JPH0891174A - Seat belt housing device - Google Patents

Abstract

PURPOSE: To make seat belt usable only by rotating an arm rest by juxtaposing a seat buckle holder and a cam bracket in notch parts formed on both left and right side surfaces of the base end of the arm rest so as to be relatively rotatable according to rotation of the arm rest. CONSTITUTION: An arm rest 3 is moved to a housing position, and a buckle 4A is held between a back rest 2 and the arm rest 3. When a seat belt 4 of a central seat is used, the arm rest 3 is rotated up to a use position from the housing position positioned in the back rest 2. Here, in a process where the buckle 4A changes to a condition of coming into contact with a forward projecting cam 8B from a condition of coming into contact with a base circle 8A of a cam bracket 8, the buckle 4A is forward pushed out. Therefore, the buckle 4A slips off from a claw 7A naturally or by overcoming elastic force of a projecting part 7E, and drops on a seat cushion 1, and calls upon a rear seat occupant to wear the seat belt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seatbelt retractor for a rear seat for three persons, and more particularly, to retract a seatbelt buckle by using an armrest provided at the center of the backrest of the rear seat. The present invention relates to a seat belt storage device configured to be possible.

[0002]

2. Description of the Related Art Conventionally, a rear seat S for three persons has a seat cushion 1 and a backrest 2 as shown in FIG.
And an armrest 3 that is stored in a substantially central portion of the backrest 2 and is rotatably arranged around a lower shaft.

The rear seat S is equipped with seat belts 4 for three persons, but the seat belt 4 in a state where the rear seat S is not riding may be placed on the seat cushion 1 randomly. Many look bad.

Therefore, it is desirable that the buckle 4A of the seat belt 4 on the center side of the rear seat is stored in the rear seat S in an unobtrusive state. Actual Kaihei 3-
Japanese Unexamined Patent Publication No. 100558 discloses a seatbelt storage portion that has a cutout portion formed on the left and right side surfaces of the base end of the armrest 3 to store the buckle 4A.

[0005]

However, although the seat belt storage section stores the buckle 4A of the seat belt 4 on the center side in the rear seat S so as not to get in the way, the buckle 4A is present when the armrest is stored. There is a problem that the buckle 4A is difficult to remove from the storage portion when the seat belt 4 is used. Then, it is conceivable that the passenger avoids this troublesome work and does not wear the seat belt 4. Further, rattling may occur when the buckle 4A is stored, and an abnormal noise may be generated.

Further, the rear seat S raises a seat cushion that is generally used in a wagon vehicle and folds the backrest down to the seat cushion mounting portion, and the back surface of the backrest is placed on the luggage mounting portion. In the case of a folding seat that can be used as, there is a problem that the stored buckle 4A is left on the vehicle body floor due to the folding of the seat.

Therefore, according to the present invention, when the seat belt 4 is not used, the buckle 4A of the seat belt 4 is stored in the rear seat S by using the armrest 3 so as not to get in the way, and the seat belt 4 is used. In this case, the first object is to provide a seat belt storage device in which the seat belt 4 can be used only by rotating the armrest 3.

A second object of the present invention is to provide a seat belt storage device which prevents rattling when the buckle 4A is stored.

[0009]

In order to achieve the above-mentioned first object, according to the present invention, the seat cushion, the backrest, and the backrest are housed in substantially the central portions thereof and are pulled out onto the seat cushion by rotating about a lower shaft. In a storage device for a seat belt of a rear seat, which comprises an armrest that is capable of being provided, a seat buckle holder having a claw that can be fitted into a buckle of the seat belt, and the armrest with respect to a base circle concentric with the lower shaft. A cam bracket having a cam protruding toward the front side of the vehicle for a length substantially equal to the distance from the lower shaft to the tip of the claw in the pulled-out state is provided at the base end of the armrest so as to be relatively rotatable with the rotation of the armrest. They were installed side by side in the notches formed on the left and right sides.

In order to achieve the above second object, according to the present invention, a projecting portion that projects outward and is elastically deformable is integrally formed at the tip of the claw.

[0011]

With the above construction, when the seat belt buckle is stored, the buckle is inserted into the claw of the seat buckle holder with the armrest pulled out. Then, the buckle is held between the backrest and the armrest by moving the armrest to the storage position.

On the other hand, when using the seat belt, the armrest is rotated from the retracted position to the used position. Here, the buckle is pushed forward in the process of changing from the state in which the buckle is in contact with the base circle of the cam bracket to the state in which it is in contact with the cam protruding forward. As a result, the buckle comes off the nail and falls on the seat cushion, prompting the rear seat occupant to wear the seat belt.

Further, the buckle can be smoothly put in and taken out by making the nail tapered. Further, by providing a projecting portion that projects outward and is elastically deformable at the tip of the claw, it is possible to eliminate rattling when the buckle is fitted due to the springback action of the projecting portion.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will now be described in detail with reference to FIGS. 1 to 7. The same parts as those of the conventional structure shown in FIG. 8 are designated by the same reference numerals.

As shown in FIG. 1, a rear seat S for three persons has a seat cushion 1 corresponding to a seat surface, a backrest 2 corresponding to a backrest, and a backrest 2 which is housed substantially in the center of the backrest 2 and rotates around a lower shaft. The rear seat S is provided with seat belts 4 for three persons.

As shown in detail in FIG. 2, the armrest 3 is made of a sheet metal armrest bracket 5 fixed to notches formed on the left and right side surfaces of the base end, and is made of an L-shaped sheet metal. One end of the backrest bracket 6 is rotatably fixed by a stepped pin 9. The other end of the L-shaped backrest bracket 6 is fixed to the substrate 2A of the backrest 2 by a bolt (not shown), and the armrest 3 is centered on the stepped pin 9 at one end of the backrest bracket 6 It can be pulled out from the seat cushion 1 from 2.

A seat buckle holder 7 made of resin is provided outside the armrest bracket 5 and the backrest bracket 6. This seat buckle holder 7 has a tapered claw 7A that can be fitted into the buckle 4A of the seat belt 4 in the center part, and a guide part 7B that inclines along the step from the cutout part of the armrest 3 to the outer peripheral part at the front end. In order to avoid interference between the overhanging portion 7C having a length corresponding to the step between the cutout portion and the outer peripheral portion of the armrest 3 on the outer side of the bottom portion and connected to the guide portion 7B, and the stepped pin 9 at the rear end. And a notch portion 7D formed on the armrest bracket 5 and fixed to the armrest 3 together with the armrest bracket 5. Furthermore, in order to achieve the second purpose, the nail 7A
A projecting portion 7E that projects outward and is elastically deformable is formed at the tip of the so as to prevent rattling when the buckle 4A is attached.

Outside the cutout portion 7D of the seat buckle holder 7, a cam bracket 8 having a cam 8B projecting from a base circle 8A concentric with the stepped pin 9 is in a state where the armrest is pulled out. The center of the base circle 8A is fixed to the stepped pin 9 so as to face forward. It should be noted that the tip of the cam 8B is set to have a size protruding by substantially the same length from the tip of the claw 7A and the center of the stepped pin 9.

The large diameter portion of the stepped pin 9 is fitted into the center of the base circle 8A of the cam bracket 8 and the cam bracket 8 is inserted.
The seat back holder 7 and the notch 7
Penetrate inside D. Further, the small-diameter portion of the stepped pin 9 located at the tip of the large-diameter portion fixes one end of the backrest bracket 6 in the above-mentioned positional relationship, and the armrest bracket 5 relative to the backrest bracket 6. Support rotatably. Since the stepped pin 9 forms the lower shaft of the armrest, the armrest bracket 5 is rotatable with respect to the backrest bracket 6 and the cam bracket 8 is not rotatable with respect to the backrest bracket 6. Good.

According to the seat belt retractor thus constructed, when the seat belt 4 is retracted, the buckle 4A of the seat buckle holder 7 is pulled out with the armrest 3 pulled out to the middle of the retracted position and the use position. Nail 7A
Or, in the seat buckle holder 7 having the protrusion 7E formed thereon, the seat buckle holder 7 rides over the protrusion 7E and is inserted into the claw 7A. Then, by moving the armrest 3 to the storage position, the buckle 4A is held between the backrest 2 and the armrest 3.

On the other hand, when using the seat belt 4 at the center seat, the armrest 3 is rotated from the retracted position in the backrest 2 to the use position. Here, as shown in FIG. 3, the buckle 4A is pushed forward in the process of changing from the state in which the buckle 4A is in contact with the base circle 8A of the cam bracket 8 to the state in which it is in contact with the cam 8B protruding forward. Therefore, the buckle 4A naturally or overcoming the elastic force of the protruding portion 7E is disengaged from the claw 7A, falls on the seat cushion 1, and encourages the rear seat occupant to wear the seat belt.

Instead of providing the protrusion 7E on the claw 7A of the seat buckle holder 7, an elastic material coating may be applied.

FIG. 6 shows a second embodiment of the present invention, in which a backrest bracket 11A fixed to a backrest and a cam bracket 11B are integrated into a bracket 11, and the bracket 11 is attached to an armrest bracket 5 by a pin 12. Since they are rotatably coupled, the number of parts can be reduced as compared with the structure of the first embodiment.

FIG. 7 shows a third embodiment of the present invention,
Armrest bracket 13 fixed to the armrest
Bracket 1 in which A and cam bracket 13B are integrated
3 and a bracket 14 in which a backrest bracket 14A fixed to the backrest and a seat buckle holder 14B are integrated so as to be rotatable relative to each other by a pin 12, and the number of parts is further reduced. Can be achieved.

[0025]

In the seatbelt retractor for the rear seat, the seat cushion, the backrest, and the armrest that is retractable about the lower shaft and is retracted about the lower axis of the seatrest. A seat buckle holder having a claw that can be fitted into the buckle of the seat belt, and a length approximately equal to the distance from the lower shaft to the claw tip in the armrest withdrawn state with respect to a base circle concentric with the lower shaft. A cam bracket having a cam protruding toward the vehicle front side is provided side by side with notches formed on both left and right side surfaces of the base end of the armrest so as to be relatively rotatable with the rotation of the armrest. If you do not use the belt, use the armrest to secure the buckle of the seat belt inside the rear seat. Stores so as not to,
When using the seat belt, the buckle falls on the seat cushion just by rotating the armrest, and the seat belt is ready for use, prompting the occupant to wear the seat belt. Also, in the case of a folded seat, the buckle is prevented from falling off the vehicle floor when the seat is folded.

Further, the buckle can be smoothly put in and taken out by making the claw tapered. Furthermore, by providing an elastically deformable protrusion that protrudes outward at the tip of the claw,
The springback action prevents rattling when the buckle is stored.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a rear seat to which a seat belt storage device according to a first embodiment of the present invention is applied.

FIG. 2 is an enlarged exploded perspective view of a portion A of FIG.

FIG. 3 is a side view showing a relationship between a seat belt storage structure and a seat belt buckle.

4 is a sectional view taken along line BB of FIG.

5 is a cross-sectional view taken along the line CC of FIG.

FIG. 6 is a view corresponding to FIG. 4 according to a second embodiment of the present invention.

FIG. 7 is a view corresponding to FIG. 4 according to a third embodiment of the present invention.

FIG. 8 is a schematic perspective view of a rear seat showing a conventional seat belt storage state.

[Explanation of symbols]

 1 Seat cushion 2 Backrest 3 Armrest 4 Seatbelt 4A Buckle 5 Armrest bracket 6 Backrest bracket 7 Seat buckle holder 7A Claw 8 Cam bracket 8A Base circle 8B Cam

Claims (3)

[Claims] 1. A storage device for a seat belt of a rear seat, which comprises a seat cushion, a backrest, and an armrest which is stored substantially in the center of the backrest and is capable of being pulled out on the seat cushion by rotating about a lower axis. A seat buckle holder having a claw that can be fitted into the buckle of the seat belt, and a length approximately equal to the distance from the lower shaft to the claw tip in the armrest withdrawn state with respect to a base circle concentric with the lower shaft. A cam bracket having a cam protruding toward the vehicle front side is provided in parallel with a notch formed in both left and right side surfaces of the base end of the armrest so as to be relatively rotatable with the rotation of the armrest. Seat belt storage device. 2. The seat belt storage device according to claim 1, wherein the claw has a tapered shape. 3. The seat belt storage device according to claim 1, wherein a projection portion that projects outward and is elastically deformable is integrally formed at the tip of the claw.