JP2598263B2 - Locking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device, and more particularly to a dial-type locking device used for a door of a safe, a mail box or the like.

2. Description of the Related Art Conventionally, dial-type locking devices (so-called dial locks) used for doors of safes, mailboxes, etc. are generally provided with dial letters on the surface and a protruding hook at an appropriate place on the inside. An inner cylindrical body fixedly attached to the knob by a screw penetrating a center hole of the knob, and having a cutout at the rear end; ,
An outer cylinder body rotatably mounted on the inner cylinder body, having a projection engaged with the hook at an appropriate position at the front end, and having a notch formed at the rear end corresponding to the notch; It has been configured by a latch mechanism having a latch plate for unlocking and locking by engaging and disengaging with the notch of the cylinder and the inner cylinder.

In such a general dial lock, if the knob turning member is turned right or left based on the password after adjusting the knob turning member to an index number, for example, "0" character, the outer cylindrical body is rotated. The notch of the inner cylinder coincides with the rear end of the latch plate of the latch mechanism, and the latch plate becomes unlockable.

However, this kind of dial lock is convenient because the door of a mail box or the like can be easily opened by turning the knob turning member left and right based on a specific password, but the password is not used. There was a disadvantage that if something was known to others, that would be the end.

"Object of the Invention" In view of the above-mentioned drawbacks of the conventional dial lock, the present invention can arbitrarily convert a password when it becomes known or recognizable to others, It is an object of the present invention to provide a locking device that allows a desired password to be set by a simple operation at the time of conversion and that can be manufactured inexpensively with fewer constituent parts.

"Means for Achieving the Object of the Invention" The locking device according to the present invention includes an outer cylinder member 1, a knob rotation member 7 rotatably fitted to the outer cylinder member, and a back side of the knob rotation member. And a first engaging body 8 having a hook 11 and a plurality of engaging teeth 12 formed on a peripheral surface thereof. A cylinder which is provided inside a cylinder member and has on one end surface an engaged protruding piece 14 which engages with the hook of the first engagement body, while a plurality of engagement teeth 15 are formed on the other end surface. When the knob-shaped turning member 7 is turned to convert it into an arbitrary password,
The engagement teeth of the first engagement body 8 are provided on one end surface of the outer cylinder member so as to be separated from the plurality of engagement bodies 8 and 13.
A plurality of first and second teeth formed with engaged teeth 18 and 21 respectively engaging with the engaging teeth 15 of the second and second engaging bodies 13.
Are engaged and disengaged with the notches 20 and 23 formed on the other end surfaces of the first and second engaged members, respectively, to latch and unlock and lock. And a latch holder 26 removably mounted on the outer tubular member 1.

Hereinafter, the present invention will be described in detail with reference to examples shown in the drawings.

In the embodiment of FIGS. 1 to 5, X is a safe,
This is a dial-type locking device attached to a door of a mail box or the like. In this embodiment, it is fixed to the open end of the door a of the mail box Y.

That is, reference numeral 1 denotes an outer cylinder member fixed to the open end of the door a of the postal box Y with a fixing tool 2 such as a nut. The outer cylinder member 1 has a fitting portion 1a formed at a front end thereof. An outer cylindrical portion 1b which penetrates a mounting hole formed in the door a on the rear end side.
Is formed, and a mounting flange portion 1c that comes into contact with the front surface of the door a is integrally formed between the outer cylindrical portion 1b and the fitting portion 1a. Reference numeral 3 denotes a guide notch formed in the axial direction of the upper surface of the outer cylindrical portion 1b (based on FIG. 1) for fitting with a latch holder or the like of a latch mechanism described later. An elongated guide notch 4 for guiding the latch plate of the latch mechanism is formed on the lower surface of the opposed outer cylindrical portion 1b.
Reference numeral 5 denotes a mounting hole for a male screw 6 formed at the rear end of the outer cylinder portion 1b for fixing the latch holder of the latch mechanism to the outer cylinder member 1 as shown in FIG.

Reference numeral 7 denotes a knob-rotating member which is rotatably fitted to the fitting portion 1a of the outer cylinder member 1, and controls or releases the movement of the latch plate of the latch mechanism by a rotation operation to lock and unlock. Member 7
For example, dial characters 0 to 9 are provided on the front surface 7a. Reference numeral 8 denotes a first engaging member fixed to a concave portion formed on the back surface of the pick-and-turn member 7 by a fixing tool 9 such as a screw. A female screw 10 to be screwed with the fixing tool 9 is formed, a protruding hook 11 is integrally provided at an appropriate position on the inner peripheral side surface of the large diameter portion 8a, and a circle is formed on an end surface of the small diameter portion 8b. A plurality of engaging teeth 12 are formed at predetermined intervals in the circumferential direction. The first engaging member 8 is moved from the back side of the knob turning member 7 in FIGS.
As shown in the figure, the knob is fixed to the turning member 7 with the fixing tool 9,
It is located inside the fitting portion 1a of the outer cylinder member 1.

Reference numeral 13 denotes a cylindrical second engaging body provided inside the outer tubular member 1 so as to be rotated by the turning operation of the knob rotating member 7, and the second engaging body 13 is the first engaging body 8 A small-diameter fitting portion 13a having an engaged protruding piece 14 at an appropriate position, which is externally fitted to the small-diameter portion 8b and which is engaged with the hook 11 at one end surface; Large-diameter fitting portion 13b on which engagement teeth 15 are formed
Consisting of

16 and 17 are provided inside the outer cylindrical member 1 so as to separate from the first and second engaging members on the side of the knob turning member when the knob turning member 7 is turned and converted into an arbitrary password. A plurality of engaged bodies.

That is, 16 has a plurality of engaged teeth 18 which engage with the engaging teeth 12 of the first engaging body at one end surface, has a flange portion 19 at the rear end, and has a notch at the rear end portion of the inner cylindrical shape. The first engaged body in which the portion 20 is formed. Reference numeral 17 denotes a plurality of engaged teeth 21 which are rotatably fitted to the first engaged body 16 and are engaged with the engaging teeth 15 of the second engaging body on one end surface. Flange 22
And a notch at the rear end that matches the notch 20
Reference numeral 23 denotes a cylindrical second engaged body formed.

24 is a notch of each of the first and second engaged members 16 and 17
A latch mechanism detachably mounted on the outer cylinder portion 1b of the outer cylinder member 1 having a latch plate 25 which is unlocked and locked by being engaged with and disengaged from the latches 20 and 23. As shown in FIG. Is provided with a substantially cylindrical latch holder 26. 2 and 3, the latch plate 25 is engaged with a stopper piece c fixedly protruding from an inner side wall b of a door a of the mail box Y at a lower portion with reference to FIG. On the other hand, the joint 25a has a vertically elongated hole 25b formed at the center thereof, and is attached to the latch holder 26 by a pivot pin 27 so as to be vertically movable and tiltable. The latch holder 26 has an outer cylinder member 1.
Guide notches 26a corresponding to the above-described guide notches 3 and 4 and guiding the mounted latch plate 25 to be able to move up and down.
And the latch plate that is in communication with the guide notch 26a and tilts when the latch plate 25 moves upward or pivots in one direction.
A storage portion 26b for storing a coil spring 28 for urging the latch holder 25 to its original vertical state is formed. Further, a portion of the latch holder 26 near the rear end of the peripheral trunk portion is provided as shown in FIG. A female screw 29 is formed in the cylindrical member 1 so as to coincide with the male screw mounting hole 5 described above, and the male screw 6 is screwed through the mounting hole 5. An engagement recess 30 and a knob 31 for pulling out the latch holder 26 from the outer cylinder member 1 are provided.

A connecting member 32 integrally connects the plurality of engaged members 16 and 17 with which the latch holder 26 and the latch plate 25 are engaged and disengaged. In this embodiment, as shown in FIG. Engagement body 16
An annular portion 32a which is fitted to the peripheral body portion of the second engaged body 17 which is fitted to the outside, and which comes into contact with the flange portion 22; An elastic connecting arm 32c having an engaging claw 32b engaged with the engaging recess 30.

In the above configuration, FIG. 2 first shows that the first and second engaged members 16 and 17 are integrally connected to the latch holder 26 of the latch mechanism 24 by the connecting body 32 and are incorporated into the outer cylinder member 1. It indicates that it is locked. In this case, as shown, each of the notches 2 of the first and second engaged members 16 and 17
0 and 23 do not coincide with the upper end 25c of the latch plate 25 of the latch mechanism 24. Therefore, even if the door a is pulled through the knob pivoting member 7, the latch plate 25 remains behind the engaged members 16 and 17. It is restricted by the end face and cannot rotate and tilt. Next, FIG. 3 turns the knob turning member 7 left and right from the state of FIG. 2 based on the password, so that the notches 20 and 23 of the first and second engaged members 16 and 17 are It faces the upper end 25c of the latch plate 25, and indicates that it is in the unlocked state. In this case, when the door a is pulled, the latch plate 25 which engages with the stopper piece c is rotated and tilted until the engagement with the stopper piece is released, and the upper end 25c of each of the notches 2
Go inside 0, 23. Here, an operation mode from the locked state to the unlocked state will be described.
Is aligned with an indicator or indicator provided on the mounting flange 1c or the like of the outer cylinder member, and then rotated in one direction based on the first password. Then, the hook 11 of the first engagement body 8 engages with the second engagement body 13
At the same time, the second engaged body 17 engaged with the engaging teeth 15 and the engaged teeth 21 rotates together in the same direction.
On the other hand, when the knob turning member 17 is rotated in the opposite direction based on the next password, the engaging teeth 12 and the engaged teeth 18 of the first engaging body 8 are rotated.
The first engaged body 16 engaged via the pin rotates together with the knob rotating member 17, and as a result, as described above, the first and second
The notched portions 20 and 23 of the engaged members 16 and 17 are opposed to the upper end of the latch plate 25, and are in an unlocked state.

However, if the security code is now in a state where it can be publicly known to others, and therefore, when it is desired to convert the security code to an arbitrary new number, first, the male having the latch holder 26 fixed in the unlocked state. Loosen or remove screw 6. Next, pick the knob 31 of the latch holder 26 with your finger,
As shown in FIG. 4, the required amount is subtracted to the rear indicated by the arrow. Then, the first and second engaged members 16 and 17 are separated from the first and second engaging members 8 and 13 because they are integral with the latch holder 26 via the connecting member 32. Therefore, since the knob turning member 7 is free, if the knob turning member 7 is turned one or more times to the right, for example, and then an arbitrary number is matched, the first engaging member 8 and the first engaged member 16 are disengaged. When the knob turning member 8 is turned to the left and set to an arbitrary number, the unlocking connection position between the second engagement body 13 and the second engaged body 17 can be obtained. Can be. After the new password is set in this manner, the latch holder 26 is pushed into the outer cylinder member 1 again, and the outer cylinder portion of the outer cylinder member 1 is
1b and the latch holder 26 are fixed.

"Effects of the present invention" As is clear from the above description, the present invention has the following effects.

(1) Separate the plurality of engagement bodies provided in the outer cylinder member from the plurality of engagement bodies corresponding to the plurality of engagement bodies, and rotate the knob rotating member to set a desired desired password. be able to. Therefore, there is no need to replace the locking device even if the password is known to others.

(2) In the case of the embodiment in which the latch holder and the plurality of engaged members 16 and 17 are provided integrally, the male screw 6 is loosened, and the required amount of the latch holder is pulled from the outer cylinder member 1 by simply pulling the required amount. The engaged members 16 and 17 are clutched and separated from the first and second engaging members 8 and 13 on the rotating member 7 side. Therefore, the knob turning member 7 is immediately in a free state, and a new password can be easily set as it is.

(3) The number of constituent parts is small, so that the combination can be made easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention attached to a door, FIG. 2 is an explanatory view showing a locked state in an enlarged sectional view taken along the line II-II of FIG. 1, and FIG. FIG. 4 is an explanatory view showing an unlocked state based on FIG. 2, FIG. 4 is an explanatory view showing a state where the latch holder of the latch mechanism is pulled rearward and the turning member is free based on FIG. 3, and FIG. FIG. 2 is an exploded perspective view showing a main part of the invention. X: locking device, a: door, c: stopper piece, 1 ... outer cylinder member, 2, 9 ... fixing member, 6 ... male screw, 7 ... knob turning member, 8 ... 1 engaging body, 13 second engaging body, 14 engaged protruding piece, 16, 17 engaged body, 20, 23 notch, 24 latch mechanism, 25 latch Plate, 25a ... engaging part, 26 ... latch holder, 29 ... female screw, 30 ... engaging recess, 32 ... connecting body, 32c ... connecting arm.

Claims (2)

(57) [Claims] An outer cylinder member, a knob rotatable member rotatably fitted to the outer cylinder member, and an integrated member provided on the back side of the knob member and having a circumferential surface. 11 and a first engaging body 8 having a plurality of engaging teeth 12 formed therein, the first engaging body 8 being provided inside the outer cylindrical member so as to be rotated by a turning operation of a knob turning member, and having a first end on one end face. The engaging member has an engaged protruding piece 14 which engages with the hook, while a plurality of engaging teeth 15 are provided on the other end surface.
Is formed, and the outer cylinder is separated from the plurality of engaging bodies 8 and 13 when the knob turning member 7 is turned to convert it into an arbitrary password. The interior of the member,
In addition, the engaged teeth 18, 21 which engage with the engagement teeth 12 of the first engagement body 8 and the engagement teeth 15 of the second engagement body 13 on one end surface, respectively.
A plurality of first and second engaged bodies each having
16 and 17 and the notch portions 20 and 23 formed on the other end surfaces of the first and second engaged members, respectively, for pivotally supporting the latch plate 25 for unlocking and locking by engaging and disengaging, respectively; A locking device comprising a latch holder removably mounted on the outer cylinder member. 2. A latch holder and a plurality of first and second latch holders.
2. The locking device according to claim 1, wherein said engaged members 16 and 17 are integrally connected via a connecting body 32.