JPS6119960Y2 - - 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 constituted by 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 a single 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 interior. Furthermore, 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 a seat belt device in which the inner webbing is wound up on a winding device, relative movement between the continuous webbing and the connector is easy 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 Publication No. 56-141638, but this also has a structure in which a lever member is used to push up a slide member and press the webbing to stop it, and the pressing force is insufficient. There were flaws.

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

The webbing connector according to the present invention has a first part curved in opposite directions to the tip of the inner webbing.
A pair of arms are attached, and the intermediate part of this arm is provided with a roller that folds back the intermediate part of the continuous webbing, and the tip part is provided with a lock bar. When the vehicle is normally running, the rollers and the lock bar are separated and the continuous webbing is moved in the longitudinal direction. The lengths of the shoulder restraint part and the waist restraint part are made flexible, and in the event of a vehicle emergency, the rollers are moved closer to the lock bar and the continuous webbing is sandwiched between them to prevent the continuous webbing from moving in the longitudinal direction. There is.

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, the other end is secured to the lower rear end of the door, and the middle part is secured to the inner webbing 14.
is folded back at the tip of the shoulder restraint part 16 on one side,
The other side serves as a waist restraint section 18.

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 2 at its base.
2, and this retractor 22 is attached to the axle shaft tunnel 24. Further, this retractor winds up the inner webbing 14 using a biasing force, but in the event of a vehicle emergency, the unwinding of the webbing 14 is instantly stopped by activation of an acceleration sensor.

To explain the webbing connector 20 in detail, a shaft 26 is rotatably supported at the tip of the inner webbing 14. Webbing 1
A first arm 28 and a second arm 30 are adjacent to and pivotally supported at the distal end of the shaft 26 protruding from both ends of the shaft 26, respectively.

These arms 28 and 30 have longitudinal axes bent at a predetermined curvature, and elongated holes 32 are formed in their intermediate portions, through which narrow diameter portions 36 at both ends of a roller 34 pass. This roller 34 has a long hole 3
The continuous webbing 10 is rotatable in the middle part, and the middle part of the continuous webbing 10 is wrapped around and folded back. Also, the narrow diameter portion 36 of this roller and the shaft 26
A tension coil spring 38 is interposed between the ends of the shaft 2 and the narrow diameter portion 36 of the roller
It is in contact with the end closer to 6.

The tips of the first arm 28 and the second arm 30 are disposed on opposite sides of the roller 34, and
A first lock bar 40 and a second lock bar 40 are attached to this tip, respectively.
A lock bar 42 is fixed. That is, both ends of the first lock bar 40 are fixed to the distal ends of the pair of first arms 28, and both ends of the second lock bar 42 are fixed to the distal ends of the pair of second arms 30, respectively.

As a result, the lock bars 40, 42 are placed on the opposite side of the continuous webbing 10 which is folded back by the roller 34, as shown in FIG. However, the roller 34 resists the urging force of the spring 38 and the arm 2
8 and 30, that is, toward the shaft 26
When moving in the direction away from the curved long hole 32
Due to this action, the lock bars 40 and 42 come close to each other and sandwich the roller 34 as shown in FIG.

Next, the operation of the above embodiment will be explained. When the occupant opens the door 13 to get 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 webbings 10, 14 are unwound in accordance with the opening arc movement of the door 13. moves to the front of the vehicle. As a result, the seat belt is lifted up on 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 in 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, the length distribution of the shoulder restraint part 16 and waist restraint part 18 of the continuous webbing 10 varies depending on the occupant's physique, etc., but the rollers 34 of the coupling device 20 are connected continuously as shown in FIGS. 2 to 4. Since the webbing 10 slides and has a mutually flexible length, even occupants of different physiques can always wear the webbing appropriately. The continuous webbing can be moved in the same way as described above even after the occupant moves when operating switches in the vehicle interior, so the webbing can be attached to an appropriate 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, the roller 34 moves within the elongated hole 32 in a direction away from the shaft 26. This long hole 3
2 has its longitudinal axis bent along the longitudinal axis of arms 28, 30, so that arms 28, 30 are rotated about shaft 26 in a direction in which locking bars 40, 42 approach each other. Therefore, as shown in FIG. 5, the lock bars 40, 42 press the webbing 10 against the roller 34 and prevent the webbing 10 from moving in the longitudinal direction.

Since the pressing force in this case corresponds to the tension generated in the webbings 10, 14, if a large webbing tension is generated, a large locking pressure can be obtained.

As a result of the middle part of the webbing 10 being locked in the event of a vehicle emergency, the lengths of the shoulder restraint part and the waist restraint part do not change, and the occupant 12 is reliably restrained by the webbings 10 and 14, ensuring safety. Secured.

Further, in the above embodiment, the pair of arms 28, 30
Although the explanation has been made using the roller 34,
If the lock bar 40 or 42 has a rough surface to increase the frictional force between it and the webbing, the arm and lock bar can be made into a single piece. Further, the roller 34 is not limited to being rotatably supported by the arm, but may be fixed in some cases.

As explained above, the webbing coupling device according to the present invention has a pair of arms curved in opposite directions provided at the distal end of the inner webbing, a roller for continuously winding the webbing at the intermediate part, and a lock bar at the distal end. In the event of a vehicle emergency, the continuous webbing is clamped and locked between the rollers and the lock bar, so that the continuous webbing can be moved in the longitudinal direction during normal vehicle driving to improve comfort, and in the event of a vehicle emergency, the longitudinal movement can be prevented to protect the occupants. It has an excellent effect of ensuring a secure restraint state.

[Brief explanation of the drawing]

Fig. 1 is a front view from the side of the vehicle showing an embodiment of the webbing connector according to the present invention attached to a seat belt device, Fig. 2 is a front view showing an embodiment of the present invention, and Fig. 3 2 is a side view of the embodiment shown in FIG. 2, FIG. 4 is a sectional view taken along the line of FIG. 2, and FIG. 5 is an operational view of FIG. 4. 10...Continuous webbing, 12...Inner webbing, 16...Shoulder restraint part, 18...Waist restraint part, 20...Webbing connector, 28, 30...
...Arm, 34...Roller, 40, 42...Lock bar.

Claims (1)

[Scope of utility model registration request] In a webbing connector that is attached to the tip of the inner webbing and folds back the middle portion of the continuous webbing, one side of the continuous webbing serves as a shoulder restraint and the other serves as a waist restraint. a pair of arms curved in opposite directions; a roller that is pivotally supported by a curved elongated hole in the intermediate portion of the arms, folds back the intermediate portion of the continuous webbing, and moves toward the tip of the arm when the tension of the webbing increases; A webbing connection characterized in that a lock bar is attached to the tip of the pair of arms and clamps the intermediate portion of the continuous webbing between the roller and the roller when the roller moves, thereby preventing the webbing from moving in the longitudinal direction. Ingredients.