Electronic lock control method and electronic lock based on the control method

Abstract

The present invention discloses a control method for an electronic lock and an electronic lock based on the control method, which have a simple structure. The snap hole on the handle is controlled jointly by the telescopic body of the electromagnet located on the lock body base and the push rod controlled by the unlocking mechanism, and the telescopic body of the electromagnet is made to have the characteristic of power-off self-holding function by using the first permanent magnet, thereby solving the automatic unlocking function required by the electronic lock and solving the hidden danger of illegal unlocking through the mechanical structure. At the same time, the power consumption of the electronic lock when preventing illegal unlocking can be greatly reduced, which can meet the market's technical requirements for electronic locks and has a high promotion value.

Description

Technical Field

[0001] The invention relates to an electronic lock, and in particular to an electronic lock control method and an electronic lock based on the control method. Background Art

[0002] With the development of information technology, industrial cabinets with various electrical equipment installed have been widely used; and with the application of various cabinet electronic locks. China's patent application announcement number CN 107143208A "Slider avoidance mechanism and limited opening electronic lock thereof" lists an industrial cabinet electronic lock that realizes key control through a slider avoidance mechanism. It relies on a motor to drive the slider and senses the position of the slider through multiple photoelectric sensors. When the power supply fails, the motor moves through the power stored in the capacitor on the circuit board to drive the slider to release the key control, thereby realizing automatic unlocking and key control.

[0003] However, in this lock, the motor itself cannot operate stably and reliably, and the photoelectric sensor switch must remain in working condition. The daily power consumption of the electronic lock itself is high, and when the electronic control system fails, it is very likely that the motor cannot be controlled to open the electronic lock, resulting in the failure of the desired abnormal state unlocking function. There are extremely high safety risks in the promotion and application, and it is not suitable for industrial applications. Therefore, a new electronic lock construction method is needed to solve the requirement that the electronic lock cannot be opened by a mechanical key when the electronic lock is working normally. Summary of the invention

[0004] In order to overcome the above shortcomings, the purpose of the present invention is to provide an electronic lock control method and an electronic lock based on the control method to the art, so as to solve the above technical problems existing in the existing electronic lock design. The purpose is achieved through the following scheme.

[0005] A method for controlling an electronic lock, the electronic lock comprising a lock body, a lock opening tool, an electromagnet and a first permanent magnet;

[0006] The electromagnet includes an electromagnetic coil, a telescopic body and a force-applying structure. When the electromagnetic coil is energized in the forward direction, it can drive the telescopic body or drive the force-applying structure to drive the telescopic body to retract; when the electromagnetic coil is energized in the reverse direction, it can drive or can drive the telescopic body together with the force-applying structure to extend;

[0007] In the initial state, the electromagnet is in a power-off state or a reverse power-on state, the telescopic body of the electromagnet is extended and held, and the telescopic body clamps the lock body, or the clamping block connected to the telescopic body of the electromagnet is extended and clamps the lock body, so that the lock body cannot be opened, and the electronic lock is in a locked state;

[0008] If the electronic lock receives an unlocking command and needs to automatically open the electronic lock, the electromagnet is powered in a positive direction to retract the telescopic body, and the first permanent magnet located in the lock body adsorbs the telescopic body / card block in the retracted state; the telescopic body / card block in the retracted state releases the card state of the lock body, so that the lock body is opened and the electronic lock is automatically opened;

[0009] If the unlocking action is performed by the unlocking tool, the unlocking tool first buckles the lock body so that the lock body cannot be opened; when the unlocking action is continued, the unlocking tool pushes the telescopic body / block to retract, and the telescopic body / block releases the buckling state of the lock body; during this process, the unlocking tool remains in the buckling state of the lock body, and the lock body still cannot be opened; the following step A, or step B, or step C is performed;

[0010] Step A: At this time, if the electronic lock has an electronic fault or has received an unlocking instruction, or the electronic lock has received a release instruction to release the anti-unlocking tool, the electromagnet is in a power-off state or remains in a power-off state, and the first permanent magnet located in the lock body absorbs the retracted telescopic body / block; when the unlocking tool further performs an unlocking action or a reverse unlocking action, the lock body is gradually unlocked, while the telescopic body remains in a retracted state; when the unlocking tool completely releases the lock body, the lock body is opened, and the electronic lock is unlocked by the unlocking tool;

[0011] Step B: If the electronic lock senses that the unlocking action by the unlocking tool is illegal, the electromagnet is reversely powered, so that the first permanent magnet cannot absorb the telescopic body / block in the retracted state; when the unlocking tool further performs the unlocking action, or performs the reverse unlocking action, and gradually releases the buckling state of the lock body, the telescopic body extends and clamps the lock body due to the action of the electromagnet, or the telescopic body extends and clamps the lock body due to the action of the electromagnet; then execute step D;

[0012] Step C: If the electronic lock senses that the unlocking action performed by the unlocking tool is illegal; when the unlocking tool further performs the unlocking action, or performs the reverse unlocking action, the locking state of the lock body is gradually released, and the unlocking tool is now separated from the telescopic body / block; before the unlocking tool has completely released the locking state of the lock body, the electromagnet is reversely powered, so that the first permanent magnet cannot absorb the telescopic body / block in the retracted state, and the telescopic body extends out and clamps the lock body with the action of the electromagnet, or the telescopic body extends out with the action of the electromagnet and is clamped by the block connected to the telescopic body; then, step D is executed;

[0013] Step D: When the unlocking tool completely releases the lock body, the lock body is still locked by the telescopic body, and the lock body cannot be opened. The electronic lock is illegally unlocked by the anti-unlocking tool.

[0014] Preferably, the unlocking tool comprises a key, a lock cylinder, a knob, a button, or a combination of a corresponding mechanical structure and a key / lock cylinder / knob / button;

[0015] The said if the unlocking action is performed by the unlocking tool, the unlocking tool first locks the lock body so that the lock body cannot be opened, refers to that when the unlocking action is performed by the key, or the lock cylinder, or the knob, or the button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button, the movement of the key, or the lock cylinder, or the knob, or the button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button first locks the lock body so that the lock body cannot be opened;

[0016] When the unlocking action is continued, the unlocking tool pushes the telescopic body / block to retract, which means that when the unlocking action is continued, the telescopic body / block is retracted by the movement of the key, the lock cylinder, the knob, the button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button;

[0017] The step of gradually releasing the latching state of the lock body when the unlocking tool further performs the unlocking action or the reverse unlocking action refers to the step of gradually releasing the latching state of the lock body by the movement of the key, lock cylinder, knob, button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button when the unlocking action is further performed or the reverse unlocking action is performed.

[0018] Preferably, the force-applying structure is a telescopic body spring or a second permanent magnet; the telescopic body connection force-applying structure is a telescopic body connected to a telescopic body spring, and when the telescopic body is in a retracted state, the telescopic body spring applies a downward force to the telescopic body, and at this time the telescopic body is composed of a material that can be attracted by magnetic force; or the telescopic body connection force-applying structure is a second permanent magnet installed on the telescopic body, and when the telescopic body is in an extended state, the second permanent magnet repels the magnetism of the first permanent magnet, thereby keeping the telescopic body in an extended state, and when the telescopic body moves upward to a retracted state, the second permanent magnet generates a magnetic attraction force with the first permanent magnet as it moves relative to the first permanent magnet, thereby keeping the telescopic body in a retracted state.

[0019] An electronic lock based on the electronic lock control method, the electronic lock comprising a lock body, an unlocking tool, an electromagnet installed in the lock body and a first permanent magnet, the lock body comprising a lock body base and a handle, the unlocking tool comprising an unlocking mechanism composed of a key, a lock core, a knob, or a button and a corresponding mechanical structure composed of a push rod;

[0020] The electromagnet includes an electromagnetic coil, a telescopic body and a force-applying structure, wherein the telescopic body is placed in a telescopic body moving hole of the electromagnetic coil;

[0021] The handle is provided with a buckle hole, which is an integral through hole, or is divided into an upper buckle hole cooperating with the telescopic body and a lower buckle hole cooperating with the push rod;

[0022] When the electronic lock is closed at the lock body base, when the unlocking tool is used to unlock the lock, the movement of the unlocking mechanism drives the push rod to move up / down, and the push rod locks the handle, making the handle unable to be opened;

[0023] The electromagnet, the unlocking mechanism and the push rod moved under the control of the unlocking mechanism are installed in the lock body base.

[0024] The push rod is controlled by the unlocking mechanism to move in the telescopic direction of the telescopic body; when the push rod moves relatively close to the telescopic direction of the telescopic body, it pushes the telescopic body in the extended state to the retracted state;

[0025] When the telescopic body in the extended state or the push rod in the extended state is located in the buckle hole at the corresponding position on the handle, the handle is in the closed state; when the telescopic body and the push rod in the retracted state are completely detached from the buckle hole, the handle is in the open state;

[0026] The first permanent magnet is installed in the lock body base or the electromagnet, and is used to maintain the retracted state when the telescopic body is retracted;

[0027] The force applying structure applies force to the telescopic body, and can maintain the telescopic body in an extended state when the telescopic body is extended.

[0028] Preferably, a card block is connected to the lower end of the telescopic body of the electronic lock;

[0029] When the telescopic body in the extended state is located in the buckle hole at the corresponding position on the handle, the handle is in the closed state, which means that when the telescopic body in the extended state drives the clamping block to extend and is clamped in the buckle hole through the clamping block, the handle is in the closed state;

[0030] When the telescopic body and the push rod are completely disengaged from the buckle hole when they are retracted, the handle is in the open state; it means that when the telescopic body is retracted and the block is retracted, the push rod is also disengaged from the buckle hole at the same time, the handle is in the open state.

[0031] Preferably, the electronic lock also includes a reset tongue and a reset spring installed on the lock body base; when the handle is closed in the lock body base, the lower end of the reset tongue abuts against the inner wall of the handle or the outer wall of the buckle hole, and the reset spring located between the reset tongue and the lock body base is compressed or stretched; the reset tongue cooperates with the telescopic body, and when the telescopic body is retracted and the handle is out of the lock body base, the reset spring pushes the reset tongue to make the telescopic body move downward.

[0032] Preferably, the reset tongue cooperates with the telescopic body, and when the telescopic body is in a high position and the handle is out of the lock body base, the reset spring pushes the reset tongue to make the telescopic body move downward; it means that the telescopic body moving hole is a through hole, and when the telescopic body is retracted, its upper end passes through the upper end of the telescopic body moving hole, and when the handle is closed in the lock body base, the reset tongue does not affect the movement of the telescopic body; when the handle is out of the lock body base, the reset tongue moves downward under the push of the reset spring, and pushes the upper end of the telescopic body to make them move downward together, and the telescopic body extends;

[0033] Alternatively, when the handle is closed in the lock body base, the portion of the telescopic body outside the telescopic body moving hole of the electromagnetic coil is not affected by the reset tongue when the telescopic body is retracted; when the handle is separated from the lock body base, the reset tongue moves downward under the push of the reset spring, and pushes the portion of the telescopic body outside the telescopic body moving hole to move downward together, and the telescopic body extends.

[0034] Preferably, the electronic lock further comprises at least one induction switch installed in the lock body base for inducing the unlocking operation using the unlocking tool, wherein the induction switch is a touch switch, or an electromagnetic induction switch, or a contact switch, or a light-sensitive induction switch, or a micro switch, or a combination of the above switches;

[0035] The at least one induction switch is used to sense the unlocking operation performed by the unlocking tool, which means that the one or more induction switches sense the rising / falling movement of the push rod, or sense the upward / downward movement of the telescopic body, or sense the upward / downward movement of the reset tongue under the action of the unlocking tool or the push rod, or sense the action occurring when the unlocking key is inserted, the lock cylinder or knob on the handle is rotated, or the button is pressed;

[0036] Alternatively, the at least one induction switch is used to sense the unlocking operation performed by the unlocking tool, which means that after one or more induction switches are triggered by the upward movement of the push rod or the upward movement of the reset tongue, one or more of the induction switches are restored from the triggered state to the untriggered state when the push rod or the reset tongue moves downward; or it means that after one or more induction switches are de-triggered by the upward movement of the push rod or the upward movement of the reset tongue, one or more of the induction switches are triggered when the push rod or the reset tongue moves downward.

[0037] Preferably, the electronic lock also includes a control circuit board; the control circuit board is connected to the electromagnetic coil and is responsible for supplying power to the electromagnetic coil in the forward or reverse direction; the control circuit board is connected to the induction switch and is responsible for receiving the induction signal of the induction switch; when the unlocking tool performs an unlocking action and triggers / untriggers the induction switch, the control circuit board determines whether the action of the unlocking tool is an illegal unlocking action. If it is determined to be an illegal unlocking action, the electromagnetic coil is reversely energized or remains reversely energized; if it is determined to be a legal unlocking action, the electromagnetic coil is forwardly energized or de-energized.

[0038] Preferably, one end of the handle is movably connected to the lock body base, the buckle hole is located at the other end of the handle, and the handle can be opened with the connection with the lock body base as the axis; or the handle is completely separated from the lock body base.

[0039] The electronic lock control method of the present invention and the electronic lock based on the control method have a simple and reliable electronic lock structure, and cleverly utilize the unlocking tool, the electromagnet and the first permanent magnet, and utilize the unlocking tool and the telescopic body of the electromagnet to jointly control the buckle hole of the lock body to achieve automatic unlocking and prevent illegal unlocking, and at the same time have the purpose of unlocking through the unlocking mechanism in the event of any electronic failure; and through the unique control method, a low power consumption solution of the electronic lock can be further realized, and in the application of the electronic lock, it has a high application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the exploded structure of a lock used in industrial occasions in the present invention;

[0041] Figure 2 yes Figure 1 Schematic diagram of the overall structure when the middle lock is closed;

[0042] Figure 3 yes Figure 1 Schematic diagram of the overall structure when the middle lock is opened;

[0043] Figure 4 yes Figure 2 Schematic diagram of the internal structure of the middle lock when it is closed;

[0044] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure of part A;

[0045] Figure 6 It is an enlarged structural diagram of part A when the lock is automatically opened;

[0046] Figure 7 It is an enlarged structural diagram of part A when the key is inserted into the lock cylinder and the push rod is pushed upward;

[0047] Figure 8It is an enlarged structural diagram of part A when the push rod pushes the iron core to retract;

[0048] Fig. 9 It is an enlarged structural diagram of part A when the push rod moves downward after the iron core is retracted and the induction switch is still triggered;

[0049] Fig.10 It is an enlarged structural diagram of part A when the iron core is stuck in the buckle hole after the induction switch is released;

[0050] Fig.11 It is a flow chart of an electronic lock control method;

[0051] Fig.12 It is a flow chart of another electronic lock control method.

[0052] The names of the serial numbers in the figure are:

[0053] 101, lock body base, 102, lock core hole, 103, lock core, 104, key, 105, push rod, 106, fixing frame, 107, gear shaft, 108, gear movable block,

[0054] 201, handle, 202, connecting shaft, 203, buckle hole,

[0055] 301, electromagnet frame, 302, electromagnetic coil, 303, iron core, 304, iron core spring, 305, first permanent magnet,

[0056] 401, control circuit board, 402, induction switch, 403, contact spring,

[0057] 501. reset tongue, 502. reset rod, 503. reset spring. DETAILED DESCRIPTION

[0058] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] To facilitate understanding of the content of the present invention, an electronic lock used in an industrial setting is used for description below. It can be understood that the control method of an electronic lock of the present invention and the electronic lock based on the control method are not limited to this type of industrial lock, but can also meet the needs in more occasions where electronic locks are used. This should not be regarded as a limitation of the present invention, but should belong to the protection scope of the present invention.

[0060] Example:

[0061] Figure 1 and Fig.10 FIG. 1 is a schematic diagram of a lock used in an industrial setting; Figure 1 The exploded structure diagram of the lock is shown in Figure 1. Figure 2 It is a schematic diagram of the overall structure of the lock when it is locked. Figure 3 It is a schematic diagram of the overall structure of the lock after the handle is opened; Figure 4 It is a schematic diagram of the internal structure of the lock when it is locked; Figures 5 to 10 Then Figure 4 A schematic diagram of the enlarged structure of the A part of the lock in various states; Fig.11 , Fig.12 Flowcharts of two control methods for the electronic lock.

[0062] It can be seen that the lock includes a lock body base, and a handle with one end fixedly connected to the gear shaft at the rear end of the lock body base through a connecting shaft, the handle can rotate based on the connecting shaft, and drive the gear movable block to move up and down through the gear shaft; the electromagnet, the reset tongue and the reset spring are installed in the lock body base through a fixed frame; the unlocking mechanism composed of the lock core and the push rod located at the rear end of the lock core and controlled to move up and down are installed in the lock core hole at the lower end of the lock body base, and the lock core is driven to rotate by the key inserted into the lock core to perform the unlocking action; a control circuit board with an induction switch is also installed in the lock body base, and the induction switch has a contact spring for sensing the movement of the push rod.

[0063] It can be understood that in this group of example figures, one end of the handle is fixedly connected to the lock body base through a connecting shaft and a gear shaft at the rear end of the lock body base, and can rotate relative to the lock body base based on the connecting shaft; the lock is connected to the gear movable block through the gear shaft, so that the handle is rotated to rotate the gear shaft, thereby driving the gear movable block to move up and down to open the cabinet door, which is also a common feature of this type of lock; in more applications, the handle can be completely independent of the lock body base, and even the handle can be simplified to a structural part that is directly installed on the door frame or cabinet door or directly formed on the door frame or door panel with only a buckle hole function, such as the handle and the lock body base are separately installed on the cabinet door and door frame, respectively, and the two are opened / closed by opening / closing the door and the door frame. This should be regarded as the protection scope of the present invention.

[0064] It can be understood that, as shown in this group of example figures, the lock core is rotated by the key, and the rear end of the lock core drives the push rod to move up and down through the gear; the lock core and key used can be a mechanical lock core, a mechanical key, or an electronic lock core, an electronic key; and in actual applications, a button or a knob can also be used to replace the lock core; a method of pressing / pulling a button or rotating a knob to drive the push rod to move up and down is adopted. It can be understood that in this example figure, the push rod moves up and down under the control of the gear at the rear end of the lock core; and in actual applications, the unlocking mechanism and the push rod controlled by it can also be realized by other methods, such as opening a keyhole under the base of the lock body, directly inserting the key into the keyhole, and inserting the key into the lower end of the buckle hole to realize the function of the push rod. This should be regarded as the protection scope of the present invention.

[0065] It can be understood that in this group of example figures, an electromagnet with a power-off self-holding function is used, which is composed of an electromagnetic coil, an electromagnet frame, a first permanent magnet located in the electromagnet frame, a telescopic body moving hole formed by the conductive hole of the electromagnetic coil, a telescopic body formed by the iron core located in the conductive hole, and a force-applying structure composed of an iron core spring located between the electromagnet frame and the iron core. For the sake of convenience, it is defined that when the electromagnetic coil of the electromagnet is energized in the forward direction, the electromagnetic coil generates a magnetic attraction force to attract the iron core to retract, and at the same time compresses the iron core spring, and after power is off, the first permanent magnet absorbs the iron core and keeps it in a retracted state; when the electromagnetic coil is energized in the reverse direction, the magnetism generated by the electromagnetic coil repels the first permanent magnet, and the iron core is unable to maintain the retracted state due to the compressed iron core spring and extends, and the iron core still maintains the extended state after power is off. There are other ways to construct an electromagnet with this kind of function, such as the first permanent magnet is located in the iron core, and the magnetic attraction force generated by the first permanent magnet and the electromagnet frame itself and the magnetic attraction or magnetic repulsion force generated by the electromagnetic coil in the energized state on the first permanent magnet are used to extend or retract the iron core and maintain this state. Alternatively, the iron core contains a force-applying structure composed of a second permanent magnet, and the second permanent magnet in the iron core and the first permanent magnet can also achieve this function. The differences in the self-structure and function of the electromagnet should be regarded as the protection scope of the present invention.

[0066] Likewise, it is understandable that the first permanent magnet may also be independently located in the lock body base, playing the same function of "maintaining the retracted state when the telescopic body is retracted" as the first permanent magnet located in the electromagnet; this should be regarded as the protection scope of the present invention.

[0067] It can be understood that the handle has a buckle hole for cooperating with the iron core and the push rod, and the buckle hole is an integral through hole; when the handle is closed in the lock body base, the telescopic body in the extended state is snapped into the upper end of the buckle hole, and the push rod is located at the lower end of the buckle hole without entering the buckle hole. Figure 4 , Figure 5 shown.

[0068] It can be understood that when the push rod is outside the buckle hole, the electromagnet is energized in the positive direction, which can make the iron core move upward and retract. At this time, the iron core is separated from the buckle hole, and the handle can be opened outward from the lock body base with the rotating shaft as the axis, thereby realizing the automatic opening of the electronic lock. The relevant structural diagram is shown in Figure 3 , Figure 6 In order to prevent the lock body from accidentally opening when it encounters unexpected vibrations, a necessary buckle structure is added to the position where the lower end of the iron core and the upper end of the buckle hole cooperate with each other, which can better solve the problem of accidental opening; and when the iron core needs to move upward, the buckle structure can be disengaged by lightly pressing the handle, so that the iron core can move upward smoothly. This should be regarded as the protection scope of the present invention.

[0069] It can be understood that in this set of example figures, when the key is used to unlock the lock through the lock core, the push rod is controlled by the lock core to move upward and enter the buckle hole from bottom to top. The upward movement of the push rod will trigger the contact spring to trigger the induction switch, and the push rod controls the handle and cannot be opened. Figure 7 As shown; as the push rod moves upward, when the upper end of the push rod contacts the iron core, the push rod that continues to move upward will push the iron core to move upward together, so that the iron core retracts relative to the electromagnetic coil, and the iron core spring is compressed, as shown in FIG. Figure 8 As shown, at this time, the push rod still triggers the contact spring; and when the push rod moves downward under the control of the lock core, it moves downward with the iron core and finally withdraws from the buckle hole. At this time, if the iron core still remains in the retracted state, the iron core and the push rod are both disengaged from the buckle hole, and the handle can be opened from the lock body base. The relevant structural diagram is shown in Figure 6 However, if the electromagnetic coil is reversely energized before the push rod moves downward and disengages from the buckle hole, the iron core cannot remain in the retracted state, so that the iron core is extended and enters the buckle hole under the action of the iron core spring. Figure 7 , Fig.10 Even if the push rod continues to move downward and disengages from the buckle hole, the handle still cannot be opened from the lock body base because the iron core is still in the buckle hole. See the relevant structural diagram for details. Figure 4 , Figure 5 .

[0070] It can be understood that in this solution, the snap hole can also be divided into an upper snap hole that cooperates with the iron core and a lower snap hole that cooperates with the push rod; the iron core is inserted into the upper snap hole when it extends downward, and the push rod is inserted into the lower snap hole when it moves upward. The upper snap hole and the lower snap hole can be connected or completely disconnected. After the push rod moves upward, the iron core is retracted through other mechanical structures that are located outside the lower snap hole. Depending on the structure of the snap hole and the iron core, the structure of the corresponding push rod and the iron core may also be different, but the core functions of "the push rod is controlled by the unlocking mechanism to move up and down" and "when the push rod is extended, it is located in the snap hole and moves upward, it can push the telescopic body to move upward" will not change. This should be regarded as the scope of protection of the present invention.

[0071] It can be understood that in this solution, when the electronic lock is locked, the lower end of the iron core in the extended state is stuck into the buckle hole to control the handle; in actual applications, the lower end of the iron core can also be connected to a block of a different mechanical structure, and the block can be buckled with the buckle hole on the handle or a buckle groove with a similar structure to control the handle, and the push rod can push the block to drive the iron core to retract. There are many mechanical structures of this type, and the fundamental functions between the handle and the push rod are unchanged. This should be regarded as the protection scope of the present invention.

[0072] It can be understood that in this group of schematic diagrams, in the process of preventing illegal unlocking by the key, it is only necessary to prevent the iron core from remaining in the retracted state and extending into the buckle hole when the push rod remains in the buckle hole. Figure 7 As shown in the figure, when the push rod moves upward and triggers the induction switch, the electromagnetic coil begins to be energized in the reverse direction and remains energized; at this time, the push rod continues to move upward, and the iron core is pushed upward and retracted, as shown in the figure. Figure 8 As shown; however, the iron core cannot maintain the retracted state, and as the push rod moves downward, the iron core will move downward together and continue to be stuck in the buckle hole, as shown Figure 7 As shown; the push rod continues to move downward, so that the induction switch is released from the trigger state, the electromagnetic coil is powered off, and the iron core is still in the buckle hole, as shown Fig.10 As shown; thus, the handle cannot be opened when the push rod exits the buckle hole. During the whole process, as long as the key drives the lock core to move the push rod and trigger the induction switch, the electromagnetic coil needs to be reversely energized and maintained, and this continues until the induction switch is de-triggered, that is, the push rod returns to its original state. The flow chart of the control method of the electronic lock is shown as follows Fig.11 shown.

[0073] It can be understood that in the above scheme, if it is necessary to further consider how to reduce the power consumption of the electronic lock when preventing illegal key unlocking, it is necessary to consider how to further reduce the power supply of the electromagnetic coil when preventing illegal key unlocking. A control method of an electronic lock further optimized under the above technical conditions, such as Fig.12 The flowchart of the control method is shown in FIG. 1 ; after the push rod moves upward and enters the buckle hole, the push rod continues to rise and triggers the induction switch. At this time, the electromagnetic coil is temporarily not energized. Figure 7 As shown; the push rod continues to move upward and pushes the iron core upward and makes the iron core exit the buckle hole, and the iron core retracts relative to the electromagnetic coil, as shown Figure 8 As shown in the figure; when the push rod starts to move downward under the control of the lock core, the electromagnetic coil remains de-energized, and the iron core remains in the retracted state, as shown in the figure. Fig. 9 As shown in the figure; when the push rod continues to move downward in the buckle hole and releases the trigger of the induction switch, the push rod is still in the buckle hole. At this time, the electromagnetic coil is reversely energized, so that the iron core in the retracted state extends downward and is stuck in the buckle hole, as shown in the figure. Fig.10 As shown, the electromagnetic coil can be de-energized thereafter; when the electromagnetic coil is energized and the iron core is stuck in the buckle hole, the push rod that continues to move downward is still located in the buckle hole; and when the push rod continues to move downward and exits the buckle hole, the iron core remains buckled in the buckle hole, thereby controlling the handle. The relevant structural schematic diagram is shown in Figure 4 , Figure 5 As shown. In this way, the above function can be realized only when the push rod moves downward to a certain position in the buckle hole and the electromagnetic coil is instantly energized, which greatly reduces the power consumption problem of the electronic lock when the key is inserted into the lock core to unlock the lock. In order to better realize the above function, it is necessary to lengthen the buckle hole so that the distance the push rod moves in the buckle hole is increased, so that the push rod moves downward and in the process of de-triggering the induction switch until the push rod completely exits the buckle hole, there is enough time for the control system of the electronic lock to react and energize the electromagnetic coil and the iron core to extend and snap into the buckle hole. This should be regarded as the protection scope of the present invention.

[0074] It can be understood that in this set of example figures, a reset tongue and a reset spring are also installed in the lock body base. When the handle is closed in the lock body base, the lower end of the reset tongue abuts against the outer wall of the buckle hole of the handle and puts the reset spring in a compressed state. Figure 4 As shown; when the iron core is retracted, the top rod at the upper end of the iron core extends out from the upper end of the conduction hole of the electromagnetic coil and is not affected by the reset rod at the upper end of the reset tongue. When the handle is opened from the base of the lock body, the reset tongue loses the support of the handle and moves downward under the action of the reset spring. The reset rod pushes the iron core downward, thereby causing the iron core to extend downward, as shown in FIG. Figure 3As shown; it can be understood that the reset tongue structure with this type of function can have various forms, such as the reset tongue directly abutting against the inner wall of the handle, and after the handle is separated from the lock body base, the reset spring pushes the reset tongue to move, so as to achieve the purpose of extending the iron core in the retracted state through the reset tongue. It can be understood that the purpose can also be achieved through different structures of the iron core combined with different structures of the reset tongue, such as when the reset tongue moves directly downward, it directly pushes the clamping ring located at the lower end of the iron core outside the electromagnetic coil, which can also achieve the purpose. For different processing methods, the structure of the reset tongue and the reset spring itself can be changed, but its core function is still "when the telescopic body is in a high position and the handle is separated from the lock body base, the reset spring pushes the reset tongue to make the telescopic body move downward". This should be regarded as the scope of protection of the present invention.

[0075] It can be understood that in this solution, the induction switch is a touch switch with a spring, and the switch is triggered by triggering the spring, so that the electrical signal output by the switch changes; and in actual applications, the induction switch can also be an electromagnetic induction switch, or a contact switch, or a light-sensitive induction switch, or a micro switch; and it can also be composed of multiple induction switches, or even multiple induction switches of different types to form an induction switch group, which is convenient for more accurate sensing of the position of the push rod and the state of the push rod moving up or down; and the induction switch senses the unlocking operation of the unlocking mechanism, which can be the induction switch being triggered to send an electrical signal to the electronic lock control system, or the induction switch recovering from the triggered state to the untriggered state so that the electronic lock control system loses the electrical signal. This should be regarded as the protection scope of the present invention.

[0076] It can be understood that in this solution, one induction switch is used to sense the movement of the push rod, but in practice, one or more induction switches can also be used to sense the unlocking operation using the unlocking mechanism, and the one or more induction switches sense the rising / falling movement of the push rod, or sense the upward / downward movement of the telescopic body, or sense the upward / downward movement of the reset tongue under the action of the unlocking mechanism or the push rod, or sense the action occurring when the unlocking key is inserted, the lock cylinder or knob on the handle is rotated, or the button is pressed; or the one or more induction switches are used to sense the unlocking operation using the unlocking mechanism, which means that after one or more induction switches are triggered by the rising movement of the push rod or the upward movement of the reset tongue, one or more of the induction switches are restored from being triggered to a non-triggered state when the push rod or the reset tongue moves downward; or it means that after one or more induction switches are de-triggered by the rising movement of the push rod or the upward movement of the reset tongue, one or more of the induction switches are triggered when the push rod or the reset tongue moves downward. All of these should be regarded as the protection scope of the present invention.

[0077] It can be understood that in this group of example figures, the induction switch is installed on the circuit board, and the circuit board is installed in the base of the lock body; when the induction switch is triggered / untriggered by the unlocking mechanism to perform the unlocking action, the control circuit board will be able to obtain the relevant electrical signal, so that the control circuit board can determine whether the action of the unlocking mechanism is an illegal unlocking action. If it is determined to be an illegal unlocking action, the electromagnetic coil is reversely energized or remains reversely energized. If it is determined to be a legal unlocking action (network interruption, or equipment failure, or obtaining legal unlocking authorization, etc.), the electromagnetic coil is forwardly energized or de-energized. If the circuit board itself has an electrical failure (including a failure of the induction switch), the electromagnetic coil will not be reversely energized or remain reversely energized, and the unlocking mechanism can still be used to unlock. In actual applications, the induction switch can also be installed separately in the base of the lock body as needed, and then electrically connected to the circuit board, and the circuit board can also be installed outside the base of the lock body as needed. In this regard, the specific installation position of the induction switch and the installation position of the circuit board should be regarded as the protection scope of the present invention.

[0078] It can be understood that in this embodiment, in order to further enhance the mechanical strength of the electronic lock when locked, a clamping block can be added to the end of the iron core, so that the clamping block replaces the iron core to clamp the clamping hole, and when the push rod moves upward, the clamping block is pushed to drive the iron core to move upward together, thereby also realizing the above technical solution. This should be regarded as the protection scope of the present invention.

[0079] The present invention discloses a control method for an electronic lock and an electronic lock based on the control method, which have a simple structure. The snap hole on the handle is controlled jointly by the telescopic body of the electromagnet located on the lock body base and the push rod controlled by the unlocking mechanism, and the telescopic body of the electromagnet is made to have the characteristic of power-off self-holding function by using the first permanent magnet, thereby solving the automatic unlocking function required by the electronic lock and solving the hidden danger of illegal unlocking through the mechanical structure. At the same time, the power consumption of the electronic lock when preventing illegal unlocking can be greatly reduced, which can meet the market's technical requirements for electronic locks and has a high promotion value.

[0080] However, the above description is only a preferred embodiment of the present invention and does not limit the protection scope of the present invention. Therefore, all equivalent structural changes made using the contents of the present invention description and drawings are included in the protection scope of the present invention.

Claims

1. A method for controlling an electronic lock, the electronic lock comprising a lock body, a lock opening tool, an electromagnet located in the lock body, and a first permanent magnet also located in the lock body; characterized in that: The electromagnet includes an electromagnetic coil, a telescopic body and a force-applying structure. When the electromagnetic coil is energized in the forward direction, it can drive the telescopic body or drive the force-applying structure to drive the telescopic body to retract; when the electromagnetic coil is energized in the reverse direction, it can drive or can drive the telescopic body together with the force-applying structure to extend; In the initial state, the electromagnet is in a power-off state or a reverse power-on state, the telescopic body of the electromagnet is extended and held, and the telescopic body clamps the lock body, or the clamping block connected to the telescopic body of the electromagnet is extended and clamps the lock body, so that the lock body cannot be opened, and the electronic lock is in a locked state; If the electronic lock receives an unlocking command and needs to automatically open the electronic lock, the electromagnet is powered in the positive direction to retract the telescopic body; the telescopic body / block in the retracted state releases the lock body buckle state, so that the lock body is opened and the electronic lock is automatically opened; If the unlocking action is performed by the unlocking tool, the unlocking tool first buckles the lock body so that the lock body cannot be opened; when the unlocking action is continued, the unlocking tool pushes the telescopic body / block to retract, and the telescopic body / block releases the buckling state of the lock body; during this process, the unlocking tool remains in the buckling state of the lock body, and the lock body still cannot be opened; the following step A, or step B, or step C is performed; Step A: At this time, if the electronic lock has an electronic fault or has received an unlocking instruction, or the electronic lock has received a release instruction to release the anti-unlocking tool, so that the electromagnet is in a power-off state or remains in a power-off state, the first permanent magnet adsorbs the telescopic body / block in a retracted state; when the unlocking tool further performs an unlocking action or a reverse unlocking action, the buckled state of the lock body is gradually released, and the telescopic body remains in a retracted state; when the unlocking tool completely releases the buckled state of the lock body, the lock body is opened, and the electronic lock is unlocked by the unlocking tool; Step B: If the electronic lock senses that the unlocking action by the unlocking tool is illegal, the electromagnet is reversely powered, so that the first permanent magnet cannot absorb the telescopic body / block in the retracted state; when the unlocking tool further performs the unlocking action, or performs the reverse unlocking action, and gradually releases the buckling state of the lock body, the telescopic body extends and clamps the lock body due to the action of the electromagnet, or the telescopic body extends and clamps the lock body due to the action of the electromagnet; then execute step D; Step C: If the electronic lock senses that the unlocking action performed by the unlocking tool is illegal; when the unlocking tool further performs the unlocking action, or performs the reverse unlocking action, the locking state of the lock body is gradually released, and the unlocking tool is now out of contact with the telescopic body / block; before the unlocking tool has completely released the locking state of the lock body, the electromagnet is reversely powered, so that the first permanent magnet cannot absorb the telescopic body / block in the retracted state, and the telescopic body extends out and clamps the lock body due to the action of the electromagnet, or the telescopic body extends out due to the action of the electromagnet and is clamped by the block connected to the telescopic body; then execute step D; Step D: When the unlocking tool completely releases the lock body, the lock body is still locked by the telescopic body, and the lock body cannot be opened. The electronic lock is illegally unlocked by the anti-unlocking tool.

2. The electronic lock control method according to claim 1, characterized in that: The unlocking tool includes a key, a lock cylinder, a knob, a button, or a combination of a corresponding mechanical structure and a key / lock cylinder / knob / button; The said if the unlocking action is performed by the unlocking tool, the unlocking tool first locks the lock body so that the lock body cannot be opened, refers to that when the unlocking action is performed by the key, or the lock cylinder, or the knob, or the button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button, the movement of the key, or the lock cylinder, or the knob, or the button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button first locks the lock body so that the lock body cannot be opened; When the unlocking action is continued, the unlocking tool pushes the telescopic body / block to retract, which means that when the unlocking action is continued, the telescopic body / block is retracted by the movement of the key, the lock cylinder, the knob, the button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button; The step of gradually releasing the latching state of the lock body when the unlocking tool further performs the unlocking action or the reverse unlocking action refers to the step of gradually releasing the latching state of the lock body by the movement of the key, lock cylinder, knob, button, or the combination of the corresponding mechanical structure and the key / lock cylinder / knob / button when the unlocking action is further performed or the reverse unlocking action is performed.

3. The electronic lock control method according to claim 2, characterized in that: The force-applying structure is a telescopic body spring or a second permanent magnet; the telescopic body connected force-applying structure is a telescopic body connected to a telescopic body spring, and when the telescopic body is in a retracted state, the telescopic body spring applies a downward force to the telescopic body, and at this time the telescopic body is composed of a material that can be attracted by magnetic force; or the telescopic body connected force-applying structure is a second permanent magnet installed on the telescopic body, and when the telescopic body is in an extended state, the second permanent magnet repels the magnetism of the first permanent magnet, thereby keeping the telescopic body in an extended state, and when the telescopic body moves upward to a retracted state, the second permanent magnet generates a magnetic attraction force with the first permanent magnet as it moves relative to the first permanent magnet, thereby keeping the telescopic body in a retracted state.

4. An electronic lock based on the electronic lock control method according to claim 3, characterized in that: The electronic lock comprises a lock body composed of a lock body base and a handle, an unlocking tool, an electromagnet installed in the lock body base and a first permanent magnet, and the unlocking tool comprises an unlocking mechanism composed of a key, a lock core, a knob, or a button and a corresponding mechanical structure composed of a push rod; The electromagnet includes an electromagnetic coil, a telescopic body and a force-applying structure, wherein the telescopic body is placed in a telescopic body moving hole of the electromagnetic coil; The handle is provided with a buckle hole, which is an integral through hole, or is divided into an upper buckle hole cooperating with the telescopic body and a lower buckle hole cooperating with the push rod; When the electronic lock is closed at the lock body base, when the unlocking tool is used to unlock the lock, the movement of the unlocking mechanism drives the push rod to move up / down, and the push rod locks the handle, making the handle unable to be opened; The electromagnet, the unlocking mechanism and the push rod moved under the control of the unlocking mechanism are installed in the lock body base. The push rod is controlled by the unlocking mechanism to move in the telescopic direction of the telescopic body; when the push rod moves relatively close to the telescopic direction of the telescopic body, it pushes the telescopic body in the extended state to the retracted state; When the telescopic body in the extended state or the push rod in the extended state is located in the buckle hole at the corresponding position on the handle, the handle is in the closed state; when the telescopic body and the push rod in the retracted state are completely detached from the buckle hole, the handle is in the open state; The first permanent magnet is installed in the lock body base or the electromagnet, and is used to maintain the retracted state when the telescopic body is retracted; The force applying structure applies force to the telescopic body, and can maintain the telescopic body in an extended state when the telescopic body is extended.

5. The electronic lock according to claim 4, characterized in that: The lower end of the telescopic body is connected with a clamping block; When the telescopic body in the extended state is located in the buckle hole at the corresponding position on the handle, the handle is in the closed state, which means that when the telescopic body in the extended state drives the clamping block to extend and is clamped in the buckle hole through the clamping block, the handle is in the closed state; When the telescopic body and the push rod are completely disengaged from the buckle hole when they are retracted, the handle is in the open state; it means that when the telescopic body is retracted and the block is retracted, the push rod is also disengaged from the buckle hole at the same time, the handle is in the open state.

6. The electronic lock according to claim 4, characterized in that: The electronic lock also includes a reset tongue and a reset spring installed on the lock body base; when the handle is closed in the lock body base, the lower end of the reset tongue abuts against the inner wall of the handle or the outer wall of the buckle hole, and the reset spring located between the reset tongue and the lock body base is compressed or stretched; the reset tongue cooperates with the telescopic body, and when the telescopic body is retracted and the handle is separated from the lock body base, the reset spring pushes the reset tongue to make the telescopic body move downward.

7. The electronic lock according to claim 6, characterized in that: The reset tongue cooperates with the telescopic body. When the telescopic body is in a high position and the handle is separated from the lock body base, the reset spring pushes the reset tongue to make the telescopic body move downward; it means that the moving hole of the telescopic body is a through hole, and a push rod is connected to the upper end of the telescopic body. When the telescopic body is retracted, its push rod passes through the upper end of the moving hole of the telescopic body. When the handle is closed in the lock body base, the reset tongue does not affect the movement of the telescopic body; when the handle is separated from the lock body base, the reset tongue moves downward under the push of the reset spring, and pushes the push rod of the telescopic body in the retracted state to make the telescopic body move downward together, and the telescopic body extends; Alternatively, when the handle is closed in the lock body base, the portion of the telescopic body located outside the telescopic body moving hole of the electromagnetic coil is not affected by the reset tongue when the telescopic body is retracted; when the handle is separated from the lock body base, the reset tongue moves downward under the push of the reset spring, and pushes the portion of the telescopic body located outside the telescopic body moving hole to move downward together, and the telescopic body extends.

8. The electronic lock according to any one of claims 4 or 6, characterized in that: The electronic lock further comprises at least one induction switch installed in the lock body base for sensing the unlocking operation using the unlocking tool, wherein the induction switch is a touch switch, or an electromagnetic induction switch, or a contact switch, or a light-sensitive induction switch, or a micro switch, or a combination of the above switches; The at least one induction switch is used to sense the unlocking operation performed by the unlocking tool, which means that the one or more induction switches sense the rising / falling movement of the push rod, or sense the upward / downward movement of the telescopic body, or sense the upward / downward movement of the reset tongue under the action of the unlocking tool or the push rod, or sense the action occurring when the unlocking key is inserted, the lock cylinder or knob on the handle is rotated, or the button is pressed; Alternatively, the at least one induction switch is used to sense the unlocking operation performed by the unlocking tool, which means that after one or more induction switches are triggered by the upward movement of the push rod or the upward movement of the reset tongue, one or more of the induction switches are restored from the triggered state to the untriggered state when the push rod or the reset tongue moves downward; or it means that after one or more induction switches are de-triggered by the upward movement of the push rod or the upward movement of the reset tongue, one or more of the induction switches are triggered when the push rod or the reset tongue moves downward.

9. The electronic lock according to claim 8, characterized in that: The electronic lock also includes a control circuit board; the control circuit board is connected to the electromagnetic coil and is responsible for supplying power to the electromagnetic coil in a forward or reverse direction; the control circuit board is connected to the induction switch and is responsible for receiving the induction signal of the induction switch; when the unlocking tool performs an unlocking action and triggers / untriggers the induction switch, the control circuit board determines whether the action of the unlocking tool is an illegal unlocking action. If it is determined to be an illegal unlocking action, the electromagnetic coil is reversely energized or maintained in reverse; if it is determined to be a legal unlocking action, the electromagnetic coil is forwardly energized or de-energized.

10. The electronic lock according to claim 4, characterized in that: One end of the handle is movably connected to the lock body base, and the buckle hole is located at the other end of the handle. The handle can be opened with the connection with the lock body base as the axis; or the handle is completely separated from the lock body base.

Images