JP4024337B2 - Key insertion guide device for cylinder lock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a key insertion guide device for a cylinder lock, and more particularly to a key insertion guide device that facilitates locking and unlocking operations at night.
[0002]
[Prior art]
The locking and unlocking operation of the cylinder lock at night is difficult in the first place to find the cylinder lock and its keyhole. In order to cope with this difficulty, a battery and a small lamp are incorporated in the key knob, and the light of this lamp is Or illuminating the keyhole by incorporating a lighting device into a door knob with a built-in cylinder lock, as described in Japanese Utility Model Publication No. 63-198760 or Japanese Utility Model Publication No. 63-194403, for example. There are also suggestions.
[0003]
The above-described keyhole illumination device operates reliably and can brightly illuminate the keyhole, but the structure of the key and knob is complicated, and replacement of batteries and light bulbs is indispensable, and maintenance management is essential.
[0004]
In order to eliminate the inconveniences described above, for example, the inventions and devices described in Japanese Utility Model Laid-Open No. 59-185370, Japanese Utility Model Laid-Open No. 54-74690 or Japanese Patent Application Laid-Open No. 8-189232 absorb daytime light and are dark at night. It has been proposed to provide a luminous material that emits light or a polymer material containing a luminous component in the keyhole or in the vicinity of the keyhole.
[0005]
[Problems to be solved by the invention]
However, this proposal has the advantage that no battery is used for the illumination of the keyhole, and there is no need for maintenance. However, when the luminous paint is applied in the keyhole, the luminous paint is peeled off or worn out by use. There is an inconvenience that the function is lost immediately.
[0006]
On the other hand, when the phosphorescent member is provided near the keyhole other than the inside of the keyhole, the keyhole cannot be seen from the light emitting point, in other words, the light from the light emitting point cannot reach the keyhole directly, There is an inconvenience that the keyhole lighting effect is very suspicious.
[0007]
Accordingly, an object of the present invention is to provide a key insertion guide device for a cylinder lock that clearly reveals the location of the cylinder lock at night and can reliably guide the key tip to the key hole.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a sub key guide that is rotatable with the main key guide is mounted in front of the main key guide of the cylinder lock, and therefore, the following first and second guide holes are provided. sufficiently large length of, forming together with the sub-key guide constitutes a base layer positioned on the surface layer and the rear side located in front side superimposed fixed to the surface layer is a polymeric material containing a phosphorescent component On the other hand, a first guide hole having a quadrangular pyramid shape with a wide front is provided at the front part in the thickness direction of the sub key guide, and the first guide hole and the key hole of the main key guide are provided at the rear part of the sub key guide. the square cylindrical second guide hole provided, also sized to circumscribe the front shape of the end portion transverse sectional shape and cross-sectional shape of the second guide hole are both primary keys guide key hole of the first guide hole contiguous Therefore, the keyhole is controlled by restricting the inclination of the key inserted obliquely into the guide hole. Characterized in that so as to coincide with the central axis.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
1 to 3, reference numeral 10 denotes a door, 20 denotes a lock box fixed to the door 10, 1 denotes a mounting cylinder fixed to the lock box 20 by a fixing rod 11 or the like, and 2 denotes insertion into the mounting cylinder 1 from the rear. An outer cylinder of a cylinder lock whose rear end is pressed by a retaining ring 32 via a spacer 31, 33 is a retaining spring fitted between the mounting cylinder 1 and the outer cylinder 2, and 5 is an inside of the outer cylinder 2. A main key guide 61 integrally provided on the front end side of the inner cylinder 6 and protruding from the front opening of the outer cylinder 2 and the mounting cylinder 1 is a tail piece provided at the rear end of the inner cylinder 6 of the cylinder lock. It is.
[0010]
In the present invention, a sub key guide 7 is mounted so as to be able to rotate together in front of the main key guide 5. The sub key guide 7 includes a surface layer 76 positioned on the front side and a base layer 77 positioned on the rear side, and the surface layer 76 is formed of a polymer material having a luminous component.
[0011]
Therefore, the surface layer 76 becomes brighter by emitting light stored in the daytime in the dark such as at night.
[0012]
Although the base layer 77 is made of brass or other metal material or a tough and hard synthetic resin material, the base layer 77 itself is not provided with a luminous component, and the base layer 77 does not emit light.
[0013]
The surface layer 76 and the base layer 77 are polymerized and fixed to each other, and any means such as adhesion, welding, or screwing can be used as the fixing means.
[0014]
Alternatively, the surface layer 76 can be formed by applying or spraying a liquid polymer material containing a phosphorescent component (so-called nocturnal paint) on the surface of the base layer 77 to solidify it.
[0015]
Further, the main key guide 5 has a circular cross-sectional outer shape, and a rear portion in the thickness direction of the sub key guide 7 having an annular shape larger in diameter than the main key guide 5 is formed around the front protruding portion. Is inserted.
[0016]
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, and the fitting portion of the sub key guide 7 is rotated. An arbitrary number (four in the illustrated example) of protrusions 71 that are parallel to the central axis are integrally provided.
[0017]
When the sub key guide 7 is attached to the main key guide 5, the fitting groove 51 and the protrusion 71 are fitted to each other, so that both are integrated and can rotate together.
[0018]
With respect to the fitting groove 51 and the protrusion 71 as a 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 protrusion is provided in the main key guide 5. You may do it.
[0019]
As shown in FIGS. 1 and 2, in this embodiment, the holding cylinder 8 is mounted around the mounting cylinder 1 in order to prevent the auxiliary key guide 7 from coming out of the main key guide 5 in the axial direction. It is.
[0020]
The holding cylinder 8 is formed by superposing an inner member 81 and an outer member 82, and a base portion thereof is fixed to the mounting cylinder 1 by caulking means 83 or the like.
[0021]
The distal end portion of the outer member 82 in the holding cylinder 8 is formed in a stopper portion 84 that is bent inward to hold down the front surface portion of the sub key guide 7.
[0022]
In FIG. 2, reference numeral 85 denotes a receiving ring having a L-shaped cross section mounted in a space surrounded by the front end surface of the mounting cylinder 1 and the inner surface on the front end side of the holding cylinder 8, for receiving the sub key guide 7. However, the receiving ring 85 is not necessarily provided.
[0023]
In FIG. 1 and FIG. 2, reference numeral 9 denotes a decorative ring whose outer shape fitted around the fitting portion of the mounting cylinder 1 and the holding cylinder 8 forms a truncated cone shape. The compression spring 91 fitted around is sandwiched between the base end of the holding cylinder 8 and the spring receiving portion 92 of the decorative ring 9 in the longitudinal direction, so that the base end portion is elastically applied to the surface of the door 10. Touched.
[0024]
The mechanism for elastically contacting the decorative ring 9 to the door 10 by the compression spring 91 is for dealing with a difference in the thickness of the door.
[0025]
A quadrangular pyramid-shaped first guide hole 72 with a wide front is provided in the front portion in the thickness direction of the sub key guide 7, and a quadrangular columnar second guide hole 73 is provided in the rear portion of the sub key guide 7.
[0026]
The second guide hole 73 communicates with the first guide hole 72 at the front portion and the key hole 52 of the main key guide 5 at the rear portion.
[0027]
The cross-sectional shape of the rearmost portion of the first guide hole 72 and the cross-sectional shape of the second guide hole 73 are both formed into a rectangle that is substantially circumscribed by the front shape of the key hole 52 of the main key guide 5. is there.
[0028]
In other words, the key hole 52 of the main key guide 5 is formed in a rectangular shape having a size that substantially includes the front shape.
[0029]
Further, the first guide hole 72, the second guide hole 73, and the key hole 52 of the main key guide 5 are connected so that their respective central axes are substantially aligned.
[0030]
Next, an example of the key 4 used for the key insertion guide device of the present invention will be described with reference to FIGS.
[0031]
The key 4 is inserted into the key hole 52 of the main key guide 5 through the first guide hole 72 and the second guide hole 73 of the sub key guide 7 as will be described in detail later. A pin-shaped protrusion 43 is provided as a stopper protruding by caulking or the like on one surface or both surfaces of the flat plate surface of the stem portion 41 having a flat plate shape.
[0032]
The protrusion 43 is an escape groove 74 provided on the inner wall surface from the first guide hole 72 to the second guide hole 73 of the sub key guide 7 along the central axis of the sub key guide 7 when the key 4 is inserted. The insertion depth (length) of the key 4 with respect to the cylinder lock is regulated by abutting with the abutting portion 75 at the end of the escape groove 74 left uncut.
[0033]
Two escape grooves 74 may be provided at a position sandwiching the central axis as shown in the drawing, or only one may be provided. Further, the contact portion (75) at the end of the escape groove 74 may not be provided. In that case, the protrusion 43 of the key 4 is brought into contact with the front surface of the main key guide 7 so that the insertion depth of the key 4 is increased. regulate.
[0034]
However, the protrusion 43 described above is not essential. In a key (not shown) having no protrusion (43), for example, the front end edge of the key knob (42) is brought into contact with the front surface of the sub key guide 7 or the inclined surface of the first guide hole 72. Regulate insertion depth.
[0035]
Next, the operation of inserting the key 4 into the cylinder lock with the apparatus according to the present invention will be described with reference to FIGS.
[0036]
First, the key 4 is directed to the first guide hole 72 of the sub key guide 7 in accordance with the type of the key insertion type (whether the flat plate surface of the key is inserted horizontally or inserted vertically). When pushed in as it is, the angle around the central axis is regulated at the four inclined surfaces of the first guide hole 72, and then the inclination of the central axis of the key 4 is corrected at the second guide hole 73. The central axis coincides with the central axis of the key hole 52.
[0037]
As shown in FIG. 7, the length of the second guide hole 73 in the central axis direction is preferably longer than that of the pointed tip of the key 4.
[0038]
Here, since the key 4 is kept in the proper posture with respect to the key hole 52 by the second guide hole 73 of the sub key guide 7, it is only necessary to press the key 4 after that, and the key 4 is inserted into the key hole 52 very smoothly. .
[0039]
When the surroundings are dark, such as at night, the presence of the sub key guide 7 can be visually recognized by the light emission of the surface layer 76 of the sub key guide 7, and the opening portion of the first guide hole 72 where the surface layer 76 is cut off is dark. Since it can be seen, the key tip only needs to be directed to the dark part, and after that, the key 4 can be simply inserted into the key hole 52 as described above.
[0040]
In this case, since the area of the surface layer 76 of the sub key guide 7 is larger than the dimension of the key hole, it can be easily recognized whether the cylinder lock is present, and the opening area of the first guide hole 72 of the sub key guide 7 is the key tip. Since it is much larger than the size, it is very easy to insert the key tip into the first guide hole.
[0041]
【The invention's effect】
According to the key insertion guide device for the cylinder lock of the present invention described above, the presence of the cylinder lock is first revealed by the surface layer that emits light when the surroundings are dark, such as at night.
[0042]
In addition, the central portion of the surface layer that emits light is omitted due to the presence of the first guide hole, and that portion looks darker than the other portions of the surface layer. The position can be recognized accurately, and insertion into the keyhole of the key tip becomes extremely easy.
[0043]
Furthermore, it is not necessary to point the key tip into the first guide hole of the sub key guide, and then search for the key hole with the key tip or consciously fine-tune the position of the key tip. Since the correct key insertion posture is automatically taken just by pressing the key, the key insertion operation is extremely easy.
[0044]
In addition, instead of brightly illuminating the target of the key tip, the center of the light emitting part is darkened by the opening of the first guide hole and displayed by the difference in brightness. The target can be clearly displayed, and even if the performance of the phosphorescent member drops due to aging and becomes dark, there are various effects such as no change in the display performance.
[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 longitudinal side view thereof.
3A and 3B are views of the sub key guide removed from the embodiment of FIG. 1, in which FIG. 3A is a front view, FIG. 3B is a rear view, and FIG.
4A and 4B are diagrams showing an example of a key used for the embodiment of FIG. 1, in which FIG. 4A is a plan view, and FIG.
5 is a partially longitudinal side view showing a first stage of inserting a key into the embodiment of FIG. 1;
FIG. 6 is an explanatory diagram showing the second stage of key insertion in a plan view.
FIG. 7 is an explanatory diagram showing the third stage of key insertion in a plan view.
FIG. 8 is a partially longitudinal side view showing the final stage of key insertion.
[Explanation of symbols]
5 Main key guide 52 Key hole 7 Sub key guide 72 First guide hole 73 Second guide hole 76 Surface layer 77 Base layer

Claims (1)

A sub-key guide that can be rotated together with the main key guide is mounted in front of the main key guide of the cylinder lock, so that the length of the following first and second guide holes is made sufficiently large. The guide is constituted by superposing and fixing a surface layer located on the front side and a base layer located on the rear side, and the surface layer is formed of a polymer material containing a luminous component, while the thickness direction of the sub key guide is provided with a forward widely the pyramidal first guide hole in the front portion, the second guide hole of square pole leading to the key hole of the first guide hole and the primary key guide provided on the rear portion of the sub-key guide, also , cross-sectional shape of the end portion transverse sectional shape and the second guide hole of the first guide hole is sized to circumscribe both the front shape of the primary key guide key hole, than Te, plugged obliquely in the guide hole it was to regulate the inclination of the master key that it has to match the central axis of the keyhole Insert guide device of the key in the cylinder lock to be a butterfly.

Images