JP2929527B2 - Key insertion guide device for cylinder lock - Google Patents

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 face of the main key guide when the key is bright, even if the key tip is slightly shaken, the key tip is in the conical shape 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]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is directed to a housing which is housed in a mounting cylinder and has a front end connected to a front end of the inner cylinder.
The main key guide provided physically is attached to the front end face of the outer cylinder and attached.
Cylinder mounted on the outer surface of the door while projecting from the cylinder
A lock, a holding cylinder fitted to the outside of the mounting cylinder, and a main key guide.
And has an annular shape with a diameter larger than that of the main key guide.
And a conical key guide on the main key guide.
Guide slope and conical insertion hole in front of sub key guide
Respectively, and slide these conical insertion holes and guiding slopes.
To form a single conical surface connected to the keyhole
In both cases, insert the key hole into the inner periphery of the insertion hole of the sub key guide.
Form a pair of notches to allow the shoulder of the key to escape.
On the other hand, the fitting part of the primary key guide and the secondary key guide
The fitting grooves and protrusions formed in the
And keep the opening edge of the front end of the holding cylinder inside.
Side to form a stopper, which is
To the outer periphery of the front key
The auxiliary key guide is made of luminous material.
Characterized in that it is made of a high molecular weight material.

[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 a mounting cylinder fixed to the lock box 20 by the fixing rod 11 or the like, 2 is an outer cylinder of a cylinder lock inserted into the mounting cylinder 1 from the rear, and having a rear end pressed by a retaining ring 32 via a 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 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. The notch 73 is a key hole of the insertion key 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.
Is to insert the compression spring 91 fitted around the mounting tube 1 between the base end of the holding tube 8 and the spring receiving portion 92 of the decorative ring 9 in the longitudinal direction, so that the base end of the door 10 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 the thickness of the door is different.

[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 visually recognized, if the key is pointed at the sub-key guide that emits light, then the key grasped with the fingers will be tactile to the keyhole by the conical surface formed on 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]1 Mounting tube 2 outer cylinder  5 Primary key guide52 Keyhole 53 Guide slope 6 inner cylinder  7 Secondary key guide 72 Insertion hole 73 Notch8 Holding tube 84 Stopper

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) E05B 15/00 E05B 15/02 E05B 15/08 E05B 17/00 E05B 17/10

Claims (1)

(57) [Claims] 1. An inner cylinder is housed in a mounting cylinder and integrated with a front end of the inner cylinder.
The main key guide provided on the front end face of the outer cylinder and the mounting cylinder
Cylinder lock attached to the outer surface of the door while projecting from
, A holding cylinder fitted to the outside of the mounting cylinder, and a main key guide
Forming a larger diameter ring, fitted outside the primary key guide
And a conical guide to the main key guide.
Insert a conical insertion hole in the front of the sub key guide.
Formed to smooth these conical insertion holes and guiding slopes
To form a single conical surface connected to the keyhole
Into the keyhole at the inner periphery of the insertion hole of the sub key guide.
A pair of notches to allow the shoulder of the key to escape
On the other hand, the main key guide and the sub key guide
The formed fitting groove and protrusion are fitted
At the front end of the holding cylinder,
To form a stopper, which is then
To the outer periphery of the front of the
The secondary key guide is made of a luminous component
A key insertion guide device for a cylinder lock, wherein the device is made of a polymer material containing: