JP3307303B2 - Vehicle seat belt device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt device for a vehicle, and more particularly to a seat belt device having a winding device installed in a roof trim.

[0002]

2. Description of the Related Art In the case of a front seat of an automobile, a take-up device (ELR) is installed in an adjacent center pillar, and an occupant can be restrained to the front seat by a seat belt pulled out therefrom. (A similar technique is disclosed in Japanese Patent Laid-Open No. 7-89.
409). On the other hand, in the case of the rear seat, the rear pillar is not necessarily provided with a structure in which the take-up device can be installed. Therefore, depending on the type of vehicle, the rear pillar may be set in the roof trim above the occupant.

[0003] Such a wind-up device installed on a roof is installed in a roof trim behind an occupant's head, and a seat belt pulled out from the wind-up device is pulled through an opening formed in the roof trim into a vehicle interior. The occupant can be restrained by the seat belt by guiding the seat belt to the occupant side and engaging the tongue provided at the tip of the seat belt with the buckle of the seat on which the occupant sits. When the seatbelt is not used, the seatbelt is wound up and stored in the winding device, and the tongue at the tip of the seatbelt hangs downward from the opening of the roof trim.

[0004]

However, in such a conventional technique, the tongue provided at the front end of the seat belt hangs from the opening of the roof trim formed behind the occupant's head. Since the tongue is stored in the state, the position of the tongue is far from the occupant, and it is difficult for the occupant to reach the tongue during use.

In addition, since the used seat belt is wound up and retracted rearwardly by the winding device, the tongue at the front end of the seat belt may hit the surrounding rear glass or the like due to the momentary force.

The present invention has been made by paying attention to such a conventional technique, and provides a vehicle seat belt device in which a seat belt can be easily pulled out and a tongue at the front end of the seat belt does not hit a peripheral portion when retracted and stored. Is what you do.

[0007]

According to the first aspect of the present invention,
A seat belt winding device is installed in a trim located above the vehicle, and the seat belt is pulled out from the winding device toward an occupant in the vehicle compartment, and a tongue provided at a tip of the seat belt is attached to the seat. In a vehicle seat belt device for engaging and restraining an occupant, one end protrudes from the opening of the trim to the occupant side along the seat belt at the lower end of the winding device, and the other end is wound by the winding device. The arm that abuts the seat belt from below is rotatably supported, and a holding portion is formed at one end of the arm, through which the pulled-out seat belt can be inserted, and into which the tongue cannot be inserted. However, according to the amount of winding of the seat belt with which the other end abuts, the seat belt is rotated upward when the seat belt is wound and is positioned near the trim, and is rotated downward when the seat belt is pulled out to face the occupant. A.

According to the first aspect of the present invention, the tongue at the front end of the seat belt is housed in one end of the arm, so that the tongue is located closer to the occupant than the trim opening, and the seat belt is easily pulled out during use. Become. In addition, the fact that the tongue is stored at one end of the arm means that the tongue is separated from the peripheral part such as the rear glass, so that even when the seat belt is wound up and stored, the tongue does not hit the peripheral part. Since the other end of the arm is configured to contact the seat belt wound by the winding device from below, the winding amount (winding diameter) increases when the seat belt is wound. One end of the arm is pivoted upward to be positioned near the trim and does not obstruct the occupant. Conversely, at the time of pulling out the seatbelt in which the winding amount (winding diameter) is small, one end of the arm is turned downward to face the occupant, so that the arm can be used as a seatbelt guide.

According to a second aspect of the present invention, one end of the arm is
It is located at a position offset from the occupant's neck outward in the vehicle width direction when the vehicle turns downward.

According to the second aspect of the present invention, one end of the arm comes to a position offset to the outside in the vehicle width direction from the occupant's neck when the arm is rotated downward, so that the seat belt in use is attached to the occupant's neck. A comfortable wearing feeling of the seatbelt can be obtained.

In the invention according to claim 3, the holding portion of the arm is formed by a slit hole.

According to the third aspect of the present invention, since the holding portion of the arm is formed by the slit hole, the seat belt does not come off from one end of the arm, and the tongue is positioned at the same position, although the structure is simple. Can be stopped.

According to a fourth aspect of the present invention, the winding device is installed in a downwardly protruding portion formed in the trim, and an opening for inserting a seat belt and an arm is formed in a front vertical surface portion of the protruding portion. It is.

According to the fourth aspect of the invention, the opening is formed in the front vertical surface of the bulging portion, and the seat belt and one end of the arm can be guided straight forward from the winding device into the vehicle interior. Therefore, the pullout resistance of the seat belt is reduced, and the shape of the arm can be simplified.

According to a fifth aspect of the present invention, a concave portion is formed in a trim portion at which one end of an arm rises and turns and approaches when the seat belt is wound, and one end of the arm is provided in the concave portion when the seat belt is wound. It is stored in.

According to the fifth aspect of the present invention, since one end of the arm is housed in the recess of the trim, it is possible to prevent the rear view from being deteriorated due to the tongue hanging down from one end of the arm.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. 1 is a rear seat of a wagon car. In front of the rear seat 1, a second seat and a front seat (not shown) are provided. A roof trim 2 is provided above the occupant M sitting on the rear seat 1. Above the roof trim 2, a roof panel 3 is provided.

A downwardly bulging portion 4 is formed at the rear end of the roof trim 2 located behind the head of the occupant M. A rear glass 5 of a back door is located behind the bulging portion 4.

Inside the roof corresponding to the bulging portion 5, a rear roof rail 6 having a closed cross-sectional structure is arranged along the vehicle width direction. It is fixed (in this embodiment, only the right side is shown as a representative).

The take-up device 7 includes a bobbin 9 for taking up a seat belt 8, side panels 10 provided with a take-up mechanism provided on both sides of the bobbin 9, and a lower surface on the rear roof rail 6 formed on the side panel 10. The mounting piece 11 is bolted to the pin, the pin 13 connects the side panels 10 through the support holes 12 formed at the front lower ends of the left and right side panels 10, and the end of the pin 13 comes off. And a stopper ring 14 for preventing the above.

An intermediate portion of the arm 15 is rotatably supported by the pin 13 of the winding device 7.
A through hole 16 in the width direction is formed in the middle part, and the pin 13 passes through the through hole 16. The arm 15 is longer at the front end 17 side as “one end” and shorter at the rear end 18 side as “other end”.

The front end 17 of the arm 15 projects in a slightly curved state from an opening 20 formed in the front vertical surface portion 19 of the bulging portion 4 to a position near the occupant M in the vehicle interior R. At the front end 17 of the arm 15, a slit hole 21 is formed as a "holding portion" along the width direction,
It is located at a position offset to the outside in the vehicle width direction from the neck of the occupant M. The slit hole 21 formed in the front end 17 has a size substantially corresponding to the thickness of the seat belt 8, and the seat belt 8 itself can be freely inserted, but the tongue 22 attached to the front end of the seat belt 8 cannot be inserted. It is. Therefore,
When the seat belt 8 is not used, only the tongue 22 hangs from the slit hole 21 at the front end 17.
When the seat belt 8 is stored, the front end 17 of the arm 15 is stored in the concave portion 2a of the roof trim 2 to prevent the rear view from being deteriorated by the hanging tongue 22.

With the simple structure of the slit hole 21, the seat belt 8 can be inserted freely and the tongue 22 can be stopped at that position, so that the manufacture of the arm 15 is easy. In addition, the opening 20 is the front vertical surface 1 of the bulging portion 4.
9, the seat belt 8 and the arm 1
The front end 17 of the arm 5 can be guided straight forward from the winding device 7 to the vehicle interior R side, so that the withdrawal resistance of the seat belt 8 can be reduced and the shape of the arm 15 can be simplified.

Next, a method of using the winding device 7 will be described. Since the rear end 18 of the arm 15 is in contact with the seat belt 8 wound on the bobbin 9 of the winding device 7 from below, the seat belt 8 is wound on the bobbin 9 when the seat belt 8 is wound. The winding amount (winding diameter) of 8 increases,
The rear end 18 of the arm 15 is pushed downward. Accordingly, the front end 17 of the arm 15 rotates upward and is stored in a position near the roof trim 2 that does not hinder the occupant.

The tongue 22 is connected to the front end 17 of the arm 15.
From the tongue 22
Is located closer to the occupant M than the opening 20 of the roof trim 2, so that the occupant M can easily reach during use, and the seat belt 8
Easy to pull out.

When the seat belt 8 is pulled out, the winding amount (winding diameter) of the seat belt 8 on the bobbin 9 gradually decreases, and accordingly, the rear end 18 of the arm 15 rises, and the front end 17 rises. Rotate down. Arm 15 that has turned down
Is in a state facing the occupant M, and the front end 17 is located outside the occupant M's neck in the vehicle width direction. Therefore, the arm 15 serves as a guide when the seat belt 8 is pulled out, and the seat belt 8 is pulled out smoothly.

The pulled-out seat belt 8 is passed over the shoulder of the occupant M from the outside in the vehicle width direction, is hung on the trunk, and is engaged with a buckle (not shown) formed at the center of the rear seat 1. At this time, since the front end 17 of the arm 15 comes to a position offset from the neck of the occupant M to the outside in the vehicle width direction, the seat belt 8 does not hang on the neck of the occupant M during use, and the seat belt 8 is comfortably worn. A feeling is obtained. Further, the front end 17 of the arm 15 is closer to the head of the occupant M, and the seat belt 8 comes into contact with the occupant's shoulder at a gentle angle, so that the wearing feeling of the seat belt 8 is further improved.

When the seat belt 8 is wound up after the tongue 22 is disengaged after use, the tongue 22 itself is stored at a position far from the rear glass 5. Absent. When the seat belt 8 is wound up, the front end 17 of the arm 15 rotates upward and returns to a position near the roof trim 2 which does not interfere.

In this embodiment, the seat belt device for the occupant M seated on the rear seat 1 of the vehicle is described as an example. However, the present invention can be applied to a seat belt device for a second seat occupant. Further, the present invention can be applied not only to the left and right seats but also to an occupant sitting in the center of the rear seat.

[0030]

According to the first aspect of the present invention, the tongue at the front end of the seat belt is housed in one end of the arm, so that the tongue is located closer to the occupant than the trim opening.
It becomes easier to pull out the seat belt during use. In addition, the fact that the tongue is stored at one end of the arm means that the tongue is separated from the peripheral part such as the rear glass, so that the tongue does not hit the peripheral part even when the seat belt is wound and stored. Since the other end of the arm is configured to contact the seat belt wound by the winding device from below, the winding amount (winding diameter) increases when the seat belt is wound. One end of the arm is pivoted upward to be positioned near the trim and does not obstruct the occupant. Conversely, when pulling out the seat belt where the winding amount (winding diameter) is small,
Since one end of the arm rotates downward and faces the occupant, the arm can be used as a guide for the seat belt.

According to the second aspect of the present invention, one end of the arm comes to a position offset to the outside in the vehicle width direction from the occupant's neck when the arm is rotated downward, so that the seat belt in use is attached to the occupant's neck. A comfortable wearing feeling of the seatbelt can be obtained.

According to the third aspect of the present invention, since the holding portion of the arm is formed by the slit hole, the seat belt does not come off from one end of the arm and the tongue is positioned at the same position while having a simple structure. Can be stopped.

According to the fourth aspect of the present invention, the opening is formed in the front vertical surface of the bulging portion, and the seat belt and one end of the arm can be guided straight forward from the winding device into the vehicle interior. Therefore, the pullout resistance of the seat belt is reduced, and the shape of the arm can be simplified.

According to the fifth aspect of the present invention, since one end of the arm is housed in the recess of the trim, it is possible to prevent the rear view from deteriorating due to the tongue hanging down from one end of the arm.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vehicle interior showing a seatbelt device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a winding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rear seat 2 roof trim 4 bulging portion 7 winding device 8 seat belt 15 arm 17 front end (one end) 18 rear end (other end) 20 opening 21 slit hole (holding portion) 22 tongue R cabin M passenger

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-89409 (JP, A) JP-A-4-169360 (JP, A) JP-A 8-1273111 (JP, A) JP-A-4- 38242 (JP, A) JP-A-5-162613 (JP, A) Japanese Utility Model Application Laid-Open No. 49-68121 (JP, U) Japanese Utility Model Application Laid-open No. 55-27591 (JP, U) Japanese Translation of PCT Application No. 4-5044693 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 22/20-22/26 B60R 22/34

Claims (5)

(57) [Claims] 1. A seat belt winding device is installed in a trim located above a vehicle, and the seat belt is pulled out from the winding device toward an occupant in a vehicle cabin, and is provided at a tip end of the seat belt. A seat belt device for a vehicle that engages a tongue with a seat to restrain an occupant, wherein one end of the lower end portion of the winding device projects from the trim opening to the occupant side along the seat belt, and the other end is wound. An arm that contacts the seat belt wound by the device from below is rotatably supported, and a holding portion is formed at one end of the arm so that the pulled out seat belt can be inserted and the tongue cannot be inserted. One end of the arm is raised and rotated in accordance with the winding amount of the seat belt with which the other end abuts, and is positioned near the trim when winding the seat belt, and is lowered and rotated when the seat belt is pulled out. Vehicle seat belt and wherein the facing to the side. 2. The vehicle seatbelt device according to claim 1, wherein one end of the arm is located at a position offset from the neck of the occupant outward in the vehicle width direction when the arm is rotated downward. 3. The vehicle seat belt device according to claim 1, wherein the holding portion of the arm is formed by a slit hole. 4. A take-up device is installed in a downward bulging portion formed in a trim, and an opening for inserting a seat belt and an arm is formed in a front vertical surface portion of the bulging portion.
The vehicle seatbelt device according to any one of the preceding claims. 5. A concave portion is formed in a trim portion at which one end of an arm rises and turns and approaches when the seat belt is wound, and one end of the arm is housed in the concave portion when the seat belt is wound. The vehicle seat belt device according to any one of claims 1 to 4.