JPH0540203Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a housing locking device suitable for use in public telephones and the like.

[Conventional technology]

Conventionally, the housing of a public telephone has a rear housing with an open front, and a front opening of the housing that is rotatably attached to the front end of the right side plate of the rear housing by a hinge. It consists of a front casing that can be opened and closed, and the front casing is locked by a locking device. The locking device includes a locking plate that has an engaging hook and is movable up and down on the inside surface of the left side plate of the rear housing, and a locking plate that is provided protruding from the inside side of the left side plate of the rear housing. The lock includes a locking piece and a lock that moves the locking plate up and down when rotated by a key, the engaging hook part is engaged with the locking piece when the lock is locked, and the engaging hook part is engaged with the locking piece when the lock is unlocked. The locking piece is configured to disengage the locking piece from the locking piece.

[Problem that the invention attempts to solve]

However, if the hinge that connects the front and rear casings is an external hinge that is exposed to the outside of the casing, it not only looks unsightly, but is also easily destroyed for the purpose of mischief, theft of stored coins, etc. Therefore, it was necessary to make it sturdy. On the other hand, while internal hinges can solve the above-mentioned problems, they also protrude into the housing, narrowing the storage space for coin sorting devices, card readers, etc., and creating wasted space behind the hinge. The point was hot.

Therefore, recently, a case has been developed in which the front case is separated and independent from the rear case without using a hinge, the front case is removably fitted into the front opening of the rear case, and the case is locked using a locking device. Proposed. In that case, since there is no hinge, it is necessary to lock the left and right side panels of the front casing, but using two locks increases the number of parts and complicates the structure.
There is a problem of narrowing the internal space of the housing.
There is a need for a locking device with a single lock.

[Means for solving problems]

The housing locking device according to the present invention was developed in response to the above-mentioned demands, and a pair of locking plates each having an engaging hook are arranged on the inner surface of each side plate of the rear housing so as to be movable up and down. A locking piece is provided on the inner surface of each side plate of the front housing which is detachably attached to the front opening of the rear housing, and protrudes from the inner surface of each side plate corresponding to the engagement hook, and one side of the rear housing A lock for moving the locking plate on the side plate side up and down is provided on the side plate of the housing, and a rotating member is provided on the inner surface of each side plate of the rear housing, and the front end of the rotating member is engaged with the corresponding locking plate. , a connecting bar is arranged on the inner surface of the back plate of the rear housing so as to be able to rotate about its center line, and the bent portions of both ends of the bar are respectively engaged with the rear ends of the corresponding rotating members. It was designed to match.

[Effect]

In this invention, the movement of one locking plate that moves up and down by the lock is reliably transmitted to the other locking plate by a pair of left and right rotating members and a connecting bar that connects these rotating members. The left and right side panels of the front housing can be locked.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is a partially cutaway perspective view showing an embodiment of the locking device according to the present invention applied to the housing of a public telephone, and FIG. 2 is a plan view of the main parts of the device. In these figures, 1 is a rear housing whose front upper part is open and a coin sorting device, a card reader, a safe, etc. (all not shown) are housed inside, and 2 is a box-shaped case whose rear side is open. A front casing is removably fitted into the front opening 3 of the rear casing 1, and these casings 1 and 2 constitute a casing 4 of the public telephone. A hanger arm 6 for holding a transmitter/receiver (not shown) is provided on the outer surface of the left side plate 5 of the rear housing 1 so as to be rotatable in the vertical direction. is provided with a pushbutton dial, a coin slot, a magnetic card insertion slot, an ejection slot, etc. (none of which are shown).

Now, the locking device 10 that locks the front housing 2 is as follows.
A pair of left and right locking plates 12 and 13 are provided at the front ends of the inner surfaces of the left and right side plates 5 and 11 of the rear housing 1, respectively. The locking plate 12 on the left side is operated directly by a lock 15 which is rotated by a key 14, and has a pair of upper and lower elongated holes 16a, 16b.
Holding pieces 17A and 17B, which are approximately T-shaped in plan view and are provided on the inner surface of the left side plate 5, are inserted into the left side plates 5a and 16b so as to be vertically movable. A pair of upper and lower engaging hooks 18A, 18B having a substantially inverted L shape are integrally provided, and these hooks 18A, 18B protrude forward from the front opening 3 of the rear housing 1.
Furthermore, a notched recess 19 is formed in the middle of the rear edge of the locking plate 12 in correspondence with the lock 15, and the upper and lower edges of this recess 19 are provided with horizontal bent pieces bent toward the inside of the housing. 20a and 20b are provided, respectively.

The lock 15 is a conventionally well-known cylinder-shaped lock,
A cylinder 15 fixed to the inner surface of the left side plate 5
A and the rotating shaft 15B inserted into the cylinder 15A.
and a rotating plate 15 fixed to the inner end of the rotating shaft 15B.
C, and a roller 1 that is attached to the outer surface of the tip of the rotating plate 15C and pushes up the bent piece 20a when unlocking.
5D etc., and the rotating shaft 15B is provided with the key 1 from the outside.
It is configured to be rotated by 4.

Like the left locking plate 12, the right locking plate 13 also has a pair of upper and lower engagement hooks 24A, 24B in a substantially inverted L shape integrally provided on its front end surface, and It is disposed on the inner surface of 11 so as to be vertically movable. However, since the locking plate 13 on the right side is not directly operated by the lock 15, it has a structure similar to that of the locking plate 12 on the left side in that it does not have the aforementioned engagement recess 19 and the pair of bent pieces 20a, 20b. are different.

A pair of left and right rotating members 26 and 27 are further disposed on the inner surfaces of the side plates 5 and 11 of the rear housing 1, respectively. These rotating members 26 and 27 extend in the front-rear direction of the housing 4, and their intermediate portions are pivotally supported by shaft pins 28 and 29, respectively, so that they extend along the inner surfaces of the side plates 5 and 11. The folding pieces 31 and 32 provided at the front end are rotatable in the vertical direction.
are slidably inserted into the engagement holes 33, 34 of each of the locking plates 12, 13, respectively. On the other hand, the rear end portions of the rotating members 26 and 27 are connected to each other by a connecting bar 35. The connecting bar 35 is formed in a substantially U-shape, so that
It integrally includes a main body 35A and a pair of left and right bending parts 35B and 35C provided at both ends of the main body 35A,
The main body 35A includes a pair of left and right holding members 37 attached to the inner surface of the back plate 36 of the rear housing 1.
A, 37B, each bending part 35B, 35C extends forward along the inner surface of each side plate 5, 11, and each rotation member 2
Engagement grooves 39a, 3 provided at the rear end portions of 6, 27
9b, respectively, so as to be slidable.

In this case, the rotation fulcrum of the left rotation member 26,
That is, the distance ₁ from the shaft pin 28 to the connecting bar body 35A is smaller than the distance L ₂ from the shaft pin 29 of the right rotation member 27 to the connecting bar body 35A (L ₂ >L ₁ ), and from the bar body 35A Rotating member 2
The distance l ₁ to the engaging part (engaging groove 39a) with 6 is:
The distance from the bar body 35A to the engaging part (engaging groove 39b) with the rotating member 27 is smaller than l ₂ (l ₂ >l ₁ )
It is set. This is to correct the difference in the movement strokes of the left and right locking plates 12, 13 due to the difference in twist angle at both ends of the connecting bar 35.

On the inner surface of each side plate 40, 41 of the front housing 2, there is a locking piece 4 consisting of a pair of upper and lower parts.
2A and 42B, 43A and 43B are the engaging hook portions 18A and 18 of each of the locking plates 12 and 13.
B, 24A and 24B, respectively.

Next, the operation of the locking device 10 having such a configuration will be explained.

When unlocking, the rotating plate 15C of the lock 15 is in the first position.
As shown in the figure, the roller 15D is set and held in the uppermost position, which is a substantially vertical state, and in this state, the roller 15D supports the folding piece 20a from below, and the locking plates 12 and 13 are moved to the uppermost position, i.e. It is set and held in the release position. Next, the front housing 2 is fitted into the front opening 3 of the rear housing 1, and the key 14 is inserted into the front housing 2.
When the shaft 15B is inserted into the keyhole of the rotating shaft 15B and rotated counterclockwise in FIG. 1, the rotating plate 15C also rotates to lower the roller 15D. It is released from the roller 15D and descends under its own weight. Then, the upper edge of each elongated hole 16a, 16b descends by a certain amount and the holding piece 17
When it comes into contact with A, 17B and stops, each engaging hook 1
8A and 18 engage with the locking pieces 42A and 42B from above. Furthermore, when the left locking plate 12 begins to descend, the movement of the plate 12 is transmitted to the right locking plate 13 via the left rotation member 26, the connecting bar 35, and the right rotation lever 27. , the plate 13 is also lowered at the same time, and its engaging hooks 24A, 24B are engaged with the locking pieces 43A, 43B from above. As a result, the left and right side plates 40 and 41 of the front housing 2 are locked by the left and right locking plates 12 and 13, respectively.

Note that the rotating plate 15C is the locking plate 1.
2 and 13 can be rotated even after they are lowered to the locked position and stopped, and when they are in a nearly horizontal state, the roller 15D comes into contact with the bent piece 20b of the locking plate 12, preventing further rotation. thwarted.

Thus, the locking device 10 having such a configuration
According to
The lock can be securely locked just by using two locks 15, and the locking plate 12 on the left side
The pair of left and right rotating members 26, 27 and the connecting bar 35, which transmit the motion of Since they are arranged separately, they do not get in the way when installing a coin sorting device, a card reader, etc. In addition, in this embodiment, taking into account the difference in twist angle at both ends of the connecting bar 35, the distance L ₁ from the rotation center of the left rotation member 26 to the connecting bar main body 35A is determined.
is smaller than the distance L ₂ from the rotation center of the right rotation member 27 to the connection bar body 35A, and the distance from the connection bar body 35A to the engagement part (engagement groove 39a) with the left rotation member 26. Since the distance l ₁ is set smaller than the distance l ₂ from the connecting bar main body 35A to the engaging part (engaging groove 39b) with the right rotation member 27, the movement of the left and right locking plates 12 and 13 is prevented. The strokes can be aligned almost equally,
The engaging hook portions 18A, 18B and 24A, 24B
, locking pieces 42A, 42B and 43A,
43B can be engaged almost simultaneously.

Although the above embodiment has been described with reference to the case where it is applied to the case of a public telephone, the present invention is not limited to this in any way and can be applied to the case of various devices.

[Effect of idea]

As explained above, according to the locking device for a housing according to the present invention, the movement of one locking plate, which is disposed on one inner surface of the rear housing so as to be movable up and down, can be controlled by a pair of left and right rotating members. The front casing is configured to transmit information to the other locking plate disposed on the inner surface of the other side via the connecting bar connecting these rotating members. In addition, a pair of connecting members are arranged along the inner surfaces of the left and right side plates of the rear case, and a connecting bar is arranged along the inner side of the back plate of the rear case. Therefore, these members are less likely to get in the way when other mechanisms, parts, etc. are assembled, and the internal space of the casing can be used widely and effectively, which has great practical effects.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention applied to the housing of a public telephone, and FIG. 2 is a plan view of the main parts. DESCRIPTION OF SYMBOLS 1... Rear housing, 2... Front housing, 3... Front opening, 4... Housing, 5... Left side plate, 10... Locking device, 11... Right side plate, 12, 13... ... Locking plate, 14 ... Key, 15 ... Lock, 18
A, 18B, 24A, 24B...Engaging hook portion, 2
6, 27... Rotating member, 35... Connection bar, 36
...Back plate, 40, 41...Side plate, 42A, 42
B, 43A, 43B... Locking piece.

Claims (1)

[Scope of utility model registration request] A pair of left and right locking plates each having an engaging hook portion and supported vertically movably on the inner surface of the left and right side plates of the rear housing, and a locking plate that is detachably attached to the front opening of the rear housing. A locking piece is provided on the inner surface of the left and right side plates of the front casing to correspond to the engaging hook portion of the locking plate, and a locking piece is provided on one of the side plates of the rear casing. A lock is provided on the inner surface of the left and right side plates of the rear housing, and a lock is provided on the inner surface of the left and right side plates of the rear housing to move each locking plate up and down by operating a key, and to engage and separate the engaging hook from the locking piece. a pair of left and right rotating members that are rotatably disposed and whose front ends engage with each of the locking plates; A locking device for a housing, characterized in that the bending portion includes a substantially U-shaped connecting bar that engages with the rear end portion of each of the rotating members.