JPS5812851A - Seat belt device for automobile - Google Patents

Abstract

PURPOSE:To prevent a waving belt in the backward turning of a seat back from being sandwiched by guide members by providing stopper pins on the sides of a cushion frame supporting the belt guide members. CONSTITUTION:When a seat back 19 is slanted backward, the lower end 21a of a seat back frame 21 is pivoted clockwise about a step bolt 17 while a link member 25 connected to the lower end 21a through a pin 23 is pushed out leftward. Then, a slide pin 35 engaging an front end 33a of a slit 33 in the link member 25 is moved to the rear end 33b along the inner wall surface of the slit 33 against elastic force of an elastic member 39. Then, since a belt guide member 13 bears against a stopper pin 43, the guide member 13 is not slatned further to hold a certain slant angle even if the seat back 19 is further slanted backward.

Description

[Detailed description of the invention] This relates to measuring devices.

Generally, car seat belts are two-point seat belts to keep occupants safely in their seats.

There are sns such as diagonal mesh seatbelt), type 34 seatbelt, and full-length seatbelt.

By the way, in the past, as a device for supporting the seat belt as described above, for example, in the case of a two-point seat belt, the first
The ones shown in Fig. 2 and Fig. 2 are known.

In the case of a two-point seat belt device, webbing 1
(Seat belt main body 1.) One end is attached to the opening/closing end side of the door 3, and the other end is installed on the floor 5 in the center of the vehicle body or attached to the tractor 7 so that it can be freely drawn out and rolled up. The seat cushion 9 is configured to be guided via a belt guide member 13 connected to a link mechanism 11 provided at the center side of the vehicle body.

The link mechanism 11 is rotatably attached to the frame 21 via the rear end 1jK stepped pole 17 of the cushion frame 15.
and a link member 25 connected to the lower end 21@ of the link member 25 via a bottle 23.
llK is the bolt 2 with @ attached to the cushion 7 frame 15.
Belt guide member 13 rotatably supported via 7
The base end portions of are rotatably connected via a pin 29.

Further, a through hole 31 through which the webbing 1 is inserted is formed at the tip of the belt guide member 13.

By configuring the seat belt device as described above, for example, when the pc'/-dopa y 119 is folded forward as shown by the two-dot chain line in FIG. The guide member 13 is a stepped port 2
The webbing l, which stands up via the link mechanism 11 with the webbing 7 as a fulcrum and is guided by the belt guide member 13, moves to a place where there is a gap between the seat cushion 9 and the seat pack 19.

As a result, the seat pack 19 that previously occurred in two-door cars
When the seat cushion 9 is folded forward, the webbing 1
This solves problems such as the seat pack being pinched between the seat pack 19 and the seat pack 19, which prevents the opening and closing of the door 3, and prevents passengers from getting on and off the vehicle.

However, in such a conventional seat belt device, even if the problem of the webbing 1 being clamped when the seat pack 19 is folded forward as described above can be solved, there are the following problems. .

That is, since the belt guide member 13 is configured to always follow the tilting operation of the seat pack 19 via the link mechanism 11, the belt guide member 13 is configured to always follow the tilting operation of the seat pack 19. In the case of a full flat type), the belt guide member 13 is also tilted in the same way, and as a result, the webbing 1 is pinched or twisted between the belt guide member 13 and the lower bolt of the retractor, causing wear and deterioration. This causes a problem in that the operation of pulling out the webbing 1 is obstructed, making it difficult to open the door 3.

%, the webbing 1 being pinched as described above occurs when the seat body slides to the last layer of the vehicle.

The present invention has been made in view of such conventional problems, and the belt guide member that follows the tilting operation of the seat pack maintains the seat pack in a constant position even when the seat pack is tilted at a predetermined angle or more. The aim is to solve the above-mentioned problems.

In order to achieve the above object, the present invention provides a slit of a predetermined length on one end side of the link member so as to drip in the longitudinal direction of the link member, and a slit of one link member in a part of the belt guide member. A slide bin that slides at 8 is provided on the inner wall surface of the cushion frame, an elastic member is interposed between the slide bin and the link member, and the elastic member is always biased toward the tip of the slit of the slide bin, and the cushion frame is /(The main feature is that a stopper pin is provided to hold the belt guide member at a fixed tilted position when the belt is moved to the rear side.

Hereinafter, embodiments of the present invention will be described in the case of a two-door car based on FIGS. 3 to 10GK.

In the following description, the same components as those in the conventional example described above are given the same reference numerals, and the description thereof will be omitted.

FIG. 3 shows an enlarged front view of main parts according to the present invention, in which the bottom part kf of the seat pack 19 & the center part of the cut-out seat pack frame 21 are attached to the cushion frame 15 attached to the vehicle center side mK of the seat cushion 9. As shown in FIG. 5, it is rotatably supported via a stepped pole 17. In addition, the lower end of the seat pack frame 21 on one side from the stepped bolt 17 of the seat pack frame 21
K is rotatably connected to the other end 25M of the link member 25 via the pin 23.

Note that the bottle 23 is integrally formed with seven flange 23a for preventing the link member 25 from coming off.

A slit 33 having a predetermined length and an elongated oval shape is formed along the longitudinal direction of the link member 25 on the side surface of the one end portion 25b of the link member 25. A slide bin 35 attached to a belt guide Ml@13 that slides along the inner wall surface is engaged.

The belt guide member 13 has a stepped port 2 as in the conventional example.
It is rotatably attached to the cushion frame 15 via 7.

Note that a slit 33 is also provided at the upper end of the slide bin 35.
Seven ranks of 35 m are integrally formed to prevent it from coming off.

Further, at the lower part of the link member 25 where the slit 33 is provided, there is a K IJ link member 2 as shown in FIGS. 6 and 7.
An L-shaped spring support part 37 protruding from the side surface of the belt guide member 13 is integrally formed with the spring support part 37, and the slide bin 35 of the belt guide member 13 is attached to the tip part 33a side of the slit 33 (arrow F). ) K is supported by an elastic member 39 such as a coil spring which is always energized. One end of this elastic member 39 is always in contact with the side surface of the slide bin 35, and the other end is connected to the slit 33 of the link member 25.
It is supported by a spring stopper bin 41 installed on the 0 side.

Furthermore, a stopper pin 43 is implanted on the side surface of the cushion frame 150 that supports the belt guide member 13 to hold the belt guide member 13 at a constant tilt angle position when the seat pack 19 is moved to the rear side.

In addition, the retractor 7 installed in the center of the 70a 5 is desirably installed immediately behind the parking brake (not shown) in order to improve the comfort of the rear seats.
Further, the lower protrusion a of the retractor 7 is provided in parallel with the seat cushion 9 on the wall surface of the housing 7b formed with the step formed in the housing 7b of the retractor 7 as shown in FIG. ing.

Therefore, when the webbing 1 is pulled out or wound up 44, the webbing 1 is rarely rubbed by the lower output a of the retractor 7 or twisted.

Note that 138 in the figure is a guide portion of the belt guide member 13 provided with a through hole 31 through which the webbing 1 is inserted.

Next, the operation of the present invention constructed as described above will be explained.

First, as shown in Figures 3 and 8 m (4, (b) K),
When the seat pack 19 is in the normal position, the slide bin 35 implanted in the belt guide member 13 is inserted into the tip 33 of the slit 33 formed in the link member 25! The elastic member 39 contacts the slide pin S5Kml in its fully extended state, and further the belt guide member 134-! [
IIIL, held in the stopper bin 43 in the state a
It's K.

In this way, when the seat pack 19 is in the normal position, K
In this case, the guide portion 13a at the upper end of the belt guide member 13 is held in a position where the webbing 1 does not interfere with the seat pack 19, so that the webbing 1 is smoothly pulled out from the retractor 7.
It is designed to be guided by WII.

Next, when the seat pack 19 is in the normal position, when the seat pack 19 is folded forward to allow passengers in the rear seats to get on and off, the seat pack 19 should be folded forward as shown in Figure 9 (aJ and (bJ K). When it is folded down, the link member 25 connected via the lower end 521aK pin 23 of the seat pack 7 frame 21 is pulled in the direction of the arrow (to the right in FIG. 9 (!)) against the seat cushion 9. When the link member 25 is pulled to the right in FIG. 9 (aJ),
The lower end of the belt guide member 13, which is engaged with the tip 33a of the slit 33 via the slide pin 35, rotates counterclockwise about the stepped bolt 27 as a fulcrum.

At this time, the elastic member 39 that applies elastic force F to the slide bin 36 further slides the slide bin 35 by the distance that the link member 25 has moved to the right in the figure. The slide bin 35 does not move, and at this time the horsefly does not move the stopper bin 43.
The belt guide member 13 that was in contact with the stopper bin 4
Move away from 3.

As a result of this, the belt guide member 13 becomes almost upright with respect to the seat cushion 9, and therefore, a gap is created between the webbing l guided by the guide portion 13aK of the belt guide member 13 and the seat cushion 9 and the seat pack 19. Since the seat cushion 9 and the seat pack 19 move to a place where the door is closed, the door does not get caught between the seat cushion 9 and the seat pack 19 and does not interfere with the opening and closing of the door.

Further, the belt guide member 13 is always attached to the seat pack 19.
8(a) and () from the state where the seat pack 19 is folded forward as described above.
b) When the belt guide member 13 is rotated again to the normal position as shown in K, the belt guide member 13 is rotated clockwise and the link member 25 is moved to the left in the ninth frame extension, and the belt guide member 13 is rotated clockwise. It will return to the position where it contacts the stopper bin 43.

Next, when the seat pack 19 is tilted upward from the normal position, the lower end 2 of the seat pack frame 21
1 m rotates clockwise around the stepped bolt 17, and at the same time, the lower end 2 of the seat pack frame 21
The link member 25 connected via the 1aK bin 23 is
10th IQ (a) is pushed to the left.

When the link member 25 is pushed out to the left, the slide pin 35 that has been engaged with the tip 33a of the slit 33 of the link member 25 resists the elastic force of the elastic member 390 and moves along the inner 11 surface of the slit 33. The rear end 3 of the slit 33
Move to 3b (see IN10 diagram (ill)).

Further, at this time, since the belt guide member 13 is in contact with the stopper bin 43, even if the seat pack 19 is moved further rearward, it will not be tilted any further and the seat pack 1
9 is held at the same inclination angle as when it is in the normal state.

As described above, the belt guide member 13 is in the normal state of the seat pack 19 (Fig. 8(a), (bj >
In the tilting operation range shown in Figure 9 (al, (b)), the movement follows the tilting angle of the seat pack 19, and when the seat pack 19'' is fixed at a fixed angle, , a predetermined angle WIK corresponding to that angle is held.

However, the sheet pack 19 is normally 1 it (Fig. 8 (1)
), (b)) to the posterior state (Fig. 10 (aj,
(bIJ) When operating K, 1. As mentioned above, the belt guide member 13 has the slide bin 35 connected to the elastic member 3.
The slit 33 moves to the rear end 33b against the elastic force PK of 9 and follows the sheet pack 19 to the rear side until it comes into contact with the stopper bin 43, but does not move backward any further and remains at a constant angular position. Retained.

Therefore, for example, the seat pack 19 is
Even if the seat pack 19 is moved backwards with the seat itself slid toward the rear seat, the guide portion 13m of the belt guide member 13 There is no need to close the outlet of the retractor or twist the webbing l.

As described above, according to the configuration of the present invention, a slit of a predetermined length is provided at one end side of the link member that connects the belt kite member and the seat pack frame in the longitudinal direction of the link member. A part k of the belt guide member and a part I of the slit of the link member are provided. A slide bin that slides along with the rain is provided, and an elastic member that constantly biases the tip MK of the slit of the slide bin is interposed between the slide bin and the link member, and a seat bank is attached to the long frame. A stopper bin is provided to hold the belt guide member in a fixed tilted position when the seat pack is placed rearward, allowing the seat pack to sit in a fully flat position with the seat cushion.
! 1, or even if the seat pack is moved to the rear with the seat itself slid to the end toward the rear seat, the guide part of the belt guide member will close the exit of the retrantor. The webbing is not rattled or rubbed at the exit of the retractor, which prevents wear and deterioration of the webbing.Also, the webbing can be guided smoothly at all times, making it easy to open and close the door, and when passengers get on and off. It also has the effect of improving safety.

[Brief explanation of the drawing]

1rIIJ is a perspective view of a conventional seat belt device, 2nd
The figure is side view aA1 of No. 11fi.
311 v-v@KG Wft view, No. 611itl1
The 7th factor is the WRWJ diagram along the line Vl--Vl of the 3rd figure, and the 8th m (- and 8th) is a side view showing the normal state of the seed pack and the link member. Enlarged side view showing the relationship between the slit and the slide bin, No. 9
Figures (a) and (b) are similar to Figures 8 (m) and 10 (b), showing the seat pack in a forward-folded state, and Figure 10 (匈). Figure 8 (Same figure as BL. (Explanation of main symbols embroidered on the drawing) 9... Seat cushion 13... Belt guide member 15...
・Cushion frame 25...link member 25b・
...One end of the link member 33...Slit 35...
・Slide bin 33. a... Slitper tip 39°... Elastic member 43... Stopper bin patent applicant Nissan Motor Co., Ltd. Figure 2

Claims (1)

[Claims] In an automobile seat belt device, a belt guide member rotatably connected to a seat pack frame via a phosphorus PM material is provided on a side SKa of the seat cushion, and on one end side of the link member,
A slit is provided in the longitudinal direction KG of the link member, and a slide bin that slides along the inner wall 1i1iK of the slit of the link member is provided in a part of the belt guide member;
An elastic member is interposed between the slide bin and the link member, which always biases the slide bin toward the tip of the slit, so that when the seat pack is placed on the rear side of the cushion frame, the belt guide member is An automobile seat belt device having a 4I feature is that a stopper bin is provided to hold the seat belt in the tilted position.