JP2002122299A - Gas vessel for gas power vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas vessel for a gas power vehicle capable of using ordinary pressure tube as gas supply tube supplying fuel gas to an engine of the vehicle and ordinary pressure gas connection structure as a connection part with the gas supply tube. SOLUTION: This gas vessel A for a gas power vehicle has a gas supply valve B for a gas power vehicle installed on a gas vessel main body A1 and a pressure reducing valve C provided integrally with the gas vessel main body A1 on outside of the gas vessel main body A1. The gas supply valve B and the pressure reducing valve C are connected with a gas circulation tube D provided in the gas vessel main body A1. Opening the gas supply valve B supplies gas pressurized and stored in the gas vessel main body A1 to the pressure reducing valve C via the gas circulation tube D. Gas whose pressure is reduced by the pressure reducing valve C can be supplied to the engine of the vehicle connected outside of the gas vessel main body A1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gas container for a gas powered vehicle for supplying a pressurized gas such as natural gas to an engine of a powered vehicle driven by gas fuel.

[0002]

2. Description of the Related Art Gasoline vehicles have conventionally been used as one of transportation means. In recent years, from the viewpoint of environmental protection, natural gas, which is a cleaner fuel than gasoline fuel, has been used as energy instead of gasoline fuel. Attention has been paid to the development of vehicles using this natural gas as fuel.

A vehicle using natural gas as a fuel is provided with a gas container in which natural gas is compressed and filled.
The natural gas filled in the gas container is supplied to the engine of the vehicle through a gas supply pipe connected to the gas container and having a pressure reducing valve interposed therebetween.

[0004] However, the natural gas filled in the gas container has a very high pressure of about 200 MPa, and the natural gas filled in the gas container is supplied to the gas supply pipe at a high pressure. The pressure of the natural gas is reduced to a predetermined pressure by the pressure reducing valve interposed in the gas supply pipe and then supplied to the engine of the vehicle. Therefore, the gas supply pipe disposed closer to the gas container than the pressure reducing valve needs to use a special pressure-resistant pipe that does not break even when the high-pressure natural gas flows.

Further, the connecting portion between the gas supply pipe and the gas container must have a special connection structure so that the high-pressure natural gas does not leak.
There is also a problem that it is very troublesome and costly to perform such special connection processing for each unit.

[0006]

According to the present invention, a normal pressure-resistant pipe can be used as a gas supply pipe for supplying a fuel gas to an engine of a vehicle, and a normal pressure-resistant gas is also provided at a connection portion with the gas supply pipe. Provided is a gas container for a gas powered vehicle, which can use a connection structure for the vehicle.

[0007]

According to a first aspect of the present invention, there is provided a gas container for a gas-powered vehicle, wherein a gas supply valve for a gas-powered vehicle is mounted on an edge portion of the gas container body, and the gas supply valve is provided outside the gas container body. A pressure reducing valve is provided integrally with the gas container body, and the gas supply valve and the pressure reducing valve are connected by a gas flow pipe provided in the gas container body.
By communicating the gas supply valve, the gas pressurized in the gas container main body is supplied to the pressure reducing valve through the gas flow pipe by opening the gas supply valve. It is characterized in that it can be supplied to an engine of a vehicle connected outside the main body.

A gas container for a gas powered vehicle according to a second aspect of the present invention is the gas container for a gas powered vehicle according to the first aspect, wherein gas in another gas container is supplied into the gas container body through a gas supply valve. It is characterized by having such a configuration.

[0009]

When the gas-powered vehicle gas supply valve of the gas-powered vehicle gas container according to the present invention is opened, the high-pressure gas filled in the gas container body is supplied to the gas supply vehicle provided in the gas container body. The high-pressure gas flowing into the gas flow pipe through the valve and flowing into the gas flow pipe is provided outside the gas container main body, preferably at a pressure reducing valve integrally provided on the outer bottom surface of the gas container main body. After being supplied and reduced to a predetermined pressure, it is supplied to the engine of the vehicle through a gas supply pipe connected to the gas container for a gas powered vehicle.

As described above, according to the gas container for a gas-powered vehicle, the high pressure gas filled in the gas container body is reduced to a predetermined pressure by the pressure reducing valve, and then connected to the gas supply pipe. The connection structure between the gas supply pipe and the gas container for a gas powered vehicle uses a normal connection structure for a pressure gas without employing a special connection structure for a high-pressure gas. Can be.

Further, since the gas flow pipe connecting the gas supply valve and the pressure reducing valve is disposed in the gas container main body, the gas pressure flowing through the gas flow pipe and the gas flow The gas pressure filled in the container body is always equal, that is, the inside and outside pressures of the gas flow pipe are always equal, and thus the gas flow pipe is disposed under the atmospheric pressure like a conventional gas supply pipe. As a result, pressure fatigue caused by a difference in pressure between the inside and outside of the gas supply pipe, such as when a high-pressure gas is circulated therein, does not occur, and stable gas circulation can be ensured for a long period of time.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a gas container for a gas powered vehicle according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the gas container A for a gas-powered vehicle has a gas supply valve B for a gas-powered vehicle attached to an edge A11 opened at the upper end of a cylinder-shaped gas container body A1. Outside the gas container body A1, a pressure reducing valve C is provided integrally with the gas container body A1, and the gas supply valve B and the pressure reducing valve C are provided inside the gas container body A1. Gas distribution pipe D
Connected and communicated by

In FIG. 2, reference numeral 1 denotes a metal valve body of the gas-powered gas supply valve for a gas-powered vehicle, which is detachably screwed to a female screw portion of an edge portion A11 of a gas container body A1 on an outer peripheral surface of a central portion thereof. A possible screw portion 1a is provided, and a vertical shaft hole 2 penetrating between the upper and lower end surfaces is provided therein. The upper portion of the vertical shaft hole 2 is formed to have a slightly larger diameter than the lower portion. A metal upper shaft 3 is rotatably inserted in the lower hole.
A metal lower shaft 4 is provided inside 2b so as to be vertically slidable and non-rotatable.

Further, a gas inlet member 5 is screwed into a lower end opening 2c of a lower hole 2b of the vertical shaft hole 2, and a gas is provided between the gas inlet member 5 and the lower surface of the lower shaft 4. Inflow space 9
Are formed. The gas inlet member 5 is a tubular lower half 5a in which a valve body 6 described later is vertically displaceably mounted.
And a bush-like upper half portion 5b screwed to the inner peripheral surface of the lower end opening of the lower hole 2b of the valve body 1 and integrally penetrated vertically through the center of the bush-like upper half portion 5b. A small-diameter gas inlet 7 penetrates, and a valve seat 5c is formed on the outer peripheral surface of the lower end of the opening of the gas inlet 7, and the upper hemispheric surface of the valve body 6 is detachably attached to the valve seat 5c. By crimping
The gas inlet 7 is configured to be opened and closed.

The valve body 6 is formed in a spherical body.
The lower hemispherical opening of the gas inlet 7 is opened and closed by metal-touching the upper hemisphere of the spherical body to the valve seat 5c of the bush-like upper half 5b of the gas inlet member 5. .

On the other hand, during the operation of compressing and filling the gas into the gas container body A1 from the gas filling port 23 described later, the gas container body A1 and the valve body 1 are cooled by the adiabatic change of the gas,
After the gas is compressed and filled into the gas container body A1, the gas loses its kinetic energy and its temperature rises, so that the gas container body A1 and the valve body 1 are reheated. As described above, the gas container body A1 and the valve body 1 are repeatedly cooled and heated by the compression filling operation of the gas into the gas container body A1. As described above, the upper hemisphere of the valve element 6 and the valve seat
Without interposing an elastic member such as rubber between it and 5c,
Since the lower end opening of the gas inlet 7 is opened and closed by making the upper hemispherical surface of the valve body 6 metal-touch the valve seat 5c, it is deteriorated by cooling and reheating as an elastic member. There is no such problem, and the opening and closing of the lower end opening of the gas inlet 7 by the valve body 6 can be always completely and reliably performed.

A cylindrical connecting member 8 having a smaller diameter and a longer length than the gas inlet 7 is inserted through the gas inlet 7, and a lower end of the cylindrical connecting member 8 is connected to the valve 6. While embedded and fixed at the center of the upper hemisphere, the upper end thereof is connected to the lower end of the lower shaft 4, and the valve body 6 and the lower shaft 4 are connected via the cylindrical connecting member 8. It is configured to be connected and move up and down integrally. The connection structure between the columnar connection member 8 and the lower shaft 4 will be described in detail.
At the lower end of the lower shaft 4, there is formed a columnar space 42a opened at the lower end surface, and a suspension member 43 is screwed and integrated with the lower end opening of the columnar space 42a. A through-hole 43a having a diameter larger than that of the columnar connecting member 8 and smaller than the columnar space 42a is formed in a central portion of the suspension support member 43 so as to penetrate in a vertical direction. After the upper end of the columnar connecting member 8 is inserted into the through hole 43a of the suspension support member 43, the upper end of the columnar connecting member 8 has a smaller diameter than the cylindrical space 42a and A large-diameter head 8b larger than the through-hole 43a is integrally provided, and the large-diameter head 8b is engaged with the upper end opening end surface of the through-hole 43a in the cylindrical space 42a. The valve body 6 and the lower shaft 4 are connected via the cylindrical connecting member 8.

A stopper 8a having a diameter smaller than that of the lower hole 2b is integrally provided at an upper portion of the columnar connecting member 8 between an upper end surface of the gas inlet member 5 and a lower surface of the suspension member 43. A spring 10 is press-fitted between the lower surface of the stopper 8a and the upper end surface of the gas inlet member 5, and the stopper 8a is mounted on the upper surface of the stopper 8a.
And a fixing member 8c integrally connecting the cylindrical connecting member 8 and the cylindrical connecting member 8.
In the state of being press-bonded to 5c, a gap 44 is provided between the fixing member 8c and the suspension support member 43. In other words, when the spring 10 is maximally extended, the force of the spring 10 holds the valve body 6 in a state in which the gas inlet 7 is closed, and the lower surface of the suspension member 43 and the fixing member
The upper surface of 8c is configured to be separated.

As shown in FIGS. 2 and 3, the lower shaft 4 has an upper half formed on a small-diameter shaft portion 41, and a lower half of the lower shaft 4 which is one turn smaller than the small-diameter shaft portion 41. While formed in the large regular hexagonal columnar body 42, a co-rotation preventing member 21 is screwed and integrated with a center portion of the vertical shaft hole 2 in the lower hole 2b. Is provided with a through hole 21a penetrating in the vertical direction and substantially conforming to the planar shape of the regular hexagonal columnar body 42 of the lower shaft 3.
The regular hexagonal column-shaped body portion 42 of the lower shaft 3 is inserted therein so as to be non-rotatable and slidable in the vertical direction. Also, a plurality of semi-cylindrical gas flow passages 21b, 21b,... Are formed at regular intervals on the inner peripheral surface of the co-rotation prevention member 21 so as to penetrate in the vertical direction. 7 is the gas flow passage 21b
, 21b... Are always in communication with the intermediate passage 11 provided on the side of the valve body 1.

The upper shaft 3 has a lower half formed with a larger diameter than the upper half, and a central hole 32 opened at the lower end surface at the center of the large diameter portion 31 to form an inner periphery of the central hole 32. A female screw portion 32a is formed on the surface, and a small diameter shaft portion of the lower shaft 4 is formed in the center hole 32.
A male screw part 41a formed on the outer peripheral surface of the small diameter shaft part 41 is screwed into the female screw part 32a into which the upper end part of the lower shaft 41 is inserted. It is configured such that it cannot rotate and slides vertically in the lower hole 2b.

The screwing structure of the upper shaft 3 and the lower shaft 4 will be described in detail. The female screw part 32a of the upper shaft 3 and the male screw part 41a of the lower shaft 4 are trapezoidal screws and are formed as multi-threaded screws. The lead angle of the screw portion 41a is configured to be larger than the friction angle of the screw surface, and the upper shaft 3 and the lower shaft 4 are easily screwed together. Therefore, if the lower shaft 4 is moved upward, that is, in a direction to push up toward the upper shaft 3, the upper shaft 3
Can be urged in the rotational direction by the multiple male and female screw portions 41a and 32a.

An O-ring 41b is fixed to the upper outer peripheral surface of the lower shaft 4, and the O-ring 41b allows the outer peripheral surface of the upper end portion of the lower shaft 4 and the lower portion of the vertical shaft hole 2 opposed thereto. The gap between the hole 2b and the inner peripheral surface is filled. Therefore, the gas flowing into the vertical shaft hole 2 from the gas inlet 7 is screwed to the upper shaft 3 and the lower shaft 4, that is, the gas above the lower shaft 4 in the center hole 32 of the upper shaft 3. It does not flow into or stay in the space above the end face, and prevents the lower shaft 4 from screwing upward in the center hole 32 of the upper shaft 3 due to the resistance to the compression of the gas that has flowed in. Such an unexpected situation does not occur, and the upward screwing of the lower shaft 4 is always smooth.

Upper and lower annular seal members 12a and 12b are mounted on upper and lower outer peripheral edges of the large diameter portion 31 of the upper shaft 3, respectively, and the upper annular seal member 12a has an upper end surface. Ring-shaped stopper member 13 fixed to the upper end opening of the upper hole 2a above the large diameter portion 31 of the upper shaft 3.
Is pressed and received on the lower surface of the upper hole 2a, and the outer peripheral surface thereof is pressed against the inner peripheral surface of the upper hole 2a. The lower annular seal member 12b is pressed and received on the upper end opening end surface of the lower hole 2b. Further, an upper end shaft portion of the upper shaft 3 is projected into a lower portion of a box body 14 integrally fixed to an upper end surface of the valve body 1.

The upper shaft 3 between the upper end surface of the ring-shaped stopper member 13 and the outer bottom surface of the box body 14.
Next, as shown in FIG. 4, one end of a spiral spring 15 wound around the upper shaft 3 is fixed, and the other end of the spiral spring 15 is fixed to the valve body 1 to restore the spiral spring 15. The upper shaft 3 is constantly urged by the force in the direction in which the valve body 6 closes the gas inlet 7, that is, in the direction in which the lower shaft 4 is pulled up.
The center of a first disk member 16 disposed on the inner bottom of the box body 14 is integrally fixed to the upper end of the upper shaft 3. As shown in FIG. 5, a plurality of locking protrusions 161 having the same shape are protruded from the outer peripheral surface of the first disk member 16 at regular intervals in the same direction. The locking protrusion 161 is formed in a substantially right-angled triangular shape on a plane, and has a rear surface serving as a locking surface 161a for locking the lock mechanism 20 described later, and a front end surface 161b having a front surface inclined rearward. Is formed. A single engagement projection 162 projects upward from the outer periphery of the upper surface of the first disk member 16.

Further, a second disk member 17 is disposed in the box body 14 above the first disk member 16. The second disk member 17 has a through hole 171 penetrating in the vertical direction at the center thereof, and the through hole 171 extends upward from the center of the upper surface of the first disk member 16.
163 is rotatably fitted.

A gear 172 meshing with the gear E1 of the drive motor E is engraved on the outer peripheral surface of the second disk member 17, and the gear E1 of the drive motor E rotates to rotate the second gear E1. The disk member 17 is configured to rotate.
On the lower surface of the second disk member 17, an engagement piece 173 that engages with the engagement projection 162 of the first disk member 16 projects downward, and the engagement piece 173 is When the gas inlet 7 is closed by the valve 6, the front surface thereof is engaged with the rear surface of the engaging projection 162 of the first disk member 16. A limit pressing piece is provided on the upper part of the second disk member 17.
174 is projected in the horizontal direction, and the limit pressing piece 17
The first limit switch 18 and the second limit switch 19, which will be described later, disposed on the rotation track 4 of FIG.

By the operation of the drive motor E, the gear E1
By rotating the second disk member 17 meshed with the gear E1.
And the engagement piece 17 of the second disk member 17 is rotated.
3 and the engagement protrusion 162 of the first disk member 16 engages to transmit the rotational force of the second disk member 17 to the first disk member 16 and to transfer the first disk member 16 to the spiral spring 15. The lower shaft 4 is moved downward by rotating it against the gas inlet 7.
Completely open. The locking projection 161 of the first disk member 16 is locked by a lock mechanism 20 described later so as to maintain the rotation position of the upper shaft 3 and maintain the open state of the gas inlet 7.

The lock mechanism 20 comprises a movable lock member 21 and a solenoid 22. The movable lock member 21 has a base end portion of a lever 211 having a front end surface formed on an inclined end surface 211a, and the movable body 21 is connected to the box body 14 by the first lock member. The lever 211 is rotatably pivoted toward the one disk member 16 and the lever 211 is
3 urges the first disk member 16 away from the locking projection 161 side, and furthermore, an engagement member 212 is provided at the center of the lever 211 so as to project toward the first disk member 16. The engaging surface 212a of the engaging projection 161 of the first disk member 16 can be engaged with the front surface of the engaging member 212.

When the solenoid 22 is energized, the solenoid 22 protrudes toward the lever 211 against the elastic pressing force of the spring 222, and slides the lever 211 to the first disk member while sliding the inclined end surface 221a against the inclined end surface 211a of the lever 211. An actuating rod 221 having a head 221b that rotates to the 16 side is provided, and the engagement member 212 is locked to the locking surface 161a of the locking protrusion 161 of the first disk member 16 by the rotation of the lever 211. Along with
When no power is supplied, the operating rod
221 is retracted to release the lock with lever 211, and lever 21
The first engagement member 212 is configured to be disengaged from the locking projection 161 of the first disk member 16.

A first limit switch 18 and a second limit switch 19 are provided on the side wall of the box body 14. Specifically, the second limit switch 19 is disposed on the rotation locus of the limit pressing piece 174 of the second disk member 17, and the opening of the gas inlet 7 by the valve body 6 is completed. Locking surface 161a of locking protrusion 161 of first disk member 16
Is disposed at the rotation position of the limit pressing piece 174 of the second disk member 17 when it is locked by the engaging member 212 of the lever 211 of the lock mechanism 20.

The second limit switch 19 is
The solenoid 22 of the lock mechanism 20 is energized by the pressing of the second disc member 17 by the limit pressing piece 174,
By projecting the operating rod 221, the lever
The engaging member 212 of the first disk member 16 is
In addition to being locked to the first locking surface 161a, an electric signal is sent to the drive motor E to reverse the rotation direction of the gear E1 of the drive motor E.

The first limit switch 18 is disposed on the rotation locus of the limit pressing piece 174 of the second disk member 17 and the gas inlet 7 is closed by the valve 6. Limit pressing piece of the second disk member 17 at
174 standby positions. The first limit switch 18 sends an electric signal to the drive motor E by pressing the second disc member 17 whose rotation direction has been reversed by the second limit switch 19 with the limit pressing piece 174, and the drive motor E The driving is stopped, and the rotation of the second disk member 17 is stopped.

Reference numeral 29 denotes a valve body 1 protruding from the gas container body A1.
A gas release port opened on the outer peripheral surface of the gas discharge port, and this gas release port 29 is a fusible alloy that melts when it reaches a certain temperature or higher.
While the gas escape port 29a is buried, the gas release port 29 is vertically penetrated into the valve main body 1 and has a lower end opened to the lower end surface of the valve main body 1 and communicates with the gas container main body A1. It is connected to and communicates with the upper end of the gas escape passage 30.

A gas supply passage 101 having an upper end connected to and communicating with the upper end of the intermediate passage 11 and having a lower end opening at the lower end surface of the valve body 1 is formed in the gas container body A1. The gas supply passage 101 and the upper portion of the lower hexagonal columnar body 42 of the lower shaft 4 in the lower hole 2b are connected and communicated via the intermediate passage 11.

The lower end opening of the gas supply passage 101 is air-tightly connected to the upper end opening of the gas flow pipe D.
The inside of the lower hole 2b and the gas flow pipe D are always connected and connected through the intermediate passage 11 and the gas supply passage 101.

As shown in FIG. 6, a gas filling port 23 is opened in the upper part of the valve body 1. The gas filling port 23 has a built-in check valve 24 which opens only in the gas filling direction. The lower end of the opening of the charging passage 25 through the filled charging passage 25 is
It communicates with A1.

The gas supply valve B for a gas-powered vehicle constructed as described above is provided on a gas container body A1 filled with a pressure gas to be mounted and installed on a vehicle, at an edge portion A11 of the gas container body A1. The screw portion 1a of the valve body 1 is hermetically screwed into the screw hole, so that the lower half thereof is attached to the gas container body A1 so as to project into the gas container body A1.

On the other hand, as shown in FIG. 1, the straight gas flow pipe D connected to and communicated with the lower end opening of the gas supply passage 101 of the gas-powered vehicle gas supply valve B is, as shown in FIG. The inside of A1 is vertically oriented, and the lower end portion is disposed so as to hermetically penetrate the bottom surface of the gas container body A1 and protrude outside the gas container body A1.

Further, a pressure reducing valve storage chamber A12 is integrally provided on the outer bottom surface of the gas container body A1, and the pressure reducing valve storage chamber A12 is provided.
A pressure reducing valve C is integrally provided on the outer bottom surface of the gas container body A1 in A12, and a projecting lower end of the gas flow pipe D projecting outward from the bottom surface portion of the gas container body A1 is It is airtightly connected and communicated directly with the pressure reducing valve C without being exposed to the outside air. As the pressure reducing valve C, a known pressure reducing valve C conventionally used is used.

Further, a gas outlet pipe C1 having one end connected to and communicating with the pressure reducing valve C and the other end projecting out of the pressure reducing valve storage chamber A12 is connected to and connected to the pressure reducing valve C. A gas pressure detecting device C12 for detecting the pressure of the gas flowing through the gas outlet pipe C1 is provided at a protruding end of the gas outlet pipe C1 protruding outward from the pressure reducing valve storage chamber A12. ing.

Next, how to use the gas container A for a gas powered vehicle will be described. First, as shown in FIG. 1 and FIG. 7, the gas filling port 23 of the gas container A for a gas powered vehicle is
The other end is connected to a gas supply port S provided in the vehicle and having a check valve therein, and one end of a gas filling pipe F connected to the gas supply port S is connected to the gas supply port S.
Communicate. A gas pressure detecting device F1 for detecting the gas pressure flowing through the gas filling tube F is provided at one end of the gas filling tube F, and the gas filling tube F is provided at the center of the gas filling tube F. Is provided with a gas filling valve F2 that can be opened and closed freely. The gas pressure detection device F1 is connected to a fuel meter provided in the driver's seat of the vehicle, and the gas pressure detected by the gas pressure detection device F1 is configured to be displayed on the fuel meter. ing.

Further, one or a plurality of ordinary gas containers V are connected and communicated between the gas pressure detecting device F1 and the gas filling valve F2 in the gas filling tube F. The inside of the gas container body A1 and the inside of the gas container V
The gas filling pipe F, the gas filling port 23, and the filling passage
It is connected and connected through 25. And
The check valve 24 disposed in the charging passage 25 is normally opened by the gas pressure of the gas container V, and the pressure in the gas container body A1 and the pressure in the gas container V are normally increased. Are configured to always have the same pressure, that is, the pressure gas in the gas container body A1 and the pressure gas in the gas container V are consumed at the same rate.

Incidentally, the amount of the pressurized gas in the gas container V was reduced, the gas pressure in the gas container V was lowered, and the closing force of the check valve 24 became larger than the gas pressure in the gas container V. In this case, the filling passage 25 is closed by the check valve 24, but in such a state, the gas container V and the gas container main body are passed through the gas supply port S in a manner described later. A1 is supplied and filled with pressure gas.

On the other hand, the other end of the gas supply pipe G, which is connected and connected to the engine I of the vehicle, is connected and connected to the gas outlet pipe C1. The gas supply pipe G is provided with a base valve G1 that can open and close the gas supply pipe G freely. At this time, since the gas flowing out of the gas outlet pipe C1 is reduced to a desired pressure by the pressure reducing valve C, the connection structure between the gas supply pipe G and the gas outlet pipe C1 can withstand high-pressure gas. It is sufficient to adopt a connection structure capable of withstanding normal pressure gas without adopting a special connection structure, and the connection between the gas supply pipe G and the gas outlet pipe C1 can be easily and smoothly performed. .

When the power is turned on at the time of starting the vehicle, the drive motor E operates and the gear E1 of the drive motor E rotates. Then, the second disk member 17 meshed with the gear E1 rotates clockwise in FIG.
The engagement piece 173 protruding from the lower surface of 17 is rotated from the position shown by the imaginary line in FIG. 5 to the position near the engagement member 212 of the lever 211 shown in FIG. At this time, as described above, the engagement pieces 17 protruding from the lower surface of the second disc member 17 are provided.
3 is locked on the back side of the engaging projection 162 of the first disk member 16, and the first disk member 16 rotates integrally with the second disk member 17 to the above position, and the rotational power is reduced. The upper shaft 3 is transmitted to the upper shaft 3 fixed to the first disk member 16 so that the upper shaft 3 is a spiral spring.
Rotate clockwise against 15 forces.

When the upper shaft 3 rotates, the lower shaft 4 in which the male screw portion 41a is screwed with the female screw portion 32a of the upper shaft 3 is pushed down, and the hanging support member of the pushed down lower shaft 4 is provided.
The lower surface of 43 is instantaneously brought into contact with a fixing member 8c fixed to the upper surface of the stopper 8a of the cylindrical connecting member 8 to push down the cylindrical connecting member 8 against the spring 10 so that the cylindrical connecting member 8 By the downward movement, the valve body 6 fixed to the lower end is pushed down to open the gas inlet 7, and the inside of the gas container body A1 passes through the gas inlet 7 and the gas flow passages 21b, 21b,. It communicates with the passage 11. Accordingly, after the pressure gas in the gas container body A1 flows into the gas inlet 7, the gas passes through the intermediate passage 11 and the gas supply passage 101 through the gas inflow space 9 and the gas flow passage 21b. The gas flows into the gas flow pipe D connected to and connected to 101.

The pressure gas flowing into the gas flow pipe D is supplied to a pressure reducing valve C connected and connected to the gas flow pipe D. The pressure gas is reduced to a predetermined pressure by the pressure reducing valve C. The gas is supplied to a gas outlet pipe C1 connected and connected to C. Further, the decompressed gas flowing into the gas outlet pipe C1 is supplied to the engine I of the vehicle through a gas supply pipe G connected and connected to the gas outlet pipe C1. The base valve G1 interposed in the gas supply pipe G is in an open state.

As described above, when the upper shaft 3 rotates until the valve body 6 moves down and the gas inlet 7 is opened, the limit pressing piece 174 of the second disk member 17 is moved to the second limit switch. Upon reaching the position 19, the second limit switch 19 is pressed.

Then, a signal is sent from the second limit switch 19 to the solenoid 22, and the solenoid 22 is energized, and the operating rod 221 projects against the elastic pressing force of the spring 222, and the head 221b tilts. Lever 21 with end face 221a
The lever 211 is rotated toward the first disk member 16 against the force of the spring 213 while slidingly contacting the front end inclined end surface 211a of FIG. 1 and is protruded from the lever 211 toward the first disk member 16 side. The engaging member 212 is engaged with the locking projection 161 of the first disk member 16.
Is located on the rotation locus of.

Further, a signal is also transmitted from the second limit switch 19 to the drive motor E, which reverses the direction of rotation of the gear E1, and the second disk member engaged with the gear E1. Reverse the direction of rotation of 17.

Then, the first disk member 16 is rotationally urged in the opposite direction by the force of the spiral spring 15 fixed to the upper end of the upper shaft 3 to which the first disk member 16 is fixed. Therefore, the first disk member 16 also has an opposite direction together with the second disk member 17 in a state where the rear surface of the engagement protrusion 162 is in contact with the front surface of the engagement piece 173 of the second disk member 17. However, as described above, the engaging member 212 of the lever 211 of the lock mechanism 20 is engaged with the locking projection 161 of the first disk member 16 as described above.
Since the first disk member 16 is slightly rotated in the opposite direction, the first disk member 16
The engaging surface 161a of the engaging protrusion 161 of the 16 and the engaging member 212 of the lever 211 are engaged, and the first disk member 16 is rotated at its rotational position against the force of the spiral spring 15. The gas inlet 7 is held in the locked state, and the gas inlet 7 is kept open by the valve 6.

On the other hand, the second disk member 17 continues to rotate in the reverse direction by the gear E1 of the drive motor E, and when the second disk member 17 returns to its original state, its limit pressing piece is released.
174 presses the first limit switch 18. Then, a signal is issued from the first limit switch 18 to the drive motor E, the drive motor E stops, the second disk member 17 meshing with the gear E1 of the drive motor E also waits at that position, and waits at the next position. (See FIG. 9).

When the valve 6 opens the gas inlet 7, the upper shaft 3 is connected to the stopper of the cylindrical connecting member 8.
The lower shaft 4 and the multiple male and female screw portions 41a are pressed by the force of the spring 10 pressed against the surface of the gas inlet member 5 and the gas inlet member 8a.
It has been pushed upward through 32a. Therefore, the annular seal member 12a mounted on the upper end of the large diameter portion 31 of the upper shaft 3 has its upper surface pressed against the lower surface of the ring-shaped stopper member 13. Therefore, the lower portion of the upper shaft 3 from the large diameter portion 31 is airtightly shut off by the annular seal member 12a, and the outer peripheral surfaces of the upper and lower shafts 3, 4 and the inner peripheral surfaces of the upper and lower holes 2a, 2b are separated. It completely and reliably prevents the gas that has entered the gap from leaking out of the main body 1 accidentally, and prevents an unexpected situation such as an explosion caused by carelessly leaking gas. ing.
An annular seal member 12b is also mounted on the lower end of the large diameter portion 31 of the upper shaft 3.
The annular seal member 12 attached to the upper end of the large-diameter portion 31
In addition to a, the gas entering the gap between the outer peripheral surfaces of the upper and lower shafts 3 and 4 and the inner peripheral surfaces of the upper and lower holes 2a and 2b is completely and reliably prevented from accidentally leaking out of the main body 1. The annular seal members 12 attached to the upper and lower ends of the upper shafts 3 and 4 are provided.
Reference numerals a and 12b are formed of a material having excellent lubricity, such as polytetrafluoroethylene, and reduce the rotational friction of the upper shaft 3 to make the rotation of the upper shaft 3 smooth.

Further, the outer peripheral surface of the upper end of the lower shaft 4 is pressed against the inner peripheral surface of the lower hole 2b of the vertical shaft hole 2 so that the outer peripheral surface of the lower shaft 4 and the inner surface of the vertical shaft hole 2 are formed. Since the O-ring 41b that fills the gap with the peripheral surface is fixed, the O-ring 41b enters the gap between the outer peripheral surface of the lower shaft 4 and the inner peripheral surface of the lower hole 2b together with the annular seal members 12a and 12b. Gas is more completely and reliably prevented from accidentally leaking out of the main body 1.

Next, when the vehicle stops running and the power is turned off, the gear E1 of the drive motor E rotates, and the second disk member 17 meshing with the gear E1 is moved clockwise in FIG. To rotate. After the second disk member 17 rotates by a predetermined angle, the limit pressing piece 174 of the second disk member 17
Presses the second limit switch 19. In this state, the engagement piece 173 of the second disk member 17 has reached the position waiting on the rear side of the engagement protrusion 162 of the first disk member 16.

Then, as described above, when the limit pressing piece 174 of the second disk member 17 presses the second limit switch 19, a signal is issued from the second limit switch 19 to the lock mechanism 20, and the lock mechanism 20 is turned on. 20 solenoid 22 is de-energized and the operating rod 221 is
The head 221b is retracted by the elastic pressing force of
Then, the lever 211 is disengaged from the locking projection 161 of the first disk member 16 by displacing the lever 211 toward the inner surface side of the box body 14 by the force of the spring 213.
Rotate in the direction to separate (see FIG. 10).

Then, the locking projection 16 of the first disk member 16
1 is disengaged from the engagement member 212 of the lever 211, and the first disk member 16 is moved by the force of the spiral spring 15 of the upper shaft 3 to which the first disk member 16 is fixed. At 10, it is slightly rotated in the counterclockwise direction,
Is locked to the front surface of the engaging piece 173 of the second disk member 17. At this time, the spiral spring 15 of the upper shaft 3
Is smaller than the rotating power of the gear E1 by the drive motor E, the first disk member 16 resists the second disk member 17 against the force of the drive motor E. It does not rotate.

The limit pressing piece 174 of the second disk member 17
Is pressed by the second limit switch 19, a signal is also sent from the second limit switch 19 to the drive motor E, and the drive motor E reverses the rotating direction of the gear E1. Then, with the reversal of the rotation direction of the gear E1, the second disk member 17 meshing with the gear E1 also reverses the rotation direction.

The first disk member 16 holds the engagement disc 162 with the rear surface thereof engaged with the front surface of the engagement piece 173 of the second disk member 17 while holding the second disc member 16. It rotates integrally with 17.

Then, the second disk member 17 is in the original state,
That is, when returning to the solid line portion in FIG. 11, the limit pressing piece 174 presses the first limit switch 18.
Then, a signal is issued from the first limit switch 18 to the drive motor E, the drive motor E stops, and the second disk member 17 meshing with the gear E1 of the drive motor E also stands by at that position, The first disk member 16 is also in standby at that position, that is, in a state where it has returned to its original state, with the rear surface of the engagement protrusion 162 abutting against the front surface of the engagement member 173 of the second disk member 17. Prepare for the next valve opening operation. (See FIG. 11).

As described above, when the first disk member 16 returns to the original state, the state in which the engagement projection 162 is engaged with the engagement piece 173 of the second disk member 17 is maintained. And
The rapid rotation and return of the first disk member 16 by the spiral spring 15 of the upper shaft 3 are regulated by the drive motor E rotating the second disk member 17, and the first disk member 16 Reference numeral 16 performs gentle rotation and return by the drive motor E against the sudden return force of the spiral spring 15. Therefore,
The upper shaft 3 integrated with the first disk member 16 rotates with the rotation of the first disk member 16 to the original state and the return,
The rotation of the upper shaft 3 causes the lower shaft 4 to move upward through the multi-threaded male and female screw portions 41a and 32a which are screwed together, and the valve body 6 moves its upper hemispherical surface to the valve of the gas inlet member 5. The gas inflow port 7 is closed by metal touching the seat 5c. However, as described above, the first disk member 16 is slowly rotated and returned by the drive motor E. Is also gently pressed against the valve seat 5c, and the columnar connecting member 8, the valve body 6, the valve seat 5c and the like are damaged by an inadvertent impact, or the vibration is generated. There is no unforeseen situation, such as transmission to other machines installed in the yard and adversely affecting the other machines.

In the valve-open state, when an emergency such as a vehicle accident occurs, or when the gas pressure detecting device C12 interposed in the gas outflow pipe C1 is connected to the gas outflow pipe C1. If it detects a sudden drop in gas pressure,
That is, if the gas outlet pipe C1 or the gas supply pipe G is damaged and gas leaks from inside these pipes C1 or G or gas leaks from the engine I, the lock mechanism 20 is immediately turned off. The solenoid 22 is de-energized, the operating rod 221 is retracted by the elastic pressing force of the spring 222, the head 221b is removed from the lever 211, and the
1 is moved toward the inner surface of the box body 14 by the force of the spring 213, that is, the engaging member 212 of the lever 211 is
It is rotated in the direction of detaching and separating from the 16 locking projections 161.

In this way, the engagement between the locking projection 161 of the first disk member 16 and the engaging member 212 of the lever 211 is released, and the first disk member 16 is Member 16
9 rotates counterclockwise in FIG. 9 by the force of the spiral spring 15 of the upper shaft 3 to which it is fixed, and returns to the original state shown in FIG.

At this time, even if the first disk member 16 rotates counterclockwise integrally with the upper shaft 3, the engaging piece 173 of the second disk member 17 is moved to the first disk member 16 as described above. Since it is made to stand by at a position distant from the engaging projection 162, its rotating power is not transmitted to the first disk member 16 at all, and therefore, the load on the drive motor E that rotates the second disk member 17 is reduced. The first disk member 16 is instantaneously rotated counterclockwise integrally with the upper shaft 3 by the force of the spiral spring 15 to move the lower shaft 4 upward by the force of the spiral spring 15 without being affected by the restoring force of the spring 10. The valve body 6 is lifted up through the cylindrical connecting member 8 and the upper hemisphere of the valve body 6 is pressed against the valve seat 5c of the gas inlet member 5 to completely close the gas inlet 7. The upper end of the cylindrical connecting member 8 can be relatively displaced in the horizontal direction with respect to the through hole 43a of the suspension member 43. Therefore, the female screw portion 32a of the upper shaft 3 and the male screw portion of the lower shaft 4 are provided. Even if a distortion occurs in the screw connection between the cylindrical coupling member 41a and the cylindrical coupling member 8, the distortion deformation is absorbed by the gap between the through-hole 43a and the cylindrical coupling member 8, and is transmitted to the cylindrical coupling member 8 side. Is prevented, the pressure of the valve body 6 to the lower end opening of the gas inlet 7 by the spring 10 is made uniform, and the closing of the gas inlet 7 is completed.

As described above, this valve closing operation is performed instantaneously without applying any load to the motor as soon as the energization of the solenoid 22 is turned off. In addition, the valve can be quickly closed. Further, when the vehicle burns up due to an accident, the heat melts the fusible alloy 29a embedded in the upper part of the main body 1 and the gas container main body A1 directly communicates with the outside air through the gas release port 29. The gas in the gas container main body A1 and the gas in the gas container V are quickly discharged to the outside through the gas release port 29.

In addition, due to an accident when the vehicle is running, for example,
Even when the valve body 1 portion projecting from the gas container body A1 to the outside is scattered and disappears while the valve body 6 keeps the gas inlet 7 open, the gas supply valve for a gas-powered vehicle of the present invention can be used. According to this, the gas does not leak from the gas container A carelessly. That is, as described above, the spring 10 is press-fitted below the lower shaft 4, and the upper and lower shafts 3, 4 are constantly urged upward. In addition, since the portion of the main body 1 protruding outside the gas container has disappeared, the ring-shaped stopper member 13 mounted in the upper hole 2a has also disappeared. Numerals 4 are displaceable upward. Therefore, the upper and lower shafts 3 and 4 are displaced upward by the force of the spring 10 press-fitted below the lower shaft 4, and the valve body 6 connected to the lower shaft 4 via the columnar connecting member 8 is also pushed upward. Then, the upper hemisphere is pressed against the valve seat 5c of the gas inlet member, and the gas inlet 5 is securely closed.
The gas in the gas container A does not leak to the outside carelessly. Moreover, an O-ring is provided on the outer peripheral surface of the upper end of the lower shaft 4.
41b is fixed, and the gap between the outer peripheral surface of the lower shaft 4 and the inner peripheral surface of the lower hole 2b of the vertical shaft hole 2 facing the lower shaft 4 is filled with the O-ring 41b. The gas remaining in the inflow space 9 does not leak to the outside carelessly.

Further, even if the upper part of the first disk member 16 disappears from the first disk member 16 with the valve body 6 opening the gas inlet 7 due to an accident during running of the vehicle, for example,
According to the gas container A for a gas powered vehicle of the present invention, gas does not leak from the gas container A carelessly. That is, as described above, the spiral spring 15 is integrally provided at the upper end of the upper shaft 3, and the upper shaft 3 is constantly urged in the direction of closing the gas inlet 7 by the valve body 6. Therefore, when the upper part disappears from the first disk member 16, the upper shaft 3 immediately rotates in a direction to close the gas inlet 7 by the valve body 6, and the valve body 6 As a result, the gas inlet 7 is securely closed, and the gas in the gas container A does not leak to the outside carelessly. Moreover, the upper shaft 3
The threaded portion of the upper shaft 3 and the lower shaft 4 is composed of a multi-threaded screw which is easy to loosen, so that the lower shaft 4 is pressed upward by the gas pressure in the container A to thereby move the upper shaft 3 to the valve body 6. Pivots in a direction to close the gas inlet 7 by
The spiral spring 15 assists the rotation of the upper shaft 3 by the spiral spring 15 to make the rotation of the upper shaft 3 smoother and more reliable. It can be closed quickly and securely.

Looking at the fuel meter provided in the driver's seat, the gas pressure detected by the gas pressure detecting device F1 has decreased, that is, the gas container body A1 of the gas container A for a gas-powered vehicle. When the pressure gas inside the gas container V decreases, the gas filling valve F2, which is normally closed, is released, and the pressure gas is fed from the gas supply port S of the vehicle. Then, the gas container V is compressed and filled into the gas container V through the gas filling pipe F, and the pressure gas is pumped into the gas filling port 23, and the check valve 24 is opened by the pressure of the pressure gas. Then, the pressurized gas is compressed and filled into the gas container body A1 through the filling passage 25. Thereafter, the gas-filled pipe F
The inside gas filling valve F2 is closed.

[0069]

The gas container for a gas-powered vehicle according to the present invention has a gas supply valve for a gas-powered vehicle attached to an edge portion of the gas container body, and a pressure reducing valve outside the gas container body. The gas supply valve and the pressure reducing valve are provided integrally with the container body, and are connected and communicated with each other by a gas flow pipe provided in the gas container body, and open the gas supply valve. Thereby, the gas pressurized in the gas container body is supplied to the pressure reducing valve through the gas flow pipe, and the gas depressurized by the pressure reducing valve can be supplied to the engine of the vehicle connected outside the gas container body. Since the pressure is low, the pressure of the gas flowing out of the gas-powered vehicle gas container is low, and the gas-powered vehicle gas container and the engine are connected and communicated with each other as a gas supply pipe. A normal pressure-resistant pipe for low pressure can be used without using a special pressure-resistant pipe for high-pressure gas, and as a connection structure between the gas container for a gas powered vehicle or the engine and the gas supply pipe. Therefore, a normal connection structure for low pressure can be used without using a special connection structure for high-pressure gas, so that the operation of connecting the gas container for a gas-powered vehicle to a vehicle engine is extremely simple and smooth. Can be done.

Further, since a low-pressure gas flows in the gas supply pipe connected to the gas-powered vehicle gas container, a connection portion between the gas-powered vehicle gas container and the gas supply pipe, The stress applied to the gas supply pipe is small,
Therefore, in combination with the vibration generated during running of the vehicle, an unexpected situation in which the connection portion between the gas container for a gas powered vehicle and the gas supply pipe or the gas supply pipe is damaged and gas leaks out does not occur.

Since the gas flow pipe is disposed inside the gas container body, the internal and external pressures of the gas flow pipe are always the same, and the gas connecting the conventional gas container and the pressure reducing valve. A high pressure load is not applied by receiving a high pressure by the high-pressure gas which is placed under the atmospheric pressure and flows through the inside like a flow pipe, and furthermore, the gas flow pipe does not come out of the gas container body. Without being exposed to
That is, it is directly connected to and communicates with the pressure reducing valve without being placed under atmospheric pressure. Therefore, the performance of the gas flow pipe can be stably maintained over a long period of time, and the pressure gas in the gas container body can be stably and reliably supplied to the pressure reducing valve.

Further, since the gas flow pipe is disposed in the gas container main body and is protected by the gas container main body, the gas flow pipe is damaged by a vehicle accident or the like, and the inside of the gas flow pipe is damaged. There is no unforeseen situation, such as gas leaking outside of the system.

A gas container for a gas powered vehicle according to a second aspect is the gas container for a gas powered vehicle according to the first aspect, wherein gas in another gas container is supplied into the gas container body through a gas supply valve. Because it is characterized by having such a configuration, a large amount of pressure gas can be mounted on the vehicle,
Therefore, the traveling distance of the vehicle can be significantly increased.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing a part of a usage state of a gas container for a gas powered vehicle.

FIG. 2 is a vertical sectional view taken along line X ₃ -X ₃ in FIG.

FIG. 3 is a cross-sectional view taken along line X ₁ -X ₁ in FIG. 2;

FIG. 4 is a cross-sectional view taken along line X ₂ -X ₂ in FIG.

FIG. 5 is a simplified plan view in which a part of a rotation mechanism of an upper shaft is sectioned;

6 is a X ₄ -X _4-wire longitudinal sectional view in FIG.

FIG. 7 is a schematic connection diagram showing a usage state of a gas container for a gas powered vehicle.

FIG. 8 is a simplified plan view in which a part of a rotation mechanism of an upper shaft is sectioned.

FIG. 9 is a simplified plan view in which a part of a rotation mechanism of an upper shaft is sectioned.

FIG. 10 is a simplified plan view in which a part of a rotation mechanism of an upper shaft is sectioned.

FIG. 11 is a simplified plan view in which a part of a rotation mechanism of an upper shaft is sectioned.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Valve main body 2 Vertical shaft hole 2a Upper hole 2b Lower hole 2c Lower opening 3 Upper shaft 4 Lower shaft 5 Gas inlet member 6 Valve body 7 Gas inlet 8 Cylindrical connecting member 10 Spring 101 Gas supply passage 11 Intermediate passage 12a , 12b annular seal member 13 ring-shaped stopper member 14 box body 15 spiral spring 16 first disk member 161 locking projection 162 engagement projection 17 second disk member 173 engagement piece 18 first limit switch 19 second limit Switch 20 Lock mechanism 21 Movable lock member 22 Solenoid 211 Lever 212 Engagement member 29 Gas escape port 29a Soluble alloy A Gas container for gas powered vehicle A1 Gas container body B Gas supply valve for gas powered vehicle C Pressure reducing valve C1 Gas outlet pipe D Gas distribution pipe

Claims (2)

[Claims] 1. A gas-powered vehicle gas supply valve is mounted on an edge portion of a gas container main body, and a pressure reducing valve is disposed integrally with the gas container main body outside the gas container main body. The gas supply valve and the pressure reducing valve are connected and communicated by a gas flow pipe provided in the gas container body, and by opening the gas supply valve,
The gas pressurized in the gas container body is supplied to the pressure reducing valve through the gas flow pipe, and the gas depressurized by the pressure reducing valve can be supplied to an engine of a vehicle connected outside the gas container body. A gas container for a gas powered vehicle. 2. The gas container for a gas-powered vehicle according to claim 1, wherein the gas in another gas container is supplied into the gas container body through a gas supply valve.