JP2549900Y2 - Emergency opening cock of bus door automatic opening and closing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic door opening / closing device for a bus, and more particularly to an emergency opening cock for enabling a door to be manually opened from inside and outside of a vehicle.

[0002]

2. Description of the Related Art According to the bus body structure standard, it is obliged that a door can be manually opened from inside and outside of a vehicle. For this purpose, an emergency opening cock is provided in a compressed air circuit of an automatic door opening / closing device. FIG. 5 is a configuration diagram of a compressed air circuit of a conventional bus door automatic opening / closing device. The door drive device 1 has a piston 5 slidably provided in a cylinder 4. The emergency opening cock 3 includes an in-vehicle operation handle 6 that can be operated from inside the vehicle, and an out-of-vehicle operation handle 7 that can be operated from outside the vehicle. Is provided. FIG. 6 is a cross-sectional view of a conventional emergency opening cock 3. A spool 10 is slidably fitted to the switching valve body 9, and an in-vehicle operation handle 6 and an out-of-vehicle operation handle 7 are provided at both ends of the spool 10.
Has been fixed. A leaf spring 11 is provided between the switching valve body 9 and the spool 10, and the spool 10 can be set at two positions on the air supply side and the exhaust side. Spool 10
Is formed with a land portion 12 having a small diameter.
Sliding allows the output port A to be selectively connected to the input port P or the exhaust port E.

Normally, the in-vehicle operation handle 6 of the emergency opening cock 3 is pushed to the air supply side (leftward in the figure), and the ports P and A communicate with each other, and the compressed air is supplied to the automatic opening / closing valve 2. I have. The closing operation of the door opening and closing switches in the driver's seat, when the automatic on-off valve 2 is in de-energized figure, port P and the port A and port B and port E ₂ is switched to a position which communicates compressed air door driving device is supplied to the right chamber of the first piston 5, the air in the left chamber of the piston 5, the port B and the port E ₂ of the automatic opening and closing valve 2 is discharged to the atmosphere, as a result, the piston 5 to the left Move and the door closes. When the automatic opening / closing valve 2 is excited and switched to the left position in the drawing, the ports P and B and the ports A and E ₁ communicate with each other, and the compressed air is supplied to the left chamber of the piston 5 of the door driving device 1. At the same time, the air in the chamber on the right side of the piston 5 is supplied to the ports A and E of the automatic on-off valve 2.
_The air is exhausted from ₁ and as a result, the piston 5 moves rightward and the door is opened.

[0004] In the event of an emergency exit of a passenger or the like, the in-vehicle operating handle 6 of the emergency opening cock 3 is moved to the exhaust side (to the right in the figure).
, The ports A and E communicate with each other, and the air in the chamber on the right or left side of the piston 5 is discharged to the atmosphere through the ports A and E of the emergency opening cock 3, so that the door is manually opened. Can be opened.

When the driver leaves the bus while the vehicle is stopped, the door is closed by the automatic opening / closing valve 2 by operating the door opening / closing switch in the driver's seat, and the in-vehicle operation handle 6 of the emergency opening cock 3 is opened. , The door is manually opened to get out of the vehicle, and then the operation handle 7 of the emergency opening cock 3 is operated to the air supply side to close the door with compressed air. When returning to the bus, outside the vehicle, the outside operation handle 7 of the emergency opening cock 3 is operated to the exhaust side to manually open the door and enter the inside of the vehicle, and supply the inside operation handle 6 of the emergency opening cock 3 inside the vehicle. Operate to the side to close the door.

[0006]

The mounting position of the emergency opening cock 3 is determined by the conditions that the passenger inside the vehicle can open and operate the cock window from outside the vehicle and operate the cock window from outside the vehicle at the same time. I have to be satisfied.
In this case, by attaching the emergency opening cock 3 shown in FIG. 6 to the side of the bus at the center or rear door of the bus, the above condition can be satisfied. As shown in FIG. 4, the cock window 13 on the outside of the vehicle is provided only in the front part of the vehicle body 14, so that the distance from the cock window 15 on the inside of the vehicle is increased. A long shaft 16 is connected to the operation handle 6 to support the operation.

However, various accessories are arranged at the front of the vehicle body. On the other hand, it is necessary to mount the in-vehicle operation handle 6 and the out-of-vehicle operation handle 7 of the emergency opening cock 3 in a straight line. The position where the emergency opening cock 3 is attached becomes an obstacle, and there is a problem that, for example, if the emergency opening cock 3 is attached at a steep inclination to avoid other equipment, the emergency opening cock 3 must be operated in an unreasonable posture.

In addition, since the long shaft 16 is connected to the in-vehicle operation handle 6 or the out-of-vehicle operation handle 7, a force in the bending direction is easily applied to the long shaft 16, and an extra frictional force is generated on the spool of the switching valve, thereby improving operability and operation. There is a problem that the durability is adversely affected.

Further, a packing 8 for maintaining airtightness is used for the switching valve body 9 and the spool 10, but if the packing 8 is left unused for a long time, the packing 8 and the sliding surface contact portion of the spool 10 are used. In this case, there is a problem that the oil film is broken, a large frictional resistance is generated at the time of initial operation, and the operability and durability are adversely affected.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an emergency opening cock of a bus door automatic opening / closing device which has a high degree of freedom in a mounting position and can improve operability and durability. Aim.

[0011]

For this purpose, the emergency opening cock of the automatic door opening / closing device for a bus according to the present invention comprises a door driving device 1 for opening and closing a door by an automatic opening / closing valve 2 and a compressed air of the door driving device 1 being manually operated. Emergency opening cock 2 to supply / exhaust by operation
0, the emergency opening cock 20 includes a valve spool 22 for supplying and discharging compressed air.
A switching member 21 having a link member 2
3, an operation handle 26 fixed to one end of the operation spool 25, and a wire member 27 fixed to the other end of the operation spool 25.
And an operation handle 28 outside the vehicle fixed to the other end of the wire member 27. The numbers added to the above configuration are for comparison with the drawings for easy understanding, and the configuration of the present invention is not limited by this.

[0012]

In the present invention, for example, as shown in FIG.
At the time of an emergency exit of a passenger, for example, when the operation handle 26 of the emergency opening cock 20 is pulled, the port A of the switching valve 21 is pulled.
Communicates with the port E, and the air in the chamber on the right side of the piston 5
The gas is discharged to the atmosphere through the ports A and E of the switching valve 21, and as a result, the door can be manually opened. When the driver leaves the bus while the vehicle is stopped, the driver operates the in-vehicle operation handle 26 to the exhaust side to manually open the door to get out of the vehicle. As a result, the operation spool 25 slides, and the rotation of the link member 23 causes the valve spool 22 to slide to the left in the drawing. As a result, the ports A and P of the switching valve 21 communicate with each other, and the door is compressed with compressed air. When the vehicle is closed and returned to the bus, the outside operation handle 28 is operated to the exhaust side to open the door manually to enter the vehicle outside the vehicle, and the inside operation handle 26 is operated to the air supply side in the vehicle to close the door. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1, 2 and 3 show an embodiment of the emergency opening cock of the automatic bus door opening and closing device according to the present invention,
1 is a schematic configuration diagram of a compressed air circuit, FIG. 2 is a sectional view of an emergency opening cock, and FIG. 3 is an enlarged sectional view of a main part of FIG.

In FIG. 1, the automatic door opening / closing device for a bus according to the present invention comprises a door driving device 1, an automatic opening / closing valve 2 comprising a five-way solenoid valve, and an emergency opening cock 20. The door driving device 1 has a piston 5 slidably provided in a cylinder 4. The emergency opening cock 20 includes a switching valve 21,
A valve spool 22 of the switching valve 21, an operation spool 25 connected to the valve spool 22 via a link member 23, and an in-vehicle operation handle 2 fixed to one end of the operation spool 25
6, a wire member 27 fixed to the other end of the operation spool 25, and an outside operation handle 28 fixed to the other end of the wire member 27.

The compressed air is sent to the input port P of the switching valve 21. In the switching valve 21, the output port A is switched and connected to the input port P or the exhaust port E.
, The input port P is switched and connected to the output port A or B, and the output port A or B is switched and connected to the exhaust port E ₁ or E _{2, so} that the compressed air in the left and right chambers of the piston 5 of the door driving device 1 Supply and exhaust.

The detailed structure of the emergency opening cock 20 will be described with reference to FIG. The valve spool 22 is provided on the valve body 29.
Are slidably fitted. A large-diameter land portion 30 and small-diameter land portions 31 and 32 are formed adjacent to the substantially central portion of the valve spool 22. By operation, the output port A can be selectively connected to the input port P or the exhaust port E. A seal packing 34 is provided between the valve body 29 and the valve spool 22,
Further, grooves 35 and 36 for holding the position are formed in the valve spool 22, and an O-ring 37 having a diameter slightly smaller than the outer diameter of the valve spool 22 is fitted in the groove 35.

The O-ring 37, as shown in FIG.
When the valve spool 22 slides and the position holding groove 35 is located in the groove 29a on the valve body 29 side, the O-ring 37 is pressed into the groove 35 at this position, and the valve spool 22 is moved to the valve body 2.
9 and the valve spool 22 slides, the O-ring 37 is elastically deformed as shown by a dotted line and retracted into the groove 29a, and the adjacent position holding groove 36 is inserted into the groove 29a on the valve body 29 side. When it comes, the O-ring 37 is pressed against the groove 36, and the valve spool 22 is held by the valve body 29 at this position. Thus, after operating the handles 26 and 28, the switching position is held so that the shaft of the valve spool 22 does not move due to vibration of the vehicle body or the like, so that the position holding mechanism can be extremely simplified. The position holding mechanism may be provided on the operation spool 25 described later.

In FIG. 2, an operation spool 25 is slidably fitted to the valve body 29 in parallel with the valve spool 22. The operation spool 25, the valve spool 22, and the valve body 29 are provided with pins 50, 51, 52, respectively.
When the holes of the link member 23 are fitted into these pins 50, 51, and 52, and the operation spool 25 slides, the link member 2
3 rotates around the pin 52 and slides the valve spool 22. From pin 52 to pins 50,5
Assuming that the distance to 1 is R, r, the operating force of the operating spool 25 is F ₀ , and the frictional force of the valve spool 22 is F ₁ ,
F ₀ = F ₁ · r / R, and the operating force of the operation spool 25 can be operated with a force smaller than the frictional force generated in the valve spool 22.

An in-vehicle operation handle 26 is fixed to one end of the operation spool 25, and an inner wire 27b of a wire member 27 is inserted into the other end of the operation spool 25 and fixed by screws 38 or caulking. Working spool 2
5 is provided with a locking piece 39, which slides in an elongated hole 40 formed in the valve body 29, whereby the stroke of the working spool 25 is set. The stroke may be set by providing retaining rings on both sides of the valve spool 22. An outer wire 27a is arranged on the outer periphery of the inner wire 27b, and one end of the outer wire 27a is fixed to the valve main body 29 by a holding fitting 41. The other end of the outer wire 27a is fixed to a handle guide member 44 fixed to the vehicle body frame 43 by a holding bracket 42, and the other end of the inner wire 27b is fixed to a wire fixing member 45 with a screw 46. , An operation handle 28 outside the vehicle is fixed.

The operation of the present invention having the above configuration will be described. Normally, the in-vehicle operation handle 26 of the emergency opening cock 20 is pushed to the air supply side (leftward in the figure), and the port P and the port A of the switching valve 21 communicate with each other, and the compressed air is supplied to the automatic opening / closing valve 2. ing. When the automatic opening / closing valve 2 is in a non-excited state by the closing operation of the door opening / closing switch of the driver's seat, the port P communicates with the port A and the port B communicates with the port E ₂ ,
The compressed air is supplied to the chamber on the right side of the piston 5 of the door drive device 1, and the air in the chamber on the left side of the piston 5 is discharged to the atmosphere from the port B and the port E ₂ of the automatic on-off valve 2. The piston 5 moves to the left and the door closes. When the automatic on-off valve 2 is energized and switches to the left position in the figure, the ports P and B and the ports A and E
₁ communicates exhaust, compressed air is supplied to the left chamber of the piston 5 of the door drive device 1, the right chamber of the air piston 5, the ports A and E ₁ of the automatic on-off valve 2 to the atmosphere As a result, the piston 5 moves to the right and the door is opened.

At the time of an emergency exit of the passenger, when the in-vehicle operation handle 26 of the emergency opening cock 20 is pulled to the exhaust side (to the right in the drawing), the slide of the operation spool 25 causes the link member 23 to rotate, and the valve to rotate. As a result of sliding the spool 22 rightward in FIG. 2, the state in which the port A and the port E of the switching valve 21 communicate with each other in FIG. , Through port E to the atmosphere, so that the door can be manually opened.

When the driver leaves the bus with the vehicle stopped, the door is closed by the automatic opening / closing valve 2 by closing the door opening / closing switch of the driver's seat, and the emergency opening cock 2 is opened.
After operating the in-vehicle operation handle 26 to the exhaust side and manually opening the door to get out of the vehicle, pulling the out-of-vehicle operation handle 28 of the emergency release cock 20 causes the operation spool 25 to slide through the wire member 27. Then, the rotation of the link member 23 causes the valve spool 22 to slide leftward in FIG. 2, so that the ports A and P of the switching valve 21 communicate with each other in FIG. 1, and the door can be closed with compressed air. When returning to the bus, outside the vehicle, the outside operation handle 28 of the emergency opening cock 20 is operated to the exhaust side to manually open the door and enter the inside of the vehicle, and supply the inside operation handle 26 of the emergency opening cock 20 inside the vehicle. The door can be closed by operating to the side.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made by those having ordinary knowledge in the technical field to which the present invention belongs. For example, in the above-described embodiment, the pin 52 serving as the rotation center of the link member 23 is provided on the valve body 29 side.
2 may be provided on the vehicle body side. Further, in the above embodiment, the link member 23 is provided on the right side of the operation spool 25 and the valve spool 22, but may be provided on the left side.

[0024]

[Effects of the Invention] As is apparent from the above description, according to the present invention, a door driving device that opens and closes a door with an automatic opening and closing valve;
An automatic opening / closing device for a bus having an emergency opening cock for manually supplying and discharging compressed air of the door driving device, wherein the emergency opening cock has a switching valve having a valve spool for supplying and discharging compressed air; An operation spool connected to the spool via a link member, an in-vehicle operation handle fixed to one end of the operation spool, a wire member fixed to the other end of the operation spool, and fixed to the other end of the wire member Since it is composed of a steering wheel outside the vehicle, even if the operating position inside and outside the car is far away, there is no need to arrange it in a straight line as in the past, it is possible to pass the wire member avoiding obstacles, Even if the position is eccentric from the position of the operation handle inside the vehicle, the mounting position of the operation handle outside the vehicle can be set freely. Further, the operation force of the operation spool can be operated with a force smaller than the frictional force generated in the valve spool, so that operability and durability can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a compressed air circuit showing an embodiment of an emergency opening cock of a bus door automatic opening / closing device according to the present invention.

FIG. 2 is a sectional view of the emergency opening cock in FIG. 1;

FIG. 3 is an enlarged sectional view of a main part of FIG. 2;

FIG. 4 is a schematic view showing a mounting example of a conventional emergency opening cock.

FIG. 5 is a configuration diagram of a compressed air circuit of a conventional bus door automatic opening / closing device.

FIG. 6 is a sectional view of a conventional emergency opening cock.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Door drive device, 2 ... Automatic opening / closing valve, 20 ... Emergency opening cock, 21 ... Switching valve 22 ... Valve spool, 23 ... Link member, 25 ... Operating spool 26 ... Car interior operation handle, 27 ... Wire member, 28 ...
Outside handle

Claims (1)

(57) [Scope of request for utility model registration] An emergency opening cock for a bus, comprising: a door driving device for opening and closing a door by an automatic opening / closing valve; and an emergency opening cock for supplying and discharging compressed air of the door driving device by manual operation. A switching valve having a valve spool for supplying and discharging compressed air, an operation spool connected to the valve spool via a link member, an in-vehicle operation handle fixed to one end of the operation spool, An emergency opening cock comprising a wire member fixed to the other end and an operation handle outside the vehicle fixed to the other end of the wire member.