JPH10305756A - Safety belt buckle actuating body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently display performance of a safety belt also at the time of a head-on collision of a vehicle by providing a fastening means separatably fastening a buckle member to the floor of a vehicle and a fastening release means which is installed in the buckle member and releases the fastening of the buckle member by the fastening means. SOLUTION: When a striker S is constrained by fastening bars 5a, 5b when a seat is spread, a buckle B is supported by a floor F even if inertia force is applied to the seat. The coupling of the fastening bars 5a, 5b and the striker S is attained because the opposed tip parts of the fastening bars 5a, 5b come into contact with each other by a spring by releasing a handle 7 when the striker S enters into the recess part 6 of the buckle B. When a head-on collision of the vehicle is generated, the buckle B does not move forward and performance of a safety belt is displayed, even if inertia force is applied to the seat and buckle B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-point safety belt buckle operating system applied to a rear seat of a foldable automobile.
sembly).

[0002]

2. Description of the Related Art Generally, a two-point safety belt to which a tongue and a buckle are fixed is used for a rear seat of an automobile. This safety belt is a bench-type seat, particularly, as shown in FIG. 5, even if the seat cushion is a foldable seat in which the seat cushion is deflected in the X direction and the seat back is deflected in the Y direction. It is fixed to a seat frame installed integrally.

[0003]

However, such a safety belt has a problem that, when the safety belt is worn, the buckle moves together with the movement of the seat. In other words, in the case of the foldable seat, at the time of a serious frontal collision of the vehicle, the seat cushion is easily unlocked by the inertial force and is easily warped forward. You will lose your binding power. This causes a fatal problem for passengers because of the loss of the inherent function of the safety belt. In view of the above, an object of the present invention is to selectively fix the buckle fixed to the foldable seat cushion as described above to the floor during traveling, so that the performance of the safety belt can be improved even during a frontal collision of the vehicle. The goal is to be fulfilled.

[0004]

According to one aspect of the present invention, there is provided a buckle member having a tongue coupling portion formed at an upper portion, and a buckle member fixedly attached to a seat frame of a seat cushion at an intermediate portion. A striker fixedly mounted on the floor of the vehicle and a fastening member installed below the buckle member and movable between a fastening position for fastening the buckle member to the striker and a fastening release position for releasing the fastening. A fastening means for detachably fastening the buckle member to a floor of a vehicle; and a fastening release means installed on the buckle member for releasing fastening of the buckle member by the fastening means.

According to another aspect of the present invention, the fastening means further includes a guide member for guiding the striker to the fastening position, and a pressing means for constantly pressing the fastening member to the fastening position.

According to still another aspect of the present invention, the fastening member includes a fastening position where lower side ends of the buckle member are in contact with each other and a release position where the opposite ends are separated from each other. And a pair of fastening rods installed so that the opposing end protrudes into the recess through the fastening member guide port.

According to still another aspect of the present invention, the striker is formed in an inverted U shape having both lower ends fixedly mounted on a floor of a vehicle and an upper end fastened to the fastening member. You.

According to still another aspect of the present invention, the fastening release means includes a cable having one end connected to one side of the upper surface of the fastening rod, and the respective fastening rods being separated from each other to a fastening release position. A handle connected to the other end of the cable and protruding from the upper surface of the buckle; and a plurality of rollers installed inside the buckle member to support the cable.

According to the present invention, when the striker is restrained by the stopper when the seat is unfolded, the buckle is connected to the floor even if an inertial force acts on the seat. When the sheet is folded and the striker is pulled to release the striker from the restraint of the stopper when folding the sheet, the sheet can be easily folded.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 exemplifies an installation state of the present invention, in which a buckle B is fixed to a side surface of a seat cushion C at an angle, and a lower end of the buckle B is connected to a striker S installed on a floor F of a vehicle. ing.

As shown in FIG. 2, the buckle B has a usual locking means whose upper part of the main body can be connected to the tongue.
A button 1 capable of releasing a tongue coupled to the locking means is provided on an outer surface. The body of the buckle B is formed to be longer than a normal buckle. The middle portion of the main body of the buckle B is fixed to the seat frame 2 of the seat cushion C or to a connecting member extended from the seat frame, and a fastening member is installed at a lower portion of the extended main body. As shown in FIG. 3, striker guide surfaces 10a, 10a are provided on both side walls 14 at the lower end of the buckle B.
b and a recessed portion 6 having fastening member guide ports 9a and 9b is formed.

The fastening member includes a pair of fastening rods 5a and 5b. The fastening rods 5a and 5b are separated from each other at a fastening position where the opposite ends contact each other below the buckle B. Between the fastening position
The opposite end portion is installed so as to protrude into the recess portion 6 through the fastening member guide ports 9a and 9b. As shown in FIG. 3, at the rear end of each of the fastening rods 5a, 5b, springs 3a, 3b for pressing the fastening rods 5a, 5b are installed at the center side of the main body of the buckle B, respectively.
A cable 4 having a handle 7 capable of pulling the fastening rods 5a, 5b in opposite directions is connected to a, 5b.

The cable 4 is joined by one roller 8e through four rollers 8a, 8b, 8c, 8d installed at four points from the respective fastening rods 5a, 5b in the lower part of the main body of the buckle B. The upper end of the cable 4 is led out to the outside above the middle of the main body of the buckle B, and a handle 7 is attached to the end.
When the handle 7 is pulled, the fastening rods 5a and 5b are separated in a direction away from each other, and when the handle 7 is released, the spring 3 is released.
Returned by a and 3b.

The striker S includes the fastening rods 5a, 5
b, which is fixed to the floor F with an angle and height that can be constrained within the b, is formed in an inverted U-shape, and is fixed to both lower ends fixed to the floor F of the vehicle and the fastening member. And an upper end portion.

At the upper end of the striker S, a stopper 11 having a tapered surface 12 and a stop surface 13 is formed. By providing the tapered surface 12, the striker S enters the recess 6 and the upper end of the striker S has a fastening rod 5 of the fastening member at a fastening position.
When the upper ends of the strikers S are moved to the release position, the opposing ends of the fastening rods 5a, 5b are moved against the elastic force of the springs 3a, 3b when the upper ends of the strikers S come into contact with each other. It can easily pass between the opposed ends of the fastening rods 5a, 5b. Also, by providing the stop surface 13, when the upper end of the striker S fastened by the fastening rods 5a, 5b comes into pressure contact with the ends of the fastening rods 5a, 5b, the elasticity of the springs 3a, 3b is increased. This prevents the fastening rods 5a, 5b from being moved to the fastening release position against the force.

The operation of the embodiment of the present invention configured as described above will be described below. First, when the sheet is unfolded as shown in FIG. 1, the striker S is connected to the fastening rod 5a,
When the seat is restrained by 5b, the buckle B is supported by the floor F even when an inertial force acts on the seat. The connection between the fastening rods 5a and 5b and the striker S is such that the seat cushion C is further pushed downward with the handle 7 being pulled, and the striker S is inserted into the recess 6 of the buckle B.
Is achieved by releasing the handle 7 so that the opposing ends of the fastening rods 5a, 5b come into contact with each other by the springs 3a, 3b. If a frontal collision of the vehicle occurs in this state, the buckle B functions not only as a safety belt but also as a locking device for fixing the seat cushion C. Therefore, even if inertial force acts on the seat and the buckle B, the buckle B does not move. The performance of the safety belt can be exhibited as it is without moving forward.

At the time of folding the sheet, if the striker S is released from the restraint of the fastening rods 5a and 5b by pulling the cable 4, the sheet can be easily folded. At this time, when the handle 7 is pulled upward, the cable 4 is pulled through the rollers 8a, 8b, 8c, 8d, 8e, so that the fastening rods 5a, 5b are separated into both. When the fastening rods 5a and 5b are separated in this manner, the restraint of the striker S is released, and the seat cushion C can be folded as shown in FIG.

While the invention has been illustrated and described with respect to certain preferred embodiments, various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as defined by the appended claims. This will be readily apparent to those of ordinary skill in the art.

[0019]

As described above, according to the present invention, at the time of a head-on collision of a vehicle, the buckle is fixed to the floor. When the buckle is fixed to the floor, the buckle is also fixed to the frame of the seat cushion, so that the buckle can also serve as a locking device for the folding seat cushion.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a rear seat of a passenger car illustrating the present invention.

FIG. 2 is an exploded perspective view of a buckle and a striker installed on a vehicle floor according to the embodiment of the present invention.

FIG. 3 is a partial longitudinal sectional view showing a lower portion of a bag according to the present invention.

FIG. 4 is a schematic side view of a rear seat of a passenger car showing an operation state of the present invention.

FIG. 5 is a schematic side view illustrating a state in which a rear seat is folded in a passenger car having a conventional folding rear seat.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Button 2 Seat frame 3a, 3b Spring 4 Cable 5a, 5b Fastening rod 6 Recess part 7 Handle 8a, 8b, 8c, 8d, 8e Roller 9a, 9b Fastening member guide opening 10a, 10b Striker guide surface 12 Taper surface 13 Stop surface 14 Side wall B Buckle C Seat cushion F Floor S Striker

Claims (9)

[Claims] A buckle member fixedly attached to a seat frame of a seat cushion at an intermediate portion; a striker fixedly attached to a floor of a vehicle; and a buckle member installed at a lower portion of the buckle member. A fastening member movable between a fastening position for fastening the buckle member to the striker and a fastening release position for canceling the fastening,
A safety belt buckle operation comprising: fastening means for detachably fastening the buckle member to a floor of a vehicle; and fastening release means installed on the buckle member for canceling fastening of the buckle member by the fastening means. body. 2. The apparatus according to claim 1, wherein said fastening means further comprises a guide member for guiding said striker to said fastening position, and a pressing means for constantly pressing said fastening member to said fastening position. Safety belt buckle operating body. 3. The guide member according to claim 2, wherein the guide member is formed at a lower end portion of the buckle member, and includes a recess having a striker guide surface and a fastening member guide port on both side walls. Safety belt buckle operating body. 4. The fastening member is movable between a fastening position at which lower laterally opposed ends of the buckle member contact each other and a fastening release position at which the opposed ends are separated from each other. 2. The safety belt buckle operating body according to claim 1, wherein said opposed end portion is constituted by a pair of fastening rods installed so as to protrude into said recess through said fastening member guide port. 5. The striker is formed in an inverted U-shape having both lower ends fixedly mounted on a floor of a vehicle and an upper end fastened to the fastening member. 2. The safety belt buckle operating body according to 1. 6. The safety belt buckle operating body according to claim 2, wherein said pressurizing means is a spring. 7. A spring for pressing each of the fastening rods to a fastening position is interposed between the other end of the fastening rod and a side surface of the buckle member below the buckle member. The safety belt buckle operating body according to claim 4, wherein 8. A cable having one end connected to one side of an upper surface of the fastening member, and the other end of the cable connected to the other end of the cable such that the fastening members can be separated from each other to a fastening release position. The safety belt buckle operating body according to claim 1, further comprising a handle protruding from an upper surface of the buckle, and a plurality of rollers installed inside the buckle member to support the cable. 9. The upper end of the striker, when the striker is fastened to a fastening member, the upper end of the striker enters the recess and faces the opposite end of a fastening rod of the fastening member at a fastening position. A taper surface that, when in pressure contact, moves the fastening rod to a fastening release position against the elastic force of the spring so that the upper end of the striker can pass between the fastening rods; A stopper having a stop surface for preventing the fastening rod from moving to the fastening release position against the elastic force of the spring when the upper end of the striker fastened by the above comes into pressure contact with the opposite end of the fastening rod. The safety belt buckle operating body according to claim 5, comprising: