CN110214100B

CN110214100B - Seat belt device for vehicle

Info

Publication number: CN110214100B
Application number: CN201880008426.8A
Authority: CN
Inventors: 远藤徹
Original assignee: Isuzu Motors Ltd
Current assignee: Isuzu Motors Ltd
Priority date: 2017-01-26
Filing date: 2018-01-23
Publication date: 2021-09-28
Anticipated expiration: 2038-01-23
Also published as: JP6834531B2; JP2018118663A; WO2018139437A1; CN110214100A

Abstract

A seat belt device for a vehicle includes: a retractor that retracts one end side of the seat belt; a buckle connectable to the other end side of the seat belt; and a shoulder fixing member fixed to the back of the rear seat in the passenger compartment, for guiding the seat belt to change its direction. The retractor is located on the opposite side of the buckle as viewed in the vehicle width direction from a virtual line vertically downward from the shoulder anchor.

Description

Seat belt device for vehicle

Technical Field

The present disclosure relates to a seat belt device for a vehicle.

Background

A vehicle such as a truck is mounted with a seat belt device for restraining a passenger seated in a vehicle seat.

The seat belt device includes: a retractor that retracts one end side of the seat belt; a shoulder fixing member fixed to the vehicle compartment to change the direction of the seat belt; and a buckle which can be connected to the tongue at the other end of the seat belt. An occupant seated in the seat is restrained by the seat belt by coupling the tongue of the seat belt passing through the shoulder anchor to the buckle.

[ Prior art documents ]

[ patent document ]

Patent document 1: japanese patent laid-open No. 2010-179705

Disclosure of Invention

[ problems to be solved by the invention ]

The shoulder anchor is fixed to a pillar of the vehicle compartment directly above the retractor, and the location where the shoulder anchor can be fixed in the vehicle compartment is limited. On the other hand, the shoulder anchor changes the direction of the seat belt depending on the position of the retractor and the shoulder of the passenger so that the seat belt pulled out from the retractor is set up from the shoulder of the passenger to the waist.

However, when the shoulder anchor is positioned directly above the retractor as described above, the seat belt is difficult to be pulled out due to the restriction of the shoulder anchor that switches the direction of the seat belt.

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

[ means for solving the problems ]

The seat belt apparatus of a vehicle of the present disclosure includes: a retractor that retracts one end side of the seat belt; a buckle connectable to the other end side of the seat belt; and a shoulder fixing member fixed to the back of a seat in a vehicle compartment, for guiding the seat belt to change its direction; the retractor is located on the opposite side of the buckle as viewed in the vehicle width direction from a virtual line vertically downward from the shoulder anchor.

According to this seat belt device, the position of the shoulder anchor in the vehicle width direction of the vehicle compartment separates the buckle and the retractor from the virtual line toward the opposite side. Therefore, compared to the case where the shoulder anchor is located directly above the retractor, the angle formed between the direction of the seat belt that has been folded back and passed through the shoulder anchor and the horizontal direction is reduced. As a result, the ease of pulling out the seat belt can be improved without increasing the size of the shoulder anchor.

Further, the shoulder anchor may have an opening portion formed with an opening through which the belt drawn out of the retractor passes while changing its direction.

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

Further, the shoulder anchor may be fixed to a rear panel forming the vehicle compartment.

Effects of the invention

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

Drawings

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 a configuration of a seat belt device according to an embodiment.

Fig. 3 is a diagram illustrating an example of the configuration of the shoulder anchor.

Fig. 4 is a sectional view a-a of fig. 2.

Fig. 5 is a schematic diagram illustrating an angle of the opening with respect to a horizontal direction.

Detailed Description

< construction of seat Belt device >

Before describing the configuration of the seat belt device of the present disclosure, first, an outline of a vehicle 1 on which the seat belt device is mounted will be described with reference to fig. 1.

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 van as an example. As shown in fig. 1, a vehicle 1 has a passenger compartment 2 and a loading compartment 4.

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

The container 4 is a part for loading cargo. The cabin 4 is provided behind the passenger compartment 2.

Next, the structure of the seat belt device 10 according to the embodiment of the present disclosure will be described with reference to fig. 2.

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, a description will be given of the seat belt device 10 provided in the rear seat 3 in the passenger compartment 2. Fig. 2 is a view of the rear seat 3 and the like as viewed in a horizontal direction from the front seat to the rear side in the passenger compartment 2. Therefore, the left-right direction when fig. 2 is viewed from the direction facing the reference numerals is the vehicle width direction of the vehicle 1.

The seatbelt device 10 is a 3-point seatbelt device, and restrains a passenger seated in the rear seat 3. As shown in fig. 2, the seat belt device 10 has a seat belt 12, a retractor 14, a shoulder anchor 16, and a buckle 18.

The seat belt 12 is formed in a belt shape, and the other end side in the longitudinal direction is connected to a buckle 18 to restrain the occupant. The seat belt 12 is a shoulder belt that is obliquely installed from the shoulder to the waist of the passenger. The seat belt 12 may have a function of a lap belt extending in the vehicle width direction so as to straddle the waist of the passenger.

The retractor 14 stores one end side in the longitudinal direction of the seat belt 12 so as to be retractable and extendable. The retractor 14 has a winding portion that winds one end side in the longitudinal direction of the seat belt 12. The retractor 14 is fixed to a floor panel of the passenger compartment 2, for example.

The shoulder anchor 16 is fixed to the back of the rear seat 3 and supports the seat belt 12. The shoulder anchor 16 guides the seat belt 12 drawn out from the retractor 14 to change its direction to the buckle 18. Such as the shoulder anchor 16, reverses the direction of the belt 12 in a reversed manner.

The shoulder fixing 16 is provided in such a manner as to be located near the shoulder of the passenger. As a result, the distance between the shoulder anchor 16 and the shoulder of the passenger can be shortened as compared with the case where the shoulder anchor 16 is mounted on the pillar or ceiling of the passenger compartment 2, and the restraining performance of the seat belt 12 can be improved.

In the present embodiment, the shoulder anchor 16 is fixed to the rear plate 2a located behind the rear seat 3 by a fastening member 40 such as a bolt. Specifically, the shoulder fixing member 16 is fixed to the vicinity of the window opening 2b of the rear panel 2a to which the rear window is attached. The shoulder anchor 16 is described in detail below.

The buckle 18 is a portion connectable to the other end side in the longitudinal direction of the seat belt 12. Specifically, the buckle 18 may be coupled to a tongue attached to the other end of the seat belt 12. The buckle 18 is coupled to the tongue, and the seat belt 12 is attached so as to restrain the occupant.

In the present embodiment, as will be described in detail later, the retractor 14, the shoulder anchor 16, and the buckle 18 are in the following positional relationship in order to improve the ease of pulling out the seat belt 12. Specifically, as shown in fig. 2, the retractor 14 is located on the opposite side of the buckle 18 apart from the imaginary line L when viewed in the vehicle width direction from the imaginary line L that is vertically downward from the shoulder anchor 16.

< detailed construction of shoulder anchor >

The detailed structure of the shoulder anchor 16 will be described with reference to fig. 3 and 4.

Fig. 3 is a diagram illustrating an example of the configuration of the shoulder fixing member 16. Fig. 4 is a sectional view a-a of fig. 2. In fig. 3, for convenience of explanation, the portion of the seat belt 12 whose direction is switched by the shoulder anchor 16 is omitted.

As shown in fig. 3, the shoulder fixing member 16 has a base 20 and an opening 30. The shoulder fixing member 16 is an integral member formed by insert-molding a base 20 made of metal and an opening 30 made of resin, for example.

The base 20 is a base portion formed by bending a sheet metal member into a hat shape, and is fixed to the rear plate 2a (fig. 2). As shown in fig. 4, the base 20 is configured to allow the seat belt 12 to pass between the base and the rear plate 2 a. 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 rear plate 2a with a gap therebetween. The distance between the flat plate portion 22 and the rear plate 2a is set to a size that allows the seat belt 12 to be inserted therethrough. The back surface 22a of the flat plate portion 22 is a contact portion that the main surface of the seat belt 12 can contact when the seat belt 12 is pulled. Therefore, the seat belt 12 is easily brought into surface 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 seat belt 12 is pulled.

As shown in fig. 4, the flat plate portion 22 is formed with a bead 22b as a protruding portion protruding from the back surface 22a toward the seat belt 12. As shown in fig. 3, 2 beads 22b are formed at predetermined intervals in the vehicle width direction so as to extend in the longitudinal direction of the seat belt 12. When pulled, the webbing 12 slides relative to the bead 22 b. This improves the slidability of the webbing 12 with respect to the base 20, and therefore the webbing 12 is smoothly pulled out from the shoulder anchor 16, resulting in improved ease of pulling out the webbing 12.

In addition, the rib 22b has a function of reinforcing the base 20. Thus, even if an excessive force (moment) acts on the shoulder anchor 16 when the webbing 12 is pulled out, deformation of the base 20 and the like can be suppressed.

The bent portions 24 are protruding portions protruding from both ends of the flat plate portion 22 toward the rear plate 2 a. The bent portion 24 is disposed so as to sandwich both sides of the webbing 12 in the width direction, and guides the webbing 12. In addition, the bent portion 24 is fixed to the rear plate 2a by a fastening member 40 (fig. 2).

The opening 30 is formed integrally with the base 20 above the base 20. As shown in fig. 4, an opening 31 through which the webbing 12 passes is formed in the opening 30. The opening 31 is formed in a rectangular shape slightly larger than the sectional shape of the webbing 12, for example. The webbing 12 is bent at the back of the opening 30 so as to pass through the opening 31, and is reversed.

The webbing 12, for example, contacts the edge of the opening 31 of the opening portion 30 when pulled out, and a force acts on the edge. In the present embodiment, since the point of application of a force to the opening 30 is located close to the fixed point (the portion fixed by the fastening member 40) of the base 20 on the rear plate 2a, an increase in moment generated due to the force can be suppressed.

Further, since the base 20 and the opening 30 are integrally formed, the shoulder anchor 16 can be provided near the shoulder of the passenger even in the case of the rear panel 2a having the window opening 2b (fig. 2).

The opening 31 is formed to be inclined with respect to the horizontal direction in order to mount the seat belt 12 to the buckle 18. This improves the ease of pulling out the webbing 12.

Fig. 5 is a schematic diagram illustrating an angle of the opening 31 with respect to the horizontal direction H. The angle of the opening 31 with respect to the horizontal direction H is determined as follows.

Here, a direction D3 is defined as a direction of an angular bisector of an angle D1 between a direction D from the center of the opening 31 toward the retractor 14 (specifically, toward the winding portion 14a) and a direction D2 between the center of the opening 31 toward the shoulder P1 of the passenger P seated in the rear seat 3. 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 more perpendicular the angle formed by the longitudinal direction D4 of the opening 31 and the direction D3 is, the better the ease of pulling out the webbing 12 becomes. In the present embodiment, the angle formed by the longitudinal direction D4 of the opening 31 and the horizontal direction H is smaller than in the case where the shoulder anchor 16 is positioned directly above the retractor 14, and therefore, it is not necessary to increase the size of the opening portion 30. As a result, the shoulder anchor 16 can be fixed to the rear plate 2a with limited space.

< effects of the present embodiment >

According to the above embodiment, the shoulder anchor 16 is fixed to the rear of the rear seat 3 (specifically, the rear plate 2a) of the passenger compartment 2. The retractor 14 is located on the opposite side of the buckle 18 from the imaginary line L (fig. 2) as viewed in the vehicle width direction from the imaginary line L that is vertically downward from the shoulder anchor 16.

As described above, since the shoulder anchor 16 is located at a position away from the retractor 14 in the vehicle width direction of the passenger compartment 2, the angle formed by the direction in which the seat belt 12 is folded back after passing through the shoulder anchor 16 and the horizontal direction H is reduced as compared with the case where the shoulder anchor 16 is located directly above the retractor 14. As a result, the ease of pulling out the webbing 12 can be improved without increasing the size of the shoulder anchor 16 (specifically, the opening 30).

In the above embodiment, the passenger cabin 2 has 2 rows of seats (the front seat and the rear seat 3), but the present invention is not limited to this. For example, the passenger cabin 2 may also have 1 row of seats.

In the above embodiment, the vehicle 1 is a convertible passenger/cargo vehicle, but is not limited thereto. For example, the vehicle 1 may be a flat-head truck having a cab disposed above an engine.

The scope of the present disclosure is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various changes and modifications can be made in the above embodiments. It is apparent that modifications and improvements are also included in the scope of the present disclosure, as described in the claims.

The present application is based on the japanese patent application filed on 26/1/2017 (japanese application 2017-012269), the contents of which are hereby incorporated by reference.

[ Industrial availability ]

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

[ description of reference numerals ]

1 vehicle

2 passenger cabin

2a rear plate

3 rear seat

10 seat belt device

12 safety belt

14 retractor

16 shoulder fixing part

18 belt buckle

20 base

30 opening part

31 opening

Claims

1. A seat belt apparatus for a vehicle, comprising:

a retractor that retracts one end side of the seat belt,

a buckle connectable to the other end side of the seat belt, an

A shoulder fixing member fixed to a rear plate forming a vehicle compartment, for guiding the seat belt to change its direction;

the retractor is located on the opposite side of the buckle as viewed in the vehicle width direction from a virtual line vertically downward from the shoulder anchor;

the shoulder fixing member includes:

a flat plate portion facing the rear plate with a gap therebetween,

a protruding portion that protrudes from both end portions of the flat plate portion toward the rear plate and is fixed to the rear plate, and

an opening portion provided above the flat plate portion and having an opening through which the webbing drawn out from the retractor passes while changing its direction;

the extension portion is provided along a direction connecting the upper opening portion and the retractor so as to sandwich a seat belt extending from the retractor to the opening portion.

2. The seat belt device for a vehicle according to claim 1, wherein,

the opening of the opening is formed to be inclined with respect to a horizontal direction.