JP3468361B2 - Seat locks used for bus emergency exit seats - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat lock used for an emergency exit seat of a bus.

[0002]

2. Description of the Related Art In a bus, an emergency exit seat generally has a structure in which an emergency passage is secured by being easily flipped up in front of a certain force in an emergency. With this type of structure, it is difficult to attach a seat belt that is loaded due to insufficient belt anchor strength.

[0003]

An object of the present invention is to securely lock an emergency exit seat on the floor of a bus at the time of collision by inputting from the seat belt, and attaching the seat belt to the emergency exit seat and wearing the seat belt. Providing a seat lock to be used on a bus emergency exit seat that allows and is easily unlocked in an emergency to allow the emergency exit seat to bounce forward and easily secure an emergency aisle for the bus It is in.

[0004]

[Means corresponding to the problem and its action]
An anchor rod fixedly disposed on the floor side in relation to an emergency exit seat hinged to the floor so that it can be flipped up forward near the emergency exit of the bus, and hingedly supported on the emergency exit seat, and A hook that is undone to the anchor rod and one end of the seat belt are supported by the emergency exit seat by a hinge connection, and at the time of a collision, the hook is input in the locking direction by the input from the seat belt. Includes a stopper that moves to hang the hook on the anchor rod, a tension spring that is stretched between the hook and the stopper to urge the hook in the releasing direction, and the seat belt is worn Since the input from the seat belt is small, move the hook a little in the locking direction with the stopper and move the anchor lock. Hook lightly the hook in the soil,
Then, at the time of a collision, the input from the seat belt will be large, so the stopper will move the hook greatly in the locking direction to hang it firmly on the anchor rod,
The anchor rod keeps the hook from slipping off, and if the seat belt is not worn, the tension spring rotates the hook and stopper out of contact with the anchor rod to disengage them. Place the hook, and place the emergency exit seat so that it can be easily flipped up above a certain force.

[0005]

DESCRIPTION OF SPECIFIC EXAMPLES The seat lock used in the emergency exit seat of the bus according to the present invention will be described below with reference to the specified and illustrated specific examples. FIGS. Figure 10 shows an embodiment 10 of a seat lock used in a bus emergency exit seat of the present invention utilized in a seat 34, in which the anchor rod 11 has an emergency exit 32 of its bus 30.
Is fixedly arranged on the floor 31 in relation to the emergency exit seat 34 which is hinged forwardly to the floor 31 in the vicinity of, and the hooks 12 are pin 22 at the rear of the emergency exit seat 34. The leg 39 is swingably supported on the lower end side of the leg 39, and can be detachably attached to the anchor rod 11. Further, the stopper 13 is positioned above the hook 12 and the pin 23 is used to insert the emergency exit sheet 34. Pivotably supported below its rear leg 39, with tip 20 engageable with cam surface 19 of its hook 12, and pivoted about its pin 23 upon input from seat belt 44. Being that hook 1
2 is lockable and unlockable on the anchor rod 11, and a tension spring 14 is stretched between the hook 12 and the stopper 13 to bias the hook 12 in the unlocking direction, and further, the belt.・ The guide 15 is a sheet of the emergency exit sheet 34 at an appropriate place.
The seat belt 44 is fixedly arranged on the side 36 of the cushion 35 to pass the seat belt 44 thereof, and further, the belt lock 16 is separated from the stopper 13 at an appropriate distance in the belt length direction. The seat belt 44 is fixedly attached to the one end 45 side, and when the seat belt 44 is pulled a predetermined length at the time of a collision, it comes into contact with the belt guide.

The anchor rod 11 has its rear leg 39 of its emergency exit seat 34 as shown in FIG.
It is located in the floor pocket 25 which is located on the side and opens into the floor 31 just below the emergency exit seat 34. Of course, the floor pocket 25 has a slit opening 2
At 6, the floor 31 is opened.

The hook 12 is swingably hinged to the side surface 40 of the rear leg 39 by the pin 22 and supported by the rear leg 39, and a mounting flange 41 of the rear leg 39 is pierced. It extends through the guide slit 42 from the slit opening 26 into the floor pocket 25 and is hangable on the anchor rod 11. The cam surface 19 is the outer peripheral end surface 18 of the root 17 of the hook 12.
And the hook 12 has its cam surface 19
Then, the tip 20 of the stopper 13 can be contacted.

The stopper 13 is swingably hinged to the side surface 40 of the rear leg 39 by the pin 23 at a predetermined distance above the hook 12 and is supported by the rear leg 39. , And its tip 2
0 can be engaged with the cam surface 19 of the hook 12. Further, the stopper 13 hinges one end 45 of the seat belt 44 to the base 21,
Then, the input from the seat belt 44 is swung around the pin 23 against the tension spring 14 to slide the tip 20 of the hook 12 in contact with the cam surface 19 of the hook 12. Then, the hook 12 is rotated around the pin 23 so that the hook 1
Hang 2 on the anchor rod 11.

A coil spring is used as the tension spring 14, one end of which is attached to the hook 12,
The other end is fixed to the stopper 13 and the hook 1
2 and the stopper 13, and the force of the coil spring 14 always acts on the hook 12 and the stopper 13 so as to move the hook 12 in the releasing direction and the stopper 13 in the separating direction. The hooks 12 and the stoppers 13 that act so as not to contact each other
Rotate the hook, place the hook 12 off the anchor rod 11, and insert the emergency exit seat 34
Place it so that it can be flipped up easily with a certain force.

The belt guide 15 is made of a flat sleeve having a belt through hole 24 which is open at both ends, and on the guide of the seat belt 44, the emergency guide is located in front of the stopper 13 in position. Sheet 34
It is attached to the side 36 of the seat cushion 35 and is screwed to the frame (not shown) side of the seat cushion 35.

The belt lock 16 is assembled by stacking the pair of elongated flat bars on both surfaces of the seat belt 44 on the one end 45 side thereof, and co-tightening the seat belt 44. Is pulled, the lower end of the belt guide 15 is stopped and the input from the seat belt 44 is also applied to the emergency exit seat 34.

Further, in the emergency exit seat 34 utilizing the seat lock 10, 37 is a seat back, 38 is a front leg, and 43 is a seat.
It is a hinge pin. Also, 33 is an emergency exit door.

Therefore, when the seat belt 44 is worn, since the input from the seat belt 44 at that time is small, the hook 12 is tightened by the tension belt.
It is slightly moved in the locking direction by the stopper 13 against the spring 14 and lightly hooked on the anchor rod 11. At the time of a collision, the input from the seat belt 44 becomes large, so that the hook 12 becomes the stopper 1.
Anchor rod 1 moved in the locking direction by 3
When the seat belt 44 is pulled to a predetermined length, the belt lock 16 abuts against the lower end of the belt guide 15, and the seat belt 44 is stopped. The input from the belt 44 is also carried by the emergency exit sheet 34.

If the seat belt 44 is not worn, the hook 12 and the stopper 13 are rotated by the tension spring 14 in a non-contact state, and the hook 12 is disengaged from the anchor rod 11. The emergency exit seat 34 is then placed on the floor 31 with only ordinary locking means so that the emergency exit seat 34 can be easily flipped up forward with a certain force or more. An emergency passage can be secured at the emergency exit 32.

As will be apparent from the specific embodiments of the invention described above with reference to the drawings, those of ordinary skill in the art to which the present invention pertains have the subject matter of the invention. Is the nature of the invention (na
It is easily embodied in another embodiment that is derived from the true) and the substance, and that is objectively recognized as having them internalized. Of course, the contents of the present invention correspond to the subject of the invention (be commensu).
rate with) and is essential for the establishment of the invention.

[0016]

Benefits of the Invention As will be appreciated from the foregoing, the seat locks used in the emergency exit seats of the bus of the present invention relate to emergency exit seats that are hingedly pivotable forward to the floor near the emergency exit of the bus. Then, the anchor rod fixedly placed on the floor side is supported by the emergency exit seat by a hinge connection, and the hook that is hung and removed from the anchor rod is supported by the emergency exit seat by a hinge connection. Connect one end of the seat belt, and in the event of a collision, pull the hook between the hook and stopper with the stopper that moves the hook in the locking direction by the input from the seat belt and hangs the hook on the anchor rod. Seat used for the emergency exit seat of the bus according to the present invention, including a tension spring for urging the hook in the releasing direction. In the lock, the time of a collision, the seat that
Input from the belt ensures that the emergency exit seat can be locked on the floor of the bus, the seat belt is attached to the emergency exit seat and can be worn, and when the seat belt is not worn its hooks Placed off the anchor rod, in an emergency, the emergency exit seat can be flipped up forward to easily and quickly secure an emergency passageway leading to the emergency exit on the bus, which is very useful for bus emergency exit seats. It is practical.

[Brief description of drawings]

FIG. 1 is a side view showing an emergency exit seat of a route bus utilizing a specific example of a seat lock used for the emergency exit seat of the bus of the present invention.

FIG. 2 is an enlarged side view of the seat lock shown in FIG.

FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG.

[Explanation of symbols]

11 Anchor Rod 12 hooks 13 Stopper 14 Tension spring 15 Belt guide 16 belt lock 19 Cam surface

Claims (2)

(57) [Claims] 1. An anchor rod fixedly arranged on the floor side in relation to an emergency exit seat hinged to the floor so that it can be flipped up forward in the vicinity of the emergency exit of the bus, and the emergency exit seat is hinged to the emergency exit seat. Supported and hooked off the anchor rod and one end of the seat belt supported by the emergency exit seat by a hinge connection, and at the time of collision, the input from the seat belt Used for bus exit seats that include a stopper that moves the hook in the locking direction to hang the hook on the anchor rod and a tension spring that is stretched between the hook and the stopper to urge the hook in the releasing direction. Seat locks. 2. An anchor rod fixedly disposed on the floor side in relation to an emergency exit seat hinged to the floor so that it can be flipped up forward in the vicinity of the emergency exit of the bus, and the emergency exit seat is hinged to the emergency exit seat. Supported and hooked off the anchor rod and one end of the seat belt supported by the emergency exit seat by a hinge connection, and at the time of collision, the input from the seat belt A stopper that moves the hook in the locking direction and hangs the hook on the anchor rod, a tension spring that is stretched between the hook and the stopper to urge the hook in the releasing direction, and an emergency exit sheet at an appropriate place. A belt guide that is fixedly placed on the side of the seat cushion to pass the seat belt, and in the belt length direction A belt that is fixedly attached to the one end side of the seat belt at an appropriate distance from the stopper, and hits the belt guide when the seat belt is pulled a predetermined length at the time of the collision. -Seat locks used for bus emergency exit seats, including locks.