JP4623386B2 - Openable item storage box - Google Patents

Description

The present invention relates to a lock clamp mechanism for opening and closing a bottom plate of a box (hereinafter, abbreviated as an industrial waste box) capable of opening the bottom and mainly storing industrial waste.

Conventionally, a lever-type large handle has been used to lock the bottom plate of an industrial waste box that can be opened from the bottom (see FIGS. 8 and 9 and Patent Document 1).
However, the conventional bottom-open industrial waste box has the following drawbacks.
1. Since the conventional bottom-open industrial waste box has a structure in which the lock shaft is rotated when locking and the clamp fitting is locked only by the lever action, a large force is required and the opening / closing operation is not easy.
2. For example, when an industrial waste box is placed on rough terrain, one side of the bottom plate may be in close contact with each other, and simply rotating the lock shaft prevents the clamp fitting from hitting the bottom plate and locking it. Then I had to lock it after closing the bottom plate.
3. In addition, when the large handle is at the top, stacking work using a forklift was not possible.

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The present invention solves the above-mentioned problems, makes it possible to easily lock the bottom plate even when an industrial waste box is placed on rough terrain, and uses a forklift by reducing the handle attached to the top. It is possible to carry out stacking work.

The open / close lock shaft 6 having the threaded portion 6a is rotated by the bending type operation handle 10 so that the lock clamp metal fitting 5 at the tip is brought into contact with the edge portion 13 of the bottom plate.
At this time, since the screw portion 6a of the lock shaft is screwed with the female screw portion 7, the height of the lock clamp fitting 5 fixed to the lower end portion of the lock shaft 6 is adjusted by adjusting the rotation speed of the handle 10. Because it can be adjusted, the bottom plate can be easily locked even if the industrial waste box is placed on rough terrain.
Further, if the height adjusting nut 8 is screwed to the lock shaft 6 instead of the fixed female screw portion 7, the height of the lock clamp fitting 5 can be obtained without turning the handle 10. The tightening degree of the bottom plate can be adjusted.

  Since the load of the lock clamp metal 5 is completely released by the vertical movement of the lock shaft 6, the handle operation is sufficient even with a small hand.

  The base plate is tightened to close the base plate or released by turning the handle 10 or the height adjusting nut 8 with a small force, not only on flat ground but also on rough ground or when locking. Can be easily done.

  The outer diameter of the height adjusting nut is about 10 cm, and the handle is bent, so that a space is created at the top of the box, and stacking with a forklift is possible.

  Further, by dropping the small bendable handle 10 into the space 12 formed between the receiving plate 11 which also serves as an opening / closing display plate and the main body, there is no accident of unlocking during the work.

  When the height adjusting nut 8 is used, the height of the lock clamp metal fitting 5 can be changed without turning the handle 10. Therefore, a protrusion 5a is provided at the tip of the lock clamp metal fitting 5, and the edge of the bottom plate is provided. It can be made to fit with the provided convex part 13a. By doing so, for example, even if the bottom plate is slightly bent due to the weight of the contents, the bottom plate can be prevented from opening because a strong locking function acts.

When installed on unstable ground, the bottom plate can be securely closed even if one of them is slightly open by using the lock shaft's up and down movement function.

  The folding handle 10 for operating the lock shaft 6 is installed on the upper part of the main body 1 for the sake of convenience. The lock shaft 6 has a threaded portion 6a, and the lock shaft 6 moves up and down by rotating the nut 8 with a height adjusting nut 8 that fits in the hand.

Since the handle 10 is dropped into the space 12 for storing the handle sandwiched between the handle receiving plate 11 which also serves as an opening / closing display plate and the main body 1, when the height adjusting nut 8 is rotated in the loosening direction. In addition, without rotating together, the lock shaft 6 is lowered and the lock clamp fitting 5 is separated from the bottom plate.

  When the handle 10 which has become unloaded is turned 180 ° and dropped in the opposite direction, the lock clamp 5 is directed forward and the lock is completely released.

  The handle 10 is bent and accommodated in a space 12 sandwiched between the handle receiving plate 11 serving as an open / close display and the main body 1 so that it does not reversely rotate and is stored in a small size, so that a space for forklift work can be created.

  When the waste storage box body 1 is lifted with the lock clamp fitting 5 released, the support plate 3 is first rotated as a rotating shaft, the bottom plate 2 is first inclined from the front, and the stored material on the bottom plate is discharged. .

  There are cases where there is one bottom plate and one rotating shaft, and there are cases where the bottom plate is divided into two parts and one on each of the two opposite sides of the rotating shaft. In either case, the locking mechanism according to the present invention is used. Can be adopted.

  Next, a method of using the bottom opening box based on the configuration of the best mode for carrying out the invention will be described below.

The bottom opening box placed on the unstable ground or the flat ground is securely locked by the lock shaft 6, the height adjustment nut fitting 8 and the folding type opening / closing handle 10, and the handle receiving plate 11 which also serves as the opening / closing display plate is provided. The handle 10 is set in alignment with the bottom plate opening prohibition position (x mark portion). Eventually, when the stored items are full, the handle 10 is moved as it is (with the bottom plate tightened) to the disposal site, the main body 1 is placed at the disposal site, and the handle 10 is rotated 180 ° to accept the handle that also serves as an open / close display The plate 11 is inserted into the bottom plate open position (◯ mark).
In addition, by painting the handle 10 in a bright color such as yellow, the position of the lever can be easily seen through a hole having a shape of “○” formed in the handle receiving plate 11.
In addition, it becomes easier to distinguish the back and front of the handle with different colors.

  When operating the handle, if the load is applied to the bottom plate and the handle 10 does not rotate, turn the height adjusting nut 8 to unload the lock clamp fitting, and turn the handle 10 180 ° to open / close the display. Drop into the handle receiving plate 11 which also serves as a plate.

Since the clamp metal fitting 5 is now detached, when the main body 1 is lifted by the wire passed through the hanging metal fitting 4, the bottom plate 2 is opened around the support shaft 3 and the stored items are discharged.
When finished, the handle is returned to the locked state, and a series of work is completed.

External perspective view of waste storage box according to the present invention (corresponding to claim 1) External perspective view of waste storage box according to the present invention (corresponding to claim 2) Explanatory drawing of the locking mechanism by this invention Front sectional view corresponding to FIG. Explanatory drawing of the locking mechanism by this invention (Claim 4) Illustration of the end of the lock clamp bracket and bottom plate Explanatory drawing of the protrusion at the tip of the lock clamp fitting and the protrusion at the end of the bottom plate Example of a conventional waste storage box Example of conventional locking mechanism

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste storage box 2 Bottom plate 3 Bottom plate support shaft 4 Misalignment stop metal fitting 5 also used as a hanging metal fitting 5 Lock clamp metal fitting 5a Projection 6 provided at the tip of the lock clamp metal fitting 6 Lock shaft 6a Male thread 7 of the lock shaft Female thread 8 Height adjustment nut 9 Lever 9a Lever fulcrum 10 Folding type operation handle 11 Handle receiving plate 11a also serving as an open / close display plate Display window 12 showing open / closed state 13 Space for storing handle 13 Edge of bottom plate 13a Convex part 20 provided at the edge of the bottom plate Conventional lever 21 Lever stopper 22 Lever detent convex part

Claims (3)

In the article storage box where almost the entire surface of the bottom plate rotates around a horizontal support shaft and opens and closes,
A lock clamp fitting for supporting the bottom plate in a closed state at at least one portion of the bottom plate away from the support shaft;
The lock clamp metal fitting is fixed to a lower end portion of a lock shaft held by a vertical member constituting the storage box so as to be rotatable about a vertical axis,
The lock shaft extends from the bottom of the storage box to the top surface of the storage box,
A male screw is machined on the outer periphery of the lock shaft,
By screwing the male screw of the lock shaft with the female screw part held by the vertical member constituting the storage box,
When the lock shaft is rotated relative to the female thread portion, the height position of the lock clamp fitting changes ,
A lever is fixed to the upper end of the lock shaft at a right angle to the lock shaft,
Provide a handle rotatably connected with a pin at the tip of the lever,
By rotating the lever 180 degrees, it is possible to select a position where the lock clamp fitting locks the bottom plate and a position where the lock is released,
And there is a space for storing the handle at the locking position and the unlocking position,
An article storage box having a function of preventing rotation of the lever by storing the handle in the space. In an article storage box that opens and closes approximately symmetrically by rotating about two horizontal spindles that each half of the bottom plate faces,
A lock clamp fitting that supports the bottom plate in a closed state in at least two places (at least four places in total) at a portion away from each support shaft of the bottom plate,
The lock clamp metal fitting is fixed to a lower end portion of a lock shaft held by a vertical member constituting the storage box so as to be rotatable about a vertical axis,
The lock shaft extends from the bottom of the storage box to the top surface of the storage box,
A male screw is machined on the outer periphery of the lock shaft,
By screwing the male screw of the lock shaft with the female screw part held by the vertical member constituting the storage box,
When the lock shaft is rotated relative to the female thread portion, the height position of the lock clamp fitting changes ,
A lever is fixed to the upper end of the lock shaft at a right angle to the lock shaft,
Provide a handle rotatably connected with a pin at the tip of the lever,
By rotating the lever 180 degrees, it is possible to select a position where the lock clamp fitting locks the bottom plate and a position where the lock is released,
And there is a space for storing the handle at the locking position and the unlocking position,
An article storage box having a function of preventing rotation of the lever by storing the handle in the space. A female screw portion that is screwed to the lock shaft is a nut disposed on an upper part of a vertical member that constitutes the storage box,
The article storage box according to claim 1 , wherein by rotating the nut, the position of the lock clamp fitting can be moved up and down without rotating the lock shaft.

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