JPS6326284Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an emergency evacuation device for a passive seat belt, which is used in conjunction with a passive seat belt installed in a vehicle, and is used to release an occupant from being restrained by the seat belt in an emergency.

In conventional manual seat belts, the emergency evacuation device is a tongue and buckle provided at the joint with the lap belt and shoulder belt.

In other words, when the occupant's tongue and buckle are used to fasten and unfasten the belt, the seat belt simultaneously serves as an emergency evacuation function. Conventionally, the provision of buckles and tongues at the connecting portions of such belts caused some degree of discomfort to the occupant's body when the belt was worn, but this was unavoidable since the belt was mainly worn.

However, in recent passive belts that automatically attach and detach the seat belt to the occupant, the conventional tongue and buckle serve only as an emergency evacuation function, and there is no need to provide them at the joint with the conventional lap belt or shoulder belt. .

The present invention has been devised for the above reasons, and provides an emergency evacuation device for a seatbelt that can detach the retractor from the vehicle body in an emergency in a passive seat belt.

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a tunnel section (vehicle body) of a vehicle floor, to the side of which a base end of a case 3 of a buckle 2 is fixed with a bolt B.
The buckle 2 consists of the case 3 and fan-shaped support holes 3 formed in the side plates 3a, 3a' of this case 3.
A latch consisting of a swingable latch plate 4 whose both ends are supported by b, 3b' and leaf springs 5, 5 which resiliently repel the latch plate 4 in a direction to engage with an engagement hole 9 of a tongue plate, which will be described later. It is composed of a mechanism 6. Reference numeral 7 denotes a retractor, which is not shown in the drawings as is well known, but is operated by a mainspring spring to always retract the seat belt 8 in the direction of arrow a, and also senses the deceleration and acceleration of the vehicle in the event of an emergency such as a vehicle collision. It has a built-in emergency lock mechanism that locks the belt drawer. A tongue plate 10 having an engagement hole 9 for engaging with the latch plate 4 of the buckle 2 is connected to the housing 7a of the retractor 7. Such a buckle 2
The positional relationship between the tongue plate 10 and the tongue plate 10 may be reversed.
That is, the tongue plate 10 may be fixed to the vehicle body side and the retractor 7 may be attached to the buckle 2 side.

The following structure has been added to the conventional tongue and buckle structure.

That is, a pair of support arms 11a and 11b are provided at the upper part of the housing 7a of the retractor 7, and a fixed operation knob 12 is attached between the ends of the support arms 11a and 11b. Two guide shafts 13a, 13 which are parallel to each other and are spaced apart by a certain distance, protrude from each other.
Release levers 14a, 1, which are release means, are attached to both ends of the guide shafts 13a, 13b.
Guide grooves 15a and 15b of 4b are slidably engaged, and a movable operating knob located below the fixed operating knob 12 and spaced a predetermined distance from the fixed operating knob 12 is located between the upper ends of the release levers 14a and 14b. 1
6 is attached between the fixed operation knob 12 and the movable operation knob 16, and the movable operation knob 16 is normally moved at a predetermined distance from the fixed operation knob 12, that is, the operator moves these knobs 12 with one hand. A return spring 17 is inserted to hold the handle at a distance that allows it to be gripped. The lower ends of the release levers 14a and 14b engage with the latch plate 4 when the movable operating knob 16 is moved upward when necessary, that is, when it approaches the fixed operating knob 12.
The tongue plate 10 in the engaged state by swinging the
Release protrusion 18a, 1 for releasing the engagement with
8b is provided. Note that 19a and 19b are snap rings for preventing the guide shafts 13a and 13b from coming off.

Since the device of the present invention has the above-mentioned configuration, when an occupant is restrained by the seat belt 8 in an emergency such as a vehicle collision and wants to escape from the passenger compartment due to a fire, etc., the fixed operation knob 12 can be pressed with the thumb. Then, when the remaining finger is applied to the movable operating knob 16 and the movable operating knob 16 is moved upward against the spring 17 to approach the fixed operating knob 12, the release levers 14a and 14b move upward. The release protrusions 18a and 18b integrated therewith also move upward and engage with the latch plate 4, and as a result, the latch plate 4 swings in the direction of arrow b and engages with the engagement hole 9 of the tongue plate 10. is released.
Therefore, in this state, if the movable operating knob 16 and fixed operating knob 12 are further lifted upward as a unit,
The tongue plate 10 is separated from the buckle 2, and the retractor 7 integrated therewith can be removed from the vehicle body. In this way, the occupant is released from the restraint of the seat belt 8 and can escape from the vehicle.

4 to 6 show a second embodiment of the present invention, which differs from the first embodiment in that the release levers 14a, 14b are provided with release protrusions 18a, 18b instead of the release levers 14a, 14b. Bearing long holes 20a, 20 extending horizontally at the lower end of 14b
The rotation shafts 22a and 22b of the release roller 21 are slidably supported in the elongated holes 20a and 20b, and the roller 21 is attached to the tip of the bracket 23 which is fastened to the tunnel portion 1 together with the bolt B. An operating cam piece 24 is fixedly provided to restrict the release operation, and the movable operating knob 16 is moved upward to approach the fixed operating knob 12 in the same manner as in the first embodiment, and the release levers 14a, 14b are moved. When the roller 21 moves upward, it engages the cam piece 24 and moves horizontally, and the buckle 2 (the latch mechanism is the same as in the first embodiment, but the latch plate 4 is released via the push button 25). The engagement between the buckle 2 and the tongue plate 10 is released by pressing a push button 25 (of a so-called push button type). In this case, the push button 25 is usually covered with a cover so that it cannot be easily operated by the occupant, or is provided in a position where it is difficult to operate, for example, in a gap between the seat and the floor tunnel.

7 to 9 show a third embodiment of the present invention, which differs from the first embodiment in that release levers 14a and 14b, which are release means, have release protrusions 18a,
Instead of providing the release lever 18b, the release lever 14
Inclination actuating parts 26a and 26b are formed at the lower ends of the buckles 2a and 14b, and a fulcrum piece 27 is formed on the base plate 2a of the buckle 2 (which is a push button type similar to the second embodiment).
a, 27b are formed, and these fulcrum pieces 27a, 27
b, the substantially center of a seesaw arm 29 is rotatably supported by a pivot shaft 28, and both ends of a horizontal engagement piece 30 formed at the upper end of this seesaw arm 29 are connected to the tilt operating portions of the release levers 14a, 14b. 2
6a and 26b are slidably engaged, and the horizontal protrusion 31 at the lower end of the seesaw arm 29 faces the push button 25 of the buckle 2,
In the same manner as in the first embodiment, the movable operating knob 16 is moved upward to bring the movable operating knob 16 closer to the fixed operating knob 12, and the release levers 14a, 1
4b moves upward, the tilting actuating parts 26a, 26b
pushes one end of the seesaw arm 29, and the seesaw arm 29 rotates to release the horizontal protrusion 31 at the other end.
The push button 25 of the buckle 2 is pressed to release the engagement between the buckle 2 and the tongue plate 10. In this case as well, the push button 25 is provided with a cover so that the occupant cannot normally operate it easily, or in a position where it cannot be operated, for example, in the gap between the seat and the floor tunnel.

As described above, according to the present invention, the retractor provided at one end of the seatbelt is provided with an emergency evacuation device for the seatbelt, so there is no device on the belt worn by the occupant, and there is no discomfort to the occupant. ,
Furthermore, the layout of the passive seat belt is not restricted. Furthermore, by grasping the movable operating knob together with the fixed operating knob with one hand and lifting the two while approaching each other, the engagement between the buckle and the tongue plate is released, and the retractor subsequently separates from the vehicle body, releasing the seatbelt restraint. However, since this work can be done continuously and quickly with a single upward hand operation, it is especially convenient when an emergency is required, and since the operating part is located above the retractor, it is highly operable. Moreover, it has an extremely simple structure and can be provided at low cost.Furthermore, since the movable operating knob is located below the fixed operating knob, there are advantages such as safety and no erroneous operation.

[Brief explanation of drawings]

Fig. 1 is a partially longitudinal side view of the first embodiment of the invention, Fig. 2 is a front view thereof, Fig. 3 is an exploded perspective view thereof, and Fig. 4 is a side view of the second embodiment of the invention. , FIG. 5 is a front view thereof, FIG. 6 is an exploded perspective view thereof, FIG. 7 is a side view of the third embodiment of the present invention, FIG. 8 is a front view thereof, and FIG. 9 is an exploded perspective view thereof. It is a diagram. 1...Tunnel part (vehicle body), 2...Bassuru,
3... Case, 4... Latch plate, 6... Latch mechanism, 7... Retractor, 8... Seat belt, 10... Tongue plate, 12... Fixed operation knob, 14a, 14b... Release lever, 1
6...Movable operation knob, 18a, 18b...Release protrusion, 21...Release roller, 24...Actuation cam piece, 25...Push button, 26a, 26b...Inclination operating section.

Claims (1)

[Scope of utility model registration request] A buckle having a latch mechanism provided on the vehicle body side, a tongue that engages with the buckle provided at the lower end of the retractor housing, a pair of support arms provided at the upper part of the retractor housing, and the tips of the support arms. a fixed operating knob attached between the parts, a movable operating knob movably attached to the retractor housing, located below the fixed operating knob at the upper end and spaced a predetermined distance from the fixed operating knob, and a lower end of the movable operating knob. An emergency evacuation device for a seat belt, comprising a release means each having a protrusion or a roller that is moved by upward movement of an operating knob to release the engagement between the buckle and the tongue.