Self-locking anti-loosening device for cable connection

Abstract

The utility model relates to the technical field of cable connection, and discloses a self-locking anti-loosening device for cable connection, which comprises a female head, two opposite ends of the female head are detachably and electrically connected with male heads respectively, an accommodating cavity is formed in the female head along the axial direction of the female head, and at least one conductive contact ring is arranged in the accommodating cavity. At least one elastic annular piece is further arranged in the containing cavity. The male head comprises a first shaft section and a second shaft section which are connected end to end, the first shaft section is located in the containing cavity and penetrates through the elastic annular piece and the conductive contact finger ring, the outer wall of the first shaft section is in interference fit with the inner ring of the elastic annular piece, and the outer wall of the first shaft section makes contact with the inner ring of the conductive contact finger ring; the second shaft section is used for being electrically connected with one end of a cable, so that electric connection between conductors of two cables is achieved, the male connector and the female connector can be quickly inserted, and the connector is suitable for occasions with short installation time requirements and quick power recovery.

Description

Technical Field

[0001] The utility model relates to the technical field of cable connection, in particular to a self-locking anti-loosening device for cable connection. Background Art

[0002] At present, the existing self-locking anti-loosening device for cable connection usually includes a female head, and the opposite ends of the female head are respectively detachably electrically connected with male heads, one end of one cable is electrically connected and fixed with one male head, and one end of another cable is electrically connected and fixed with another male head. However, the anti-loosening structure between the female head and the male head of the existing self-locking anti-loosening device for cable connection is usually a threaded connection between the male head and the female head. Because the threaded connection between the male head and the female head has a spiral stroke, the purpose of quick plugging between the male head and the female head cannot be achieved, making the self-locking anti-loosening device for cable connection unsuitable for occasions of quick power restoration. Utility Model Content

[0003] One of the main purposes of the utility model is to provide a self-locking and anti-loosening device for cable connection, aiming to solve the technical problem that the anti-loosening structure between the female head and the male head of the existing self-locking and anti-loosening device for cable connection is usually a threaded connection between the male head and the female head. Since the threaded connection between the male head and the female head has a spiral stroke, the male head and the female head cannot be quickly plugged in.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a self-locking and anti-loosening device for cable connection, comprising a female head, wherein the opposite two ends of the female head are respectively and detachably electrically connected with a male head, an accommodating cavity is opened in the female head along its own axial direction, at least one conductive contact finger ring is arranged in the accommodating cavity, and at least one elastic ring-shaped member is also arranged in the accommodating cavity; the male head comprises a first shaft segment and a second shaft segment connected end to end, the first shaft segment is located in the accommodating cavity, the first shaft segment is penetrated by the elastic ring-shaped member and the conductive contact finger ring, the outer wall of the first shaft segment is interference fit with the inner ring of the elastic ring-shaped member, and the outer wall of the first shaft segment is in contact with the inner ring of the conductive contact finger ring; the second shaft segment is used to be electrically connected to one end of the cable.

[0005] Furthermore, the outer wall of the first shaft segment is interference fit with the inner ring of the conductive contact finger ring.

[0006] Furthermore, the conductive contact finger ring is provided with a first fracture penetrating through the inner and outer rings thereof.

[0007] Furthermore, the elastic annular member is provided with a second fracture penetrating through the inner and outer rings thereof.

[0008] Further, a guide structure is provided at the end of the first shaft segment facing away from the second shaft segment, and the guide structure is used to guide the first shaft segment to be inserted into the conductive contact ring and the elastic ring.

[0009] Furthermore, tapered guide grooves are provided at opposite ends of the accommodating cavity, and a slope adapted to the tapered guide grooves is provided at a connection between the first shaft segment and the second shaft segment.

[0010] Furthermore, an isolation portion is provided in the accommodating cavity to isolate the two male connectors connected to the opposite ends of the female connector.

[0011] Furthermore, two of the conductive finger rings and two of the elastic rings are provided, and the two conductive finger rings are located between the two elastic rings.

[0012] Furthermore, a first limiting groove adapted to the elastic ring-shaped member is opened in the accommodating cavity along its circumference, and a second limiting groove adapted to the elastic ring-shaped member is opened on the outer wall of the first shaft segment along its circumference, the first limiting groove corresponds to the second limiting groove one by one, the elastic ring-shaped member is sleeved on the first shaft segment, and the elastic ring-shaped member is located in the first limiting groove and the second limiting groove.

[0013] Furthermore, a mounting groove for mounting the conductive contact finger ring is provided in the accommodating cavity along its circumference.

[0014] Compared with the prior art, the self-locking and anti-loosening device for cable connection of the utility model has the following beneficial effects:

[0015] When the self-locking anti-loosening device for cable connection of the utility model is used, one end of one cable is electrically connected and fixed with the second shaft section of the male head on the first end of the female head, and one end of the other cable is electrically connected and fixed with the second shaft section of the male head on the second end of the female head. Since the first shaft section of the male head is inserted into the accommodating cavity of the female head, and the first shaft section of the male head is inserted through the conductive contact finger ring, the male head is electrically connected with the female head through the conductive contact finger ring, so that the power transmission between the two cables is realized; in addition, since the first shaft section of the male head is inserted into the elastic ring part, and the first shaft section of the male head is interference fit with the elastic ring part in the accommodating cavity of the female head, it is possible to prevent the female head from being loosened from the male head. In summary, when it is necessary to connect the male head with the female head, it is only necessary to hold the second shaft section of the male head, and insert the first shaft section into the conductive contact finger ring and the elastic ring part along the axial direction of the male head, so that the purpose of quick plug-in can be achieved between the male head and the female head of the utility model, and it is suitable for occasions requiring short installation time and quick power restoration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of the self-locking and anti-loosening device for cable connection of the utility model;

[0017] Figure 2 It is a cross-sectional view of the self-locking and anti-loosening device for cable connection of the utility model;

[0018] Figure 3 This is a cross-sectional view of a female plug according to an embodiment of the utility model;

[0019] Figure 4 This is a cross-sectional view of an embodiment of the utility model in which the elastic annular member and the conductive contact finger ring are installed in the female head;

[0020] Figure 5 This is a cross-sectional view of a male plug according to an embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of a conductive finger ring according to an embodiment of the utility model;

[0022] Figure 7 This is a schematic structural diagram of an elastic annular member according to an embodiment of the utility model.

[0023] Reference numerals in the accompanying drawings:

[0024] 1. Female connector; 10. Accommodating cavity; 11. Mounting groove; 12. First limiting groove; 13. Isolation portion; 14. Conical guide groove; 2. Male connector; 21. First shaft section; 210. Second limiting groove; 211. Guide structure; 212. Slope; 22. Second shaft section; 220. Threaded hole; 221. Anti-slip structure; 3. Conductive finger ring; 30. First fracture; 4. Elastic ring member; 40. Second fracture; 5. Bolt. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the description of the present invention, it should be understood that the terms "width", "up", "down", "front", "back", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation on the present invention.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] Please refer to Figure 1-Figure 7 The utility model provides a self-locking anti-loosening device for cable connection, including a female head 1, and the opposite two ends of the female head 1 are respectively detachably electrically connected with a male head 2. A receiving cavity 10 is opened in the female head 1 along its own axial direction. Specifically, it can be understood that the female head 1 is a cylindrical structure, and the opposite two ends of the female head 1 are open structures. Among them, at least one conductive contact finger ring 3 is arranged in the receiving cavity 10, and at least one elastic ring member 4 is also arranged in the receiving cavity 10; the male head 2 includes a first shaft section 21 and a second shaft section 22 connected end to end, the first shaft section 21 is located in the receiving cavity 10, the first shaft section 21 is passed through the elastic ring member 4 and the conductive contact finger ring 3, the conductive contact finger ring 3 is coaxially arranged with the receiving cavity 10, the elastic ring member 4 is coaxially arranged with the conductive contact finger ring 3, the outer wall of the first shaft section 21 is interference fit with the inner ring of the elastic ring member 4, and the outer wall of the first shaft section 21 is in contact with the inner ring of the conductive contact finger ring 3; the second shaft section 22 is used to be electrically connected to one end of the cable. Among them, the accommodating cavity 10 is used to accommodate the first shaft segment 21 of the male head 2, the inner diameter of the accommodating cavity 10 is larger than the outer diameter of the first shaft segment 21, and the gap between the outer wall of the first shaft segment 21 and the inner wall of the accommodating cavity 10 is preferably 0.2-1mm. In this embodiment, the gap between the outer wall of the first shaft segment 21 and the inner wall of the accommodating cavity 10 is 0.2mm; in other embodiments, the gap between the outer wall of the first shaft segment 21 and the inner wall of the accommodating cavity 10 is 1mm.

[0030] Of course, an isolation part 13 is also provided in the accommodating cavity 10. The isolation part 13 isolates the two male connectors 2 connected to the opposite ends of the female connector 1. The isolation part 13 can prevent the water vapor of the wire core of one cable from being transmitted along the axial direction of the female connector 1 to the direction of the other cable. In order to ensure the service life of the isolation part 13, the isolation part 13 can play a long-term and effective physical partition. The thickness of the isolation part 13 is preferably 4-10 mm. Specifically, the thickness of the isolation part 13 in this embodiment is 4 mm; in other embodiments, the thickness of the isolation part 13 is preferably 10 mm.

[0031] When the self-locking anti-loosening device for cable connection of the utility model is used, one end of one cable is electrically connected and fixed to the second shaft section 22 of the male connector 2 on the first end of the female connector 1, and one end of the other cable is electrically connected and fixed to the second shaft section 22 of the male connector 2 on the second end of the female connector 1. Since the first shaft section 21 of the male connector 2 is inserted into the accommodating cavity 10 of the female connector 1, and the first shaft section 21 of the male connector 2 is inserted through the conductive contact finger ring 3, the male connector 2 is electrically connected to the female connector 1 through the conductive contact finger ring 3, so that power transmission between the two cables is realized. In addition, since the first shaft section 21 of the male connector 2 is inserted through the elastic ring member 4, and the first shaft section 21 of the male connector 2 is interference fit with the elastic ring member 4 in the accommodating cavity 10 of the female connector 1, loosening between the female connector 1 and the male connector 2 can be prevented.

[0032] In summary, when the male connector 2 needs to be connected to the female connector 1, it is only necessary to hold the second shaft segment 22 of the male connector 2, and insert the first shaft segment 21 into the conductive contact ring 3 and the elastic ring member 4 along the axial direction of the male connector 2, so that the male connector 2 and the female connector 1 can be quickly plugged in. Compared with the existing self-locking anti-loosening device for cable connection, which adopts a threaded connection locking and anti-loosening structure between the male connector 2 and the female connector 1, the self-locking anti-loosening device for cable connection of the utility model is more suitable for occasions requiring short installation time and quick power restoration.

[0033] In one embodiment, referring to Figure 5 The second shaft section 22 is a hollow structure, and the open end of the second shaft section 22 is a cable insertion port, which faces away from the first shaft section 21. A plurality of threaded holes 220 are also provided on the outer wall of the second shaft section 22, and the threaded holes 220 are connected with the inner cavity of the second shaft section 22. When it is necessary to connect the cable to the male connector 2, one end of the cable is inserted into the inner cavity of the second shaft section 22 through the cable insertion port, and then the bolt 5 is threadedly connected with the threaded hole 220, and the bolt 5 is pressed against the cable in the inner cavity of the second shaft section 22, thereby locking the cable in the second shaft section 22. In addition, referring to Figure 5 The inner cavity of the second shaft section 22 is provided with an anti-skid structure 221, which is an anti-skid thread opened on the inner wall of the inner cavity of the second shaft section 22, and is used to increase the friction between the cable and the inner wall of the inner cavity of the second shaft section 22, and further prevent the cable from escaping from the inner cavity of the second shaft section 22. Of course, in order to provide a reliable locking force and prevent loosening, the connection position between the bolt 5 and the cable core can be ground flat, and the connection thread on the male head 2 and the bolt 5 can be designed as an English fine thread.

[0034] It should be noted that the number of bolts 5 and threaded holes 220 corresponds one to one, and the bolts 5 are used to electrically connect the conductor of the cable to the male connector 2. The number and size of the bolts 5 are selected according to the principle that the larger the cross-sectional area of ​​the cable, the more bolts 5 are arranged; the larger the cross-sectional area of ​​the cable, the larger the size of the bolts 5. The bolts 5 can be reasonably changed according to the cross-sectional area of ​​the cable, and are not limited here.

[0035] In one embodiment, referring to Figure 5 The end of the first shaft section 21 facing away from the second shaft section 22 is provided with a guide structure 211, and the guide structure 211 is used to guide the first shaft section 21 to insert into the conductive contact finger ring 3 and the elastic ring member 4. Under the action of the guide structure 211, the male plug 2 can quickly and smoothly pass through the conductive contact finger ring 3 and the elastic ring member 4. Specifically, the guide structure 211 includes but is not limited to a rounded corner structure or a chamfered corner structure of the end surface edge of the first shaft section 21 facing away from the second shaft section 22, wherein the size of the rounded corner structure is preferably R3-R5mm, and the size of the chamfered corner structure is preferably 3-5mm; if the guide structure 211 is a rounded corner structure, the size of the rounded corner structure in this embodiment is R3mm; in other embodiments, the size of the rounded corner structure is R5mm; if the guide structure 211 is a chamfered corner structure, the size of the chamfered corner structure in this embodiment is 3mm; in other embodiments, the size of the chamfered corner structure is 5mm.

[0036] In one embodiment, the outer wall of the first shaft segment 21 is interference fit with the inner ring of the conductive contact finger ring 3, which can further prevent the male connector 2 from loosening from the female connector 1. Specifically, the outer diameter of the first shaft segment 21 is larger than the inner diameter of the conductive contact finger ring 3 to achieve an interference fit between the first shaft segment 21 and the conductive contact finger ring 3; wherein the interference between the first shaft segment 21 and the conductive contact finger ring 3 is preferably 1-4mm, and in this embodiment, the interference between the first shaft segment 21 and the conductive contact finger ring 3 is 1mm, and in other embodiments, the interference between the first shaft segment 21 and the conductive contact finger ring 3 is 4mm. In summary, it can be understood that the self-locking anti-loosening device for cable connection of the utility model ensures that the male connector 2 and the female connector 1 will not loosen by achieving an interference fit between the first shaft segment 21 of the male connector 2 and the elastic ring 4 and the conductive contact finger ring 3.

[0037] Of course, in order to prevent the interference fit between the first shaft section 21 of the male connector 2 and the elastic ring 4 and the conductive contact finger ring 3, which will increase the installation resistance between the male connector 2 and the female connector 1, in order to prevent the installation resistance from being too large, resulting in a difficult installation or even impossible installation, refer to Figure 6In this embodiment, a first break 30 is provided on the conductive contact finger ring 3, which runs through the inner and outer rings of the conductive contact finger ring 3, that is, the first break 30 runs through the inner and outer rings of the conductive contact finger ring 3, so that the conductive contact finger ring 3 has a certain elastic deformation ability. Among them, the angle range of the first break 30 can be 3 to 10°. In summary, it can be understood that when the first shaft segment 21 passes through the conductive contact finger ring 3, under the force exerted by the outer wall of the first shaft segment 21 on the inner ring of the conductive contact finger ring 3, the first break 30 of the conductive contact finger ring 3 will open slightly, so that the conductive contact finger ring 3 has a clamping force on the outer wall of the first shaft segment 21, thereby achieving locking between the female head 1 and the male head 2, further preventing the female head 1 and the male head 2 from loosening, and at the same time, it can also ensure that the first shaft segment 21 of the male head 2 is in close contact with the conductive contact finger ring 3 and the current carrying capacity meets the requirements.

[0038] In one embodiment, referring to Figure 1 , Figure 3 and Figure 4 The accommodating cavity 10 is provided with an installation groove 11 for installing the conductive contact finger ring 3 along its circumferential direction, and the installation groove 11 can facilitate the installation and fixation of the conductive contact finger ring 3. Specifically, the inner diameter of the installation groove 11 is smaller than the outer diameter of the conductive contact finger ring 3 in a relaxed state (the conductive contact finger ring 3 in a relaxed state refers to the state in which the conductive contact finger ring 3 is not clamped with the first shaft section 21), so as to achieve interference fit between the installation groove 11 and the conductive contact finger ring 3, so as to prevent the conductive contact finger ring 3 from being separated from the installation groove 11.

[0039] In one embodiment, referring to Figure 1 , Figure 3 and Figure 4 , a first limiting groove 12 adapted to the elastic ring 4 is provided in the accommodating cavity 10 along its own circumference, and a second limiting groove 210 adapted to the elastic ring 4 is provided on the outer wall of the first shaft section 21 along its own circumference, the first limiting groove 12 corresponds to the second limiting groove 210, the elastic ring 4 is sleeved on the first shaft section 21, and the elastic ring 4 is located in the first limiting groove 12 and the second limiting groove 210. Specifically, it can be understood that the inner diameter of the first limiting groove 12 is slightly smaller than the outer diameter of the elastic ring 4, and the outer diameter of the second limiting groove 210 is slightly larger than the inner diameter of the elastic ring 4 in a relaxed state (referring to the state in which the elastic ring 4 is not self-locking the first shaft section 21), so that the elastic ring 4 is located in the first limiting groove 12 and the second limiting groove 210 on opposite sides of the radial direction when the male head 2 and the female head 1 are locked by the squeezing force of the elastic ring 4 on the outer wall of the first shaft section 21.

[0040] In one embodiment, referring to Figure 7The elastic ring 4 is provided with a second break 40 that penetrates the inner and outer rings thereof, that is, the second break 40 penetrates the inner and outer rings of the elastic ring 4, so that the first shaft section 21 of the male head 2 can more conveniently pass through the elastic ring 4. Specifically, the angle range of the second break 40 can be 3 to 10 degrees. The second break 40 is a space for the elastic ring 4 to be squeezed and deformed by force. When the first shaft section 21 passes through the elastic ring 4, the elastic ring 4 is stretched and deformed by force. When the first shaft section 21 is plugged into place, the elastic ring 4 is fixed between the first limiting groove 12 and the second limiting groove 210, and the interference of the elastic ring 4 disappears, and the stress deformation shrinks to the relaxed state, while realizing the self-locking and anti-loosening function.

[0041] In one embodiment, illustratively, there are two conductive finger rings 3 and two elastic rings 4, and the two conductive finger rings 3 are located between the two elastic rings 4, that is, it can be understood that when the male connector 2 and the female connector 1 are connected and locked, the two elastic rings 4 are respectively located at opposite ends of the outer wall of the first shaft section 21, and the two conductive finger rings 3 are located in the middle of the outer wall of the first shaft section 21, so that the male connector 2 and the female connector 1 can be further prevented from being loosened. Of course, in other embodiments, the conductive finger rings 3 and the elastic rings 4 can also be set to three or four, which is not limited here, that is, the number of conductive finger rings 3 and the elastic rings 4 can be reasonably changed according to the specifications of different cables.

[0042] It should be noted that the circumferential surface of the first shaft section 21 of the male connector 2 is a current flow surface for transmitting current, and its effective cross-sectional area should not be less than the cross-sectional area of ​​a connecting pipe of the same specification as specified in GB / T 14315.

[0043] In one embodiment, referring to Figure 1-Figure 3 Conical guide grooves 14 are provided at opposite ends of the accommodating cavity 10, the large end of the conical guide groove 14 is close to the second shaft segment 22, the small end of the conical guide groove 14 is close to the isolation portion 13, the outer diameter of the first shaft segment 21 is smaller than the outer diameter of the second shaft segment 22, and a slope 212 adapted to the conical guide groove 14 is provided at the connection between the first shaft segment 21 and the second shaft segment 22. Through the cooperation of the slope 212 and the conical guide groove 14, the fit between the male head 2 and the female head 1 can be improved, and dust, impurities, etc. outside the female head 1 can be effectively prevented from entering the accommodating cavity 10 through the gap between the female head 1 and the second shaft segment 22.

[0044] In one embodiment, in order to meet the current carrying capacity requirements of the cable conductor and ensure that it can resist electrochemical corrosion during use, the female head 1 is made of copper or aluminum material, and the male head 2 is made of copper or aluminum material. The specific selection should be consistent with the actual cable conductor used. In order to prevent electrochemical corrosion or oxidation during use, the surfaces of the female head 1 and the male head 2 can be electroplated or conductively passivated; the elastic ring part 4 is preferably made of spring steel, and the surface of the elastic ring part 4 is subjected to anti-oxidation treatment. After the elastic ring part 4 is formed, it is demagnetized to prevent eddy current heating during use; the conductive finger ring 3 is preferably made of beryllium bronze or chromium zirconium copper, and the surface is plated with tin or silver, and the coating thickness is 2-5um; the bolt 5 is preferably made of stainless steel.

[0045] In summary, the self-locking and anti-loosening device for cable connection of the utility model can realize quick plug-in between the male head 2 and the female head 1, is easy to install, takes a short time, and the conductive performance between the female head 1, the cable and the male head 2 is stable and reliable, which is suitable for occasions requiring short installation time and fast power restoration.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-locking anti-loosening device for cable connection, comprising a female connector, wherein the opposite ends of the female connector are detachably and electrically connected to male connectors, and characterized in that: The female connector has an accommodating cavity along its axial direction, at least one conductive contact finger ring is arranged in the accommodating cavity, and at least one elastic ring member is also arranged in the accommodating cavity; the male connector includes a first shaft segment and a second shaft segment connected end to end, the first shaft segment is located in the accommodating cavity, the first shaft segment is passed through the elastic ring member and the conductive contact finger ring, the outer wall of the first shaft segment is interference fit with the inner ring of the elastic ring member, and the outer wall of the first shaft segment is in contact with the inner ring of the conductive contact finger ring; the second shaft segment is used to be electrically connected to one end of the cable.

2. The self-locking anti-loosening device for cable connection according to claim 1, characterized in that: The outer wall of the first shaft segment is interference-fitted with the inner ring of the conductive contact finger ring.

3. The self-locking anti-loosening device for cable connection according to claim 1 or 2, characterized in that: The conductive contact finger ring is provided with a first fracture penetrating through the inner and outer rings thereof.

4. The self-locking anti-loosening device for cable connection according to claim 1, characterized in that: The elastic annular component is provided with a second fracture which penetrates through the inner and outer rings thereof.

5. The self-locking anti-loosening device for cable connection according to claim 1, characterized in that: A guide structure is provided at the end of the first shaft segment facing away from the second shaft segment, and the guide structure is used to guide the first shaft segment to be inserted into the conductive contact finger ring and the elastic ring.

6. The self-locking anti-loosening device for cable connection according to claim 1, characterized in that: Conical guide grooves are arranged at opposite ends of the accommodating cavity, and a slope adapted to the conical guide grooves is arranged at the connection between the first shaft section and the second shaft section.

7. The self-locking anti-loosening device for cable connection according to claim 1, characterized in that: An isolation portion is also provided in the accommodating cavity to isolate the two male connectors at opposite ends of the female connector.

8. The self-locking anti-loosening device for cable connection according to claim 1, characterized in that: There are two conductive finger rings and two elastic rings, and the two conductive finger rings are located between the two elastic rings.

9. The self-locking anti-loosening device for cable connection according to claim 1 or 8, characterized in that: A first limiting groove adapted to the elastic ring-shaped member is opened in the accommodating cavity along its circumference, and a second limiting groove adapted to the elastic ring-shaped member is opened on the outer wall of the first shaft segment along its circumference, the first limiting groove corresponds to the second limiting groove one by one, the elastic ring-shaped member is sleeved on the first shaft segment, and the elastic ring-shaped member is located in the first limiting groove and the second limiting groove.

10. The self-locking anti-loosening device for cable connection according to claim 1, characterized in that: An installation groove for installing the conductive contact ring is provided in the accommodating cavity along its circumference.

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