JPS649436B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic lock that reliably prevents unauthorized unlocking.

[Conventional technology]

In conventional magnetic locks, a blind hole is drilled in the lock body, a magnet and a spring are inserted, and a portion of the magnet is inserted into a recess on the back of the lock plate to lock the lock.

[Problem to be solved by the invention]

Therefore, in conventional magnetic locks, the magnet inside the lock plate is in a fixed position, so the position of the internal magnet can be checked by attracting the magnet to the front of the lock plate, and then by reversing the external magnet. If you turn it in the right direction and attach it with adhesive, the internal magnet will be repelled and you will be able to pull it out of the recess in the lock plate. Therefore, there is a possibility that the lock may be illegally unlocked by such a procedure.

[Means to solve the problem]

A picture wall with an inclined cam is integrated inside the case in which the magnetic lock is installed, and a lock plate whose back is divided into several empty chambers by radial protrusions is housed in the front edge of the case, and magnets are installed in these empty chambers. At the same time, insert the rectangular core rod of the lock plate into the round core hole of the drawing wall, insert the intermediary plate with an inclined cam and the seat plate with a pin into the rear side of the empty space, and insert the square core rod of the lock plate into the square core hole of both plates. Insert the rectangular core rod of the lock plate into the lock plate, secure the engagement of the slope cams with the spring, and insert the pin of the seat plate fully into the pin hole of the intermediate plate, and adjust the length of the magnet between the lock plate and the intermediate plate. The space between the two members is made slightly shorter than the distance between the two members to prevent the intermediate plate from moving forward, and these members allow the internal magnet to move freely within the space on the back of the lock plate.

[Effect]

Since the lock is unlocked by stacking a specified key on the lock plate and directing the magnet inside the lock plate towards the pin hole in the intermediary plate, it is not possible to locate the pin hole from the outside, Therefore, unauthorized unlocking can be reliably prevented.

〔Example〕

The magnetic lock of the present invention will be explained below based on the illustrated embodiments.

In the figure, 1 is a shallow cylindrical case with a bottom and a window hole 2 on its circumferential surface.The case 1 is fitted into an annular holder 3 fixed to a related member (not shown), and the inside (right side) of the case is Make sure the window holes 2 are aligned. Reference numeral 4 denotes a picture wall provided integrally with the inner wall near the rear of the case 1, in which a vertical groove 5 is cut in the diametrical direction on the back side, a claw piece 6 is inserted, and a tension spring 9 is interposed between this and the end face of the groove.
By making the wedge-shaped toe 7 protrude outward from the window hole 2 and hooking it onto the receiver 3, the case 1 is closed.
When the notch 8 on the front (left side) of the claw piece is pushed down, the claw tip 7 is inserted into the window hole 2.
immersed in and allowed to leave Case 1.

Reference numeral 10 denotes three inclined cams provided on the front side of the picture wall 4, which are made by cutting equal parts of a ring band 11 that goes around the periphery of the front side into a trapezoid shape. 12 is a circular lock plate,
The front and back sides are hollowed out almost completely to form a shallow and thin dish shape, and placed in the front edge of the case 1 so that their circumferential edges are aligned, and three slightly wide protrusions 13 are placed on the back side in a radial pattern of equal angles. The back surface is divided into three empty chambers 14, and a spring catch 15 is bored in the center of each protrusion 13, and one short round rod-shaped magnet 16 for a magnetic lock is inserted into each empty chamber. . 17 is the lock plate 12
A rectangular core protruding from the back side of the panel is cut to make a square with a rectangular cross section by cutting the two opposing sides of the outer circumferential surface to be flat, and inserting this core into the round core hole 19 of the painting wall.
The step surface 18 at the rear end is engaged with the notch 8 of the claw piece, and the dowel pin 18' is inserted into the annular groove 17' of the round bar part to prevent it from coming out.

Reference numeral 20 denotes a circular intermediary plate inserted into the rear side of the empty chamber 14, in which three slope cams 21 provided at equal angles on the periphery of the back surface are engaged with the slope cams 10 of the picture wall, and a lock plate is placed in the center. A rectangular core hole 22 through which a rectangular core rod 17 is passed, and three pin holes 23 are equally spaced around the core hole 22. 24
is a seat board interposed between the painting wall 4 and the intermediary board 20, which is made to fit within the ring band 11 of the painting wall and have a thickness equal to the height thereof, and through which the core rod 17 of the lock board is passed through the center. A rectangular core hole and three pins 25 are provided at equal angles around the core hole, and the pins are fully inserted into the pin holes 23 of the intermediate plate so that the tips of the pins are aligned with the front surface of the intermediate plate. Reference numeral 26 denotes three springs inserted into the back surface of the lock plate 12.The front ends of the springs are fitted into the protruding seats 15 to prevent them from shifting, and the rear ends are brought into contact with the front surface of the intermediary plate 20 to prevent the springs from sliding. The engagement between the cam 21 and the slope cam 10 of the picture wall is ensured, and the magnet 16 inserted into the lock plate is dimensioned to leave a slight gap with respect to the intermediate plate 20.

Reference numeral 27 denotes a key having a perforated grip 29, which is made sized to fit into the dish-shaped surface of the lock plate 12. Three small magnets 28 are embedded in the periphery at equal angles, and these magnets 28 are attached to each of the intermediary plates. By arranging the magnetic poles of the opposite sex toward the pin hole 23 and facing the magnet 16 in the lock plate, and changing the number of magnets 16 and 28, the direction of the magnetic poles, and the position of the pin hole 23, the key can be changed. make. A notch 30 is provided on the periphery of the key 27, and when the key is stacked on the lock plate 12, it engages with a protrusion (not shown) on the periphery to restrict the use position of the key 27.

The operation of the magnetic lock of the present invention constructed as described above will be explained below.

If an attempt is made to rotate the lock plate 12 using a key other than the authorized key in an attempt to unlock the lock plate illegally, the square core rod 17 of the lock plate 12 is fitted into the square core hole 22 of the intermediary plate 20, and the lock is broken. The intermediary plate is not allowed to rotate together with the plate. As a result, the ring band 11 on the case 1 side
The slope cam 21 of the intermediate plate comes to ride on the slope cam 10 of the ring, and the intermediate plate is pushed forward by the slope cam of the ring, and the lock plate is also pushed forward through this intermediate plate. However, the magnets 16 inserted into the cavities 14 of the lock plate are dimensioned to leave a slight gap with respect to the front surface of the intermediary plate 20, and the magnets are located at the bottom of each cavity 14 with pin holes. 23, the intermediate plate 20 is stopped from moving further forward when it hits this magnet 16, so it cannot rotate any further. Therefore, the square core hole 22 of the intermediate plate 20 is Rotation of the lock plate 12 through which the core rod 17 is inserted is also prevented. This prevents unauthorized unlocking.

On the other hand, if a regular key 27 shown in FIG. 9 is used, unlocking and locking can be easily performed.

When attempting to unlock the lock, when the notch 30 of the key is fitted into the protrusion of the lock plate 12 and the key 27 is stacked on the lock plate 12, the three magnets 16 in the lock plate are attracted to the magnets 28 of the key, and each of the intermediary plates Head toward the pin hole 23.

As a result, the three magnets 16 are connected to the three pin holes 23.
, and the magnet can also be moved forward.
Therefore, when the intermediary plate is pushed forward as described above by the action of the slope cams 10 and 21 as the lock plate rotates, it can rotate together with the lock plate and the seat plate. When the key 27 is turned, the notch 30 of the key turns the lock plate 12 and the rectangular core rod 17, and the intermediary plate 20 and seat plate 24 through which the core rod is inserted into the rectangular core hole are also connected to the lock plate 12. Rotate to. When the lock plate rotates, the stepped surface 18 at the rear end of the core bar pushes down the notch 8 of the claw piece, causing the tip 7 to sink into the window hole 2. As a result, the toe and the money receiver 3 are unlatched, so the case 1 is pulled out and unlocked. After that, when the key 27 is turned in the opposite direction, the intermediate plate 20 is pushed by the spring 26, descends the slope cams 10 and 21, and moves rearward, so that the three magnets 16 are pulled out from each pin hole 23 and pinned to the seat plate. 25 is in a state where each pin hole is fully bored, and therefore any magnet 16 can move freely in the empty space 14 to take any position, and this magnet makes the lock plate 12 unrotatable and locks it. The stationary state is ensured.

In the embodiment, the magnet 16 in the lock plate is in a vertical position with its axis standing upright on the lock plate 12, but the magnet 16 is placed in a horizontal position with its axis in the circumferential direction of the lock plate to open the empty chamber 14. It may be charged to When the magnet 16 in the lock board is oriented vertically, three magnetic poles can be used with three magnets, but when it is oriented horizontally, six magnetic poles are targeted by the key 27, so the same number of magnets can be used. You can make many different keys by inserting it into the lock plate. In this case, pin hole 2 of the intermediary plate
3 is made into a shape that allows a sideways magnet to fit in, and the key magnet 28 is also placed sideways and embedded in the circumferential direction. In addition to the round bar-shaped magnet 16, a cubic or nearly rectangular parallelepiped with edges, that is, a dice-shaped magnet can be used, and accordingly, the key magnet 28 is also replaced with a dice-shaped magnet.

The above describes one embodiment of the present invention, and the present invention is not limited to this embodiment, but can be modified within the gist of the invention. Furthermore, the number of empty spaces 14 and magnets 16 provided on the back surface of the lock plate can be increased, and the number of pin holes 23 and pins 25 can be increased accordingly. However, magnetic locks have a spacing of 7
It is necessary to keep a distance of about 8 mm, and if this distance is too narrow, adjacent magnets will interfere with each other and become difficult to move.
Therefore, when increasing the number of empty chambers 14 and magnets 16, care must be taken so that the protrusions 13 do not become too thin.

〔Effect of the invention〕

Since the present invention is constructed as described above, the internal magnet moves freely within the empty space on the back of the lock plate and takes any position, and even if the position is searched using the external magnet, the pin hole in the intermediary plate will not be detected. It's meaningless unless you understand it,
Since the position of the pin hole cannot be searched from the outside, the magnetic lock according to the present invention can reliably prevent unauthorized unlocking, and has the effect of significantly improving the performance of the magnetic lock.

[Brief explanation of drawings]

The drawings show an embodiment of the magnetic lock according to the present invention; FIG. 1 is a longitudinal sectional view of the embodiment when it is locked, FIG. 2 is a longitudinal sectional view of the embodiment when it is unlocked, and FIG. 3 is a longitudinal sectional view of the embodiment when it is unlocked. A sectional view of the case, Fig. 4 is a sectional view of the lock plate, Fig. 5
The figure is a rear view of the lock plate, Figure 6 is a rear view of the intermediary plate, Figure 7 is a side view of the seat plate, Figure 8 is a rear view of the lock plate when unlocked, and Figure 9 is a front view of the key. It is. In addition, 1 is a case, 4 is a picture wall, 6 is a claw piece, 7 is a toe, 8 is a notch, 9 is a tension spring, 10 is an inclined cam, 12 is a lock plate, 13 is a protrusion, 14 is a vacant room, 16
is a magnet, 17 is a core rod, 18 is a stepped surface, 19 is a core hole,
20 is an intermediary plate, 21 is an inclined cam, 22 is a core hole, 2
3 is a pin hole, 24 is a seat plate, 25 is a pin, 26 is a spring, 27 is a key, and 28 is a magnet.

[Claims]

1. Equipped with multiple audio input/output devices installed in different locations and a signal transmission system that connects these audio input/output devices to each other, enabling high-pitched calls between these multiple audio input/output devices. a selection device that selects at least one of the audio input/output devices and extracts an audio signal; and a voice analysis device that extracts feature parameters representing characteristics of the audio from the audio signal extracted by the selection device;
a storage device for storing feature parameters analyzed and extracted from pre-input speech as standard parameters; and a speech detecting the similarity between the feature parameters output from the speech analysis device and the standard parameters read from the storage device. A recognition device and a lock release device operated by the detection output of the voice recognition device are provided, and at least one of the voice input/output devices is provided.
The voice feature parameters input via