JPS5826913Y2 - Airtight tank cap - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an airtight tank cap.

An object of the present invention is to provide a device that can prevent the risk of the cap being blown off due to the internal pressure of the tank when the cap is opened.

Therefore, in the present invention, the spring receiving plate 3 of the coil spring 1 is attached to the main body 2 having the coil spring 1 inside, and the valve body 5 containing the valve 4 is provided on the main body 2, and the spring receiving plate 3 and the spring receiving plate 3 are provided. A spring 8 is applied in the direction in which the valve 5 contacts the valve seat 7, and a cap mounting opening member 10 provided on the tank 9 is fitted onto the spring receiving plate 3 of the main body 2. An inclined cam 13.13 is formed with which the projecting pieces 12, 12 of the locking ring 11 are in contact, and a joining notch 14°14 of the projecting pieces 12, 12 is formed at the starting end of the inclined cam 13.13, and a stopper 15a and the engaging notch are formed at the terminal end of the inclined cam 13.13. A stop portion 15b is provided, and furthermore, a guide Shiba dog 17°17 is formed on the lower edge of the lock ring 11, which is in contact with another projecting piece 16, 16 protruding from the spring receiving plate 3, and at the starting end of the guide Shiba dog 17,17. This is an airtight tank cap characterized by having arcuate engagement recesses 18, 18 recessed therein.

In the figure, 19 is a lower receiving metal fitting for the valve body 5, and 20 is a covering metal fitting, which forms a space a in which the valve 4 is placed. A spring 8 is loaded between the protrusion 23 and the protrusion 23.

Reference numeral 24 denotes a backing which is fitted around the overlapping circumferential edge flange 25 of the valve body 5 and the circumferential edge flange 26 of the covering fitting 20, and the covering fitting 20 has a cap-shaped knob 27 on an inner plate 28 that is integral with the main body 2. The backing 24 is then fixed on the stepped portion 29 of the inner plate 28.

30 is a blank hole provided in the inner plate 28, 31 is a ventilation hole formed in the valve seat 7, 32 is a ventilation hole provided in the lower bracket 19, 3
Reference numeral 3 denotes a backing that contacts the cap attachment opening member 10 and is fitted onto the lower surface of the inner plate 28.

34 indicates a spring receiving plate protruding hole of the main body 2. Since the present invention has the configuration described above, the cap main body 2 is attached to the mounting opening member 1.
0, and after engaging the protruding piece 12 with the reciprocating notch 14, turning the knob 27 clockwise causes the protruding pieces 12, 12 to engage the inclined cam 1.
3.Move in contact with 13 and stopper 15 at its end
H and is locked to the locking stepped portion 15b.

(Fig. 6a, Fig. 7a) When the knob 27 is further turned in the same direction, the projection 16.16 moves into the arc-shaped engagement recess 1 against the spring 1.
8, 18, the protruding piece 16.16 is attached to the guide Shiba Inu 17,
17, and the valve 5 is pulled through the connecting rod 6, so that it contacts the valve seat 7 and closes.

(Fig. 6, Fig. 7b) Next, when removing the main body of the cap, turn the knob 27 in the opposite direction.
6 and 16 move in contact with the guide Shiba dogs 17 and 17 and enter the arcuate engagement recesses 18 and 18, and the spring 1 opens the valve 5, so that the internal pressure is released from the air in the inner plate 28 through the ventilation hole 31 provided inside the valve seat. It is discharged to the outside through the marking hole 30.

Then, by further turning the knob 27, the projecting pieces 12, 12 can be removed from the locking step 15b and removed from the loosening notch 14.14.

As described above, since the cap of the present invention is locked in two stages, there is no risk of the cap being blown off by the internal pressure of the tank when removing it, so it is safe.

[Brief explanation of the drawing]

The drawings show an embodiment of the airtight tank cap according to the present invention. Fig. 1 is an exploded perspective view, Fig. 2 is a vertical front view taken from the tank opening, and Fig. 3 is a view of the tank opening. Fig. 4 is a front view showing the main body of the cap turned halfway, Fig. 5 is a front view showing the main body of the cap turned halfway, and Fig. 5 shows the main body turned further to close the valve and securely attach it to the mouth of the tank. FIG. Further, FIG. 6 is a developed sectional view showing the operating state, and FIG. 7 is a bottom view of the operating state. 1...Coil spring, 2...Main body, 3.
...Spring receiving plate, 4...Valve, 5...
・Valve body, 6... Connecting rod, 7... Valve seat, 8... Spring, 9... Tank, 10.
...Mounting port member, 11...Latching ring, 12
... Protruding piece, 13 ... Inclined cam, 14.
... Loosening notch, 15 a ... Stopper, 15b ... Locking step, 16 ... Projection piece, 17 ... Guide Shiba Inu , 18... Arc-shaped engagement recess.

Claims (1)

[Scope of utility model registration request] The spring receiving plate 3 of the coil spring 1 is attached to a main body 2 having a coil spring 1 therein, and a valve body 5 containing a valve 4 is provided on the main body 2, and the spring receiving plate 3 and the valve 4 are connected. 6, and a spring 8 is applied in the direction in which the valve 5 contacts the valve seat 7, and a locking ring 11 fitted on the spring receiving plate 3 of the main body 2 is connected to the cap mounting opening member 10 provided on the tank 9. Projection piece 12
.
4, a stopper 15a and a locking stepped portion 15b are provided at the terminal end, and guide Shiba dogs 17, 17 are formed on the lower edge of the locking ring 11, which are in contact with other projecting pieces 16, 16 protruding from the spring receiving plate 3. , an arcuate engagement recess 18 at the starting end of the guide Shiba dog 17, 17.
, 18 is recessed.