JPH10153020A - Key insertion guiding device for cylinder lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the inserting action of a key in darkness by forming a conical face continued to a keyhole on a rotor constituted of main and auxiliary key guides, and forming the auxiliary key guide with a luminous polymer material. SOLUTION: An auxiliary key guide 7 rotatable together with a main key guide 5 is fitted in front of the main key guide 5 of a cylinder lock. A conical insertion hole 72 centering on a keyhole 52 is formed on the front face of the auxiliary key guide 7, and a conical guide slant face 53 continued to the insertion hole 72 is formed on the front face of the main key guide 5. The guide slant face 53 is smoothly connected to the insertion hole 72, and a single conical face is formed on a rotor constituted of the main key guide 5 and the auxiliary key guide 7. The auxiliary key guide 7 is made of a polymer material containing a luminous component. The inserting action of a key can be easily made in darkness at night.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a key insertion guide device for a cylinder lock.

[0002]

2. Description of the Related Art As a conventional key insertion guide device for a cylinder lock, a sub-key guide which rotates together with the main key guide is mounted in front of a main key guide of the cylinder lock. An example in which the key insertion hole is formed in a conical shape can be given. Such a technique is disclosed in, for example, Japanese Utility Model Laid-Open No. 3-61074 and is well known.

According to the above-mentioned conventional apparatus, when the key is pointed at the keyhole on the front surface of the main key guide when the key is bright, even if the key tip is slightly shaken, the key tip is formed in the conical hole in the insertion hole of the sub key guide. Since the guide is guided along the inclined surface, the key can be inserted into the main key guide of the lock quite easily.

[0004] However, the insertion operation becomes considerably troublesome in darkness such as at night.

[0005]

SUMMARY OF THE INVENTION A key insertion guide device for a cylinder lock according to the present invention has been proposed for the purpose of making it possible to easily perform a key insertion operation even in darkness without lighting equipment. It is.

[0006]

In order to achieve the above-mentioned object, the present invention provides an auxiliary key guide which is rotatable with the main key guide in front of a main key guide of a cylinder lock. A conical surface connected to the keyhole is formed on the rotating body composed of the key guide, and the sub-key guide is formed of a polymer material containing a luminous component.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. 1 to 6,
Reference numeral 10 denotes a door, 20 denotes a lock box fixed to the door 10, 1
Is an outer cylinder of the cylinder lock, which is fixed to the lock box 20 by the fixing rod 11 or the like, 2 is inserted into the mounting cylinder 1 from the rear, and the rear end is pressed by the retaining ring 32 via the spacer 31. 33 is a stop spring fitted between the mounting cylinder 1 and the outer cylinder 2, 5 is integrally provided on the front end side of the inner cylinder 6 in the outer cylinder 2, and a front opening of the outer cylinder 2 and the mounting cylinder 1. The protruding main key guide 61 is a tail piece provided at the rear end of the inner cylinder 6 of the cylinder lock.

The above-mentioned main key guide 5 has a circular cross-sectional outer shape, and is formed around the protruding portion in front of the main key guide 5 in the thickness direction of the sub-key guide 7 having an annular shape larger in diameter than the main key guide 5. The rear part is fitted.

The fitting portion of the main key guide 5 is provided with an arbitrary number (four in the illustrated example) of fitting grooves 51 which are parallel to the rotation center axis thereof. Is an arbitrary number parallel to the rotation center axis (4 in the illustrated example).
The ridge 71 of the present invention is provided integrally.

When the sub-key guide 7 is mounted on the main key guide 5, the fitting groove 51 and the ridge 71 are fitted into each other, so that both are integrated and can be rotated together.

With respect to the fitting groove 51 and the ridge 71 as detent means between the main key guide 5 and the sub key guide 7, the fitting groove is provided in the sub key guide 7, and the ridge is provided in the main key guide. 5 may be provided.

A key insertion hole 72 to be inserted into the key hole 52 of the main key guide 5 is provided at a front portion in the thickness direction of the sub key guide 7. The insertion hole 72 is provided in the key hole 52. It is formed in a conical shape located substantially at the center.

In the drawing, reference numeral 53 denotes a conical guiding inclined surface provided on the front surface of the main key guide 5 so as to be continuous with the conical insertion hole 72.

The guide inclined surface 53 and the insertion hole 72 are smoothly connected to each other to form a single conical surface formed on the rotating body including the main key guide and the sub key guide 7.

Reference numeral 73 denotes a notch provided in the inner peripheral portion of the conical insertion hole 72 of the sub key guide 7, and the notch 73 is a key hole of the insertion hole 72 and the main key guide 5. 52
This is to escape the shoulder of the key inserted into the.

What is important in the present invention is that part or all of the sub key guide 7 is formed of a polymer material containing a luminous component.

As shown in FIGS. 1 and 2, in this embodiment, in order to prevent the auxiliary key guide 7 from coming off in the axial direction with respect to the main key guide 5, the holding cylinder 8 is provided with the mounting cylinder 1 described above. It is attached around.

The holding cylinder 8 is formed by superimposing an inner member 81 and an outer member 82, and the base thereof is fixed to the mounting cylinder 1 by caulking means 83 or the like.

The tip of the outer member 82 of the holding cylinder 8 is bent inward to form a stopper 84 for pressing the front surface of the sub key guide.

In FIG. 2, reference numeral 85 denotes a receiving ring which is mounted in a space surrounded by the distal end surface of the mounting cylinder 1 and the inner surface on the distal end side of the holding cylinder 8 and has an L-shaped cross section. The receiving ring 85 is not necessarily provided.

In FIGS. 1 and 2, reference numeral 9 denotes a decorative ring fitted around the boundary between the mounting cylinder 1 and the holding cylinder 8 and having a truncated cone shape.
The compression spring 91 fitted around the mounting cylinder 1 is sandwiched between the base end of the holding cylinder 8 and the spring receiving portion 92 of the decorative ring 9 in the length direction, so that the base end of the door 10 is It is elastically abutted on the surface.

The decorative ring 9 as described above is connected to a compression spring 91.
The mechanism for causing the door 10 to resiliently contact the door 10 even if there is a difference in the thickness of the door.

[0023]

According to the key insertion guide device for a cylinder lock according to the present invention described above, even when the night is dark, the sub key guide located in front of the main key guide emits light to light the sub key guide. Since the presence can be recognized visually, if the key is pointed at the sub-key guide that emits light, then the key grasped by the finger will be tactile to the keyhole by the conical surface formed in the main key guide and sub-key guide. And the key insertion operation in the darkness such as at night is greatly facilitated.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a key insertion guide device in a cylinder lock according to the present invention.

FIG. 2 is a partial vertical sectional side view thereof.

FIG. 3 is a front view of a sub key guide removed from the embodiment of FIG. 1;

FIG. 4 is a vertical sectional side view of the sub key guide.

FIG. 5 is a rear view of the auxiliary key guide.

FIG. 6 is a vertical sectional view of the sub key guide.

[Explanation of symbols]

 5 Primary key guide 7 Secondary key guide 72 Insertion hole 73 Notch

Claims (2)

[Claims] 1. A sub-key guide which is rotatable together with a main key guide is mounted in front of a main key guide of a cylinder lock, and a conical surface connected to a keyhole is formed on a rotating body composed of the main key guide. A key insertion guide device for a cylinder lock, wherein the auxiliary key guide is formed of a polymer material containing a luminous component. 2. A notch portion for releasing a shoulder portion of a key inserted into the insertion hole is provided on an inner peripheral portion of the conical key insertion hole of the sub key guide. A key insertion guide device for the cylinder lock according to claim 1.