JPH04266552A - Seat belt device for rear seat - Google Patents

Abstract

PURPOSE:To improve appearance during non-use and to eliminate complicated operation during use by winding a webbing around a bobbin in a retractor during the non-use of a seat belt device and housing a buckle support member mounting buckle in the buckle housing casing of a seat back by means of the traction force of a wire. CONSTITUTION:A wire operating mechanism 18 to deliver a wire 31 in linkage with rotation in the pull-out direction of a webbing 3 of a bobbin 15 and draw the wire 31 in linkage with rotation in the winding direction is provided in a retractor 13 of a seat back 1. Meanwhile, a buckle support member 39 to which force for constantly protruding outwardly is energized through the force of a spring means 37 is retractably disposed in a buckle housing case 11 located at the seat back 1, and the wire 31 operated by means of the wire operating mechanism 18 is connected to the buckle support member 39. By pulling out a webbing wound around the bobbin to a front, the buckle support member and a buckle can be protruded in the direction of a car room from the buckle housing case.

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 worn by a passenger seated in a rear seat of a vehicle.

0002

2. Description of the Related Art Generally, in order to improve safety when a vehicle is running, occupants seated in a vehicle are required to wear a seat belt.

Among such seat belts, a mounting structure shown in FIG. 4, for example, is known as a seat belt device for rear seats. That is, webbings 3, 3 derived from a retractor (not shown) disposed behind the seatback 1 constituting the rear seat 10 are disposed on both left and right sides of the front surface of the seatback 1. is tongue 5a,
A tongue support member 5, 5 having a diameter 5a is inserted therethrough. Further, belt anchors 7, 7, one end of which is fixed to the floor panel, are taken out from between the seat back 1 and the seat cushion 6, which are located near the center of the vehicle interior. Buckles 9, 9 are attached to which the tongues 5a, 5a inserted through the webbings 3, 3 are fitted and fixed.

According to this rear seat seat belt device,
When the occupant seated in the rear seat 10 pulls the tongue support member 5 forward, the webbing 3 is pulled out from a retractor (not shown), so the occupant wears the webbing 3 from the shoulders to the waist, and fits the tongue 5a into the buckle 9. By fitting and fixing the seat belt, the seat belt is worn from the shoulders to the waist of the occupant.

On the other hand, Nissan Motor Co., Ltd.
Page D-65 of the manual for the new model P10 series cars published in September describes a structure in which, in addition to the above configuration, buckle storage cases 11 are provided at appropriate positions on the lower side near the front center of the seat back 1. is disclosed. By providing such buckle storage cases 11, 11, the buckles 9, 9 can be stored in the buckle storage cases 11, 11 when the rear seats are not in use, thereby improving the appearance of the vehicle interior. This effect is obtained.

[0006]

[Problem to be Solved by the Invention] However, in such a conventional rear seat seat belt device, the belt anchors 7, 7 and the buckles 9, 9 tend to be scattered on the seat cushion 6. Therefore, the appearance deteriorates, and the buckles 9, 9 on the seat cushion 6 may feel like a foreign body to the occupant sitting in the rear seat 10, and the ease of getting in and out of the rear seat 10 is not necessarily good. There was a problem.

On the other hand, as described in the new model manual for the P10 series cars, the buckle storage cases 11, 11 are provided in the front of the seat back 1, so that the buckles 9, 9 can be easily removed when not in use. The buckles 9, 9 are stored in the storage cases 11, 11 to improve the appearance of the interior of the vehicle, but even with this configuration, the buckles 9, 9 are stored in the buckle storage case 1.
There is a problem in that storing and taking out of the storage devices 1 and 11 requires a lot of manual effort, making the operations cumbersome.

Therefore, the present invention solves the problems of the conventional seat belt device for rear seats, improves the appearance of the seat belt device when not in use, and eliminates the hassle when the seat belt is in use. The object of the present invention is to provide a seat belt device for a rear seat that does not require manual operation.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the present invention leads out the webbing through which the tongue support member is inserted from a retractor arranged at the rear of the seat back to the front of the seat back, and A buckle support member with one end fixed to the floor panel is provided in a portion of the seat back located near the center of the vehicle interior, so that the tongue of the tongue support member is fitted and fixed to the buckle of the buckle support member when an occupant is seated. In the rear seat seat belt device, the wire is fed out in conjunction with the rotation of the bobbin around which the webbing is wound in the webbing pull-out direction, and the wire is unwound in conjunction with the rotation of the bobbin in the webbing winding direction. A wire actuation mechanism for traction is provided, and a buckle storage case is provided in a portion located near the center of the seat back, and a force that projects outward of the buckle storage case is constantly applied to the buckle storage case by a spring means. The seatbelt device for a rear seat has a structure in which a buckle support member is provided so as to be retractable and a wire operated by the wire actuation mechanism is connected to the buckle support member.

0010

[Operation] According to this configuration, when the seat belt device for the rear seat is not in use, the webbing is wound around the bobbin in the retractor, and the buckle is pulled by the pulling force of the wire based on the wire actuation mechanism provided in the retractor. The support member and the buckle remain stored in a buckle storage case provided on the seat back.

When the rear seat belt device is used, an occupant seated in the rear seat operates the tongue support member to pull the webbing forward, so that the webbing is pulled out from the retractor and at the same time, the webbing is pulled out. The wire is paid out based on the wire actuation mechanism that is linked to the rotation in the direction, and the buckle support member and the buckle protrude toward the vehicle interior from the buckle storage case due to the biasing force of the spring means attached to the buckle support bracket. Therefore, when the occupant fits and fixes the tongue of the tongue support member inserted through the webbing into the buckle, the occupant in the rear seat wears the seat belt.

When the passenger exits the vehicle, the webbing is wound around the bobbin in the retractor by disengaging the buckle and the tongue, and at the same time the wire actuation mechanism, which is linked to the rotation of the bobbin in the winding direction, is activated. Based on this, the wire is pulled, and the buckle support member and buckle are stored in the buckle storage case of the seat back against the biasing force of the spring means.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rear seat belt device according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the main parts of the present invention, and FIG. 2 is a side view showing the overall configuration.
is arranged, and the webbing 3 wound around the bobbin 15 of the retractor 13 is pulled out in the front FR direction. The bobbin 15 is provided with a spring means (not shown), and this spring means always applies a force to the webbing 3 in the direction of winding it into the retractor 13.

[0015] The above retractor 13 is AL
R (Automatic Locking Ret)
In other words, it is preferable to use a winding device that automatically locks the belt at the minimum required length when the belt is pulled out, prevents it from extending any further, and absorbs unnecessary slack in the belt. ELR (Emerg
locking retractor)
In other words, it is also possible to use a winding device that automatically locks the belt only in an emergency and allows the belt to be freely pulled out during normal times.

In the middle of this webbing 3, there is a tongue 5.
A slide type tongue support member 5 having a shape is slidably inserted through the one end portion 3 of the webbing 3.
A hanging tool 4 attached to a is suspended from the upper part of a side wall in the vehicle interior, in the case of the illustrated example, the side wall of the rear pillar 17 on the vehicle interior side.

The retractor 13 includes a wire operating mechanism 18 that feeds out a wire, which will be described later, in conjunction with the rotation of the bobbin 15 in the webbing pull-out direction, and pulls the wire in conjunction with the rotation of the bobbin 15 in the webbing winding direction. It is arranged. In this embodiment, a gear mechanism is used as the wire actuation mechanism 18. To explain this specifically, the bobbin 15 is integrally provided with a small-diameter first gear 19 that rotates in synchronization with the bobbin 15. Reference numeral 21 denotes a large-diameter second gear disposed at a position meshing with the small-diameter gear 19, and this second gear 21 is rotatably supported by a support shaft 23.

25 is a fixed bracket supported on the support base 27 of the retractor 13; 29 is a movable bracket that can slide along the support base 27; 31 is a wire; the movable bracket 29 has one end of the wire 31; 31a is fixed. This wire 31 passes through the fixed bracket 25 and extends toward the front FR side, and as will be described in detail later, the other end 31b of the wire 31 is connected to a buckle support member 39 provided on the seatback 1. ing.

Reference numeral 33 denotes a pawl body protruding from the side of the second gear 21, and when the webbing 3 is caught in the retractor 13, the pawl body 33 moves the movable bracket 29 toward the rear RR. It is set to be in a position where it can be pushed in the direction.

On the other hand, as shown in FIG. 2, a buckle storage case 11 is provided in the lower part of the seat back 1 located near the center, and the buckle support member 39 can freely move in and out of the buckle storage case 11. It is arranged. Floor panel 35 located below the buckle storage case 11
A buckle support bracket 37 is fixed to the. As shown in the enlarged perspective view of the main part of FIG. 3, the base 39a of the buckle support member 39 is rotatably supported by the side wall 37a of the buckle support bracket 37 in the front and rear direction.

A buckle 9 is attached to the upper end of the buckle support member 39, into which the tongue 5a of the tongue support member 5 inserted through the webbing 3 is fitted and fixed. A release button 9a is provided. The other end 31b of the wire 31 extending from the retractor 13 side passes through the left-right side wall 37b of the buckle support bracket 37 and is connected to the buckle support member 39.

Reference numeral 41 denotes a needle-like spring as a spring means which is biased with a force that causes the buckle support member 39 to constantly protrude outward from the buckle storage case 11. and the base 39a of the buckle support member 39. The needle-shaped spring 41 constantly applies a force to the buckle support member 39 so that it falls in the front FR direction.

The operation of such a rear seat seat belt device will be explained below.

That is, when the seat belt device for the rear seat is not in use, the webbing 3 is wound up inside the retractor 13 by the urging force of the spring means attached to the bobbin 15 of the retractor 13, and the webbing 3 A claw body 33 protruding from the side of the second gear 21 meshing with the first gear 19 keeps the movable bracket 29 pushed in the rear RR direction. Therefore, due to the traction force of the wire 31 in the rear RR direction, the buckle support member 39 falls in the rear RR direction as shown by the broken line in the figure.
Therefore, the buckle support member 39 and the buckle 9 remain stored in the buckle storage case 11 provided on the seat back 1.

Next, when the rear seat seat belt device is used, the occupant seated in the rear seat 10 operates the tongue support member 5 to pull the webbing 3 forward, so that the webbing 3 is attached to the bobbin 15. The webbing is pulled out from the retractor 13 against the biasing force in the winding direction. At this time, the bobbin 15 rotates counterclockwise as shown by arrow A in FIG. Rotate clockwise as shown. As the second gear 21 rotates, the claw body 33 protruding from the second gear 21
moves away from the movable bracket 29 and toward the front FR as shown by arrow C.

As a result, the pulling force of the wire 31 by the claw body 33 is released, and the wire 31 can move freely in the front FR direction as shown by arrow D, so that the spring attached to the buckle support bracket 37 Due to the urging force of the needle spring 41 as a means, the buckle support member 39 rotates toward the front FR side as shown by arrow E, and the buckle support member 39 and buckle 9 are moved from the buckle storage case 11 toward the front FR direction. , that is, it protrudes toward the passenger compartment.

Accordingly, by fitting and fixing the tongue 5a of the tongue support member 5 inserted through the webbing 3 into the buckle 9, the occupant wears a seat belt from his shoulders to his waist.

Furthermore, when the passenger exits the vehicle, the buckle 9 and the tongue 5a are disengaged by pressing the release button 9a of the buckle 9, so the webbing 3 is attached to the bobbin 15 in the retractor 13. A large-diameter second gear 21 is wound into the retractor 13 by a spring means, and is simultaneously engaged with the first gear 19 integral with the bobbin 15 as the bobbin 15 rotates clockwise.
rotates in the counterclockwise direction opposite to arrow B, and the claw body 33 protruding from the second gear 21 moves into the movable bracket 29.
and pushes the movable bracket 29 in the rear RR direction. The pushing force of this claw body 33 is transmitted from the movable bracket 29 to the buckle support member 39 via the wire 31,
The buckle support member 39 and the buckle 9 rotate in the rear RR direction against the biasing force of the needle spring 41, and the buckle support member 39 and the buckle 9 are inserted into the buckle storage case 11 of the seat back 1. Stored.

Therefore, according to this embodiment, the buckle support member 39 and the buckle 9 are attached to the seat back 1 by simply operating the tongue support member 5 to pull the webbing 3 forward. Buckle storage case 11
Since the tongue 5a protrudes toward the passenger compartment, the passenger can fasten the seat belt by fitting and fixing the tongue 5a to the buckle 9, and when getting out of the vehicle, the buckle 9 and the tongue 5
The webbing 3 is reeled into the retractor 13 by simply performing an operation to release the mating state from the seat a, and at the same time, the buckle support member 39 and the buckle 9 are automatically stored in the buckle storage case 11 of the seat back 1. This operation mode is obtained.

[0030]

[Effects of the Invention] As explained in detail above, according to the rear seat seat belt device according to the present invention, an occupant seated in the rear seat can pull out the webbing wound around the bobbin in the retractor forward. Since the buckle support member and the buckle can be made to protrude toward the passenger compartment from the buckle storage case provided in the part located near the center of the seatback, the occupant can insert the tongue of the tongue support member into the buckle of the buckle support member. By fitting and fixing, the seat belt can be easily worn. Furthermore, when getting off the vehicle, simply uncoupling the buckle and tongue will cause the webbing to be caught inside the retractor.
Moreover, the buckle support member and the buckle can be automatically stored in the buckle storage case of the seat back.

Therefore, even when the seat belt device is not in use, the buckles are prevented from being scattered on the seat cushion, which not only improves the appearance but also improves the ease of getting in and out of the seat for passengers seated in the rear seats. is obtained.

Furthermore, the removal of the buckle support member from the buckle storage case and the storage of the buckle support member into the buckle storage case are carried out automatically, so there is no need for manual operation, so the seat belt can be easily removed. It is possible to provide a seat belt device for a rear seat that does not require complicated operations during use.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing essential parts of an embodiment of a rear seat seat belt device according to the present invention.

[Figure 2] Side view showing the overall configuration of Figure 1

[Figure 3] Figure 1
FIG.

FIG. 4 is a perspective view showing an example of a conventional seat belt device for a rear seat.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Seat back, 3... Webbing, 5... Tongue support member, 5a... Tongue, 9... Buckle, 10... Rear seat, 11...
Buckle storage case, 13... Retractor, 15... Bobbin, 18... Wire operating mechanism, 19... First gear, 21... Second gear, 25... Fixed bracket, 29... Movable bracket, 31... Drive wire, 33... Nail body, 35... floor panel, 37... buckle support bracket, 39... buckle support member, 41... needle spring (spring means).

Claims (1)

[Claims] Claim 1: A webbing with a tongue support member inserted therein is led out to the front of the seat back from a retractor placed at the rear of the seat back, and one end of the webbing is attached to the floor at a portion of the seat back located near the center of the passenger compartment. In a seat belt device for a rear seat in which a buckle support member fixed to a panel is provided and the tongue of the tongue support member is fitted and fixed to the buckle of the buckle support member when an occupant is seated, a webbing is provided in the retractor. A wire operating mechanism is provided, which unwinds the wire in conjunction with the rotation of the bobbin wound in the webbing pull-out direction, and pulls the wire in conjunction with the rotation of the bobbin in the webbing winding direction. A buckle storage case is provided in the area where the buckle storage case is to be installed, and a buckle support member is removably disposed on the buckle storage case and is biased with a force that constantly projects outward from the buckle storage case by a spring means. A seat belt device for a rear seat, characterized in that a wire actuated by the wire actuation mechanism is connected to the wire actuation mechanism.