JPH0427640A - Seat belt device - Google Patents

Abstract

PURPOSE:To restrain the frictional force which is applied to the passenger by a weaving body composed of weft and warps, and to enhance the constraint of the passenger by providing a belt having a structure such that wires having a low frictional coefficient and a high strength are interweaved between the weft of the weaving body in the longitudinal direction of the latter. CONSTITUTION:When a vehicle bumps, an explosive type pretensioner 28 is operated so that a buckle 19 is pulled in by way of a wire 26 and a shaft 25. Further, a tongue 16 is locked to the buckle 19, and accordingly, wires 20 for a shoulder belt 14 and a lap belt 18 are pulled so that the passenger 1 is constrained. In this case, a large frictional force is effected between the garment of the passenger and a weaving body 21 since they are made of cloth. Meanwhile, the wire 20 is interweaved straightforward in the longitudinally so that friction forces between the wires 20, warps 22 and weft 23 are restrained to a small value. Accordingly, parts of the weaving body 21 making contact with the passenger do not shift, and accordingly, only the wires 20 in the weaving body 21 slides, longitudinally thereof so as to constrain the passenger 1.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a notebook belt device.

2. Description of the Related Art Conventional sorting belt devices include those shown in FIGS. 5 and 6, for example.
(Refer to the publication number, etc.)

In this conventional example, the seat belt 2 of the occupant 1 is used to move
This is a sorting belt device in which a pre-tensioner 5 that tightens the webbing 4 is activated by a signal from a signal from the webbing 4.

FIG. 6 shows an example of the Prite-no-No-Yona 5. When the G sensor 3 senses a collision of a vehicle, an ignition signal is sent from the trigger unit 6 to the propellant 7 of the printer 5 to ignite the propellant. This explosive force pushes the piston 8 up inside the cylinder 9 and pulls the wire lobe IO. Since the wire rope 10 is wound around the shaft 11 of the lid tractor 13, the shaft 11 rotates and winds up the webbing 4.

This eliminates slack in the webbing 4 and further improves the initial restraint performance by pulling the occupant 1 rearward. In FIG. 5, the broken line shows the restraint state of the occupant 1 and the seat belt 2 at the initial stage of the collision, and the solid line shows the state after the webbing 4 is wound up on the tensioner 5.

Problems to be Solved by the Invention However, such conventional sound belts come in contact with the tongue i1 and restrain the occupant l. Since the belt is tightened by pulling the webbing 4 itself in the direction (longitudinal direction) of the webbing axis 12, the webbing 4 or the surface of the occupant 1 is rapidly moved in the direction of the webbing axis 12. In particular, there is a problem in that the webbing 4 located near the neck of the occupant 1 may apply a frictional force to the surface of the neck of the occupant 1.

As a measure to reduce the frictional force generated between the webbing 4 and the occupant 1, there is a method of wrapping a pad around the webbing. However, when the pad is wrapped around the vehicle, the pad must be attached and detached each time the vehicle gets on and off the vehicle, and a storage space is also required. Furthermore, when the pad is not removed, the pad gets stuck on the shoulder anchor, causing problems such as the webbing 4 not entering the retractor 13.

The present invention has been made in view of these conventional problems, and its purpose is to provide a notebook belt device that suppresses the frictional force of the webbing against the occupant and improves the occupant restraint performance. This is what we are trying to provide.

Means for Solving the Problems Therefore, the present invention provides a belt belt device having a pre-tensioner, in which a wire having a small coefficient of friction and high strength is inserted between parallel weft threads of a webbing main body composed of warp threads and weft threads. A heddle with a woven structure woven in the longitudinal direction was provided, and only the wire was connected to anchors at at least one end of the belt.

Effect When the vehicle collides, only the wire is bowed by the tongue, the wire slides longitudinally within the webbing body, and the entire restraining load of the occupant is shared by the wire.

On the other hand, the webbing main body remains in close contact with the occupant and hardly moves, and almost no frictional impact occurs between the webbing and the occupant.The present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are diagrams showing one embodiment of the present invention.

First, the configuration will be explained. Reference numeral 13 denotes a retractor, and the Nojorda Helt 14 unwound from the tractor 13 passes through the Nojorda D-ring 15, restrains the occupant 1, and removes the tank 16.
is combined with Further, a lap belt 18 whose one end is connected to the wrap anchor 17 is also connected to the tongue 16 to restrain the occupant l. The tongue 16 is locked by being inserted into a buckle 19 and connected to a floor (not shown).

Part 1. te 1, / Yorda belt 14 and lap belt 18
and the tongue 16 are connected only by the wire 20, and the webbing main body 21, which is made up of warp and weft yarns, is not connected to the tongue 16.

FIG. 2 shows the woven structure of the webbing 4 used in the Njorda belt 14 and the lap heald 18 in a longitudinal section.

22 is the warp of the webbing, 23 is the weft, and the warp 22
is threading every second weft thread 23.

20 is a thin and high strength wire made of metal or Kevlar, and between two parallel weft threads 23,
It is woven in a straight state in the axial direction of the webbing main body 21 and is not held. Several wires 20 are woven in the same manner in the longitudinal direction of the webbing main body 21, and these wires 20 alone have the strength to withstand the load generated when the occupant is restrained. Note that the wire 20 is surface-treated so that the friction between the kneading wire 20 and the warp threads 22 and the weft threads 23 is minimized.

On the other hand, as shown in FIG.
It is combined with A wire 26 is connected to the shaft 25, and a gunpowder-type bulletin board 2 is connected via a pulley 27.
8 is connected.

The shaft 25 is normally fixed near the upper end of the flick 24 with such strength that it will not loosen during normal use. Note that 3 is a collision detection sensor (G
sensor), which sends a signal to the trigger unit 6 in the event of a collision to ignite the gunpowder bulletin device 28.

Next, the operation will be explained with reference to FIGS. 3 and 4. When a vehicle collides, the pyrotechnic trigger 28 is activated and the wire 26. One buckle is retracted via the soyaft 25. Since the tongue 16 is locked to the buckle 19, the wires 20 of the nojorda helmet 14 and the lap belt 18 are bent and restrain the occupant 1.

At this time, there is a gap between the occupant's clothing and the webbing body 21.
Since they are made of cloth, a large frictional force acts. on the other hand,
The wire 20 is woven straight in the longitudinal direction, and the friction between the wire 20 and the warp threads 22 and weft threads 23 is kept low. Therefore, the shoulder belt 1
When only the wire 20 of the shoulder belt 14 and the lap belt 18 is pulled, as shown in FIGS. 2930 does not move, but only the wire 20 slides inside the webbing body 21 in the webbing longitudinal direction to restrain the occupant 1.

In this way, all restraint loads are carried out by the wire 20, so by pulling only the wire 20, the same initial restraint effect as in the past can be obtained. Since the joint part 18 with the passenger hardly moves in the axial direction, the frictional impact that the webbing edge part especially gives to the passenger is significantly reduced. Therefore, safety is increased and occupant restraint performance can be significantly improved.

Furthermore, in normal use, it can be used no differently from a conventional webbing 4 belt.

In the embodiment described above, the wire 20 is connected to the tongue 16, but the structure is such that only the wire 20 is connected to an anchor at one end of the belt 14 and the lap belt 18, so that the wire 20 is connected to the anchor at one end.
0 can be slid inside the webbing main body 21 so that the entire restraining load of the occupant is shared by the wire, and the tongue 16
It is not limited to.

Since the invention is configured as described in detail, according to the present invention, when the occupant is restrained, the webbing can be hung on the heald without moving the webbing body in the longitudinal direction relative to the occupant. The frictional impact of the webbing on the occupant is significantly reduced, and occupant restraint performance can be improved.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing one embodiment of the present invention, Fig. 2 is a longitudinal sectional view showing a webbing structure, Figs. 3 and 4 are explanatory diagrams showing the operation, and Fig. 3 is a front view. 4 is an explanatory view showing a side view, FIG. 5 is an explanatory view showing a conventional example, FIG. 6 is an explanatory view showing the vicinity of the conventional pre-tensioner, and FIG. 7 is an explanatory view showing the operation of the conventional example. be. l...Crew member, 12.Longitudinal direction, 14...Njorda belt, 15.Njorda D ring, 16..Tang, 1
8 Lap belt, 19... Buckle, 20... Wire, 21 Webbing body, 22... Warp, 23 Weft, Fringe, Nyaft, Wire, 28 Gunpowder type pre-tensioner. Figure 2 Zj 20----Fuii 22-1111 reporting system 23---Ichiyoko Mi Figure 8

Claims (1)

[Claims] (1) A seatbelt device with a pretensioner has a woven structure in which a wire with a low coefficient of friction and high strength is woven in the longitudinal direction of the webbing between the parallel weft threads of the webbing main body, which is composed of warp threads and weft threads. A seat belt device comprising a belt, and only the wire connected to an anchor at at least one end of the belt.