JP3064119U - Tool for opening and closing the drum lid - Google Patents

Abstract

(57) [Problem] To facilitate opening and closing work of a drum can lid by freely adjusting a turning radius of a handle portion,
The lid cover can be removed at the time of opening. SOLUTION: This is a tool for opening and closing a large and small lid provided on an upper surface of a drum can, a main shaft portion 1 having a through hole 2 penetrating radially at a substantially central portion in an axial direction, and a cone at an end portion. Screw shaft 3 having a portion 4 and movably inserted into through hole 2
A nut 5 for fixing the screw shaft 3 to the main shaft portion 1; and a large cover provided at one end of the main shaft portion 1 for rotating the screw shaft 3 around the axis by rotating the screw shaft 3. A flat first engagement piece 7 that engages with a rotational force receiving surface provided on the main body and transmits a rotational force to the lid; A second flat plate-shaped engagement that is provided at an end portion and that engages with a rotational force receiving surface provided on a small lid and transmits rotational force to the lid when the main shaft portion 1 is rotated around an axis. Piece 8
And

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a tool for opening and closing lids of different diameters provided on the upper surface of a drum.

[0002]

[Prior art]

 Generally, two holes having different diameters are formed on the upper surface of the drum can. The large hole is used as an injection hole for organic industrial products and the like, and the small hole is used as an air vent hole. As a lid for sealing the large hole, for example, as shown in FIG. 2, a bottomed cylindrical portion b having a threaded portion a screwed into the hole of the drum can on an outer peripheral portion, and an inner peripheral portion of the bottomed cylindrical portion b A surface is provided with a pair of projections c which are provided at 180 ° apart from each other in the circumferential direction, and the side surfaces of the projections c are rotational force receiving surfaces.

On the other hand, as a lid for sealing a small hole, for example, as shown in FIG. 3, a lid similar in shape to FIG. 2, or as shown in FIG. 5 and two convex ridges e traversing along the radial direction inside the bottomed cylindrical portion b as shown in FIG. , The projections c or the side faces of the ridges d and e are the rotational force receiving surfaces. In FIGS. 2 to 5, reference numeral f denotes a lid cover.

[0004] As a conventional tool that opens and closes the lid by transmitting the rotational force to the rotational force receiving surfaces of the large and small lids, for example, the one described in Japanese Utility Model Laid-Open No. 57-193366 is known. This tool has a shaft-shaped handle portion and a three-way protrusion fixed to one end of the handle portion. One or two of the three-way protrusions are placed in the bottomed cylindrical portion of the lid. By inserting and rotating the handle in this state, the projections engage with the rotational force receiving surface of the lid to transmit the rotational force to the lid.

[0005]

[Problems to be solved by the invention]

 However, in such a conventional drum can lid opening / closing tool, since the three-sided projection engaging with the rotational force receiving surface is fixed to one end of the handle portion, the turning radius when turning the handle portion is large. Therefore, when the drum can is placed near the wall, the handle portion may hit the wall. In such a case, it is necessary to open and close the lid by moving the drum can away from the wall, and there is a disadvantage that much labor and labor are required.

When the cover is attached to the lid, there is a disadvantage that it is necessary to separately prepare a driver or the like for removing the cover f when the lid is opened. The present invention has been made to solve such inconvenience, and it is possible to freely adjust the turning radius of the handle so as to open and close the large and small lids even when the drum can is placed near a wall. It is an object of the present invention to provide a drum can lid opening / closing tool capable of easily performing the opening and closing of the lid cover at the time of opening.

[0007]

[Means for Solving the Problems]

 In order to solve such inconvenience, a drum can lid opening / closing tool according to claim 1 is a tool for opening / closing a large / small lid provided on the upper surface of a drum can. A main shaft portion having a through hole penetrating in a direction perpendicular to the main shaft portion, a handle portion having a weight portion at an end and movably inserted through the through hole, and the handle portion being attached to the main shaft portion. A fixing means for fixing, and a rotation force receiving surface provided on the large lid when the handle is operated to rotate the main shaft around the axis, provided at one end of the main shaft. A first engagement piece having a flat plate shape for transmitting a rotational force to the lid, and a notch at the center of the tip, provided at the other end of the main shaft, and operating the handle. When the main shaft portion is rotated around the axis, the rotational force receiving surface provided on the small lid Engage, characterized in that example Bei a flat-shaped second engagement piece for transmitting the rotational force to the lid by.

A second aspect of the present invention is directed to a drum lid opening / closing tool according to the first aspect, wherein the first engagement piece has a notch at the center of the distal end thereof. A drum can lid opening / closing tool according to claim 3 is characterized in that, in claim 1 or 2, using a screw shaft as the handle portion, the screw portion of the screw shaft and a nut screwed to the screw portion. The fixing means is constituted, and a cylindrical cover is extrapolated to an operation portion of the screw shaft.

[0009]

[Embodiment of the invention]

 Hereinafter, a drum can lid opening / closing tool which is an example of an embodiment of the present invention will be described with reference to FIG. This drum can lid opening / closing tool is for opening and closing the large and small drum can lids shown in FIGS. 2 to 5 described above, and includes a round bar-shaped main shaft portion 1 as shown in FIG. A through hole 2 penetrating in a direction (radial direction) perpendicular to the axial direction is formed at a substantially central portion in the axial direction of the main shaft portion 1, and the through hole 2 is longer than the main shaft portion 1. The screw shaft (handle portion) 3 is movably inserted. At one end of the screw shaft 3, a conical portion (weight portion) 4 whose diameter is reduced toward the tip is formed, and a screw portion 3 a of the screw shaft 3 protruding on both radial sides of the main shaft portion 1. Is screwed with a pair of nuts 5. By tightening the nut 5, the screw shaft 3 is fixed to the main shaft portion 1, and the axial movement of the screw shaft 3 is restricted.

Here, in this embodiment, the fixing means of the present invention is constituted by the screw portion 3 a of the screw shaft 3 and the pair of nuts 5. A cylindrical cover 6 made of, for example, vinyl is externally inserted into the screw shaft 3 (operating portion) projecting from both sides in the radial direction of the main shaft portion 1, and the screw shaft 3 is rotated by holding the cover 6 by hand. By operating, the main shaft 1 is rotated forward and reverse around the axis.

A first engaging piece 7 is provided at the upper end of the main shaft 1 to engage with the rotational force receiving surface of the large lid shown in FIG. 2, and the lower end is shown in FIGS. A second engagement piece 8 is provided which engages the rotational force receiving surface of the small lid. The first engagement piece 7 is formed of a rectangular flat plate that is long in the radial direction of the main shaft 1, and a substantially central portion of a lower portion is fixed to an upper end of the main shaft 1 by welding or the like. The radial dimension of the main shaft portion 1 of the first engagement piece 7 is set to be equal to or slightly shorter than the inner diameter of the bottomed cylindrical portion b of the large lid shown in FIG. 2 and can be inserted into the bottomed cylindrical portion b. It has been.

The second engagement piece 8 is formed of a rectangular flat plate member smaller than the first engagement piece 7, and a substantially central portion of an upper portion is fixed to a lower end portion of the main shaft portion 1 by welding or the like. The radial dimension of the main shaft portion 1 of the second engagement piece 8 is set substantially equal to or slightly shorter than the inner diameter of the bottomed cylindrical portion b of the small lid shown in FIGS. The second engaging piece 8 can be inserted, and the thickness of the second engaging piece 8 is set to be thinner than the gap between the respective ridges e shown in FIG. A substantially U-shaped notch 9 that can be inserted into the ridge d shown in FIG. 4 is formed at the center of the lower portion (tip) of the second engagement piece 8.

Next, a method for opening and closing the large and small lids shown in FIGS. 2 to 5 using the drum lid opening / closing tool having the above configuration will be described. In the state shown in FIG. 1, the screw shaft 3 projects substantially the same length on both sides in the radial direction of the main shaft portion 1 to minimize the turning radius. Here, the turning of the screw shaft 3 is performed so that the screw shaft 3 does not hit an obstacle such as a wall when the screw shaft 3 is turned, and the posture of the worker during the turning operation is most comfortable. Adjust the moving radius. As described above, this adjustment is performed by loosening the pair of nuts 5 to move the screw shaft 3 in the axial direction, and tightening the pair of nuts 5 when a predetermined turning radius is obtained. Is fixed to the main shaft 1.

As for the large lid shown in FIG. 2, the first engagement piece 7 is inserted into the bottomed cylindrical portion b of the lid as shown by a two-dot chain line, and the rotation of the engagement piece 7 is performed. The side surface facing the direction is arranged to face the rotational force receiving surface of the projection c, and in this state, the screw shaft 3 is rotated to rotate the main shaft 1 around the axis, whereby the engagement piece 7 The rotational force is transmitted to the lid by engaging with the rotational force receiving surface.

For the small lid shown in FIG. 3, as shown by the two-dot chain line, the second engaging piece 8 is inserted into the bottomed cylindrical portion b of the lid and turns in the rotation direction of the engaging piece 8. The side face is arranged to face the rotational force receiving surface of the projection c, and in this state, the screw shaft 3 is rotated to rotate the main shaft portion 1 around the axis, so that the engaging piece 8 becomes the rotational force receiving surface of the projection c. And torque is transmitted to the lid.

As for the small lid shown in FIG. 4, the notch 9 of the second engagement piece 8 is inserted into the ridge d as shown by the two-dot chain line, and the screw shaft 3 is rotated in this state. By rotating the main shaft portion 1 around the axis, the engaging piece 8 is engaged with the rotational force receiving surface of the ridge d to transmit the rotational force to the lid, and the small lid shown in FIG. 2 is inserted into the gap between the ridges e, and in this state, the screw shaft 3 is rotated to rotate the main shaft 1 around the axis, whereby the ridges e are formed. The rotational force is transmitted to the lid by engaging with the rotational force receiving surface.

If the cover is attached to the cover, before opening the cover, the conical portion 4 formed at the end of the screw shaft 3 is pierced into the cover f so that the cover can be opened. Remove cover f. At this time, since the screw portion 3a is formed at the base of the conical portion 4, the screw portion 3a is hooked on the lid cover f and can be removed easily and reliably.

In the above-described embodiment, the case where the notch 9 is provided only in the second engagement piece 8 is taken as an example. However, as shown in FIG. A similar notch 10 may be provided at the center of the tip. In this way, the present invention can be applied to opening and closing of a large lid similar to the lid shown in FIG.

[0019]

[Effect of the invention]

 As is clear from the above description, according to the present invention, since the turning radius of the handle portion can be adjusted independently, even when the drum can is placed near a wall, the handle portion can be adjusted. The handle can be prevented from hitting the wall, and the turning radius of the handle portion can be obtained in accordance with a comfortable posture of the operator. As a result, opening and closing operations of the large and small lids can be performed easily and quickly. The effect is obtained.

Further, since the weight portion is formed at the end of the handle portion, there is an effect that both the operation of opening and closing the large and small lids and the operation of removing the lid cover at the time of opening can be performed with one tool. can get.

[Brief description of the drawings]

FIG. 1 is an explanatory view for explaining a drum can lid opening and closing tool which is an example of an embodiment of the present invention.

FIG. 2 is an explanatory perspective view for explaining a larger one of large and small lids having different diameters provided on an upper surface of a drum can.

FIG. 3 is an explanatory perspective view for explaining a smaller one of large and small lids having different diameters provided on an upper surface of a drum can.

FIG. 4 is an explanatory perspective view for explaining another example of the smaller lid.

FIG. 5 is an explanatory perspective view for explaining another example of the smaller lid.

FIG. 6 is an explanatory view for explaining a drum lid opening / closing tool according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main shaft part 2 ... Through-hole 3 ... Screw shaft (handle part) 3a ... Screw part (fixing means) 4 ... Conical part (weight-like part) 5 ... Nut (fixing means) 6 ... Cylindrical cover 7 ... First member Joint piece 8: Second engagement piece 9, 10: Notch

Claims (3)

[Utility model registration claims] 1. A tool for opening and closing a large and small lid provided on an upper surface of a drum can, wherein a main shaft portion having a through hole formed at a substantially central portion in an axial direction and penetrating in a direction orthogonal to the axial direction,
A handle portion having a weight portion at an end and movably inserted through the through hole, fixing means for fixing the handle portion to the main shaft portion, provided at one end of the main shaft portion, A first flat plate-shaped engagement member that engages with a rotational force receiving surface provided on the large lid and transmits rotational force to the lid when the main shaft portion is rotated about an axis by operating a handle portion. With the piece,
A notch at the center of the tip is provided at the other end of the main shaft portion, and when the handle portion is operated to rotate the main shaft portion around the axis, the rotation provided at the small lid A second flat plate that engages with the force receiving surface and transmits rotational force to the lid
A tool for opening and closing a drum can lid, comprising: 2. The tool for opening and closing a drum can lid according to claim 1, wherein a notch is provided at a central portion of a tip end of the first engagement piece. 3. Using a screw shaft as the handle portion,
The screw means of the screw shaft and a nut screwed to the screw part constitute the fixing means, and a cylindrical cover is extrapolated to an operation part of the screw shaft. 3. The tool for opening and closing a drum can lid according to 1 or 2.