt device, the seat belt device engages with a linear rail disposed approximately horizontally in the front-rear direction near a side sill on the inside side of the vehicle at the lower side of the door opening, and is engaged with this rail to move forward. a slider which is the rear end of the seat seat; and a slider which is attached to the slider and whose movement can be adjusted in the front-rear direction, changes its movement position back and forth along the rail as the seat moves back and forth. A seat belt device for a vehicle, comprising a lower fixing portion. 2. One end of the belt is fed out to a retractor provided on the side of the vehicle body and connected so that it can be retracted freely. The belt is extended from the retractor, folded back at the folding guide section provided on the upper side of the vehicle body, and guided downward to the vehicle body. A three-point seat belt device in which the belt is attached by fixing the other end to the lower side of the seat and engaging an engagement device provided in the center of the vehicle body between the folded portion and the lower fixing portion of the belt, comprising: The belt device engages with a straight rail that is arranged approximately horizontally in the front-rear direction near the side sill on the inside side of the vehicle at the lower side of the door opening, and the belt device engages with this rail so that the forward movement position is at the rear end of the seat seat. a lower fixed portion of the belt which is fixed to the slider and is movable in the front and back direction along the rail; and a lower fixed portion of the belt that is attached to the side of the seat seat when the belt is attached. 1. A seat belt device for a vehicle, comprising: a moving means for moving the belt forward to near the front of the seat belt, and moving the belt rearward to near the rear end side of the seat after the belt is attached. 3 One end of the belt is fed out to a retractor provided on the side of the vehicle body and connected so that it can be retracted freely.The belt is extended from the retractor, folded back at the folding guide provided at the upper part of the side portion of the vehicle body, and guided downward to the vehicle body. A three-point seat belt device in which the belt is attached by fixing the other end to the lower side of the seat and engaging an engagement device provided in the center of the vehicle body between the folded portion and the lower fixing portion of the belt, comprising: The belt device engages with a straight rail that is arranged approximately horizontally in the front-rear direction near the side sill on the inside side of the vehicle at the lower side of the door opening, and the belt device engages with this rail and moves forward to the rear end of the seat seat. a slider that is a section; a lower fixing section that is fixed to the slider and can change its movement position back and forth along the rail as the seat moves back and forth; A moving means for moving the lower fixing part forward to near the front side of the seat seat when the belt is attached, and moving it rearward to near the rear side of the seat seat after the belt is attached. A vehicle seat belt device comprising: