JPH036775Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a housing door locking device suitable for implementation on the door of, for example, a public telephone.

[Conventional technology]

Conventionally, this type of locking device for a case door has been constructed as shown in Fig. 1.This will be briefly explained based on the figure.In the figure, 1 is a case of a public telephone, etc. An opening 2 is provided in the opening 2. Reference numeral 3 denotes a door covering the opening 2, which has a coin slot 4 at the top and is attached at one end to the side end of the housing 1 so as to be openable and closable. Reference numeral 5 denotes a locking plate having a plurality of hooks 6, which is slidably disposed inside the housing 1. Reference numeral 7 denotes a cylinder-shaped lock provided in the housing 1, which is configured to be rotated by a key (not shown) so that the locking plate 5 can move up and down. Reference numeral 8 designates locking plate receiving plates with which the hook portions 6 are engaged by the lock 7, and the same number of locking plate receiving plates as the hook portions 6 are provided at the portions of the door 3 corresponding to the hook portions 6.

[Problem that the invention attempts to solve]

However, in a conventional device having a locking plate 5 in which a plurality of hooks 6 are integrally provided, the processing accuracy of the engaging surface of the hooks 6 and the mounting position of the locking plate 5 and the locking plate receiving plate 8 are limited. Therefore, even if one hook portion 6 engages with the locking plate receiving plate 8, the other hook portion 6 does not engage with the locking plate receiving plate 8. Locking devices are often manufactured that are non-engaging. As a result, the door 3 is locked to the housing 1 without sufficient engagement between the engaging surface of the hook portion 6 and the locking plate receiving plate 8, and a gap is created between these members. There is a risk that dust or water may enter the door 3, or that the door 3 may be ripped open with a metal tool such as a screwdriver.

Therefore, in order to ensure the engagement between the hook portion 6 and the locking plate receiving plate 8, the locking plate 5
It is also conceivable to perform additional machining by bending or cutting the locking plate receiving plate 8, but in this case, there is a problem that a great deal of time is spent on the adjustment work and the manufacturing cost increases.

The present invention was developed in view of these circumstances, and provides a locking device for the housing door that not only allows a secure locked state with no gap between the door and the housing, but also eliminates the need for adjustment work. It is something to do.

[Means for solving problems]

The locking device for a housing door according to the present invention includes a locking plate that has a plurality of engaging hooks and is provided to be slidable up and down with respect to the housing, and is engaged with the locking plate. The hook is provided so that it can move up and down.

[Effect]

In the present invention, the engaging surface of the engaging hook portion and the locking piece can be reliably engaged by key operation.

〔Example〕

2nd and 3rd figures A and B show the locking device for the housing door according to the present invention.
The same members as in the figures are given the same reference numerals, and detailed explanations are omitted. In the same figure, what is indicated by the reference numeral 11 is a locking plate that is slidably provided in the vertical direction with respect to the housing 1, and the upper and lower ends are formed with different plate widths, so that the locking plate is provided between the upper and lower ends. A stepped portion 12 is provided as a fall prevention portion for regulating the position of an engaging hook portion, which will be described later. Further, the locking plate 11 is provided with a protrusion 13 extending laterally below the step 12 and a cutout groove 14 having a groove wall surface 14a continuous to the lower end surface 13a of the protrusion 13. Reference numeral 15 denotes an engagement hook portion provided to be movable in the vertical direction with respect to the upper end of the locking plate 11, and a tapered engagement surface 16 is formed at a portion facing the side end surface 11a of the locking plate 11. ing. Reference numeral 17 designates an engaging hook portion on which an engaging surface 18 is formed similarly to the engaging hook portion 15, and is located below the engaging hook portion 15 and is integrally provided at the lower end of the locking plate 11. Reference numeral 19 denotes a locking piece with which the respective engaging surfaces 16 and 18 are respectively engaged, which is formed into a substantially U-shape as a whole and is fixed to the door 3. 20 is a cylinder-shaped lock similar to the lock 7, and includes a rotating shaft 21 inserted into a cylinder (not shown) and disposed below the lower end surface 13a of the projection 13, and a tip fixed to the rotating shaft 21. is provided with a rotary engagement piece 22 whose lower end surface 13a or abdomen can engage with the groove wall surface 14a of the notched groove 14. and lock 20
The locking plate 11 is moved up and down by a key operation (not shown), and the engaging hook portions 15, 17 are moved.
The locking piece 19 is configured to be able to be engaged with the locking piece 19 and released from the engagement.

Therefore, when the key is inserted into the keyhole and the rotation shaft 21 is rotated clockwise, the rotation engagement piece 22 rotates in the same direction and the locking plate 11 slides downward. At this time, the engagement surface 1 of the lower engagement hook portion 17
8 is in point contact with and engaged with the locking piece 19. On the other hand, since the upper engaging hook portion 15 is not limited in the amount of movement of the locking plate 11, it descends due to its own weight, and this engaging surface 16 also engages the locking piece 1.
9 is in point contact and engaged. In this way, the locked state of the door 3 and the housing 1 is obtained.

Furthermore, when the rotating shaft 21 is rotated counterclockwise from this state, the locking plate 11 slides upward, and the engagement between the engagement surface 18 of the engagement hook portion 17 and the locking snap piece 19 is released. Ru. On the other hand, the engagement hook portion 15 is pushed up by the locking plate 11, and the engagement between the engagement surface 16 and the locking piece 19 is also released, making it possible to obtain the unlocked state between the door 3 and the housing 1. can.

In this embodiment, the engaging hook portion 15 which is not limited in the amount of movement of the locking plate 11 is shown as having a structure that moves up and down with respect to the locking plate 11, but FIG. As shown, even if the locking plate 11 is provided with a pin 23 and an engaging hook portion 24 rotatably supported by the pin 23, the same effects as in the embodiment can be obtained. In this case, 25 is the step portion 12
This is a stopper that has the same function as .

In addition, although the tapered engagement surfaces 16 and 18 are formed on both the engagement hooks 15 and 17, respectively, the engagement surfaces 16 and 18 of both the engagement hooks 15 and 17 are movable up and down with respect to the locking plate 11. Engagement hook portion 15 provided
There is no problem even if the tapered engagement surface 16 is formed only on the surface.

Further, in this embodiment, the case where the invention is applied to the door 3 of the housing 1 of a public telephone is shown, but the present invention is not limited to this, and can be similarly applied to the door of various equipment such as a vending machine. Of course, it can be implemented.

[Effect of idea]

As explained above, according to the present invention, the locking plate is provided with a plurality of engaging hooks and is provided to be slidable up and down with respect to the housing, and at least one of the engaging hooks is engaged with the locking plate. The surface is formed into a tapered shape, the engaging hook portion is provided to be movable up and down with respect to the locking plate, and the locking plate is provided with a fall prevention portion that regulates the position of the engaging hook portion. The engagement surface of the engagement hook portion and the locking piece can be reliably engaged by key operation. Therefore, if the door does not rattle, a secure locked state can be obtained without creating a gap between the door and the housing. In addition, since the adjustment work required in the past to ensure the engagement with the hook or locking plate receiving plate is no longer required, it is possible to reduce manufacturing costs, etc. The effect is extremely large.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional case door locking device, Fig. 2 is a perspective view showing main parts of the case door locking device according to the present invention, and Figs. 3A and B are the same case. FIGS. 4A and 4B are a front view and a side view showing a locking device for a body door, and FIGS. 4A and 4B are a perspective view and a front view showing another embodiment. 1... Housing, 3... Door, 11... Locking plate, 15... Engaging hook portion, 16... Engaging surface, 1
7... Engaging hook portion, 18... Engaging surface, 19... Locking piece, 20... Lock.

Claims (1)

[Scope of utility model registration request] A locking plate that has a plurality of engaging hooks and is slidable up and down relative to the casing; a locking piece that is fixed to the door and engages each of the engaging hooks; a lock that moves the locking plate upward to release the engagement between the engagement hook and the locking piece; The engaging surface with the locking piece is formed into a tapered shape, and the engaging hook portion is provided to be movable up and down with respect to the locking plate, and a fall prevention portion is provided to restrict the position of the engaging hook portion. A locking device for a housing door, characterized in that it is provided on the locking plate.