Electric control lock

Abstract

The utility model discloses an electric control lock, which belongs to the technical field of locks and specifically comprises a lock back plate, a locking mechanism and a mounting plate, a lock hook is mounted on one side, close to the locking mechanism, of the mounting plate, a control module mounting frame for mounting a controller is arranged on one side of the top of the lock back plate, and a limit sensor is mounted on the control module mounting frame; the locking mechanism is movably installed on the inner side of the lock back plate through cooperation of the driving assembly and the connecting assembly. Compared with a traditional electric control lock, the electric control lock has the advantages that the lock cylinder mechanism has the front-back telescopic function after being matched with the driving assembly, the electric control lock can adapt to cabinet doors with different gap widths caused by EMC shielding strips of different specifications, and the application range is extremely wide; in the whole door closing process, an operator does not need to vigorously push and collide the cabinet door, so that huge collision noise can be effectively avoided, the mute closing effect is achieved, the experience feeling of a user when the cabinet door is closed can be greatly improved, and the service life of the lock and the service life of the cabinet door can be effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of locks, and in particular relates to an electric controlled lock. Background Art

[0002] Electric locks are a very common type of intelligent electric drive locks, which are mostly used to lock the doors of various cabinets, including but not limited to medical consumables cabinets, medical RFID smart cabinets, commercial vending machines, express cabinets, RFID filing cabinets, RFID book cabinets and other fixed cabinets or cabinet doors that need to be opened and closed, and are applicable to both single-door and double-door.

[0003] Take the current medical cabinets as an example (such as medical consumables cabinets); based on hygiene and safety considerations, there are airtightness requirements or electromagnetic shielding requirements inside and outside the cabinets. For example: storing consumables commonly used in surgery, such as heart stents, cardiovascular guidewires and other high-value consumables. Since the equipment and materials are identified using ultra-high frequency RFID solutions, there are very high requirements for electromagnetic isolation inside and outside the cabinet to prevent cross-reading or radio frequency leakage; in order to prevent leakage in the gap between the cabinet and the cabinet door, high-density compressed EMC shielding strips are used to fill it. This will result in the user having to push the cabinet door hard to close the door, resulting in a loud impact sound, resulting in a bad customer experience, and long-term operation to close the cabinet door will easily cause the cabinet door's locking mechanism and hinges to be damaged or loose, thereby affecting the cabinet's shielding effect or shortening its service life.

[0004] To this end, an electric control lock is proposed which can adapt to various cabinet door sealing structures and facilitate the locking and closing of the cabinet door. Utility Model Content

[0005] The purpose of the utility model is to provide an electric control lock to solve the above problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An electric control lock comprises a lock back plate, a locking mechanism and a mounting plate, wherein a lock hook is mounted on one side of the mounting plate close to the locking mechanism, a control module mounting frame for mounting a controller is provided on one side of the top of the lock back plate, and a limit sensor is mounted on the control module mounting frame.

[0008] Furthermore, the locking mechanism is movably mounted on the inner side of the lock back plate through a driving assembly and a connecting assembly.

[0009] Furthermore, the drive assembly includes a screw seat installed laterally on the inner side of the lock back plate, and a transmission screw and a stepper motor installed on the screw seat. The rotating shaft of the stepper motor is transmission-connected to the transmission screw, and a screw slider is slidably installed on the screw seat to form a screw transmission structure with the transmission screw.

[0010] Furthermore, the connecting assembly includes a connecting plate fixed on the surface of the lead screw slider, a sensing head is installed on one side of the top of the connecting plate, and a lock core cover plate is fixed on the bottom of the connecting plate.

[0011] Furthermore, there are two limit sensors, which are installed side by side on a control module mounting frame, and the inner side of the control module mounting frame is used to install a PLC controller for controlling the operation of the stepper motor.

[0012] Furthermore, the sensor head is designed to be L-shaped, and the front end of the sensor head is located at the bottom of the control module mounting frame to facilitate limit sensor recognition.

[0013] Furthermore, a guide wheel assembly is installed on the back of the locking mechanism and is in rolling cooperation with the lock back plate.

[0014] Furthermore, the locking mechanism includes a lock core back plate, and the lock core back plate and the lock core cover plate are assembled and fixed by double-headed riveted isolation columns, and the lock core back plate and the lock core cover plate are parallel to each other.

[0015] Furthermore, a positioning notch and a positioning angle are integrally formed at the upper and lower positions of the front end of the lock core back plate, respectively, and a notch is provided between the positioning notch and the positioning angle.

[0016] Furthermore, the locking mechanism also includes a positioning block fixed between the lock core back plate and the lock core cover plate, and a lock tongue and a locking block rotatably installed at the front end and bottom positions of the positioning block through a pin shaft and a bearing. A No. 1 torsion spring and a No. 2 torsion spring are respectively fixed between the top of the locking block and the bottom of the fixed block and between the side of the lock tongue and the front end of the fixed block through a pin column.

[0017] Furthermore, a locking sensor is installed on one side of the top of the positioning block that is opened into the positioning notch.

[0018] Furthermore, an unlocking frame is integrally formed on one side of the bottom of the locking block near the tail end, the side of the unlocking frame near the lock tongue is designed with a slope, and the middle part of the unlocking frame adopts a through-groove design, and an unlocking pile is fixed on the bottom of the lock back plate between the lock tongue and the unlocking frame.

[0019] Furthermore, the bottom end of the lock tongue is designed as a semicircular arc structure, and when the lock tongue forms a locking action on the lock hook, the front end of the locking block and the side surface of the bottom end of the lock tongue are in vertical contact and cooperation.

[0020] Furthermore, a rotatable directional guide wheel is installed between the lock core back plate and the lock core cover plate and on the side of the unlocking frame away from the unlocking pile. A traction steel wire rope is wound around the surface of the directional guide wheel. One end of the steel wire traction rope is connected to the cabinet door emergency unlocking mechanism, and the other end of the steel wire traction rope passes through the unlocking frame and is respectively connected to the emergency unlocking ball and tension spring.

[0021] Furthermore, one end of the tension spring is fixed to the back plate of the lock core, and the emergency unlocking ball is located between the tension spring and the unlocking frame.

[0022] Beneficial effects:

[0023] The difference between the utility model and the traditional electric lock is that the lock core mechanism has the function of telescopic extension and retraction after the cooperation of the driving component, and by changing the displacement distance of the driving component, the electric lock can adapt to cabinet doors with different gap widths caused by EMC shielding strips of different specifications, and the application range is extremely wide; and during use, when the cabinet door is opened, its locking mechanism is extended forward as a whole under the drive of the driving component and stands by, and when the cabinet door is closed, the lock tongue and the lock hook cooperate to complete the locking action, and then the driving component drives the entire locking mechanism to retract, thereby pulling the cabinet door tightly closed, and the entire door closing process does not require the operator to push the cabinet door vigorously, thereby effectively avoiding the generation of huge impact noise, thereby achieving the effect of silent closing, which can greatly improve the user's experience when closing the cabinet door, and can effectively extend the service life of the lock and the cabinet door. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0025] Figure 2 The structure of the utility model after decomposition is shown in FIG. Figure 1 ;

[0026] Figure 3 The structure of the utility model after decomposition is shown in FIG. Figure 2 .

[0027] In the figure: 1. Lock back plate; 101. Control module mounting frame; 102. Limit sensor; 2. Mounting plate; 201. Lock hook; 3. Drive assembly; 301. Screw seat; 302. Stepper motor; 303. Drive screw; 304. Screw slider; 4. Connecting assembly; 401. Connecting plate; 402. Sensor head; 403. Lock core cover plate; 5. Locking mechanism; 501. Lock core back plate; 502. Positioning groove 503, locking sensor; 504, positioning block; 505, locking tongue; 506, locking block; 507, pin shaft; 508, bearing; 509, torsion spring No. 1; 510, torsion spring No. 2; 511, unlocking frame; 512, directional guide wheel; 513, unlocking pile; 514, emergency unlocking ball; 515, traction wire rope; 516, notch; 517, positioning angle; 518, tension spring; 6, guide wheel assembly. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0029] Example:

[0030] In view of the fact that the lock core structure of the current electric lock adopts a fixed installation structure design, some cabinets that require airtightness or shielding when using this type of electric lock, in order to overcome the cabinet door gap caused by the sealing strip or shielding strip, when closing the cabinet door, the cabinet door must be pushed hard to make the lock hook and the lock tongue cooperate to form a locking action, which often results in a huge impact sound when the cabinet door is closed, resulting in a bad customer experience. In addition, long-term operation to close the cabinet door in this way can easily cause the cabinet door locking mechanism and hinges to be damaged or loose, thereby affecting the shielding effect of the cabinet or shortening the service life. To this end, we have improved the existing electric lock structure in view of this phenomenon, and proposed an electric lock that can adapt to various cabinet door sealing structures and facilitate cabinet door locking and closing; the specific plan is as follows:

[0031] like Figure 1-3 As shown, this embodiment provides an electric control lock, including a lock back plate 1, a locking mechanism 5 and a mounting plate 2, a lock hook 201 is installed on one side of the mounting plate 2 close to the locking mechanism 5, a control module mounting frame 101 for mounting the controller is provided on one side of the top of the lock back plate 1, a limit sensor 102 is installed on the control module mounting frame 101, and the inner side of the control module mounting frame 101 is used to install a PLC controller (not shown) for controlling the operation of the stepper motor 302, and the limit sensor 102 and the locking sensor 503 described below are electrically connected to the PLC controller installed on the inner side of the control module mounting frame 101, so that the PLC controller can accurately control the action of the drive component 3.

[0032] like Figure 2-3As shown, in order to realize the movable design of the lock core, so that the entire lock can adapt to various cabinet door sealing structures and facilitate the locking and closing of the cabinet door, its locking mechanism 5 is movably installed on the inner side of the lock back plate 1 through the driving component 3 and the connecting component 4, and the driving component 3 includes a screw seat 301 installed horizontally on the inner side of the lock back plate 1, and a transmission screw 303 and a stepper motor 302 installed on the screw seat 301, the rotating shaft of the stepper motor 302 is connected to the transmission screw 303, and a screw slider 304 that forms a screw transmission structure with the transmission screw 303 is slidably installed on the screw seat 301. It should be noted that: there are two limit sensors 102, and the two limit sensors 102 are installed side by side on the control module mounting frame 101. The main function of the limit sensor 102 is to use the following induction head 402 to implement real-time monitoring of the extension and retraction distance of the locking mechanism 5 controlled by the driving component 3.

[0033] At the same time, if Figure 2-3 As shown, the connecting component 4 includes a connecting plate 401 fixed on the surface of the lead screw slider 304, a sensing head 402 is installed on one side of the top of the connecting plate 401, a lock core cover plate 403 is fixed on the bottom of the connecting plate 401, and the sensing head 402 is L-shaped, and the front end of the sensing head 402 is located at the bottom of the control module mounting frame 101 to facilitate the recognition of the limit sensor 102.

[0034] like Figure 2 As shown, in order to keep the locking mechanism 5 stable and smooth during the lateral movement, a guide wheel assembly 6 that rolls with the lock back plate 1 is installed on the back of the locking mechanism 5 .

[0035] In order to enable the driving assembly 3 to drive the locking mechanism 5 to move through the connecting assembly 4, as shown in FIG. Figure 3 As shown, the locking mechanism 5 includes a lock core back plate 501, and the lock core back plate 501 and the lock core cover plate 403 are assembled and fixed by double-headed riveted isolation columns, and the lock core back plate 501 and the lock core cover plate 403 are parallel to each other.

[0036] The upper and lower positions of the front end of the lock core back plate 501 are respectively integrally formed with a positioning notch 502 and a positioning angle 517, and a notch 516 is provided between the positioning notch 502 and the positioning angle 517; the locking mechanism 5 also includes a positioning block 504 fixed between the lock core back plate 501 and the lock core cover plate 403, and a lock tongue 505 and a locking block 506 rotatably installed at the front end and bottom position of the positioning block 504 through a pin shaft 507 and a bearing 508, and a No. 1 torsion spring 509 and a No. 2 torsion spring 510 are respectively fixed between the top of the locking block 506 and the bottom of the fixed block and between the side of the lock tongue 505 and the front end of the fixed block through a latch column; a locking sensor 503 is installed on the side of the top of the positioning block 504 that is opened into the positioning notch 502, and the bottom end of the lock tongue 505 is designed as a semicircular arc structure, and the lock tongue 505 is against the lock hook 20 When the locking action is formed, the front end of the locking block 506 and the side surface of the bottom end of the lock tongue 505 are in vertical contact with each other, wherein the positioning notch 502 can limit the upper part of the lock tongue 505 to the left and right, and the positioning angle 517 is used to limit the bottom front side of the lock tongue 505 to prevent the bottom of the lock tongue 505 from turning forward, and the design of the notch 516 is mainly to facilitate the following lock hook 201 to cooperate with the lock buckle on the upper part of the lock tongue 505, and the locking sensor 503 is used to detect the upper position of the lock tongue 505 and feed back the real-time data of the state of the lock tongue 505 to the PLC controller; and the setting of the first torsion spring 509 and the second torsion spring 510, its main function is to cooperate with the positioning block 504 to apply force to the locking block 506 and the lock tongue 505, so that the locking block 506 can achieve the cooperation action of locking and unlocking with the lock tongue 505.

[0037] An unlocking frame 511 is integrally formed on one side of the bottom of the locking block 506 near the tail end. The side of the unlocking frame 511 near the lock tongue 505 is designed with a slope, and the middle part of the unlocking frame 511 adopts a through-groove design. An unlocking pile 513 is fixed at the bottom of the lock back plate 1 between the lock tongue 505 and the unlocking frame 511.

[0038] When the electric lock is in use and unlocked, the driving component 3 works to drive the locking mechanism 5 to move forward through the connecting component 4. When the unlocking frame 511 at the rear end of the locking block 506 contacts the unlocking post 513, since the unlocking post 513 is fixed to the lock back plate 1, when the locking mechanism 5 continues to move forward, the unlocking frame 511 rotates the locking block 506 clockwise through the inclined surface design on the front side and compresses the No. 1 torsion spring 509. At the same time, the locking block 506 rotates clockwise. When rotating, the front end of the locking block 506 is offset toward the bottom end of the lock tongue 505 until the front end of the locking block 506 is separated from the lock tongue 505. Therefore, after the lock tongue 505 loses the positioning constraint of the locking block 506, under the action of the second torsion spring 510, the upper part of the lock tongue 505 rotates clockwise, so that the lock hook 201 is separated from the lock tongue 505, and the door is opened. At this time, the locking mechanism 5 is driven by the driving component 3 to extend forward toward the outside of the cabinet door and stand by. When the cabinet door is closed, The operator only needs to gently close the cabinet door so that the lock hook 201 cooperates with the lock tongue 505, so that the lock tongue 505 is reset (the second torsion spring 510 is compressed). At the same time, after the lock sensor 503 detects the reset state data of the lock tongue 505, the PLC controller controls the drive component 3 to work, and synchronously drives the locking mechanism 5 to retract, so that the unlocking frame 511 at the bottom of the locking block 506 is separated from the unlocking column, and the locking block 506 is reset under the action of the first torsion spring 509, so that the front end of the locking block 506 is again against the rear side of the bottom of the lock tongue 505, so that the lock tongue 505 locks the lock hook 201 and positions it, and the drive component 3 continues to pull the locking mechanism 5 back through the connecting component 4, so that the cabinet door is gradually closed and squeezed. The sealing strip or shielding strip is squeezed. Compared with the traditional electric control lock, the whole process produces a subtle sound and the vibration generated by the locking action is extremely light, which can effectively protect the lock and the cabinet door structure, thereby extending the service life of the lock and the cabinet door.

[0039] In order to cope with emergency situations, the electric lock also needs to be linked with the traditional manual emergency unlocking mechanism. Therefore, a rotatable directional guide wheel 512 is installed between the lock core back plate 501 and the lock core cover plate 403 and on the side of the unlocking frame 511 away from the unlocking pile 513. A traction wire rope 515 is wound around the surface of the directional guide wheel 512. One end of the wire traction rope is connected to the cabinet door emergency unlocking mechanism, and the other end of the wire traction rope passes through the unlocking frame 511 and is respectively connected to the emergency unlocking ball 514 and the tension spring 518. One end of the tension spring 518 is fixed on the lock core back plate 501, and the emergency unlocking ball 514 is located between the tension spring 518 and the unlocking frame 511. When the driving mechanism loses its function and the cabinet door cannot be unlocked by the electric control mechanism, the operator can use the key and the cabinet door emergency unlocking mechanism to perform manual unlocking operations. It should be further explained that the cabinet door emergency unlocking mechanism is a conventional mechanism setting of the current smart cabinet. Its main purpose is to be used as an emergency unlocking mechanism when the smart electromagnetic lock, electric control lock and electric suction lock lose their function.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric control lock, comprising a lock back plate (1), a locking mechanism (5) and a mounting plate (2), wherein a lock hook (201) is mounted on a side of the mounting plate (2) close to the locking mechanism (5), characterized in that: A control module mounting frame (101) for mounting a controller is provided on one side of the top of the lock back plate (1), and a limit position sensor (102) is mounted on the control module mounting frame (101); The locking mechanism (5) is movably mounted on the inner side of the lock back plate (1) through the driving component (3) and the connecting component (4); The driving assembly (3) comprises a screw seat (301) installed laterally on the inner side of the lock back plate (1), a transmission screw (303) and a stepping motor (302) installed on the screw seat (301), the rotating shaft of the stepping motor (302) being transmission-connected with the transmission screw (303), and a screw slider (304) forming a screw transmission structure with the transmission screw (303) being slidably installed on the screw seat (301); The connecting assembly (4) comprises a connecting plate (401) fixed on the surface of the lead screw slider (304), a sensing head (402) is installed on one side of the top of the connecting plate (401), and a lock core cover plate (403) is fixed on the bottom of the connecting plate (401).

2. An electric control lock according to claim 1, characterized in that: There are two limit sensors (102), which are installed side by side on a control module mounting frame (101). The inner side of the control module mounting frame (101) is used to install a PLC controller for controlling the operation of the stepping motor (302).

3. An electric control lock according to claim 1, characterized in that: The sensing head (402) is designed in an L shape, and the front end of the sensing head (402) is located at the bottom of the control module mounting frame (101) to facilitate identification by the limit sensor (102).

4. The electric control lock according to claim 1, characterized in that: A guide wheel assembly (6) that rolls with the lock back plate (1) is installed on the back of the locking mechanism (5).

5. The electric control lock according to claim 1, characterized in that: The locking mechanism (5) comprises a lock core back plate (501), the lock core back plate (501) and the lock core cover plate (403) are assembled and fixed via double-headed riveted isolation columns, and the lock core back plate (501) and the lock core cover plate (403) are parallel to each other.

6. An electric control lock according to claim 5, characterized in that: A positioning notch (502) and a positioning angle (517) are respectively integrally formed at the upper and lower positions of the front end of the lock core back plate (501), and a notch (516) is provided between the positioning notch (502) and the positioning angle (517).

7. The electric control lock according to claim 1, characterized in that: The locking mechanism (5) further comprises a positioning block (504) fixed between the lock core back plate (501) and the lock core cover plate (403), and a lock tongue (505) and a locking block (506) rotatably mounted at the front end and the bottom of the positioning block (504) through a pin shaft (507) and a bearing (508), wherein a first torsion spring (509) and a second torsion spring (510) are respectively fixed between the top of the locking block (506) and the bottom of the fixing block and between the side of the lock tongue (505) and the front end of the fixing block through latch columns; A locking sensor (503) is installed on one side of the top of the positioning block (504) that is opened into the positioning notch (502).

8. An electric control lock according to claim 7, characterized in that: An unlocking frame (511) is integrally formed on one side of the bottom of the locking block (506) close to the rear end, a side of the unlocking frame (511) close to the lock tongue (505) is designed as an inclined surface, and a through-grooved design is adopted in the middle of the unlocking frame (511), and an unlocking pile (513) is fixed at the bottom of the lock back plate (1) between the lock tongue (505) and the unlocking frame (511).

9. The electric control lock according to claim 7, characterized in that: The bottom end of the locking tongue (505) is designed as a semicircular arc structure. When the locking tongue (505) forms a locking action on the locking hook (201), the front end of the locking block (506) and the side surface of the bottom end of the locking tongue (505) are in vertical contact and cooperation.

10. An electric control lock according to claim 5, characterized in that: A rotatable directional guide wheel (512) is installed between the lock core back plate (501) and the lock core cover plate (403) and on the side of the unlocking frame (511) away from the unlocking pile (513). A traction wire rope (515) is wound around the surface of the directional guide wheel (512). One end of the traction wire rope is connected to the cabinet door emergency unlocking mechanism, and the other end of the traction wire rope passes through the unlocking frame (511) and is respectively connected to an emergency unlocking ball (514) and a tension spring (518); One end of the tension spring (518) is fixed on the lock core back plate (501), and the emergency unlocking ball (514) is located between the tension spring (518) and the unlocking frame (511).

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