JPH09296635A - Joint construction between rotor and rotor front cover in cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly and accurately execute alignment work and to promote efficiency of joint stage of works. SOLUTION: A plurality of rotation stopping projections 6 and 6 are provided on the circumferential edge 7 of a rotor front cover 5 by setting difference in the circumferential width, and a plurality of joint tongues 8 and 8 are provided on the circumferential edge 7 between the rotation stopping projections 6 and 6. Then, a plurality of rotation stopping recesses are provided to the front end collar section of a rotor in correspondence with the rotation stopping projections 6 and 6, the rotation stopping projections 6 are interlocked with the rotation stopping recesses, and the joint tongues 8 are bent to the rear side of the front end collar section.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a coupling structure for 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, in coupling a rotor and a rotor front cover, a short cylindrical rotor front cover is put on a front end flange portion of a rotor, and a peripheral edge of the rotor front cover is bent to a back side of the front end flange portion. It is done by When connecting the rotor and the rotor front cover, it is necessary to match the arrangement positions of the key holes of the rotor and the key insertion holes of the rotor front cover. Since it has not been done, it is necessary to separately prepare a positioning jig and define both positions using the jig, which requires time and effort for the positioning operation in the joining step.

In the coupling structure disclosed in Japanese Utility Model Laid-Open No. 6-62151, a plurality of rotation stopping projections and a coupling tongue are provided on the peripheral edge of the rotor front cover, and a plurality of rotation stoppers are provided on the front end flange of the rotor. Is provided with the anti-rotation projection, the anti-rotation projection is engaged with the anti-rotation projection, and the coupling tongue is bent to the back side of the front end flange portion. However, since the plurality of anti-rotation projections and the plurality of anti-rotation recesses are arranged at equal intervals in the circumferential direction, and the width dimension in the circumferential direction is set to the same width, they function as alignment means at all. However, it was necessary to perform a troublesome positioning work using a separately prepared positioning jig.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cylinder lock in which the alignment work 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 coupling process can be efficiently performed. An object of the present invention is to provide a combined structure of a rotor and a rotor front cover.

[0005]

In the coupling structure of the present invention, a plurality of rotation preventing projections 6 and 6 are provided on the peripheral edge 7 of the rotor front cover 5 with a difference in circumferential width dimension w.
A plurality of coupling tongues 8 and 8 are provided on the peripheral edge 7 between the rotation stopping projections 6 and 6, and a plurality of rotation stopping recesses 2 are formed in the front end flange portion 3 of the rotor 1 to the rotation stopping projections 6 and 6. Correspondingly provided, each anti-rotation recess 2 is engaged with each anti-rotation projection 6, and each coupling tongue piece 8 is bent to the back side of the front end flange portion 3.

In the coupling work, the rotor front cover 5 is lightly abutted against the front end face of the rotor 1 in an arbitrary direction, and the rotation stopper projection 6 and the rotation stopper recess 2 having the same width in the circumferential direction are aligned. The rotor front cover 5 is rotated within an appropriate angle range until it is engaged with the rotor front cover 5. After sensing that the alignment is completed by the engagement feel or 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 projection 6 is deeply inserted into the rotation stopping recess 2. Engage. After that, the bristle tongue piece 8 is bent to the back side of the front end collar portion 3 by an appropriate pressing means.

[0007]

In the illustrated embodiment, the rotor 1 and the rotor front cover 5 are die-cast by 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. Rotation stop recess 2 of front end flange 3 of rotor 1 and peripheral edge 7 of rotor front cover 5
4 are provided for each of the rotation preventing projections 6 and the coupling tongues 8, but the widths w in the circumferential direction are different from each other (w ₁ ≠ w ₂ ≠ w ₃ ≠ w ₄ ).

[0008]

As described above, in the coupling structure of 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 different widths w in the circumferential direction, and a plurality of anti-rotation recesses 2 are formed in the front end flange 3 of the rotor 1. Since the rotation stopper protrusions 6 and 6 are provided in correspondence with each other, the rotation stopper protrusion 6 and the rotation stopper recess 2 simply function as means for preventing the rotor front cover 5 from rotating with respect to the rotor 1. Not only the keyhole 4 of the rotor 1 and the rotor front cover 5
Since it also functions as a positioning means that guides the key insertion hole 9 to the normal position, the positioning work can be performed smoothly and accurately without using a separately prepared positioning jig, and the next coupling can be performed. Since the process of bending the tongue piece 8 can be swiftly performed, the work efficiency of the entire connecting process is improved.

[Brief description of 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 vertical cross-sectional view of the rotor and a rotor front cover in a coupled state.

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

FIG. 9 is a vertical cross-sectional view of the entire structure of a cylinder lock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rotor 2 rotor rotation stopper recess 3 rotor front end flange 4 rotor keyhole 5 rotor front cover 6 rotor front cover rotation stopper protrusion 7 rotor front cover peripheral edge 8 rotor front cover coupling tongue 9 rotor Front cover key insertion hole 10 Lock body 11 Washer 12 Bolt 13 Stop plate 14 Disc tumbler

Claims (1)

[Claims] 1. A plurality of rotation stopping projections 6, 6 are provided on a peripheral edge 7 of a rotor front cover 5 with a difference in circumferential width dimension w, and a peripheral edge 7 between the rotation stopping projections 6, 6 is provided. Is provided with a plurality of coupling tongues 8 and 8, and a plurality of rotation stopping recesses 2 are provided in the front end flange portion 3 of the rotor 1 corresponding to the rotation stopping projections 6 and 6, respectively. A coupling structure of a rotor and a rotor front cover in a cylinder lock, in which each rotation stopping projection 6 is engaged with and each coupling tongue piece 8 is bent to the back side of the front end collar portion 3.