JPH0429837Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a mailbox installed in an apartment or the like, and particularly relates to a mailbox equipped with a locking device.

[Conventional technology]

Recently, mailboxes in office buildings, condominiums, etc. are often equipped with locking devices to prevent mail theft, and locking devices eliminate the need to carry key plates. Most commonly used are dial locks, which can be easily unlocked by simply aligning the head with a predetermined unlock code. For mailboxes equipped with such a dial lock, the user is taught the preset rotation angle of the head as an unlock code using a numerical value attached to the head, and the user simply The lock can be easily unlocked by simply matching the unlock code to a predetermined position.

[Problem that the invention attempts to solve]

However, with conventional mailboxes like this, the unlock code is determined in advance when the locking device is manufactured and cannot be changed freely, so if, for example, there is a change in the number of residents in the apartment, all the locking devices must be changed. They had the disadvantage that they either needed to be replaced or became unusable because residents forgot the unlock code. This invention was made to eliminate these drawbacks, and it was designed to make it easy to change the unlock code when necessary, and to easily check the number if you forget it. The purpose is to provide a mailbox with a built-in design.

[Means to solve the problem]

According to the present invention, the above object is achieved by attaching a dial lock C to the lid B that closes the opening of the mailbox housing A, and rotating the head 1 of the dial lock C to place the lid in the unlocked position. This is achieved by providing a mailbox in which the unlocking position of the dial lock C can be changed as appropriate, and the unlocking position can be identified in the mailbox in which the dial lock C can be opened.

【Example】

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. A dial lock C used in the present invention is shown in FIGS. 1 and 2, and 2 is a flange 21 and a threaded portion 22 for fixing it to the mailbox housing A.
1 is formed on the outer periphery, 1 is 1 on the front side.
0 to 0 are arranged on the circumference, ten click stop positions are formed in the circumferential direction by a click device (not shown), and the head is rotatably attached to the casing 2; 4 is an inner rotor part which is rotatably inserted into the outer rotor part 3, and 5 is a latch unit which is attached to the end of the casing 2. Yes, first
As shown in the figure, when the latch receiver D collides with the inclined surface 510 of the latch plate 51 of the latch unit 5, the force causes the latch plate 51 to collide with the latch plate 51.
descends against the biasing force of the compression spring 52,
A locking portion 51 vertical to the locking hole E of the latch receiver D
1 is locked and becomes a closed state, and the lid body B cannot be opened in the locked state, and
In the unlocked state, as shown in FIG.
1, the latch plate 51 can be removed from the latch receiver D. In addition, in the casing 2 of this dial lock C,
As shown in FIG. 2, an opening 23 through which the latch plate 51 moves forward and backward is formed, and this opening 23
3 is extended forward, an identification opening 8 is formed, and as will be described later, even after the unlocking code is changed, the unlocking slits 6 and 7 of the inner rotor section 4 and the outer rotor section 3 remain in the unlocked position. It is possible to know the unlock code by identifying whether it is present or not. Changing the unlocking code for this dial lock C is for the first and second outer rotor parts 31 and 32 that constitute the outer rotor part 3, the first and second inner rotor parts 41 and 32 that constitute the inner rotor part 4, As shown in FIG. is formed by protruding a locking protrusion 311 located within the rotation locus of the head 1, and after the head 1 is rotated at an appropriate angle and the rotation protrusion 11 of the head 1 is brought into contact with the locking protrusion 311. is configured to rotate following the rotation of the head 1. On the other hand, the terminal portion of the first outer rotor 31 is provided with unevenness 310, 3 having the same number of teeth as the number of symbols written on the head 1 (10 in this embodiment).
10... are formed at equal intervals in the circumferential direction, and the unevenness 32 of the second outer rotor 32 is formed in the unevenness 310.
0, 320... by engaging the second outer rotor 32 with this first outer rotor 3.
1, and the unlocking slit 6 formed at the end of the second outer rotor 32 can be rotated to a predetermined unlocking position. Further, the first inner rotor 41 constituting the inner rotor section 4 has a head portion 1 as shown in FIG.
The head 1 is fixed to the back surface of the head 1 with a screw 12 and rotatably mounted inside the first outer rotor 31, so that the head 1 always rotates following the
11 to restrict the rearward movement of the first outer rotor 31, and also form engagement unevenness 410, 410... similar to the first outer rotor 31 described above at the terminal portion. By engaging the projections and depressions 420 of the second inner rotor 42, the unlocking slit 7 of the second inner rotor can be rotated to a predetermined unlocking position (see FIG. 5). As shown in FIG.
and a plate-shaped latch plate 51 which is urged upward by a compression spring 52 and is prevented from coming out by a hinge pin 54 inserted into a long hole 513.As shown in FIG. After fitting the bottom wall 530 of the casing 2 into the fitting slit 25 of the casing 2 from the rear end of the casing 2, the side wall of the head 90 is fitted to the periphery 240 of the long fixing hole 24 of the casing 2. The front side edge 514 of the latch plate 51 is installed and fixed in sliding contact with the terminal edges of the second inner rotor 42 and the second outer rotor 32 by the countersunk screws 9 brought into contact, and the unlocking code is Upon change,
After loosening the countersunk screw 9, the latch holder 53 is moved rearward by pushing the tip 541 of the hinge pin 54 against the biasing force of the compression spring 540 to release the lock from the locking hole 26 of the casing 2. is made possible. Therefore, in this embodiment, when changing the unlock code, first align the head 1 with the unlock code and unlock the unlock slits 6 and 7 of the second inner rotor 42 and outer rotor 32. After loosening the countersunk screw 9 in the locked position, rotate the latch plate 51 backwards to release the stopper part 512.
are fitted into the unlocking slits 6 and 7, the tip end 541 of the hinge pin 54 is pushed into the casing 2, and then the latch unit 5 is pulled out rearward as shown in FIG. In this way, the second inner rotor 42 and the second outer rotor 32 are pushed rearward by the compression spring 33 interposed between the first inner rotor 41 and the second inner rotor 42, and the second inner rotor 42 and the second outer rotor 32 are pushed out rearward. Unevenness 31
0,320 and 410,420 are unlocked. After that, the head 1 is rotated in one direction for one or more rotations, the first outer rotor 31 is rotated following the first inner rotor 41, and then the head 1 is rotated again in the opposite direction within one rotation. If the latch holder 53 is fixed in the lower position, a new unlock code will be generated based on the number of head 1 specified by the first rotation and the number of head 1 specified by the subsequent rotation. will be formed. Furthermore, the unlock code set in this way can be obtained by removing the dial lock C from the mailbox housing A, or by installing it so that the identification port 8 faces upward inside the lid as shown in Fig. 1. After opening the lid B, it can be easily identified by checking the position of the unlocking slits 6 and 7 through the identification opening 8 using a mirror or the like while it is attached to the mailbox housing A. .

[Effect of the idea]

As is clear from the above explanation, according to the mailbox according to the present invention, the unlock code of the dial lock can be changed as appropriate, so that the mailbox can be unlocked if, for example, the resident of the apartment changes. Since it can be used by a new resident simply by changing the code, there is no need to replace the entire locking device as in the past, and its utility value is great. Furthermore, once the locking code has been changed, it can be identified when removed from the mailbox housing or by using a mirror or the like, making management extremely easy.

[Brief explanation of drawings]

Figure 1a is an overall perspective explanatory diagram showing the mailbox according to the present invention, Figure 1b is an explanatory diagram showing the locked state of the dial lock, Figure 2 is a sectional view of the dial lock, and Figure 3 is the latch plate of the dial lock. FIG. 4 is a cross-sectional view taken along the - line in FIG. 2, FIG. 5 is a perspective explanatory view showing the rotor part, FIG. FIG. 6b is a plan view of the dial lock, and FIG. 7 is an explanatory diagram showing a method of changing the unlock code. A... Mailbox housing, B... Lid body, C... Dial lock, 1... Head.

Claims (1)

[Scope of Claim for Utility Model Registration] A mailbox in which a combination lock is attached to the opening of a mailbox housing, wherein the dial lock includes: a casing fixed to the mailbox housing; a head rotatably inserted into the casing; an outer rotor part provided with an unlocking slit at a rear end and rotatable within the casing; an inner rotor part provided with an unlocking slit at a rear end and rotatable within the outer rotor part; and the outer rotor part. A latch unit includes a latch plate that enters the unlocking slit and becomes unlocked when the unlocking slits of the inner rotor part match, and the outer rotor part and the inner rotor part are arranged at a boundary part. The rotor is divided into a first and a second rotor that are connected in the longitudinal direction by engaging the concave and convex portions, and the first outer rotor located on the head side rotates with respect to the head with a predetermined play angle. the first inner rotor is fixed to the head, and the latch unit is movable rearwardly a distance sufficient to disengage the rotors; is a mailbox characterized by having an identification opening through which the matching state of the unlocking slits can be visually observed.