JPS61277783A - Lock mechanism equipped with plural buttons - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a lock mechanism equipped with a plurality of buttons, and more specifically, it is always kept in a locked state by closing a door etc. The present invention relates to a lock mechanism equipped with a plurality of buttons that allows a door etc. to be easily opened by pressing a button selected in advance from a plurality of button groups when unlocking.

Prior Art Conventionally, in apartments, housing complexes, and other multi-tenant buildings, mailboxes for each resident are placed in one place on the lower floor for the convenience of deliverers of mail, newspapers, etc. ing. However, since the mailbox is located in an area that is easily accessible to outsiders, there is a risk that the contents of the letter may be viewed or stolen by others. For this reason, each door of the mailbox for each resident is fitted with a lock such as a cylinder lock, combination lock, or padlock, so that only the person in question can open the door.

Problems to be Solved by the Invention However, in the case of a duplicate key type lock such as the cylinder lock or padlock mentioned above, if the lock is not carried at all times, the user will have to go back to the room to retrieve the key when necessary. Furthermore, if the key is always carried, there are inconveniences such as the possibility of losing the key. Additionally, combination locks, which are unlocked by rotating multiple rings and matching the numbers, are generally miniaturized to be attached to mailboxes, and the numbers on the locks are smaller. Therefore, the location where the mailbox is installed is dimly lit, or the numbers are difficult to read at night, which is inconvenient.

Purpose of the Invention The present invention has been proposed in view of the above-mentioned drawbacks inherent in the conventional locks provided on the doors of mailboxes, etc., and has been proposed to suitably solve the problems. To provide a new button-operated lock that can be unlocked and eliminates the need to carry a key.

Means for Solving the Problems In order to achieve the above-mentioned object, a lock mechanism equipped with a plurality of buttons according to the present invention includes a plurality of storage members formed in a base frame, in which a button having a locking piece is movably placed in a plurality of storage members. The button is elastically stored so as to be movable by a certain amount, and when the button is pushed into the storage member, it comes into contact with a locking piece provided on the button, and the frame body that locks the button is moved into the base frame. The present invention is characterized in that a slide plate having a through hole of a desired shape is fitted onto the button, and an opening/closing knob is provided for attaching the slide plate and the hook in relation to each other.

Embodiment Next, a lock mechanism having a plurality of buttons according to the present invention will be described below with reference to a preferred embodiment and the accompanying drawings. FIG. 1 is an exploded perspective view of a lock mechanism according to the present invention, in which a base frame 10 having the shape shown has a rectangular opening 12a.
A plurality of button storage members 12 (eight in this example) are provided.

Cutouts 12b and 12c are provided in the upper and lower parts of the button storage member 12, respectively, and when the button 14 shown in FIG. 2 is stored in this member 12,
The locking pieces 14a, 14a formed on the button 14 and the notches L2b, 12c provided in the storage member 12 engage and abut, thereby preventing the button 14 from falling off.

Further, a projecting piece 12d is provided on the bottom of the storage member 12, and a projecting piece 14b is provided on the surface of the button 14 facing the bottom of the storage member 12. A compression spring 16 is inserted between the projections 12d and 14b, and the compression spring 16 normally biases the button 14 toward the opening 12a of the storage member 12.

Furthermore, a frame body 24 is provided with a tongue piece 20 that projects horizontally at the upper end, and has an appropriate number (eight in this embodiment) of through holes 22.
is prepared, and this frame body 24 is externally fitted into each storage member 12 of the base frame IO through each through hole 22. In each through hole 22'' in the frame 24, an open end 22a corresponding to the notch 12b provided in the storage member 12 is formed obliquely, and this inclined surface 22a allows the frame 24 to be connected to the storage member 1.
2 and set, it can be fitted into the notch 12b. Note that when the frame body 24 is inserted into the storage member 12 and set in the base frame 10, it is constantly elasticized downward by the plate spring 28 that is engaged with a protrusion 28 formed upwardly inside the base frame 10. Forced. However, instead of using this leaf spring 28, a plurality of compression springs may be elastically interposed between the base frame IO and the frame body 24. Therefore, when the button 14 is pushed into the storage member 12 by a predetermined amount against the elasticity of the compression spring 16, the engagement piece 1 of the button 14
The inclined surface 4a contacts the inclined end surface 22a of the frame 24, and the frame 24 moves upward slightly against the elastic force of the leaf spring 28. When the button 14 is further pressed and the inclined surface is completely separated from the inclined end surface 22a of the frame body 24, the frame body 24 is released from the leaf spring 2.
8 and lowers to the original position, and the engaging piece L4a
button 14 by fitting into through hole 22 of frame body 24
' is pushed into the storage member 12 and locked.

As shown in FIG. 2, two grooves 18a and 18b are bored in both vertical sides of the button 14 in parallel and at different levels. That is, as shown in FIGS. 2 and 3, when the button 14 is stored in the storage member 12, the groove 18a is formed at approximately the same position as the opening end surface of the storage member 12, and the groove 18b is bored at a position slightly protruding from the opening end surface. This groove portion 18b is arranged so that when the button 14 is pushed into the storage member 12 and is locked by the inclined end surface 22a of the frame body 24, the groove portion 18b reaches approximately the same position as the entrance end surface of the storage member 12. Dimensions are set.

Next, as shown in FIG.
2 is fitted externally. Note that below the slide plate 32,
An opening/closing knob 36 having the shape shown in FIGS. 1 and 6 is provided. This opening/closing knob 36 has a rectangular through hole 36b, into which a protrusion 32a formed integrally with the lower end of the slide plate 32 is inserted. Further, protruding pieces 38° 38 are integrally formed on the opening/closing knob 36 and extend horizontally to the protruding pieces 36a, and a hook 40 shown in FIG. 1 is placed on the protruding pieces 38, 38. ing. That is, the hook 40 is connected to the U-shaped member 4.
2 and a locking piece 44 provided on the bottom surface thereof, and a projecting piece 42a is provided on the opposite side of the locking piece 44. The locking piece 44 of the hook 40 is dimensioned so that it protrudes downward from the opening/closing knob 36 when the hook 40 is placed on the protruding pieces 3B and 38 provided on the opening/closing knob 36. ing. A compression spring 50 is inserted between the protruding piece 42a and a fixing member 48 having the shape shown in the figure, which is fixed to the lid 46 of the mailbox, thereby always elastically biasing the hook 40 downward. ing. It should be noted that hard synthetic resin materials are preferably used as materials for the above-mentioned main members in order to reduce weight and prevent rust.

Next, the operation of the lock mechanism equipped with a plurality of buttons according to the present invention constructed as described above will be explained with reference to the case where it is attached to a mailbox.

As shown in FIG. 5, in a mailbox 52 in which a front lid 46 is provided, a lock 54 according to the present invention is attached to the back surface of the lid 46. The lid 46 is pivotally attached to a frame 58 of the mailbox 52 via a shaft 56 so as to be openable and closable. Further, the lid body 46 has a tongue piece 2 disposed on the lock 54.
0. Through holes are provided for allowing the button 14 and the opening/closing knob 36 to protrude from the front surface of the lid body.

As shown in FIG. 3, the buttons 14 in the lock 54 are arbitrarily selected in advance into button A, in which the groove 18a is disposed on the left side in the drawing, and button B, in which the groove 18b is disposed on the left side in the drawing. and is stored in the storage member 12.

As shown in Fig. 6(a), when one lock is locked, the lock 5
The buttons 14 arranged in the storage member 12 are all
Since the slide plate 32 is not pushed in, the slide plate 32 that is fitted onto the button 14 as shown in FIG. is in contact with button B and cannot be slid upward. Therefore, the opening/closing knob 36 and the hook 40 attached to the slide plate 32 cannot be lifted upward. That is, the locking piece 44 provided on the hook 40 contacts the frame 58 of the mailbox 52 and is held in a locked state, so that the lid 46 cannot be opened.

When releasing the locked state of the lock, refer to Fig. 3(b).
Then, as shown in FIG. 6(b), the button B stored in the storage member 12 and selected in advance for unlocking is pressed, and the button B is pushed in by the frame 24. stop,
Groove 18a provided on button A and groove 18b provided on button B
and align them.

The inward projecting piece 34 in the through hole 30 of the slide plate 32 can move upward without coming into contact with the button 14. In this state, when the opening/closing knob 36 is manually pushed upward as shown in FIG. It moves upward together with the hook 40.

That is, the locking piece 44 provided on the hook 40 is released from contact with the frame 58 of the mailbox 52, and the lid 46 can be rotated about the shaft 56 and opened toward the front.

Furthermore, when the hook 40 is raised, the hook 40
Since the upper surface of the U-shaped member 42 rises while coming into contact with the frame 24 that locks the button 1.4, the opening/closing knob 3
6 is pushed up to the maximum limit, the button 14 is released from the frame 24 and returns to its original state due to the elastic force of the compression spring 16. Furthermore, when the pressing force of the opening/closing knob 36 is released, the hook 40 is moved by the elastic force of the compression spring 50 that is simply inserted between the hook 40 and the fixing member 48.
0 and the opening/closing knob 36 are pushed down.

Note that the hook 40 is only pushed down by the elastic force of the compression spring 50.

The hook 40 itself is movable upward in any state. Therefore, when closing the opened lid 46, the hook 40 is pressed against the frame 58 of the mailbox 52 and pressed further.
0 rises against the elastic force of the compression spring 50, and finally the closing of the lid body 46 is completed. At this point the hook 40 is.

Since it is located inside the frame 58 of the mailbox 52, it is pressed downward by the elastic force of the compression spring 50 and becomes locked.

Further, the tongue piece 20 provided on the frame body 24 is connected to the button 14.
This is to return the button 14 to its original state if the button is pressed incorrectly. In other words, the button 14 is
At the time of being stored in the storage member 12, it is stored in a state that is arbitrarily selected as button A or button B. For example, if only the button B is pressed and locked to the cutout side 22a of the frame 12, the lid 46
However, if the other buttons 14 are pushed in, the inwardly protruding pieces 34 of the slide plate 32 will come into contact with the buttons 14, making it impossible to open them. Therefore, the tongue piece 20 is pushed up, the notch side 22a of the frame body 24 and the locking piece 14a of the button 14 are unlocked, and the sixth
This is to return the lock shown in Figure (a) to the locked state.

As described in detail of the invention, according to the lock mechanism equipped with a plurality of buttons according to the present invention, the lock can be easily unlocked by pressing a button with a number that only the operator knows in advance as a password. , and there is no need to carry a key around. Furthermore, since it is a simple mechanism, there is no need to worry about breakdowns, and since it is made of synthetic resin, it does not rust. In the illustrated embodiment, the case where the present invention is used in a mailbox is explained, but the present invention is not limited to this, and can be applied to various necessary parts of locks.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a lock mechanism equipped with a plurality of buttons according to the present invention, Fig. 2 is a partially cutaway perspective view when the buttons are stored in a storage member, and Fig. 3 (,) is an exploded perspective view of a lock mechanism equipped with a plurality of buttons according to the present invention. A perspective view showing the relationship between the button and the slide plate, FIG.
) is a perspective view showing the relationship between the button and the slide plate in the unlocked state, FIG. 4 is a front view when the lock mechanism equipped with a plurality of buttons according to the present invention is attached to a mailbox, and FIG. The figure is a sectional view taken along the line ■-v in FIG. 4, and FIG. 6(a). (b) and (c) are cross-sectional views showing step-by-step an unlocking operation of a lock mechanism provided with a plurality of buttons.

Claims (2)

[Claims] (1) A button having a locking piece is elastically stored in a plurality of storage members formed on a base frame so that it can move forward and backward by a predetermined amount, and when the button is pushed into the storage member, A frame body that comes into contact with a locking piece provided on the button to lock the button is disposed within the base frame, a slide plate having a through hole of a desired shape is fitted around the button, and A lock mechanism equipped with a plurality of buttons, characterized in that an opening/closing knob is provided for attaching the slide plate and the hook in relation to each other. (2) A lock mechanism equipped with a plurality of buttons according to claim 1, wherein two grooves are formed in parallel and at different levels on both sides of the button.