Patent Application
20180207789
The present invention relates to a tool box.
Conventional tool boxes for sockets are shown in patents TW M299064 and TW 533972. The tool box is manufactured by a foamed piece with recess. The socket can be inserted into the recess and be positioned by the foamed material.
However, tool boxes are often brought or placed reversely. Thereby, the sockets embedded in the foamed piece may fall down easily. Besides, after using for a long time, the recess of the foamed material may be enlarged to make it difficult to position the sockets.
Some tool boxes have protrusions on the side walls of the recess, so the socket can be positioned by the protrusions to be difficult to detach. However, it is not quite easy to position the socket, and the socket may still fall down when inclining.
The main object of the present invention is to provide a tool box which is able to position the socket firmly and allows the socket to be easily detached.
To achieve the above and other objects, a tool box of the present invention is adapted for receiving at least one socket. The socket has a sleeve hole. The sleeve hole has a minimum internal diameter defined as d. The tool box includes a main body. The main body has a protrusion which is hollow. The protrusion is made of plastic and includes a top portion and a body portion. The protrusion has a maximum external diameter defined as D. D is 1.65 times to 1.85 times d. The protrusion is adapted for the socket to sleeve onto with the sleeve hole so that the socket is positioned on the main body.
Thereby, the tool box of the present invention can position the socket firmly and can be detached easily. In addition, the tool box hardly damages.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
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In addition, the thickness of the body portion 122 of the protrusion 12 is defined as T, and the relationship between T and d is defined by an equation of T=0.0315d+0.1. The height of the protrusion 12 is defined as H, and H is 0.8 times d to 0.9 times d. The thickness of the top portion 121 of the protrusion 12 is defined as t, and t is smaller than T.
In the present embodiment, for the ¼″ socket (d=6.35 mm), D is ranged between 6.75 mm to 6.85 mm, preferably 6.8 mm. T is 0.3 mm, and H is ranged between 5.4 mm to 5.6 mm, preferably 5.5 mm. For the ⅜″ socket (d=9.525 mm), D is ranged between 10.25 mm to 10.35 mm, preferably 10.3 mm. T is 0.4 mm, and H is ranged between 7.9 mm to 8.1 mm, preferably 8 mm. For ½″ socket (d=12.7 mm), D is ranged between 13.55 mm to 13.65 mm, preferably 13.6 mm. T is 0.5 mm, and H is ranged between 10.4 mm to 10.6 mm, preferably 10.5 mm.
Specifically, the protrusion 12 is shaped by blow molding. The main body 10 is formed with at least one recess 11. The protrusion 12 is formed on the bottom of the recess 11. A first chamfer 123 is formed between the top portion 121 and the body portion 122 of the protrusion 12. A second chamfer 124 is formed between the body portion 122 of the protrusion 12 and the bottom portion of the recess 11. The first chamfer 123 facilitates the protrusion 12 to insert into the sleeve hole 21 of the socket 20, and the second chamfer 124 enhances the connection between the protrusion 12 and the bottom of the recess 11 to prevent the protrusion 12 from breaking.
Please refer to
Practically, the main body can be shaped by blow molding as a single piece. That is, the recess and the protrusion are both shaped by blow molding. Besides, the external diameter of the protrusion is slightly larger than the internal diameter of the sleeve hole of the socket, and the plastic material has slight elasticity so that the socket can be positioned on the protrusion. However, the external diameter of the protrusion is not too large so that the socket may not be difficult to be detached. In addition, the top portion of the protrusion is thinner than the body portion, so the elasticity of the protrusion along the radial direction is larger, and the body portion still has enough structure strength.
