JPS5938469A - Electric 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] The present invention uses electric power to create dead bolts (hereinafter referred to as bolts).
Concerning electric locks for putting in and taking out items.

Traditional locks require a deadlocking bar (
(hereinafter referred to as a bar) is operated entirely electrically, the bolt is pushed out by the force of a spring, and when retracting it, the knob is often turned fully by hand.

In addition, when locking a hotel or emergency exit, etc., when going from inside to outside,
It would be desirable to be able to get out even when the door is locked by simply turning the manual knob without the need for a key.

In this case, if the lock can be unlocked by turning an external knob and one can enter the interior without a key, it is useless as a lock. Therefore, when entering from the outside, it is effective to use an unlock signal such as a magnetic card to draw in the port electrically, but it is necessary to install a new power source such as a motor or electromagnet to insert and remove the bolt. .

An object of the present invention is to provide a lock with a simple structure and high security performance, which uses only one power source to perform the locking/unlocking operation and the locking/unloading operation, which are conventionally performed using multiple power sources. shall be.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a simplified side sectional view showing the structure of an embodiment of the present invention;
FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 6 is an explanatory diagram of the operation of the lock. In Figures 1 to 3, 1 is an outer casing, 2 is a bolt, 3 is a bar, 4 is a pillar that guides and supports the bar 3, 5 is a lever that moves the bar 3 upward, and 6 is a bar 6
Spring 7 moves lever 5 clockwise (
f This lever, 8 is a pawl, 9 is a toothless pinion, 10 is a circumferential embedded gear, and pawl 8. Missing tooth pinion9. Built-in gear 1
0 together constitute a toothless pinion mechanism with pawl (hereinafter referred to as pinion mechanism) 11. 12 is the motor, 1
6 is a pinion fixed to the output shaft of the motor 12, which is engaged with the circumferential implanted gear 10 and is rotated by the rotation of the motor 12.
Rotate the pinion mechanism 11 gold clockwise.

The second tooth from the leftmost end is removed from the toothless rack that pushes out the 14fd bolt 2, and the number of teeth that mesh with the toothless pinion 9 is implanted. 15 is a toothless rack 14 and a guide for the bolt 2;
16 is a guide for the hub bolt 2; 17 is a spring that pulls the bolt 2 all the way to the right, that is, back into the outer casing 1; and 1B is a sensor that detects whether the door is open or closed.

The solid line in Figure 1 and the solid line in Figure 1A) show the state in which the bar 6 is moved upward, the bolt 2 is pulled back to the right by the spring 17, hits the outer casing 1, and the door is opened. . At this time, the door can freely enter the stile, which is not shown. When the door is closed from this state, the sensor 1B operates and sends electricity to the motor 12.

This type of sensor can be easily obtained by using, for example, a reed switch and attaching a magnet to a frame (not shown).

Then, the motor 12 rotates, and the pinion mechanism 11 rotates clockwise. At this time, since the second tooth from the left end of the toothless rack 14 is missing, the leading edge of the tooth smoothly enters in the direction of rotation of the toothless pinion 9, and the tooth surface in the direction of movement is the tooth surface of the toothless rack 14. Press the right tooth surface of the leftmost edge. This state is shown in FIG. 6<b). Since the pinion mechanism 11 continues to rotate further, the toothless rack 14 is pushed to the left and advances to the state shown in FIG. 6+, c). At this time, the sixth tooth from the tip of the missing tooth pinion 9 starts to engage with the sixth tooth from the left of the missing tooth rack 14 (the missing tooth is also included in the count), so from then on, the tooth engages smoothly, and the tooth Missing rack 14
That is, the bolt 2 is pushed to the left, and the bar 3 is pushed downward by the force of the spring 60 and enters between the bolt 2 and the column 4, deadlocking the bolt 2 and putting the bolt 2 in a locked state. The bolt 2 enters a strike provided in a frame (not shown) and fixes the door in a closed state. This state is shown by the dotted line in FIG. 1 and the solid line in FIG. 6(d).

To turn off the power to the motor 12, a not-shown setter detects the rotational position of the pinion mechanism 11 when the tip of the last tooth of the toothless pinion 9 has completely escaped from the rightmost tooth tip of the toothless rack 14. I'll attach it. This state is called the fully normal locked state.

This type of sensor can be easily obtained, for example, by attaching a magnet to the pinion mechanism 11 and operating a reed switch (not shown).

In this state, unlocking using an external key is performed as follows. A suitable key is a magnetic card, a numeric key switch, or a key that emits a well-known electrical signal.When these electrical signals are judged to be legitimate by a judgment circuit (not shown), electricity is sent to the power supply motor 12. . Then, the pinion mechanism 11 rotates in the training direction, and the pawl 8 rotates the lever 7 counterclockwise from the position 8' in FIGS. Pull up the bar 3' (r) against the
deadlock is released. At this time, Figure 6 (,
d) As shown by the solid line, the toothless rack 14 is connected to the toothless pinion 9
The bolt 2 can be pulled back to the right by the force of the spring 17, resulting in the state shown by the solid line in Figure 1 and the solid line in Figure 6 1:a, that is, the unlocked state, and the door can be opened freely. Become. The power supply to the motor 12 is cut off by detecting the rotational position of the pinion mechanism 11 when the sensor C support 8 (not shown) completely escapes from the lever 7. This state is called a normal unlocked state.

This type of sensor is energized as described above.

Next, to unlock from the inside, proceed as follows. By fully rotating the unlocking knob (not shown) located only inside, the lever 5 is mechanically rotated clockwise, and the bar 3
When pushed up, the bolt 2 is pulled back by the spring 17, and the lock becomes unlocked as shown by the dotted line in FIG. 3(d), and the door can be opened freely.

However, since the pinion mechanism 11 is 1 inch as shown in FIG. 6(d), it must be moved to the solid line in FIG. 6(a), that is, the normal unlocked state. Therefore, for example, the rotation of the knob rotated to unlock the door may be detected and the motor 12 may be energized. Then, the pinion mechanism 11 rotates clockwise, and the above-mentioned sensor operates in the state shown by the solid line in FIG.

Now, in order to ensure safety in locks for hotels and emergency exits, it is necessary for bolt 2 to protrude more than 120 mm.

In Fig. 6, for example, the original number of teeth of toothless pinion 9 is 20.
, Mo, Joule M'! 'j[1B, effective number of teeth ni
If 7 is selected as shown in the figure, the toothless rack 14 has moved about 8.5 peaks as shown, so the amount of protrusion of the bolt 2 is as shown in equation (1).

L = 8.5 m2 21.4 mm...
(g, that is, a sufficient amount of protrusion).

The rotation angle θ of the toothless pinion 9 required for this is 153°, but even if it is slightly increased so that the last tooth tip of the toothless pinion 9 completely escapes as shown in Fig. 6(d), the rotation angle θ is 160°.
in ° - minutes.

Next, the rotation angle required for the claw 8 varies depending on the amount of push-up of the bar 6, the structure of the levers 5 and 7, the installation radius of the claw 8, etc., but the rotation angle that the claw 8 can secure is the one with the structure shown in Figure 6. At most 1
200 (in the case of FIG. 6, approximately 70"f is sufficient).

That is, one rotation of the toothless pinion 9 can secure a sufficient amount of extrusion of the bolt 2 and complete the unlocking and locking operations.

Also, for convenience of explanation, the teeth in the front and rear of the toothless rack 140 have been explained as being missing, but there may be teeth in this portion.Furthermore, the teeth of the toothless rack 14 are not missing over the entire length, but can be formed into a toothless pinion. Even with a combination in which the second tooth is omitted from the direction of rotation of No. 9, the above-mentioned operation can be sufficiently performed and the objective can be achieved.

FIG. 4 is a simplified side sectional view showing the structure of another embodiment 1+1 of the present invention, and FIG. 5 is a simplified side sectional view illustrating the rotational operation of the pinion mechanism.

In Figures 4 and 5, 19 is a deadlocking lever (hereinafter referred to as a lock lever) used in place of the bar 6.
, 20 is a rotating shaft of the lock lever 19, which also serves to support the force applied to the lock lever during locking. 21 is a lever that can be rotated clockwise by the lock lever 19;
2 is a serrated gear used in place of the circumferential implanted gear 10;
20 is a latch type stepping motor; 24 is a cylindrical yoke; 25 is a fixed yoke; 26 is a movable yoke;
The latch type stepping motor 23 is entirely composed of a coil 7, a spring 28, and a leaf spring 29 for stepping. Each time a DC pulse is applied to the coil 27, the stepping leaf spring 29
advances the serrated gear 22 one tooth at a time. Therefore, coil 2
By continuously applying DC pulses to the pinion mechanism 11, the pinion mechanism 11 can be rotated clockwise. 3D is serrated gear 2
2, the pinion mechanism 1 is replaced with a latch-type stepping motor 23 for the entire power source motor 12 in Figures 4 and 5.
1, the entire bar 6 is replaced with the lock lever 19, the bolt 2 is engaged and unlocked, the lever 5 is removed, and the movement of the pawl 8 is transmitted to the lock lever 19 by the lever 21. The basic operation is the same as that shown in FIGS. 1 to 3.

If the control levers 5 and 7 or 19 levers are removed and the movement of the pawl 8 is directly transmitted to the bar 6 or the lock lever 19, the basic operation remains the same and the structure becomes simpler.

Until now, the rotation of the pinion mechanism 11 has caused the toothless rack 14 to
That is, the bolt 2 is pushed out and pulled in by the force of the spring 17, but this is reversed and the pinion mechanism 11
The bolt 2 may be retracted in one turn, and the bolt 2 may be pushed out by the spring force.

In this case, when the bolt is pulled in by turning the pinion mechanism 110 times, the hook will hook it and keep the bolt 2 in the internal position, and when the door enters the stile, the force of the magnet attached to the stile will remove the hook and cause the bolt 2 to pop out. Just do it like this.

Furthermore, the locking and unlocking states are detected by the rotation angle of the pinion mechanism 11, which is detected by the pole of the bolt 2.

Detection may be performed at the unlocked position. In this case, even if the bolt 2 moves to the locking/unlocking position, there is a possibility that the pinion mechanism 11 will not reach the normal locking/unlocking position. This is the result of Bolt 2.

After detecting the unlocked position, it is necessary to delay until the pinion mechanism 11 reaches the normal locking/unlocking position.

As described above, the lock of the present invention has a simple structure, but since the lock can be unlocked within one rotation of the pinion mechanism, it has many good effects as described below.

(1) Only one power source is sufficient.

(λ) The rotation direction of the power source may always be in the same direction.

(3) By setting the bolt extrusion amount f to 2Qmm or more, it is easy to greatly improve the security performance.

(&) When opening the door υ from inside using the rotary knob to go outside, there is no need to wait until the pinion mechanism 11 reaches the normal unlocked position, so safety is high.

As described above, the lock of the present invention has a simple structure, has many features, and can provide a lock with high crime prevention and safety, and its economical effects are significant.

[Brief explanation of drawings]

FIG. 1 is a simplified side sectional view showing the structure of an embodiment of the present invention;
Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Fig. 6 is an explanatory diagram of the operation of this electric lock, Fig. 4 is a simplified side sectional view showing the structure of another embodiment of the present invention, and Fig. 5 is It is a simplified side sectional view explaining rotation operation of a pinion mechanism. 1...Outer casing, 2...Dead bolt, 3...
...Deadlocking bar, 6...Spring, 11...Toothless pinion mechanism with pawl, 12...
・Motor, 14...Toothless rack, 17...
...Tin link, 1B...Sensor, 19...
・Deadlocking bar, 23... Latch type stepping motor.

Claims (1)

[Claims] (1) An outer casing, a deadbolt provided within the outer casing,
An electric lock having a spring that biases the deadbolt, a deadlocking bar or lever that is electrically operated to lock or unlock the deadbolt, and a slider that biases the deadlocking bar or lever, The dead bolt is equipped with a rack mechanism for pushing out the dead bolt, and a tooth-less pinion mechanism with a claw having a claw and a tooth-less pinion. Activate the locking bar or lever and make one rotation of the pawl and toothless pinion mechanism! W
'i + An electric lock characterized in that it is configured such that the unlocking operation is completed. (2) The first aspect of the present invention is characterized in that the rotation of the pawl and toothless pinion mechanism is operated by a monitor.
Electric lock as described in section. (6) The 71 Genki lock according to claim 1, wherein the rotation of the toothless pinion mechanism with claw is operated by a latch type stepping motor.