JP3885202B2 - Multiple electric locks for picking - Google Patents

Description

[0001]
【the purpose】
Provided is an electric lock that prevents unauthorized entry without being unlocked easily even when picking is performed by electric control using a plurality of tablets.
[0002]
【Constitution】
Equipped with an electric drive unit that drives multiple electric locks, a self-holding circuit for holding the locking operation by the electric drive unit, a timer with a time limit count function and a function that closes the contacts when the time limit is reached, When the lock is unlocked, use the time adjustment dial provided on the indoor side of the electric lock, or check whether all the locks have been unlocked within the time limit , which was performed outside the electric lock. With a relay circuit to detect, the timer is activated when one lock is unlocked, and if all the locks are not unlocked within the time limit, the previously unlocked lock is re-locked. Tablets.
[0003]
BACKGROUND OF THE INVENTION
The present invention relates to an electric lock for picking measures made by attaching a plurality of electric lock to one door.
[0004]
[Prior art]
Conventionally, two locks are attached to one door as a plurality of locks (hereinafter referred to as “two or more”), or auxiliary locks are newly added to one existing mechanical lock. A method or a combination of one mechanical lock and one electric lock is widespread. The above method has an advantage that it takes time and effort to unlock for the purpose of preventing unauthorized intrusion, and has the effect of improving crime prevention.
[0005]
[Problems to be solved by the invention]
However, when considered as a countermeasure against picking, in these cases, even if it takes some time and effort to unlock a single lock, if two locks are finally unlocked, they will open and enter. End up. Even an electric lock has a risk of misuse due to external operation. In order to prevent unauthorized intrusion due to such picking, the present invention is provided with a timer having a function of counting a time limit and closing a contact when a time limit is reached , while attaching mainly two electric locks in one door. The time limit can be adjusted using the time adjustment dial provided on the indoor side of the electric lock or from the outside separated from the electric lock. If the lock is not unlocked, a relay circuit is provided in which the previously unlocked lock is locked again . The present invention provides a multiple electric lock for picking measures that solves the above-mentioned conventional problems.
[0006]
[Means for Solving the Problems]
In order to solve this problem, the invention of claim 1 is provided with a plurality of electric locks on a house entrance door, provided with a timer having a time limit counting function and a function of closing a contact when the time limit is reached, To adjust the time, use the time adjustment dial on the indoor side of the electric lock or from the outside separated from the electric lock, and all locks will be unlocked within the time limit of the timer after one lock is unlocked. If not, there is provided a picking countermeasure multiple electric lock characterized in that a relay circuit is formed in which the previously unlocked lock is locked again.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view of an outdoor side front cutout in a locked state according to an embodiment in the vicinity of a plurality of electric locks (the handle 3 is publicly known, so the cross-sectional view is not shown), and FIG. 2 is an indoor side of FIG. It is an external view. FIG. 3 is a partial perspective view of locking / unlocking driving of a plurality of electric locks, and FIG. 4 is an exploded perspective view of a locking / unlocking driving part of the plurality of electric locks.
[0009]
On the outdoor side, lock cylinders 18 and 19 and a handle 3 are provided as shown in FIG. On the indoor side, as shown in FIG. 2, locking / unlocking knobs 36, 37 for locking and unlocking by manual operation, a handle 3, a power connector 54, a timer 29, and a set time adjusting dial 38 for adjusting a time limit are provided. ing. This timer has a time adjustment dial, a time limit count function, and a function that closes the contacts when the time limit is reached, and the time limit adjustment is performed using the time adjustment dial provided on the indoor side of the electric lock. It is also possible to carry out from the outside separated from the electric lock.
[0010]
An embodiment of the electric lock of the present invention will be described with reference to FIGS. The electric lock of the present invention is a manual drive part mainly composed of a lock cylinder and locking / unlocking knob, etc., an electric drive part composed of a motor, etc., a saddle member position detection part composed of a limit switch, a timer, It consists of a control unit consisting of a relay circuit .
[0011]
In FIG. 4, the manual drive unit refers to a part that is manually locked and unlocked using the rotational movements of the lock cylinders 18 and 19 that are locked and unlocked from the outdoor side and the locking and unlocking knobs 36 and 37 that are locked from the indoor side. The manual drive unit is configured such that the fitting projections 42 and 43 coupled to the lock cylinders 18 and 19 in FIG. 3 are connected to the engagement rings 44 and 45 and the engagement cylinders 46 and 47. Therefore, when the lock cylinders 18 and 19 are inserted and rotated, the fitting projections 42 and 43 are rotated, and the engagement cylinders 46 and 47 are caught by the projections 55 and 56 of the engagement rings 44 and 45 with this rotation. Also rotates, causing the cylinder cams 20 and 21 to move in a circular motion (movement in the directions of A and B in FIG. 1).
[0012]
On the other hand, on the indoor side, the rotary shaft protrusions 50 and 51 connected to the locking and unlocking knobs 36 and 37 of FIG. 4 are passed through the holes of the key box 1, and the cylinder cams 20 and 21 are overlapped on the inner side of the key box wall surface. In addition, the shaft holes 48 and 49 opened in the cylinder cams 20 and 21 are further penetrated. Thereby, the rotation shaft protrusions 50 and 51 appear on the inner side of the key box. The rotation shaft projections 50 and 51 have holes through which the fixed support rods 52 and 53 are passed. The key wall 2 and the cylinder cams 20 and 21 are connected to the rotation shaft projections 50 and 51 by the fixed support rods 52 and 53. Support through the hole. As a result, the rotation axis inside the key box has a cross shape, as shown in FIG. The bottom surfaces of the engagement cylinders 46 and 47 have a cross-shaped hole, and are coupled to a cross shape in which the support rods 52 and 53 and the rotation shaft protrusions 50 and 51 are combined.
[0013]
Due to this structure, the cylinder cams 20 and 21 perform an arc motion by the manual locking / unlocking operation of the lock cylinders 18 and 19 and the locking / unlocking knobs 36 and 37, whereby the sliding plates 4 and 5 move horizontally (a in FIG. , B), and the flange members 34, 35 are projected (movement to A, a in FIG. 1) or retracted (movement to B, b in FIG. 1).
[0014]
The electric drive unit is locked again when one of the locks is unlocked and the time limit is reached. In addition, in order to prevent the locking forgetting of one of the tablets, when the one from both of the lock unlocked state has been manually locked, thereby locking the other end of the lock.
[0015]
In the locking operation of the electric drive unit, the rack members 34 and 35 are protruded by operating the rack gears 22 and 23 that mesh with the gears 12 and 13 connected to the shafts 10 and 11 of the electric motors 40 and 41 of FIG. The electric motors 40 and 41 rotate counterclockwise when energized, and manually rotate in both directions when de-energized.
[0016]
The saddle member position detecting unit is turned on immediately after the unlocking operation from the locked state, and the first opening end limit switch 25 and the second opening end limit switch 26 in FIG. The first end limit switch 27 and the second end limit switch 28 that are electrically connected to a completely unlocked state (the end points indicate that the eaves members 34 and 35 are completely retracted, The sliding plates 4 and 5 are positions where the first end limit switch 27 and the second end limit switch 28 are in contact).
[0017]
The relay circuit uses one timer 29 and four relays 31 and 32 with four C contacts, one for each electric lock. The timer 29 is set time adjustment dial 38 for adjusting the set time in the timer body is built as shown in Figure 2, it has a close contact function reaches the time limit and time limit count function, the adjustment of the time limit It is possible to use a time adjustment dial provided on the indoor side of the electric lock or from the outside separated from the electric lock, and the time can be arbitrarily set. The relays 31 and 32 are built in the electric lock as shown in FIG. 1 to form a self-holding circuit that drives the operation of the electric motors 40 and 41 accompanying the locking operation until they are completely locked. Both unlocking determination circuits for determining whether or not unlocked are formed.
[0018]
In order to describe the operation of the electric lock of the present invention in more detail, it will be described with reference to FIGS. FIG. 6 (a) shows a locked state, (b) shows a state where the electric lock on one upper side is being unlocked or is being locked, and (c) shows a state where it is completely unlocked. Show.
[0019]
First, if the upper lock is to be unlocked, the cylinder cam 20 starts to move in the direction B in FIG. 6B from the locked state (a) by the cylinder lock 18 and the unlocking pin 36. Along with this, the drive pin 8 is fitted into the cam groove 4b to move the sliding plate 4 and moves in the direction b of FIG. 6B. In the middle of this operation, the protrusion 4d comes into contact with the first opening end limit switch 25 and is conducted. After that, the protrusion 4c is caught by the leaf spring 16, and when the protrusion 4c exceeds the protruding portion of the leaf spring 16 and is in the completely unlocked state (c), the sliding plate 4 is held and the end limit switch 27 is pushed to unlock. Completed. The other lower lock performs the same operation.
[0020]
This state transition will be described electrically. FIG. 7 shows an electric circuit diagram according to an embodiment of the electric lock of the present invention, which is composed of one timer, two relays, and limit switches of each electric lock.
[0021]
7, a and c are self-holding circuits for both electric locks, b and d are electric drive circuits, and e is a both unlocking determination circuit. 7, 31 and 32 correspond to relay coils, and 29 corresponds to a timer coil. 31a and 32a of each relay are A contacts, the normal contacts are open, and the contacts close when each coil is energized. Reference numerals 31b and 32b are B contacts, and the normal contacts are closed. When the coils are energized, the contacts are opened. When the timer 29 is energized, the set time is counted and the contact is closed after the count is completed.
[0022]
The self-holding circuits a and c mainly serve to start the electric drive circuits b and d and continue to drive the electric motors 40 and 41 until the electric lock is completely locked. Both unlocking discriminating circuit e starts a timer 29 when it is only unlocked one electric lock, both electric lock is either locked state, when the unlocked state has become a relay circuit not start .
[0023]
First, in the unlocking state (b) in FIG. 6, the open end limit switch 25 becomes conductive, and when the complete unlocking state (c) is reached, the end limit switch 27 also becomes conductive. The coil of the relay 31 of a is energized, and all the contacts of 31a are closed, and are in a self-holding state.
[0024]
In the unlocking determination circuit e in FIG. 7, the contact 31a is closed and the contact 32b is a B contact. Therefore, the timer contact that is directly connected to the electric motors 40 and 41 is energized by the coil of the timer 29. Close after. Accordingly, the electric motor 40 is driven by a current flowing through the closed contact 31a and the closed timer contact in the electric drive circuit b. The electric motor 41 is not driven because the contact 32a is not closed.
[0025]
In other words, the timer is energized only when one of the electric locks is unlocked, and only the unlocked electric motor is driven after the set time has elapsed.
[0026]
The sliding plate 4 in FIG. 6B enters the locking operation by the rotation of the driven electric motor, and the meshing gear 12 rotates counterclockwise, so that the opening end side (direction a in FIG. 6B) Move to). Therefore, since the end limit switch 27 is separated from the sliding plate 4, the end limit switch 27 becomes non-conductive. However, since the first open end limit switch 25 is still in contact with the protrusion 4d, the contact 25 of the self-holding circuit a in FIG. 7 is closed and the contact 31a is also closed, so that a current flows through the coil and the self-holding state is reached. The electric motor 40 still continues to be driven.
[0027]
When the protrusion of the leaf spring 16 is passed and the locked state shown in FIG. 6A is restored, the first opening end limit switch 25 becomes non-conductive for the first time, the self-holding circuit a is released, and the electric motor 40 stops. .
[0028]
Similarly, when only the lower electric lock is unlocked, the first opening end limit switch 26 is turned on in the middle of the unlocking state, and the terminal limit switch 28 is turned on in the fully unlocked state. A current flows through the coil of the relay 32, all the contacts 32a are closed, and the self-holding circuit c is activated. Therefore, the coil of the timer 29 is energized through the closed contact 32a and the B contact 31b of both unlocking determination circuits e, and the timer contact is closed after the set time, and the electric motor 41 of the electric drive unit d is driven.
[0029]
In the locked state, the self-holding circuit c is activated until the first opening end limit switch 26 is turned off, so that the electric motor 41 continues to rotate. When the first opening limit switch 26 is turned off, the self-holding circuit c is released and the electric motor 41 is released. Stops.
[0030]
In order for both of the electric locks of the present invention to be completely unlocked, a timer is started when one of the electric locks is unlocked, and the other electric lock is unlocked within a preset time. There must be. The operation in this case will also be described with reference to FIGS.
[0031]
In the state where one of the upper electric locks is unlocked, that is, in the state where the self-holding circuit a in FIG. 7 is activated and the contact 31a is closed and 31b is opened, both unlocking determination circuits e are activated and the timer 29 is energized. In the middle, the set time is being counted, and the electric motor does not rotate because the timer contact is not closed yet. By completely unlocking the lower electric lock within the set time, the second opening end limit switch 26 and the second end limit switch 28 are brought into conduction, and the self-holding circuit c in FIG. 7 is activated. Therefore, all the contacts 32a are closed, but both the B contacts 31b and 32b of both unlocking determination circuits e are opened, so that the timer 29 is not energized, the set time is stopped, the timer contact is not closed, Both electric motors 40 and 41 do not rotate. Therefore, both electric locks are completely unlocked.
[0032]
When both electric locks are locked from the unlocked state, one of the electric locks may be locked. When both electric locks are in the unlocked state, both unlocking determination circuits e are in a state in which the A contacts 31a and 32a are closed and the B contacts 31b and 32b are in an open state. Is not energized.
[0033]
If the upper electric lock is manually locked, the first terminal limit 27 becomes non-conductive when the key is first turned, and the first open end limit switch 25 becomes non-conductive when fully locked, and at the same time, the upper electric lock. Is complete. At this moment, the self-holding circuit a in FIG. 7 is released, all the contacts of the relay 31a are opened, and the contacts of 31b are closed.
[0034]
When the upper electric lock is in the locked state, the contact point 32a remains closed, so that the timer 29 is energized via 32a and 31b in both unlock determination circuits e. Accordingly, the timer contact is closed, the electric drive circuit d in FIG. 7 is started, and the electric motor 41 is rotated. By locking one of the electric locks, the other electric lock is also locked, and all the locks are completed in one lock operation.
[0036]
By leaving this way the time setting, even if being above the lock is unlocked by picking, while picking operation the lower lock, the lock of the upper again time set locked Therefore, in order to open the door, the upper lock must be unlocked again, so that enormous time and labor must be expended and unlocking becomes impossible.
[0038]
【The invention's effect】
The present invention as described above, in claim 1, by picking unlocking one lock, in the set time limit, unless picking unlock the other tablets, tablets and unlocking earlier Since it is locked, it must be unlocked again, and it takes time and effort that cannot be compared with the conventional multiple tablets . Moreover, since the only thing that can be seen from the outside is the handle and the hole into which the two keys are inserted, the configuration that the time limit is set should not be known from third parties, and it is possible to prevent misuse operation, Unauthorized intrusion can be surely prevented .
[0040]
Furthermore, this electric lock is equipped with a timer with a time adjustment dial, a time limit count function, and a function that closes the contacts when the time limit is reached, so that the resident gives time to picking in time. The time limit can be adjusted using the time adjustment dial provided on the indoor side of the electric lock or from the outside separated from the electric lock. For example, when installed outdoors Adjusted the time in an unseen area, and when the resident is out of the office, set the time limit to less than 1 second from the outside, maintaining high crime prevention and installing it indoors In this case, the time limit can be set from the indoor side when the resident is at home for a long time or when sleeping at night, etc., so that the same effect as the outdoors can be obtained, and a high crime prevention effect can be obtained for various uses. Moreover, since the only thing that can be seen from the outside is the handle and the hole into which the two keys are inserted, the configuration in which the time limit is set cannot be known from a third party, and the abuse of the electric lock of the present invention can also be prevented. , You can reliably prevent unauthorized intrusion.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an outdoor-side front cutout in a locked state according to an embodiment of the present invention in the vicinity of a plurality of electric locks.
FIG. 2 is an external view of the indoor side of the multiple electric lock of the present invention.
FIG. 3 is a partial perspective view of a locking / unlocking drive portion of a plurality of electric locks of the present invention.
FIG. 4 is an exploded perspective view of a locking / unlocking drive component for a plurality of electric locks of the present invention.
FIG. 5 is an assembly perspective view of a locking / unlocking drive component for a plurality of electric locks of the present invention.
FIG. 6 is a state transition diagram by locking / unlocking one electric lock (upper part) using FIG. 1, showing (a) locked state, (b) unlocking / unlocking progress state, and (c) unlocking state. .
FIG. 7 is an electric circuit diagram according to an embodiment of the multiple electric lock of the present invention.
[Explanation of symbols]
1 tablet box 2 tablets wall 3 handles 4,5 sliding plate 4a, 5a orbital hole 4b, 5b cam grooves 4c, 5c projections 4d, 5d projections 6,7 supporting pins 8, 9 the drive pin 10, 11 shaft 12, 13 gears 14, 15 leaf spring support rod 16, 17 leaf spring 18, 19 lock cylinder 20, 21 cylinder cam 22, 23 rack gear 24 support base 25 first open end limit switch 26 second open end limit switch 27 first end limit switch 28 second terminal limit switch 29 timer 31, 32 relay 31a, 32b relay A contact 31b, 32b relay B contact 34, 35 rod member 36, 37 locking / unlocking knob 38 set time adjustment dial 40, 41 electric motor 42, 43 fitting Projection 44, 45 Engagement ring 46, 47 Engagement cylinder 48, 49 Shaft hole 50, 51 Rotating shaft projection 52, 53 Fixed support rod 54 Power connector 5,56 projections

Claims (1)

A plurality of electric locks are provided for a house entrance door, and the plurality of electric locks are provided with a timer having a time limit counting function and a function of closing a contact when the time limit is reached. Use the time adjustment dial provided on the indoor side of the lock or from the outside separated from the electric lock, and if all locks are not unlocked within the time limit of the timer after one lock is unlocked, A plurality of picking countermeasure electric locks characterized in that a relay circuit is formed in which a previously unlocked lock is locked again.

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