Automatic locking device

Abstract

The present invention relates to an automatic locking device, comprising a data charging head, a snap ring, a mounting plate, a push rod, a positioning rod, a connecting rod device, a servo motor and a controller, wherein the connecting rod device comprises a connecting rod a and a connecting rod b, the mounting plate is fixedly connected to the outer surface of the object to be locked, one end of the connecting rod a is movably connected to one end of the connecting rod b; one end of the push rod is attached to the other end of the connecting rod a, and the positioning rod is attached to the other end of the connecting rod b; the positioning rod is movably connected to the push rod; the output shaft of the servo motor is movably connected to the positioning rod; the servo motor and the data charging head are both electrically connected to the controller; the data charging head is used as the controller function, and the controller controls the servo motor to provide power, so that the positioning rod can be withdrawn from the positioning groove, thereby achieving the purpose of unlocking; when closing the lock, the snap ring pushes the connecting rod a to move along the direction of the spring a, and the interlocking structure of the connecting rod device, the positioning rod and the push rod ensures that the push rod can effectively pass through the snap ring, thereby achieving the purpose of locking. The automatic lock has a simple structure and is safe and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of safety protection, and in particular to an automatic locking device. Background Art

[0002] It is inevitable for people to store some items in their lives. When storing items, a simple, convenient and safe locking device is needed. Especially in the modern fast-paced society, more and more people participate in online shopping. Express delivery and express boxes have become common terms in human life. How to ensure that the express delivery arrives smoothly in the hands of the buyer and the safety of the express delivery are issues that people often consider.

[0003] Traditional automatic locks require their own power supply and long-term power supply, which consumes a lot of energy. When the power supply is out of power, it is easy to cause the lock to fail. For example, Fengchao self-service lockers also have automatic locks, but they use electromagnets and cannot automatically reset in the event of a power outage. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a safe and reliable motor automatic lock structure that does not require its own power supply and can be opened and closed stably.

[0005] The object of the present invention is achieved by the following technical solution: an automatic locking device, including a mounting plate, a push rod, a positioning rod, a connecting rod device, a servo motor and a controller; wherein:

[0006] The push rod, positioning rod, connecting rod device, servo motor and controller are all installed on the inner side of the mounting plate, and the mounting plate is fixedly connected to the outer surface of the object on which the lock is to be installed; the connecting rod device includes connecting rod a and connecting rod b, one end of connecting rod a is movably connected to one end of connecting rod b; one end of the push rod is in contact with the other end of connecting rod a, and the positioning rod is in contact with the other end of connecting rod b; the positioning rod is movably connected to the push rod; the output shaft of the servo motor is movably connected to the positioning rod; and the servo motor is electrically connected to the controller.

[0007] Preferably, a notch is provided at the length centerline position of the mounting plate, and the other end of the connecting rod a is placed in the notch; a spring a is provided at one end of the connecting rod a, and the connecting rod a is fixedly connected to one end of the spring a, and the other end of the spring a is fixedly connected to the mounting plate; a boss is provided at the end of the connecting rod a connected to the spring a, and the boss is in contact with the connecting rod b.

[0008] Preferably, a spring b is provided at one end of the connecting rod b, one end of the spring b is fixedly connected to the connecting rod b, and the other end of the connecting rod b is fixedly connected to the mounting plate; a positioning platform a is provided at the other end of the connecting rod b, and the positioning platform a is movably connected to the positioning rod; the center of the connecting rod b is located at the mounting plate and is connected via a hinge.

[0009] Preferably, a spring c is provided at one end of the positioning rod, and the spring c is fixed along the axis between the positioning rod and the mounting plate; the other end of the positioning rod is movably connected to the push rod; a positioning platform b and a wedge-shaped platform are respectively provided on two parallel side surfaces of the positioning rod, and a boss is provided on the side surface of the output shaft of the servo motor, and the positioning dimension of the boss matches the positioning dimension of the wedge-shaped platform; the positioning dimension of the positioning platform b matches the positioning dimension layer of the positioning platform a.

[0010] Preferably, a spring d is provided at the other end of the push rod, and the spring d is fixed along the axis between the push rod and the mounting plate; a positioning groove and a toggle column are provided on the side of the push rod, and the geometric dimensions of the positioning groove match the geometric dimensions of the other end of the positioning rod; the toggle column is perpendicular to the normal of the positioning groove.

[0011] Preferably, it further comprises a lock shell and a snap ring, wherein the lock shell is provided with a bar hole, the position and size of the bar hole match the position and size of the toggle post; and the snap ring is fixedly connected to the cover of the article to be locked.

[0012] An operating principle of an automatic locking device includes the following steps:

[0013] S1. When locked, the snap ring is inserted into the notch under human power, and the snap ring pushes the connecting rod a to move along the direction of spring a;

[0014] S10. The boss on the connecting rod a presses against the connecting rod b, so that one end of the connecting rod b moves along the direction of the spring b, and the card position station a at the other end of the connecting rod b withdraws from the card position station b on the positioning rod;

[0015] S11. As the snap ring continues to press downward, the ejector rod passes through the snap ring under the action of spring d, and the positioning rod is engaged in the positioning groove on the ejector rod under the action of spring c, thereby locking the ejector rod and locking the snap ring, thereby completing the locking of the automatic lock;

[0016] S2. When unlocking, the controller controls the servo motor to rotate a certain angle so that the boss on the output shaft acts on the wedge-shaped table to ensure that the positioning rod moves in the direction of the spring c, thereby exiting the positioning groove;

[0017] S21. One end of the connecting rod b rotates around the hinge under the action of the spring b, so that the end surface of the positioning platform a at the other end of the connecting rod b is in contact with the end surface of the positioning platform b. Under the action of the positioning platform a, the positioning rod is locked, so that the positioning rod will not be reset to the positioning groove due to the force of the spring c;

[0018] S22. Move the toggle column to make the push rod exit the retaining ring; under the action of the connecting rod a, the retaining ring pops out of the notch to complete the unlocking of the automatic lock; at the same time, since the connecting rod a moves along the extension direction of the spring a, it can block the push rod to ensure that the push rod will not reset, which is convenient for the next locking; and while the connecting rod a moves along the extension direction of the spring a, the connecting rod b rotates around the hinge under the action of the spring b, so that the positioning platform a exits the positioning platform b, and the positioning rod is pressed against the surface of the push rod under the action of the spring c, which is convenient for the next positioning to enter the positioning slot to position the push rod, so that the passive motor lock can be automatically locked.

[0019] The present invention has the following advantages:

[0020] 1. This automatic lock structure does not need its own power supply, reducing energy loss and saving energy;

[0021] 2. This device has strong linkage, which can well ensure the normal operation of the lock and automatically reset the lock when the power is off;

[0022] 3. This device is small in size and can be used in various occasions where there is demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of an automatic locking device;

[0024] Figure 2 It is a schematic diagram of the external structure of an automatic locking device;

[0025] Figure 3 Schematic diagram of the connection relationship between the connecting rod b and the positioning rod of the device;

[0026] In the figure: 1-controller; 2-notch; 3-rod; 4-positioning slot; 5-sliding column; 6-positioning rod; 7-output shaft; 8-servo motor; 9-data charging head; 10-connecting rod b; 11-connecting rod a; 12-positioning platform a; 13-positioning platform b. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0028] like Figure 1 , Figure 2 and Figure 3As shown, an automatic locking device includes a mounting plate, a push rod 3, a positioning rod 6, a connecting rod device, a servo motor 8 and a controller 1; the push rod 3, the positioning rod 6, the connecting rod device, the servo motor 8 and the controller 1 are all installed on the inner side of the mounting plate, and the mounting plate is fixedly connected to the outer surface of the object to be locked; the connecting rod device includes a connecting rod a11 and a connecting rod b10, and one end of the connecting rod a11 is movably connected to one end of the connecting rod b10; one end of the push rod 3 is in contact with the other end of the connecting rod a11, and the positioning rod 6 is matched with the other end of the connecting rod b10, the positioning rod 6 is in contact with the connecting rod b10 when unlocking, and the positioning rod 6 is not in contact with the connecting rod b10 when locking, and the positioning rod 6 is in a free state; the positioning rod 6 is movably connected to the push rod 3; the output shaft 7 of the servo motor 8 is movably connected to the positioning rod 6; the servo motor 8 is electrically connected to the controller 1.

[0029] Preferably, a notch 2 is provided at the length centerline position of the mounting plate, and the other end of the connecting rod a11 is placed in the notch 2; a spring a is provided at one end of the connecting rod a11, the connecting rod a11 is fixedly connected to one end of the spring a, and the other end of the spring a is fixedly connected to the mounting plate; a boss is provided at the end of the connecting rod a11 connected to the spring a, the boss is in contact with the connecting rod b10, a wedge-shaped surface is provided on the connecting rod b10, and the boss is in contact with the wedge-shaped surface.

[0030] Preferably, a spring b is provided at one end of the connecting rod b10, one end of the spring b is fixedly connected to the connecting rod b10, and the other end of the connecting rod b10 is fixedly connected to the mounting plate; the other end of the connecting rod b10 is provided with a positioning platform a12, and the positioning platform a12 is movably connected to the positioning rod 6; the center of the connecting rod b10 is connected to the mounting plate through a hinge to ensure that the connecting rod b10 can rotate around the hinge.

[0031] Preferably, when locking, the connecting rod a11 withdraws along the axial direction of the spring a, the boss abuts against the wedge surface on the connecting rod b10 and causes one end of the connecting rod b10 to move along the normal direction of the wedge surface, thereby causing the positioning platform a12 to withdraw from the positioning platform b13.

[0032] Preferably, a spring c is provided at one end of the positioning rod 6, and the spring c is fixed along the axis between the positioning rod 6 and the mounting plate; the other end of the positioning rod 6 is movably connected to the top rod 3; a positioning table b13 and a wedge-shaped table are respectively provided on the two parallel side surfaces of the positioning rod 6, and a boss is provided on the side of the output shaft 7 of the servo motor 8, and the positioning dimension of the boss matches the positioning dimension of the wedge-shaped table; the positioning dimension of the positioning table b13 matches the positioning dimension of the positioning table a12.

[0033] Preferably, a spring d is provided at the other end of the push rod 3, and the spring d is fixed along the axis between the push rod 3 and the mounting plate; a positioning groove 4 and a toggle column 5 are provided on the side of the push rod 3, and the geometric dimensions of the positioning groove 4 match the geometric dimensions of the other end of the positioning rod 6; the toggle column 5 is perpendicular to the normal of the positioning groove 4.

[0034] Preferably, it further comprises a lock shell and a snap ring, wherein the lock shell is provided with a bar hole, the position and size of the bar hole match the position and size of the toggle post 5; and the snap ring is fixedly connected to the cover of the article to be locked.

[0035] Preferably, the controller 1 is a PCB controller.

[0036] Preferably, a QR code or barcode is affixed to the lock housing for connecting the lock to the service platform cloud.

[0037] Preferably, the power input terminal of the controller 1 is connected to a data charger 9, and the data charger 9 can use the mobile phone as a temporary power source.

[0038] Preferably, a data charging head slot is also provided on the housing.

[0039] Preferably, the mounting plate is a rectangular structure, and a mounting hole is provided at each right angle.

[0040] Preferably, the data charging head 9 is inserted into the data charging head slot by rotating 90° clockwise from the inside to the outside.

[0041] An operating principle of an automatic locking device includes the following steps:

[0042] S1. When locked, the snap ring is inserted into the notch 2 under human action, and the snap ring pushes the connecting rod a11 to move along the direction of the spring a;

[0043] S10. The boss on the connecting rod a11 presses against the connecting rod b10, so that one end of the connecting rod b10 moves along the direction of the spring b, and the other end of the connecting rod b10 stops a12 and exits the positioning rod 6 on the positioning station b13;

[0044] S11. As the snap ring continues to be pressed downward, the ejector pin 3 passes through the snap ring under the action of the spring d, and the positioning rod 6 is snapped into the positioning groove 4 on the ejector pin 3 under the action of the spring c, thereby locking the ejector pin 3, achieving the purpose of locking the snap ring, and completing the locking of the automatic lock;

[0045] S2. When unlocking, the controller 1 controls the servo motor 8 to rotate a certain angle so that the boss on the output shaft 7 acts on the wedge-shaped table to ensure that the positioning rod 6 moves along the compression direction of the spring c, thereby exiting the positioning groove 4;

[0046] S21. One end of the connecting rod b10 rotates around the hinge under the action of the spring b, so that the end surface of the positioning table a12 of the other end of the connecting rod b10 is in contact with the end surface of the positioning table b13. Under the action of the positioning table a12, the positioning rod 6 is locked, so that the positioning rod 6 will not be reset to the positioning groove 4 due to the force of the spring c;

[0047] S22. Move the toggle column 5 to make the push rod 3 exit the retaining ring; under the action of the connecting rod a11, the retaining ring pops out of the notch 2 to complete the unlocking of the automatic lock; at the same time, since the connecting rod a11 moves along the extension direction of the spring a, it can block the push rod 3 to ensure that the push rod 3 will not reset, which is convenient for the next locking; and while the connecting rod a11 moves along the extension direction of the spring a, the connecting rod b10 rotates around the hinge under the action of the spring b, so that the positioning platform a12 exits the positioning platform b13, and the positioning rod 6 is pressed against the surface of the push rod 3 under the action of the spring c, which is convenient for the next positioning to enter the positioning slot 4 to position the push rod 3, so that the passive motor lock can be automatically locked.

Claims

1. An automatic locking device, characterized in that: It comprises a mounting plate, a push rod (3), a positioning rod (6), a connecting rod device, a servo motor (8) and a controller (1); wherein: The push rod (3), the positioning rod (6), the connecting rod device, the servo motor (8) and the controller (1) are all mounted on the inner side of a mounting plate, and the mounting plate is fixedly connected to the outer surface of the object to be locked; the connecting rod device comprises a connecting rod a (11) and a connecting rod b (10), one end of the connecting rod a (11) is movably connected to one end of the connecting rod b (10); one end of the push rod (3) is in contact with the other end of the connecting rod a (11), and the positioning rod (6) is matched with the other end of the connecting rod b (10); the positioning rod (6) is movably connected to the push rod (3); the output shaft (7) of the servo motor (8) is movably connected to the positioning rod (6); and the servo motor (8) is electrically connected to the controller (1); A notch (2) is provided at the center line of the length of the mounting plate, and the other end of the connecting rod a (11) is placed in the notch (2); a spring a is provided at one end of the connecting rod a (11), the connecting rod a (11) is fixedly connected to one end of the spring a, and the other end of the spring a is fixedly connected to the mounting plate; a boss is provided at the end of the connecting rod a (11) connected to the spring a, and the boss is in contact with the connecting rod b (10); A spring b is provided at one end of the connecting rod b (10), one end of the spring b is connected to the connecting rod b (10), and the other end of the connecting rod b (10) is fixedly connected to the mounting plate; a positioning platform a (12) is provided at the other end of the connecting rod b (10), and the positioning platform a (12) is movably connected to the positioning rod (6); the center of the connecting rod b (10) is connected to the mounting plate via a hinge; A spring c is provided at one end of the positioning rod (6), and the spring c is fixed along the axis between the positioning rod (6) and the mounting plate; the other end of the positioning rod (6) is movably connected to the push rod (3); a positioning platform b (13) and a wedge-shaped platform are provided on two parallel side surfaces of the positioning rod (6), respectively; a boss is provided on the side surface of the output shaft (7) of the servo motor (8), and the positioning dimension of the boss matches the positioning dimension of the wedge-shaped platform; the positioning dimension of the positioning platform b (13) matches the positioning dimension of the positioning platform a (12); The other end of the push rod (3) is provided with a spring d, and the spring d is fixed along the axis between the push rod (3) and the mounting plate; a positioning groove (4) and a toggle column (5) are provided on the side of the push rod (3), and the geometric dimensions of the positioning groove (4) match the geometric dimensions of the other end of the positioning rod (6); the toggle column (5) is perpendicular to the normal of the positioning groove (4); It also comprises a lock housing and a snap ring, wherein the lock housing is provided with a bar hole, the position and size of the bar hole match the position and size of the toggle column (5); and the snap ring is fixedly connected to the cover of the object to be locked.

2. The method for operating an automatic locking device according to claim 1, characterized in that: The following steps are involved: When locking, the snap ring is inserted into the notch (2) under the action of manpower, and the snap ring pushes the connecting rod a (11) to move along the direction of spring a; the boss on the connecting rod a (11) presses against the connecting rod b (10), so that one end of the connecting rod b (10) moves along the direction of spring b, and the positioning platform a (12) at the other end of the connecting rod b (10) withdraws from the positioning platform b (13) on the positioning rod (6); as the snap ring continues to press downward, the ejector rod (3) passes through the snap ring under the action of spring d, and the positioning rod (6) is inserted into the positioning groove (4) on the ejector rod (3) under the action of spring c, thereby locking the ejector rod (3), achieving the purpose of locking the snap ring, and completing the locking of the automatic lock; When unlocking, the controller (1) controls the servo motor (8) to rotate a certain angle, so that the boss on the output shaft (7) acts on the wedge-shaped table, ensuring that the positioning rod (6) moves along the direction of the spring c, thereby exiting the positioning groove (4); The specific steps for unlocking include: S21. Under the action of spring b, one end of connecting rod b (10) rotates around the hinge, so that the end surface of the positioning platform a (12) at the other end of connecting rod b (10) is in contact with the end surface of the positioning platform b (13). Under the action of positioning platform a (12), the positioning rod (6) is locked, so that the positioning rod (6) will not be reset to the positioning groove (4) due to the action of spring c. S22. The toggle column (5) is moved to make the push rod (3) exit the retaining ring; the retaining ring is ejected from the notch (2) under the action of the connecting rod a (11), thereby completing the unlocking of the automatic lock; at the same time, since the connecting rod a (11) moves along the extension direction of the spring a, it can block the push rod (3), ensuring that the push rod (3) will not reset, thereby facilitating the next locking; and while the connecting rod a (11) moves along the extension direction of the spring a, the connecting rod b (10) rotates around the hinge under the action of the spring b, thereby making the positioning platform a (12) exit the positioning platform b (13), and the positioning rod (6) is pressed against the surface of the push rod (3) under the action of the spring c, thereby facilitating the next positioning into the positioning groove (4) to position the push rod (3), thereby realizing that the passive motor lock can be automatically locked.

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