JPH0141638Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a passive seat belt device in which a member for guiding the movement of the seat belt is moved back and forth by a motor.

In order to facilitate the attachment and detachment of seatbelts, various passive seatbelt devices have been proposed in which the seatbelt can be automatically attached and detached when an occupant gets on and off the vehicle.

As such a passive seat belt device, a track such as a rail is provided in the longitudinal direction of the vehicle center section on the side of the seat, and an arm, which is a guide member that guides the movement of the seat belt, is engaged with this track. A device that is positioned at the front to form a space between the seat and the seat belt for the occupant to fit into, is positioned at the rear to allow the occupant to attach the seat belt, and furthermore, the arm is moved back and forth by a motor. There is.

In such a motor-driven passive seat belt device, in the unlikely event that the motor fails, the guide member may stop at the forward position, that is, the position where the belt is not attached. In this case, a notch for attaching and detaching the seat belt is provided in the through-ring part of the arm, and when the arm stops at the forward position, the seat belt is removed from the notch.
If the seatbelt is used as a point-type seatbelt, or if the seatbelt is detachable via a buckle on the arm, the buckle is fixed separately near the arm's retracted position, and the arm is placed in the forward position. When the vehicle stops at a certain position, the seat belt can be removed from the arm, secured to a separately fixed buckle, and used as a regular three-point seat belt, without compromising its function as a seat belt. do not have.

However, in the case of the above-mentioned seat belt device, even if it functions as a seat belt, the arm remains stopped at the forward position, so the change operation lever, handbrake lever, etc. provided on the floor cannot be operated. A possible problem is that it becomes difficult to operate the parts.

In order to solve this problem, it is conceivable to interpose a clutch mechanism between the motor and the drive gear, but the mechanism itself becomes complicated and costs increase, so it cannot be said to be an optimal means.

The present invention was developed to improve the above-mentioned problem, and allows the arm to be moved to any position by manual operation when the motor of a motor-driven passive seat belt device fails. It is an object of the present invention to provide a passive seat belt device for a vehicle in which an arm can be moved extremely easily without impairing the operability of a change operation lever or the like.

In order to achieve the above object, the present invention disposes a motor that moves the arm back and forth along a track provided on the side of the seat in front of the track, and connects the drive shaft of this motor to a manually operated member such as a wrench or handle. The gist of this is that it can be rotated in forward and reverse directions.

An example of the implementation of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of the interior of an automobile to which the seat belt device of the present invention is suitable, FIG. 2 is a side view of the interior of the vehicle, and FIG. A console 3 is located in the center of the vehicle between the driver seat 1 and the passenger seat 2 in the front and rear direction.
has been set up. The front portion 3a of the console 3 projects further forward than the front end portions of the seat cushions 1a, 2a, and a retractor 5 for retracting the seat belt 4 is provided at the rear.

A change operation lever protrudes from the upper surface of the front portion 3a of the console 3, and a hand brake lever 7 protrudes forward from the upper surface of the rear portion, and slits 8, 8 are provided on both sides of the upper surface of the console 3 in the front and rear direction. is formed, and this slit 8
An arm 9, which is a guide member that can be moved back and forth by a drive mechanism to be described later, faces upward.
The inner belt 4a led out from the retractor 5 is inserted into the through ring portion 10 formed at the upper part of the arm 9, and the outer belt 4b is inserted into the slip ring 11 attached to the tip of the inner belt 4a. One end of the outer belt 4b is fixed to a stopper 13 attached to the sash of the door 12, and the other end is fixed to the side lining of the door 12 via a buckle 14. Incidentally, FIG. 2 shows a two-point type without the slip ring 11.

Further, in the front side of the console 3 described above, there is formed an insertion hole 16 for a handle 15 for manually rotating a motor serving as a drive source.

Further, a drive gear 19 rotated by a motor 18 is disposed at the front part of the console 3.
The rotation of the drive gear 19 causes the arm 9 to move back and forth along the track. As shown in FIG. 2, the front part of the console 3 housing the drive gear 19 is located in the foot space S below the instrument panel 31 in front of the front end surfaces of the seat cushions 1a and 2a.
I try to be present. In addition, if the seat cushion is movable in the front-rear direction via a slide rail, etc., when the seat cushion is located at the rearmost position, the area in front of the console 3 is lower than the front end surface of the seat cushion. It is at least necessary that the front part faces the foot space S.

FIG. 4 is a sectional view showing the internal structure of the console 3, and FIG. 5 is a sectional view of the drive section of the arm 9.
As shown in FIG. 4, a track 17 is built in the front and back direction inside the console 3, and an arm 9 is mounted on this track 17.
It is slidably engaged with the base 9a of. and,
A drive gear 19 rotated by a motor 18 is disposed in the console front part 3a in front of the track 17, and a tape 20 is stretched between the drive gear 19 and a driven gear provided at the rear of the console 3. Fixing the base 9a of the arm 9 to the tape 20,
By rotating the motor 18 in the forward or reverse direction, the arm 9 is caused to move forward or backward. Further, when the arm 9 moves backward to a predetermined position, the arm base 9a comes into contact with a limit switch 21 disposed near the rear of the track 17, thereby stopping the rotation of the motor 18.

Further, as shown in FIG. 5, the shaft 22 of the motor 18
A worm gear 23 is fitted to the worm gear 23, and a worm wheel 25 fitted to a drive shaft 24 is meshed with the worm gear 23, while the drive gear 19 is fitted to the drive shaft 24. and drive shaft 24
Hole 1 of the console 3 is located on the end face of the console 3 side.
A hexagonal hole 25 is drilled at a position corresponding to 6, the hexagonal end of the handle 15 is inserted into the hole 25, and the drive shaft 24 can be moved in either forward or reverse direction by manual operation by turning the handle 15. It can also be rotated.

In the above, when the door 12 is opened, this operation is detected by the switch, and the motor 18 is driven to move the arm 9 forward. Then, the seat belt 4 is pulled out from the retractor 5, and a space is formed between the seat and the seat belt 4 in which the occupant can get in. Also, the passenger is seated on the seat and the door 12 is opened.
When the seat belt 4 is closed, this movement is detected and the motor 18 is driven in the opposite direction to the above direction, the arm 9 is moved backward, the seat belt 4 is retracted by the retractor 5, and the seat belt 4 is attached to the occupant.

If the motor 18 fails during such operation and the arm 9 stops at the forward position, the handle 15 can be inserted into the hole 25 formed in the drive shaft 24 and the drive gear 19 can be changed by manually turning the handle 15. By rotating the arm 9 and returning the arm 9 to the retracted position, the seat belt 4 can be fastened in that state without interfering with the operation of operating members such as the change operating lever 6 or the hand brake lever 7.

FIG. 6 shows another embodiment, in which a motor 18 is disposed in the front part of the console 3, and a recess 27 is formed in the side surface of the console 3, and the motor 18 rotates the motor 18 in the recess 27. A hole 28 is formed through which the drive shaft 24 to be inserted projects, a handle 29 is fixed to the tip of the drive shaft 24 projecting from the hole 28, and a cap 30 that is removable from the outside is placed over the recess 27.

With this configuration, if the motor 18 fails and the arm 9 stops at the forward position, simply remove the cap 29 and turn the handle 28 by hand, and the drive gear 19 will rotate in the same way as described above. can be moved to the retracted position.

Incidentally, in the illustrated example above, a tape driving type is shown, but it goes without saying that a spiral wire driving type may also be used.

As described above, according to the present invention, the drive shaft, that is, the drive gear, of the passive seat belt, which is configured to move the arm back and forth along the track by motor drive, is connected to a manually operated member such as an integrated or separate handle. Therefore, since it is rotatable, even if the motor breaks down, the arm can be moved to any position, such as the backward position, without making it difficult to operate the change control lever, etc.
Furthermore, since the motor is installed in front of the track, the manual rotation of the drive shaft rotated by the motor is performed in the front part of the seat cushion and in the footwell space below the instrument panel.
It has many advantages such as extremely simple operation.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the invention,
Fig. 1 is a perspective view of the front part of the passenger compartment to which the passive seat belt device according to the present invention is applied, Fig. 2 is a side view of the front part of the passenger compartment, Fig. 3 is a perspective view of the console, and Figure 4 is a perspective view of the front part of the passenger compartment.
5 is a sectional view of the inside of the console, FIG. 5 is a sectional view of the drive section, and FIG. 6 is a sectional view similar to FIG. 4 showing another embodiment. In the drawings, 1 and 2 are seats, 4 is a seat belt, 9 is a guide member, 15 and 29 are operating members, and 17
18 is a motor, and 24 is a drive shaft.

Claims (1)

[Scope of utility model registration request] A track is provided in the longitudinal direction of the center of the vehicle on the side of the seat, and the seatbelt is moved by a guide member that moves back and forth along this track, so that the seatbelt is automatically put on and taken off by the occupant. In a passive seat belt, a motor for moving the guide member back and forth is disposed in front of the track, and the drive shaft of the motor can be rotated forward and backward by manual operation via an operating member. passive seat belt device.