A waterproof coaxial cable connection device

Abstract

The application relates to the technical field of cable connection, and discloses a waterproof coaxial cable connecting device, which comprises a connecting end and a splicing end, the side surfaces of the connecting end and the splicing end are provided with rotary drum positioning structures for fixing cables, the interiors of the connecting end and the splicing end are provided with wire fixing sealing structures, the interiors of the wire fixing sealing structures are provided with power supply structures, the contact surfaces of the connecting end and the splicing end are provided with splicing structures, the rotary drum positioning structure comprises a rotary shaft handle, the outer side of the rotary shaft handle is slidably connected with a sliding ring, the inner side of the rotary shaft handle is fixedly connected with an inner cylinder, the tail end of the inner cylinder is fixedly connected with a plurality of matching strips, and the inner side of the rotary shaft handle is fixedly connected with an elastic cone cylinder, the whole operation of the application can synchronously complete transmission, sealing and locking without additional tools, the application has a self-limiting function and can prevent overload deformation, so that the assembly is simplified, the connection reliability is improved, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of cable connection technology, specifically to a waterproof coaxial cable connection device. Background Technology

[0002] In existing cable connection technologies, coaxial cable mating typically relies on threaded locking or elastic clips for mechanical fixation. However, such structures often distribute conductive contact, sealing protection, and tensile strength and anti-detachment functions across multiple independent components, resulting in cumbersome assembly steps and high requirements for operating space. Furthermore, in outdoor or humid environments, traditional connection devices often suffer from moisture seepage into conductive areas or misalignment due to a single sealing layer and insufficient guide alignment, leading to increased contact resistance. In addition, under vibration conditions, threads are prone to loosening and elastic elements are prone to fatigue, resulting in a decline in electrical performance or even signal interruption after long-term use. Therefore, there is an urgent need for an integrated design that can integrate core fixing, insulation sealing, conductive mating, and mechanical locking into the same operation process through sequential linkage, so as to balance assembly efficiency and environmental tolerance.

[0003] Patent CN220421039U discloses a waterproof coaxial cable connection device, comprising: a first cable and a base, one end of the first cable having a threaded post, and a second cable being threadedly connected to the external thread of the threaded post, one end of the second cable having a threaded groove adapted to the threaded post. When connecting two cables, this waterproof coaxial cable connection device first aligns the threaded post with the threaded groove, then rotates one cable to allow the threaded post to spiral into the threaded groove, effectively fixing the first and second cables. Next, two rotating rings are rotated to align the fixing blocks, and a first bolt is inserted through the first mounting hole into the fixing block. Finally, a first nut is used to secure the first and second cables, effectively fixing them together and preventing them from rotating and separating during use, greatly improving safety and preventing loosening. However, this patent still requires tools for installation and connection, making the assembly process cumbersome. Therefore, this waterproof coaxial cable connection device is proposed to solve the aforementioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a waterproof coaxial cable connection device to address the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a waterproof coaxial cable connection device, including a connecting end and a splicing end, wherein the sides of the connecting end and the splicing end are provided with a rotating drum positioning structure for fixing the cable; The connecting end and splicing end are equipped with a wire-fixing sealing structure inside; The internal structure of the fixed-line sealing structure is equipped with an electric conduction structure. The contact surfaces of the connecting end and the splicing end are provided with a splicing structure; The rotary drum positioning structure includes a rotating shaft handle, a sliding ring slidably connected to the outer side of the rotating shaft handle, an inner cylinder fixedly connected to the inner side of the rotating shaft handle, multiple mating strips fixedly connected to the end of the inner cylinder, an elastic cone fixedly connected to the inner side of the rotating shaft handle, a mating groove provided on the outer side of the elastic cone, a contact groove provided on the side of the mating groove near the inner cylinder, a sliding groove provided on the outer side of the rotating shaft handle, and a sealing ring fixedly connected to the inner wall of the inner cylinder.

[0006] The inner cylinder is fixedly connected to the sliding ring, the outer shape of the fitting groove and the fitting strip are mutually fitted, the sliding groove is slidably connected to the sliding ring, and the rotating shaft is threadedly connected to the connecting end or splicing end.

[0007] The fixed-line sealing structure includes a grooved connecting end and a convex ring connecting end. A cable sheath is fixedly connected to the inner rear end of the grooved connecting end or the convex ring connecting end. Multiple spring pressure plates are fixedly connected to the outer wall of each cable sheath. A compression ring is provided on the outer side of each spring pressure plate. A short threaded ring is fixedly connected to the end of the connecting end or the splicing end. A sealing groove is provided on the side of the grooved connecting end. A threaded convex ring is fixedly connected to the side of the splicing end.

[0008] The grooved end or the convex ring end is threadedly connected to the shaft handle on the same side, the extrusion ring is fixedly connected to the inner wall of the shaft handle, and the threaded convex ring is threadedly connected to the sealing groove.

[0009] The energized structure includes a solid core shell and an insulating cover. An insulating ring is fixedly connected to the side of the solid core shell. Multiple equally spaced electrical contact pieces are fixedly connected to the side of the insulating ring. Multiple wire tubes are fixedly connected to the side of the insulating ring away from the electrical contact pieces. A core insert is fixedly connected to the axis of the solid core shell. The core shell is fixedly connected to the groove end.

[0010] An electrical clamp is fixedly connected inside the insulating cover, and a core rod is fixedly connected at the axis of the insulating cover. Multiple wire tubes are also provided on the side of the insulating cover away from the solid core shell, and each wire tube is fixedly connected to the electrical clamp. The insulating cover is fixedly connected to the convex ring end.

[0011] The splicing structure includes a trapezoidal long groove and a trapezoidal splicing strip. The sides of both the connecting end and the splicing end are provided with mating hole grooves. A guide strip is fixedly connected to the middle of the side of the connecting end. A splicing pressure strip is fixedly connected to the middle of the side of the splicing end. A guide groove is provided on the side of the splicing pressure strip. A rubber strip is fixedly connected to the inner side of each trapezoidal long groove. A rubber strip groove is provided on the side of each trapezoidal splicing strip.

[0012] Both the connecting end and the splicing end have trapezoidal long grooves on their sides, and the trapezoidal long grooves on the connecting end correspond to the positions of the trapezoidal splicing strips fixed on the side of the splicing end.

[0013] The present invention, by adopting the above technical solution, can bring the following beneficial effects: This waterproof coaxial cable connector achieves smooth transmission and avoids impact damage by manually rotating a sliding ring and inner cylinder to move them sequentially. The engagement of the mating strip and groove ensures precise alignment and prevents misalignment. A sealing ring fits into the contact groove to seal gaps, blocking impurities and compensating for tolerances. The inner cylinder compresses the elastic cone, causing it to contract radially, which adaptively clamps cables of different diameters while preventing stress concentration. Simultaneously, friction enhances tensile strength and prevents slippage. The entire operation requires no additional tools, simultaneously completing transmission, sealing, and locking. It also features a self-limiting function to prevent overload deformation, thus simplifying assembly, improving connection reliability, and extending service life.

[0014] This waterproof coaxial cable connector uses a compression ring to elastically deform the spring plate, firmly positioning the cable core and adapting to different wire diameters, preventing loosening and damage. Synchronous rotation of the two rotating shafts aligns the threaded convex ring with the sealing groove, generating pre-tightening force and providing the first layer of sealing protection. The insert rod and insert cylinder are guided and aligned, ensuring accurate insertion of the electrical contacts into the clamps, achieving stable low-resistance energization. The enclosed structure of the grooved and convex ring ends, along with the insulating cover and insulating ring, provides double insulation and airtight protection for conductive components, preventing moisture, dust, and corrosion. The entire process integrates core fixing, mechanical connection, conductive contact, and sealing protection into a single tightening action, requiring no additional tools. Furthermore, the threaded self-locking and elastic clamping resist vibration and thermal expansion and contraction, thereby improving electrical safety, environmental adaptability, and long-term operational reliability.

[0015] This waterproof coaxial cable connector achieves automatic guidance and alignment through the sliding engagement of trapezoidal strips and trapezoidal grooves, preventing misalignment or jamming during manual connection. The engagement of the guide strips and guide grooves further extends the guiding stroke and increases the contact surface, making the splicing process smoother and resisting radial sway. Subsequently, rotating the shaft handle connects the grooved end and the convex ring end, filling the gap in the docking hole groove. This not only seals the internal space to prevent foreign object intrusion but also acts as a lateral locking fastener to apply tension to the connection end and splicing end, preventing loosening caused by vibration or thermal expansion and contraction. The entire splicing process achieves guidance, positioning, and locking in stages, requiring no additional fasteners. It is easy to operate, effectively improves vibration and impact resistance, and reduces the risk of increased contact resistance or insulation damage, thus balancing rapid assembly with long-term structural stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention; Figure 2 This is a schematic diagram showing the overall structural location of the present invention; Figure 3 This is a schematic diagram of the rotating drum positioning structure of the present invention; Figure 4 This is a schematic diagram of the fixed-line sealing structure of the present invention; Figure 5 For the present invention Figure 4 A magnified structural diagram of A in the middle; Figure 6 This is a schematic diagram of the energized structure of the present invention; Figure 7 This is a schematic diagram of the splicing structure of the present invention.

[0017] In the diagram: 1. Connecting end; 2. Splicing end; 3. Rotary drum positioning structure; 301. Rotary shaft handle; 302. Sliding ring; 303. Inner cylinder; 304. Fitting strip; 305. Sealing ring; 306. Elastic cone; 307. Fitting groove; 308. Contact groove; 309. Sliding groove; 4. Cable; 5. Wire fixing sealing structure; 501. Groove connecting end; 502. Convex ring connecting end; 503. Short threaded ring; 504. Extrusion ring; 505. Cable sheath; 506. Spring pressure plate; 5 07. Sealing groove; 508. Threaded protruding ring; 6. Electrically conductive structure; 601. Solid core shell; 602. Electrical contact piece; 603. Insulating ring; 604. Wire post tube; 605. Insert cylinder; 606. Insulating cover; 607. Insert rod; 608. Electrical clamp; 7. Splicing structure; 701. Trapezoidal long groove; 702. Rubber strip; 703. Trapezoidal splicing strip; 704. Rubber strip groove; 705. Guide strip; 706. Splicing pressure strip; 707. Guide groove; 708. Butt joint groove. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-7 An embodiment of the present invention is as follows: a waterproof coaxial cable connection device, including a connection end 1 and a splicing end 2, wherein the sides of both the connection end 1 and the splicing end 2 are provided with a rotating drum positioning structure 3 for fixing the cable 4; The connecting end 1 and the splicing end 2 are equipped with a fixed sealing structure 5; The internal structure of the fixed sealing structure 5 is equipped with an electric conduction structure 6; The contact surfaces of the connecting end 1 and the splicing end 2 are provided with a splicing structure 7; The rotating drum positioning structure 3 includes a rotating shaft handle 301, a sliding ring 302 slidably connected to the outer side of the rotating shaft handle 301, an inner cylinder 303 fixedly connected to the inner side of the rotating shaft handle 301, multiple engagement strips 304 fixedly connected to the end of the inner cylinder 303, an elastic cone 306 fixedly connected to the inner side of the rotating shaft handle 301, an engagement groove 307 is provided on the outer side of the elastic cone 306, a contact groove 308 is provided on the side of the engagement groove 307 near the inner cylinder 303, a sliding groove 309 is provided on the outer side of the rotating shaft handle 301, and a sealing ring 305 is fixedly connected to the inner wall of the inner cylinder 303.

[0020] The inner cylinder 303 is fixedly connected to the sliding ring 302. The outer shape of the mating groove 307 and the mating strip 304 are mutually matched. The sliding groove 309 is slidably connected to the sliding ring 302. The rotating shaft handle 301 is threadedly connected to the connecting end 1 or the splicing end 2. After inserting the cable 4 from one end of the rotating shaft handle 301, manually rotating the rotating shaft handle 301 while holding the connecting end 1 or the splicing end 2 still will cause the rotating shaft handle 301 to screw into the inside of the connecting end 1 or the splicing end 2. Subsequently, the connecting end 1 or the splicing end 2 will... The edge of end 2 contacts and pushes against the sliding ring 302, sliding along the sliding groove 309 on the outer side of the rotating shaft handle 301. When the sliding ring 302 moves, it drives the inner cylinder 303 to move together. The movement of the inner cylinder 303 causes the connected mating strip 304 to engage with the mating groove 307 on the side of the elastic cone 306. At the same time, the inner cylinder 303 drives the connected sealing ring 305 to engage with the contact groove 308 at the end of the elastic cone 306, thereby allowing the sealing ring 305 to fill the inner cylinder 301. The connection gap between the inner cylinder 303 and the elastic cone 306 is as follows: When the inner cylinder 303 approaches the end of the elastic cone 306, one end of the contact groove 308 of the elastic cone 306 will be deformed by the inner cylinder 303. The deformation of the elastic cone 306 will position the inserted cable 4. The sliding ring 302 and the inner cylinder 303 will move sequentially by manual rotation to achieve smooth transmission and avoid impact damage. The engagement of the fitting strip 304 and the fitting groove 307 will ensure accurate alignment and prevent skewing. The sealing ring 305 will fit against the contact groove 308 to close the gap, block impurities and compensate for tolerances. The inner cylinder 303 will compress the elastic cone 306 to make it radially contract, which can adaptively clamp cables 4 of different diameters and avoid stress concentration. At the same time, the friction will enhance the tensile strength and anti-loosening ability. The whole operation can be completed simultaneously by transmission, sealing and locking without additional tools. It also has a self-limiting function to prevent overload deformation, thereby simplifying assembly, improving connection reliability and extending service life.

[0021] The fixed-line sealing structure 5 includes a grooved connecting end 501 and a convex ring connecting end 502. A cable sleeve 505 is fixedly connected to the inner rear end of the grooved connecting end 501 or the convex ring connecting end 502. Multiple spring pressure plates 506 are fixedly connected to the outer wall of each cable sleeve 505. A compression ring 504 is provided on the outer side of the spring pressure plate 506. A short threaded ring 503 is fixedly connected to the end of the connecting end 1 or the splicing end 2. A sealing groove 507 is opened on the side of the grooved connecting end 501. A threaded convex ring 508 is fixedly connected to the side of the splicing end 2.

[0022] The groove end 501 or the convex ring end 502 is threadedly connected to the rotating shaft handle 301 on the same side, the extrusion ring 504 is fixedly connected to the inner wall of the rotating shaft handle 301, and the screw-in convex ring 508 is threadedly connected to the sealing groove 507.

[0023] The energized structure 6 includes a solid core shell 601 and an insulating cover 606. An insulating ring 603 is fixedly connected to the side of the solid core shell 601. Multiple equally spaced electrical contact pieces 602 are fixedly connected to the side of the insulating ring 603. Multiple wire tubes 604 are fixedly connected to the side of the insulating ring 603 away from the electrical contact pieces 602. A core insert 605 is fixedly connected to the axis of the solid core shell 601. The core shell 601 is fixedly connected to the groove end 501.

[0024] An electrical clamp 608 is fixedly connected inside the insulating cover 606. A core rod 607 is fixedly connected at the axis of the insulating cover 606. Multiple wire tubes 604 are also provided on the side of the insulating cover 606 away from the solid core shell 601, and each wire tube 604 is fixedly connected to the electrical clamp 608. The insulating cover 606 is fixedly connected to the convex ring end 502. After the core of the cable 4 passes through the inner side of the cable sleeve 505 and is inserted into the post tube 604, the grooved end 501 is connected to the end of the rotating shaft handle 301 through the short screw ring 503. During the rotation of the grooved end 501, the connected cable sleeve 505 approaches the compression ring 504, causing the compression ring 504 to compress the spring plate 506 and fix the end of the cable 4, preventing the core of the cable 4 inserted into the cable sleeve 505 from coming off. Then the rotating shaft handle 301 is rotated. At this time, the rotating shaft handle... The movement of 301 causes the grooved connecting end 501 to move together, approaching the convex ring connecting end 502 on the other side. At this time, the rotating shafts 301 on both sides of the connecting end 1 and the splicing end 2 rotate synchronously. The convex ring connecting end 502 is threadedly connected to the sealing groove 507 of the grooved connecting end 501 through the screwed convex ring 508. During the connection process, the insulating cover 606 and the insulating ring 603 move closer to each other. The insert rod 607 connected to the insulating cover 606 is inserted into the insert cylinder 605. The electrical contact piece 602 is inserted between the electrical clamp piece 608 to make contact and realize the energization. The connection between the grooved end 501 and the convex ring end 502 provides a sealing protection for the conductive components of the electrical contact 602 and the electrical clamp 608. The compression ring 504 causes the elastic deformation of the spring-loaded plate 506, which firmly positions the four cores of the cable and adapts to different wire diameters, preventing loosening and damage. Synchronous rotation of the two rotating shafts 301 causes the threaded convex ring 508 to engage with the sealing groove 507, generating pre-tightening force and providing the first layer of sealing protection. The insert rod 607 and the insert cylinder 605 are aligned to ensure the electrical contact... The 602 is accurately inserted into the electrical clip 608 to achieve stable low-resistance power supply. The closed structure of the grooved connecting end 501 and the convex ring connecting end 502, together with the insulating cover 606 and the insulating ring 603, forms double insulation and airtight protection for the conductive parts, preventing moisture, dust and corrosion. The entire process integrates wire core fixing, mechanical connection, conductive contact and sealing protection into a single tightening action, without the need for additional tools. Moreover, the thread self-locking and elastic clamping can resist vibration and thermal expansion and contraction, thereby improving electrical safety, environmental adaptability and long-term operational reliability.

[0025] The splicing structure 7 includes a trapezoidal long groove 701 and a trapezoidal splicing strip 703. The sides of both the connecting end 1 and the splicing end 2 are provided with mating hole grooves 708. A guide strip 705 is fixedly connected to the middle of the side of the connecting end 1. A splicing pressure strip 706 is fixedly connected to the middle of the side of the splicing end 2. A guide groove 707 is provided on the side of the splicing pressure strip 706. A rubber strip 702 is fixedly connected to the inner side of each trapezoidal long groove 701. A rubber strip groove 704 is provided on the side of each trapezoidal splicing strip 703.

[0026] Both the connecting end 1 and the splicing end 2 have trapezoidal long grooves 701 on their sides. The trapezoidal long grooves 701 on the connecting end 1 correspond to the trapezoidal splicing strips 703 fixed on the side of the splicing end 2. After the cable core 4 is positioned with the cable sleeve 505 to connect with the post tube 604, the connecting end 1 and the splicing end 2 are then joined together. The trapezoidal splicing strips 703 and trapezoidal long grooves 701 fixed on the connecting end 1 and the splicing end 2 are used to slide and connect accordingly, allowing the guide strip 705 connected to the connecting end 1 to slide and connect with the inner guide groove 707 of the splicing pressure strip 706 fixed to the splicing end 2. After the splicing is completed, the rotating shaft 301 connected to both sides of the connecting end 1 and the splicing end 2 is rotated to connect the groove connecting end 501 and the convex ring connecting end 502, filling the gap at the docking hole groove 708 and preventing the connecting end 1 and the splicing end 2 from loosening and separating. The sliding engagement of trapezoidal strip 703 and trapezoidal groove 701 enables automatic guidance and alignment, preventing misalignment or jamming during manual docking. The engagement of guide strip 705 and guide groove 707 further extends the guiding stroke and increases the contact surface, making the splicing process smoother and resisting radial sway. Subsequently, rotating the shaft handle 301 connects the groove end 501 and the convex ring end 502, filling the gap in the docking hole groove 708. This not only seals the internal space to prevent foreign object intrusion but also acts as a transverse locking fastener to apply tension to the connecting end 1 and the splicing end 2, preventing loosening caused by vibration or thermal expansion and contraction. The entire splicing process achieves guidance, positioning, and locking in stages, requiring no additional fasteners. It is easy to operate, effectively improves vibration and impact resistance, and reduces the risk of increased contact resistance or insulation damage, thus balancing rapid assembly with long-term structural stability.

[0027] Working principle: After inserting cable 4 into one end of the rotating shaft handle 301, manually rotate the rotating shaft handle 301 while holding the connecting end 1 or splicing end 2 still. At this time, the rotating shaft handle 301 will screw into the inside of the connecting end 1 or splicing end 2. Then, the edge of the connecting end 1 or splicing end 2 contacts and pushes against the sliding ring 302, sliding along the sliding groove 309 on the outside of the rotating shaft handle 301. When the sliding ring 302 moves, it drives the inner cylinder 303 to move together. The movement of the inner cylinder 303 drives the connected fitting. The strip 304 engages with the mating groove 307 on the side of the elastic cone 306. At the same time, the inner cylinder 303 drives the connected sealing ring 305 to engage with the contact groove 308 at the end of the elastic cone 306, thereby allowing the sealing ring 305 to fill the connection gap between the inner cylinder 303 and the elastic cone 306. In addition, when the inner cylinder 303 approaches the end of the elastic cone 306, one end of the contact groove 308 of the elastic cone 306 will be deformed by the inner cylinder 303, and the inserted cable 4 will be positioned by the deformation of the elastic cone 306. After the core of cable 4 passes through the inner side of the cable sheath 505 and is inserted into the post tube 604, the grooved end 501 is connected to the end of the rotating shaft handle 301 through a short threaded ring 503. During the rotation of the grooved end 501, it moves closer to the compression ring 504 through the connected cable sheath 505, causing the compression ring 504 to compress the spring plate 506 and fix the end of cable 4, preventing the core of cable 4 inserted into the cable sheath 505 from coming off. Then, the rotating shaft handle 301 is rotated. At this time, the movement of the rotating shaft handle 301 drives the grooved end 501 to move together, moving closer to the convex ring end 502 on the other side. The rotating shafts 301 on both sides of the synchronous rotating connecting end 1 and splicing end 2 are connected. The convex ring connecting end 502 is connected to the sealing groove 507 of the groove connecting end 501 by the screwed convex ring 508. During the connection process, the insulating cover 606 and the insulating ring 603 approach each other. The insert rod 607 connected by the insulating cover 606 is inserted into the insert cylinder 605. The electric contact 602 is inserted between the electric clamp 608 to make contact and realize the power supply. The connection between the groove connecting end 501 and the convex ring connecting end 502 plays a sealing and protection role for the conductive parts of the electric contact 602 and the electric clamp 608. After the cable core 4 is positioned by the cable housing 505 and the connecting handle of the wire post tube 604, the connecting end 1 and the splicing end 2 are joined together. The trapezoidal splicing strip 703 and trapezoidal long groove 701 fixed on the connecting end 1 and the splicing end 2 are used to slide and splice them together. The guide strip 705 connected to the connecting end 1 slides and splices together with the inner guide groove 707 of the splicing pressure strip 706 fixed to the splicing end 2. After the splicing is completed, the rotating shaft handle 301 connected to both sides of the connecting end 1 and the splicing end 2 is rotated to connect the groove connecting end 501 and the convex ring connecting end 502, filling the gap at the docking hole groove 708. At the same time, it prevents the connecting end 1 and the splicing end 2 from loosening and separating.

[0028] This invention provides a waterproof coaxial cable connection device. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A waterproof coaxial cable connection device, comprising a connecting end (1) and a splicing end (2), characterized in that: Both the connecting end (1) and the splicing end (2) are provided with a rotating drum positioning structure (3) for fixing the cable (4). The connecting end (1) and splicing end (2) are provided with a fixed sealing structure (5). The internal structure of the fixed sealing structure (5) is provided with an electric structure (6). The contact surfaces of the connecting end (1) and the splicing end (2) are provided with a splicing structure (7); The rotating cylinder positioning structure (3) includes a rotating shaft handle (301), a sliding ring (302) is slidably connected to the outer side of the rotating shaft handle (301), an inner cylinder (303) is fixedly connected to the inner side of the rotating shaft handle (301), multiple wedge strips (304) are fixedly connected to the end of the inner cylinder (303), an elastic cone (306) is fixedly connected to the inner side of the rotating shaft handle (301), a wedge groove (307) is provided on the outer side of the elastic cone (306), a contact groove (308) is provided on the side of the wedge groove (307) near the inner cylinder (303), a sliding groove (309) is provided on the outer side of the rotating shaft handle (301), and a sealing ring (305) is fixedly connected to the inner wall of the inner cylinder (303). The splicing structure (7) includes a trapezoidal long groove (701) and a trapezoidal splicing strip (703). The sides of the connecting end (1) and the splicing end (2) are provided with mating hole grooves (708). A guide strip (705) is fixedly connected to the middle of the side of the connecting end (1). A splicing pressure strip (706) is fixedly connected to the middle of the side of the splicing end (2). A guide groove (707) is provided on the side of the splicing pressure strip (706). A rubber strip (702) is fixedly connected to the inner side of each trapezoidal long groove (701). A rubber strip groove (704) is provided on the side of each trapezoidal splicing strip (703). Both the connecting end (1) and the splicing end (2) have trapezoidal long grooves (701) on their sides. The trapezoidal long grooves (701) on the connecting end (1) correspond to the positions of the trapezoidal splicing strips (703) fixed on the side of the splicing end (2).

2. The waterproof coaxial cable connection device according to claim 1, characterized in that: The inner cylinder (303) is fixedly connected to the sliding ring (302), the outer shape of the fitting groove (307) and the fitting strip (304) are mutually fitted, the sliding groove (309) is slidably connected to the sliding ring (302), and the rotating shaft handle (301) is threadedly connected to the connecting end (1) or the splicing end (2).

3. The waterproof coaxial cable connection device according to claim 2, characterized in that: The fixed-line sealing structure (5) includes a grooved connecting end (501) and a convex ring connecting end (502). A cable sheath (505) is fixedly connected to the inner rear end of the grooved connecting end (501) or the convex ring connecting end (502). Multiple spring pressure plates (506) are fixedly connected to the outer wall of each cable sheath (505). A compression ring (504) is provided on the outer side of the spring pressure plate (506). A short threaded ring (503) is fixedly connected to the end of the connecting end (1) or the splicing end (2). A sealing groove (507) is opened on the side of the grooved connecting end (501). A threaded convex ring (508) is fixedly connected to the side of the splicing end (2).

4. The waterproof coaxial cable connection device according to claim 3, characterized in that: The groove end (501) or the convex ring end (502) is threadedly connected to the rotating shaft handle (301) on the same side, the extrusion ring (504) is fixedly connected to the inner wall of the rotating shaft handle (301), and the threaded convex ring (508) is threadedly connected to the sealing groove (507).

5. The waterproof coaxial cable connection device according to claim 4, characterized in that: The energized structure (6) includes a solid core shell (601) and an insulating cover (606). An insulating ring (603) is fixedly connected to the side of the solid core shell (601). Multiple equally spaced electrical contact pieces (602) are fixedly connected to the side of the insulating ring (603). Multiple wire tubes (604) are fixedly connected to the side of the insulating ring (603) away from the electrical contact pieces (602). A core insert (605) is fixedly connected to the axis of the solid core shell (601). The core shell (601) is fixedly connected to the groove end (501).

6. The waterproof coaxial cable connection device according to claim 5, characterized in that: An electrical clip (608) is fixedly connected inside the insulating cover (606), and a core rod (607) is fixedly connected at the axis of the insulating cover (606). Multiple wire tubes (604) are also provided on the side of the insulating cover (606) away from the solid core shell (601), and each wire tube (604) is fixedly connected to the electrical clip (608). The insulating cover (606) is fixedly connected to the convex ring end (502).

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