An electronic lock with an anti-collision structure

Abstract

The present invention discloses an electronic lock with an anti-collision structure, which is installed on the back side of a door panel of a box body, and includes a bottom plate, a lock structure installed on the bottom plate, and a lock bolt matched with a lock hole of the box body, wherein the lock structure includes a lock core and an electronic opening part, and is characterized in that: a slideway groove is provided in the lock structure, a slide plate at the rear end of the lock bolt slides with the slideway groove, the lock core is located in the slideway groove, and an opening position is provided on the lock core; the electronic opening part includes a motor and a power supply, the motor drives the lock core to rotate, when the opening position corresponds to the slideway groove, the lock structure is in an opening state, otherwise the top of the slide plate abuts against the lock core, and the lock structure is in a closing state. The present invention realizes the opening and closing switching of the lock by driving the lock core to rotate by a motor, avoids the accidental unlocking due to external force, and effectively improves the anti-vibration, knocking, and impact capabilities of the lock.

Description

Technical Field

[0001] The invention relates to an electronic lock structure, in particular to an electronic lock with an anti-collision structure, which is mainly used for security products such as safes and safe deposit boxes. Background Art

[0002] At present, most electronic safes use electromagnets (also known as solenoid valves, electromagnetic coils, solenoids, etc.) as a driving method. The working principle is that when the door opening signal output by the password or other methods (such as fingerprint locks, magnetic card locks, induction locks, etc.) is input correctly, the electromagnet is attracted and the iron core retracts. This is the so-called door opening state. The mechanical mechanism coordinated with the electromagnet can open the door through a knob or a cross lock or a blade lock; on the contrary, if the opening signal is input incorrectly, the electromagnet is not energized, the iron core does not retract, the lock tongue blocks the path of the mechanical mechanism to open and rotate, and the door cannot be opened.

[0003] However, since the lock tongue in the electromagnet provides telescopic force through the spring, there is a risk of accidental retraction. For example, if the safe encounters a major impact or falls, the spring will operate abnormally under the action of external force, and the safety factor will be affected. For this reason, various anti-collision mechanisms have emerged to prevent the electromagnet from opening by mistake. For example, the Chinese invention patent "A gear-driven electronic safe lock device" (201310260653.9) changes the vertical electromagnetic lock body to a horizontal horizontal placement to avoid the external force acting on the upper part of the safe to drive the iron core to overcome the gravity and produce a retraction action. This change can be achieved by adding a gear transmission component to convert the force direction; another example is the Chinese invention patent "A tilted electronic safe lock device" (201310260654.3), which adopts a non-vertical tilt placement of the electromagnetic lock body and changes the structure of the lock storage box to prevent misoperation.

[0004] It can be seen from the above-mentioned prior art that the current research and development direction is generally to change the placement direction of the electromagnetic lock body so that it will not retract when subjected to external force. To this end, we need to add auxiliary structures or change the lock box structure, which affects the setting of other parts of the lock itself. The structure is relatively complex, which increases the difficulty of assembly. The change in force direction will also affect the stability of its own operation. Therefore, we need to study a lock structure with a simpler structure, more stable operation and lower cost to make up for the shortcomings of the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide an electronic lock with an anti-collision structure. By adopting a new structure, the lock components are simplified, the power consumption is low, the cost investment is reduced, and the quality is easy to control.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electronic lock with an anti-collision structure, installed on the back side of the door panel of a box body, including a base plate, a lock structure installed on the base plate and a lock bolt matched with the lock hole of the box body, the lock structure including a lock core and an electronic opening part, a slide groove is provided in the lock structure, a slide plate at the rear end of the lock bolt slides with the slide groove, the lock core is located in the slide groove, and an opening position is provided on the lock core; the electronic opening part includes a motor and a power supply, the motor drives the lock core to rotate, when the opening position corresponds to the slide groove, the lock structure is in an open state, the slide plate retracts along the slide groove, otherwise the top end of the slide plate is against the lock core, the lock structure is in a closed state, and the closed state is the initial state of the lock core.

[0007] In the above, the electronic lock is generally used in security products such as safes. By entering a suitable password, the electronic lock is opened, and vice versa. In order to improve the stability of the electronic lock, an anti-collision structure is set in the lock, such as the previous electromagnet structure. In the present invention, the reciprocating motion of the anti-collision structure is changed to a rotational motion. Only after the lock core is rotated to the open position, it matches the slideway groove, and the slide on the lock bolt can retract along the slideway groove and the door can be opened. On the contrary, if the input opening password is wrong, the motor is not powered, and the lock core does not rotate, then the lock core blocks the smooth flow of the slideway groove, and the slide cannot pass through, so the door cannot be opened naturally. This change makes up for the instability caused by the reciprocating motion and avoids the risk of malfunction and abnormal opening of the lock due to external forces.

[0008] In the above technical solution, the lock core is a rotating shaft arranged perpendicular to the door, the output end of the motor is connected to the rotating shaft, a torsion spring is sleeved on the upper part of the rotating shaft, and the open position is set in the middle of the rotating shaft; when the motor loses power, the lock core is restored to the initial state from the open state by the torsion force of the torsion spring. The installation method of the torsion spring adopts the existing conventional set method, one end is fixed on the fixed component, and the other end is on the moving component. When the moving component is displaced by external force, the torsion spring is stretched, and when the external force is removed, the moving component returns to the initial position under the reset force of the torsion spring. Here, the torsion spring rotates the rotating shaft back to the initial position after the motor removes the rotational force.

[0009] In the above technical solution, the open position is a notch or groove opened on the lock core, and the notch or groove cooperates with the slide groove. When the lock core rotates, the notch or groove merges with the slide groove, and the slide plate passes through the slide groove, driving the lock bolt to retract, which is the open state; otherwise, the front end of the slide plate is against the lock core, and the lock bolt cannot retract, which is the closed state.

[0010] In the above technical solution, the lock structure includes a base, a lock core, a control chip and a password input terminal. The base is fixed to the bottom plate by screws, and a through-type notch is provided corresponding to the slide plate to form the slideway groove; the lock core is a round shaft, which is arranged vertically from the motor downward in the shaft hole opened on the base, and the tail end falls into the slideway groove; the control chip pre-stores the opening password, and its receiving end is connected to the password input terminal. The password input terminal is installed on the front side of the door panel of the box body, and the input information is collected and transmitted to the control chip for comparison. When the input information matches the pre-stored opening password, the power supply is connected to the motor, and the lock core rotates to the open state. When the input information does not match the pre-stored opening password, the motor is not powered on, and the lock core is in the initial state. The above control chip can also be set to time, and the motor power-on time is set to a rated value. After each opening state is maintained for a rated time, it is automatically disconnected and the lock core returns to the initial state.

[0011] In addition to the round shaft, you can also try to use a mechanism such as an eccentric wheel, using the large and small diameter deviations of the eccentric wheel as the two different states of the lock core: closed and open.

[0012] A further technical solution is that a lock core limiting structure is provided in the axial hole of the base, the lock core limiting structure is located above the slideway groove and is composed of a groove that engages with the edge of the lock core in a closed state.

[0013] Another technical solution is that the unlocking password is one or more of character type, graphic type, and sound type.

[0014] In the above technical solution, the front end of the slide plate corresponds to the lock core side and is provided with a chamfer, which cooperates with the outer edge surface of the lock core.

[0015] In the above technical solution, the lock structure also includes a mechanical opening part, which includes a lever, one end of which is sleeved on the lower part of the lock core, and the other end is provided with a guide column arranged perpendicular to the base plate, and the end of the guide column is slidably connected to the arc-shaped slide on the base plate, pushing the guide column to move in the arc-shaped slide, thereby driving the lock core to rotate.

[0016] A further technical solution is that the arc-shaped slideway is a fan-shaped hole, the guide column is perpendicular to the bottom plate and falls into the fan-shaped hole, and its movement arc is adapted to the displacement distance of the lock core from the closed state to the open state. The guide column serves as the driving end of the mechanical opening part (manual opening), slides along the fan-shaped hole, and causes the lock core at the other end of the lever to rotate together until it reaches the open position. The mechanical opening part is an emergency opening method. When an abnormality occurs in the electronic opening method, the door can be opened to improve the convenience of use. The guide column here can be connected to the external manual opening input end (usually a key).

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0018] 1. The electronic opening part of the present invention realizes the opening and closing of the lock core through the rotation of the motor, and adopts the rotation motion instead of the reciprocating motion of the previous electromagnet, so as to avoid the accidental opening operation due to the vibration inertia, effectively improve and improve the use safety of security products such as safes, and prevent abnormal opening;

[0019] 2. An open position is set in the middle of the lock core, through which the slide plate for the lock bolt to retract passes. Only when the motor is powered on and rotates, the open position will correspond to the slide groove. When the motor loses power, the lock core will reverse under the action of the torsion spring and return to the initial position. Due to the rotation of the open position, the outer edge of the lock core blocks the passage of the slide plate, and the front end of the slide plate is against the lock core, and the lock bolt cannot retract. Compared with the previous anti-collision structure (changing the arrangement direction of the electromagnet), the structure is simpler, and the rotation movement mode is a stable value after the rotation angle is determined, and the rotation angle is easy to set (just set the rotation angle of the motor output end), which is convenient to control and easy to implement;

[0020] 3. The present invention adopts electric motor (micro motor) drive, which is more stable, has low power consumption, simple structure, low cost and easy quality control compared with the previous electromagnet drive mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a schematic structural diagram of a lock core in a closed state (initial state) in Embodiment 1 of the present invention;

[0022] Figure 2 yes Figure 1 A right side schematic diagram of

[0023] Figure 3 yes Figure 2 AA section view;

[0024] Figure 4 This is a structural schematic diagram of the lock core in the open state in the first embodiment of the present invention;

[0025] Figure 5 is a schematic diagram of the lock structure in the first embodiment of the present invention;

[0026] Figure 6 yes Figure 5 A cross-sectional schematic diagram of

[0027] Figure 7 This is a structural schematic diagram of the first embodiment of the present invention when the lever is in a closed state;

[0028] Figure 8 This is a structural schematic diagram of the first embodiment of the present invention when the lever is in an open state;

[0029] Fig. 9 is a schematic structural diagram of the lock core limiting structure in the closed state in the second embodiment of the present invention;

[0030] Fig.10 It is a structural schematic diagram of the lock core limiting structure in the closed state in the second embodiment of the present invention.

[0031] Among them: 1. Motor; 2. Lock structure; 3. Torsion spring; 4. Lock core; 5. Lever; 6. Door panel; 7. Bottom plate; 8. Lock bolt; 9. Open position; 10. Slide groove; 11. Slide plate; 12. Guide column; 13. Fan-shaped hole; 14. Base; 15. Chamfer; 16. Axis hole; 17. Groove. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0033] Example 1: See Figures 1 to 8 As shown, an electronic lock with an anti-collision structure is installed on the back side of a box door panel 6, including a bottom plate 7, a lock structure 2 installed on the bottom plate 7, and a lock bolt 8 matched with the lock hole of the box, the lock structure 2 includes a lock core 4, an electronic opening part and a mechanical opening part, a slide groove 10 is provided in the lock structure 2, a slide plate 11 at the rear end of the lock bolt 8 is slidably matched with the slide groove 10, the lock core 4 is located in the slide groove 10, and an opening position 9 is provided on the lock core 4;

[0034] The electronic opening part includes a motor 1 and a power supply. The motor 1 drives the lock core 4 to rotate. When the opening position 9 corresponds to the slide groove 10, the lock structure 2 is in an open state, and the slide plate 11 retracts along the slide groove 10. Otherwise, the top of the slide plate 11 rests on the lock core 4, and the lock structure 2 is in a closed state. The closed state is the initial state of the lock core 4.

[0035] The mechanical opening part includes a lever 5, one end of which is sleeved on the lower part of the lock core 4, and the other end is provided with a guide column 12 arranged perpendicular to the base plate 7. The end of the guide column 12 is slidably connected to the arc-shaped slide on the base plate 7, pushing the guide column 12 to move in the arc-shaped slide, thereby driving the lock core 4 to rotate.

[0036] like Figure 3 , 4 As shown, the arc slide is a fan-shaped hole 13, the guide column 12 is perpendicular to the bottom plate 7, and falls into the fan-shaped hole 13, and its movement arc is adapted to the displacement distance of the lock core 4 from the closed state to the open state.

[0037] In this embodiment, the lock structure 2 includes a base 14, a lock core 4, a control chip and a password input terminal. The base 14 is fixed to the bottom plate 7 by screws, and a through-type notch is provided at a position corresponding to the slide plate 11 to form the slideway groove 10. Figure 5 , 6 As shown; the lock core 4 is a round shaft, which is arranged vertically from the motor 1 downward in the shaft hole 16 opened on the base 14, and its upper part is fixed to the output end of the motor 1, and a torsion spring 3 is sleeved on the outer edge surface, the middle part is the opening position 9, and the tail end falls into the slide groove 10; the control chip has a pre-stored opening password, and its receiving end is connected to the password input end, and the password input end is installed on the front side of the box door panel 6, and the input information is collected and transmitted to the control chip for comparison. When the input information matches the pre-stored opening password, the power supply is turned on to the motor 1, and the lock core 4 rotates to the open state. When the input information does not match the pre-stored opening password, the motor 1 is not powered on and the lock core 4 is in the initial state.

[0038] The unlocking password is one or more of the character type, graphic type, and sound type, such as the most common digital password, or it can be a graphic type of fingerprint, face recognition, etc., and the sound type can be a string of randomly generated characters and input by the unlocking person. The unlocking password is not limited to the several or several combinations mentioned above.

[0039] The lock core 4 is automatically reset by utilizing the elastic force of the torsion spring 3. A delay timer is set in the control chip. When the timer reaches the rated time, the power supply stops supplying power to the motor 1. The lock core 4 rotates in the opposite direction under the rebound force of the torsion spring 3 and returns to the initial state. Figure 3 , 4 As shown, part of the slideway groove 10 is blocked again, so that the slide plate 11 cannot pass through, which also limits the retraction of the lock bolt 8. The timing function here is built-in to the chip, and no additional equipment is required. The power supply can be a dry cell or a rechargeable battery. Since the motor 1 only needs to run for a period of time when it is turned on, and stops running immediately after the rated time, it no longer consumes electricity, so the energy consumption is low, and the dry cell is sufficient to meet the demand, thereby simplifying the lock structure 2 and reducing the use and maintenance costs.

[0040] like Figure 3 , 4As shown, the opening position 9 is a notch or groove formed on the lock core 4, and the notch or groove cooperates with the slideway groove 10. When the lock core rotates, the notch or groove merges with the slideway groove 10, and the slide plate 11 passes through the slideway groove 10, driving the lock bolt 8 to retract, which is the opening state; otherwise, the front end of the slide plate 11 abuts against the lock core 4, and the lock bolt 8 cannot retract, which is the closing state. In this embodiment, the opening position 9 is set by cutting a semicircle on the circular shaft. When the cut is flush with the slideway groove 10, the slide plate 11 can pass normally, and when the cut rotates, the arc surface of the circular shaft turns into the slideway groove 10, forming a "traffic restriction" on the slideway groove 10, and the slide plate 11 cannot pass. The structure is simple and ingenious, and the mechanical processing of the semicircular cut is simple and easy to implement.

[0041] In addition to the above-mentioned semicircular cutout method to achieve the setting of the opening position 9, the U-shaped groove method can also be tried. A groove is made on the lock core 4 at a position corresponding to the slide groove 10, so that after the lock core 4 is rotated to the right position, the slide plate 11 can pass through the U-shaped groove. An eccentric wheel can also be used, and the lock core is used as a central rotation axis in the eccentric wheel. When the eccentric wheel rotates, the other end will give way to the slide groove 10, and after resetting, it will be blocked again. Such methods can all be regarded as a way to achieve the opening position 9, and are not limited to the cutout method in this embodiment.

[0042] like Figure 7 , 8 As shown, the front end of the slide plate 11 corresponds to the side of the lock core 4 and is provided with a chamfer 15. The chamfer 15 cooperates with the outer edge surface of the lock core 4 to reduce the impact damage of the front end of the slide plate 11 on the surface of the lock core 4, and also facilitates the slide plate 11 to slide into the slide groove 10, forming a guiding effect.

[0043] In this embodiment, the lock structure 2 has two opening modes: one is power-on unlocking, and the other is mechanical unlocking.

[0044] The normal opening mode is as follows: the motor 1 is powered on, so that the motor 1 rotates and drives the lock cylinder 4, overcoming the torque of the torsion spring 3, and the lock cylinder 4 stops at Figure 8 ( Figure 4 ), the slide plate 11 connected to the safe lock bolt 8 can slide through the slideway groove 10 inside the lock body, and the electronic lock is in the unlocked state. When the motor is powered off, the torsion force of the torsion spring 3 restores the lock cylinder 4 to its initial state, and the lock cylinder 4 stops at Figure 7 ( Figure 3 ) position, the semicircle blocks the sliding of the slide plate 11, and the lock is in a closed state.

[0045] The normal mechanical opening method is: the lever 5 is connected to the lock core 4, and the lever 5 can drive the lock core 4 to rotate, overcoming the torsion of the torsion spring 3, and the lock core 4 stops. Figure 8 ( Figure 4), the slide plate 11 connected to the safe lock bolt 8 can slide through the slideway groove 10 inside the lock body, and the lock is in the unlocked state. When the lever 5 is released, the torsion force of the torsion spring 3 restores the lock cylinder 4 to its initial state, and the lock cylinder 4 stops at Figure 7 ( Figure 3 ) position, the semicircle blocks the sliding of the slide plate 11, and the lock is in a closed state.

[0046] Example 2: See Figure 9-10 As shown, an electronic lock with an anti-collision structure, in this embodiment, its structure is basically similar to that of the first embodiment, the difference is that a lock core limiting structure is provided in the axial hole 16 of the base 14, and the lock core limiting structure is located above the slide groove 10, and is composed of a groove 17 (or a step) that engages with the edge of the lock core in the closed state.

[0047] From the attached Fig. 9 It can be seen that when the lock core 4 is in the closed state, the lock core 4 with the opening position 9 notch is just stuck in the groove 17, locking its initial position; and when it is turned into the open state, as shown in FIG. Fig.10 As shown, the lock core 4 rotates clockwise, and the notch at the opening position 9 exits the limit groove 17. Its purpose is to limit the initial position of the lock core, stabilize its state, and improve safety performance.

[0048] The lock of the present invention is opened and closed by the rotation of the shaft (lock cylinder 4), which improves the existing electromagnetic valve (electromagnet) that is opened and closed by reciprocating motion and is affected by vibration inertia. Since the opening and closing of the electromagnetic valve is a linear motion, the motion trajectory formed by gravity, knocking, vibration, etc. is the same, which may cause the risk of accidental opening. The opening trajectory of the present invention is rotation, which effectively reduces the risk of unlocking the safe (safe deposit box) in an abnormal state (vibration, knocking, impact).

Claims

1. An electronic lock with an anti-collision structure, installed on the back side of a door panel of a box, comprising a bottom plate, a lock structure installed on the bottom plate, and a lock bolt matched with a lock hole of the box, wherein the lock structure comprises a lock core and an electronic opening part, and is characterized in that: The lock structure is provided with a slideway groove, the slide plate at the rear end of the lock bolt is slidably matched with the slideway groove, the lock core is located in the slideway groove, and the lock core is provided with an open position; the electronic opening part includes a motor and a power supply, the motor drives the lock core to rotate, when the open position corresponds to the slideway groove, the lock structure is in an open state, the slide plate retracts along the slideway groove, otherwise the top end of the slide plate abuts against the lock core, the lock structure is in a closed state, and the closed state is the initial state of the lock core; The lock core is a rotating shaft arranged perpendicular to the door, the output end of the motor is connected to the rotating shaft, a torsion spring is sleeved on the upper part of the rotating shaft, and the open position is set in the middle of the rotating shaft; when the motor loses power, the lock core is restored from the open state to the initial state by the torsion force of the torsion spring; The open position is a notch or groove formed on the lock core, which cooperates with the slideway groove. When the lock core rotates, the notch or groove merges with the slideway groove, and the slide passes through the slideway groove, driving the lock bolt to retract, which is the open state; otherwise, the front end of the slide is against the lock core, and the lock bolt cannot retract, which is the closed state. The lock structure includes a base, a lock core, a control chip and a password input terminal. The base is fixed to the bottom plate by screws, and a through-type notch is provided at a position corresponding to the slide plate to form the slide groove; the lock core is a round shaft, which is vertically arranged in an axial hole opened on the base from the motor downward, and the tail end falls into the slide groove; the control chip has a pre-stored opening password, and its receiving end is connected to the password input terminal. The password input terminal is installed on the front side of the door panel of the box body, and the input information is collected and transmitted to the control chip for comparison. When the input information matches the pre-stored opening password, the power supply is turned on to the motor, and the lock core rotates to the open state. When the input information does not match the pre-stored opening password, the motor is not powered on and the lock core is in the initial state.

2. The electronic lock with an anti-collision structure according to claim 1, characterized in that: A lock core limiting structure is arranged in the shaft hole of the base. The lock core limiting structure is located above the slideway groove and is composed of a groove that engages with the edge of the lock core in a closed state.

3. The electronic lock with an anti-collision structure according to claim 1, characterized in that: The unlocking password is one or more of a character type, a graphic type, and a sound type.

4. The electronic lock with an anti-collision structure according to claim 1, characterized in that: The front end of the slide plate corresponds to the lock core side and is provided with a chamfer, which matches the outer edge surface of the lock core.

5. The electronic lock with an anti-collision structure according to claim 1, characterized in that: The lock structure also includes a mechanical opening part, which includes a lever, one end of which is sleeved on the lower part of the lock core, and the other end is provided with a guide column arranged perpendicular to the base plate, and the end of the guide column is slidably connected to the arc-shaped slide on the base plate, pushing the guide column to move in the arc-shaped slide, thereby driving the lock core to rotate.

6. The electronic lock with an anti-collision structure according to claim 5, characterized in that: The arc-shaped slideway is a fan-shaped hole, the guide column is perpendicular to the bottom plate and falls into the fan-shaped hole, and its movement arc is adapted to the displacement distance of the lock core from the closed state to the open state.

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