JPH0220657U

JPH0220657U -

Info

Publication number: JPH0220657U
Application number: JP9469088U
Authority: JP
Priority date: 1988-07-18
Filing date: 1988-07-18
Publication date: 1990-02-09
Anticipated expiration: 2003-07-18
Also published as: JPH0648063Y2

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すもので、第１図
は基本的な一例の第２図のＡ―Ａ断面図、第２図
同縦断側面図、第３図はキー回動時における第１
図と対応する平面図、第４図は第３図の状態にお
ける部分縦断側面図、第５図は別の実施例の第６
図のＢ―Ｂ断面図、第６図は同縦断側面図、第７
図は縦断正面図、第８図はキー回動時における第
５図と対応する平面図、第９図は第８図の状態に
おける部分縦断側面図、第１０図、第１１図はキ
ー抜け防止用プレートの別の形態の平面図である
。１…ローター、３…キー抜け防止用プレート、
４…バネ、５…頭部、７…シリンダーボデイ、８
…突起、１０…キー、１１…切欠き、１２…ロツ
ク孔、１５…キー抜け防止用プレート、１７…山
形の窪み。 The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view taken along the line AA in FIG. 2 of a basic example, FIG. 2 is a vertical side view of the same, and FIG. 1
FIG. 4 is a partial longitudinal sectional side view of the state shown in FIG. 3, and FIG. 5 is a 6th view of another embodiment.
BB sectional view in the figure, Fig. 6 is a vertical sectional side view, Fig. 7
The figure is a longitudinal sectional front view, Fig. 8 is a plan view corresponding to Fig. 5 when the key is rotated, Fig. 9 is a partial longitudinal sectional side view in the state shown in Fig. 8, and Figs. 10 and 11 are prevention of key removal. It is a top view of another form of a plate for use. 1...Rotor, 3...Key removal prevention plate,
4...Spring, 5...Head, 7...Cylinder body, 8
... protrusion, 10 ... key, 11 ... notch, 12 ... lock hole, 15 ... key removal prevention plate, 17 ... chevron-shaped recess.

Claims

[Claims for Utility Model Registration] (1) A key removal prevention plate 3 having the same shape as a tumbler is provided on the upper part of the rotor 1 via a spring 4, and the head 5 of this plate is formed into a chevron shape. A chevron-shaped protrusion 8 is provided on the inner circumferential surface of the cylinder body 7 corresponding to the key 10, and a cutout is provided at the base of the key 10 at a position corresponding to the key removal prevention plate 3 at the insertion position where the key can be rotated. A notch 11 is provided, and in a position where the key can be removed, the head 5 of the key removal prevention plate is in contact with the protrusion 8 of the cylinder body, and when the key is rotated, the abutment is released and the key removal prevention plate is removed. , a key locking structure that fits into the notch 11 of the key. (2) A wide key removal prevention plate 15 with a protrusion 16 in the center is provided at the bottom of the rotor 1 so as to move like a tumbler via a spring 4, and the head 5 of this plate is shaped like a chevron. At the same time, a chevron-shaped recess 17 is provided on the inner circumferential surface of the cylinder body 7 corresponding to the head, while a protrusion 16 protruding from the center of the key removal prevention plate is provided at the tip of the key. A lock hole 12 into which the protrusion fits is provided at a corresponding position, and at a position where the key can be removed, the head 5 of the key removal prevention plate is fitted into the recess 17 of the cylinder body, and when the key is rotated, the head 5 of the key removal prevention plate is inserted into the recess. A key locking structure in which the head part comes out and the protruding part 16 of the plate fits into the lock hole 12 of the key.