JP3308903B2 - Connecting device for fuel pipe and return pipe of fuel tank of automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for connecting a fuel pipe and a return pipe of an automobile fuel tank,
In a pipe mounting sheet provided for connecting a fuel pipe and a return pipe to a fuel tank, a connecting plate combined with the pipe mounting sheet can be replaced with a connecting plate having a connecting socket of a different standard. This allows the combination of different fuel gauge wire plugs depending on the vehicle type, eliminating the need to replace the entire pipe mounting sheet due to differences in fuel gauge wire plugs between different vehicle types, saving manufacturing costs and pipe mounting. The fuel pipe can be quickly connected to the seat in a plug-in manner, and a copper piece having a leaktight packing is provided in the hole of the exhaust valve body combined with the pipe mounting sheet, so that the fuel cell can be quickly assembled and airtight. A kind of automobile fuel tank that can be high and further reduce the reject rate significantly Fee pipe and on the return pipe connection apparatus.

[0002]

2. Description of the Related Art FIG. 11 shows a conventional fuel pipe and return pipe connecting device for a fuel tank of an automobile, which has a drawback that only a wire plug of a fuel gauge of the same standard can be mounted on a pipe mounting sheet 1. Was.

In the connecting device, after one packing 51 is combined with the double-headed connector 5 having male threads cut at both ends, the double-headed connector 5 is screwed into the pipe connecting hole 14 of the pipe mounting sheet 1. Further, the connecting head 61 at the front end of the fuel pipe 6 and the double-headed connector 5 are connected using a tool, and the connection between the fuel pipe 6 and the pipe mounting sheet 1 is completed. However, pipe installation sheet 1
When there are a plurality of fuel pipes 6 attached to the
It takes time and effort to connect all the fuel pipes 6, and when screwing the double-headed connector 5, the packing 5
1 could also be rotated and damaged, causing an oil leakage phenomenon, resulting in an error or danger in fuel amount detection.

FIG. 12 shows a structure of a well-known exhaust valve provided on the above-mentioned well-known pipe mounting sheet 1. Among them,
The exhaust valve 8 is formed by plastic injection molding and has two holes 8.
Springs 821 and 831 are provided in the insides 2 and 83, respectively, to push up the valves 822 and 832 to close the holes at a normal pressure state. However, the exhaust valve 8 formed by plastic injection molding has a flat contact surface with the valves 822 and 832, and therefore, the copper piece 84 having a flat surface in the contact portion.
Is provided to achieve the effect of closely contacting the valves 822 and 832. However, with such a structure, it is difficult to control the dimensional tolerance, and the outer diameter of the copper piece 84 is too large, so that the exhaust
And a large number of defective products were generated because the outer diameter was too small.

FIG. 13 shows a sectional view of a combination of a sealing bolt 9 combined with a float shaft tube combined with the well-known pipe mounting sheet 1. A male screw 91 is cut at the lower stage of the sealing bolt 9 and is combined with the female screw 74 of the float shaft tube 7. The sealing bolt 9
A rubber packing 93 is fitted in the upper annular groove 92 to achieve a leakage preventing effect. However, with such a structure, the sealing bolt 9 is connected to the female screw 74 at the bottom of the float shaft tube 7.
When screwed into the hole having the following, the rubber packing 93 may be damaged by friction with the female screw 74 or the pipe wall,
This sometimes affected the sealing effect.

[0006]

The present invention can be applied to various automobiles simply by changing the connecting plate of the pipe mounting sheet, and can easily assemble a fuel pipe or a gas pipe. It is an object of the present invention to provide a kind of connecting device for a fuel pipe and a return pipe of a fuel tank of an automobile, which can reduce the reject rate by increasing the rejection rate.

[0007]

According to the first aspect of the present invention, there is provided a pipe mounting sheet 1 and a connecting recess 11, a cover plate 12, a retaining edge 13, a connecting plate 2 provided on the pipe mounting sheet 1. In a fuel pipe and return pipe connecting device for a fuel tank of a vehicle including at least a tightening bolt, a washer, a seal ring, a clamping washer, an exhaust valve, and the like, the pipe mounting sheet 1 is mounted on an upper end of a fuel tank of the vehicle. One connecting recess 11 is provided on the upper surface of the pipe mounting sheet 1, and the connecting recess 11 is provided.
Is closed by a removable lid plate 12, an outward opening is provided on one side of the connecting recess 11, and a stopper edge 13 is provided on both sides of the opening to protrude oppositely, A pipe connecting hole for connecting a plurality of fuel pipes or return pipes is provided on the front surface of the pipe mounting sheet 1, and the connecting plate 2 has an appropriate thickness and a connecting plate main body having a connecting hole 211 at the center of the plate body. 21 and a connecting socket 23 combined with the connecting plate main body 21 are connected to each other. Fitting grooves 22 are provided on both sides of the connecting plate main body 21, and the fitting grooves 22 are connected from top to bottom. 11 are fitted to the retaining edges 13 on both sides of the opening, and further the lid plate 12 is combined to fix the connecting plate 2 beside the connecting recess 11, and to connect with the connecting socket 23 and the electric circuit of the pipe mounting sheet 1. And separately, Catcher over the positioning member 142 are combined in pipe attachment sheet 1 of the pipe connecting the hole, each pair of washers positioning member 142, a groove on the outer periphery 142
2 and an inner washer positioning member 1424 provided with an annular groove 1425 on the inner periphery of a connection end between the outer washer positioning member 1421 and the outer washer positioning member 1421.
The outer washer positioning member 142
The outer washer 1426 is inserted into the groove 1422, the inner washer 1427 is fitted into the annular groove 1425 of the inner washer positioning member 1424, and the convex connecting edge 1 provided at one end of the outer washer positioning member 1421 is provided.
423 is the annular groove 1 of the inner washer positioning member 1424
425, the outer washer locating member 1421 and the inner washer locating member 1424 are combined, and the outer washer 1426 and the inner washer 1427 combined with the washer locating member 142 cause the pipe connection hole after the fuel pipe or the return pipe to be inserted. A seal effect between the hole wall of the fuel pipe and the outer pipe wall of the fuel pipe or the return pipe is obtained, and the inner washer positioning member 1424 of the washer positioning member 142 is provided.
A clamping washer 1428 provided with a plurality of inclined claws 14281 is provided in the concave edge at the end of the fuel pipe or return pipe. After the fuel pipe or the return pipe is inserted, the fuel pipe or the return pipe is clamped by the claws 14281 of the clamping washer 1428. The tightening bolt is provided with a loose preventing ridge 1412 at a position corresponding to the loose preventing groove 1413 provided in the pipe connecting hole of the pipe mounting sheet 1 and has a male screw on the outer periphery. The metal pipe 1481 is separately screwed into the pipe connection hole of the pipe mounting sheet 1 and has an outer diameter slightly smaller than the inner diameter of the fuel pipe or the return pipe. Is the aforementioned washer positioning member 14
After being passed through the inner hole of the tightening bolt 2 and being bonded and positioned, the upper end of the exhaust valve is combined with the through hole of the pipe mounting sheet 1 and accommodates the two copper pieces 44 and the springs 421 and 431. A copper piece 44 is provided in each of the holes 42 and 43. The copper piece 44 has an annular groove around it and is combined with a seal ring 441.
The valves 422 and 432 biased by the springs 421 and 431 are completely in close contact with the copper piece 44, and the sealing effect of the sealing ring 441 is obtained. Including the float shaft tube 7
The sealing bolt 73 includes a bolt sheet 731, a sealing bolt body 732, and a rubber packing 7323.
A male screw is provided on the outer periphery of the bolt shaft 7 and is combined with the bottom end of the float shaft tube 7 connected to the bottom of the pipe mounting sheet 1 with the male screw, and a female screw is formed in the inner hole of the bolt sheet 731 in a direction opposite to the male screw. The sealing bolt main body 732 provided with a male screw on the outer circumference is screwed into the female screw in the opposite direction, and the rubber packing 7323 is fitted below the convex edge at the upper end of the sealing bolt main body 732, After the bolt sheet 731 is fixed to the bottom end of the float shaft tube 7, the sealing bolt body 732 is rotated in a direction opposite to the screwing direction of the bolt sheet 731 by a screwdriver, so that the rubber packing 7323 is pressed and the outer periphery is expanded. To prevent the fuel oil from entering the float shaft pipe 7, and the connecting plate 2 of the pipe mounting sheet 1 is selected and replaced according to the type of vehicle, so that the fuel gauge The line plug 3 pipe attached sheet 1
A fuel pipe and return pipe connecting device for a fuel tank of an automobile, which is adapted to be applied to different types of fuel tanks of an automobile.

According to a second aspect of the present invention, a pipe mounting sheet 1 is provided.
Another set of washer positioning members 142 composed of an outer washer positioning member 1421 and an inner washer positioning member 1424 is also provided in another pipe connecting hole 144 of FIG.
And the outer washer positioning member 1
421 and inner washer positioning member 142
4 and the outer washer 14
26 and an inner washer 1427 are combined so as to achieve a sealing effect after the fuel pipe or the return pipe is inserted.
A fastening washer 1 is screwed into a fastening bolt 145 having an inner hole 1451 at the bottom end of the fastening bolt 145.
An annular member 146 having an outer peripheral surface 462 is combined with a hook 1461 provided on an outer periphery of a bottom end of the annular member 146, and the annular groove 1452 is locked by the hook 1461 after being placed in an inner hole 1451 of a tightening bolt 145. So that the top pressure member 1 does not fall inside the annular member 146.
47, when the top pressure member 147 is pressed, the inclined end surface 1472 at the bottom end of the top pressure member 147 pushes the plurality of inclined claw pieces 14621 of the sandwiching washer 1462 to open, and the fuel pipe or return sandwiched thereby. The pipe can be opened, and inside this device,
Also, one metal tube 1481 is provided, the front end of which is joined to the inner hole 14241 of the inner washer positioning member 1424 to prevent deformation of the fuel pipe or return pipe, and one stopper is provided at the upper end of the tightening bolt 145. A pressure block 1453 is provided, and one notch 1471 is provided on the convex edge of the top pressure member 147. In a normal state, the pressure stop block 1453 presses the bottom end of the top pressure member 147 to press the fuel pipe or The return pipe is prevented from falling off, and when removing the fuel pipe or the return pipe, the top pressure member 147 is rotated to cut out the notch 147.
2. A fuel pipe and a return of a fuel tank of an automobile according to claim 1, wherein when the pressure pipe 1 is adjusted to the position of the stop block 1453, the fuel pipe or the return pipe can be removed by pushing the top pressure member 147. It is a pipe connection device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1, 2 and 3, a connecting device for a fuel tank and a return pipe of a fuel tank of an automobile according to the present invention is connected to a fuel pipe and a return pipe of a fuel tank of a known automobile. It is designed to remedy the problem that only the fuel gauge wire plug of the same standard was installed on the pipe mounting sheet 1 of the apparatus. In the present invention, one connecting recess 11 is provided on the upper surface of the pipe mounting sheet 1, the upper end of the connecting recess 11 is closed by one cover plate 12, and one side of the connecting recess 11 is provided. Is provided with an outwardly directed opening, and on both sides of the opening, oppositely protruding locking edges 13 are provided, thus the connecting recess 1 is provided.
One type of connecting plate 2 can be combined inside one stop edge 13, and the connecting plate 2 has an appropriate thickness and a connecting plate main body 21 having a connecting hole 211 in the center of the plate body.
And the connecting socket 2 combined with the connecting plate body 21
3 on each side of the connecting plate body 21
2, the connecting socket 23 is combined with the connecting plate body 21 from behind so as to protrude forward from the connecting hole 211, and the electric wire plug 3 of the fuel gauge is connected to the connecting socket 23. The plate 2 is assembled to the pipe mounting sheet by fitting the fitting grooves 22 on both sides of the connecting plate main body 21 from above to the stopping edges 13 on both sides of the opening of the connecting recess 11. The connecting recess 11 is combined with the connecting plate 2 so as to cover the upper side thereof, and the positioning column 15 provided at the cover plate mounting portion on the upper surface of the pipe mounting sheet 1 is inserted into the hole 121 of the cover plate 12 so that the connecting plate 2 is The electric wire of the fuel gauge and the electric circuit provided on the pipe mounting sheet 1 are connected to each other by the connection between the electric wire plug 3 of the fuel gauge and the connection socket 23 without fail.

As a result, the electric wire plug 3 of the fuel gauge is directly connected to the connecting socket 23 projecting outward from the connecting plate 2, and the fuel tank of the fuel tank obtained by measurement with the fuel pipe and the return pipe of the fuel tank of the automobile is connected. The fuel amount is converted into an electronic signal and sent by an electric wire from the electric circuit in the pipe mounting sheet 1 to the fuel gauge, and the fuel gauge indicates the fuel quantity in the fuel tank. There are many automobile manufacturers and vehicle types, and the wire plugs of the fuel gauge that they use are not of the same standard. However, according to the device of the present invention, the connecting plate 2 is replaced with a wire according to the size of the wire plug. Thus, the pipe mounting sheet can be connected to the electric wire plug of the fuel gauge, and thereby the electric circuit in the pipe mounting sheet and the fuel gauge can be electrically connected. FIG. 4 shows a connecting socket of another standard according to the invention and a connecting plate associated therewith. The fuel pipe and return pipe connecting device of the fuel tank of the vehicle according to the present invention can be combined with the fuel tanks of all vehicles simply by replacing the connecting plate 2 with one having a different standard.

Further, in the present invention, the pipe mounting sheet 1
In one embodiment of the apparatus for connecting a fuel pipe to a pipe, a tightening bolt 141 having a through hole 1411 in the center is screwed into a screw portion of the pipe mounting sheet 1 at a stage preceding the pipe connecting hole 14, and the pipe is connected to a rear part of the pipe connecting hole 14. In addition, three washers and two seal rings are provided at intervals, and a clamping washer having a plurality of inclined claw pieces is provided between the two washers, and a through hole 1411 is provided.
After the fuel pipe 148 is inserted into the
1 is screwed into the threaded portion of the pipe connection hole 14 so that the plurality of washers press the plurality of seal rings to change the inner diameter and the outer diameter thereof, and the fuel pipe 148 inserted into the through hole is connected with the above-described fuel pipe 148. The clamping washer is clamped between the inclined nail pieces, whereby the fuel pipe 148 is quickly positioned on the pipe mounting sheet 1 to prevent the fuel pipe 148 from falling off and to achieve a sealing effect by the seal ring.

As shown in FIGS. 5A and 5B, according to the present invention, a tightening bolt 1 having a through hole 1411 at the center thereof is provided in a threaded portion of a pipe mounting sheet 1 at a stage preceding a pipe connecting hole 14.
41 is screwed in, and a washer positioning member 142 for positioning the inner washer 1426 and the outer washer 1427 is provided at a stage subsequent to each pipe connecting hole 14, and the washer positioning member 142 has an outer circumferential groove 1422. An annular groove 14 is formed in the inner periphery of a connection end between the outer washer positioning member 1421 and the outer washer positioning member 1421.
25, an outer washer 1426 is provided in a groove 1422 of the outer washer positioning member 1421, an inner washer 1427 is fitted in an annular groove 1425 of the inner washer positioning member 1424, and A convex connecting edge 1423 provided at one end of the outer washer positioning member 1421
Is the annular groove 1425 of the inner washer positioning member 1424
And the outer washer positioning member 142
1 and the inner washer positioning member 1424 are combined, and the outer washer 1426 and the inner washer 1427 combined with the washer positioning member 142 cause the hole wall of the pipe connecting hole 14 after the fuel pipe 148 is inserted and the outer pipe wall of the fuel pipe 148 to be connected. A pinching washer 1428 having a plurality of inclined claw pieces 14281 in a concave edge at the end of the inner washer positioning member 1424 of the washer positioning member 142 so as to obtain a sealing effect therebetween.
Is provided. After the fuel pipe 148 is inserted, the fuel pipe 148 is pinched by the claws 14281 of the pinching washer 1428 to prevent the fuel pipe 148 from falling off, and one metal pipe 1481 inserted into the fuel pipe 148 is provided. Metal tube 14
The front end of 81 is joined to the inner hole 14241 in front of the inner washer positioning member 1424 located at the most front end so as to prevent the deformation of the fuel pipe 148, and a plurality of slacks around the pipe connection hole 14. Prevention groove 1
413 is formed, and a locking ridge 1412 is provided on the tightening bolt 141 at a position corresponding to the locking groove 143. After the locking bolt 141 is screwed into the pipe connection hole 14, the locking groove 1413 is formed.
The loose fitting can be prevented by fitting each other with the loose preventing protrusions 1412.

Still referring to FIGS. 6A and 6B.
Another pipe connecting hole 14 of the pipe mounting sheet 1 of the present invention
4, another set composed of an outer washer positioning member 1421 and an inner washer positioning member 1424,
The washer positioning member 142 is combined with the outer washer 1426 and the inner washer 14 in the groove 1422 of the outer washer positioning member 1421 and the annular groove 1425 of the inner washer positioning member 1424, respectively.
27 are combined to achieve a sealing effect after the fuel pipe 148 is inserted.
A fastening bolt 145 having an inner hole 1451 is screwed into the front end, and an annular member 146 having a washer 1462 at the bottom end is combined with the inner hole 1451 of the fastening bolt 145. Hook 146
1 is provided, and after being placed in the inner hole 1451 of the tightening bolt 145, the annular groove 1452 is formed by the hook 1461.
To prevent the annular member 14 from falling off.
6, a top pressure member 147 is provided, and when the top pressure member 147 is pressed, an inclined end surface 1472 of the bottom end of the top pressure member 147 is provided.
Are a plurality of inclined claw pieces 146 of the clamping washer 1462
21 to open it and open the fuel pipe 1
In this apparatus, another metal pipe 1481 is provided, and the front end thereof is joined to the inner hole 14241 of the inner washer positioning member 1424 to prevent the fuel pipe 148 from being deformed. In addition, one stop block 1453 is provided at the upper end of the tightening bolt 145, and one notch 1471 is provided at the convex edge of the top pressure member 147. The bottom end of the pressure member 147 is pressed to prevent the fuel pipe 148 from dropping due to the pressure. When the fuel pipe 148 is removed, the top pressure member 147 is rotated and the notch 1471 is moved to the position of the stop block 1453. , The top pressure member 147 is pushed and the fuel pipe 14
8 can be removed.

Further, as shown in FIGS. 7 and 8,
A copper piece 4 having an annular groove around each of the holes 42 and 43 of the exhaust valve 4 combined with the pipe mounting sheet 1 of the present invention and having a seal ring 441 combined with the annular groove.
The copper piece 44 is provided in the holes 42 and 43 of the exhaust valve 4.
Are combined so that the valves 422 and 432 biased by the springs 421 and 431 are completely adhered to the copper piece 44, and the sealing effect of the seal ring 441 is obtained.

Further, as shown in FIGS. 3, 9 and 10, in the present invention, the fuel oil enters the float shaft pipe 7 of the float 71 combined with the pipe mounting sheet 1 and the internal detecting device is damaged. One sealing bolt 73 is connected to the female screw 74 in the hole at the bottom end of the float shaft tube 7 in order to prevent the sealing bolt 73 from being bolted. 7
323, the bolt sheet 731 is combined with the bottom end of the float shaft tube 7 by a male screw 7311 provided on the outer periphery, and an internal thread 7312 in the opposite direction is provided in the inner hole of the bolt sheet 731. Male screw 7 on female screw 7312
A sealing bolt body 732 having an outer periphery provided with a rubber packing 7323 is provided below a flange 7322 provided at an upper end of the sealing bolt body 732.
Are fitted and the bolt sheet 731 is joined to the bottom end of the float shaft tube 7, and then the sealing bolt body 7 is further tightened with a screwdriver.
32 is turned in the opposite direction, so that the sealing bolt body 73
2 presses the rubber packing 7323 and presses the rubber packing 73.
23 to effectively expand the float shaft pipe 7 for fuel oil.
It is designed to prevent entry into the area. In addition, one filter net 72 is provided on the front side of the float shaft tube 7 so as to achieve the purpose of filtration.

[0016]

In summary, the fuel pipe and return pipe connecting device for a fuel tank of a vehicle according to the present invention can be applied to various types of vehicles by simply changing the connecting plate of a pipe mounting sheet, and can be applied to a fuel pipe or a gas pipe. Can be easily assembled, and the airtightness of the exhaust valve can be increased to reduce the reject rate. Therefore, it can be said that the invention has excellent practicality, novelty, and industrial value.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is a structural view of the present invention in plan view.

FIG. 3 is a perspective view of an embodiment of the present invention in which a pipe mounting sheet, a fuel pipe of a fuel tank, and a return pipe are connected.

FIG. 4 is an exploded perspective view of an embodiment using different types of connecting plates of the present invention.

FIG. 5 is a view showing a structure of connecting a fuel pipe to a pipe connecting hole 14 in the present invention.

FIG. 6 is a view showing a fuel pipe connection structure to another pipe connection hole 144 in the present invention.

FIG. 7 is a view showing an assembling position of the exhaust valve of the present invention on a pipe mounting sheet.

FIG. 8 is a sectional view of the exhaust valve of the present invention.

FIG. 9 is an exploded perspective view of the sealing bolt at the end of the float shaft tube of the present invention.

FIG. 10 is a sectional view showing a combination of sealing bolts at the end of a float shaft tube according to the present invention.

FIG. 11 is an exploded perspective view of a known fuel pipe connection structure.

FIG. 12 is a cross-sectional view of a known exhaust valve.

FIG. 13 is a cross-sectional view of a combination of known sealing bolts.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pipe attachment sheet 11 Connection recess 12 Cover plate 121 Fixing hole 13 Stopper edge 14, 144 Pipe connection hole 141, 145 Tightening bolt 142 Washer positioning member 1411, 1431 'Through hole 1412 Loose prevention convex ridge 1421 Outer washer positioning member 1422 Groove 1423 Convex connecting edge 1424 Inner washer positioning member 1425 Annular groove 1426 Outer washer 1427 Inner washer 14241, 1451 Inner hole 1428 Nipping washer 14281, 14621 Claw pieces 143, 1413 Anti-loose groove 1452 Annular groove 1453 Stop pressure block 147 Top pressure member 1471 Notch 1472 Inclined end face 148 Fuel pipe 1481 Metal pipe 15 Positioning column 2 Connecting plate 21 Connecting plate body 211 Connecting hole 22 Fitting groove 23 Connecting socket Fuel gauge plug 4, 8 Exhaust valve 42, 43, 82, 83 Hole 421, 431, 821, 831 Spring 422, 432, 822, 832 Valve 44, 84 Copper piece 5 Double-ended connector 6 Fuel pipe 61 Connecting head 7 Float Shaft tube 71 Float 72 Filter net 73, 9 Sealing bolt 731 Bolt sheet 7321, 7311, 91 Male screw 732 Sealing bolt body 7322 Convex edge 74, 7312 Female screw 7323, 93 Rubber packing 92 Ring groove

Claims (2)

(57) [Claims] 1. A pipe mounting sheet 1, a connecting recess 11, a cover plate 12, and a connecting recess 11 provided on the pipe mounting sheet 1.
In the fuel pipe and return pipe connecting device of the fuel tank of the vehicle, which is provided with at least the retaining edge 13, the connecting plate 2, the tightening bolt, the washer, the seal ring, the clamping washer, the exhaust valve, and the like, It is attached to the upper end of the fuel tank, one connecting recess 11 is provided on the upper surface of the pipe mounting sheet 1, and the upper end of the connecting recess 11 is closed by one removable lid plate 12, and the connecting recess is closed. One side of the recess 11 is provided with an outward opening, and opposite sides of the opening are provided with oppositely protruding stopper edges 13. A plurality of fuel pipes or return pipes are connected to the front surface of the pipe mounting sheet 1. The connecting plate 2 has an appropriate thickness and has a connecting hole 2 at the center of the plate body.
The connecting plate main body 21 having the connecting plate 11 and the connecting socket 23 combined with the connecting plate main body 21 are connected to each other, and fitting grooves 22 are provided on both sides of the connecting plate main body 21, respectively. The connecting plate 2 is fixed below the connecting recess 11 by fitting the cover plate 12 together with the retaining edges 13 on both sides of the opening of the connecting recess 11, and the connecting socket 23 and the pipe mounting sheet. And a separate washer positioning member 142 is assembled into the pipe connection hole of the pipe mounting sheet 1, and each set of washer positioning members 142 has an outer washer positioning member 1421 having a groove 1422 on the outer periphery. And an annular groove 14 on the inner periphery of the connection end with the outer washer positioning member 1421.
25, the outer washer 1426 is provided in the groove 1422 of the outer washer positioning member 1421, the inner washer 1427 is fitted in the annular groove 1425 of the inner washer positioning member 1424, and A convex connecting edge 1423 provided at one end of the outer washer positioning member 1421
Is the annular groove 1425 of the inner washer positioning member 1424
And the outer washer positioning member 142
1 and the inner washer positioning member 1424 are combined, and the outer washer 1426 and the inner washer 1427 combined with the washer positioning member 142 are used to connect the hole wall of the pipe connecting hole after the fuel pipe or the return pipe is inserted and the outer pipe of the fuel pipe or the return pipe. A sealing washer 1428 having a plurality of inclined claws 14281 is provided in the concave edge at the end of the inner washer positioning member 1424 of the washer positioning member 142 so as to obtain a sealing effect between the wall and the fuel. After the pipe or the return pipe is inserted, the fuel pipe or the return pipe is held by the claw pieces 14281 of the holding washer 1428 to prevent the fuel pipe or the return pipe from falling off. The tightening bolt is provided in the pipe connection hole of the pipe mounting sheet 1. Groove 141 to prevent loosening 3 has a ridge 1412 for preventing loosening, has a male thread on the outer periphery, is screwed into the pipe connection hole of the pipe mounting sheet 1, and another metal pipe 1481 is provided. Tube 1
481, the outer diameter is slightly smaller than the inner diameter of the fuel pipe or return pipe, and the front end is bonded and positioned after passing through the above-mentioned washer positioning member 142 and the inner hole of the tightening bolt. Are combined with the through holes of the pipe mounting sheet 1, and two copper pieces 44 and springs 421, 4
And holes 43, 43 for accommodating the inner ring 31. Each of the holes 42, 43 has an annular groove around the seal groove 44.
1 are provided, and a copper piece 44 in which
The valves 422 and 432 biased to 431 are completely
And a sealing effect by the seal ring 441 is obtained. Further, a sealing shaft 73 having a float is provided, and a sealing bolt 73 is combined with the float shaft 7 and the sealing bolt 73 is provided. Includes a bolt sheet 731, a sealing bolt body 732, and a rubber packing 7323, a male screw is provided on the outer periphery of the bolt sheet 731, and the float shaft tube 7 connected to the bottom of the pipe mounting sheet 1 with the male screw is used. A female screw is provided in the inner hole of the bolt sheet 731 in a direction opposite to the male screw, and the sealing bolt body 732 provided with a male screw on the outer circumference is screwed into the female screw in the opposite direction. The rubber packing 7323 is fitted below the convex edge at the upper end of the sealing bolt body 732, and the bolt sheet 731 is attached to the bottom end of the float shaft tube 7. Then, the sealing bolt body 732 is rotated by a screwdriver in a direction opposite to the screwing direction of the bolt sheet 731, so that the rubber packing 7323 is pressed and the outer periphery expands to the fuel oil float shaft pipe 7. The connecting plate 2 of the pipe mounting sheet 1 is selected and replaced depending on the type of vehicle, so that the electric wire plug 3 of the fuel gauge can be assembled to the pipe mounting sheet 1, which is different. A fuel pipe and return pipe connection device for a vehicle fuel tank which is applicable to a vehicle fuel tank and has the above configuration. 2. Another pair of washer positioning members 142 composed of an outer washer positioning member 1421 and an inner washer positioning member 1424 are also combined in another pipe connecting hole 144 of the pipe mounting sheet 1,
And the groove 142 of the outer washer positioning member 1421
2 and the annular groove 142 of the inner washer positioning member 1424
An outer washer 1426 and an inner washer 1427 are respectively combined with the five parts so as to achieve a sealing effect after inserting the fuel pipe or the return pipe,
A tightening bolt 145 having an inner hole 1451 is screwed into the front end of the pipe connecting hole 144, and an annular member 146 having a washer 1462 at the bottom end is combined with the inner hole 1451 of the tightening bolt 145. A hook 1461 is provided on the outer periphery of the bottom end, and a fastening bolt 145 is provided.
After being placed in the inner hole 1451 of the
1, the annular groove 1452 is locked so as not to fall off, a top pressure member 147 is provided in the annular member 146,
When the top pressure member 147 is pressed, the inclined end surface 1472 at the bottom end of the top pressure member 147 pushes the plurality of inclined claw pieces 14621 of the sandwiching washer 1462 to open, and the fuel pipe or the return pipe held therebetween is opened. In this device, one metal tube 1
481, the front end of which is joined to the inner hole 14241 of the inner washer positioning member 1424 to prevent the deformation of the fuel pipe or the return pipe, and one stop block 1453 is provided at the upper end of the tightening bolt 145. And one notch 1 on the convex edge of the top pressure member 147.
471 is provided, and in normal times, the stop pressure block 1453 presses the bottom end of the top pressure member 147 to prevent the fuel pipe or the return pipe from dropping due to the pressure. Top pressure member 1
47 and rotate the notch 1471 to stop pressure block 1
The fuel pipe and return pipe connecting device for a fuel tank of an automobile according to claim 1, wherein the fuel pipe or the return pipe can be removed by pushing the top pressure member 147 when the position is adjusted to the position of 453.