WO2018139437A1

WO2018139437A1 - Seatbelt device for vehicle

Info

Publication number: WO2018139437A1
Application number: PCT/JP2018/001916
Authority: WO
Inventors: 徹遠藤
Original assignee: いすゞ自動車株式会社
Priority date: 2017-01-26
Filing date: 2018-01-23
Publication date: 2018-08-02
Also published as: CN110214100A; JP2018118663A; JP6834531B2; CN110214100B

Abstract

A seatbelt device for a vehicle is provided with: a retractor for winding up one end side of a belt; a buckle that can be connected with the other end side of the belt; and a shoulder anchor that is fixed to the back of a rear seat within a cabin and that guides the belt so as to change the direction thereof. The retractor is positioned on the opposite side from the buckle when viewed in the vehicle width direction from an imaginary line drawn vertically downward from the shoulder anchor.

Description

Vehicle seat belt device

This disclosure relates to a vehicle seat belt device.

A vehicle such as a truck is equipped with a seat belt device for restraining an occupant seated on a vehicle seat.
The seat belt device includes a retractor that winds up one end side of the belt, a shoulder anchor that is fixed to the passenger compartment and changes the direction of the belt, and a buckle that can connect a tongue on the other end side of the belt. The occupant seated on the seat is restrained by the belt by connecting the tongue of the belt via the shoulder anchor to the buckle.

Japanese Unexamined Patent Publication No. 2010-179705

The shoulder anchor has a limited place where it can be fixed in the passenger compartment, and is usually fixed to a pillar in the passenger compartment located directly above the retractor. On the other hand, the shoulder anchor changes the direction of the belt in accordance with the position of the retractor and the shoulder of the occupant so that the belt pulled out from the retractor is stretched from the shoulder of the occupant to the waist.
However, when the shoulder anchor is located directly above the retractor as described above, it is difficult to pull out the belt due to the restriction by the shoulder anchor that changes the direction of the belt.

An object of the present disclosure is to provide a vehicle seat belt device that can improve the ease of pulling out a belt.

A seat belt device for a vehicle according to the present disclosure includes a retractor that winds up one end side of a belt, a buckle that can be connected to the other end side of the belt, and a rear side of a seat in a vehicle cabin so as to change the direction of the belt. The retractor is positioned on the opposite side of the buckle when viewed in the vehicle width direction from a virtual line drawn vertically downward from the shoulder anchor.
According to this seat belt device, the shoulder anchor is located away from the imaginary line on the side opposite to the buckle with respect to the retractor in the vehicle width direction of the passenger compartment. For this reason, compared with the case where a shoulder anchor is located just above a retractor, the angle which the direction of the belt after folding and passing a shoulder anchor and a horizontal direction makes becomes small. As a result, the ease of pulling out the belt can be improved without increasing the size of the shoulder anchor.

Further, the shoulder anchor may have an opening in which an opening through which the belt pulled out from the retractor passes while changing its direction is formed.

Further, the opening of the opening may be formed obliquely with respect to the horizontal direction.

Further, the shoulder anchor may be fixed to a back panel that forms the vehicle compartment.

According to the vehicle seat belt device of the present disclosure, the ease of pulling out the belt can be improved.

FIG. 1 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present disclosure. FIG. 2 is a diagram illustrating an example of the configuration of the seat belt device according to the embodiment. FIG. 3 is a diagram illustrating an example of the configuration of the shoulder anchor. 4 is a cross-sectional view taken along the line AA in FIG. FIG. 5 is a schematic diagram for explaining the angle of the opening with respect to the horizontal direction.

<Configuration of seat belt device>
Before describing the configuration of the seat belt device according to the present disclosure, first, an outline of the vehicle 1 on which the seat belt device is mounted will be described with reference to FIG.

FIG. 1 is a diagram illustrating an example of a configuration of a vehicle 1 according to an embodiment. The vehicle 1 is a pickup truck as an example. As shown in FIG. 1, the vehicle 1 includes a cabin 2 and a loading platform 4.

The cabin 2 is a passenger compartment of the vehicle 1. That is, the cabin 2 is a compartment of the vehicle 1. The cabin 2 is formed by a plurality of panels. For example, the cabin 2 is formed by a front panel, a side panel, a floor panel, a back panel, and the like. The cabin 2 is provided with a vehicle seat on which an occupant is seated. Specifically, a front seat and a rear seat are provided in the cabin 2 as vehicle seats. In addition, a seat belt device is attached to the vehicle seat.

The loading platform 4 is a part on which the luggage is placed. The loading platform 4 is provided behind the cabin 2.

Next, the configuration of the seat belt device 10 according to an embodiment of the present disclosure will be described with reference to FIG.
FIG. 2 is a diagram illustrating an example of the configuration of the seat belt device 10 according to the embodiment. In the present embodiment, the seat belt device 10 provided on the rear seat 3 in the cabin 2 will be described as an example. FIG. 2 is a view of the rear seat 3 and the like viewed from the front seat in the cabin 2 toward the rear side in the horizontal direction. For this reason, the left-right direction when FIG.

The seat belt device 10 is a three-point seat belt device and restrains an occupant seated on the rear seat 3. As shown in FIG. 2, the seat belt device 10 includes a belt 12, a retractor 14, a shoulder anchor 16, and a buckle 18.

The belt 12 is formed in a belt shape, and the other end side in the longitudinal direction is connected to the buckle 18 to restrain the occupant. The belt 12 is a shoulder belt that is stretched obliquely from the shoulder portion of the occupant to the waist portion. Note that the belt 12 may also have a function of a lap belt extending along the vehicle width direction so as to straddle the occupant's waist.

The retractor 14 accommodates one end side in the longitudinal direction of the belt 12 so that the belt 12 can be wound and pulled out. The retractor 14 has a winding portion that winds one end side in the longitudinal direction of the belt 12. The retractor 14 is fixed to the floor panel of the cabin 2, for example.

The shoulder anchor 16 is fixed behind the rear seat 3 and supports the belt 12. Further, the shoulder anchor 16 guides the belt 12 drawn from the retractor 14 so as to change the direction toward the buckle 18. For example, the shoulder anchor 16 turns the belt 12 to change its direction.

The shoulder anchor 16 is provided in the vicinity of the shoulder of the occupant. Thereby, compared with the case where the shoulder anchor 16 is attached to the pillar or ceiling of the cabin 2, the distance between the shoulder anchor 16 and the occupant's shoulder can be shortened, so that the restraint of the belt 12 can be improved.

In the present embodiment, the shoulder anchor 16 is fixed to the back panel 2a located behind the rear seat 3 by a fastening member 40 such as a bolt. Specifically, the shoulder anchor 16 is fixed in the vicinity of the window opening 2b to which the rear window of the back panel 2a is attached. The detailed configuration of the shoulder anchor 16 will be described later.

The buckle 18 is a portion that can be connected to the other end side in the longitudinal direction of the belt 12. Specifically, the buckle 18 can be connected to a tongue attached to the other end side of the belt 12. By connecting the buckle 18 and the tongue, the belt 12 is mounted so as to restrain the occupant.

In this embodiment, although details will be described later, the retractor 14, the shoulder anchor 16, and the buckle 18 have the following positional relationship in order to improve the ease of pulling out the belt 12. Specifically, as shown in FIG. 2, the retractor 14 is located away from the imaginary line L on the side opposite to the buckle 18 when viewed in the vehicle width direction from the imaginary line L drawn vertically downward from the shoulder anchor 16. To do.

<Detailed configuration of shoulder anchor>
A detailed configuration of the shoulder anchor 16 will be described with reference to FIGS. 3 and 4.
FIG. 3 is a diagram for explaining an example of the configuration of the shoulder anchor 16. 4 is a cross-sectional view taken along the line AA in FIG. In FIG. 3, for convenience of explanation, the portion of the belt 12 whose direction is changed by the shoulder anchor 16 is omitted.

The shoulder anchor 16 has a base 20 and an opening 30 as shown in FIG. The shoulder anchor 16 is an integral product in which, for example, a metal base 20 and a resin opening 30 are insert-molded.

The base 20 is a base part obtained by bending a sheet metal member into a hat shape, and is fixed to the back panel 2a (FIG. 2). As shown in FIG. 4, the base 20 is configured such that the belt 12 can pass between the base 20 and the back panel 2a. As shown in FIG. 3, the base 20 has a flat plate portion 22 and a bent portion 24.

The flat plate portion 22 is formed in a flat plate shape and faces the back panel 2a via a gap. The distance between the flat plate portion 22 and the back panel 2a is set to such a size that the belt 12 can be inserted. The back surface 22a of the flat plate portion 22 is a contact portion that can contact the main surface of the belt 12 when the belt 12 is pulled. For this reason, the belt 12 is easily brought into contact with the back surface 22a of the flat plate portion 22, and the force acting on the shoulder anchor 16 is easily dispersed when the belt 12 is pulled.

As shown in FIG. 4, the flat plate portion 22 is formed with a bead 22 b that is a protruding portion protruding from the back surface 22 a to the belt 12. As shown in FIG. 3, two beads 22 b are formed at a predetermined interval in the vehicle width direction along the longitudinal direction of the belt 12. The belt 12 slides with respect to the bead 22b when pulled. Thereby, since the slidability of the belt 12 with respect to the base 20 is improved, the belt 12 is smoothly pulled out from the shoulder anchor 16, and as a result, the ease of pulling out the belt 12 is improved.

Further, the bead 22b has a function of reinforcing the base 20. Thereby, even if an excessive force (moment) acts on the shoulder anchor 16 when the belt 12 is pulled out, the base 20 can be prevented from being deformed.

The bent portion 24 is an extending portion that extends from both ends of the flat plate portion 22 toward the back panel 2a. The bent portion 24 is disposed so as to sandwich both sides of the belt 12 in the short direction, and guides the belt 12. Moreover, the bending part 24 is being fixed to the back panel 2a with the fastening member 40 (FIG. 2).

The opening 30 is configured to be integrated with the base 20 above the base 20. As shown in FIG. 4, an opening 31 through which the belt 12 passes is formed in the opening 30. For example, the opening 31 is formed in a rectangular shape that is slightly larger than the cross-sectional shape of the belt 12. The belt 12 is bent on the back side of the opening 30 in order to pass through the opening 31, and the direction of the belt 12 is changed.

For example, when the belt 12 is pulled out, the belt 12 contacts the edge of the opening 31 of the opening 30, and a force acts on the edge. In the present embodiment, the action point of the opening 30 where the force acts and the fixing point (the portion fixed by the fastening member 40) of the base 20 to the back panel 2a are located close to each other. It is possible to suppress an increase in the moment generated.

Further, since the base 20 is integrally formed with the opening 30, even if the back panel 2a has the window opening 2b (FIG. 2), the shoulder anchor 16 can be provided in the vicinity of the passenger's shoulder. .

Further, the opening 31 is formed obliquely with respect to the horizontal direction so that the belt 12 is obliquely stretched toward the buckle 18. Thereby, the ease at the time of pulling out the belt 12 is improved.

FIG. 5 is a schematic diagram for explaining the angle of the opening 31 with respect to the horizontal direction H. FIG. The angle of the opening 31 with respect to the horizontal direction H is determined as follows.
Here, an angle formed by a direction D1 from the center of the opening 31 toward the retractor 14 (specifically, the winding portion 14a) and a direction D2 from the center of the opening 31 toward the shoulder P1 of the occupant P seated on the rear seat 3 is formed. The direction of the bisector is the direction D3. In the present embodiment, the opening 31 is formed obliquely with respect to the horizontal direction H so that the longitudinal direction D4 of the opening 31 is perpendicular to the direction D3. This is because the easier the belt 12 is pulled out, the closer the angle formed by the longitudinal direction D4 and the direction D3 of the opening 31 is vertical. Further, in this embodiment, the angle formed by the longitudinal direction D4 of the opening 31 and the horizontal direction H is smaller than when the shoulder anchor 16 is positioned directly above the retractor 14, so that the size of the opening 30 is increased. You do n’t have to. As a result, the shoulder anchor 16 can be fixed to the back panel 2a with limited space.

<Effect in this embodiment>
According to the above-described embodiment, the shoulder anchor 16 is fixed to the rear (specifically, the back panel 2a) of the rear seat 3 of the cabin 2. The retractor 14 is located away from the imaginary line L on the side opposite to the buckle 18 when viewed in the vehicle width direction from the imaginary line L (FIG. 2) drawn vertically downward from the shoulder anchor 16.
Thus, since the shoulder anchor 16 is located away from the retractor 14 in the vehicle width direction of the cabin 2, the shoulder anchor 16 is folded and passed through the shoulder anchor 16 as compared with the case where the shoulder anchor 16 is located directly above the retractor 14. The angle formed by the direction of the belt 12 and the horizontal direction H becomes small. As a result, the ease of pulling out the belt 12 can be improved without increasing the size of the shoulder anchor 16 (specifically, the opening 30).

In the above embodiment, the cabin 2 has two rows of seats (a front seat and a rear seat 3), but is not limited to this. For example, the cabin 2 may have one row of sheets.

In the above embodiment, the vehicle 1 is a pickup truck. However, the present invention is not limited to this. For example, the vehicle 1 may be a cab over type truck in which a cab is disposed above an engine.

The technical scope of the present disclosure is not limited to the scope described in the above embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present disclosure.

This application is based on a Japanese patent application (Japanese Patent Application No. 2017-012269) filed on January 26, 2017, the contents of which are incorporated herein by reference.

The vehicle seat belt device of the present disclosure is useful in terms of ease of pulling out the belt.

1 Vehicle 2 Cabin 2a Back Panel 3 Rear Seat 10 Seat Belt Device 12 Belt 14 Retractor 16 Shoulder Anchor 18 Buckle 20 Base 30 Opening 31 Opening

Claims

A retractor that winds up one end of the belt;
A buckle connectable to the other end of the belt;
A shoulder anchor fixed behind the seat in the passenger compartment and guiding the belt to change direction;
With
The retractor is a seat belt device for a vehicle, which is located on a side opposite to the buckle when viewed in a vehicle width direction from an imaginary line drawn vertically downward from the shoulder anchor.
The shoulder anchor has an opening in which an opening through which the belt pulled out from the retractor passes while changing its direction is formed.
The vehicle seat belt device according to claim 1.
The opening of the opening is formed obliquely with respect to the horizontal direction.
The seat belt device for a vehicle according to claim 2.
The shoulder anchor is fixed to a back panel that forms the cabin.
The vehicle seat belt device according to any one of claims 1 to 3.