JPS6124428Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a webbing connector in which the lap webbing and the shoulder webbing are constructed as one continuous webbing, and the intermediate part of the continuous webbing is attached to the tip of the inner webbing.

A webbing connector used in a seat belt device in which a shoulder restraint part and a waist restraint part are constructed of one continuous piece of webbing is attached to the tip of the inner webbing and has an opening for folding back the middle part of the continuous webbing. are doing.

Therefore, the continuous webbing is moved through this opening to accommodate the lengths of the shoulder restraint and the waist restraint,
It is now possible to obtain a webbing attachment condition that is suitable for the occupant's physique and driving posture.

However, in this webbing connector, one of the shoulder restraint part and the waist restraint part is movable to the other even in an emergency such as a vehicle collision, so there is a risk that the occupant will not be restrained sufficiently. In other words, when the waist restraint moves toward the shoulder restraint, the amount of movement of the occupant's upper body increases, causing a secondary collision of the head and chest with the steering wheel, instrument panel, etc. inside the vehicle. If the shoulder restraint section moves toward the waist restraint section, a submarine phenomenon occurs in which the occupant sinks into the seat, resulting in insufficient restraint. In particular, in the case of a seat belt device that is wound up on an inner webbing or a retracting device, the continuous webbing and the connecting device are easily moved relative to each other in the event of a vehicle collision, making the above problem even worse.

There is also a clamp device described in Japanese Utility Model Application No. 56-141638 and a webbing lock device described in Japanese Utility Model Application Publication No. 56-138649, both of which push up a slide member to press the webbing. It had a drawback that the pressing force was insufficient due to the structure that it was stopped.

Taking the above facts into consideration, the present invention improves the comfort of the interior of the vehicle by enabling continuous movement of the webbing during normal vehicle driving conditions, and prevents this movement in the event of a vehicle emergency to securely restrain the occupants. The purpose is to provide a webbing connector that allows for

The webbing connector according to the present invention has a guide shaft attached to a base plate, a continuous webbing wrapped around it and folded back, a connecting shaft attached to this base plate, an inner webbing attached, and the connecting shaft and guide shaft coming into contact and separating from each other by a slight length. This connection shaft allows the continuous webbing to move freely by moving the lock lever, which is pivotally supported by the base plate, away from the guide shaft by approaching the guide shaft under normal vehicle running conditions, and by increasing the tension of the webbing in case of a vehicle emergency. The connecting shaft is separated from the guide shaft, the lock lever is rotated, and the middle part of the continuous webbing is clamped and locked between the lock lever and the guide shaft, thereby keeping the lengths of the shoulder restraint part and the waist restraint part unchanged, thereby securing the occupant. It's definitely becoming more restrained.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, the continuous webbing 10 is a sheet 1.
Both the shoulders and waist of the occupant 12 seated on the vehicle 1 are restrained. That is, one end is the door 13
The upper rear end is secured to the upper rear end, and the other end is secured to the lower rear end of the door, and the middle part is folded back at the tip of the inner webbing 14 to form a shoulder restraint part 16 on one side and a waist restraint part 18 on the other side. ing.

A webbing connector 20 is provided for the purpose of folding back the intermediate portion of the continuous webbing 10. The inner webbing 14 having the webbing connector 20 at its tip has a retractor 22 at its base.
The retractor 22 is attached to the axle shaft tunnel 24. Further, this retractor 22 retracts the inner webbing 14 with a biasing force, but in the event of a vehicle emergency, the extension of the webbing 14 is instantly stopped by the operation of an acceleration sensor (not shown).

To explain the webbing connector 20 in detail, a pair of leg plates 28 and 30 extend parallel to each other from both sides of the base plate 26, and small diameter portions at both ends of a guide shaft 32 are pivoted (preferably rotatable smoothly). ). An intermediate portion of the continuous webbing 10 passing through the rectangular opening 34 of the base plate 26 is wound around the guide shaft 32 .

Further, each of the leg plates 28 and 30 is provided with a long hole 36, into which the small diameter portions at both ends of the connecting shaft 38 are inserted. Therefore, this connecting shaft 38 can be moved toward and away from the guide shaft 32 by the length of the elongated hole 36, and the tip of the inner webbing 14 is wrapped around and locked around this connecting shaft 38.

Further, a pair of support shafts 40 and 42 are fixed to the leg plates 28 and 30 of the base plate 26 on both sides of the connection shaft 38, and intermediate portions of lock levers 44 and 46 are supported respectively. This lock lever 4
One end 48 of 4, 46 corresponds to the connecting shaft 38 via the inner webbing 14, and is wound around the connecting shaft 38 by the biasing force of a leaf spring 52 as a biasing member interposed between the other end 50. The inner webbing 14 is in contact with the inner webbing 14. Furthermore, in this state, the other end 50 is connected to the guide shaft 32 and the continuous webbing 10.
The continuous webbing 10 can be moved in the longitudinal direction.

In this way, one end 48 of the lock levers 44, 46
As shown in FIG.
It is wedge-shaped so as to block the path of movement in the direction away from the target. Therefore, the lock levers 44, 46
Each one end of the connecting shaft 38 is connected to the elongated hole 3 of the leg plate 28, 30.
6 in the direction away from the guide shaft, they are separated from each other as shown in FIG.
The webbing 10 is pressed against the webbing 2 to lock it in place.

This movement of the connecting shaft 38 is caused by a large webbing tension that occurs in a vehicle emergency.

Next, we will explain the operation of the above embodiment. When a passenger opens the door 13 when getting into the vehicle, since both ends of the continuous webbing 10 are fixed to the door 13, the inner webbing 14 is unwound from the retractor 22, and the inner webbing 14 is unwound from the door 13. Webbing 1 according to open circular motion
0 and 14 move toward the front of the vehicle. As a result, the seat belt is lifted up in a straight line connecting the exits of the webbings 10 and 14, and a seating space for the occupant 12 is formed between the webbings 10 and 14 and the seat 11. When the occupant gets on the vehicle and closes the door, the inner webbing 14 is retracted by the retractor 22, and the continuous webbing 10 as shown in FIG. 1 is attached to a position suitable for the occupant. At this time, although the length distribution of the shoulder restraint part 16 and waist restraint part 18 of the continuous webbing 10 changes depending on the occupant's physique, etc., the continuous webbing 10 of the guide shaft 32 of the coupling device 20 may slip and the lengths may be different from each other. This makes it possible for occupants of different physiques to always wear the webbing appropriately. Further, even after the occupant moves when operating switches in the vehicle interior, the continuous webbing can be moved as described above, so that the webbing is attached to the appropriate initial position as shown in FIG.

Next, let us explain about emergencies such as vehicle collisions.
Unwinding of the inner webbing 14 from the retractor 22 is locked due to a vehicle collision, and large tension is generated in the continuous webbing 10 and the inner webbing 14 due to the inertial movement of the occupant.

As a result, a force is applied to the connecting shaft 35 and the guide shaft 32 in a direction to separate them from each other, and the connecting shaft 38 moves in the elongated hole 36 in a direction away from the guide shaft 32.
Accordingly, as shown in FIG. 6, the lock levers 44, 46 have one end 48 pressed by the connecting shaft 38, and the other end 50 presses and clamps the webbing 10 onto the guide shaft 32.

The pressing force of these lock levers 44, 46 is 4 at one end.
8 and the connecting shaft 38 due to the wedge action,
It is extremely large and reliably prevents the continuous webbing 10 from moving in the longitudinal direction.

In this way, in the event of a vehicle emergency, the middle part of the webbing 10 is locked, so the lengths of the shoulder restraint part 16 and waist restraint part 18 do not change, and the occupant 12 is reliably restrained by the webbings 10 and 14, ensuring safety. Can be secured.

7 and 8, a second embodiment of the present invention is shown, which differs from the previous embodiment in that a single lock lever 46 is used. Also base plate 2
6 is a direction perpendicular to the above embodiment,
One end of the leaf spring 52 is secured to the base plate 26 with a screw 56. Accordingly, in this embodiment, the connecting shaft 38 is disposed between the base plate 26 and one end 48 of the lock lever 46.

In this embodiment configured in this way, as in the previous embodiment, the lock lever 4 is closed during normal driving conditions.
6 is separated from the continuous webbing 10, and in the event of a vehicle emergency, the connecting shaft 38 can rotate one end 48 of the lock lever 46 and the other end 50 can press and lock the continuous webbing 10 onto the guide shaft 32.

Note that the biasing member in each of the above embodiments is not limited to an elastic body, and it is also possible to use a shear pin or the like that breaks under a predetermined load, and any biasing member that prevents rotation of the lock lever until a predetermined webbing tension is generated can be used. Applicable.

As explained above, in the webbing coupling device according to the present invention, the coupling shaft on which the inner webbing is locked when the vehicle is normally running is brought closer to the guide shaft on which the outer webbing is wound by the biasing means, and the lock lever is separated from the guide shaft. Therefore, the occupant can always be properly fitted with the webbing, and in the event of a vehicle emergency, the inner webbing moves the connecting shaft in a direction away from the guide gauze and presses one end of the dogleg-shaped lock lever. For this purpose, the dog-shaped lock lever rotates around the support shaft, and the head at the other end directly presses the intermediate portion of the continuous webbing against the guide shaft to securely lock it.

Therefore, the lengths of the shoulder restraint part and the waist restraint part of the passenger do not change with each other, and an excellent effect is achieved in that the passenger can be instantly and reliably restrained.

In addition, since the present invention has a structure in which the intermediate part of the continuous webbing is directly clamped by a rotating dog-shaped lock lever, the tensile force of the inner webbing becomes the above-mentioned clamping force with a simple structure, and sufficient restraint is achieved. You can gain power.

[Brief explanation of the drawing]

FIG. 1 is a front view of a seatbelt device to which a webbing connector according to the present invention is applied, as seen from the lateral direction of the vehicle; FIG. 2 is a front view of a first embodiment of the webbing connector according to the present invention; Fig. 3 is a side view of Fig. 2, Fig. 4 is a sectional view taken along the line of Fig. 3, Fig. 5 is a sectional view taken along the line of Fig. 4, Fig. 6 is an operation diagram of Fig. 5, and Fig. 7 is a sectional view taken along the line of Fig. 3. A sectional view corresponding to FIG. 5 showing a second embodiment of the present invention, and FIG. 8 a working diagram of FIG. 7. DESCRIPTION OF SYMBOLS 10... Continuous webbing, 14... Inner webbing, 16... Shoulder restraint part, 18... Waist restraint part, 20... Webbing connector, 26... Base plate, 32... Guide shaft, 38... Connection shaft ,4
4,46...Lock bar, 48,50...One end,
52...Plate spring.

Claims (1)

[Scope of utility model registration request] a base plate; a guide shaft that is attached to the base plate and wraps around the intermediate portion of the continuous webbing; a connecting shaft that is attached to the base plate and locks the inner webbing, and that can be moved into and out of contact with the guide shaft for a predetermined length; One end is pivotally supported on the base plate and normally holds the connecting shaft, rotates when the connecting shaft moves in the direction away from the guide shaft, and the other end head holds the intermediate part of the connecting webbing between it and the guide shaft. A webbing connector having a dogleg-shaped lock lever that is clamped to a guide shaft, and a biasing member that holds the other end of the lock lever in a direction away from the guide shaft.