JP3056286U - Connection structure of rotor and rotor front cover in cylinder lock - Google Patents

Abstract

(57) [Problem] To provide a coupling structure of a rotor and a rotor front cover in a cylinder lock, in which a positioning operation can be performed smoothly and accurately and a coupling step is efficiently performed. SOLUTION: A plurality of anti-rotation protrusions 6, 6 are provided on a peripheral edge 7 of a rotor front cover 5 with a difference in circumferential width w set in a circumferential direction. A plurality of coupling tongues 8 are provided, and a plurality of rotation stopping recesses 2 are provided on the front end flange 3 of the rotor 1 in correspondence with the rotation stopping projections 6, 6. Each rotation preventing projection 6 is engaged, and each coupling tongue piece 8 is bent to the back side of the front end flange 3.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting a rotor and a rotor front cover in a cylinder lock.

[0002]

2. Description of the Related Art Conventionally, in the manufacture of a cylinder lock, a rotor and a rotor front cover are connected by covering a short cylindrical rotor front cover on a front end flange portion of the rotor and placing a peripheral edge of the rotor front cover behind the front end flange portion. This is done by bending. When connecting the rotor and the front cover of the rotor, it is necessary to match the arrangement position of the key holes of the rotor and the key insertion holes of the front cover of the rotor. Therefore, a positioning jig has to be separately prepared and both positions must be defined using the jig, and the positioning operation in the joining process is troublesome.

In the coupling structure disclosed in Japanese Utility Model Laid-Open Publication No. 6-62151, a plurality of rotation stoppers and a coupling tongue are provided on the periphery of a rotor front cover, and a plurality of rotation stoppers are provided on a front end flange of the rotor. A concave portion is provided, the detent is engaged with the detent portion, and the tongue is bent to the back side of the front flange portion. However, since the plurality of rotation-preventing projections and the rotation-stopping concave portions are arranged at equal intervals in the circumferential direction, and the widths in the circumferential direction are set to the same width, they completely function as positioning means. And it was necessary to perform cumbersome positioning work using a separately prepared positioning jig.

[0004]

[Problems to be Solved by the Invention] Therefore, the purpose of the present invention is to provide a cylinder lock in which the alignment of the key hole of the rotor and the key insertion hole of the rotor front cover can be performed smoothly and accurately, and the joining process can be efficiently performed. The object of the present invention is to provide a coupling structure between the rotor and the rotor front cover.

[0005]

In the coupling structure according to the present invention, a plurality of anti-rotation projections 6, 6 are provided on the peripheral edge 7 of the rotor front cover 5 with a difference in the width dimension w in the circumferential direction. A plurality of coupling tongues 8 are provided on a peripheral edge 7 between the rotation stopping projections 6, 6, and a plurality of rotation stopping recesses 2 are formed on the front end flange 3 of the rotor 1 on the rotation stopping projections 6, 6. Correspondingly, the respective detents 6 are engaged with the respective depressed recesses 2, and the respective coupling tongues 8 are bent behind the front end flange 3.

In the joining operation, the rotor front cover 5 is lightly abutted against the front end face of the rotor 1 in an arbitrary direction, and the rotation stopping projections 6 and the rotation stopping recesses 2 whose circumferential widths match each other are joined together. Rotate the rotor front cover 5 within an appropriate angle range until it is engaged directly. After detecting that the alignment has been completed by the engagement feeling and the engagement sound transmitted to the fingertip, the rotor front cover 5 is strongly pressed against the front end surface of the rotor 1, and the rotation stopping protrusion 6 is inserted into the rotation stopping recess 2. Engage deeply. Thereafter, the hair tongue piece 8 is bent toward the back side of the front end flange 3 by a suitable pressing means.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, the rotor 1 and the rotor front cover 5 are die-cast from a zinc alloy, an aluminum alloy, or the like. A keyhole closing shutter member (not shown) is inserted between the rotor 1 and the rotor front cover 5. The rotation preventing recess 2 of the front end flange 3 of the rotor 1, the rotation preventing protrusion 6 of the peripheral edge 7 of the rotor front cover 5, and the coupling tongue 8 are provided four each, but the width in the circumferential direction is provided. The dimensions w are different from each other (w1 ≠ w2 ≠ w3 ≠ w4).

[0008]

As described above, in the coupling structure of the present invention, a plurality of rotation stopping projections 6 and 6 are provided on the peripheral edge 7 of the rotor front cover 5 with a difference in the width dimension w in the circumferential direction. Since a plurality of rotation stopping recesses 2 are provided on the front end flange 3 of the rotor 1 in correspondence with the rotation stopping projections 6, 6, the rotation stopping projections 6 and the rotation stopping recess 2 are simply provided by the rotor front cover 5. Not only functions as a means for preventing rotation of the rotor 1 with respect to the rotor 1 but also as a positioning means for guiding the key hole 4 of the rotor 1 and the key insertion hole 9 of the rotor front cover 5 to be at the proper positions. Since it functions, the positioning operation can be performed smoothly and accurately without using a separately prepared positioning jig, and the process can be promptly shifted to the next bending process of the bonding tongue piece 8, so that the entire bonding process can be performed. Work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a front view of a rotor front cover in a coupling structure according to an embodiment of the present invention.

FIG. 2 is a rear view of the rotor front cover.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a front view of a rotor in the coupling structure.

FIG. 5 is a right side view of the rotor.

FIG. 6 is a rear view of the rotor.

FIG. 7 is a longitudinal sectional view of a state where the rotor and the rotor front cover are combined.

FIG. 8 is a rear view of the same coupling state.

FIG. 9 is a longitudinal sectional view of the entire structure of the cylinder lock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotor 2 Rotor rotation stopping recess 3 Rotor front end flange 4 Rotor key hole 5 Rotor front cover 6 Rotor front cover rotation stopping projection 7 Peripheral edge of rotor front cover 8 Tongue piece for connecting rotor front cover 9 Rotor Key insertion hole in front cover 10 Lock body 11 Washer 12 Bolt 13 Clasp plate 14 Disk tumbler

Claims (1)

[Utility model registration claims] 1. A plurality of rotation preventing projections 6, 6 are provided on a peripheral edge 7 of a rotor front cover 5 with a difference in a width dimension w in a circumferential direction, and a peripheral edge 7 between the rotation preventing projections 6, 6 is provided. A plurality of coupling tongue pieces 8 are provided on the front end flange 3 of the rotor 1, and a plurality of rotation stopping recesses 2 are provided corresponding to the rotation stopping projections 6, 6, respectively. The locking structure of the rotor and the rotor front cover in the cylinder lock, in which the rotation preventing projections 6 are engaged with each other, and the connecting tongue pieces 8 are bent to the back side of the front end flange 3.