Dock with anti-loosening structure of wire

Abstract

The utility model relates to the field of docking station, and disclose a kind of docking station with wiring anti-loosening structure, including docking station body, its side plane is equipped with multiple groups of connecting port, top surface is equipped with sliding hole, and clamping anti-loosening mechanism is set in connecting port, and dustproof mechanism is peripherally provided, through the clamping anti-loosening mechanism of symmetrical arrangement, the synergistic effect of spring and "C" shape limiting block is utilized, the firm locking of external component is realized, can effectively resist external force pulling, ensure the stability of connection under complex environment, avoid data transmission interruption and power supply anomaly, in addition, dustproof mechanism can be automatically closed when interface is idle, effectively block dust and sundries invasion, significantly reduce the contact failure caused by dust accumulation, compared with traditional docking station, the design not only improves connection reliability, but also prolongs equipment service life, while reducing maintenance cost, provides more durable, more stable use experience for user.

Description

Technical Field

[0001] This utility model relates to the field of docking stations, specifically a docking station with a wiring anti-loosening structure. Background Technology

[0002] A docking station is a device used to expand the interface functionality of electronic devices (such as laptops and tablets), providing more connection methods such as USB, HDMI, and Ethernet ports to meet users' needs for multiple device access. However, in actual use, due to frequent plugging and unplugging or external vibration, the interfaces of traditional docking stations are prone to loosening or even falling off, leading to problems such as data transmission interruption and unstable power supply. Therefore, docking stations with anti-loosening wiring structures have emerged. Through mechanical locking or elastic clips, they ensure a more secure connection between external devices and the docking station, thereby improving the reliability of data transmission and reducing equipment failures caused by poor contact. These docking stations are particularly suitable for mobile offices, industrial environments, or scenarios requiring long-term stable connections, effectively avoiding the inconvenience and losses caused by loose wiring.

[0003] Traditional docking stations typically employ simple plug-and-play interface designs, lacking effective anti-loosening mechanisms. This makes them susceptible to loosening or detachment when pulled or moved, affecting data transmission stability and potentially causing device malfunctions or even data loss due to momentary power outages or signal interruptions. Furthermore, traditional docking station interfaces are mostly exposed, lacking dust protection. Over time, dust and foreign objects can easily enter the interfaces, causing poor contact or short circuits, further reducing device reliability and lifespan. Therefore, we propose a docking station with an anti-loosening wiring structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an expansion dock with a wiring anti-loosening structure, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: an expansion dock with a wiring anti-loosening structure, comprising an expansion dock body, a plurality of connection ports equally spaced on one side plane of the expansion dock body, a plurality of sliding holes equally spaced on the top surface of the expansion dock body, a snap-fit ​​anti-loosening mechanism provided in the connection ports of the expansion dock body, and a dustproof mechanism provided on the side of the expansion dock body corresponding to the periphery of the connection ports of the expansion dock body.

[0006] Preferably, each connection port on the expansion dock body is symmetrically and fixedly provided with two of the aforementioned locking and anti-loosening mechanisms.

[0007] Preferably, the locking anti-loosening mechanism includes a fixed rod, a locking seat, a limiting block, and a spring. Locking seats are symmetrically fixedly installed on the inner walls of both sides of the connection port on the expansion dock body. A connection groove is formed on the plane of the locking seat facing the connection port on the expansion dock body. Sliding grooves are symmetrically formed on the upper and lower inner walls of the connection groove within the locking seat. A sliding hole is formed on the upper plane of the locking seat. A spring is fixedly installed on the bottom surface of the connection groove on the locking seat. The limiting block is C-shaped. A slider is fixedly installed on the upper and lower planes of the limiting block. The slider on the limiting block engages with and slides through the sliding groove within the locking seat. The bottom surface of the opening of the limiting block is fixedly connected to the other end of the spring. A fixed rod is coaxially slidably connected within the sliding hole of the locking seat. A disc-shaped handle is fixedly installed on the plane of one end of the fixed rod.

[0008] Preferably, the sliding hole on the mounting bracket and the sliding hole on the expansion dock body are coaxially aligned, and the handle of the fixing rod protrudes from the top surface of the expansion dock body.

[0009] Preferably, a connecting block is symmetrically fixedly installed on one side plane of the external component, and a fixing hole communicating with the sliding hole of the snap-fit ​​seat is opened on the upper plane of the connecting block, and the shape and size of the external component are consistent with the connection port on the expansion dock body.

[0010] Preferably, the dustproof mechanism includes a dust cover, a long connecting rod, a first short connecting rod, a second short connecting rod, a dustproof fixing ring, and a slider. A dustproof fixing ring is fixedly installed on the side of the expansion dock body corresponding to the periphery of the connection port. Slide grooves are symmetrically formed on opposite sides of the dustproof fixing ring. A rotating connecting block is fixedly installed near the bottom of the slide groove of the dustproof fixing ring. A slider is slidably connected within the slide groove of the dustproof fixing ring. Two rotating connecting blocks are fixedly installed vertically on one side of the slider. A long connecting rod is coaxially rotatably connected to the rotating connecting block within the slide groove of the dustproof fixing ring. One side of the long connecting rod... A rotating connecting block is fixedly installed on the plane. A short connecting rod two is rotatably connected to the upper rotating connecting block on the slider, and a short connecting rod one is rotatably connected to the lower rotating connecting block on the slider. Two rotating connecting blocks are fixedly installed on the two side walls of the dust cover. The other end of the short connecting rod two is rotatably connected to the upper rotating connecting block on the dust cover, and the other end of the long connecting rod is rotatably connected to the lower rotating connecting block on the dust cover. The other end of the short connecting rod one is rotatably connected to the rotating connecting block on the long connecting rod.

[0011] Compared with the prior art, this utility model provides an expansion dock with a wiring anti-loosening structure, which has the following beneficial effects:

[0012] 1. This expansion dock with a wiring anti-loosening structure features two symmetrically arranged locking anti-loosening mechanisms in each connection port, including a fixing rod, a locking seat, a limiting block, and a spring. The synergistic action of the spring and the limiting block ensures that the external component is firmly locked after insertion. This design makes the connection between the external component and the expansion dock more stable, and can effectively prevent the wiring from loosening even under external pulling force. Compared with traditional expansion docks, this device can ensure that the equipment maintains a stable connection in complex operating environments, avoiding problems such as data transmission interruption and abnormal power supply to the equipment caused by loose wiring, and providing users with a more reliable user experience.

[0013] 2. This expansion dock with a wiring anti-loosening structure has a dustproof mechanism installed on the side of the expansion dock body corresponding to the connection port. The dustproof mechanism consists of a dust cover, a long connecting rod, a short connecting rod one, a short connecting rod two, a dustproof fixing ring, and a slider. When the connection port is not in use, the dust cover can cover the connection port under the action of the connecting rod, effectively preventing dust and debris from entering. Compared with traditional expansion docks, this dustproof design can reduce connection failures caused by dust accumulation, reduce the maintenance cost and replacement frequency of the expansion dock, extend its overall service life, save users money and time costs, and also improve the durability and reliability of the expansion dock. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the explosion-proof locking mechanism of this utility model.

[0016] Figure 3 This is a schematic diagram of the dustproof mechanism of this utility model in the event of an explosion.

[0017] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0018] In the diagram: 1. Expansion dock body; 2. External connector; 3. Dust cover; 4. Long connecting rod; 5. Short connecting rod one; 6. Short connecting rod two; 7. Fixing rod; 8. Snap-fit ​​seat; 9. Limiting block; 10. Dustproof fixing ring; 11. Spring; 12. Connecting block; 13. Slider. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 An expansion dock with a wiring anti-loosening structure includes an expansion dock body 1. Multiple sets of connection ports are equidistantly opened on one side plane of the expansion dock body 1. Multiple sliding holes are equidistantly opened on the top surface of the expansion dock body 1. A snap-fit ​​anti-loosening mechanism is provided in the connection port of the expansion dock body 1. A dustproof mechanism is provided on the side of the expansion dock body 1 corresponding to the periphery of the connection port of the expansion dock body 1.

[0021] Furthermore, two locking anti-loosening mechanisms are symmetrically fixed in each connection port on the expansion dock body 1. As the core carrier of the entire device, the expansion dock body 1 provides a stable installation position for the locking anti-loosening mechanisms. The symmetrical arrangement of two locking anti-loosening mechanisms in each connection port allows for a secure locking of the connecting block 12 from both sides simultaneously. When the external component 2 is inserted, the locking anti-loosening mechanisms on both sides work synchronously, providing a stronger fixing force compared to a single anti-loosening mechanism. Even under large external pulling forces or vibration environments, it can ensure a stable connection between the external component 2 and the expansion dock body 1, preventing loosening of the connection due to unilateral force.

[0022] Furthermore, the locking anti-loosening mechanism includes a fixing rod 7, a locking seat 8, a limiting block 9, and a spring 11. Locking seats 8 are symmetrically fixedly installed on the inner walls of both sides of the connection port on the expansion dock body 1. A connection groove is formed on the plane of the locking seat 8 facing the connection port on the expansion dock body 1. Sliding grooves are symmetrically formed on the upper and lower inner walls of the connection groove within the locking seat 8. A sliding hole is formed on the upper plane of the locking seat 8. A spring 11 is fixedly installed on the bottom surface of the connection groove on the locking seat 8. The limiting block 9 is C-shaped, and sliders are fixedly installed on the upper and lower planes of the limiting block 9. The sliders on the limiting block 9 and the sliding grooves within the locking seat 8 are locked and slidably connected. The bottom surface of the opening of the limiting block 9 is fixedly connected to the other end of the spring 11. A fixing rod 7 is coaxially slidably connected within the sliding hole of the locking seat 8. A disc-shaped handle is fixedly installed on one end of the rod 7. The locking seat 8 not only provides installation space for the spring 11 and the limiting block 9, but also the sliding groove in its connecting groove precisely restricts the movement trajectory of the limiting block 9, ensuring that the limiting block 9 can only slide in a specific direction, thereby ensuring the accuracy of the engagement with the connecting block 12 of the external part 2. The spring 11 is crucial in the entire locking process. Its elastic force is the key to realizing the automatic reset of the limiting block 9 and firmly locking the connecting block 12. When the connecting block 12 squeezes the limiting block 9 to compress the spring 11, once the fixing hole of the connecting block 12 is aligned with the sliding hole of the locking seat 8, the spring 11 will quickly release its elastic potential energy, pushing the limiting block 9 to move upward, so that the connecting hole of the limiting block 9 and the fixing hole of the connecting block 12 are tightly engaged, realizing a reliable connection lock.

[0023] Furthermore, the sliding holes on the connector 8 and the expansion dock body 1 are coaxially aligned, and the handle of the fixing rod 7 protrudes from the top surface of the expansion dock body 1. The coaxial alignment of the sliding holes on the connector 8 and the expansion dock body 1 ensures the smoothness and stability of the fixing rod 7 during sliding. The handle of the fixing rod 7 protrudes from the top surface of the expansion dock body 1, making it convenient for users to operate. When it is necessary to disassemble the external component 2, the user can directly pull the handle upwards by hand to move the fixing rod 7 upwards, overcome the elastic force of the spring 11, and lower the limiting block 9, thereby releasing the lock on the connecting block 12 and making it easy to pull out the external component 2. This design greatly improves the convenience of use.

[0024] Furthermore, connecting blocks 12 are symmetrically fixedly installed on one side plane of the external connector 2. The upper surface of the connecting block 12 has a fixing hole that communicates with the sliding hole of the snap-fit ​​base 8. The shape and size of the external connector 2 are consistent with the connection port on the expansion dock body 1. The symmetrically arranged connecting blocks 12 on the external connector 2 have positions and dimensions that precisely match the snap-fit ​​anti-loosening mechanism. The fixing hole on the connecting block 12 communicates with the sliding hole of the snap-fit ​​base 8, which is the key interface for achieving a tight connection between the external connector 2 and the expansion dock body 1. The shape and size of the external connector 2 are consistent with the connection port, ensuring the accuracy and stability of the insertion process and avoiding connection difficulties or loosening due to size mismatch. It also ensures that the dustproof mechanism can effectively cover the connection port, preventing dust from entering.

[0025] Furthermore, the dustproof mechanism includes a dust cover 3, a long connecting rod 4, a first short connecting rod 5, a second short connecting rod 6, a dustproof fixing ring 10, and a slider 13. A dustproof fixing ring 10 is fixedly installed on the side of the expansion dock body 1, corresponding to the periphery of the connection port. Slide grooves are symmetrically formed on opposite sides of the dustproof fixing ring 10. A rotating connecting block is fixedly installed near the bottom of the slide groove of the dustproof fixing ring 10. A slider 13 is slidably connected within the slide groove of the dustproof fixing ring 10. Two rotating connecting blocks are fixedly installed vertically on one side of the slider 13. A long connecting rod 4 is coaxially rotatably connected to the rotating connecting block within the slide groove of the dustproof fixing ring 10. A rotating connecting block is fixedly installed on one side of the long connecting rod 4. A second short connecting rod 6 is coaxially rotatably connected to the upper rotating connecting block on the slider 13. A first short connecting rod 5 is coaxially rotatably connected to the lower rotating connecting block on the slider 13. Two rotating connecting blocks are fixedly installed vertically on both sides of the dust cover 3. The other end of the second short connecting rod 6... The long connecting rod 4 is rotatably connected to the upper rotating connecting block on the dust cover 3, and the other end of the short connecting rod 5 is rotatably connected to the lower rotating connecting block on the dust cover 3. The other end of the short connecting rod 5 is rotatably connected to the rotating connecting block on the long connecting rod 4. The dustproof fixing ring 10 provides a stable support frame for the entire dustproof mechanism. The sliding grooves on both sides provide sliding tracks for the slider 13, ensuring the stability and accuracy of the slider 13 during movement. The long connecting rod 4, the short connecting rod 5, and the short connecting rod 6 form a linkage transmission system. They cooperate with each other to convert the linear motion of the slider 13 into the rotational motion of the dust cover 3. During the opening and closing of the dust cover 3, the long connecting rod 4, as the main transmission rod, determines the opening and closing range and speed of the dust cover 3 through its length and rotation angle design. The short connecting rods 5 and 6 play an auxiliary support and fine-tuning role, ensuring that the dust cover 3 maintains balance during movement, accurately covers or leaves the connection port, and achieves a good dustproof effect.

[0026] Structural Description:

[0027] Expansion Dock Body 1: Expansion Dock Body 1 is the core load-bearing structure of the entire expansion dock. Multiple sets of connection ports are evenly distributed on one side of its plane for connecting external devices. Multiple sliding holes are evenly opened on the top surface. In conjunction with the internal structure, it provides the installation foundation for the snap-fit ​​anti-loosening mechanism and the dustproof mechanism. It is the key carrier for realizing the various functions of the expansion dock.

[0028] External component 2: External component 2 is an external equipment component that connects to the main body 1 of the expansion dock. Connecting blocks 12 are symmetrically installed on one side plane. Their shape and size are consistent with the connection port of the main body 1 of the expansion dock. Through the fixing holes on the connecting blocks 12, they cooperate with the snap-fit ​​anti-loosening mechanism inside the expansion dock to achieve a stable connection with the expansion dock.

[0029] Dust cover 3: Dust cover 3 is a key component of the dustproof mechanism. It is located outside the connection port of the expansion dock body 1. Two rotating connecting blocks are fixed on the upper and lower sides of its two side walls. It is connected to the long connecting rod 4 and the short connecting rod 6. When the connection port is not in use, it covers the connection port under the action of the connecting rod to prevent dust and debris from entering.

[0030] Long connecting rod 4: Long connecting rod 4 is the transmission component of the dustproof mechanism. One end is rotatably connected to the rotating connecting block in the groove of the dustproof fixing ring 10, and the other end is connected to the rotating connecting block below the dustproof cover 3. There is also a rotating connecting block on the side connected to the short connecting rod 5. By rotating itself, it drives the dustproof cover 3 to open and close, thereby realizing the dustproof function.

[0031] Short connecting rod 15: Short connecting rod 15 is a component that plays an auxiliary transmission role in the dustproof mechanism. One end is rotatably connected to the rotating connecting block below the slider 13 on the same axis, and the other end is connected to the rotating connecting block on the long connecting rod 4. During the opening and closing of the dustproof cover 3, it works in coordination with the long connecting rod 4 and the short connecting rod 26 to ensure the stable movement of the dustproof cover 3.

[0032] Short connecting rod 2 6: Short connecting rod 2 6 is also a transmission component of the dustproof mechanism. One end is rotatably connected to the rotating connecting block above the slider 13 on the same axis, and the other end is connected to the rotating connecting block above the dustproof cover 3. During the movement of the dustproof cover 3, it cooperates with the long connecting rod 4 and the short connecting rod 1 5 to ensure that the dustproof cover 3 can accurately cover or leave the connection port.

[0033] Fixed rod 7: Fixed rod 7 is the operating component of the locking and anti-loosening mechanism. One end of it is equipped with a disc-shaped handle that protrudes from the top surface of the expansion dock body 1 for easy operation. It slides coaxially in the sliding hole of the locking seat 8 to lock or release the external component 2.

[0034] Snap-fit ​​base 8: Snap-fit ​​base 8 is symmetrically installed on the inner walls of both sides of the connection port of the expansion dock body 1. It has a connection groove, a sliding groove and a sliding hole. The connection groove is used to install the spring 11 and the limit block 9. The sliding hole corresponds to the sliding hole of the expansion dock body 1. By cooperating with the fixing rod 7 and the limit block 9, the snap-fit ​​fixing of the external component 2 is realized.

[0035] Limiting block 9: Limiting block 9 is C-shaped. The upper and lower planes have sliders that engage with the inner groove of the locking seat 8. The bottom surface of the opening is connected to the spring 11. When the external connector 2 is inserted, the connecting block 12 of the external connector 2 is locked under the action of the spring 11 to prevent the wiring from coming loose.

[0036] Dustproof fixing ring 10: The dustproof fixing ring 10 is fixed on the outer side of the connection port of the expansion dock body 1. There are sliding grooves on the opposite sides of the two sides. There is a rotating connecting block near the bottom of the sliding groove. It provides an installation and movement track for components such as the long connecting rod 4 and the slider 13. It is an important support structure of the dustproof mechanism.

[0037] Spring 11: Spring 11 is installed on the bottom surface of the connecting groove of the snap-fit ​​seat 8, and the other end is connected to the bottom surface of the opening of the limit block 9. During the snap-fit ​​anti-loosening process, it uses its own elasticity to provide an upward elastic force to the limit block 9, so that the limit block 9 can tightly snap the connecting block 12 of the external connector 2 to ensure a stable connection.

[0038] Connecting block 12: Connecting block 12 is symmetrically fixed on one side plane of external component 2. It has a fixing hole that communicates with the sliding hole of the snap-fit ​​seat 8. It is the key part for connecting external component 2 and expansion dock body 1. Through cooperation with snap-fit ​​seat 8 and limit block 9, a stable connection between external component 2 and expansion dock is achieved.

[0039] Slider 13: Slider 13 slides in the groove of the dustproof fixing ring 10. There are two rotating connecting blocks on one side of the plane, which are coaxially connected to short connecting rod 1 5 and short connecting rod 2 6 respectively. Its sliding drives the short connecting rod to move, thereby controlling the opening and closing of the dustproof cover 3. It is an important transmission component for the movement of the dustproof mechanism.

[0040] Working principle: Before connecting the external device, the limiting block 9 is located on the end face of the connecting groove of the snap-fit ​​seat 8, and its upper part blocks the sliding hole of the snap-fit ​​seat 8 to prevent the fixing rod 7 from falling off. When the external component 2 approaches the expansion dock body 1, and the connecting block 12 is aligned with the connecting groove of the snap-fit ​​seat 8 and pushed inward, the connecting block 12 will squeeze the limiting block 9. Since the limiting block 9 is engaged and slids with the sliding groove in the snap-fit ​​seat 8 through the slider, and its opening bottom surface is connected to the spring 11, the spring 11 is compressed under the squeezing of the connecting block 12, and the limiting block 9 moves backward along the sliding groove. As the external component 2 continues to move, the limiting block 9 continues to move backward. As the connector is pushed forward, the fixing hole on the connecting block 12 gradually aligns with the sliding hole on the connector 8. At this point, the fixing rod 7, which was originally blocked by the limiting block 9, falls off and slides coaxially with the fixing hole on the connecting block 12. After the fixing rod 7 is inserted into the fixing hole, it fixes the connecting block 12, thereby firmly connecting the external component 2 to the docking station body 1. This design effectively avoids the problem of loose wiring caused by external pulling or vibration, ensuring stable data transmission and normal power supply to the equipment, and providing users with a reliable connection experience.

[0041] When the connection port is needed, push the dust cover 3 upwards, causing the slider 13 to slide upwards within the groove of the dustproof fixing ring 10. The two rotating connecting blocks on the slider 13 drive the short connecting rod 5 and the short connecting rod 6 to move respectively. The short connecting rod 6 drives the rotating connecting block above the dust cover 3, causing the dust cover 3 to rotate upwards around the connection point between the long connecting rod 4 and the rotating connecting block below the dust cover 3. At the same time, the short connecting rod 5 drives the long connecting rod 4, causing the long connecting rod 4 to rotate around its connection point with the rotating connecting block in the groove of the dustproof fixing ring 10, further assisting the dust cover 3 to open, thereby exposing the connection port and facilitating the insertion of the external component 2. When the connection port is not in use, push the slider 13 downwards in the opposite direction. The short connecting rod 5, the short connecting rod 6, and the long connecting rod 4 work together to drive the dust cover 3 to rotate downwards, covering the connection port and effectively preventing dust and debris from entering. This reduces connection failures caused by dust accumulation, lowers the maintenance cost and replacement frequency of the docking station, and extends its overall service life.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An expansion dock with a wiring anti-loosening structure, comprising an expansion dock body (1), wherein multiple sets of connection ports are equidistantly provided on one side plane of the expansion dock body (1), and multiple sliding holes are equidistantly provided on the top surface of the expansion dock body (1), characterized in that: The docking body (1) is provided with a snap-fit ​​anti-loosening mechanism in the connection port, and the side of the docking body (1) is provided with a dustproof mechanism corresponding to the periphery of the connection port.

2. The expansion dock with a wiring anti-loosening structure according to claim 1, characterized in that: Two locking anti-loosening mechanisms are symmetrically fixed in each connection port on the expansion dock body (1).

3. The expansion dock with a wiring anti-loosening structure according to claim 2, characterized in that: The locking anti-loosening mechanism includes a fixing rod (7), a locking seat (8), a limiting block (9), and a spring (11). Locking seats (8) are symmetrically fixed on the inner walls of the connection port on both sides of the expansion dock body (1). A connecting groove is provided on the plane of the locking seat (8) facing the connection port on the expansion dock body (1). Sliding grooves are symmetrically provided on the upper and lower inner walls of the connecting groove within the locking seat (8). A sliding hole is provided on the upper plane of the locking seat (8). The connecting groove on the locking seat (8)... A spring (11) is fixedly installed on the bottom surface. The limiting block (9) is "C" shaped. A slider is fixedly installed on the upper and lower planes of the limiting block (9). The slider on the limiting block (9) is engaged with and slidably connected to the sliding groove in the locking seat (8). The bottom surface of the opening of the limiting block (9) is fixedly connected to the other end of the spring (11). A fixed rod (7) is slidably connected coaxially in the sliding hole of the locking seat (8). A disc-shaped handle is fixedly installed on one end plane of the fixed rod (7).

4. The expansion dock with a wiring anti-loosening structure according to claim 3, characterized in that: The sliding hole on the card holder (8) and the sliding hole on the expansion dock body (1) are coaxially aligned, and the handle of the fixing rod (7) protrudes from the top surface of the expansion dock body (1).

5. The expansion dock with a wiring anti-loosening structure according to claim 3, characterized in that: A connecting block (12) is symmetrically fixedly installed on one side plane of the external connector (2). The upper plane of the connecting block (12) has a fixed hole that communicates with the sliding hole of the card seat (8). The shape and size of the external connector (2) are consistent with the connection port on the expansion dock body (1).

6. The expansion dock with a wiring anti-loosening structure according to claim 1, characterized in that: The dustproof mechanism includes a dust cover (3), a long connecting rod (4), a short connecting rod one (5), a short connecting rod two (6), a dustproof fixing ring (10), and a slider (13). The dustproof fixing ring (10) is fixedly installed on the side of the expansion dock body (1) corresponding to the outer periphery of the connection port of the expansion dock body (1). The dustproof fixing ring (10) has symmetrical grooves on opposite sides. A rotating connecting block is fixedly installed on the groove of the dustproof fixing ring (10) near the bottom. The slider (13) is slidably connected in the groove of the dustproof fixing ring (10). Two rotating connecting blocks are fixedly installed on one side plane of the slider (13). The long connecting rod (4) is rotatably connected to the rotating connecting block in the groove of the dustproof fixing ring (10) on the same axis. A rotating connecting block is fixedly installed on one side plane of the long connecting rod (4). A short connecting rod two (6) is rotatably connected to the upper rotating connecting block on the slider (13) and a short connecting rod one (5) is rotatably connected to the lower rotating connecting block on the slider (13). Two rotating connecting blocks are fixedly installed on the two side walls of the dust cover (3). The other end of the short connecting rod two (6) is rotatably connected to the upper rotating connecting block on the dust cover (3) and the other end of the long connecting rod (4) is rotatably connected to the lower rotating connecting block on the dust cover (3). The other end of the short connecting rod one (5) is rotatably connected to the rotating connecting block on the long connecting rod (4).

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