Expansion connection equipment for multifunctional computer and use method of expansion connection equipment

Abstract

The invention discloses a multifunctional computer expansion connection device and a using method thereof.The device comprises a docking station body and a jack formed in the surface of one side of the docking station body and further comprises a positioning dustproof unit and an adjusting adsorption unit which are arranged on the docking station body, and a connecting line is arranged at the end of the docking station body; the positioning dustproof unit comprises a storage box, a positioning rod, a strip-shaped push plate, a pull rod, a limiting rubber ring, a sealing cover plate, a limiting sleeve and a supporting spring. The adjusting adsorption unit comprises a bearing box, a supporting sleeve, a suction cup, a two-way lead screw, a supporting plate and a plugging rubber column. According to the device, the two-way lead screw is reversely rotated, the two supporting plates can drive the blocking rubber column to move to be called out of the air inlet in the supporting sleeve while the distance is increased, external air can be diffused into the suction cup after entering the supporting sleeve, and the suction cup can bulge and release the adsorption state after entering air; the equipment is simple in structure and low in preparation cost while the adsorption operation is simple and the efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular to an expansion connection device for a multifunctional computer and a use method thereof. Background Art

[0002] Nowadays, most computer expansion devices use expansion docks, which are also called port replicators. They are external devices designed for laptops. By replicating or even expanding the ports of laptops, they can make the computer conveniently connected to multiple accessories or external devices (such as power adapters, network cables, mice, external keyboards, printers, and external monitors) in one stop. Existing computer expansion devices are generally connected to computers through wires using USB plugs. When in use, the length of the wire cannot be adjusted according to needs, and the excess length of the wire cannot be rolled up, which makes the wire easily entangled with other wires, affecting use.

[0003] The publication number is CN116646787A, which discloses a multifunctional computer expansion connection device, belonging to the field of computer technology. The device of the present invention includes an expansion dock, the bottom of which is fixedly connected with a base, and the multifunctional computer expansion connection device is provided with a wire collection box, a wire and a rotating rod, so that the device is placed on a desktop for use, or the device is placed on a host for use, the device is placed in an appropriate position, and then the operator pulls the limit block so that the limit block drives one end of the card column to move out of the card slot, and then pulls the USB connector so that the USB connector drives the wire to be released, and then the operator releases the limit block, at which time the support spring pushes the limit block and the card column to reset and move, so that one end of the card column is inserted into the card slot, the rotating rod is limited, and then one end of the USB connector is inserted into the port on the host, so that the host is connected to the device, and the length of the wire released can be adjusted as needed.

[0004] Although the above scheme can reel in excess length of wires and perform dust prevention and adsorption fixation, the method of adjusting the dustproof parts by operating the threaded column makes it difficult for personnel to operate the threaded column due to the small space and slow efficiency of adjusting the dustproof parts. The suction cup at the bottom of the expansion dock uses a large number of transmission parts to perform exhaust adsorption. The adsorption operation of the equipment is cumbersome, inefficient, and its structure is complex and the preparation cost is high. Therefore, we propose a multi-functional computer expansion connection device and its use method. Summary of the invention

[0005] The main purpose of the present invention is to provide an expansion connection device for a multi-functional computer and a method of using the same. The positioning dustproof unit and the adjustment adsorption unit can effectively solve the problem of adjusting the dustproof parts by operating the threaded column in the background technology, the small space for operating the threaded column makes it difficult for personnel to hold and operate, and the dustproof parts are adjusted in an efficient manner. The suction cup at the bottom of the expansion dock uses a large number of transmission parts to perform exhaust adsorption, and the equipment adsorption operation is cumbersome, inefficient, and its structure is complex and the preparation cost is high.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a multifunctional computer expansion connection device and a method of using the same, the device of the present invention comprises an expansion dock body and a jack arranged on a surface of one side of the expansion dock body, and also comprises a positioning dustproof unit and an adjustment adsorption unit arranged on the expansion dock body, and a connection line is arranged at the end of the expansion dock body; The positioning dustproof unit comprises a storage box, a positioning rod, a strip push plate, a pull rod, a limiting rubber ring, a closing cover plate, a limiting sleeve and a supporting spring, the storage box is fixedly arranged on the other side surface of the expansion dock body and its bottom is open, one end of the positioning rod is fixedly connected to the top surface of the storage box, the strip push plate is movably placed in the storage box, and the positioning rod movably penetrates the strip push plate, and a movable through hole is opened at the center of the top surface of the storage box. One end of the pull rod is connected with the center of the top surface of the strip push plate, and the other end of the pull rod extends to the outside of the storage box through the movable through hole, the limiting rubber ring is sleeved and installed on the outer peripheral surface of the pull rod and is located outside the storage box, the closing cover plate is movably sleeved on the pull rod and is located above the limiting rubber ring, the closing cover plate is "L"-shaped and is located outside the insertion hole, the limiting sleeve is assembled on the outer peripheral surface of the top end of the pull rod by threading and is located above the closing cover plate, and the supporting spring is surrounded and arranged on the outer peripheral surface of the positioning rod and is located above the strip push plate; The adjustment adsorption unit includes a carrier box, a support sleeve, a suction cup, a two-way screw, a support plate and a sealing rubber column. The carrier box is fixedly arranged on the bottom surface of the expansion dock body, and the two support sleeves are symmetrically fixed on the bottom surface of the carrier box. The suction cup is fixedly arranged at the bottom end of the support sleeve. A strip through groove is opened on the bottom surface of the carrier box, and the two-way screw is movably arranged on the inner wall of one end of the carrier box and extends to the outside of the carrier box. A total of two support plates are provided and respectively correspond to the positive and negative sections of threads symmetrically arranged on the two-way screw. The support plate is in a "T" shape and is located on the strip through groove. An air inlet hole with a truncated cone-shaped cross-sectional end face is opened on the outer peripheral surface of one side of the support sleeve close to the vertical center axis of the carrier box. The sealing rubber column is in a truncated cone shape and one end of it is fixedly connected to the side of the support plate, and the other end of the sealing rubber column movably extends into the air inlet hole.

[0007] Preferably, the limiting sleeve is in a "T" shape.

[0008] Preferably, the positioning and dustproof units are provided in a plurality of groups and are arranged in a one-to-one correspondence with a plurality of jacks.

[0009] Preferably, every two positioning rods form a group and are symmetrically arranged in the storage box, and the support springs and the positioning rods are arranged in a one-to-one correspondence.

[0010] Preferably, the adjustment adsorption unit further comprises a guide rod, which is fixedly arranged on the inner wall at the other end of the carrying box and movably passes through the two support plates.

[0011] Preferably, the positioning rod and the pull rod are arranged parallel to each other, and the bidirectional screw rod and the pull rod are arranged perpendicular to each other.

[0012] Preferably, a toggle block is fixedly provided on the end surface of the bidirectional lead screw that movably extends to the outside of the carrying box.

[0013] Preferably, a wire winding storage frame is fixedly provided at the end of the expansion dock body, and the wire winding storage frame is located outside the connecting wire. A limit frame is fixedly provided at the end of the wire winding storage frame, and the connecting wire can be wound outside the wire winding storage frame, and the connecting wire head can be placed inside the wire winding storage frame.

[0014] A method for using an expansion connection device for a multifunctional computer comprises the following steps: Step 1: Connect to computer: The connecting wire at the end of the docking station body is directly connected to the computer interface, and the connecting wire is wound outside the winding storage frame and is limited by the limit frame at the end of the winding storage frame; Step 2: Adsorption and fixation: The two-way screw rod is operated to rotate forward and backward on the carrier box. The two "T"-shaped support plates threadedly connected to the two-way screw rod are subjected to force to move relative to the strip through groove to adjust the spacing. The two sealing rubber columns are driven by the support plate to adjust the distance with the support sleeve. The guide rod guides the support plate to slide and translate to cooperate with the adjustment process. After the sealing rubber column approaches the support sleeve and is inserted into the air inlet hole with a truncated cone-shaped cross-sectional end surface opened on the outer peripheral surface of the filling support sleeve, the outside air cannot enter the support sleeve, and the expansion dock body is pressed down. The suction cup at the bottom of the support sleeve is pressed to exhaust and adsorbed and fixed in the working position; Step 3: External device connection: The personnel hold and pull up the sealing rubber column, and the limiting rubber ring installed on the outer circumference of the pull rod and located outside the storage box drives the "L"-shaped closed cover plate located outside the socket to move up, so that the corresponding socket is opened to connect the external device. At the same time, the pull rod drives the strip push plate to slide upward on the positioning rod and push and squeeze the support spring. After the external device is removed from the socket, the closed cover plate loses its obstruction, and the support spring arranged around the outer circumference of the positioning rod and located above the strip push plate recovers its deformation, and drives the closed cover plate to move down and reset through the pull rod and close to the expansion dock body, so that the socket is closed; Step 4: Disassembly: Rotate the bidirectional screw in the opposite direction, and the two support plates will be spaced apart while driving the sealing rubber column to move and adjust the air inlet hole on the support sleeve. After the outside air enters the support sleeve, it can diffuse into the suction cup. The suction cup will swell and release the adsorption state when the air enters. After removing the connecting wire, the whole equipment is disassembled.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a positioning dustproof unit is provided, and the sealing rubber column is pulled up by holding the limiting rubber ring which is sleeved on the outer circumference of the pull rod and located outside the storage box can drive the closed cover plate which is in an "L" shape and located outside the plug hole to move up so that the corresponding plug hole is opened to connect the external device. At the same time, the pull rod drives the strip push plate to slide up on the positioning rod and push and squeeze the supporting spring. After the external device is removed from the plug hole, the closed cover plate loses its obstruction, and the deformation recovery of the supporting spring which is arranged on the outer circumference of the positioning rod and located above the strip push plate can be driven by the pull rod to move down and reset and close to the expansion dock body, so that the plug hole is closed. After long-term use, the sealing rubber column can be disassembled by rotating, and the closed cover plate can be removed from the pull rod. After removing the limiting rubber ring, the pull rod and the strip push plate can be removed from the storage box. The supporting spring loses its restriction and can be disassembled from the storage box for replacement. The equipment is convenient and quick to operate the closed cover plate as a dustproof component, and is flexible to maintain and replace the mobilization structure.

[0016] The two-way screw rod is rotated in the opposite direction, and the two support plates can be driven to move the sealing rubber column to adjust the air inlet hole on the support sleeve at the same time. The outside air can diffuse into the suction cup after entering the support sleeve, and the air entering the suction cup can swell and release the adsorption state. The adsorption operation of the equipment is simple and the efficiency is improved. At the same time, the structure is simple and the preparation cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a multifunctional computer expansion connection device of the present invention; Figure 2 A schematic top view of a multifunctional computer expansion connection device according to the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle; Figure 4 For the present invention Figure 2 Schematic diagram of the cross-sectional structure at the middle BB; Figure 5 For the present invention Figure 2 Schematic diagram of the cross-section structure at CC in the middle; Figure 6 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at DD in the middle.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Docking station body; 2. Positioning dustproof unit; 201. Storage box; 202. Positioning rod; 203. Strip push plate; 204. Pull rod; 205. Limiting rubber ring; 206. Closing cover; 207. Limiting sleeve; 208. Support spring; 3. Adjust the adsorption unit; 301. Carrying box; 302. Support sleeve; 303. Suction cup; 304. Bidirectional screw rod; 305. Support plate; 306. Sealing rubber column; 307. Guide rod; 4. Socket; 5. Connecting wire; 6. Toggle block; 7. Wire winding storage frame; 8. Limit frame. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0022] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, a multifunctional computer expansion connection device includes an expansion dock body 1 and a socket 4 arranged on a side surface of the expansion dock body 1, and also includes a positioning dustproof unit 2 and an adjustment adsorption unit 3 arranged on the expansion dock body 1. A connecting line 5 is arranged at the end of the expansion dock body 1; The positioning and dustproof unit 2 includes a storage box 201, a positioning rod 202, a strip push plate 203, a pull rod 204, a limiting rubber ring 205, a closing cover 206, a limiting sleeve 207 and a supporting spring 208. The storage box 201 is fixedly arranged on the other side surface of the expansion dock body 1 and its bottom is open. One end of the positioning rod 202 is fixedly connected to the top surface of the storage box 201. The strip push plate 203 is movably placed in the storage box 201, and the positioning rod 202 movably penetrates the strip push plate 203. A movable through hole is opened at the center of the top surface of the storage box 201. One end of the pull rod 204 is fixedly connected to the strip push plate 20 3, the other end of the pull rod 204 extends to the outside of the storage box 201 through the movable through hole, the limiting rubber ring 205 is sleeved on the outer circumference of the pull rod 204 and is located outside the storage box 201, the closed cover 206 is sleeved on the pull rod 204 and is located above the limiting rubber ring 205, the closed cover 206 is "L" shaped and is located outside the insertion hole 4, the limiting sleeve 207 is assembled on the outer circumference of the top of the pull rod 204 through a thread and is located above the closed cover 206, and the support spring 208 is arranged around the outer circumference of the positioning rod 202 and is located above the strip push plate 203; The adjustment adsorption unit 3 includes a carrier box 301, a support sleeve 302, a suction cup 303, a bidirectional screw rod 304, a support plate 305 and a plugging rubber column 306. The carrier box 301 is fixedly arranged on the bottom surface of the expansion dock body 1, and two support sleeves 302 are symmetrically fixedly arranged on the bottom surface of the carrier box 301. The suction cup 303 is fixedly arranged at the bottom end of the support sleeve 302. A strip-shaped through groove is opened on the bottom surface of the carrier box 301. The bidirectional screw rod 304 is movably arranged on the inner wall of one end of the carrier box 301 and extends to the carrier. On the outside of the carrier box 301, there are two support plates 305, which correspond to the positive and negative threads symmetrically arranged on the bidirectional screw rod 304 respectively. The support plate 305 is in a "T" shape and is located on the strip through groove. The support sleeve 302 is provided with an air inlet hole with a truncated cone-shaped cross-sectional end face on the outer peripheral surface on one side close to the vertical center axis of the carrier box 301. The sealing rubber column 306 is in a truncated cone shape and one end of it is fixedly connected to the side of the support plate 305, and the other end of the sealing rubber column 306 is movably extended into the air inlet hole.

[0023] The limiting sleeve 207 is in a "T" shape.

[0024] There are a plurality of positioning and dustproof units 2 arranged in a one-to-one correspondence with a plurality of jacks 4 .

[0025] Each two positioning rods 202 form a group and are symmetrically arranged in the storage box 201 , and the support springs 208 and the positioning rods 202 are arranged in a one-to-one correspondence.

[0026] The positioning rod 202 and the pull rod 204 are arranged parallel to each other, and the bidirectional screw rod 304 and the pull rod 204 are arranged perpendicular to each other.

[0027] A wire winding storage frame 7 is fixedly provided at the end of the expansion dock body 1 , and the wire winding storage frame 7 is located outside the connecting wire 5 , and a limit frame 8 is fixedly provided at the end of the wire winding storage frame 7 .

[0028] By positioning the dustproof unit 2, the equipment can conveniently and quickly operate the dustproof component of the closed cover plate 206 and is flexible in maintaining and replacing the movable structure. Example

[0029] like Figure 1 , Figure 3 , Figure 4 as well as Figure 6 As shown, a multifunctional computer expansion connection device includes an expansion dock body 1 and a socket 4 arranged on a side surface of the expansion dock body 1, and also includes a positioning dustproof unit 2 and an adjustment adsorption unit 3 arranged on the expansion dock body 1. A connecting line 5 is arranged at the end of the expansion dock body 1; The positioning and dustproof unit 2 includes a storage box 201, a positioning rod 202, a strip push plate 203, a pull rod 204, a limiting rubber ring 205, a closing cover 206, a limiting sleeve 207 and a supporting spring 208. The storage box 201 is fixedly arranged on the other side surface of the expansion dock body 1 and its bottom is open. One end of the positioning rod 202 is fixedly connected to the top surface of the storage box 201. The strip push plate 203 is movably placed in the storage box 201, and the positioning rod 202 movably penetrates the strip push plate 203. A movable through hole is opened at the center of the top surface of the storage box 201. One end of the pull rod 204 is fixedly connected to the strip push plate 20 3, the other end of the pull rod 204 extends to the outside of the storage box 201 through the movable through hole, the limiting rubber ring 205 is sleeved on the outer circumference of the pull rod 204 and is located outside the storage box 201, the closed cover 206 is sleeved on the pull rod 204 and is located above the limiting rubber ring 205, the closed cover 206 is "L" shaped and is located outside the insertion hole 4, the limiting sleeve 207 is assembled on the outer circumference of the top of the pull rod 204 through a thread and is located above the closed cover 206, and the support spring 208 is arranged around the outer circumference of the positioning rod 202 and is located above the strip push plate 203; The adjustment adsorption unit 3 includes a carrier box 301, a support sleeve 302, a suction cup 303, a bidirectional screw rod 304, a support plate 305 and a plugging rubber column 306. The carrier box 301 is fixedly arranged on the bottom surface of the expansion dock body 1, and two support sleeves 302 are symmetrically fixedly arranged on the bottom surface of the carrier box 301. The suction cup 303 is fixedly arranged at the bottom end of the support sleeve 302. A strip-shaped through groove is opened on the bottom surface of the carrier box 301. The bidirectional screw rod 304 is movably arranged on the inner wall of one end of the carrier box 301 and extends to the carrier. On the outside of the carrier box 301, there are two support plates 305, which correspond to the positive and negative threads symmetrically arranged on the bidirectional screw rod 304 respectively. The support plate 305 is in a "T" shape and is located on the strip through groove. The support sleeve 302 is provided with an air inlet hole with a truncated cone-shaped cross-sectional end face on the outer peripheral surface on one side close to the vertical center axis of the carrier box 301. The sealing rubber column 306 is in a truncated cone shape and one end of it is fixedly connected to the side of the support plate 305, and the other end of the sealing rubber column 306 is movably extended into the air inlet hole.

[0030] The adjustment adsorption unit 3 further includes a guide rod 307 , which is fixedly arranged on the inner wall of the other end of the carrying box 301 and movably penetrates the two support plates 305 .

[0031] The end surface of the bidirectional lead screw 304 that movably extends to the outside of the carrying box 301 is fixedly provided with a toggle block 6 .

[0032] A wire winding storage frame 7 is fixedly provided at the end of the expansion dock body 1 , and the wire winding storage frame 7 is located outside the connecting wire 5 , and a limit frame 8 is fixedly provided at the end of the wire winding storage frame 7 .

[0033] By adjusting the adsorption unit 3, the adsorption operation of the equipment is simplified and the efficiency is improved. At the same time, the structure is simple and the preparation cost is low.

[0034] The following is the working principle of the present invention: The connecting wire 5 at the end of the docking station body 1 is directly connected to the computer interface. The connecting wire 5 is wound outside the winding storage frame 7 and is limited by the limit frame 8 at the end of the winding storage frame 7. The bidirectional screw rod 304 is operated to rotate forward and reverse on the carrier box 301. The two "T"-shaped support plates 305 threadedly connected to the bidirectional screw rod 304 are subjected to force to move relative to the strip through groove to adjust the spacing. The two sealing rubber columns 306 are driven by the support plate 305 to adjust the spacing with the support sleeve 302. The guide rod 307 guides the support plate 305 to slide and translate to cooperate with its adjustment process. After the sealing rubber column 306 is close to the support sleeve 302 and inserted into the air inlet hole with a truncated cone shape on the outer circumference of the filling support sleeve 302, the outside air cannot enter the support sleeve 302, and the expansion dock body 1 is pressed down. The suction cup 303 at the bottom of the support sleeve 302 is pressed and fixed in the working position by exhaust adsorption. The personnel hold and pull up the sealing rubber column 306, which is installed on the outer circumference of the pull rod 204. The limiting rubber ring 205 on the upper and outer side of the storage box 201 drives the closed cover plate 206 in an "L" shape and located on the outer side of the socket 4 to move up so that the corresponding socket 4 is opened to connect the external device. At the same time, the pull rod 204 drives the strip push plate 203 to slide upward on the positioning rod 202 and push and squeeze the support spring 208. After the external device is removed from the socket 4, the closed cover plate 206 loses its obstruction, and the support spring 208 disposed around the outer peripheral surface of the positioning rod 202 and located above the strip push plate 203 is opened. The support spring 208 is deformed and restored, and the closing cover plate 206 is moved down and reset to fit closely to the expansion dock body 1 through the pull rod 204. The jack 4 is closed, and the bidirectional screw rod 304 is rotated in the opposite direction. The two support plates 305 are spaced apart, and the sealing rubber column 306 is driven to move out of the air inlet hole on the support sleeve 302. The outside air enters the support sleeve 302 and diffuses into the suction cup 303. The suction cup 303 is inflated and the adsorption state is released when the air enters. After the connecting line 5 is removed, the entire device is disassembled.

[0035] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multifunctional computer expansion connection device, comprising an expansion dock body (1) and a socket (4) arranged on a side surface of the expansion dock body (1), characterized in that: It also includes a positioning dustproof unit (2) and an adjustment adsorption unit (3) arranged on the expansion dock body (1); a connecting line (5) is arranged at the end of the expansion dock body (1); The positioning and dustproof unit (2) comprises a storage box (201), a positioning rod (202), a strip push plate (203), a pull rod (204), a limiting rubber ring (205), a closing cover plate (206), a limiting sleeve (207) and a supporting spring (208); the storage box (201) is fixedly arranged on the other side surface of the expansion dock body (1) and its bottom is open; one end of the positioning rod (202) is fixedly connected to the inner top surface of the storage box (201); the strip push plate (203) is movably placed in the storage box (201), and the positioning rod (202) movably passes through the strip push plate (203); a movable through hole is opened at the center of the top surface of the storage box (201); one end of the pull rod (204) is connected to the strip push plate (203) is connected at the center of the top surface, the other end of the pull rod (204) extends to the outside of the storage box (201) through the movable through hole, the limiting rubber ring (205) is sleeved and installed on the outer peripheral surface of the pull rod (204) and is located outside the storage box (201), the closed cover (206) is sleeved on the pull rod (204) and is located above the limiting rubber ring (205), the closed cover (206) is "L"-shaped and is located outside the jack (4), the limiting sleeve (207) is assembled on the outer peripheral surface of the top end of the pull rod (204) through a thread and is located above the closed cover (206), and the support spring (208) is arranged around the outer peripheral surface of the positioning rod (202) and is located above the strip push plate (203); The adjustment adsorption unit (3) comprises a carrying box (301), a supporting sleeve (302), a suction cup (303), a bidirectional screw rod (304), a supporting plate (305) and a sealing rubber column (306); the carrying box (301) is fixedly arranged on the bottom surface of the expansion dock body (1); two supporting sleeves (302) are symmetrically fixedly arranged on the bottom surface of the carrying box (301); the suction cup (303) is fixedly arranged at the bottom end of the supporting sleeve (302); a strip-shaped through groove is provided on the bottom surface of the carrying box (301); the bidirectional screw rod (304) is movably arranged at one end of the carrying box (301). The support plate (305) is provided on the inner wall and extends to the outside of the carrier box (301). The support plate (305) is provided with two and respectively corresponds to the positive and negative threads symmetrically arranged on the bidirectional screw rod (304). The support plate (305) is in a "T" shape and is located on the strip-shaped through groove. The support sleeve (302) is provided with an air inlet hole with a truncated cone-shaped cross-sectional end face on the outer peripheral surface of one side close to the vertical central axis of the carrier box (301). The sealing rubber column (306) is in a truncated cone shape and one end of which is fixedly connected to the side of the support plate (305). The other end of the sealing rubber column (306) movably extends into the air inlet hole.

2. The multifunctional computer expansion connection device according to claim 1, characterized in that: The limiting sleeve (207) is in a "T" shape.

3. The multifunctional computer expansion connection device according to claim 1, characterized in that: The positioning dustproof units (2) are provided in a total of multiple groups and are arranged in a one-to-one correspondence with the plurality of sockets (4).

4. The multifunctional computer expansion connection device according to claim 1, characterized in that: Every two positioning rods (202) form a group and are symmetrically arranged in the storage box (201), and the support springs (208) and the positioning rods (202) are arranged in a one-to-one correspondence.

5. The multifunctional computer expansion connection device according to claim 1, characterized in that: The adjustment adsorption unit (3) further comprises a guide rod (307), wherein the guide rod (307) is fixedly arranged on the inner wall of the other end of the carrying box (301) and movably penetrates the two support plates (305).

6. The multifunctional computer expansion connection device according to claim 1, characterized in that: The positioning rod (202) and the pull rod (204) are arranged parallel to each other, and the bidirectional screw rod (304) and the pull rod (204) are arranged perpendicular to each other.

7. The multifunctional computer expansion connection device according to claim 1, characterized in that: A toggle block (6) is fixedly disposed on the end surface of the bidirectional lead screw (304) that movably extends to the outside of the carrying box (301).

8. The multifunctional computer expansion connection device according to claim 1, characterized in that: A wire winding storage frame (7) is fixedly provided at the end of the expansion dock body (1), and the wire winding storage frame (7) is located outside the connecting wire (5), and a limit frame (8) is fixedly provided at the end of the wire winding storage frame (7).

9. A multifunctional computer expansion connection device according to any one of claims 1 to 8, characterized in that: The construction method of the cross space cantilever safety construction device comprises the following steps: Step 1: Connect to computer: The connecting wire (5) at the end of the docking station body (1) is directly connected to the computer interface, and the connecting wire (5) is wound outside the winding storage frame (7) and is restricted by the limiting frame (8) at the end of the winding storage frame (7); Step 2: Adsorption and fixation: The bidirectional screw rod (304) is operated to rotate forward and backward on the carrier box (301). Two "T"-shaped support plates (305) threadedly connected to the bidirectional screw rod (304) are subjected to force to move relative to each other on the strip-shaped through groove to adjust the spacing. The two sealing rubber columns (306) are driven by the support plates (305) to adjust the distance with the support sleeve (302). The guide rod (307) guides the support plates (305) to slide and translate to cooperate with the adjustment process. After the sealing rubber columns (306) approach the support sleeve (302) and are inserted into the air inlet hole with a truncated cone-shaped cross-sectional end surface opened on the outer peripheral surface of the support sleeve (302), the outside air cannot enter the support sleeve (302), and the expansion dock body (1) is pressed downward. The suction cup (303) at the bottom of the support sleeve (302) is pressed to exhaust and adsorb and fix it in the working position; Step 3: External device connection: A person holds and pulls up the sealing rubber column (306), and a limiting rubber ring (205) sleeved on the outer surface of the pull rod (204) and located outside the storage box (201) drives the closed cover plate (206) in an "L" shape and located outside the socket (4) to move upward, so that the corresponding socket (4) is opened to connect an external device. At the same time, the pull rod (204) drives the strip push plate (203) to slide upward on the positioning rod (202) and push and squeeze the support spring (208). After the external device is removed from the socket (4), the closed cover plate (206) loses its obstruction, and the support spring (208) arranged around the outer surface of the positioning rod (202) and located above the strip push plate (203) recovers its deformation and drives the closed cover plate (206) to move downward and reset through the pull rod (204) and close to the expansion dock body (1), so that the socket (4) is closed; Step 4: Disassembly: By rotating the bidirectional screw rod (304) in the opposite direction, the two support plates (305) can be spaced apart and at the same time, the sealing rubber column (306) can be driven to move to open the air inlet hole on the support sleeve (302). After the outside air enters the support sleeve (302), it can diffuse into the suction cup (303). When the air enters the suction cup (303), it can swell and release the adsorption state. After removing the connecting line (5), the whole device is disassembled.

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