JPH0239874U

JPH0239874U -

Info

Publication number: JPH0239874U
Application number: JP11812788U
Authority: JP
Priority date: 1988-09-07
Filing date: 1988-09-07
Publication date: 1990-03-16

Description

[Brief explanation of drawings]

第１図は本考案のボツクスビツトの要部断面図
、第２図は第１図の横断面図、第３図は従来例の
要部端面図である。１……ボツクスビツト、２……案内穴、３……
１２面駆動穴、３ａ，３ｂ……六角穴、３ｃ……
収納穴、４……ナツト、５……角部、６……ピン
収納穴、７……鍔付ピン、８……弾性リング。 FIG. 1 is a sectional view of a main part of the box bit of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is an end view of a main part of a conventional example. 1... Box bit, 2... Guide hole, 3...
12-sided drive hole, 3a, 3b...hexagonal hole, 3c...
Storage hole, 4... Nut, 5... Corner, 6... Pin storage hole, 7... Flammed pin, 8... Elastic ring.

Claims

[Claims for Utility Model Registration] Two hexagonal holes 3a and 3b, which correspond to the desired nut 4 and have line symmetry with their centers coincident, are provided at the tip;
One of the two adjacent corners 5 formed by these two hexagonal holes 3a and 3b is deleted, and a storage hole 3c is formed in this portion to accommodate the desired nut 4.
A 12-sided drive hole 3 having a shape consisting of an arc surface forming a part of the 12-sided drive hole 3 is provided, while a corner portion 5 extending in a direction intersecting the 12-sided drive hole 3 and facing the 12-sided drive hole 3 is provided at the tip. A pin storage hole 6 is bored at the position 5, and a flanged pin 7 with a hemispherical tip that can freely protrude into the 12-sided drive hole 3 is slidably provided in each of the pin storage holes 6. A box bit characterized in that the flange of the pin 7 is pressed from the outer periphery by an elastic ring 8.