JPH0256257B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention is for pushing the seat belt forward of the passenger when he/she is seated in a car seat to put on the seat belt easily. This invention relates to a three-point seat belt attachment assisting device for automobiles.

Prior Art Automobile seat belts have the effect of greatly reducing the degree of injury to passengers in the event of a collision, etc., and their wearing is strongly recommended.

The most commonly used seat belt for this purpose is the so-called three-point seat belt, which has one end fixed either above or below the center pillar diagonally behind the passenger. A shoulder belt, the other end of which is retractably connected to a retractor provided above or below the center pillar, is pulled out forward over the passenger's shoulders, and a tongue plate is slidably attached to the shoulder belt. By inserting and locking the buckle into a buckle that stands on the floor opposite the center pillar, the passenger can cross the front of the body diagonally from one shoulder, turn back at the buckle, and cross the abdomen. The shoulder belt attached in this manner allows the seat to be held safely. The retractor used for this seat belt locks the pull-out operation of the shoulder belt when an impact load is applied, preventing the body from moving forward rapidly in the event of a collision.
It is easy to pull out when putting on the vehicle, and furthermore, when the shoulder belt is removed when getting off the vehicle, the shoulder belt can be automatically retracted using a spring. It is.

The safety of seatbelts with this structure is widely understood, but to put them on, it is necessary to twist the body considerably and pull out the shoulder belt diagonally to the rear by hand. It is also widely recognized that this is extremely troublesome.

Therefore, when the passenger is seated, there is a need for a device that can push the shoulder belt diagonally to the rear forward to a position where the passenger can easily reach it. As a conventional technique, for example, a winding mechanism that uses a motor to feed out a wire having a rigidity that can be pushed and pulled is built into a door next to the passenger's seat.
There is a known device in which when the wire extends along a guide attached to the inner surface of the door, the buckle portion of the shoulder belt, which is secured to the tip of the wire, can be pushed forward (Kokoku Sho 52-27470).
Publication No.).

In addition, the shoulder belt is pushed out by a semicircular arm provided on the back side of the seat, and the tongue plate is automatically locked into a buckle provided at one end of a cover of the same shape for storing the arm. A seat belt device is also known (Japanese Patent Publication No. 52-12449). However, in this case, the arc-shaped cover itself on the back side of the seat acts as a part of the restraining member to restrain the forward movement of the passenger's body, so it is simply a seat belt. The present invention is different from the present invention in its purpose, structure, and effects, since it is not limited to an auxiliary device for the seat belt device, but also realizes the safety function as a seat belt device as a whole.

Problems to be Solved by the Invention However, when using the first prior art, the entire device needs to be incorporated into the door of a car, which not only makes it extremely difficult to install it in an existing car, but also makes it difficult to install the device into the door of the car. Since the guide is provided along the inner surface of the passenger, the guide will not hang over the passenger's clothing and damage it when the passenger gets on and off the vehicle, or may hit an exposed part of the body and cause unexpected injury. There was a strong possibility that this would happen.

Furthermore, since the second device itself forms a safety device, its performance is required to be extremely strict, and therefore it is difficult to easily install it in existing automobiles. Ta.

SUMMARY OF THE INVENTION In view of the problems of the prior art, an object of the present invention is to attach the shoulder belt of the three-point seat belt attached to the center pillar to the front of the passenger seated on the seat by attaching it to the rear of the seat of the automobile. To provide a new three-point seatbelt wearing assist device for an automobile, which can be pushed out and, therefore, can greatly reduce the troublesomeness when putting on a seatbelt.

Means for Solving the Problems The configuration of the present invention for achieving the object is that a winding mechanism is formed by a drive motor, a winding drum, and a flexible and rigid wire; , integrally forming an arcuate sheath that regulates the protruding and entering direction of the wire, further comprising a push rod that is slidably housed in the sheath and is expandable and retractable in the arcuate direction regulated by the sheath; The gist is that the midway part of the shoulder belt, which is diagonally behind the passenger, is pushed out and conveyed in front of the passenger by a push rod.

Function When using this configuration, the entire device is attached to the vehicle body or backrest behind the seat, and the guide member at the tip of the push rod engages with the midway portion of the shoulder belt attached to the center pillar. , when the passenger is seated on the seat, if the drive motor is energized and the wire is fed out,
As the wire advances, the push rod extends in an arcuate direction regulated by the arc-shaped sheath, and at this time, the shoulder belt is pushed out by the push rod and bypasses the passenger's side,
It can be pushed out in front of the passenger in a chevron-shaped position. Therefore, the passenger can easily put on the seat belt by inserting and locking the tongue plate attached to the shoulder belt transported forward into the buckle on the other side. is something that can be completed.

Furthermore, once the passenger has finished fastening the seat belt, the push rod can be retracted into the sheath by manually or by driving the drive motor in the reverse direction using a timer. There is no risk of hindering the driving operation of the vehicle by the occupants.

Example Examples will be described below with reference to the drawings.

Automotive three-point seat belt attachment assist device M
includes a winding mechanism 10, an arc-shaped sheath 21 formed integrally with the winding mechanism 10, and this sheath 21.
The push rod 22 is slidably installed inside the push rod 22 (FIGS. 1 and 2).

The winding mechanism 10 includes a drive motor 11 and a winding drum 12, and a flexible and rigid wire (not shown) is installed inside the winding drum 12. That is, when driving the drive motor 11 in normal rotation, the flexible and rigid wire is let out,
Furthermore, when driving the drive motor 11 in reverse, the flexible and rigid wire is wound up. Here, a synthetic resin or steel strip can be used as the flexible and rigid wire, and the entire winding mechanism 10 is widely used as a telescopic drive mechanism for a motor-driven rod antenna, for example. Commercially available products can be used as they are.

An arc-shaped sheath 21 is integrally formed in the winding mechanism 10, and the direction of the protrusion and inflow of the wire fed out by the drive motor 11 is regulated by the direction of the sheath 21. .

The push rod 22 is a two-stage arcuate telescopic rod that is slidably installed inside the sheath 21, and includes a base end member 22a and a distal end member 22b. Tip side member 22b
It is a pipe material that can be internalized, while the tip side member 2
2b is a solid bar. It is assumed that the distal end of the wire is connected to the proximal end of the distal end member 22b, and that the push rod 22 as a whole is formed in an arc shape having the same radius of curvature as the sheath 21.

When driving the drive motor 11 to move the wire (not shown) forward or backward, the sheath 21, the proximal end member 22a and the distal end member 22b of the push rod 22 can be telescopically expanded and contracted in this order, Further, the direction of expansion and contraction is the arc direction of the sheath 21. Therefore, in order to prevent relative rotation between the sheath 21 and the push rod 22, which would make the direction of expansion and contraction of the push rod 22 inaccurate, the sheath 21 and the push rod 22 should have a square cross section, or if they have a circular cross section, an appropriate circumference should be set. It is good to have a stop.

A guide member 23 is attached to the distal end of the distal end member 22b of the push rod 22. The guide member 23 is for ensuring the engagement between the shoulder belt S and the push rod 22 when the shoulder belt S forming the seat belt is pushed out by the tip of the push rod 22. It is an open U-shaped member.

The three-point seat belt attachment assisting device M for an automobile having such a configuration is used by being attached to the vehicle body behind the seat St of the automobile (FIG. 3).

Diagonally rear center pillar of car seat St
A shoulder belt S forming a three-point seat belt is attached to the CP. That is, the upper end of the shoulder belt S is connected to the center pillar via the metal fitting S1.
While it is rotatably fixed to the upper part of the CP (Fig. 2), the lower end is connected via a retractor S2.
It is fixed below the center pillar CP. Also,
A tongue plate S3 is attached to the shoulder belt S so as to be slidable within a predetermined range along the longitudinal direction of the shoulder belt S. In addition, shoulder belt S
When not using it, the retractor S2
The center pillar CP is stretched vertically by the CP.

The attachment assisting device M is attached to the vehicle body behind the center pillar CP. At that time, the guide member 23 at the tip of the push rod 22 is attached to the center pillar.
Located behind the shoulder belt S along the CP, and
Push rod 2 regulated by sheath 21
2 extends diagonally upward from the lower back of the seat St in a circular manner, bypassing the side of the body Bd of the passenger seated on the seat St,
It shall be designed so that it can be projected forward.

Now, after the passenger is seated on the seat St, if the forward switch (not shown) is turned on, the drive motor 11
rotates and the push rod 22 extends. At this time, the guide member 23 at the tip of the push rod 22 engages with the midway portion of the shoulder belt S, so the shoulder belt S is pushed out by the push rod 22 and bypasses the side of the passenger's body Bd. It is folded back into a chevron shape by the tip of the push rod 22 and transported forward (as shown by the two-dot chain line in FIGS. 2 and 3). Also, at this time, the lower part of the shoulder belt S is
The push rod 22 is extended from the retractor S2 and is therefore capable of exerting a pushing force sufficient to resist a spring (not shown) that applies force in the direction of retracting the shoulder belt S within the retractor S2. do.

In this way, the shoulder belt S pushed out in front of the body Bd can be easily grasped by the passenger, so the passenger can then grab the shoulder belt S.
3 into the buckle Bk erected on the floor opposite the center pillar CP and locking both, the seat belt can be completely fastened.

Subsequently, when a reverse switch (not shown) is operated, the drive motor 11 is reversely rotated, so that the push rod 22 is housed in the sheath 21 and returns to the initial standby position.

When a passenger exits the vehicle, if the tongue plate S3 and buckle Bk are unlocked, the shoulder belt S is retracted by the retractor S2 and returned to its original position along the center pillar CP, so that the next time When riding, the above-described pushing operation can be repeated by driving the drive motor 11 in normal rotation.

In FIG. 3, the seat St is shown on the driver's seat side, but it goes without saying that the present invention can also be applied to the seat St on the passenger's seat side. Further, it goes without saying that the shoulder belt S forming the seat belt may be of a type in which the retractor S2 is disposed above the center pillar CP.

Furthermore, the guide member 23 attached to the tip of the push rod 22 allows the guide member 23 to
It can be changed to a letter-shaped one (Figure 4).
When storing the push rod 22 in the sheath 21, it is possible to reduce the possibility that the guide member 23 will get caught on the passenger's clothes or the like.

Further, the push rod 22 is connected to the base end member 22.
It is possible to use not only a two-stage type consisting of a and the distal end member 22b, but also a single-stage type consisting of a single member, or a multi-stage type using three or more members. In particular, when a multi-stage type is used, the length of the sheath 21 for housing the push rod 22 can be shortened, which is advantageous because the degree of freedom in installing the entire device is increased.

After the push rod 22 extends and pushes out the shoulder belt S, the timing for retracting the push rod 22 may be determined by the operation of a retraction switch or by automatic operation using a timer. Furthermore, the timing of the extension of the push rod 22 is determined by the door closing and the seat St.
It may also be possible to detect the completion of seating of the passenger by using an appropriate detection switch.

Furthermore, although this invention is intended for additional installation on existing automobiles,
Of course, it is also possible to equip it in advance. When installing it on a car, instead of attaching it to the vehicle body behind the seat St, the entire push rod 22 except the tip is attached to the seat St.
It may be incorporated into the backrest of the

Effects of the Invention As explained above, according to the present invention, a winding mechanism is formed by a drive motor, a winding drum, and a flexible and rigid wire, and an arcuate sheath is integrated into this winding mechanism. At the same time, a push rod is provided that is expandable and retractable in an arcuate direction regulated by this sheath, and the midway portion of the shoulder belt diagonally behind the passenger is connected to the front of the passenger via a guide member at the tip of the push rod. By pushing out the seat belt, the passenger seated in the seat can put on the three-point seat belt.
Since there is no need to twist the body to pull out the shoulder belt, there is an excellent effect that the seat belt can be fastened smoothly without any inconvenience.

In addition, it is a small and simple device, and since it is just a mounting aid and does not form part of the safety equipment, it is extremely practical in that it is extremely easy to retrofit and install on existing cars. There are also some effects.

[Brief explanation of the drawing]

Figures 1 to 3 show the embodiment, Figure 1 is a plan view of the push rod stored in the sheath, Figure 2 is a perspective view of the push rod in an extended state, and Figure 3 shows the state of use. FIG. FIG. 4 is a plan view of main parts corresponding to FIG. 1 showing another embodiment. M...Automobile three-point seat belt attachment aid, S...Shoulder belt, CP...Center pillar, 10...
Winding device, 11... Drive motor, 12... Winding drum, 21... Sheath, 22... Push rod, 2
3...Guide member.

Claims (1)

[Claims] 1. A winding mechanism including a drive motor, a winding drum driven by the drive motor, and a flexible and rigid wire wound around the winding drum; The wire is provided with an arc-shaped sheath that regulates the direction in which the wire protrudes and enters, and a push rod that is slidably housed inside the sheath and is extendable and retractable in the arc direction regulated by the sheath, and the push rod is open on the front side. A three-point seat belt attachment assisting device for an automobile, characterized in that the guide member is provided at the tip, and the midway portion of the shoulder belt located diagonally behind the passenger is pushed out and conveyed in front of the passenger through the guide member. .