JPS6119962Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a guide device for a seat belt of a vehicle.

In a conventional vehicle seatbelt in which a guide ring that guides the webbing is fixed to the side of the seat cushion via the lower part of the support bar, the guide ring 01 is fixed as shown in Fig. 1. The seat cushion 05 located relatively rearward is designed to easily restrain the occupant seated on the seat 04 with the webbing 02, but on the other hand,
When the webbing 02 is pulled out from the retractor (ELR) 03 or taken up by the retractor 03, the webbing 02 may rub against the seat, making it difficult to pull out or rewind. Seat bag 06 for getting passengers on and off
When the seat is moved forward, the webbing 02 is caught between the seat cushion 05 and the seat bag 06, which has the disadvantage that the above-mentioned problems are further exacerbated. If the guide ring 01 that avoids these drawbacks is located relatively forward of the seat cushion 05, an unnecessary distance d will be created between the occupant 07 and the webbing 02, as shown in Fig. 2, and the restraining performance of the webbing 02 will be reduced. In addition, it may cause trouble for passengers to get on and off, and if the guide ring 01 is fixed inside the seat cushion 05 (not shown), it may interfere with the operation of the shift tray, handbrake, etc. Furthermore, there was a fear.

The present invention was made to eliminate the drawbacks of the conventional fixed guide ring type.The present invention is a seat structure in which the guide ring is normally located at the rear and is moved forward in conjunction with the forward folding of the seat back. Provides a belt guide device.

The present invention will be explained below based on an embodiment shown in FIG. In this embodiment, the guide device is attached to the left side of the seat cushion 1, the guide ring 6 is formed in the shape of a lever, the middle part is pivoted 7 to a bracket 10 attached to the seat cushion, and the upper end is attached to the ring. An energized return spring 9 is stretched between the lower end of the bracket 10 and the lower end of the bracket 10, which forms part 8 and draws the lower end forward. Reference numeral 11 denotes a back-and-forth swing guide frame for the guide ring 6. Reference numeral 2 denotes a seat bag, the frame arm 3 of which is pivotally supported by a pivot pin 4 at the rear left side of the seat cushion 1 so as to be rotatable back and forth, and the downwardly extending tip of the pivot pin forms a claw portion 5. There is. A rotating plate 12 that rotates coaxially is attached to the pivot pin 4,
The rotation plate 12 engages with the claw portion 5 of the frame arm 3 that rotates counterclockwise in the drawing, and receives only the transmission of the rotation movement in one direction. (see figure), and one end of which is pivotally supported on the lower end of the guide ring 6, and the other end of a connecting rod 14 is pivotally supported. Thus, when the seat back 2 is in the normal upright state, the connecting rod 14 pulled by the return spring 9 via the lower end of the guide ring 6 presses the hooking protrusion 13 against the claw portion 5, and The length of the ring portion 8 is set so as to maintain the ring portion 8 in a normal predetermined position relatively rearward of the seat.

It is preferable that the shaft support 7 of the guide ring is located below the shaft support pin 4 of the seat back, and that the seat back is on the same horizontal level as the ring portion 8 when the seat back 2 is in the normal upright position. For example, it is rotated so that the distance between the ring part 8 and the surface of the seat back 2 on the same horizontal level when the seat back 2 is tilted forward and the guide ring 6 that interlocks with this is also tilted forward is greater than the distance between the ring part 8 and the surface of the seat back 2 on the same horizontal level. It is possible in design to set mutual relationships such as the size of the rotating arm of the connecting rod pivot point in the moving plate 12, the size of the rotating arm of the connecting rod pivot point in the guide ring 6, and the size of the rotating arm of the ring portion 8. That's more desirable. In the figure, 15 is a cover attached to the bracket 10.

Since the present invention is configured as described above, the rotating plate 12 is always supported by the kick of the claw portion 5 as the seat bag 2 moves forward and by the tensile force of the return spring 9 via the connecting rod 14. In other words, as a result, the ring portion 8 of the guide ring is automatically held at its longitudinal position corresponding to the longitudinal posture of the seat bag 2. Therefore, when the seat back 2 is in the normal upright position, the ring portion 8 of the webbing guide is at the rearmost position, preventing unnecessary and harmful gaps from being created between the seated occupant and the webbing, and improving the occupant restraint function of the webbing. is sufficient. When the winding device winds up the webbing when the occupant leaves the seat, or when the occupant pulls out the webbing to put on the webbing,
The friction between the webbing and the sheet shows the same resistance as long as the ring part is in the same position as the conventional one, but
The ring portion 8 of the present invention is in a position where it is easy to grasp, and it is also easy to move it forward against the elasticity of the return spring 9 because the rotation plate 12 can freely rotate counterclockwise. Therefore, if necessary, the occupant can intermittently move the ring portion 8 forward to reduce the resistance of the webbing, or alternatively, tilt the seat back 2 forward to move and hold the ring portion 8 slightly forward. By doing so, the above-mentioned resistance can be similarly reduced. When the seatback 2 is tilted forward more than the seatback 2 for getting on and off the rear seat occupant, as is already clear, the ring portion 8 moves forward and downward in conjunction with the forward tilting of the seatback to escape from the forward-tilting contact of the seatback. Therefore, it is possible to avoid an increase in the rubbing resistance between the webbing and the seat and the webbing being caught between the seat cushion 1 and the seat bag 2 as in the conventional case. In addition, the ring portion 8 is attached to the seat bag 2.
In the normal upright position, it is held at the rearmost position, so it does not interfere with passengers getting in and out of the seat, and there is no risk of interfering with the operation of the shift lever, handbrake, etc. .

[Brief explanation of the drawing]

Figures 1 and 2 show an example of a conventional one. Figure 1 is a perspective view of a seatbelt attached to the left side of the seat cushion in the front left seat, and Figure 2 is a perspective view of a seatbelt attached to the passenger. An overhead view of the webbing shown in FIG. 3 shows an embodiment of the present invention, and FIG. FIG. 2 is an enlarged perspective view of the moving plate 12 seen from the back side. 1: Seat cushion, 2: Seat back,
3: Frame arm, 4: Pivot pin, 5: Claw, 6:
Guide ring, 7: Pivot support, 8: Ring part, 9: Return spring, 12: Rotating plate, 13:
Hook protrusion, 14: Connection rod.

Claims (1)

[Scope of utility model registration request] In a vehicle seat belt having a structure in which a guide ring for guiding the webbing is attached to the seat cushion of a seat that folds forward, the guide ring is rotatably supported in the middle by the seat cushion, a ring portion is formed at the upper end, and a ring portion is formed at the lower end. One end of the extending connecting rod is pivotally supported, and the lower end thereof is configured as a lever equipped with a return spring that pulls and biases the rod forward, and a pivot plate is attached to the pivot pin that rotatably supports the seat back frame arm. It is rotatably mounted and the other end of the connecting rod is pivotally supported on the rotary plate, and it engages with a claw formed at the tip of the frame arm and receives the backward movement of the claw to move the connecting rod. A seatbelt guide device that is provided with a hook protrusion that rotates a rotating plate in the direction of moving backwards.