JP2542334Y2 - Vehicle occupant restraint - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an occupant restraint system for a vehicle having, for example, a seat belt and an airbag device for restraining an occupant in a vehicle frontal collision.

[0002]

2. Description of the Related Art Conventionally, as a vehicle occupant restraint device of the above-mentioned example, there is a device disclosed in Japanese Utility Model Laid-Open Publication No. 63-150851.

That is, while the retractor main body is fixed to the vehicle body, a seat belt having a shoulder belt lower end rotatably mounted on the retractor main body is provided, and the seat belt is led out to the occupant via a slip joint. An occupant restraint system for a vehicle configured to restrain an occupant in the event of a vehicle collision by engaging a front end of a webbing portion of a seat belt with a buckle provided on a side surface of a tunnel portion of a floor panel.

However, in such a conventional occupant restraint system, when a collision load is applied at the time of a vehicle collision, the occupant is immediately restrained by the above-mentioned seat belt. There was a problem that was added to.

In order to solve such a problem, conventionally,
For example, an apparatus as described in Japanese Utility Model Laid-Open No. 2-127475 has already been devised. That is, when a tensile load greater than a predetermined value is applied to the retractor body (seat belt retractor) fixed to the center pillar inner panel as a vehicle body member and capable of winding up the shoulder belt, the plastic deformation occurs. An occupant restraint system for a vehicle, comprising: a U-shaped plate made of an iron plate as an impact buffering member for alleviating a tensile load by connecting the retractor body to a center pillar inner panel via a U-shaped plate.

According to this occupant restraint apparatus, when the occupant's forward tilting force acts as a tensile load on the shoulder belt portion via the webbing portion of the seat belt during a vehicle collision, the above-mentioned U-shaped plate is plastically deformed. As it is deformed to reduce the tensile load, it can effectively reduce the momentary large load applied to the occupant by the seat belt and can restrain the occupant with an appropriate restraining force. There was a problem.

That is, the above-mentioned U-shaped plate is
Since it is set in advance to plastically deform when a load equal to or more than a predetermined value acts on the U-shaped plate from a certain direction,
When the action direction of the tensile load on the shoulder belt changes due to the collision mode, there is a possibility that the stable shock buffering action of the U-shaped plate may not be obtained.

[0008] The shock-absorbing action of the U-shaped plate described above, when the airbag device is arranged in front of the seat,
Especially important. That is, in the event of a vehicle collision, a good shock buffering action is required because both the restraining force of the seat belt and the restraining force of the deployment of the air bag act on the occupant.

[0009]

According to the first aspect of the present invention, a vehicle capable of obtaining a stable shock absorbing action by the shock absorbing member by regulating the direction of deformation of the shock absorbing member. The purpose of the present invention is to provide an occupant restraint system.

[0010] The invention described in claim 2 of the invention is based on the above contract.
In addition to the purpose of the invention described in claim 1, the shoulder belt
In a vehicle air bag device in front of the seat is disposed which an occupant sits to be bound Ri, and an object thereof is to provide a passenger restraint system for a vehicle which can obtain a stable shock absorbing action.

[0011]

According to a first aspect of the present invention, there is provided a retractor body capable of winding a shoulder belt, and plastically deforms when a predetermined or more tensile load is applied to the shoulder belt. An impact cushioning member for alleviating the tensile load, and an occupant restraint system for a vehicle in which the retractor body is connected to the vehicle body member via the impact cushioning member. In the meantime, the direction of deformation of the shock-absorbing member when a tensile load is generated and the retractor
It is a vehicle occupant restraint device provided with a regulating member for regulating the direction of movement of the body .

The invention according to claim 2 of the present invention, together with the structure of the invention according to claim 1, uses a shoulder belt.
Occupant is restrained is characterized in that it is a passenger restraint system for a vehicle air bag system disposed in front of the seat to be seated Ri.

[0013]

According to the first aspect of the present invention, the above-mentioned restricting member is provided between the vehicle body member and the shock absorbing member. The direction of deformation of the member and the impact buffer
The direction of movement of the retractor main body when the material is deformed can be restricted, and as a result, there is an effect that a stable shock absorbing action by the shock absorbing member can be obtained.

According to the invention described in claim 2 of the invention,
In addition to the effect of the invention described in claim 1, in a vehicle in which the airbag device is disposed in front of the seat , there is an effect that the above-described stable shock buffering action can be obtained.

[0015]

An embodiment of the present invention will be described in detail below with reference to the drawings. The drawing shows an occupant restraint system for a vehicle. In FIG. 1, an airbag device 4 incorporated in a steering wheel 3 is provided in front of a driver's seat 2 of the vehicle 1 and a passenger seat 5 is provided in front of the driver's seat 2. In
An airbag device 7 of a front mount type incorporated inside the instrument panel 6 is provided. In FIG. 1 described above, the airbags 8, 9 of the airbag devices 4, 7 are shown in a deployed state.

The occupant restraining device for restraining the occupant sitting on the driver's seat 2 and the passenger's seat 5 is constructed as shown in FIGS. 2, 3 and 4.

That is, the center pillar inner panel 10
And a center pillar outer panel (not shown), and a center pillar having a closed cross section 11 extending in the vertical direction is provided. The center pillar inner panel 10 of the center pillar has an opening 12 for assembling the retractor.
And the retractor main body 13 is disposed so as to be located within the above-described closed section 11 from the opening 12.

The retractor body 13 has a take-up shaft 17, a ratchet plate provided with ratchet pawls, a lock pawl, and the like inside a retractor body surrounded by a housing 14 having a U-shaped cross section, a tie bar 15, and a top plate 16. The shoulder belt portion 19 of the seat belt 18 is wound around the above-described winding shaft 17 so that the member can be fed and wound up. In the drawings, the internal structure of the retractor main body 13 is omitted for convenience of illustration.

A mounting plate 20 extending upward is integrally formed on the top plate 16 of the retractor body 13 described above, and a mounting hole 21 is formed in the upper end of the mounting plate 20 as shown in FIGS. At the same time, a positioning piece 22 at the time of attachment is cut and raised at an intermediate portion, and a U-shaped plastic deformation portion 23 is bent at a lower portion.

Then, the positioning piece 22 is inserted into the positioning hole 24 of the center pillar inner panel 10, and the mounting piece 2 is
0 is fixed to the center pillar inner panel 10.

Housing 1 of retractor body 13 described above
In the back of the housing part 14a on the vehicle interior side in FIG.
Using two caulking pins 27, 27 as shown in FIG.
One end of the letter-shaped fuse 28 is fixed. The fuse 28 is an impact buffering member that plastically deforms and reduces the tensile load when a predetermined or more tensile load is applied to the shoulder belt portion 19 of the seat belt 18. In this embodiment, an iron plate having a predetermined thickness is formed in a U-shape. The above-described fuse 28 is formed by bending and forming the fuse.

As shown in FIG. 5, the above-mentioned fuse 28 has two pin holes 28b, 28b corresponding to the caulking pins 27, 27 at an upper end 28a which is caulked to the rear surface of the housing portion 14a. In the center of the U-shaped part 28c,
A groove 28d is formed along this U-shape.

A fuse box 29 for mounting the lower end of the above-described retractor body 13 to a center pillar inner panel 10 as a vehicle body member via a fuse 28 is configured as shown in FIGS.

That is, in the fuse box 29, a box portion 31 is integrally formed on the upper portion of the lower mounting piece 30, and a mounting hole 32 is formed in the upper portion of the mounting piece 30. Is formed by cutting and raising the positioning piece 33 at the time of mounting.

The above-mentioned box portion 31 integrally bends side walls 35, 36 and front walls 37, 38 from both front and rear sides of a rear wall 34, which is provided flush with the above-mentioned mounting piece 30. The two front walls 37, 38 form a space 39 between them, and integrally form lip pieces 40, 41 extending upward from the respective side walls 35, 36 in a substantially L-shape. The lip pieces 40 and 41 are shown in FIGS.
On the back of the housing portion 14a of the retractor body 13.
They are located adjacent to each other.

The U-shaped portion 28c of the U-shaped fuse 28 is positioned in the box portion 31 of the above-described fuse box 29 having the above-described configuration so as to be positioned as shown in FIGS. , 29 are fixed using caulking pins 42 and washers 43, and then the above-mentioned positioning piece 33 is inserted into the positioning hole 4 of the center pillar inner panel 10.
4 and then the above-described mounting piece 30 is fixed to the center pillar inner panel 10 using bolts 45 and nuts 46.

That is, the lower end of the retractor main body 13 is fixed to the center pillar inner panel 10 via the U-shaped fuse 28 and the fuse box 29, and the fuse 28 is It is configured to regulate the direction of deformation. So
Then, how to retract the retractor body 13 when the fuse 28 is deformed
The direction of movement of the jing portion 14a is adjusted by the lip
The pieces 40 and 41 are configured to regulate.

The illustrated embodiment is constructed as described above, and its operation will be described below. At the time of collision of the vehicle 1, the occupant's forward tilting force acts as a tensile load on the shoulder belt portion 19 via the webbing portion of the seat belt 18,
A lock claw operating member provided inside the retractor main body 13 operates the lock claw member, and engages the lock claw member with the ratchet claw of the ratchet plate.

For this reason, the winding shaft 17 is locked, the extension of the shoulder belt portion 19 from the retractor main body 13 is stopped, and the fuse 28
The upper end 28a of the fuse 28 is pulled upward and plastically deforms.

The direction of plastic deformation of the fuse 28 is determined by the box portion 3 of the fuse box 29 serving as a regulating member.
1, the plastic deformation of the fuse 28 is restricted.
In the shape, the lip pieces 40 and 41 of the box portion 31
Moving direction of the retractor body 13 is Ru is restricted. That is,
Since the undesired tilting of the U-shaped fuse 28 and the retractor main body 13 in the front-rear direction is regulated by the box portion 31, the U-shaped fuse 28 plastically deforms substantially straight upward and the retractor main body 13 The inside of the opening 12 is moved upward while compressively deforming the V-shaped plastic deformation portion 23 of the mounting piece 20. As a result, a stable shock buffering action by the U-shaped fuse 28 can be obtained, so that the collision load applied to the occupant from the seat belt 18 can always be satisfactorily reduced regardless of the collision mode. This is particularly effective when the airbag devices 4 and 7 are provided in front of the seats 2 and 5.

In correspondence between the configuration of the present invention and the above-described embodiment, the shoulder belt of the present invention corresponds to the shoulder belt portion 19 of the seat belt 18 of the embodiment,
Similarly, the shock absorbing member corresponds to a U-shaped fuse 28 made of iron plate, the vehicle body member corresponds to the center pillar inner panel 10, and the regulating member has lip pieces 40 and 41.
The present invention is not limited to the configuration of the above-described embodiment, although the fuse box 29 corresponds to the driver's seat 2 and the passenger's seat 5.

[Brief description of the drawings]

FIG. 1 is a plan view of a vehicle provided with the occupant restraint device of the present invention.

FIG. 2 is a side view showing the vehicle occupant restraint device of the present invention.

FIG. 3 is a perspective view of the occupant restraint device.

FIG. 4 is a rear view showing the occupant restraint device as viewed from the inside of a pillar closed cross section.

FIG. 5 is a perspective view of a fuse.

FIG. 6 is a rear view of the fuse box.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a plan view of a fuse box.

FIG. 9 is an enlarged sectional view of a main part of the occupant restraint device.

[Explanation of symbols]

 2 ... Driver's seat 4 ... Airbag device 5 ... Passenger seat 7 ... Airbag device 10 ... Center pillar inner panel 13 ... Retractor body 19 ... Shoulder belt portion 28 ... Fuse 29 ... Fuse box

Continued on the front page (72) Inventor Kimishi Saito 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Inside Mazda Co., Ltd. (56) References JP-A-48-16347 (JP, A) (JP, U) Japanese Utility Model Showa 48-82619 (JP, U) Japanese Utility Model Showa 51-39930 (JP, U)

Claims (2)

(57) [Scope of request for utility model registration] A retractor main body configured to wind up the shoulder belt, and an impact buffering member that plastically deforms and reduces the tensile load when a predetermined or more tensile load is applied to the shoulder belt, An occupant restraint system for a vehicle having a main body connected to a vehicle body member via the shock absorbing member, wherein a deformation direction of the shock absorbing member when a tensile load is generated between the vehicle body member and the shock absorbing member. And this opposition
An occupant restraint system for a vehicle, comprising a restricting member for restricting a movement direction of a retractor main body when a shock absorbing member is deformed . 2. An occupant restrained by the shoulder belt.
There occupant restraint system for a vehicle according to claim 1, wherein the airbag device is disposed in front of the seat to be seated.