JPS5810667Y2 - safety belt device - Google Patents

Description

[Detailed description of the invention] The present invention is a safety belt device, especially a safety belt device equipped with a belt guide for a passive belt that can provide a safe and comfortable wearing feeling even for relatively large occupants with two body weights. Regarding.

Recently, various so-called passive belt devices have been proposed as safety belt devices to ensure the safety of occupants of automobiles, etc., which automatically attach and detach belts in conjunction with opening and closing of doors, etc. Normally, the inner guide ring is fixed at a fixed position in the vehicle, so the belts fixed to the side of the seat in the center of the vehicle body or extended from the tractor, especially the inner control belt, cannot be used by a passenger of normal physique. Even if there is no problem in such cases, if the passenger is large and has a protruding belly, it may get caught on the belly and make it heavier to pull out from the rafters, or it may get caught in the retractor and cause problems, making it safer. This not only makes the belt uncomfortable to wear, but also reduces the efficiency of the passive belt by half.

Therefore, the present applicant was acutely aware of the need to consider solutions to such cases, and based on the fact that there is a relative correlation between body size and weight, the applicant uses body weight to pull out the belt and prevent it from getting caught. They found a way to facilitate this process and came up with the present invention.

That is, the feature of the present invention is that a tension member with one end fixed is stretched inside the seat cushion part, and the other end is linked to the inner guide of the belt, so that when a load greater than normal body weight is applied, The inner belt guide is moved forward in conjunction with the curved deflection of the tension member, and the belt guide is held at an appropriate position to smoothly pull out and retract the belt into the second drawer.

Hereinafter, specific embodiments of the present invention will be further described in detail based on the accompanying drawings.

Figures 1 and 2 are examples showing the main parts of the safety belt device according to the present invention.
is a seat cushion part, 3 is a tension member such as a wire, and this tension member 3 has one end fastened and fixed 4 to the rear as appropriate inside the seat cushion part 2, and the other end is attached to the seat cushion part. The passage is regulated through a guide roll 5 inside the cushion part 2, and the cushion part 2 is attached to the side of the cushion part 2. The belt 13 pulled out from the retractor 12 in the normal passive belt position, for example, a diagonal belt in the case of a two-point type, or a belt guide provided at a position where the inner side control belt passes in the case of a three-point type. It is connected to 8.

This belt guide 8 is the seat cushion part 2 in the illustrated example.
A substrate 8a that is mated to a guide member 9 provided on the side by fitting or the like, and an arm 8 that extends upward from the substrate 8a.
A guide link is provided at the upper end of the arm 8b, through which the belt 13 pulled out from the retractor 12 is inserted and supported, and one end is attached to the fastening 11 at a predetermined point on the rear side of the board 8a. The other end of the return spring 10 is fixed to the base plate 8a, so that it is elastically supported so as to be able to elastically slide back and forth.

In this case, the spring force of the return spring 10 is selected to be the average tension of a normal weight, so that when an occupant of normal weight is seated, the restraint belt 13 occupies substantially the same position as in the conventional case.

Of course, the average normal body weight of the occupants corresponds to each vehicle type, and it is desirable to change it as appropriate, and generally 60 to 65 weight is most effective.

If this is based on a fairly large body weight, it is the same as fixing the belt guide for a passenger with a lower weight, and the fit will be weaker, so it cannot necessarily be said to be good. If so, it becomes difficult to maintain the tension of the return spring.

Therefore, 60 to 65 and 7 can be said to be the most versatile range.

Further, the sliding guide member 9 of the belt guide 8 may be provided with a stopper mechanism to press the button at the moving position when the belt guide 8 moves, but this is not always necessary. However, it is not something to be bound by.

In addition, the guide roll in Figures 1 and 2 is 5°8.7
The arrangement of the tension member 3 is determined by the tensioning direction of the tension member 3, and is therefore not necessarily restricted to the illustrated position.

Figure 3 shows the tensioning force direction of the tension member 3 on the seat cushion part 2.
This is another embodiment in which the same parts are shown with the same reference numerals, but the tension member 3 is connected to a belt guide 8 on the side of the seat cushion part 2 via guide rolls 5 and 6. There is.

In this case, the tension member 3 may be placed at the dotted line position or at the tilted position 3' shown by the two-dot chain line, or may be placed at both positions.Next, FIG. This shows another embodiment of the belt guide 8, which is the same as the case in FIG. 1 in that it has a base plate 8a mating with the sliding guide member 9, but instead of an upwardly extending arm 8b. A U-shaped holding frame 14 is extended,
A roller 15 is held within the U-shaped space of this U-shaped holding frame 14 by shafts supported by the holding frame 14 at the top and bottom, and a belt is provided between the vertical frame of the U-shaped holding frame 14 and the roller 15. 13 is inserted.

The vertically supported roller 15 has a bearing stored therein and is rotatable, thereby reducing the resistance when the belt 13 is wound into the drawer 8 and ensuring smooth transition.

In addition, the belt guide 8 has a substrate 8a and a holding frame 14 that are made separately, and the holding frame 14 is rotatable relative to the substrate 8a, which makes the vehicle heavy. , can be changed.

Note that in the figure, the same reference numerals as in the previous figures indicate the same parts.

However, when using the belt guide shown in FIG. 4, it is also possible to regulate the belt passage by utilizing the eccentric rotation of the belt guide without using the return spring 10 as shown.

The safety belt of the present invention is constructed as described above, and when an occupant weighing more than a predetermined average weight, for example, 90Ky or 100Ky, gets on the car and takes a seat, the fixed point 1 in the seat cushion 2 and the force member 3 Towed by the weight, the tension member 3 bends as shown by the two-dot chain line in FIG. Pull it forward against the pulling force and stop it at an appropriate position.

Therefore, the restraint was set to the same state as in the normal case tL
The inner belt can be rolled into the drawer 2 quite easily.

On the other hand, when the occupant gets off the vehicle and the load applied to the seat cushion section 2 disappears, the belt guide B returns to its normal position by the spring force of the return spring 10.

As described above, according to the device of the present invention, if the occupant is heavy,
Even if a person has a protruding belly, there is no fear that the belt will get caught on the belly due to the forward movement of the belt guide due to the interlocking operation, and the restraint is maintained as in the case of a passenger with a normal physique. This has the effect of making it easier to wrap the belt into the drawer 9, and provides a comfortable feeling when wearing the belt, as well as fully fulfilling the function of protecting the occupant by wearing the safety belt.

Note that when a roller with a built-in bearing is used as a belt guide, it has the advantage of making the belt slide more easily than a normal guide ring.

The device of the present invention is particularly effective when applied to a belt guide for an inner belt of a passive belt device.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an example of the essential parts of the safety belt device of the present invention, FIG. 2 is a schematic plan view thereof, and FIG. 3 is a schematic plan view showing a modified embodiment of the essential parts of the device of the present invention. FIG. 4 is a perspective view showing a modified embodiment of the belt guide. 1... Seat bag, 2... Seat cushion portion, 2... Tension member, 4... Tension member fixing point, 5.6, 7... ...Guide roll,
8... Belt guide, 8a... Board,
8b... Arm, 8c... Insertion ring portion, 9... Guide member, 10... Return spring, 12... Retractor-113・・・・・・
・Belt, 14... U-shaped holding frame, 15...
···roller.

Claims (1)

[Scope of utility model registration request] 1. One end is fixed inside the cushion part of the seat and a tension member such as a wire is stretched, and the other end is connected via a guide roll to a belt guide that can regulate the belt passage placed on the side of the cushion part to apply tension. When a load exceeding a predetermined value is applied to the member, the belt passage is moved forward in conjunction with the bending of the tension member to automatically ensure a restraint state suitable for the weight of the occupant. safety belt device. 2. The safety belt device according to claim 1, which is a registered utility model, in which the tension member is stretched in the front-rear direction inside the cushion portion of the seat. 3. The safety belt device according to claim 1, wherein the tension member is stretched from one side to the other side in the direction of the transverse force within the cushion portion of the seat. 4. The belt guide is composed of a base plate that mates with a sliding guide member provided on the side of the seat cushion, and an arm that extends upward from the base plate and has a belt insertion ring at its upper end, and has a return spring. Paragraph 1 of the utility model registration claim, which is pulled backward and supported by
The safety belt device described in Section 2 or Section 3. 5. A substrate on which the belt guide is opposed to a sliding guide member provided on the side of the seat cushion portion, a U-shaped holding frame extending upward from the substrate, and a U-shaped holding frame of the U-shaped holding frame. Claims for Utility Model Registration: Consisting of a roller with a bearing supported vertically by a holding frame within a space, a belt is inserted between the roller and the holding frame, and elastically supported rearward by a return spring. The safety belt device according to item 1, item 2, or item 3. 6. The safety belt device according to claim 4 or 5, wherein the tensile force of the return spring elastically supporting the belt guide is balanced to the average value of the normal body weight of the occupant.