plug-in device

Abstract

The application discloses a plug-in device, which belongs to the technical field of power distribution equipment testing and comprises an interface unit and a plug-in unit. The interface unit comprises a shell and an inner core, an open plug-in cavity is arranged in the shell, the inner core is arranged at the closed end of the plug-in cavity, and a plug-in hole is arranged on the inner core; the plug-in unit comprises a plug, a plug-in column is arranged on the plug, and the plug can be inserted into the plug-in cavity so that the plug-in column is inserted into the plug-in hole. When the plug-in unit is plugged with the interface unit, the plug is located in the plug-in cavity, the plug-in column is plugged with the plug-in hole in the plug-in cavity, so that the plug is not corroded by dust or sewage and other impurities in the external environment at all times, the plug is plugged with the inner core well, and the accuracy of the final test result is ensured.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment testing technology, and in particular to a plug-in device. Background Technology

[0002] Distribution terminals, also known as distribution automation terminals, are a general term for various remote monitoring and control units installed in the distribution network. They enable the collection, transmission, control, and monitoring of data information of distribution network lines, as well as the automatic location and isolation of faults and the restoration of power supply to non-faulty areas.

[0003] To ensure the normal operation of the power distribution terminal, it is necessary to test it regularly. Currently, power distribution terminal testing is generally conducted under energized and online conditions. Testing typically involves inserting a connector into the power distribution terminal.

[0004] However, existing connectors are generally plug-and-play connectors. After being plugged into the power distribution terminal, the connector is always exposed. After long-term use, the connector may be corroded due to external environmental factors (such as water vapor or dust), resulting in poor contact between the connector and the power distribution terminal, which affects the final test results. Summary of the Invention

[0005] The purpose of this invention is to provide a plug-in device to solve the technical problem in the prior art where, after prolonged use, the connector plug becomes corroded due to external environmental factors, leading to poor contact between the connector plug and the power distribution terminal.

[0006] Based on the above concept, the technical solution adopted by this invention is as follows:

[0007] The plug-in device includes:

[0008] An interface unit includes a housing and an inner core. The housing has a plug-in cavity with an opening at one end, and the inner core is located at the closed end of the plug-in cavity. The inner core has a plug-in hole.

[0009] An insertion unit includes a plug with a pin on it, the plug being able to be inserted into the insertion cavity and the pin being able to be inserted into the insertion hole.

[0010] As a preferred embodiment of the above-mentioned plug-in device, the inner core is movably disposed at the closed end of the plug-in cavity. The plug-in device further includes a slider, which has a through cavity with openings at both ends. The slider is slidably disposed within the plug-in cavity. The plug can be inserted into the through cavity and drive the slider to move toward the inner core. The slider is provided with a first rack extending toward the inner core, and the inner core is provided with a second rack extending toward the slider. The inner wall of the plug-in cavity is rotatably provided with a gear. The second rack is always meshed with the gear, and the first rack is always meshed with the gear.

[0011] As a preferred embodiment of the above-mentioned plug-in device, the inner wall of the plug-in cavity is provided with a gear mounting bracket, the gear is rotatably mounted on the gear mounting bracket, the gear mounting bracket is provided with a movable guide post extending toward the slider, the slider is provided with a guide hole that slides into the movable guide post, and a first elastic member is sleeved on the movable guide post, one end of the first elastic member elastically abutting against the gear mounting bracket, and the other end elastically abutting against the slider.

[0012] As a preferred embodiment of the above-mentioned plug-in device, the plug-in device further includes a locking mechanism, the locking mechanism comprising:

[0013] The slider has a through cavity with openings at both ends. The slider is slidably disposed in the insertion cavity. The plug can be inserted into the through cavity and drive the slider to move toward the inner core.

[0014] The linkage component has a sandwich cavity on the outer shell that communicates with the insertion cavity. The linkage component is movably disposed in the sandwich cavity. When the slider moves toward the inner core, it can drive the linkage component to move. When the insertion post is inserted into the insertion hole, the linkage component locks with the plug.

[0015] As a preferred embodiment of the above-mentioned plug-in device, the linkage component includes:

[0016] A lever is rotatably disposed inside the outer shell, with its first end located inside the insertion cavity and its second end located inside the interlayer cavity. The slider can move to abut against the first end and push the lever to rotate.

[0017] A linkage plate is movably disposed within the interlayer cavity. One end of the linkage plate is hinged to the second end of the lever block, and the other end extends away from the inner core. A first inclined surface is provided at the other end of the linkage plate.

[0018] A first locking member is provided with a second inclined surface that abuts against and cooperates with the first inclined surface. The first locking member is installed in the interlayer cavity and can be pushed out of the interlayer cavity by the first inclined surface and locked with the plug to restrict the plug from moving along its own insertion and removal direction.

[0019] As a preferred embodiment of the above-mentioned plug-in device, a second elastic member is connected between the first locking member and the inner wall of the interlayer cavity, and the second elastic member is configured to always have a tendency to pull the first locking member back into the interlayer cavity.

[0020] As a preferred embodiment of the above-mentioned plug-in device, the linkage component further includes a second locking member. The second locking member is elastically disposed on the first locking member. When the first locking member is engaged and locked with the plug, the second locking member can elastically extend out relative to the first locking member and extend into the plug to restrict the plug from moving in a direction perpendicular to its own insertion and removal direction.

[0021] As a preferred embodiment of the above-mentioned plug-in device, the plug is provided with a locking groove that engages with the first locking member, and the side wall of the locking groove is provided with a locking hole that engages with the second locking member.

[0022] As a preferred embodiment of the above-mentioned plug-in device, the plug-in device further includes an unlocking component, which includes an unlocking member elastically disposed on the insertion unit, and the unlocking member is capable of pushing the second locking member in the locking hole back to the first locking member.

[0023] As a preferred embodiment of the above-mentioned insertion device, a sealing plate assembly is rotatably provided at the end of the through cavity away from the inner core. When the insertion unit is not inserted, the sealing plate assembly blocks the opening at the end of the through cavity away from the inner core. When the insertion unit is inserted, it can push open the sealing plate assembly.

[0024] The beneficial effects of this invention are:

[0025] In practical applications, the plug-in device proposed in this invention has an interface unit mounted on the power distribution terminal, which is part of the terminal. An insertion unit is mounted on the execution end of the testing mechanism. When testing the power distribution terminal, the insertion unit is inserted into the interface unit. The plug-in device formed by these two components can complete the testing of the power distribution terminal. Because the housing has a plug-in cavity with an open end, and the inner core is fixedly mounted at the closed end of the cavity, when the insertion unit and interface unit are plugged in, the plug is located inside the cavity, and the plug pin is inserted into the plug hole within the cavity. This prevents the plug from being corroded by dust, sewage, or other impurities from the external environment, ensuring a good connection between the plug and the inner core, thereby guaranteeing the accuracy of the final test results. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the insertion unit initially inserting into the interface unit in the plug-in device provided in the embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram from one perspective of the interface unit provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the interface unit provided in another embodiment of the present invention;

[0030] Figure 4 yes Figure 3 Partial structural diagram;

[0031] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0033] Figure 7 This is a schematic diagram of the internal structure of the slider provided in an embodiment of the present invention;

[0034] Figure 8 This is a partial structural schematic diagram of the insertion unit provided in an embodiment of the present invention;

[0035] Figure 9 yes Figure 8 Enlarged view of point C in the middle;

[0036] Figure 10 This is a schematic diagram of the internal structure of the interface unit provided in another embodiment of the present invention;

[0037] Figure 11 This is a schematic diagram showing the relative positions of the two first locking members and the two third locking members provided in an embodiment of the present invention;

[0038] Figure 12 This is a schematic diagram of the first locking member provided in an embodiment of the present invention;

[0039] Figure 13 This is a schematic diagram of the third locking member provided in an embodiment of the present invention.

[0040] In the picture:

[0041] 1. Interface unit; 11. Housing; 111. Insertion cavity; 112. Gear; 113. Gear mounting bracket; 1131. Moving guide post; 1132. First elastic element; 114. Interlayer cavity; 115. First ejection groove; 116. Second ejection groove; 117. Third locking element; 1171. Second fitting slope; 12. Inner core; 121. Insertion hole; 122. Second rack;

[0042] 2. Insertion unit; 21. Plug; 211. Plug post; 212. Locking groove; 213. Locking hole; 214. Clearance notch; 22. Support block; 221. Unlocking component receiving cavity; 222. Fourth elastic element guide post;

[0043] 3. Slider; 31. Through cavity; 311. Groove; 312. Abutting flange; 32. First rack; 33. Pulley mating groove;

[0044] 4. Linkage assembly; 41. Toggle block; 42. Linkage plate; 421. First plate; 422. Second plate; 4221. First inclined surface; 423. Sixth elastic element; 43. First locking element; 431. Second inclined surface; 432. Second locking element receiving groove; 433. Fifth elastic element; 434. Fifth elastic element guide post; 435. Push block structure; 4351. Receiving empty groove; 44. Second locking element;

[0045] 5. Unlocking component; 51. Unlocking piece; 511. Third inclined plane; 52. Fourth elastic piece;

[0046] 6. Sealing plate assembly; 61. Sealing plate; 62. Third elastic element. Detailed Implementation

[0047] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0048] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0050] Example 1

[0051] See Figure 1 , Figure 2 , Figure 3 and Figure 8 This embodiment provides a plug-in device.

[0052] Specifically, the plug-in device includes an interface unit 1 and an insertion unit 2.

[0053] The interface unit 1 includes a housing 11 and an inner core 12. The housing 11 has a plug-in cavity 111 with an opening at one end. The inner core 12 is located at the closed end of the plug-in cavity 111 and has a plug-in hole 121.

[0054] The insertion unit 2 includes a plug 21, on which a plug post 211 is provided. The plug 21 can be inserted into the plug cavity 111 and the plug post 211 can be inserted into the plug hole 121.

[0055] Interface unit 1 and insertion unit 2 are installed as supporting equipment at the interfaces of the power distribution test equipment that require power.

[0056] Specifically, in practical applications, interface unit 1 is installed on the power distribution terminal and is part of the power distribution terminal; insertion unit 2 is installed at the execution end of the testing mechanism. When testing the power distribution terminal, insertion unit 2 is inserted into interface unit 1, and the plug-in device formed by the two can complete the testing of the power distribution terminal. Since the housing 11 has a plug cavity 111 with an open end, and the inner core 12 is fixedly installed at the closed end of the plug cavity 111, when the insertion unit 2 is plugged into the interface unit 1, the plug 21 is located in the plug cavity 111, and the plug post 211 is plugged into the plug hole 121 in the plug cavity 111. The housing 11 wraps and protects the plug 21, so that the plug 21 will never be corroded by dust or sewage from the external environment, ensuring that the plug 21 and the inner core 12 are properly plugged in, thereby ensuring the accuracy of the final test results.

[0057] Furthermore, in this embodiment, the insertion unit 2 also includes a support block 22, which is integrally formed and connected with the plug 21, making it convenient for the operator to operate the insertion unit 2. In use, the operator holds the support block 22 and aligns the plug 21 with the insertion cavity 111, so that the plug 21 is inserted into the insertion cavity 111 until the insertion post 211 is inserted into the insertion hole 121.

[0058] In this embodiment, after the plug-in device is inserted into place, the plug 21 is located in the plug cavity 111, and the plug post 211 is inserted into the plug hole 121 in the plug cavity 111, so that the plug 21 will never be corroded by dust or sewage and other impurities in the external environment. That is, the space where the plug 21 and the inner core 12 are located is completely isolated from the outside world, avoiding interface corrosion.

[0059] Preferably, in this embodiment, the outer shell 11 is made of plastic, which is low in cost, lightweight, has good insulation, wear resistance and corrosion resistance. The inner core 12, plug 21 and support block 22 are all wrapped with rubber sleeves, which can effectively waterproof them.

[0060] Example 2

[0061] This embodiment provides a plug-in device, which is a further improvement on the plug-in device in Embodiment 1.

[0062] Specifically, see Figures 1-4 , Figure 8 and Figure 9 In this embodiment, the inner core 12 is movably disposed at the closed end of the insertion cavity 111.

[0063] The insertion device also includes a slider 3, which has a through cavity 31 with openings at both ends. The slider 3 is slidably disposed in the insertion cavity 111. The plug 21 can be inserted into the through cavity 31 and drive the slider 3 to move toward the inner core 12. The slider 3 is provided with a first rack 32 extending toward the inner core 12, and the inner core 12 is provided with a second rack 122 extending toward the slider 3. The inner wall of the insertion cavity 111 is rotatably provided with a gear 112. The second rack 122 is always meshed with the gear 112, and the first rack 32 is always meshed with the gear 112.

[0064] By setting up gear 112, first rack 32 and second rack 122, when the first rack 32 moves in a straight line, the first rack 32 drives gear 112 to rotate around its own axis; the gear 112 rotating around its own axis can drive the second rack 122 meshing with gear 112 to move toward slider 3. At this time, plug 21 and inner core 12 move toward each other, so that plug 21 can be quickly inserted into inner core 12.

[0065] At the same time, gear 112 meshes with first rack 32 and second rack 122, which can achieve a locking effect and ensure that plug 21 can be securely inserted into inner core 12.

[0066] Furthermore, in this embodiment, a gear mounting bracket 113 is provided on the inner wall of the insertion cavity 111, and the gear 112 is rotatably mounted on the gear mounting bracket 113. A movable guide post 1131 extending toward the slider 3 is provided on the gear mounting bracket 113, and a guide hole is provided on the slider 3 for sliding insertion with the movable guide post 1131. A first elastic member 1132 is sleeved on the movable guide post 1131, and one end of the first elastic member 1132 elastically abuts against the gear mounting bracket 113, and the other end elastically abuts against the slider 3.

[0067] When the plug 21 is inserted into the through cavity 31 and moves the slider 3 toward the inner core 12, the slider 3 moves toward the gear mounting bracket 113, the moving guide post 1131 is inserted into the guide hole, the first elastic element 1132 is compressed and stores elastic potential energy; when it is necessary to pull out the plug 21, the compressed first elastic element 1132 can apply a force away from the inner core 12 to the plug 21, so that the plug 21 can be pulled out quickly.

[0068] More preferably, a sealing plate assembly 6 is rotatably provided at the end of the through cavity 31 away from the inner core 12. When the insertion unit 2 is not inserted, the sealing plate assembly 6 blocks the opening at the end of the through cavity 31 away from the inner core 12. When the insertion unit 2 is inserted, the sealing plate assembly 6 can be pushed open.

[0069] Specifically, the sealing plate assembly 6 includes a sealing plate 61 and a third elastic member 62. One end of the sealing plate 61 is hinged to the end of the through cavity 31 away from the inner core 12, and the other end of the sealing plate 61 is connected to the end of the through cavity 31 away from the inner core 12 by the third elastic member 62.

[0070] Specifically, one end of the third elastic element 62 is fixedly connected to the inner wall of the through cavity 31, and the other end is connected to the free end of the sealing plate 61.

[0071] In its free state, the sealing plate 61 blocks the opening of the through cavity 31 away from the inner core 12. When the plug 21 of the insertion unit 2 is inserted into the through cavity 31, the plug 21 can push the sealing plate 61 to rotate relative to the slider 3, thereby pushing the sealing plate 61 open. At the same time, the third elastic element 62 is stretched and stores elastic potential energy.

[0072] Preferably, see Figure 2 , Figure 4 and Figure 7 In this embodiment, two sealing plate assemblies 6 are provided. The two sealing plate assemblies 6 are located on both sides of the end of the through cavity 31 away from the inner core 12, forming a double door structure. With this configuration, the length of each sealing plate 61 only needs to be half the opening size of the through cavity 31, which makes it easy for the plug 21 to quickly push open the two sealing plates 61.

[0073] When the plug 21 is pulled out, under the elastic restoring force of the two third elastic elements 62, the two sealing plates 61 automatically reset to the state of closing the opening of the through cavity 31, preventing external dust from entering the through cavity 31.

[0074] Specifically, see Figure 7 The bottom and top walls of the through cavity 31 of the slider 3 are provided with grooves 311 that cooperate with the sealing plate 61. The length of the grooves 311 is greater than the length of the sealing plate 61. The grooves 311 are provided to ensure the normal opening and closing of the sealing plate 61. On the other hand, when the sealing plate 61 is in the closed state, the front side of the sealing plate 61 abuts against the front side of the grooves 311 to ensure the dustproof effect.

[0075] Preferably, in order to ensure that the front side of the sealing plate 61 abuts against the front side of the groove 311, a third elastic element receiving groove (not shown in the figure) is provided in the slider 3 to cooperate with the third elastic element 62. The opening of the third elastic element receiving groove is located on the front side of the groove 311, and one end of the third elastic element 62 is fixedly connected to the third elastic element receiving groove. When the sealing plate 61 is in the closed state, the third elastic element 62 is completely accommodated in the third elastic element receiving groove.

[0076] See Figure 7In order for the plug 21 to be able to move the slider 3 after it is fully inserted into the through cavity 31, an abutment flange 312 is provided at the opening of the through cavity 31 near the inner core 12, which abuts against the plug 21. Accordingly, see Figure 8 A clearance notch 214 is provided at the free end of the plug 21 to cooperate with the abutment flange 312. The clearance notch 214 makes the free end of the plug 21 form an abutment surface, which abuts against the abutment flange 312, thereby enabling the plug 21 to drive the slider 3 to move.

[0077] For example, the process of inserting interface unit 1 into insertion unit 2 is as follows:

[0078] The operator holds the support block 22 and inserts the plug 21 into the through cavity 31. As the plug 21 enters the opening of the through cavity 31, it pushes open the two sealing plates 61. After the plug 21 is fully inserted into the through cavity 31, the contact surface abuts against the contact flange 312. The plug 21 drives the slider 3 to move toward the inner core 12. The slider 3 moves toward the inner core 12 in the insertion cavity 111. The first rack 32 moves linearly and drives the gear 112 to rotate. The gear 112 drives the second rack 122 to move toward the slider 3. The plug 21 and the inner core 12 move toward each other, so that the plug 21 can be quickly and securely inserted into the inner core 12. During this process, the moving guide post 1131 is inserted into the guide hole, and the first elastic element 1132 is compressed and stores elastic potential energy.

[0079] After the insertion unit 2 is pulled out of the interface unit 1, under the elastic recovery action of the first elastic element 1132, the slider 3 can move in the opposite direction to the initial position. Under the reverse rotation of the gear 112, the second rack 122 moves away from the slider 3, thereby causing the inner core 12 to move to the initial position. Under the elastic recovery force of the third elastic element 62, the sealing plate 61 automatically resets to the state of closing the opening of the through cavity 31, which plays a role in preventing dust and dirt.

[0080] In this embodiment, both the outer shell 11 and the slider 3 are made of plastic.

[0081] The outer shell 11 completely encloses the inner core 12, slider 3 and plug 21. After the plug-in device is plugged in, it isolates the inner core 12 and plug 21 from the external space, greatly reducing the risk of corrosion at the interface. Since both the outer shell 11 and the support block 22 are covered with insulating material, there is no possibility of electric arc at the interface, which could cause electric shock to the operator, thus ensuring the safety of the test.

[0082] Example 3

[0083] This embodiment provides a plug-in device, which is a further improvement on the plug-in device in Embodiment 2.

[0084] Specifically, see Figures 3-6 To ensure that the plug 211 can be stably inserted into the plug hole 121 when the plug 21 is inserted into the plug cavity 111, and to prevent the plug 211 from being loosely inserted, which could affect the accuracy of the test results, this embodiment of the plug-in device also includes a locking mechanism. That is, the locking mechanism ensures that the plug-in unit 2 and the interface unit 1 remain firmly connected after prolonged or repeated use, preventing loosening from affecting the test results.

[0085] Furthermore, the locking mechanism ensures a stable connection between the insertion unit 2 and the interface unit 1, preventing arcing due to poor contact and thus avoiding potential safety hazards. Ultimately, it eliminates the possibility of electric shock to operators and ensures the safety of the test.

[0086] Specifically, the locking mechanism includes a slider 3 and a linkage component 4.

[0087] The outer shell 11 is provided with a sandwich cavity 114 that communicates with the insertion cavity 111. The linkage component 4 is movably disposed in the sandwich cavity 114. When the slider 3 moves toward the inner core 12, it can drive the linkage component 4 to move. When the insertion post 211 is inserted into the insertion hole 121, the linkage component 4 and the plug 21 are locked together.

[0088] When the plug 21 is fully inserted into the through cavity 31, the plug 21 drives the slider 3 to move toward the inner core 12. The slider 3 drives the linkage component 4 to operate. When the plug pin 211 is inserted into the plug hole 121, the linkage component 4 locks with the plug 21, thereby preventing the plug 21 from coming off.

[0089] Specifically, in this embodiment, the linkage component 4 includes a toggle block 41, a linkage plate 42, and a first locking member 43.

[0090] The lever 41 is rotatably disposed inside the outer shell 11. The first end of the lever 41 is located in the insertion cavity 111, and the second end of the lever 41 is located in the interlayer cavity 114. The slider 3 can move to abut against the first end of the lever 41 and push the lever 41 to rotate.

[0091] The linkage plate 42 is movably disposed in the interlayer cavity 114. One end of the linkage plate 42 is hinged to the second end of the lever block 41, and the other end extends in a direction away from the inner core 12. The other end of the linkage plate 42 is provided with a first inclined surface 4221.

[0092] The first locking member 43 is provided with a second inclined surface 431 that abuts against the first inclined surface 4221. The first locking member 43 is installed in the interlayer cavity 114 and can be pushed by the first inclined surface 4221 to disengage from the interlayer cavity 114 and engage with the plug 21 to lock it in order to restrict the plug 21 from moving along its own insertion and removal direction.

[0093] Specifically, the two ends of the interlayer cavity 114 are provided with a connecting hole and a first pop-out groove 115 that communicate with the insertion cavity 111. The toggle block 41 is rotatably disposed in the connecting hole. The first locking member 43 is located in the first pop-out groove 115 in the initial free state. When the insertion unit 2 is inserted into place, the first locking member 43 can move from the first pop-out groove 115 into the insertion cavity 111 so as to engage and lock with the plug 21.

[0094] In the initial free state, the first locking member 43 is located in the first pop-out slot 115, and the slider 3 provides vertical support for the first locking member 43.

[0095] Specifically, see Figure 7 The outer top wall of the slider 3 is provided with a lever engagement groove 33 that mates with the lever 41. One end of the lever engagement groove 33 is open, and the other end is blind. The depth of the lever engagement groove 33 is the same as the length of the lever 41 extending out of the inner top wall of the slider 3.

[0096] by Figure 4 Taking the orientation shown as an example, after the plug 21 is fully inserted into the through cavity 31, the plug 21 drives the slider 3 to move toward the inner core 12. When the side wall of the blind end of the latching groove 33 moves to the right and abuts against the lower end of the latch 41, the slider 3 can drive the latch 41 to rotate. The other end of the latch 41 connected to the linkage plate 42 drives the linkage plate 42 to move to the left along the interlayer cavity 114. At this time, the slider 3 moves to the right to make room for the lower opening of the first pop-out groove 115. The first locking member 43 is pushed by the first inclined surface 4221 to disengage from the interlayer cavity 114 and pops out from the lower opening of the first pop-out groove 115. Then it engages with the plug 21 to lock it in order to restrict the plug 21 from moving along its own insertion and removal direction.

[0097] Specifically, the first pop-out slot 115 can restrict the first locking member 43 to move only in the vertical direction.

[0098] Furthermore, in order to enable the linkage plate 42 to automatically reset after the insertion unit 2 is pulled out, the linkage plate 42 includes an integrally formed first plate 421 and second plate 422. A first inclined surface 4221 is provided at the free end of the second plate 422. The thickness of the first plate 421 is basically the same as the thickness of the interlayer cavity 114, and the thickness of the second plate 422 is less than the thickness of the first plate 421. A sixth elastic member 423 is sleeved on the second plate 422. A second plate limiting hole that slides with the second plate 422 is provided at one end of the interlayer cavity 114 near the first ejection groove 115, so that the inner wall of the interlayer cavity 114 forms a sixth elastic member abutting surface that abuts against one end of the sixth elastic member 423. The other end of the sixth elastic member 423 abuts against the first plate 421.

[0099] After the plug 21 is fully inserted into the through cavity 31, when the other end of the lever 41 connected to the linkage plate 42 drives the linkage plate 42 to move to the left along the interlayer cavity 114, the sixth elastic element 423 is compressed and stores elastic potential energy. When the insertion unit 2 is pulled out, under the action of the elastic restoring force of the sixth elastic element 423, the linkage plate 42 can move to the right and reset to the initial free state. At this time, the lever 41 also rotates and resets to the initial free state.

[0100] Furthermore, a second elastic member (not shown in the figure) is connected between the first locking member 43 and the inner wall of the interlayer cavity 114. The second elastic member is configured to always have a tendency to pull the first locking member 43 back into the interlayer cavity 114. The second elastic member is stretched when the first locking member 43 is engaged and locked with the plug 21.

[0101] Optionally, the second elastic element is a spring.

[0102] When the locking state between the first locking member 43 and the plug 21 is released, the first locking member 43 can be reset to its initial position under the elastic restoring force of the second elastic member.

[0103] Furthermore, the linkage component 4 also includes a second locking member 44, which is elastically disposed on the first locking member 43. When the first locking member 43 is engaged and locked with the plug 21, the second locking member 44 can elastically extend out relative to the first locking member 43 and extend into the plug 21 to restrict the plug 21 from moving in a direction perpendicular to its own insertion and removal direction.

[0104] Specifically, see Figure 5 and Figure 7 The first locking member 43 is provided with a second locking member receiving groove 432, and a fifth elastic member 433 that cooperates with the second locking member 44 is provided in the second locking member receiving groove 432. The fifth elastic member 433 is configured to always have a tendency to drive the first locking member 43 to pop out.

[0105] The second locking member receiving groove 432 is provided with a fifth elastic member guide post 434, and the second locking member 44 is provided with a first clearance cavity. One end of the fifth elastic member 433 is sleeved on the fifth elastic member guide post 434, and the other end elastically abuts against the top wall of the first clearance cavity.

[0106] Further, see Figure 8 and Figure 9 The plug 21 is provided with a locking groove 212 that engages with the first locking member 43, and a locking hole 213 is provided on the side wall of the locking groove 212 that engages with the second locking member 44. The second locking member 44 extends into the locking hole 213, thereby restricting the plug 21 from moving in a direction perpendicular to its own insertion and removal direction.

[0107] Furthermore, the insertion device also includes an unlocking component 5 to release the locking state between the insertion unit 2 and the interface unit 1, thereby enabling the insertion unit 2 to be pulled out.

[0108] Specifically, the unlocking component 5 includes an unlocking member 51 elastically disposed on the insertion unit 2, which can push the second locking member 44 in the locking hole 213 back to the first locking member 43.

[0109] Specifically, see Figure 9 In this embodiment, the unlocking component 5 includes an unlocking member 51 and a fourth elastic member 52. The insertion unit 2 is provided with an unlocking component receiving cavity 221. The unlocking component receiving cavity 221 is provided with a fourth elastic member guide post 222. The lower end of the unlocking member 51 is provided with a second clearance cavity. The lower end of the fourth elastic member 52 is sleeved on the fourth elastic member guide post 222. The lower end of the fourth elastic member 52 elastically abuts against the top wall of the second clearance cavity. The lower end of the unlocking member 51 is always located in the unlocking component receiving cavity 221. The lower end of the unlocking member 51 protrudes relative to the insertion unit 2 in the free state.

[0110] Specifically, in this embodiment, the unlocking component receiving cavity 221 is disposed on the support block 22, which facilitates the operator to operate the unlocking component 5. The lower end of the unlocking member 51 has a third inclined surface 511 cut on the side facing the locking hole 213, and one end of the second locking member 44 facing the locking hole 213 has a tapered structure, the tip of which can abut against the third inclined surface 511.

[0111] When the second locking member 44 can elastically extend relative to the first locking member 43 and extend into the locking hole 213 of the plug 21, the tip of the conical structure abuts against the third inclined surface 511.

[0112] When it is necessary to pull out the insertion unit 2, the operator presses down on the unlocking member 51. As the unlocking member 51 moves downward, the tip of the conical structure is gradually pushed out of the locking hole 213 by the third inclined surface 511. Finally, the tip of the conical structure is completely pushed out of the locking hole 213 by the side of the unlocking member 51 and returns to the second locking member receiving groove 432 of the first locking member 43. At this time, under the elastic recovery action of the second elastic member, the first locking member 43 can be reset to the initial position, so that the insertion unit 2 can be pulled out smoothly.

[0113] When insertion unit 2 is not inserted into interface unit 1, the locking mechanism is in an initial free state. In the initial free state, as... Figures 3-6 As shown, slider 3 is also in its initial state, and the first locking member 43 is located in the interlayer cavity 114 and is supported by slider 3.

[0114] When the insertion unit 2 begins to insert into the interface unit 1, the operator holds the support block 22 and inserts the plug 21 into the through cavity 31. As the plug 21 enters the opening of the through cavity 31, it pushes open the two sealing plates 61. After the plug 21 is fully inserted into the through cavity 31, the plug 21 drives the slider 3 to move toward the inner core 12. The slider 3 moves toward the inner core 12 in the insertion cavity 111. The first rack 32 moves linearly and drives the gear 112 to rotate. The gear 112 drives the second rack 122 to move toward the slider 3. The plug 21 and the inner core 12 move toward each other, so that the plug 21 can be quickly and securely inserted into the inner core 12. During this process, the moving guide post 1131 is inserted into the guide hole, and the first elastic element 1132 is compressed and stores elastic potential energy.

[0115] At the same time, with Figure 3 and Figure 4 Taking the orientation shown as an example, when the plug 21 drives the slider 3 to move toward the inner core 12, the side wall of the blind end of the latch 33 moves to abut against the lower end of the latch 41. Then, as the slider 3 moves to the right toward the inner core 12, it drives the latch 41 to rotate. The latch 41 drives the linkage plate 42 to move to the left. At the same time, the slider 3 moves to a position deviating from the initial position to release the vertical restriction on the first locking member 43. The first locking member 43 pops out downward under the action of the second elastic member. The first locking member 43 is pushed by the first inclined surface 4221 to disengage from the interlayer cavity 114 and lock with the plug 21 to restrict the plug 21 from moving along its own insertion and removal direction. After the first locking member 43 is locked with the plug 21, under the elastic action of the fifth elastic member 433, the second locking member 44 pops out and extends into the locking hole 213, thereby restricting the plug 21 from moving in a direction perpendicular to its own insertion and removal direction.

[0116] When it is necessary to remove the insertion unit 2, the operator presses down on the unlocking member 51. As the unlocking member 51 moves downward, the tip of the conical structure is gradually pushed out of the locking hole 213 by the third inclined surface 511. Finally, the tip of the conical structure is completely pushed out of the locking hole 213 by the side of the unlocking member 51. At this time, under the elastic recovery action of the second elastic member, the first locking member 43 can be reset to the initial position, so that the insertion unit 2 can be smoothly removed.

[0117] At the same time, when the first locking member 43 is reset to the initial position, with the cooperation of the second inclined surface 431 and the first inclined surface 4221, and under the elastic restoring force of the sixth elastic member 423, the linkage plate 42 can move to the right and reset to the initial free state, and the toggle block 41 also rotates to the initial state.

[0118] Preferably, in this embodiment, two sets of linkage components 4 are provided, and the two sets of linkage components 4 are located at the upper part and the bottom of the outer shell 11, respectively; correspondingly, a sandwich cavity 114 is provided on the top plate and the bottom plate of the outer shell 11, and a locking groove 212 is provided on the upper surface and the lower surface of the plug 21.

[0119] It is understandable that the movements of the two linked components 4 are always synchronized.

[0120] Example 4

[0121] This embodiment provides a plug-in device, which is a further improvement on the plug-in device in Embodiment 3.

[0122] Specifically, see Figures 10-13 In this embodiment, the inner walls of the two oppositely arranged side plates of the outer shell 11 are each provided with a second pop-out groove 116. Each second pop-out groove 116 is provided with a third locking member 117. Adjacent first pop-out grooves 115 and second pop-out grooves 116 are connected. One first pop-out groove 115, one second pop-out groove 116, another first pop-out groove 115, and another second pop-out groove 116 are connected end to end to form a quadrilateral annular cavity. Correspondingly, one first locking member 43, one third locking member 117, another first locking member 43, and another third locking member 117 are connected end to end to form a square frame structure, such as... Figure 11 As shown.

[0123] A seventh elastic element (not shown in the figure) is connected between the third locking member 117 and the second pop-out groove 116. The seventh elastic element always has a tendency to pull the third locking member 117 back into the second pop-out groove 116.

[0124] Optionally, the seventh elastic element is a spring.

[0125] Both ends of the first locking member 43 are provided with push block structures 435. The push block structures 435 are hook-shaped and are provided with receiving slots 4351 that cooperate with the third locking member 117. The side wall of the receiving slots 4351 is provided with a first fitting slope that can fit against the surface of the third locking member 117. Correspondingly, the third locking member 117 is provided with a second fitting slope 1171 that cooperates with the first fitting slope.

[0126] When the first locking member 43 pops out of the first pop-out slot 115, the push block structure 435 can push the third locking member 117 out of the second pop-out slot 116 and make the third locking member 117 abut against the side wall of the plug 21.

[0127] In the initial free state, such as Figure 10 and Figure 11As shown, the end of the third locking member 117 is located outside the receiving slot 4351, and the side of the third locking member 117 is in contact with the inner side of the receiving slot 4351. When the upper first locking member 43 moves down to engage with the locking slot 212 above the plug 21, the lower first locking member 43 moves up to engage with the locking slot 212 below the plug 21. Under the action of the four push block structures 435, the two third locking members 117 are simultaneously ejected from the two second pop-out slots 116 to clamp the plug 21 (during this process, the seventh elastic member is stretched and stores elastic potential energy, and the third locking member 117 moves synchronously with the first locking member 43). The free end of each third locking member 117 also moves and engages with its corresponding receiving slot 4351. At this time, the size of the square structure formed by the sequential connection of one first locking member 43, one third locking member 117, another first locking member 43, and another third locking member 117 becomes smaller, thus stably locking the plug 21.

[0128] When unlocked, the two first locking members 43 reset, and under the elastic restoring force of the two seventh elastic members, the two third locking members 117 retract into their respective second pop-out slots 116.

[0129] Example 5

[0130] This embodiment provides a plug-in device, which is a further improvement on the plug-in device in Embodiment 1.

[0131] Specifically, in this embodiment, the plug-in device also includes a locking mechanism, which can ensure that the plug-in unit 2 and the interface unit 1 are stably plugged in, and avoid the generation of electric arc due to poor contact, which could lead to safety hazards.

[0132] The locking mechanism includes a slider 3 and a linkage component 4.

[0133] The slider 3 is provided with a through cavity 31 with openings at both ends. The slider 3 can be slidably disposed in the insertion cavity 111. The plug 21 can be inserted into the through cavity 31 and drive the slider 3 to move toward the inner core 12.

[0134] The outer shell 11 is provided with a sandwich cavity 114 that communicates with the insertion cavity 111. The linkage component 4 is movably disposed in the sandwich cavity 114. When the slider 3 moves toward the inner core 12, it can drive the linkage component 4 to move. When the insertion post 211 is inserted into the insertion hole 121, the linkage component 4 and the plug 21 are locked together.

[0135] The linkage component 4 includes a toggle block 41, a linkage plate 42, and a first locking element 43.

[0136] The lever 41 is rotatably disposed inside the outer shell 11, with its first end located in the insertion cavity 111 and its second end located in the interlayer cavity 114. The slider 3 can move to abut against the first end and push the lever 41 to rotate.

[0137] The linkage plate 42 is movably disposed in the interlayer cavity 114. One end of the linkage plate 42 is hinged to the second end of the lever block 41, and the other end extends in a direction away from the inner core 12. The other end of the linkage plate 42 is provided with a first inclined surface 4221.

[0138] The first locking member 43 is provided with a second inclined surface 431 that abuts against the first inclined surface 4221. The first locking member 43 is installed in the interlayer cavity 114 and can be pushed by the first inclined surface 4221 to disengage from the interlayer cavity 114 and engage with the plug 21 to lock it in order to restrict the plug 21 from moving along its own insertion and removal direction.

[0139] Specifically, the two ends of the interlayer cavity 114 are provided with a connecting hole and a first pop-out groove 115 that communicate with the insertion cavity 111. The toggle block 41 is rotatably disposed in the connecting hole. The first locking member 43 is located in the first pop-out groove 115 in the initial free state. When the insertion unit 2 is inserted into place, the first locking member 43 can move from the first pop-out groove 115 into the insertion cavity 111 so as to engage and lock with the plug 21.

[0140] In the initial free state, the first locking member 43 is located in the first pop-out slot 115, and the slider 3 provides vertical support for the first locking member 43.

[0141] Specifically, the outer top wall of the slider 3 is provided with a lever engagement groove 33 that mates with the lever 41. One end of the lever engagement groove 33 is open, and the other end is blind. The depth of the lever engagement groove 33 is the same as the length of the lever 41 extending out relative to the inner top wall of the slider 3.

[0142] by Figure 4 Taking the orientation shown as an example, after the plug 21 is fully inserted into the through cavity 31, the plug 21 drives the slider 3 to move toward the inner core 12. When the side wall of the blind end of the dial block engaging the groove 33 moves to abut against the lower end of the dial block 41, the slider 3 can drive the dial block 41 to rotate. The other end of the dial block 41 connected to the linkage plate 42 drives the linkage plate 42 to move to the left along the interlayer cavity 114. The first locking member 43 is pushed by the first inclined surface 4221 to disengage from the interlayer cavity 114 and lock with the plug 21 to restrict the plug 21 from moving along its own insertion and removal direction.

[0143] Specifically, the first pop-out slot 115 can restrict the first locking member 43 to move only in the vertical direction.

[0144] Furthermore, in order to enable the linkage plate 42 to automatically reset after the insertion unit 2 is pulled out, the linkage plate 42 includes an integrally formed first plate 421 and second plate 422. A first inclined surface 4221 is provided at the free end of the second plate 422. The thickness of the first plate 421 is basically the same as the thickness of the interlayer cavity 114. The thickness of the second plate 422 is less than the thickness of the first plate 421. A sixth elastic member 423 is sleeved on the second plate 422. A second plate limiting hole that slides with the second plate 422 is provided at one end of the interlayer cavity 114 near the first ejection groove 115, so that the inner wall of the interlayer cavity 114 forms an abutment surface that abuts against one end of the sixth elastic member 423. The other end of the sixth elastic member 423 abuts against the first plate 421.

[0145] When the other end of the lever 41, which is connected to the linkage plate 42, moves the linkage plate 42 to the left along the interlayer cavity 114, the sixth elastic element 423 is compressed and stores elastic potential energy. When the insertion unit 2 is pulled out, under the action of the elastic restoring force of the sixth elastic element 423, the linkage plate 42 can move to the right and reset to its initial free state.

[0146] Furthermore, a second elastic element (not shown in the figure) is connected between the first locking member 43 and the inner wall of the interlayer cavity 114. When the first locking member 43 is locked with the plug 21, the second elastic element is stretched.

[0147] Optionally, the second elastic element is a spring.

[0148] When the locking state between the first locking member 43 and the plug 21 is released, the first locking member 43 can be reset to its initial position under the elastic recovery action of the second elastic member.

[0149] Furthermore, the linkage component 4 also includes a second locking member 44, which is elastically disposed on the first locking member 43. When the first locking member 43 is engaged and locked with the plug 21, the second locking member 44 can elastically extend out relative to the first locking member 43 and extend into the plug 21 to restrict the plug 21 from moving in a direction perpendicular to its own insertion and removal direction.

[0150] Specifically, see Figure 5 and Figure 7 The first locking member 43 is provided with a second locking member receiving groove 432, and a fifth elastic member 433 that cooperates with the second locking member 44 is provided in the second locking member receiving groove 432. The fifth elastic member 433 is configured to always have a tendency to drive the first locking member 43 to pop out.

[0151] The second locking member receiving groove 432 is provided with a fifth elastic member guide post 434, and the second locking member 44 is provided with a first clearance cavity. One end of the fifth elastic member 433 is sleeved on the fifth elastic member guide post 434, and the other end elastically abuts against the top wall of the first clearance cavity.

[0152] Further, see Figure 8 and Figure 9 The plug 21 is provided with a locking groove 212 that engages with the first locking member 43, and a locking hole 213 is provided on the side wall of the locking groove 212 that engages with the second locking member 44. The second locking member 44 extends into the locking hole 213, thereby restricting the plug 21 from moving in a direction perpendicular to its own insertion and removal direction.

[0153] Furthermore, the insertion device also includes an unlocking component 5 to release the locking state between the insertion unit 2 and the interface unit 1, thereby enabling the insertion unit 2 to be pulled out.

[0154] Specifically, the unlocking component 5 includes an unlocking member 51 elastically disposed on the insertion unit 2, which can push the second locking member 44 in the locking hole 213 away from the locking hole 213.

[0155] Specifically, see Figure 9 In this embodiment, the unlocking component 5 includes an unlocking member 51 and a fourth elastic member 52. The insertion unit 2 is provided with an unlocking component receiving cavity 221. The unlocking component receiving cavity 221 is provided with a fourth elastic member guide post 222. The lower end of the unlocking member 51 is provided with a second clearance cavity. The lower end of the fourth elastic member 52 is sleeved on the fourth elastic member guide post 222. The lower end of the fourth elastic member 52 elastically abuts against the top wall of the second clearance cavity. The lower end of the unlocking member 51 is always located in the unlocking component receiving cavity 221. The lower end of the unlocking member 51 protrudes relative to the insertion unit 2 in the free state.

[0156] Specifically, in this embodiment, the unlocking component receiving cavity 221 is disposed on the support block 22, which facilitates the operator to operate the unlocking component 5. The lower end of the unlocking member 51 has a third inclined surface 511 cut on the side facing the locking hole 213, and one end of the second locking member 44 facing the locking hole 213 has a tapered structure, the tip of which can abut against the third inclined surface 511.

[0157] When the second locking member 44 can elastically extend relative to the first locking member 43 and extend into the locking hole 213 of the plug 21, the tip of the conical structure abuts against the third inclined surface 511.

[0158] When it is necessary to pull out the insertion unit 2, the operator presses down on the unlocking member 51. As the unlocking member 51 moves downward, the tip of the conical structure of the second locking member 44 is gradually pushed out of the locking hole 213 by the third inclined surface 511. Finally, the tip of the conical structure is completely pushed out of the locking hole 213 by the side of the unlocking member 51. At this time, under the elastic recovery action of the second elastic member, the first locking member 43 can be reset to the initial position, so that the insertion unit 2 can be pulled out smoothly.

[0159] When insertion unit 2 is not inserted into interface unit 1, the locking mechanism is in an initial free state. In the initial free state, as... Figures 3-6 As shown, slider 3 is also in its initial state, and the first locking member 43 is located in the interlayer cavity 114 and is supported by slider 3.

[0160] When the insertion unit 2 begins to insert into the interface unit 1, the operator holds the support block 22 and inserts the plug 21 into the through cavity 31. As the plug 21 moves the slider 3 toward the inner core 12, the side wall of the blind end of the lever 41 moves to abut against the lower end of the lever 41. Then, as the slider 3 moves toward the inner core 12, it drives the lever 41 to rotate. The lever 41 drives the linkage plate 42 to move to the left. At the same time, the slider 3 moves to a position away from the initial position to release the vertical restriction on the first locking member 43. The first locking member 43 pops out under the action of the second elastic member. The first locking member 43 is pushed by the first inclined surface 4221 to disengage from the interlayer cavity 114 and locks with the plug 21 to restrict the plug 21 from moving along its own insertion and removal direction. After the first locking member 43 is locked with the plug 21, under the elastic action of the fifth elastic member 433, the second locking member 44 pops out and extends into the locking hole 213, thereby restricting the plug 21 from moving in a direction perpendicular to its own insertion and removal direction.

[0161] When it is necessary to remove the insertion unit 2, the operator presses down on the unlocking member 51. As the unlocking member 51 moves downward, the tip of the conical structure is gradually pushed out of the locking hole 213 by the third inclined surface 511. Finally, the tip of the conical structure is completely pushed out of the locking hole 213 by the side of the unlocking member 51. At this time, under the elastic recovery action of the second elastic member, the first locking member 43 can be reset to the initial position, so that the insertion unit 2 can be smoothly removed.

[0162] At the same time, when the first locking member 43 is reset to the initial position, with the cooperation of the second inclined surface 431 and the first inclined surface 4221, and under the elastic restoring force of the sixth elastic member 423, the linkage plate 42 can move to the right and reset to the initial free state, and the toggle block 41 also rotates to the initial state.

[0163] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. Plug-in device, characterized in that The utility model relates to an interface device, which comprises: an interface unit (1) comprising a shell (11) and an inner core (12), the shell (11) is provided with a plug cavity (111) with an opening at one end, the inner core (12) is arranged at the closed end of the plug cavity (111), and the inner core (12) is provided with a plug hole (121); a plug-in unit (2) comprising a plug (21) provided with a plug column (211), the plug (21) can be inserted into the plug cavity (111), and the plug column (211) can be inserted into the plug hole (121); the plug-in device further comprises a locking mechanism, which comprises: a sliding block (3) provided with a through cavity (31) with openings at both ends, the sliding block (3) is slidably arranged in the plug cavity (111), the plug (21) can be inserted into the through cavity (31) and drive the sliding block (3) to move towards the inner core (12); a linkage assembly (4) arranged in the interlayer cavity (114) of the shell (11) in communication with the plug cavity (111), the linkage assembly (4) is actuated when the sliding block (3) moves towards the inner core (12), and the linkage assembly (4) is locked with the plug (21) when the plug column (211) is inserted into the plug hole (121).

2. Plug-in device according to claim 1, characterized in that The inner core (12) is movably arranged at the closed end of the plug cavity (111), the sliding block (3) is provided with a first rack (32) extending towards the inner core (12), the inner core (12) is provided with a second rack (122) extending towards the sliding block (3), and the inner wall of the plug cavity (111) is rotatably provided with a gear (112), the second rack (122) is always engaged with the gear (112), and the first rack (32) is always engaged with the gear (112).

3. Plug-in device according to claim 2, characterized in that The inner wall of the plug cavity (111) is provided with a gear mounting rack (113), the gear (112) is rotatably arranged on the gear mounting rack (113), the gear mounting rack (113) is provided with a moving guide column (1131) extending towards the sliding block (3), the sliding block (3) is provided with a guide hole slidably connected with the moving guide column (1131), the moving guide column (1131) is sleeved with a first elastic member (1132), one end of the first elastic member (1132) is elastically abutted with the gear mounting rack (113), and the other end is elastically abutted with the sliding block (3).

4. The plug-in device according to claim 1, characterized in that The linkage assembly (4) comprises: a dial block (41) rotatably arranged in the shell (11), the first end is located in the plug cavity (111), the second end is located in the interlayer cavity (114), and the sliding block (3) can be moved to abut against the first end and push the dial block (41) to rotate. A linkage plate (42) movably arranged in the interlayer cavity (114), one end of the linkage plate (42) is hingedly connected with the second end of the push block (41), the other end of the linkage plate (42) extends away from the inner core (12), and the other end of the linkage plate (42) is provided with a first inclined surface (4221); A first locking member (43) is provided with a second inclined surface (431) abutting against the first inclined surface (4221), the first locking member (43) is arranged in the interlayer cavity (114) and can be pushed by the first inclined surface (4221) to be separated from the interlayer cavity (114) and clamped with the plug (21) to limit the movement of the plug (21) in the plug-in direction.

5. Plug-in device according to claim 4, characterized in that The first locking member (43) and the inner wall of the interlayer cavity (114) are connected with a second elastic member, and the second elastic member is configured to always have a movement trend of pulling the first locking member (43) back to the interlayer cavity (114).

6. Plug-in device according to claim 4, characterized in that The linkage assembly (4) further comprises a second locking member (44) elastically arranged in the first locking member (43), when the first locking member (43) is clamped with the plug (21), the second locking member (44) can be elastically extended relative to the first locking member (43) and extended into the plug (21) to limit the movement of the plug (21) in a direction perpendicular to the plug-in direction.

7. Plug-in device according to claim 6, characterized in that The plug (21) is provided with a locking groove (212) clamped with the first locking member (43), and the side wall of the locking groove (212) is provided with a locking hole (213) inserted with the second locking member (44).

8. Plug-in device according to claim 7, characterized in that The plug-in device further comprises an unlocking assembly (5), the unlocking assembly (5) comprises an unlocking member (51) elastically arranged on the plug-in unit (2), and the unlocking member (51) can push the second locking member (44) in the locking hole (213) back to the first locking member (43).

9. Plug-in device according to any of claims 2-8, characterized in that One end of the through cavity (31) away from the inner core (12) is rotatably provided with a blocking plate assembly (6), when the plug-in unit (2) is not inserted, the blocking plate assembly (6) blocks the opening of one end of the through cavity (31) away from the inner core (12), and when the plug-in unit (2) is inserted, the blocking plate assembly (6) can be pushed away.

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