JPS63138080A - Cylinder lock - 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 (a) Field of Application The present invention relates to a cylinder lock that can be locked and unlocked by an electric signal and that uses less power when locking and unlocking.

(0) Prior art Conventional electric locks or electronic locks that are locked and unlocked using TL electric signals are locked and unlocked using a solenoid or a motor, but these actuators use several watts or several tens of watts. It is normal to apply electricity of 100m5 or more, and the amount of electricity consumed when locking and unlocking is 1
Joule or more.

(c) Problems to be Solved by the Invention Therefore, the batteries used therein were large. Furthermore, the actuator and power source are too large to be applied to a cylinder lock, and it is very difficult to store them inside the cylinder lock.

(d) Means to solve the problem In order to digitize the cylinder lock, it is necessary to mechanically connect the outer cylinder and the inner cylinder that make up the cylinder lock, and release the connection when unlocking. It is necessary to make the actuator for moving the pins small and to extremely reduce its power consumption.

In this case, the battery can be small and an electronic cylinder lock can be obtained. The moving amount of the movable pin is 2 to 4ff.
ll! Although it is sufficient to have the first position, a large amount of electric power is required to operate an electromagnet having 2 to 41 gaps. This is because the ampere-turns required to obtain the required magnetic velocity density in the air gap are proportional to the air gap length, and the power is proportional to the square of the ampere-turns.

In the present invention, 11 self-holding magnets that maintain the operating state are used, and when closing the gap, so-called operation, the magnet is operated using human power when inserting the key into the cylinder lock to unlock it, and the state is maintained. The problem was solved by using electricity only at the moment of opening.

(f) Operation In the case of a cylinder lock, insert the correct key into the keyhole to enable locking/unlocking, that is, to make the inner cylinder rotatable, and then manually turn the key to rotate the inner cylinder to lock/unlock the lock. In the same way, electronic cylinder locks can be locked and unlocked by inserting the key into the keyhole, that is, by electrically removing the pin that connects the inner cylinder and the outer cylinder, making the inner cylinder rotatable, and rotating the inner cylinder manually. to lock and unlock. To remove the pin, release the self-holding electromagnet. The power required for release is extremely small compared to the power used to change the state from open to held. The structure is such that returning the electromagnet to the holding state is done by human power when pulling out the key or rotating the inner cylinder, which saves the large amount of power required to electrically change the electromagnet to the holding state, and it can be used as an electronic cylinder. reduce power consumption.

b) Example The present invention will be explained below with reference to the drawings.

FIG. 1(a) is a simplified sectional view for explaining the structure of an embodiment of the cylinder lock of the present invention, and FIG. 1(b) is a front view of the same cylinder lock. In Fig. 1, 1 is an electronic key, 2 is an inner cylinder, 3 is a keyhole, 4 is an outer cylinder, 5 is a magnetic holding type electromagnet, 6 is a movable iron piece of the magnetic holding type electromagnet, 7 is a permanent magnet, and 8 is an inner cylinder 2 and outside 14
9 is a leaf spring that supports the pin 8, 10 is a push-up bar for returning the movable iron piece 6 to the magnetic holding state, +1 is a leaf spring that supports the push-up bar 10, 12 13 is a spring for pulling up the movable iron piece 6 upward in the figure when the electromagnet 5 loses the attractive force of the permanent magnet 7 due to energization, 13 is a hole for inserting the pin 8 provided in the inner cylinder, and 14 is the inner cylinder. The plate-shaped protrusion attached to 2 serves to transmit the rotational movement of the inner cylinder to the bolt inside the lock box. This bolt is used to lock and unlock the lock.

FIG. 1(b) shows a front view with the electronic lock l removed.

FIG. 2 is a diagram showing the positions of the pin 8 and the lifting rod 10 when the cylinder lock of FIG. 1 is in a lockable/unlockable state by energization.

FIG. 3 is a sectional view of the inner cylinder 2 taken along line A-B in FIG.
3 indicates the hole into which the pin 8 is inserted. The cross section of the pin 8 is omitted.

Figure 4 is a cross-sectional view of 12 of the lines taken along line C-D in Figure 1.
5 is a groove of a passage through which the push-up rod 10 passes when the inner cylinder rotates; 1;
6 is a concave portion of the electronic key 1, and the cross section of the push-up rod 1O is omitted.

FIG. 5 is a diagram showing the external appearance of the electronic key l used in the embodiment of FIG. 1, where 16 is a recess provided in the electronic key l and is provided at a location corresponding to the position of the push-up rod lO.

FIG. 6 shows an embodiment in which a groove is formed on the outer periphery of the inner cylinder 2, and the push-up rod 10 is pushed up by the force generated when the inner cylinder 2 is rotated.

FIG. 7 is a cross-sectional view of the inner cylinder 2 taken along the line E-F in FIG.

Figure 8 shows a holding electromagnet with mechanical operation and pin 8.
In the figure, 1B is an electromagnet, X9 is a movable iron piece of the electromagnet, and 20 is a claw attached to the movable iron piece that holds the pin 8 in a lockable/unlockable state.

FIG. 8(a) shows a held state, that is, a state in which locking and unlocking is impossible;
(b) shows a state in which the electromagnet 18 is energized to release the holding and the pin 8 moves upward, making it possible to lock and unlock the lock.

FIG. 9 is a simplified sectional view of a cylinder lock employing the method shown in FIG. 8, and 21 is a hinge that rotatably supports the springs 9 and 11.

The present invention will be explained according to the drawings.

FIG. 1 shows the pin 8 in the hole 13 of the inner cylinder, making it impossible to lock or unlock the lock. In this state, the movable iron piece 6 is attracted by the magnetic flux of the permanent magnet 7, and maintains this state without consuming power.

When the electronic key 1 is inserted all the way into the keyhole 2 in this state, a key code is transmitted from the electronic key l, and upon receiving it, the electronic circuit inside the outer cylinder 4 confirms the correct key code (not shown). If it is correct, current is sent to the ffi magnet 5. This current is made to flow in a direction that cancels out the magnetic flux of the permanent magnet 7. Therefore, the magnetic flux holding the movable iron piece 6 weakens, the force of the spring 12 becomes greater than the attractive force of the electromagnet 5, and the movable iron piece 6 is pulled by the spring 12 and moves upward in the figure.

Accordingly, the pin 8 also moves upward, and the inner cylinder 2 becomes freely rotatable, making it possible to lock and unlock it. The pin 8 has to move about 2 to 4 mm, but since it is moved by the force of the spring 12, a sufficient amount of movement can be obtained regardless of power consumption. The power required to cancel the magnetic flux of the permanent magnet 7 and release its hold is:
According to the data of the prototype, when the attraction force at the attraction part of the electromagnet 5 was 50g and the upward force by the spring 12 was 25g, the IOW was approximately 0.IOW. Also, the energization time was 5ms.
That was enough.

Therefore, the amount of power to move pin 8 upward is 0.10~V
X5ms = 0.5 millijoules.

FIG. 2 shows the situation when the pin 8 is in the lockable/unlockable state. In FIG. 2, the pin 8 has moved upward, and conversely, the push-up bar 10 has moved downward and entered the recess 16 of the electronic key l. In this state, the inner cylinder 2 is free to rotate,
At this time, if the electron &311 is manually rotated, the push-up rod 10 moves freely within the groove 15 shown in FIG. Although the rotational movement of the inner cylinder 2 at this time is not shown in the drawings, it is transmitted to the bolt inside the lock body and moves the bolt to the locking or unlocking position. Whether to lock or unlock is determined by the direction of rotation of the inner cylinder 2. This is a known technique used in conventional cylinder locks.

When locking and unlocking are completed, the inner cylinder 2 is returned to the initial position, and the electronic key can be removed only in this position. This is also a known technique for conventional cylinder locks. This removable state is shown in FIG.

When the electronic lock 1 is pulled out in this state, its recess 16 moves to the right in the figure, and when the push-up bar 10 comes out of the recess 16, the push-up bar 10 is pushed upward, the movable iron piece 6 is pushed down, and the electromagnet 5 The magnetic flux of the permanent magnet 7 holds the parts pressed down until they come into close contact.

The amount of movement of the push-up rod 10 at this time must be large enough to re-adsorb the movable iron piece 6. Based on this idea, the depth of the recess 16 of the electronic key 1 is designed with a margin. The extra movement of the push-up bar 10 resulting from this margin is absorbed by the deflection of the spring 11. The above-described movement of the movable iron piece 6 causes the pin 8 to drop downward and enter the hole 13 to fix the inner cylinder to the outer cylinder. In this way, the held state is restored without consuming power.

According to the data from the aforementioned prototype, the power required to release the hold is 0. However, if the distance between the movable iron piece 6 of the electromagnet 5 and the fixed magnetic pole is 0.8 mm, approximately 7 W of power and 12 m5 of time are required to electrically re-adsorb the magnet. In terms of energy, it becomes 7 x 12 m5 = near 4 millijoules. The present invention can save such large energy consumption.

As described above, in the embodiment shown in FIG. 1, when the electronic key l is pulled out, the pulling force returns the holding type electromagnet to the holding state, making the inner cylinder 2 unable to rotate, and the lock is in a state where it cannot be locked or unlocked. becomes.

FIG. 6 shows another embodiment. In the method shown in FIG. 6, the push-up rod 10 is pushed up by the rotation of the inner cylinder 2, and the movable iron piece 6 is adsorbed again. The inner cylinder 2 has a shape 7R17 as shown in Fig. 7, and the figure shows the push-up rod 10.
is shown in a lowered state, but when the inner cylinder 2 rotates, the push-up rod IO is pushed upward according to 17, and the movable iron piece 6 is re-adsorbed. At this time, pin 8 is in hole 1
Since the pin 3 has not returned to its original position, it cannot move downward, but the pin 8 is always subjected to downward force by the deflection of the spring 9, and slides on the inner cylinder 2. When the inner cylinder 2 is returned to its original position in order to remove the electronic key l, it enters the hole 13 and fixes the inner cylinder.

Compared to the method shown in FIG. 1, the method shown in FIG. 6 is different from the method shown in FIG. When it is pulled out, the push-up bar 10 remains in the lower position and the pin 8 cannot be moved downward, so the inner cylinder 2 is left free to rotate, which is a disadvantage in that the inner cylinder can be rotated even without a proper key. There is. Of course, this inconvenience is not a drawback if the user is aware of this.

FIG. 8 shows an embodiment using a mechanical holding type electromagnet.

As mentioned above, the operating power of the electromagnet increases in proportion to the square of the length of the air gap between the movable iron piece and the fixed magnetic pole. Therefore, if the pin 8 is moved by an electromagnet with a short gap, power consumption can be reduced. In Figure 8, 18 is a non-polar electromagnet, 19
2 is a movable iron piece, and 20 is a claw attached to the movable iron piece that hooks the pin 8. FIG. 8(a) shows a state in which the claw 20 catches the pin 8 and the inner cylinder 2 cannot be locked or unlocked. In this state, the pin 8 is pushed upward by the spring 12.
Although it is receiving the force of , it is stopped in the lower position by the claw 20. In FIG. 8(b), the electromagnet 18 operates, the claw 20 moves to the left in the figure and comes off the pin 8, and the pin 8 moves upward by the force of the spring and comes out of the hole 13 of the inner cylinder 2 and inside. The cylinder is shown in a state where it can be rotated, that is, locked and unlocked.

FIG. 9 is a simplified sectional view of a cylinder lock using the mechanically held electromagnet 18 of FIG. The travel distance of pin 8 is 2 to 4
Although the distance of movement of the claw 20 is as large as 0.2 to 0.5 mm,
The power consumption of the electromagnet is low because it only needs to be about mm. In order to restore the pin 8 from the state shown in FIG. 8(b) to the state shown in FIG. 8(a), it is manually restored using the method shown in FIG. 1 or FIG. 6. The example shown in FIG. 9 employs the method shown in FIG. 1.

In this way, power consumption can be very low.

(G) Effects of the Invention In the present invention, a force is always applied by a spring to the pin that connects and fixes the outer cylinder and the inner cylinder of the cylinder lock in the direction in which the pin comes out of the inner cylinder, and the pin is pushed against this force. The inner cylinder 2 is held in an unrotatable state by moving and connecting the outer cylinder and the inner cylinder. It is equipped with a magnetic holding form or a mechanical holding electromagnet, and uses electric power only when releasing the holding state, and when returning the pin to the holding state,
By using part of the human power when pulling out the electronic key from the inner cylinder or rotating the inner cylinder, we can eliminate the large amount of power that would be consumed if this were done electrically. This has the effect of drastically reducing the power consumption of the electronic cylinder.

Because it consumes less electricity, it is possible to create small, long-life electronic cylinders with built-in batteries.

In addition, since the amount of power consumption is small, it is possible to create an electronic cylinder that operates by receiving power from a small battery built into the electronic key, which is advantageous in terms of maintenance since it is possible to obtain an electronic cylinder that does not require a power source.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, (a) a simplified sectional view, (b)
) Front view, Figure 2 is a diagram showing the positional relationship between the pin and push-up bar of the cylinder lock, Figure 3 is a sectional view of the inner cylinder taken along line A-B in Figure 1, and Figure 4 is the same as in Figure 1. 5 is a side view showing an example of an electronic key, FIG. 6 is a simplified sectional view showing another embodiment of the present invention, and FIG. 7 is a sectional view of the inner cylinder taken along line CD. 8 is a simplified sectional view showing still another embodiment of the present invention, and FIG. 9 is a cylinder lock using a holding type electromagnet of the shape shown in FIG. 8. In the embodiment shown in FIG. 8, the electromagnet 18 is shown viewed from a direction perpendicular to FIG. 1...Electronic key, 2...Inner cylinder, 3.
...Keyhole, 4...Outer tube, 5,18...
...Holding electromagnet, 8...Pin, 10
...Pushing rod, 12 ...Spring, 1
3...hole, 15.17...groove. Patent applicant: Kokusai Technological Development Co., Ltd. Representative: Dresaku Nakauchi...Electronic key (1-)) 2...
...Inner cylinder 15, 1?・・・・・・Fig. 3 Fig. 4 Fig. 6 Fig. 7 Fig. 8

Claims (1)

[Claims] It consists of an inner cylinder and an outer cylinder that can be rotated by an electronic key.The inner cylinder has a keyhole into which the electronic key is inserted, a hole into which the pin of the outer cylinder enters, and a groove into which the push-up rod of the outer cylinder enters. consists of a pin that enters the hole in the inner cylinder and connects the outer cylinder and the inner cylinder to make the inner cylinder non-rotatable, a spring that biases the pin in the opposite direction to the hole in the inner cylinder, and a spring that forces the pin in the inner cylinder. A holding type electromagnet is connected to the pin and is held in the hole without energizing, and is energized only when the holding is released, and the pin is inserted into the hole of the inner cylinder when coming out of the groove of the inner cylinder. A cylinder lock characterized by having a push-up bar adapted to be inserted.