JPH0575195U - Lid removal prevention device for liquid inlet of liquid transfer tank - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the liquid transfer tank inadvertently falls, the engaged liquid inlet lid is not removed. [Structure] A protrusion 6 having a slit 12 through which a bolt 2 can be inserted is formed on the outer periphery of a liquid injection port 11 of a tank body 10, and a hole 3 having a diameter through which the bolt 2 can be inserted is formed in the protrusion 6. The plate 1 is engaged with the pins 8 etc. so as not to be laterally displaced. After the lid body 9 is engaged with the liquid inlet 11 formed in the tank body 10, the plate body 1 in which the bolt 2 is inserted in advance and temporarily fixed with the nut 4 is attached to the slit 12 in which the bolt 2 is formed on the protrusion 6. Protrusion 6 while inserting
Then, the plate 1 and the projection 6 are engaged with each other by tightening the nut 4 on the upper surface of the plate 1. Even if the tank containing the liquid falls due to this engaging force, the bolt 2 is prevented from coming off the slit 12, and the lid 9 is prevented from coming off the liquid inlet 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing removal of a lid for a liquid inlet of a liquid transfer tank, which prevents the engaging lid for a liquid inlet from coming off even if the liquid transfer tank accidentally falls. Is.

[0002]

[Prior Art]

 As shown in FIG. 4, a liquid transfer tank body that has been generally used in the past has a turtleneck-shaped liquid injection port 11 formed in the upper part thereof, and the metal injection port 11 shown in FIG. The band 13 was tightly wound, and the bolts 2 were pivotally attached to the band 13 at three regular intervals so as to be vertically rotatable. Moreover, the nut 4 was screwed to the free end side of the bolt 2.

On the other hand, as shown in FIG. 6, the lid 9 for closing the liquid injection port 11 forms a hinge portion 14 for rotatably connecting to the tank body 10, and A protrusion 6 is provided at a position corresponding to the position of the bolt 2 arranged on the band 13 wound around the outer circumference of the liquid injection port 11, and the protrusion 6 is provided with a slit 12 through which the bolt 2 can be inserted. There was

When the lid 9 is fixed to the liquid inlet 11 under such a configuration, the bolt 2 is attached to the lid 9 after the lid 9 is pushed into the liquid inlet 11. The lid 9 was fixed to the liquid inlet 11 by inserting it into the slit 12 formed in the protrusion 6 and tightening it with the nut 4.

[0005]

[Problems to be solved by the device]

 In the above-mentioned conventional example, there is no particular problem in statically using the tank body 10 in a normal state, but in the case where the liquid is stored inside the tank body 10 and it accidentally falls over for some reason. However, the impact may cause the bolt 2 to be disengaged from the slit 12, and the lid 9 may be easily detached due to the internal hydraulic pressure. A similar accident occurs when the nut 4 is tightly tightened. When the nut 4 is tightly tightened, only a part of the protrusion 6 is firmly attached to the edge of the liquid injection port 11. There was a phenomenon in which a gap that slightly floated up was generated in the other part of the lid 9 that was pressure-bonded, and as a result, liquid swaying during transfer may cause liquid leakage.

In order to prevent the lid body 9 from coming off when the tank body 10 falls, a hole may be formed instead of the slit 12 formed in the above-mentioned protrusion 6. However, if the holes are temporarily formed, a problem arises in that the nut 4 must be removed from the bolt 2 each time the bolt 2 is connected, which means that the work is required when opening and closing the liquid inlet 11. Normally, the number of the bolts 2 and the protrusions 6 is three (or four) as shown in the figure, but even then, attachment and detachment is complicated. On the other hand, in the case of the slit 12, since it can be carried out in a state in which it is screwed into the bolt 2 as long as the nut 4 is loosened, the complexity is eliminated and therefore the slit 12 is formed in the protrusion 6. -ing

[0007]

[Means for Solving the Problems]

 Therefore, in order to solve the above-mentioned problems, the device for preventing removal of the lid for the liquid injection port of the liquid transfer tank according to the present invention forms the liquid injection port of the liquid transfer tank main body in a turtleneck shape. A band is wound around the liquid inlet, and a bolt screwed with a nut is rotatably pivotally attached to the band. On the other hand, the lid for the liquid inlet has a projection formed with a slit through which the bolt can be inserted. After the lid is engaged with the liquid inlet, the bolt is inserted into the slit of the protrusion and the nut is tightened from above to fix the lid to the liquid inlet of the tank body. In this structure, a plate body having a hole having a diameter through which the bolt can be inserted is engaged with the protrusion by a pin or the like so as not to laterally shift.

[0008]

[Action]

 That is, after the lid was pushed into the liquid inlet formed in the liquid transfer tank body and engaged so that the plate was inserted in advance and temporarily fixed with the nut, the bolt was formed on the protrusion. While inserting it into the slit, apply it to the upper surface of the protrusion and tighten the nut to tightly engage the plate and the protrusion, and even if the liquid transfer tank containing the liquid falls due to this engaging force, the bolt Can be prevented from coming off the slit, and the lid body can be prevented from coming off from the liquid inlet.

[0009]

【Example】

 Next, an embodiment of a device for preventing removal of a lid for a liquid inlet of a liquid transfer tank according to the present invention will be described with reference to the drawings. The structure of the liquid transfer tank main body 10 and the structure of the lid 9 are as described above. This is similar to the conventional example. Therefore, the description is applied here mutatis mutandis.

The difference is that the plate 1 is used. That is, the plate 1 is formed with a hole 3 through which the bolt 2 can be inserted, and the bolt 2 is always inserted into the hole 3 and temporarily fixed by a nut 4. Therefore, the plate body 1 is always connected to the bolt 2.

Reference numeral 5 is a recess formed in the projection 6, and reference numeral 7 is a hole different from the hole 3 of the plate body 1. A headed pin 8 is tightly fitted in this hole 7.

Then, after the lid 9 is pushed into the liquid injection port 11 of the tank body 10, the bolt 2 is rotated and inserted into the slit 12, and then the pin 8 previously inserted into the plate 1 is projected. The plate body 1 is positioned so as to face the recess 5 formed in 6 and the nut 4 is tightened accordingly.

As a result, the plate body 1 is brought into close contact with the upper surface of the projection 6, and the pin 8 is inserted into the recess 5. In this case, even if the pin 8 is tightly fitted in the hole 7 of the plate body 1, it is possible that the pin 8 does not enter the recess 5 but slips out of the hole 7 when the plate body 1 is pressed. It is sufficient to drive the pin 8 in place, and if the pin 8 is instead fixed (welded) to the plate body 1 in advance, the pin 8 will enter the recess 5 at the same time when the plate body 1 is pressed.

By thus inserting the pin 8 into the recess 5, the plate body 1 is prevented from being laterally displaced. Since the use of the pin 8 is intended to prevent the lateral displacement of the plate body 1 as described above, for example, unevenness is formed on the surface of the protrusion 6 and the unevenness corresponding to this is formed on the plate body 1. It may be formed on the back surface. In this case, it is not necessary to use the pom 8.

Therefore, even if the liquid transfer tank inadvertently rolls over, the bolt 2 is prevented from rotating by the hole 3 of the plate body 1 fixed to the protrusion 6, so that the bolt 2 can be rotated even after rollover. Also, the tank body 10 and the lid 9 are firmly connected to each other via the nut 4 and are not separated.

In the above description, the recess 5 formed in the protrusion 6 is formed on both sides of the slit 12 formed in the protrusion 6 as a boundary, and the hole 7 formed in the plate 1 is also the hole 3. It is preferable to form them on both sides with the boundary as the boundary in order to firmly fix the projection 6 of the plate body 1.

The hole 3 formed in the plate body 1 may be a perfect circle, but as shown in the figure, the slit 12 formed in the projection 6 is a slot facing the direction of the slit 12. It is preferable for adjusting the position with respect to.

Further, the tank body 10 and the lid body 9 are usually made of synthetic resin, and therefore the lid body 9 is fixed to the liquid inlet 11 of the tank body 10 by the bolt 2 and the nut 4. When the area of the plate body 1 is small, the tightening of the lid body 9 by the nut 4 is localized, and the other part of the lid body 9 is filled with the liquid inlet 11 Since a slight gap tends to occur between the lid body 9 and the liquid injection port 11 so as to float above the plate body 1, the plate body 1 is as large as possible, that is, the protrusion, in order to prevent this. By forming the shape corresponding to the shape of the upper surface of 6, it is possible to prevent the above-mentioned gap from occurring.

[0019]

[Effect of the device]

 As described above, according to the device for preventing removal of the lid for the liquid injection port of the liquid transfer tank according to the present invention, the liquid injection port of the liquid transfer tank main body is formed in a turtleneck shape, and the periphery of the liquid injection port is formed. A band is wound around the bolt, and a bolt in which a nut is screwed is rotatably pivotally attached to the band.On the other hand, a protrusion having a slit through which the bolt can be inserted is formed on the liquid injection port lid. After engaging the lid with the liquid inlet, insert the bolt into the slit of the protrusion and tighten the nut from above to fix the lid to the liquid inlet of the tank body. In this case, since a plate body having a hole having a diameter through which the bolt can be inserted is engaged with the protrusion by a pin or the like so as not to be laterally displaced, the liquid injection tank body for liquid injection is formed. After engaging the lid as if pressing the lid onto the plate, insert the plate into which the bolt was inserted in advance and temporarily fixed with the nut, while inserting the bolt into the slit formed in the protrusion while applying it to the upper surface of the protrusion, By tightly engaging the plate and the protrusion, even if the liquid transfer tank containing the liquid falls due to this engaging force, the bolt is prevented from coming off the slit, and thus the lid is This has the effect that it can be prevented from leaving the liquid inlet.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a device for preventing removal of a lid for a liquid inlet of a liquid transfer tank according to the present invention.

FIG. 2 is a perspective view of a plate body.

FIG. 3 is a perspective view showing a state in which the liquid injection port lid detachment preventing device of the liquid transfer tank according to the present invention is released.

FIG. 4 is a front view of the liquid transfer tank main body with a part omitted.

FIG. 5 is a plan view of a band.

FIG. 6 is a plan view of a lid body.

[Explanation of symbols]

 1 Plate 2 Bolt 3 Hole 4 Nut 5 Recess 6 Protrusion 7 Hole 8 Pin 9 Lid 10 Liquid Transfer Tank Body 11 Liquid Inlet 12 Slit 13 Band 14 Hinge

Claims (3)

[Scope of utility model registration request] 1. A liquid inlet of a liquid transfer tank main body is formed in a turtleneck shape, a band is wound around the liquid inlet, and a bolt screwed with a nut is rotatably pivotally attached to the band. On the other hand, the lid for the liquid inlet has a protrusion formed with a slit through which the bolt can be inserted, and after the lid is engaged with the liquid inlet, the bolt is inserted into the slit of the protrusion. Then, in the one in which the lid is fixed to the liquid injection port of the tank body by tightening the nut from above, a plate body having a hole having a diameter through which the bolt can be inserted is formed on the protrusion by a pin or the like. A lid detachment prevention device for a liquid injection port of a liquid transfer tank, which is engaged so as not to be laterally displaced. 2. The lid detachment prevention device for a liquid injection port of a liquid transfer tank according to claim 1, wherein the plate shape is formed so as to correspond to the shape of the upper surface of the protrusion. 3. The lid detachment prevention device for a liquid injection port of a liquid transfer tank according to claim 1, wherein the hole formed in the plate body is an elongated hole formed in the protrusion and directed in the slit direction.