Electric plug-in type flexible locking mechanism

Abstract

The invention discloses an electric plug-in type flexible locking mechanism, and belongs to the technical field of elevating machine locking mechanisms, the electric plug-in type flexible locking mechanism comprises an electric driving mechanism, an outer shell, a screw rod, a lock pin, a contact device, a locking conduction device and a locking buffer device, the screw rod is arranged in the outer shell, the lock pin is in threaded connection with the screw rod, and the lock pin is in threaded connection with the electric driving mechanism. The locking conduction device is arranged on one side of the outer shell, the electric driving mechanism is arranged on the outer side of the outer shell and used for driving the lead screw to rotate so that the lock pin can horizontally move to be close to or away from the locking conduction device, and the contact device is arranged below the locking conduction device. The locking buffer device is arranged at the end, facing the locking conduction device, of the lock pin, the sliding metal block moving vertically can be conveniently locked, and the situation that the lock pin is damaged due to forced locking when the sliding metal block does not reach the preset position is prevented through the locking buffer device.

Description

Technical Field

[0001] This invention relates to the field of locking mechanism technology, specifically to an electrically inserted flexible locking mechanism. Background Technology

[0002] Locking mechanisms generally consist of a locking pin and a locking conduction device. Due to their high locking reliability, they are widely used in aerospace, shipbuilding, automotive, and warehousing industries. Currently, most locking mechanisms on the market use a locking pin shaft (plain shaft) directly inserted into the locking pin hole. After insertion, the locking pin shaft is axially fixed using cotter pins or washers and nuts. When opening is needed, the cotter pins or washers and nuts are removed, and the locking pin shaft is pulled out to complete the opening action. This locking and opening method has problems such as incorrect locking position judgment in precision locking conditions, which can easily damage the locking mechanism, resulting in slow locking speed and low locking reliability. When locking at heights, there is a risk of falls from height. Furthermore, when using manual locking pins for direct locking, they are prone to loosening when dealing with heavy load-bearing components, leading to locking failure. Removing cotter pins or washers and nuts requires additional tools, creating new sources of danger. Therefore, it is necessary to design an electrically operated, insertion-type flexible locking mechanism. Summary of the Invention

[0003] The purpose of this invention is to provide an electrically inserted flexible locking mechanism to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an electric insertion flexible locking mechanism, comprising an electric drive mechanism, a housing, a lead screw, a locking pin, a contact device, a locking conduction device, and a locking buffer device. The lead screw is disposed within the housing, the locking pin is threadedly connected to the lead screw, the locking conduction device is disposed on one side of the housing, the electric drive mechanism is disposed outside the housing for driving the lead screw to rotate so that the locking pin moves horizontally closer to or away from the locking conduction device, the contact device is disposed below the locking conduction device, and the locking buffer device is disposed at the end of the locking pin facing the locking conduction device.

[0005] The locking and conducting device includes a sliding metal block that moves vertically in sync with the external lifting device. The sliding metal block has a locking hole and is electrically connected to the external electrical circuit.

[0006] The contact device includes a contact mounting base located below the sliding metal block. The contact mounting base is provided with a sliding groove that cooperates with the sliding metal block. The sliding groove is provided with a spring assembly located at the bottom of the sliding groove and a contact located on the side of the sliding groove. The contact is electrically connected to an external electrical circuit.

[0007] Initially, the sliding metal block is located outside the sliding groove, the first spring assembly is uncompressed, and the electrical circuit is open. When the external lifting device moves the sliding metal block downward, the electric drive mechanism drives the lead screw to rotate, causing the locking pin to approach the sliding metal block until the locking buffer device contacts the sliding metal block. When the locking pin cannot enter the locking hole, the locking buffer device is compressed and deformed by the sliding metal block as the locking pin continues to move horizontally. The electric drive mechanism sends an abnormal current signal. When the abnormal current signal disappears as the sliding metal block continues to move downward, the locking buffer device enters the locking hole, the sliding metal block reaches the preset position, the first spring assembly is compressed, the contact point contacts the sliding metal block, and the electrical circuit is closed until the locking pin reaches the preset position, completing the locking operation.

[0008] In a further embodiment, the electric drive mechanism includes a drive motor disposed on the outside of the housing, and the output end of the drive motor is connected to a lead screw via a connecting device.

[0009] In a further embodiment, the connecting device includes a connecting screw and a driving key. The output shaft of the drive motor has a threaded hole, and the end of the lead screw adjacent to the drive motor has a light hole. The connecting screw is located in the threaded hole and the light hole. The output shaft of the drive motor has a first keyway, and the lead screw has a hub keyway 1 located outside the first keyway. The driving key is located in the first keyway and the hub keyway 1.

[0010] In a further embodiment, the locking buffer device includes a locking pin cover disposed at one end of the locking pin, the locking pin cover being connected to the buffer cover via a spring assembly two.

[0011] In a further embodiment, the outer casing is provided with a limiting device, which includes two limit switch protective covers disposed on the top of the outer casing. The limit switch protective covers are provided with limit switches extending into the outer casing, and the limit switches are electrically connected to the drive motor.

[0012] In a further embodiment, a second keyway is provided on the locking pin, and a hub keyway II is provided on one side of the second keyway on the outer shell, with guide keys provided in the second keyway and the hub keyway II.

[0013] In a further embodiment, a control module is provided on the outside of the drive motor. The control module is electrically connected to both the drive motor and the limit switch. The limit switch is used to detect whether there is an object within a certain distance of the lower end face. When the locking pin moves backward, and the distance between the upper surface of the guide key and the lower surface of the adjacent limit switch is less than a specified distance, the limit switch sends a signal to the control module. The control module controls the drive motor to stop rotating, and at this time, the locking pin cannot move backward. When the locking pin moves forward, and the distance between the upper surface of the guide key and the lower surface of the adjacent limit switch is less than a specified distance, the limit switch sends a signal to the control module. The control module controls the drive motor to stop rotating, and at this time, the locking pin cannot move forward.

[0014] In a further embodiment, a support device is provided inside the outer shell. The support device includes a guide ring and a support ring. A guide groove is provided at the bottom of the locking pin. The guide ring is disposed in the guide groove and slides in cooperation with the inner wall of the outer shell. The support ring is installed at one end of the lead screw by a fixing screw and slides in cooperation with the inner wall of the locking pin.

[0015] In a further embodiment, the inner diameter of the support ring is the same as the diameter of the lead screw stepped shaft, the outer surface of the support ring is spherical, and the support ring and the locking pin are in point contact.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the sliding metal block is moved downward by an external lifting device, and the electric drive mechanism drives the lead screw to rotate so that the locking pin approaches the sliding metal block until the locking buffer device contacts the sliding metal block. When the locking pin cannot enter the locking hole, the locking buffer device is blocked by the sliding metal block and deformed by pressure as the locking pin continues to move horizontally. The electric drive mechanism sends an abnormal current signal. When the abnormal current signal disappears as the sliding metal block continues to move downward, the locking buffer device enters the locking hole, the sliding metal block reaches the preset position, the spring assembly is in a compressed state, the contact is in contact with the sliding metal block, and the electrical circuit is in a closed state until the locking pin reaches the preset position, completing the locking work. The locking buffer device prevents damage to the locking pin caused by forcibly locking before the sliding metal block reaches the predetermined position. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is an overall sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the locking pin in the non-extended state of the present invention;

[0020] Figure 4 This is a schematic diagram of the locking pin in the extended state of the present invention;

[0021] Figure 5 This is a schematic diagram of the guide key setting structure of the present invention;

[0022] Figure 6 This is a front view of the connecting device of the present invention;

[0023] Figure 7 This is a side view of the connecting device of the present invention;

[0024] Figure 8 This is a schematic diagram of the support device structure of the present invention;

[0025] Figure 9 This is a schematic diagram of the contact device installation structure of the present invention;

[0026] Figure 10 This is a schematic diagram of the contact device and locking conduction device of the present invention;

[0027] Figure 11 This is a schematic diagram of the state where the contact point of the present invention is not in contact with the sliding metal block;

[0028] Figure 12 This is a schematic diagram of the contact state between the contact point and the sliding metal block in this invention;

[0029] The attached figures are labeled as follows: 1. Drive motor; 2. Limit device; 2-1. Limit switch protective cover; 2-2. Limit switch; 2-3. Guide key; 3. Connecting device; 3-1. Connecting screw; 3-2. Drive key; 4. Housing; 5. Lead screw; 6. Locking pin; 7. Support device; 7-1. Guide ring; 7-2. Support ring; 8. Contact device; 8-1. Contact mounting base; 8-2. Contact; 9. Locking and conducting device; 9-1. Sliding metal block; 9-2. Spring group one; 10. Locking and buffering device; 10. Locking pin cover; 10-1. Spring group two; 10-2. Buffer cover; 10-3. Detailed Implementation

[0030] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0031] Please see Figures 1-12The present invention provides a technical solution: an electric insertion flexible locking mechanism, comprising an electric drive mechanism, a housing 4, a lead screw 5, a locking pin 6, a contact device 8, a locking conduction device 9, and a locking buffer device 10. The lead screw 5 is disposed inside the housing 4, the locking pin 6 is threadedly connected to the lead screw 5, the locking conduction device 9 is disposed on one side of the housing 4, the electric drive mechanism is disposed outside the housing 4 for driving the lead screw 5 to rotate so that the locking pin 6 moves horizontally closer to or away from the locking conduction device 9, the contact device 8 is disposed below the locking conduction device 9, and the locking buffer device 10 is disposed at the end of the locking pin 6 facing the locking conduction device 9.

[0032] The locking and conducting device 9 includes a sliding metal block 9-1 that moves vertically in sync with the external lifting device. The sliding metal block 9-1 has a locking hole and is electrically connected to the external electrical circuit.

[0033] The contact device 8 includes a contact mounting base 8-1 located below the sliding metal block 9-1. The contact mounting base 8-1 is provided with a sliding groove that cooperates with the sliding metal block 9-1. The sliding groove is provided with a spring assembly 9-2 located at the bottom of the sliding groove and a contact 8-2 located on the side of the sliding groove. The contact 8-2 is electrically connected to an external electrical circuit. The sliding metal block 9-1 is connected to the positive terminal of the external electrical circuit, and the contact 8-2 is connected to the negative terminal of the external electrical circuit, or the sliding metal block 9-1 is connected to the negative terminal of the external electrical circuit, and the contact 8-2 is connected to the positive terminal of the external electrical circuit, so that when the sliding metal block 9-1 and the contact 8-2 are in contact, the external electrical circuit is connected to the sliding metal block 9-1 and the contact 8-2.

[0034] Initially, the sliding metal block 9-1 is located outside the sliding groove, the spring assembly 9-2 is in an uncompressed state, and the electrical circuit is in an open circuit state. When the external lifting device moves the sliding metal block 9-1 downward, the electric drive mechanism drives the lead screw 5 to rotate, causing the locking pin 6 to approach the sliding metal block 9-1, until the locking buffer device 10 contacts the sliding metal block 9-1. When the locking pin 6 cannot enter the locking hole, the locking buffer device 10 is blocked by the sliding metal block 9-1 and deformed as the locking pin 6 continues to move horizontally. The electric drive mechanism sends an abnormal current signal. When the abnormal current signal disappears as the sliding metal block 9-1 continues to move downward, the locking buffer device 10 enters the locking hole, the sliding metal block 9-1 reaches the preset position, the spring assembly 9-2 is in a compressed state, the contact 8-2 contacts the sliding metal block 9-1, and the electrical circuit is in a closed state, until the locking pin 6 reaches the preset position, completing the locking work.

[0035] In a further embodiment, the electric drive mechanism includes a drive motor 1 disposed on the outside of the housing 4, and the output end of the drive motor 1 is connected to the lead screw 5 through a connecting device 3.

[0036] Through the above technical solution, the drive motor 1 works and, in conjunction with the connecting device 3, drives the lead screw 5 to rotate. The lead screw 5 is a trapezoidal lead screw, which forms a trapezoidal thread pair with the locking pin 6, and has a self-locking function. After the locking work is completed, the trapezoidal thread pair can effectively prevent the locking pin 6 and the locking buffer device 10 from falling off the locking guide device 9. The drive motor 1 can be directly driven by an external remote control to perform locking or unlocking work, without the need for additional axial fixation using cotter pins or washer nuts.

[0037] In a further embodiment, the connecting device 3 includes a connecting screw 3-1 and a driving key 3-2. The output shaft of the drive motor 1 has a threaded hole, and the end of the lead screw 5 adjacent to the drive motor 1 has a light hole. The connecting screw 3-1 is located in the threaded hole and the light hole. The output shaft of the drive motor 1 has a first keyway, and the lead screw 5 has a hub keyway 1 located outside the first keyway. The driving key 3-2 is located in the first keyway and the hub keyway 1.

[0038] Through the above technical solution, by screwing the connecting screw 3-1 into the threaded hole and the smooth hole to form a threaded connection, the output shaft of the drive motor 1 and the lead screw 5 become one, preventing the lead screw 5 from moving axially. By installing the drive key 3-2 in the first keyway and the hub keyway, the rotation of the drive motor 1 drives the lead screw 5 to rotate through the drive key 3-2, thereby realizing the transmission of the torque of the drive motor 1 to the lead screw 5.

[0039] In a further embodiment, the locking buffer device 10 includes a locking pin cover 10-1 disposed at one end of the locking pin 6, and the locking pin cover 10-1 is connected to the buffer cover 10-3 through a spring assembly 10-2.

[0040] With the above technical solution, when the locking buffer device 10 contacts the sliding metal block 9-1, the buffer cover 10-3 contacts the sliding metal block 9-1. As the locking pin 6 continues to move forward, the buffer cover 10-3 is subjected to pressure, which causes the spring assembly 10-2 to shorten under pressure. The pressure on the spring assembly 10-2 is transmitted to the locking pin cover 10-1 and the locking pin 6. At this time, the axial force on the entire mechanism increases, and the current required for the drive motor 1 to drive increases, thereby issuing an abnormal current signal. At this time, the sliding metal block 9-1 is in the wrong position and has not reached the preset position, so it needs to be readjusted.

[0041] In a further embodiment, the outer shell 4 is provided with a limiting device 2, which includes two limit switch protective covers 2-1 provided on the top of the outer shell 4. The limit switch protective covers 2-1 are provided with limit switches 2-2 extending into the outer shell 4. The limit switches 2-2 are electrically connected to the drive motor 1.

[0042] Through the above technical solution, the limit switch 2-2, in conjunction with the drive motor 1, controls the extreme positions of the locking pin 6 to move forward and backward.

[0043] In a further embodiment, a second keyway is provided on the locking pin 6, and a hub keyway II is provided on the outer casing 4 on one side of the second keyway. Guide keys 2-3 are provided in the second keyway and the hub keyway II.

[0044] By installing the guide key 2-3 in the second keyway and the hub keyway 2, the locking pin 6 is prevented from rotating along its rotation axis and only performs linear motion.

[0045] In a further embodiment, a control module is provided on the outside of the drive motor 1. The control module is electrically connected to both the drive motor 1 and the limit switch 2-2. The limit switch 2-2 is used to detect whether there is an object within a certain distance on the lower end face. When the locking pin 6 moves backward, and the distance between the upper surface of the guide key 2-3 and the lower surface of the adjacent limit switch 2-2 is less than a specified distance, the limit switch 2-2 sends a signal to the control module. The control module controls the drive motor 1 to stop rotating. At this time, the locking pin 6 cannot move backward. When the locking pin 6 moves forward, and the distance between the upper surface of the guide key 2-3 and the lower surface of the adjacent limit switch 2-2 is less than a specified distance, the limit switch 2-2 sends a signal to the control module. The control module controls the drive motor 1 to stop rotating. At this time, the locking pin 6 cannot move forward.

[0046] Through the above technical solution, the moving locking pin 6 is detected by two limit switches 2-2. When the locking pin 6 moves forward, the limit switch 2-2 adjacent to the sliding metal block 9-1 operates, continuously detecting whether there is an object within a certain distance on the lower end face. When the locking pin 6 moves forward and the guide key 2-3 approaches the limit switch 2-2, the distance between the upper surface of the guide key 2-3 and the lower surface of the limit switch 2-2 is less than a specified distance. The limit switch 2-2 sends a signal to the control module, which then controls the drive motor 1 to stop rotating. At this time, the locking pin 6 has no... Similarly, when the locking pin 6 moves backward, the limit switch 2-2, which is adjacent to the drive motor 1, will work to detect whether there is an object within a certain distance on the lower end face in real time. When the locking pin 6 moves backward and the guide key 2-3 approaches the limit switch 2-2, the distance between the upper surface of the guide key 2-3 and the lower surface of the limit switch 2-2 is less than a specified distance. The limit switch 2-2 sends a signal to the control module, and the control module controls the drive motor 1 to stop rotating. At this time, the locking pin 6 cannot move backward, thus limiting the forward and backward movement of the locking pin 6 and ensuring that the locking pin 6 does not exceed the limit.

[0047] In a further embodiment, a support device 7 is provided inside the outer shell 4. The support device 7 includes a guide ring 7-1 and a support ring 7-2. A guide groove is provided at the bottom of the locking pin 6. The guide ring 7-1 is located in the guide groove and slides in cooperation with the inner wall of the outer shell 4. The support ring 7-2 is installed at one end of the lead screw 5 by a fixing screw and slides in cooperation with the inner wall of the locking pin 6.

[0048] Through the above technical solution, the outer shell 4 has an inner hole for accommodating the lead screw 5 and the locking pin 6. The outer diameter of the guide ring 7-1 is the same as the diameter of the inner hole of the outer shell 4, which prevents the outer edge of the locking pin 6 from directly contacting the inner hole of the outer shell 4 and plays a guiding and supporting role. The setting of the fixing screw prevents the support ring 7-2 from moving radially. The guide ring 7-1 is made of wear-resistant non-metallic material.

[0049] In a further embodiment, the inner diameter of the support ring 7-2 is the same as the diameter of the stepped shaft of the lead screw 5, the outer surface of the support ring 7-2 is spherical, and the support ring 7-2 and the locking pin 6 are in point contact.

[0050] Through the above technical solution, the support ring 7-2 provides a guiding support for the locking pin 6, wherein the support ring 7-2 is made of wear-resistant copper material.

[0051] Working principle: In the initial state, the sliding metal block 9-1 is located outside the sliding groove, the spring assembly 9-2 is in an uncompressed state, and the electrical circuit is in an open circuit state. When the external lifting device moves the sliding metal block 9-1 downward, the external lifting device transmits a signal to the drive motor 1. The drive motor 1 rotates, which drives the lead screw 5 to rotate through the drive key 3-2, causing the locking pin 6 to approach the sliding metal block 9-1 until the buffer cover 10-3 contacts the sliding metal block 9-1. When the locking pin 6 cannot enter the locking hole, the buffer cover 10-3 is blocked by the sliding metal block 9-1 and is pressed as the locking pin 6 continues to move horizontally. This causes the spring assembly 10-2 to shorten under pressure, and the pressure on the spring assembly 10-2 is transmitted to the locking pin cover 10-1 and the locking pin 6. At this time, the axial force on the entire mechanism increases, and the current required for the drive motor 1 to drive increases. The drive motor 1 sends an abnormal current signal. When the abnormal current signal disappears as the sliding metal block 9-1 continues to move downward, the buffer cover 10-3 enters the locking hole, the sliding metal block 9-1 reaches the preset position, the spring assembly 9-2 is in a compressed state, the contact 8-2 contacts the sliding metal block 9-1, and the electrical circuit is closed until the locking pin 6 reaches the preset position, completing the locking work.

[0052] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. An electric plug-in flexible locking mechanism, characterized in that, The utility model provides an electric drive mechanism, shell (4), screw rod (5), locking pin (6), contact device (8), locking and conducting device (9) and locking buffer device (10), the screw rod (5) is established in the shell (4), the locking pin (6) is screwed on the screw rod (5), the locking and conducting device (9) is established in the shell (4) one side, the electric drive mechanism is established in the shell (4) outside for driving the screw rod (5) rotation makes the locking pin (6) horizontal removal close or far from the locking and conducting device (9), the contact device (8) is established in the locking and conducting device (9) below, the locking buffer device (10) is established in the locking pin (6) towards the locking and conducting device (9) one end, The locking and conducting device (9) includes the sliding metal block (9-1) that moves vertically with the outside world lifting device synchronization, the sliding metal block (9-1) is seted up with locking hole, the sliding metal block (9-1) is connected with the outside world electrical circuit electricity, The contact device (8) includes the contact mounting seat (8-1) that is established in the sliding metal block (9-1) below, the contact mounting seat (8-1) is equipped with with the sliding groove that the sliding metal block (9-1) is matched, the sliding groove is equipped with with the spring group one (9-2) in the sliding groove bottom and the contact (8-2) in the sliding groove side, the contact (8-2) is connected with the outside world electrical circuit electricity, When initial state, the sliding metal block (9-1) is located outside the sliding groove, the spring group one (9-2) is in the uncompression state, the electrical circuit is in open circuit state, when the outside world lifting device drives the sliding metal block (9-1) to move down, the electric drive mechanism drives the screw rod (5) rotation makes the locking pin (6) close the sliding metal block (9-1), until the locking buffer device (10) with sliding metal block (9-1) contact, when the locking pin (6) cannot enter the locking hole, the locking buffer device (10) with the continuous horizontal movement of locking pin (6) is blocked by the sliding metal block (9-1) and is pressed to deform, the electric drive mechanism sends current abnormal signal, when the current abnormal signal disappears with the sliding metal block (9-1) continues to move down, the locking buffer device (10) enters the locking hole, the sliding metal block (9-1) reaches the preset position, the spring group one (9-2) is in the compressed state, the contact (8-2) with sliding metal block (9-1) contact, the electrical circuit is closed state, until the locking pin (6) reaches the preset position, completes locking work.

2. The electric plug-in flexible locking mechanism according to claim 1, wherein: The electric drive mechanism includes the drive motor (1) that is established in the shell (4) outside, the output of drive motor (1) is connected with screw rod (5) through connecting device (3).

3. The electric plug-in flexible locking mechanism according to claim 2, wherein: The connecting device (3) includes a connecting screw (3-1) and a driving key (3-2), a threaded hole is formed in the output shaft of the driving motor (1), a light hole is formed in one end of the lead screw (5) adjacent to the driving motor (1), the connecting screw (3-1) is located in the threaded hole and the light hole, a first key groove is formed in the output shaft of the driving motor (1), a wheel hub key groove one is formed on the lead screw (5) outside the first key groove, and the driving key (3-2) is located in the first key groove and the wheel hub key groove one.

4. The electric plug-in flexible locking mechanism according to claim 1, wherein: The locking buffer device (10) includes a lock pin cover (10-1) arranged at one end of the lock pin (6), and the lock pin cover (10-1) is connected with a buffer cover (10-3) through a spring group two (10-2).

5. The electric plug-in flexible locking mechanism according to claim 1, wherein: The outer shell (4) is provided with a limiting device (2), the limiting device (2) includes two limiting switch protection covers (2-1) arranged at the top of the outer shell (4), the limiting switch protection cover (2-1) is provided with a limiting switch (2-2) extending into the outer shell (4), and the limiting switch (2-2) is electrically connected with the driving motor (1).

6. The electric plug-in flexible locking mechanism according to claim 5, wherein: A second key groove is formed in the lock pin (6), a wheel hub key groove two is formed on one side of the second key groove of the outer shell (4), and a guide key (2-3) is arranged in the second key groove and the wheel hub key groove two.

7. The electric plug-in flexible locking mechanism according to claim 6, wherein: The driving motor (1) is provided with a control module, the control module is electrically connected with the driving motor (1) and the limiting switch (2-2), the limiting switch (2-2) is used for detecting whether there is an object within a certain distance of the lower end face, the lock pin (6) moves backward, when the distance between the upper plane of the guide key (2-3) and the lower plane of the adjacent limiting switch (2-2) is less than a specified distance, the limiting switch (2-2) sends a signal to the control module, the control module controls the driving motor (1) to stop rotating, at this time, the lock pin (6) cannot move backward, and the lock pin (6) moves forward, when the distance between the upper plane of the guide key (2-3) and the lower plane of the adjacent limiting switch (2-2) is less than a specified distance, the limiting switch (2-2) sends a signal to the control module, the control module controls the driving motor (1) to stop rotating, at this time, the lock pin (6) cannot move forward.

8. The electric plug-in flexible locking mechanism according to claim 1, wherein: The outer shell (4) is provided with a supporting device (7), the supporting device (7) includes a guide ring (7-1) and a supporting ring (7-2), a guide groove is formed in the bottom of the lock pin (6), the guide ring (7-1) is arranged in the guide groove and is in sliding fit with the inner wall of the outer shell (4), and the supporting ring (7-2) is installed at one end of the lead screw (5) through a fixing screw and is in sliding fit with the inner wall of the lock pin (6).

9. The electric plug-in flexible locking mechanism according to claim 8, wherein: The inner hole diameter of the supporting ring (7-2) is consistent with the diameter of the stepped shaft of the lead screw (5), the outer surface of the supporting ring (7-2) is spherical, and the supporting ring (7-2) is in point contact with the lock pin (6).

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