JP2011089274A - Lock device for mailbox - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a padlock easily locked to/unlocked from a movable pivot. <P>SOLUTION: This lock device for the mailbox includes an outer cylindrical body which is fixed to a free end of a door of the mailbox, a latch mechanism which is provided via a supporting body at the back end of the outer cylindrical body and equipped with a latch plate for being engaged with/disengaged from a stopper piece of the mailbox, a latch regulating piece which is directly or indirectly provided in the outer cylindrical body to be capable of regulating the latch plate, and the movable pivot which is provided in the outer cylindrical body and which has a lock hole for a lock arm of the lock. The movable pivot is rotatably engaged with the outer cylindrical body so that the lock hole can be constantly exposed from a front surface of the outer cylindrical body. When an outer end of its knob is pinched and rotatively operated, the lock hole is positionally displaced in a circumferential direction as-is in a position to be engaged with the outer cylindrical body. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mail box box locking device installed at an entrance of a condominium or a detached house.

  Patent Document 1 and Patent Document 2 describe that “an outer cylinder fixed to the free end of the door of the mailbox and a stopper provided in the rear end of the outer cylinder via a support and in the mailbox. A latch mechanism having a latch plate that engages with and disengages from the piece, a latch restricting piece provided directly or indirectly on the outer cylinder so as to be able to regulate the latch plate, and provided on the outer cylinder. In addition, there is described a "box lock device comprising a movable center shaft or a movable knob member having a lock hole for a lock arm of a padlock".

  The problem with the locking device of Patent Document 1 is that the lock center (14) of the padlock (20) in a state where the movable central shaft (14) is pulled out of the rotary member (8) against the spring force of the spring member (17). 21) must pass through the locking hole (15) of the movable middle shaft (14), so it is not easy to make this locked state. Further, since the movable middle shaft (14) does not rotate, the padlock cannot be easily attached or removed. Furthermore, in order to obtain a temporary locking state, the knob turning member (8) is provided separately from the outer cylindrical body (1) and the movable middle shaft (14), so that the number of parts increases (reference numerals are those of the publication) ).

  Further, the problem with the locking device of Patent Document 2 is that the lock hole is always located in the outer cylinder, and therefore, a through hole that can communicate with the lock hole must be formed in the outer cylinder. Since it is necessary to pass the lock arm of the padlock through the through hole and the lock hole only when the lock hole is positioned in the up-and-down direction communicating with the through hole, it is troublesome to attach or remove the padlock and the padlock ( As is well known, all padlock keyholes face down. Moreover, since the locking device of patent document 2 aims at making this locked state using a padlock in the temporary locking state which closed the door similarly to the locking device of patent document 1, it is the structure of a locking device. Becomes complicated.

No. 6-8221 JP 2009-91728 A

  The intended object of the present invention is that it is easy to lock and remove the lock from the movable shaft. The second purpose is to eliminate the temporary locking state and immediately enter the locked state. In other words, the configuration of the lock device is simplified. The third object is that the parts can be combined in a short time by providing the movable middle shaft with a plurality of functions.

  The lock device for the mailbox according to the present invention includes an outer cylinder fixed to the free end of the door of the mailbox, and a stopper piece of the mailbox that is provided at the rear end of the outer cylinder via a support. A latch mechanism having a latch plate to be engaged and disengaged, a latch restricting piece provided directly or indirectly on the outer cylinder so as to be able to regulate the latch plate, and a lock arm of the lock provided on the outer cylinder In the mailbox receiving box locking device comprising a movable center shaft having a lock hole for the latch, the latch restricting piece is mounted on the inner end portion of the movable middle shaft and the front end portion of the support body so as to be movable in the axial direction. Further, when the movable middle shaft is rotatably engaged with the outer cylinder so that the lock hole is always exposed from the front surface of the outer cylinder, the outer end of the knob is picked and rotated, Is changed in the circumferential direction at the position where it engages with the outer cylinder. To.

  In the above configuration, the movable middle shaft includes an inner end shaft portion that engages with an engagement hole formed in the outer cylindrical body, a knob outer end portion that is connected to the inner end shaft portion, and the knob outer end portion. A lock hole in the radial direction formed between the inner end shaft portion and the inner end shaft portion, and is formed in the axial direction from the inner end surface of the inner end shaft portion so as to communicate with the lock hole, and the latch restricting piece And a guide hole that allows movement in the direction of the lock hole. In addition, when the lock arm of the lock is locked through the lock hole of the movable middle shaft, the lock device immediately changes from the non-temporary lock state with the door closed to the present lock state.

(A) It is easy to lock and remove the lock from the movable shaft. FIG. 9 shows an example of locking the padlock Z. When the padlock Z is attached to the movable middle shaft 21, as shown in FIG. 8, the movable middle shaft 21 is freely rotated, and the padlock Z is viewed from the most preferred direction. The lock arm 31 can be passed through the lock hole 24 of the movable middle shaft 21. FIG. 10 shows an example of releasing the lock of the padlock Z. However, the movable shaft 21 can be rotated to an arbitrary position, and then the key K can be inserted into the keyhole while looking at the keyhole at the bottom of the padlock Z. it can.
(B) The invention according to claim 2 and claim 3 can eliminate the temporary lock state and immediately enter the lock state. Therefore, the configuration of the lock device can be simplified.
(C) In the invention according to claim 2, the parts can be combined in a short time by providing the movable middle shaft with a plurality of functions.

1 to 10 are explanatory views showing an example of the present invention.
Schematic cross-sectional explanatory drawing showing the implementation environment (non-temporary locked state with the door closed). FIG. 3 is an explanatory view of the locked state in which the lock arm of the padlock is locked through the lock hole of the movable middle shaft in the non-temporary locked state with the door of FIG. 1 closed. Schematic explanatory drawing which shows the action | operation of a latch plate and a latch control piece when closing a door. The schematic explanatory drawing which shows the action | operation of a latch plate and a latch control piece when opening a door. The schematic perspective view which shows this locked state. The disassembled perspective view of a structural member. Explanatory drawing of a structural member. Explanatory drawing that the position of the lock hole freely displaces when the movable middle shaft rotates. Schematic explanatory drawing which shows an example which locks a padlock. Schematic explanatory drawing which shows an example which removes a padlock.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. FIG. 1 shows a non-temporary locked state with the door closed. When the door is closed, as shown in FIG. 2, for example, a lock arm 31 of a padlock Z as an example of a lock is passed through a lock hole 24 of the movable center shaft 21, and the lock arm 31 is engaged with the padlock Z. When locked in the hole, the locking device X immediately enters the locked state.

  Now, X is a lock device attached to the door a of the mail box Y installed in the entrance of a condominium or a detached house. Similarly to Patent Document 1 and Patent Document 2, this locking device X also has an outer cylindrical body 1 fixed to the free end of the door a of the mail box Y, and a support 5 at the rear end of the outer cylindrical body. And a latch mechanism 4 provided with a latch plate 6 that engages and disengages with a stopper piece e of the mail box Y, and the outer cylinder 1 directly or indirectly so that the latch plate 6 can be regulated. The latch restricting piece 11 is provided, and a movable central shaft 21 provided in the outer cylinder 1 and having a lock hole 24 for the lock arm 31 of the padlock Z.

  First, reference numeral 1 denotes an outer cylinder that is fixed to the open end of the door a of the mailbox Y with a fixing tool b such as a screw. The outer cylinder 1 has an engagement hole 2 formed in a flange-shaped tip 1a. In addition, an outer cylinder portion 1b penetrating through an attachment hole formed in the door a is formed on the rear end portion side continuous with the tip portion 1a. A plurality of screw holes c for the fasteners b are formed in the distal end portion 1a from the back side toward the distal end surface. The engagement hole 2 is a shaft hole having a stepped cross section, and an inner end 22 of a movable middle shaft 21 described later is engaged with the engagement hole 2 having the function of the shaft hole in a locked state. Further, a fitting hole 3 having a diameter larger than that of the engagement hole 2 is formed in communication with the outer cylindrical portion 1b, and a square tip portion 5b of a support body 5 to be described later is fitted into the fitting hole 3. .

  Next, reference numeral 4 denotes a latch mechanism attached via a support body 5 provided integrally with the outer cylinder portion 1b of the outer cylinder body 1. The latch mechanism 4 is an inner wall of the box body d of the mail box Y. A sickle-shaped latch plate 6 having an arcuate first engaging portion 6a that engages and disengages with a stopper piece e that is fixedly protruded from the stopper plate e. The latch plate 6 is pivotally supported by a pivot pin (horizontal axis) 7 at a substantially central portion of the vertical plate-like base portion. The latch plate 6 has a second engagement portion 6b that engages with a rear end portion 11a of a later-described latch restricting piece 11 at an end portion of the vertical plate-like base portion. Further, a pivot pin shaft hole 6c is formed at a substantially central portion of the vertical plate-like base. Further, as shown in FIG. 3, the arc-shaped outer peripheral surface of the arc-shaped first engaging portion 6a is in sliding contact with the end of the stopper piece e of the box d, but the arc-shaped inner peripheral surface corresponding to the opposite side of the arc-shaped outer peripheral surface. A spring end support projection 6d that supports one end of the latch spring 8 is formed on the surface.

  Since the internal structure of the support 5 is a well-known matter (for example, the column of Patent Document 1), it will be briefly described. For example, in the internal space of the rear end portion 5a, a spring end support portion 9 having a recessed shape in cross section for supporting the other end portion of the latch spring 8 is formed. Further, a guide space portion 10 that communicates with the internal space is formed in the square front end portion 5b that is connected to the rear end portion 5a, and a pistol-shaped latch restricting piece 11 moves forward and backward in the guide space portion 10. Built in freely. In addition, the guide space part 10 of a present Example is also a notch part for latch plate escape which the 2nd engaging part 6b of the latch plate 6 can enter.

  Next, the movable middle shaft 21 which is one of the features of the present invention will be described. The movable middle shaft 21 includes an inner end shaft portion 22 that engages with the stepped engagement hole 2 of the flange-shaped tip portion 1 a formed in the outer cylindrical body 1, and a knob outer portion that is continuous with the inner end shaft portion in the axial direction. An end portion 23, a radial lock hole 24 formed between the knob outer end portion 23 and the inner end shaft portion 22, and the inner end shaft portion 22 so as to communicate with the lock hole 24. And a guide hole 25 that is formed in an off-axis direction from the inner end face 22 a and allows the latch restricting piece 11 to move in the direction of the lock hole 24. The movable middle shaft 21 is locked to the stepped engagement hole 2 of the outer cylindrical body 1 via the inner end shaft portion 22 so that the lock hole 24 is always exposed from the front surface of the outer cylindrical body 1. When the outer end 23 of the knob is pinched with a finger and rotated, the lock hole 24 is displaced in the circumferential direction at the position where it engages with the outer cylinder 1.

  In addition, when the inner end shaft portion 22 is engaged with the stepped engagement hole 2 of the flange-like distal end portion 1a of the outer cylindrical body 1, for example, as shown in FIG. Since the shaft portion 22 is locked in the stepped engagement hole 2, the movable middle shaft 21 cannot be pulled out to the front side of the operator, and the inner end surface 22a of the inner end shaft portion 22 is Since it contacts the tip surface of the square tip portion 5b of the support body 5 fitted in the fitting hole 3 of the outer cylinder portion 1b of the outer cylinder body 1, the movable middle shaft 21 cannot be pushed in, and the engagement position thereof is reached. In addition, the lock hole 24 simply rotates on the spot at a position where it is always exposed from the outer cylinder 1. This is different from the central axis of Patent Document 1.

  Next, the latch restricting piece 11 is incorporated in the distal end portion 5 b of the support 5 so as to be movable in the axial direction of the movable middle shaft 21, and by the spring force of the return spring 12 built in the support 5. The rear end portion 11 a is always in contact with the other end portion (second engaging portion) 6 b of the latch plate 6 that is pivotally supported by the support body 5.

  In other words, the latch restricting piece 11 is always urged in the direction of the latch restricting piece 11 by the spring force of the return spring 12, so that the rod-like tip end portion 11 b provided continuously with the rear end portion 11 a is locked to the movable center shaft 21. It is slidably fitted into the guide hole 25 of the movable middle shaft 21 so as to face the hole 24. In this embodiment, the latch restricting piece 11 is formed in a “pistol shape” as a whole, and its rear end portion 11a abuts against the other end portion 6b of the latch plate 6, so that, for example, when the door is closed, the latch plate 6 is shown in FIG. As shown in FIG.

  Here, referring to FIGS. 1 to 4, the locking device X of the present invention is always in a non-temporarily locked state unless locked by the lock arm 31 of the padlock Z, and the padlock Z is attached to the movable shaft 21. Explain that the locked state is immediately entered.

  FIG. 1 shows a non-temporary locked state with the door closed. Since the locking device X of the present invention does not include a mechanism for making the “temporary locking state” as described in Patent Document 1 and Patent Document 2, as shown in FIG. 2, the non-temporary locking state in which the door a is closed. In FIG. 1, when the lock arm 31 of the padlock Z is locked through the lock hole 24 of the movable middle shaft 21, the locked state is immediately entered.

  That is, even if it is attempted to open the door a in the locked state of FIG. 2, since the latch restricting piece 11 has the lock arm 31, the rod-shaped tip portion 11 b collides with the lock arm 31 and the required amount in the off-axis direction. As a result, the latch plate 6 restricted by the rear end portion 11a of the latch restricting piece 11 cannot rotate about the pivot pin 7 as a fulcrum.

  On the other hand, FIG. 1 shows a non-temporarily locked state in which the latch restricting piece 11 can freely slide in the off-axis direction (the lock hole 24). Therefore, when the door a is closed as shown in FIG. The restricting piece 11 protrudes into the lock hole 24 when the rear end portion 11 a is pressed by the other end portion (second engaging portion) 6 b of the latch plate 6. At this time, the latch plate 6 rotates about the pivot pin 7 as a fulcrum and counterclockwise as shown by the arrow against the spring force of the latch spring 8, so that the latch restricting piece 11 moves in the off-axis direction. To do. This is the same when the door a is opened as shown in FIG. However, as apparent from a comparison between FIG. 3 and FIG. 4, the engagement position of the latch plate 6 with respect to the stopper piece e in the mail box Y is different.

  In this embodiment, the latch restricting piece 11 is formed in a “pistol shape” as a whole, while the latch plate 6 engaged with the rear end portion 11a of the latch restricting piece 11 is formed in a sickle shape. The shape of can be arbitrarily changed in design. For example, when the shape of the other end portion (second engagement portion) 6b with respect to the rear end portion 11a of the latch plate 6 is changed, the shape of the engagement portion of the rear end portion 11a of the latch restricting piece 11 is naturally changed. Further, the shape of one end (first engagement portion) 6a of the latch plate 6 with respect to the stopper piece e of the box d can also be arbitrarily changed according to the shape of the end of the stopper piece e. Furthermore, although not shown in particular, a cap that can be freely fitted and detached can be attached to the knob outer end 23 of the movable middle shaft 21.

  In this embodiment, a padlock is used as an example of the lock. However, the lock includes a padlock, a variable character alignment lock, a lock arm such as a chain lock, or the like (chain). Is also included.

  The present invention is used in the fields of locks and joinery.

X: Locking device, Y: Mail box, Z: Padlock, a ... Door, d ... Box, e ... Stopper piece, 1 ... Outer cylinder, 1a ... Flange-shaped tip, 1b ... Outer cylinder, 2 ... Engagement Fitting hole, 3 ... fitting hole, 4 ... latch mechanism, 5 ... support, 5a ... rear end portion, 5b ... tip portion, 6 ... latch plate, 7 ... pivot pin, 8 ... latch spring, 10 ... guide space portion , 11 ... latch regulating piece, 12 ... return spring, 21 ... movable middle shaft, 22 ... inner end shaft part, 23 ... knob outer end part, 24 ... lock hole, 25 ... guide hole, 31 ... lock arm.

Claims (3)

Latch mechanism comprising an outer cylinder fixed to the free end of the door of the mailbox and a latch plate provided at the rear end of the outer cylinder via a support and engaged with and disengaged from the stopper piece of the mailbox A latch restricting piece provided directly or indirectly on the outer cylinder so as to restrict the latch plate, and a movable middle shaft provided on the outer cylinder and having a lock hole for a lock arm of the lock. In the mail box locking device, the latch restricting piece is mounted on the inner end portion of the movable middle shaft and the front end portion of the support body so as to be movable in the axial direction, and the movable middle shaft has the lock hole. Is engaged with the outer cylinder so as to be always exposed from the front surface of the outer cylinder, and when the outer end of the knob is picked and rotated, the lock hole is engaged with the outer cylinder. A mail box lock device that is displaced in the circumferential direction. The movable middle shaft according to claim 1, wherein the movable middle shaft is engaged with an inner end shaft portion that engages with an engagement hole formed in the outer cylindrical body, a knob outer end portion that is connected to the inner end shaft portion, and the knob outer end. And a radial lock hole formed between the inner end shaft portion and the inner end shaft portion, and is formed in an off-axis direction from the inner end surface of the inner end shaft portion so as to communicate with the lock hole, and is latched A mail box box locking device having a guide hole that allows movement of the restricting piece toward the lock hole. 3. The mail receiving box according to claim 1, wherein when the lock arm of the lock is locked through the lock hole of the movable middle shaft, the lock device immediately enters the locked state from the non-temporary locked state with the door closed. Locking device.

Images