JPH0715979Y2 - Door locking device - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a door locking device, and particularly to an open end of a door of a mailbox or various lockers installed at the entrance of a condominium or a detached house. The present invention relates to a door locking device that can be attached.

"Prior art" Conventionally, letters and important documents are put in a mailbox, etc. Generally, a hole is formed in the lower part of the handle of the door, and the opening edge of the box body is formed to correspond to this hole. An inverted U-shaped lock arm of a padlock is passed through the hole and the opening / closing door cannot be forcibly opened.

By the way, even if a padlock can be attached to a mailbox, the padlock is not locked in a mailbox because it is generally troublesome in private life.
As a rule of thumb, it is rare to hang a padlock.

However, as a practical matter, not only letters but also important documents are put in a mailbox, so that it cannot be said that the opening and closing door is easily opened.

Therefore, in recent years, even when relatively important documents are put in a mailbox installed at the entrance of a condominium or a house, the opening / closing door cannot be easily opened, and a padlock is used if desired. There is a demand for a door locking device that can completely lock the open / close door.

Under such a demand, an embodiment has been proposed in Japanese Utility Model Laid-Open No. 62-160066.

In this embodiment, the tip of a shaft rod which is slidably provided in the outer cylinder member and is integral with the engaging piece when unlocked (when the padlock lock arm is not inserted in the locking hole). The part does not project into the lock hole for the lock arm formed in the knob part, but enters the inner cylinder.

Therefore, when the padlock lock arm is inserted into the lock hole, the engagement piece, which is constantly urged in the direction of the latch by the spring member, is prevented from moving to the lock arm (locking rod) via the shaft rod, and as a result, Rotation of the latch that engages the strike of the storage box is also blocked.

However, in the above structure, when unlocked (when the padlock lock arm is not inserted in the locking hole), the tip of the shaft rod that is integral with the engaging piece has the lock arm formed on the knob. Since it is based on the idea that it will not pop out into the lock hole, if the strike position of the storage box and the
If the position of the latch pivotally supported by the outer cylinder member does not completely match at a predetermined position, the tip of the shaft rod may pop out into the lock arm locking hole, or the tip of the shaft rod may Since it enters the inner cylinder side, as a result, in the former case, it becomes extremely difficult to insert the lock arm into the locking hole (in some cases, the insertion becomes impossible), while in the latter case, When locking (when the padlock lock arm is in the lock hole), the locking piece moves by the amount that it has entered the inner cylinder, so there is a drawback that the latch does not sufficiently engage with the strike. .

Further, when the so-called fine lock arm that does not correspond to the inner diameter of the lock hole is used as the lock arm of the padlock, the latter drawback described above also occurs.

[Problems to be Solved by the Invention] In view of the above-described conventional techniques, the present invention completely eliminates the strike position of the storage box and the position of the first latch provided on the outer cylinder member at a predetermined position. Even if they do not match, the lock arm of the padlock can be inserted into the lock hole of the outer cylinder member, and if the lock arm of the padlock does not correspond to the inner diameter of the lock hole, so-called fine lock arm is used Even if it is, the movement of the first latch engaging with the strike can be completely prevented as long as the second latch provided on the outer cylinder member moves, and further, the fitting body having the first latch as necessary. Is to obtain a door locking device that can be replaced arbitrarily.

"Means for Solving Problems" A door locking device according to the present invention includes an outer cylinder member 2 having a locking hole 6 in a front portion protruding from an outer wall of a door 1 and fixedly attached to the door 1. A fitting body 15 fixedly attached to a rear portion of the outer cylinder member penetrating the door, and a recess 18 of the fitting body.
By the spring force of the first spring 28 provided on the
Corresponding to the polarity of the first latch 25, which is always engaged so as to engage with the strike 27 of the storage box, while the fitting body 25a is slidably fitted into the recess 18. The contact head 31a is slidably provided in the outer cylinder member so that the contact head 31a always projects from the lock hole 6 by the spring force of the second spring 32 installed in the outer cylinder member 2, and the padlock 33 is provided in the lock hole. When the lock arm 34 is moved backward when the lock arm 34 is inserted, the leg portion 31c connected to the contact head portion 31a becomes the fitting body portion of the first latch 25.
It is characterized in that it comprises a second latch 31 which enters the lower end surface of 25a and completely blocks the movement of the first latch 25.

"Embodiment of the Invention" Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

In the embodiment shown in FIGS. 1 to 14, X is a locking device attached to the door 1 of the storage box Y such as a mail box and a locker.

That is, 2 is an outer cylinder member fixed to the open end of the door 1 of the storage box Y by a plurality of fixing tools 3. This outer cylinder member 2
In more detail, with reference to the case where it is attached to the door 1 as shown in FIG. 1 and FIG. 2, it can be divided into a front portion and a rear portion.

Reference numeral 4 denotes a flange that is in contact with the outer wall of the door 1, which is formed in a rectangular shape in the front part of the outer tubular member 2. The central part of the surface of the flange 4 is lightly pinched with fingers from one end to the other end. A protrusion 5 having a thickness that allows it to be provided is provided, and a locking hole 6 through which a lock arm of a padlock can be inserted is formed in the center of the protrusion 5. Reference numeral 7 denotes an outer tubular portion 7 formed at the rear portion of the outer tubular member 2 and penetrating the mounting hole 8 of the door 1. A plurality of outer tubular portions 7 are provided at the rear end portion of the outer tubular portion 7 as shown in FIGS. Through holes 9 for individual screws are formed, and large and small notches 10 and 11 facing each other from the middle to the rear end are provided. An outer surface rectangular fitting portion 12 that communicates with the notches 10 and 11 is formed inside the outer tubular portion 7, and also communicates with the locking hole 6 and the fitting portion 12 described above. Partial cross-shaped guide hole 13
Is provided.

Reference numeral 15 denotes a fitting body fitted into the fitting portion 12 of the outer cylinder member 2. The fitting body 15 penetrates from the front surface to the back surface at a position closer to the right end when the front view of FIG. 8 is used as a reference. The female screw 16 is formed, and a half-circumferential groove 17 is formed in the peripheral body portion on the side opposite to the position where the female screw 16 is formed. The front and back sides of this half-circumferential groove 17 are fitted in
Each of them communicates with a recess 18 formed in 15, while the left side does not communicate with the recess 18 as shown in FIG. A small protrusion 19 for a spring is provided on the bottom surface of the inner wall of the recess 18, and the upper and lower portions of the fitting body 15 are engaged with the notches 10 and 11 of the outer cylindrical portion described above, respectively. Mating protrusion 2
0 and 21 are formed, and a guide protrusion 22 is provided on the upper inner wall of the recess of the fitting body 15 facing each other.

Reference numeral 25 denotes a first member which is provided directly on the outer tube portion 7 of the outer tube member 2 or through another member, in this embodiment, the insertion body 15, and engages with and disengages a strike 27 provided on the inner wall 26 of the storage box Y. It is a latch. As shown in FIG. 1, the first latch 25 is fitted with a fitting body portion 25a which is fitted in the recess 18 of the fitting body 15 with a first spring 28 interposed therebetween and which is continuously provided with the fitting body portion 25a. The fitting body 2 is composed of a mountain-shaped engaging head 25b that constantly protrudes from the body 15.
As shown in FIG. 11, an engaging groove 29 that engages with the guide projection 22 of the inserting body 15 is formed in 5a, and a spring recess 30 into which one end of the first spring 28 is fitted is formed. It is provided.

31 is provided on the outer cylinder member so as to always project into the locking hole 6 via the second spring 32, and as shown in FIG.
When the lock arm 34 of is inserted into the locking hole 6, the outer cylinder portion 7
It is a second latch that retracts inward and prevents the above-mentioned movement of the first latch 25. The second latch 31 is shown in FIGS.
As shown in FIG. 12 and FIG. 12, the abutment head is fitted in the guide hole 13 of the outer cylinder member 2 and has a mountain-shaped cross section that constantly projects from the locking hole 6.
A fitting plate portion 31b having 31a and sliding in the guide hole 13, and two first latch movement preventing legs that respectively project from both side walls of the fitting plate portion 31b and extend rearward and face each other. 31
The fitting plate portion 31b is also formed with a spring recess 35 into which one end of the second spring 32 is fitted.

[Operation] When the door 1 is locked, the lock arm 34 of the padlock 33 is put into the locking hole 6 of the outer cylinder member 2 as shown in FIG. Then, the second latch 31 is guided by the guide hole 13 and retracts into the outer cylinder portion 7 against the spring force of the second spring 32, and as a result, the leg portions 31c and 31c of the second latch 31 are fitted. At the same time as it is fitted into the half-circumferential groove 17 of the body 15, it is located below the fitting body portion 25a of the first latch 25. Therefore, even if an attempt is made to open the door 1, the first latch 25 that engages with the strike 27 cannot be retracted into the outer cylinder portion 7, and therefore the door 1 cannot be opened. On the other hand, as soon as the padlock 33 is removed from the locking hole 6, the second latch 31 is automatically returned to the state shown in FIG. 1 by the second spring 32. Then, as shown in FIG. 14, when the door 1 is opened, the first latch 25 is guided by the guide projection 22 and moves back into the outer cylinder portion 7 against the spring force of the first spring 28. The door 1 can be opened freely.

"Different Embodiments" Next, different embodiments of the present invention shown in FIG. 15 will be described. In the description of the embodiment, the same parts as those of the embodiment of the present invention are designated by the same reference numerals, and the duplicated description will be omitted.

The main difference between the locking device X1 of the embodiment and the embodiment of the present invention is that a plurality of magnetic bodies are appropriately used in place of the first spring 28 of the first latch 25 that engages and disengages the strike 27 of the storage box. That is the point. That is, the engaging head portion 25b of the first latch 25A
So that it always projects from the outer cylinder portion 7 of the outer cylinder member 2A.
Magnetic members 40, 40 having the same polarity are provided in the end of the fitting body portion 25a of the latch 25A and in the recess 18A of the fitting body 15A.

Even with this structure, the same operation and effect as those of the embodiment of the present invention can be obtained.

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

(1) Since the present invention has the double structure of the latch, even if the position of the strike of the storage box and the position of the first latch provided on the outer cylinder member do not completely match at a predetermined position, A padlock lock arm can be inserted into the locking hole of the tubular member.

(2) Further, even when using a so-called fine lock arm that does not correspond to the inner diameter of the lock hole, the lock arm of the padlock engages with the strike as long as the second latch provided on the outer cylinder member moves. The movement of one latch can be completely prevented.

(3) Further, the fitting body 15 having the first latch 25 can be arbitrarily replaced as necessary, such as wear of the latch, failure of the spring, and replacement of the latch.

(4) When locking, it is not necessary to attach the padlock after pulling out the central shaft by pulling it from the rotating member, as in the case of the applicant previously proposed, and the padlock is inserted into the locking hole of the outer cylinder member. The door can be locked immediately by simply passing the lock arm. On the other hand, when the padlock is removed from the locking hole, the second latch is pushed by the spring and returns, and the locking device is automatically unlocked. Therefore, the operation of locking and unlocking is very easy.

[Brief description of drawings]

1 to 14 are explanatory views showing an embodiment of the present invention. Specifically, FIGS. 1 and 2 are schematic sectional views showing the internal structure, and FIG. 3 is based on FIG. Left side view, FIG. 4 is a right side view based on FIG. 2, FIGS. 5 to 7 are respective explanatory views of the outer cylinder member, and FIGS. 8 to 10 are respective explanatory views of the fitting body. , FIG. 11 is a perspective view of the first latch, FIG. 12 is a perspective view of the second latch, and FIG. 13 is an explanatory view of a state in which a padlock is attached.
FIG. 14 is an explanatory diagram when the door is opened and closed, and FIG. 15 is an explanatory diagram showing a different embodiment of the present invention. X, X1 ... Locking device, Y ... Storage box, 1 ... Door, 2, 2A
…… Outer cylinder member, 6 …… Locking hole, 7, 7A …… Outer cylinder part, 13…
… Guide hole, 15, 15A… Fitting body, 17 …… Half-circumferential groove, 18…
… Recess, 25 …… First latch, 25a …… Mating body, 25b ……
Engaging head, 27 …… Strike, 31 …… Second latch, 31a
…… Abutment head, 31b …… Mating plate, 31c …… Legs, 33 ……
Padlock, 34 …… Lock arm, 40,40 …… Magnetic material.

Claims (1)

[Scope of utility model registration request] 1. A lock hole 6 is formed in a front portion of the door 1 projecting from the outer wall of the door 1.
And an outer cylinder member 2 fixedly attached to the door 1,
The fit 15 fixedly attached to the rear portion of the outer cylinder member penetrating the door and the spring force of the first spring 28 provided in the recess 18 of the fit or the polarity of the magnetic body 40. Correspondingly, the always engaging head portion 25b projects so as to engage with the strike 27 of the storage box, while the fitting body portion 25a slides into the recess 18 and the first latch 25, and the outer cylinder. The abutment head 31a is slidably provided in the outer cylinder member so that the contact head 31a always projects from the locking hole 6 by the spring force of the second spring 32 incorporated in the member 2, and the lock arm of the padlock 33 is inserted in the locking hole.
When retracted when the 34 is inserted, the leg portion 31c, which is continuous with the contact head portion 31a, enters the lower end surface of the fitting body portion 25a of the first latch 25 and completely prevents the movement of the first latch 25. Second
Door locking device consisting of latch 31.