A cable connector with self-locking function

Abstract

The application provides a cable connector with a self-locking function applied to the field of cable connectors, which comprises a female connector and a male connector, the female connector is internally provided with a clamping assembly, the clamping assembly is composed of two groups of half ring pipes, one end of each half ring pipe is fixed with an execution half ring block, the half ring pipe is internally provided with a half round electric core sleeve and an anti-falling protrusion, the male connector is internally provided with an electric core column and an anti-falling groove; the male connector is internally provided with a self-locking pipe and a tensioning disc. The application utilizes compression and release of the tensioning spring, cooperates with the guidance of the guide groove, realizes clamping self-locking of the anti-falling protrusion, adopts a mechanical engagement mode of the anti-falling protrusion and the anti-falling groove, combines the clamping force of the half ring pipe, can bear a larger axial pull-off force, compared with a traditional buckle type connector, can effectively prevent vibration and falling, simultaneously adopts a clamping butt joint mode, can effectively reduce the friction force between the half round electric core sleeve and the electric core column, and improves the service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cable connectors, in particular to a cable connector with self-locking function. BACKGROUND

[0002] The cable connector is a component for realizing electrical connection between cables and devices, cables and cables, and its main functions include transmission of power, signals or data, as well as providing protection against water, dust and vibration.

[0003] In modern electrical systems, the reliability of cable connectors directly affects the safety of equipment operation. Traditional connectors generally use spring buckles or threaded connectors, which are prone to loosening in a vibrating environment, leading to poor contact. Moreover, the existing connector terminals use hard friction insertion, which may cause contact failure due to excessive wear after repeated use.

[0004] Therefore, a cable connector with self-locking function is proposed. SUMMARY

[0005] The present application aims to solve the technical problems of poor stability and low operation efficiency of traditional connectors, and provides a cable connector with self-locking function compared with the prior art, which comprises a connecting female head and a connecting male head. The connecting female head is provided with a plurality of equal-angle evenly arranged embracing components. The embracing components are composed of two groups of symmetrically slidingly connected half-ring pipes. One end of the half-ring pipe is fixed with an execution half-ring block. The inner side of the half-ring pipe is fixed with a semicircular electric core sleeve. The semicircular electric core sleeve is provided with a anti-falling protrusion. The connecting male head is provided with an electric core column corresponding to the embracing component. The electric core column is provided with an anti-falling groove matched with the anti-falling protrusion.

[0006] The far side of the two groups of half-ring pipes is fixed with an elastic diaphragm. The elastic diaphragm has an elastic force to drive the two groups of half-ring pipes to move away from each other. The opposite side of the two groups of half-ring pipes is also glued with a sealing diaphragm.

[0007] The connecting male head is provided with a self-locking pipe. The self-locking pipe is used to press the two groups of execution half-ring blocks to move close to each other and make the two groups of half-ring pipes move close to each other synchronously when the connecting female head and the connecting male head are closed. The connecting male head is also provided with a tension disc. The tension disc is used to provide circumferential support force for the self-locking pipe.

[0008] Further, the connecting female head comprises a butt joint base. The butt joint base is provided with a straight slot corresponding to the embracing component. The end of the elastic diaphragm away from the half-ring pipe is fixed on the inner wall of the straight slot.

[0009] The straight slot is also provided with symmetrically arranged guide rails. The two sides of the half-ring pipe are symmetrically provided with sliding grooves matched with the guide rails.

[0010] Further, the semi-tube and the execution semi-ring block are further fixed with a sealing baffle, and the end of the docking base is detachably fixed with an end cover plate, and the side opposite to the straight slot of the end cover plate is respectively provided with a sealing groove two and a sealing groove one corresponding to the sealing baffle;

[0011] The side opposite to the sealing groove two and the sealing groove one is respectively fixed with a sealing ring two and a sealing ring one, and the two sides of the sealing baffle are respectively in abutment with the sealing ring two and the sealing ring one;

[0012] The end of the execution semi-ring block away from the semi-tube extends through the sealing groove two and extends to the side of the end cover plate away from the docking base.

[0013] Further, the end of the two groups of semi-tubes away from the execution semi-ring block is respectively provided with a rhombic movable force arm and a terminal, and the movable force arms are fixed with a reset spring, and the reset spring has a spring force for driving the two groups of semi-tubes to be far away from each other.

[0014] Further, the connecting female head is further provided with an outer ring insertion slot, the connecting male head is provided with a docking outer tube matched with the outer ring insertion slot, the inner side of the docking outer tube is provided with a foolproof groove, the outer ring insertion slot is provided with a foolproof strip matched with the foolproof groove, and the outer ring insertion slot is further fixed with a waterproof sealing gasket.

[0015] Further, the connecting female head is further provided with an inner ring insertion slot between the outer ring insertion slot and the docking base, and the inner ring insertion slot is matched with a self-locking tube;

[0016] The self-locking tube is fixed on one side of a tensioning disc, the tensioning disc is limitingly rotatably connected in the connecting male head, a plurality of equidistantly and evenly arranged tensioning springs are fixed between the tensioning disc and the connecting male head, the outer wall of the self-locking tube is provided with a plurality of equi-angle arranged guide grooves, and the port side of the inner ring insertion slot is provided with a ball matched with the guide grooves;

[0017] The tensioning disc is further provided with an execution groove on the inner side of the self-locking tube.

[0018] Further, the guide grooves include a spiral groove one and a spiral groove two communicated with the spiral groove one, and the side of the spiral groove two away from the spiral groove one is communicated with an arc-shaped groove;

[0019] The execution groove includes a petal-shaped outer groove wall and a petal-shaped inner groove wall, the maximum distance between the petal-shaped outer groove wall and the petal-shaped inner groove wall is equal to the maximum distance between the execution semi-ring blocks when the execution semi-ring blocks are far away from each other, and the minimum distance between the petal-shaped outer groove wall and the petal-shaped inner groove wall is equal to the maximum distance between the execution semi-ring blocks when the execution semi-ring blocks are in abutment;

[0020] The curve nodes of the petal-shaped outer groove wall and the petal-shaped inner groove wall are respectively provided with arc-shaped grooves, and the groove radius of the arc-shaped grooves is equal to the outer radius of the execution semi-ring block.

[0021] Further, four groups of arc-shaped through grooves two are arranged at equal angles in the tension disc, one end of the cell column extends through the arc-shaped through grooves two and is electrically connected with the external cable;

[0022] The side of the tension disc away from the self-locking pipe is provided with four groups of connecting rods arranged at equal angles, the connecting male head is provided with arc-shaped through grooves one matched with the connecting rods, one end of the connecting rod extends through the arc-shaped through grooves one to the outer wall of the connecting male head and is fixed with a reset bracelet.

[0023] Further, in the free state of the tension spring, the port of the spiral groove one is arranged opposite to the ball, the interval of the two end points of the spiral groove one in the axial direction of the self-locking pipe is equal to the interval of the end face of the self-locking pipe and the end face of the execution groove in the axial direction;

[0024] The interval of the two end points of the spiral groove two and the arc-shaped groove in the axial direction of the self-locking pipe is equal to the groove depth of the execution groove;

[0025] The arc length of the projection plane of the two end points of the spiral groove one in the direction perpendicular to the axial direction of the self-locking pipe is equal to the total arc length of the projection plane of the spiral groove two and the arc-shaped groove in the direction perpendicular to the axial direction of the self-locking pipe;

[0026] The axial line of the arc-shaped groove is coaxially arranged with the axial line of the self-locking pipe.

[0027] Further, when the ball is displaced from the port of the spiral groove one to the connecting node of the spiral groove one and the spiral groove two, the tension spring changes from the free state to the compressed maximum stroke state; when the ball and the spiral groove two are displaced into the arc-shaped groove, the tension spring changes from the compressed state to the released state.

[0028] Compared with the prior art, the application has the following advantages:

[0029] The connecting female head and the connecting male head of the application can realize the self-locking of the anti-extrusion block by the compression and release of the tension spring and the guidance of the guide groove, adopt the mechanical engagement mode of the anti-extrusion block and the anti-extrusion groove, and combine the clamping force of the half-ring pipe to bear a larger axial pull-off force. Compared with the traditional buckle connector, the application can effectively prevent vibration and falling off. Since the application adopts the butt joint mode of the half-round electric core sleeve clamping the electric core column, compared with the traditional hard insertion mode, the application can effectively reduce the friction between the half-round electric core sleeve and the electric core column, and effectively avoid the phenomenon of poor contact caused by excessive friction. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the application;

[0031] Figure 2 It is a schematic diagram of the port surface structure of the connecting female head and the connecting male head in the application;

[0032] Figure 3 The exploded view of the female connector proposed in the present application;

[0033] Figure 4 The exploded view of the embracing assembly proposed in the present application;

[0034] Figure 5 The structural view of the diamond-shaped movable force arm proposed in the present application;

[0035] Figure 6 The structural view of the end cover plate proposed in the present application;

[0036] Figure 7 The structural view of the docking base proposed in the present application;

[0037] Figure 8 The exploded view of the male connector proposed in the present application;

[0038] Figure 9 The structural view of the execution groove proposed in the present application;

[0039] Figure 10 The structural view of the self-locking tube and the tensioning disc proposed in the present application;

[0040] Figure 11 The bottom structural view of the self-locking tube and the tensioning disc proposed in the present application;

[0041] Figure 12 The cross-sectional structural view of the female connector and the male connector when they are not mated proposed in the present application;

[0042] Figure 13 The cross-sectional structural view of the female connector and the male connector when they are mated proposed in the present application.

[0043] Explanation of the figure:

[0044] 1, female connector; 11, outer ring slot; 111, foolproof strip; 12, inner ring slot; 121, ball; 13, docking base; 14, straight slot; 15, waterproof sealing gasket; 141, sealing groove one; 142, sealing ring one; 143, guide rail;

[0045] 2, male connector; 21, docking outer tube; 211, foolproof slot; 22, electric core column; 221, anti-dropping groove; 23, arc-shaped through slot one;

[0046] 3, end cover plate; 31, sealing groove two; 32, sealing ring two;

[0047] 4, holding assembly; 401, sealing diaphragm; 402, rhombic movable force arm; 403, reset spring; 41, half ring pipe; 411, sliding groove; 412, terminal; 42, elastic diaphragm; 43, sealing baffle; 44, execution half ring block; 45, half round electric core sleeve; 451, anti-falling bump;

[0048] 6, self-locking pipe; 61, guide groove; 611, spiral groove one; 612, spiral groove two; 613, arc-shaped groove;

[0049] 7, tensioning disc; 701, arc-shaped groove; 71, execution groove; 711, petal-shaped outer groove wall; 712, petal-shaped inner groove wall; 72, arc-shaped through groove two; 73, connecting rod; 74, reset bracelet;

[0050] 8, tensioning spring. DETAILED DESCRIPTION

[0051] The embodiments will be described in conjunction with the drawings in the specification, and all other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor shall fall within the scope of protection of the present application.

[0052] Embodiments:

[0053] The present application provides a cable connector with self-locking function, please refer to Figures 1-13 , comprising a female connector 1 and a male connector 2, a plurality of equiangularly and evenly arranged holding assemblies 4 are arranged in the female connector 1, the holding assembly 4 is composed of two groups of symmetrically slidingly connected half ring pipes 41, one end of the half ring pipe 41 is fixed with an execution half ring block 44, the inner side of the half ring pipe 41 is fixed with a half round electric core sleeve 45, the half round electric core sleeve 45 is provided with an anti-falling bump 451, the male connector 2 is provided with an electric core column 22 corresponding to the holding assembly 4, the electric core column 22 is provided with an anti-falling groove 221 matched with the anti-falling bump 451, and a mechanical locking structure is formed by the anti-falling bump 451 and the anti-falling groove 221;

[0054] Please refer to Figures 4-5, the far side of the two groups of half ring pipes 41 is fixed with an elastic diaphragm 42, the elastic diaphragm 42 has the elastic force of driving the two groups of half ring pipes 41 away from each other, in order to further improve the reset ability of the half ring pipe 41, the end of the two groups of half ring pipes 41 away from the half ring block 44 is provided with a rhombic movable force arm 402 and a terminal 412, one side of the rhombic movable force arm 402 is respectively connected with the corresponding half ring pipe 41, the other side of the rhombic movable force arm 402 is fixed with a reset spring 403, the reset spring 403 has the elastic force of driving the two groups of half ring pipes 41 away from each other, the elastic diaphragm 42 and the reset spring 403 provide the elastic force of the half ring pipe 41 opening outward, ensure that the initial opening state is maintained when not plugged; when plugging, the self-locking pipe 6 of the connecting male head 2 presses the half ring block 44, so that the half ring pipe 41 is closed synchronously, and the electric core column 22 is clamped and locked.

[0055] The connecting male head 2 is provided with a self-locking pipe 6, the self-locking pipe 6 is used for pressing the two groups of half ring blocks 44 to be close to each other and making the two groups of half ring pipes 41 be closed relative to each other when the connecting female head 1 and the connecting male head 2 are combined, the connecting male head 2 is also provided with a tensioning disc 7, the tensioning disc 7 is used for providing the circumferential support force for the self-locking pipe 6.

[0056] Please refer to Figures 3-7 Further, the connecting female head 1 comprises a butt joint base 13, the butt joint base 13 is provided with a straight slot 14 corresponding to the clamping assembly 4, the end of the elastic diaphragm 42 away from the half ring pipe 41 is fixed on the inner wall of the straight slot 14.

[0057] The straight slot 14 is also provided with symmetrical guide rails 143, the two sides of the half ring pipe 41 are symmetrically provided with sliding grooves 411 matched with the guide rails 143.

[0058] Please refer to Figures 4-7 Wherein, in order to improve the sealing property between the two groups of half ring pipes 41, the opposite side of the two groups of half ring pipes 41 is also glued with a sealing diaphragm 401, which blocks the horizontal invasion of water and gas, the half ring pipe 41 and the half ring block 44 are also fixed with a sealing baffle 43, the end of the butt joint base 13 is detachably fixed with an end cover plate 3, the side of the end cover plate 3 opposite to the straight slot 14 is respectively provided with a sealing groove two 31 and a sealing groove one 141 corresponding to the sealing baffle 43; the side of the sealing groove two 31 opposite to the sealing groove one 141 is respectively fixed with a sealing ring two 32 and a sealing ring one 142, the two sides of the sealing baffle 43 are respectively in contact with the sealing ring two 32 and the sealing ring one 142, the butt joint base 13 and the end cover plate 3 are matched through the sealing ring one 142, the sealing ring two 32 and the sealing baffle 43, forming axial sealing;

[0059] Specifically, when the semi-tube 41 is closed, the glued sealing diaphragm 401 forms a ring-shaped sealing layer, which blocks the water vapor from invading from the gap between the battery column 22 and the semi-circular battery sleeve 45. The sealing diaphragm 401 is made of fluororubber material, with a thickness of 0.5 mm and a Shore hardness of 70A, and generates a contact pressure of ≥0.3 MPa when the semi-tube 41 is closed. When the sealing baffle 43 moves with the semi-tube 41, it extrudes the sealing ring one 142 and the sealing ring two 32 on both sides, forming double axial sealing. The sealing ring one 142 is made of perfluoroether rubber, with a temperature resistance range of -40℃~260℃ and a compression permanent deformation of ≤5% (150℃×70h). When the butt joint outer tube 21 is inserted into the outer ring insertion slot 11, it extrudes the waterproof sealing pad 15, forming an outer peripheral waterproof barrier. The waterproof sealing pad 15 is made of foam silica gel, with a density of 0.2g / cm³ and a resilience of ≥90%, which can fill a gap of ≤1mm.

[0060] Please refer to Figures 7-8 It should be noted that the execution semi-ring block 44 is inserted into the sealing groove two 31 and extends to the side of the end cover plate 3 away from the butt joint base 13. The female connector 1 is also provided with an outer ring insertion slot 11, and the male connector 2 is provided with a butt joint outer tube 21 matched with the outer ring insertion slot 11. The inner side of the butt joint outer tube 21 is provided with a foolproof groove 211, and the outer ring insertion slot 11 is provided with a foolproof strip 111 matched with the foolproof groove 211, which can prevent misinsertion. The outer ring insertion slot 11 is also fixed with a waterproof sealing pad 15, which realizes the butt joint sealing of the outer side of the connector.

[0061] Please refer to Figures 7-10 The female connector 1 is also provided with an inner ring insertion slot 12 between the outer ring insertion slot 11 and the butt joint base 13, which is matched with the self-locking tube 6. The self-locking tube 6 is fixed on one side of the tensioning disc 7, which is rotationally connected in the male connector 2. A plurality of equally spaced tensioning springs 8 are fixed between the tensioning disc 7 and the male connector 2. The outer wall of the self-locking tube 6 is provided with a plurality of equally angularly arranged guide grooves 61, and the port side of the inner ring insertion slot 12 is provided with a ball 121 matched with the guide grooves 61. The tensioning disc 7 is also provided with an execution groove 71 on the inner side of the self-locking tube 6. The guide grooves 61 on the outer wall of the self-locking tube 6 are matched with the ball 121 of the inner ring insertion slot 12. The circumferential rotation of the self-locking tube 6 is driven by the rotation of the tensioning disc 7, and the opening and closing of the semi-tube 41 is synchronously controlled by the execution groove 71.

[0062] Please refer to Figures 9-11It should be noted that the guide groove 61 comprises a spiral groove one 611 and a spiral groove two 612 connected with the spiral groove one 611, and the spiral groove two 612 is communicated with the arc-shaped groove 613 away from the spiral groove one 611; the execution groove 71 comprises a petal-shaped outer groove wall 711 and a petal-shaped inner groove wall 712, the maximum distance between the petal-shaped outer groove wall 711 and the petal-shaped inner groove wall 712 is equal to the maximum distance when the execution half-ring block 44 is far away, and the minimum distance between the petal-shaped outer groove wall 711 and the petal-shaped inner groove wall 712 is equal to the maximum distance when the execution half-ring block 44 is in contact; the curve nodes of the petal-shaped outer groove wall 711 and the petal-shaped inner groove wall 712 are all provided with arc-shaped grooves 701, and the groove radius of the arc-shaped grooves 701 is equal to the outside radius of the execution half-ring block 44.

[0063] Further, four groups of arc-shaped through grooves two 72 are arranged at equal angles in the tension disc 7, one end of the battery core column 22 extends through the arc-shaped through grooves two 72 and is electrically connected with the external cable; four groups of connecting rods 73 are arranged at equal angles in the tension disc 7 away from the self-locking pipe 6, the connecting male head 2 is provided with arc-shaped through grooves one 23 matched with the connecting rods 73, one end of the connecting rod 73 extends to the outer wall side of the connecting male head 2 through the arc-shaped through grooves one 23 and is fixed with a reset bracelet 74, and the tension disc 7 is manually rotated through the reset bracelet 74 to drive the self-locking pipe 6 to rotate reversely to complete the unlocking action.

[0064] Among them, in the free state, the port of the spiral groove one 611 is arranged opposite to the ball 121, the distance between the two end points of the spiral groove one 611 in the axis direction of the self-locking pipe 6 is equal to the distance between the end face of the self-locking pipe 6 and the end face of the execution groove 71 in the axis direction; the distance between the two end points of the spiral groove two 612 and the arc-shaped groove 613 in the axis direction of the self-locking pipe 6 is equal to the groove depth of the execution groove 71; the projection plane arc length of the two end points of the spiral groove one 611 in the direction perpendicular to the axis of the self-locking pipe 6 is equal to the total projection plane arc length of the spiral groove two 612 and the arc-shaped groove 613 in the direction perpendicular to the axis of the self-locking pipe 6; the axis of the arc-shaped groove 613 is coaxially arranged with the axis of the self-locking pipe 6.

[0065] Further, when the ball 121 is displaced from the port of the spiral groove one 611 to the connecting node of the spiral groove one 611 and the spiral groove two 612, the tension spring 8 changes from the free state to the compressed maximum stroke state; when the ball 121 is displaced into the arc-shaped groove 613 from the spiral groove two 612, the tension spring 8 changes from the compressed state to the released state.

[0066] In the initial state of the application, the tension spring 8 is in a free state, the ball 121 is aligned with the spiral groove one 611, the self-locking tube 6 is in the initial position, and the half-ring tube 41 is in an open state under the action of the elastic diaphragm 42 and the return spring 403; the connecting male head 2 is aligned with the outer ring insertion slot 11 of the female head, and the anti-stupid strip 111 and the anti-stupid groove 211 ensure correct alignment; continue to push, the electric core column 22 is inserted into the half-circle electric core sleeve 45, in this process, under the cooperation of the ball 121 and the spiral groove one 611, the self-locking tube 6 rotates, driving the tension disc 7 to rotate and compressing the tension spring 8, when the ball 121 runs to the connection node of the spiral groove one 611 and the spiral groove two 612, the end surface of the half-ring block 44 is opposite to the end surface of the execution groove 71, and the half-ring block 44 has the tendency to be clamped into the execution groove 71, with the continuation of the pushing, the ball 121 enters the spiral groove two 612, and the tension spring 8 starts to release the compressed elastic potential energy, at this time, the self-locking tube 6 and the tension disc 7 are all reversed, after the half-ring block 44 is clamped into the execution groove 71, the execution groove 71 gradually changes from the maximum groove width to the minimum groove width, and then makes the two groups of half-ring tubes 41 slide along the guide rail 143, until the anti-extraction protrusion 451 is clamped into the anti-extraction recess 221, when the ball 121 enters the arc-shaped groove 613, the two groups of half-ring blocks 44 are completely aligned, and the half-circle electric core sleeve 45 completely holds the electric core column 22, completes the conductive contact, and forms a primary mechanical locking by the anti-extraction protrusion 451 and the anti-extraction recess 221, and a secondary mechanical locking of the axial displacement of the self-locking tube 6 by the ball 121 and the arc-shaped groove 613, and then completes the self-locking effect after the connection of the female head 1 and the male head 2.

[0067] When it is necessary to release the connection of the female head 1 and the male head 2, only need to rotate the reset bracelet 74 by external force, the ball 121 slides into the spiral groove two 612 from the arc-shaped groove 613, at this time, the locking action of the axial displacement of the self-locking tube 6 is released, continue to rotate the reset bracelet 74 to make the ball 121 displace along the spiral groove two 612, so that the self-locking tube 6 gradually separates from the female head 1 and retreats axially, at the same time, the execution groove 71 gradually changes from the minimum groove width to the maximum groove width, the half-ring tube 41 is opened under the action of the elastic diaphragm 42, and the locking state of the anti-extraction protrusion 451 and the anti-extraction recess 221 is released, at the same time, the tension spring 8 is compressed again, when the ball 121 enters the spiral groove one 611, the elastic force of the tension spring 8 is used to push the self-locking tube 6 to rotate, and the spiral groove one 611 and the ball 121 are used to cooperate, so that the female head 1 and the male head 2 can be automatically separated, improving the convenience of disassembly.

[0068] The connecting female head 1 and the connecting male head 2 of the application can realize the self-locking of the anti-disengagement protrusion 451 by the compression and release of the tension spring 8 and the guidance of the guide groove 61 after the engagement. The mechanical engagement of the anti-disengagement protrusion 451 and the anti-disengagement groove 221 and the clamping force of the semi-ring pipe 41 can withstand a larger axial pull-off force. Compared with the traditional buckle connector, the application can effectively prevent the vibration from falling off. At the same time, the application adopts the semi-circular battery core sleeve 45 to engage the battery core column 22, which can effectively reduce the friction between the semi-circular battery core sleeve 45 and the battery core column 22, and effectively avoid the phenomenon of poor contact caused by excessive friction between the two.

[0069] The above is only the best embodiment of the application combined with the current actual needs, but the protection scope of the application is not limited to this.

Claims

1. A cable connector with a self-locking function, comprising a female connector (1) and a male connector (2), characterized in that, The female connector (1) is provided with several clamping components (4) evenly distributed at equal angles. The clamping components (4) are composed of two sets of symmetrically slidingly connected semi-ring tubes (41). One end of the semi-ring tube (41) is fixed with an actuating semi-ring block (44). A semi-circular battery sleeve (45) is fixed inside the semi-ring tube (41). An anti-detachment protrusion (451) is provided inside the semi-circular battery sleeve (45). The male connector (2) is provided with a battery post (22) corresponding to the clamping components (4). An anti-detachment groove (221) is provided on the battery post (22) to cooperate with the anti-detachment protrusion (451). On the opposite sides of the two sets of semi-circular tubes (41), an elastic diaphragm (42) is fixed. The elastic diaphragm (42) has an elastic force that drives the two sets of semi-circular tubes (41) to move away from each other. On the opposite sides of the two sets of semi-circular tubes (41), a sealing diaphragm (401) is also glued. The male connector (2) is provided with a self-locking tube (6), which is used to press the two sets of actuating semi-ring blocks (44) close together and make the two sets of semi-ring tubes (41) synchronously close together when the female connector (1) and the male connector (2) are engaged. The male connector (2) is also provided with a tensioning disc (7), which is used to provide circumferential support force for the self-locking tube (6). The female connector (1) is also provided with an outer ring slot (11), the male connector (2) is provided with a mating outer tube (21) that matches the outer ring slot (11), the inner side of the mating outer tube (21) is provided with a foolproof groove (211), the outer ring slot (11) is provided with a foolproof strip (111) that matches the foolproof groove (211), and a waterproof sealing gasket (15) is fixed inside the outer ring slot (11). The connecting female head (1) is also provided with an inner ring slot (12) between the outer ring slot (11) and the docking base (13), and the inner ring slot (12) cooperates with the self-locking tube (6); The self-locking tube (6) is fixed on one side of the tensioning disc (7). The tensioning disc (7) is rotatably connected to the connecting male (2). Several tensioning springs (8) are fixed between the tensioning disc (7) and the connecting male (2) at equal intervals. Several guide grooves (61) are arranged at equal angles on the outer wall of the self-locking tube (6). A ball (121) that cooperates with the guide groove (61) is provided on the port side of the inner ring slot (12). The tensioning disc (7) is also provided with an actuation groove (71) on the inner side of the self-locking tube (6); The guide groove (61) includes a spiral groove one (611) and a spiral groove two (612) connected to the spiral groove one (611). The spiral groove two (612) is connected to an arc groove (613) on the side away from the spiral groove one (611). The execution groove (71) includes a petal-shaped outer groove wall (711) and a petal-shaped inner groove wall (712). The maximum distance between the petal-shaped outer groove wall (711) and the petal-shaped inner groove wall (712) is equal to the maximum distance when the execution half-ring block (44) is far apart. The minimum distance between the petal-shaped outer groove wall (711) and the petal-shaped inner groove wall (712) is equal to the maximum distance when the execution half-ring block (44) is in contact with each other. Both the outer petal-shaped groove wall (711) and the inner petal-shaped groove wall (712) are provided with arc-shaped grooves (701) at their curve nodes. The radius of the arc-shaped groove (701) is equal to the outer radius of the execution semi-ring block (44).

2. A cable connector with self-locking function according to claim 1, characterized in that, The connecting female head (1) includes a docking base (13), and the docking base (13) is provided with a straight groove (14) corresponding to the clamping component (4). The end of the elastic diaphragm (42) away from the semi-ring tube (41) is fixed on the inner wall of the straight groove (14). The straight groove (14) is also provided with symmetrically arranged guide rails (143), and the two sides of the semi-annular tube (41) are symmetrically provided with sliding grooves (411) that match the guide rails (143).

3. A cable connector with self-locking function according to claim 2, characterized in that, A sealing baffle (43) is fixed between the semi-ring pipe (41) and the execution semi-ring block (44). An end cover plate (3) is detachably fixed at the end of the docking base (13). The end cover plate (3) is provided with a sealing groove two (31) and a sealing groove one (141) corresponding to the sealing baffle (43) on the side opposite to the straight groove (14). On the side opposite to the sealing groove 1 (141), sealing ring 2 (32) and sealing ring 1 (142) are fixed respectively. The two sides of the sealing baffle (43) abut against sealing ring 2 (32) and sealing ring 1 (142) respectively. The end of the execution semi-ring block (44) away from the semi-ring tube (41) passes through the sealing groove 2 (31) and extends to the side of the end cover plate (3) away from the docking base (13).

4. A cable connector with self-locking function according to claim 1, characterized in that, Both sets of semi-circular tubes (41) are provided with a rhomboid movable lever arm (402) and a terminal block (412) at the end away from the actuating semi-circular block (44). A return spring (403) is fixed between the rhomboid movable lever arms (402). The return spring (403) has an elastic force that drives the two sets of semi-circular tubes (41) to move away from each other.

5. A cable connector with self-locking function according to claim 1, characterized in that, The tensioning disc (7) has four sets of arc-shaped through slots (72) arranged at equal angles. One end of the battery core column (22) extends through the arc-shaped through slots (72) and is electrically connected to the external cable. The tensioning disc (7) has four sets of connecting rods (73) arranged at equal angles on the side away from the self-locking tube (6). The connecting male (2) has an arc-shaped through groove (23) that matches the connecting rod (73). One end of the connecting rod (73) extends through the arc-shaped through groove (23) to the outer wall of the connecting male (2) and is fixed with a reset wristband (74).

6. A cable connector with self-locking function according to claim 1, characterized in that, In the free state, the port of the first spiral groove (611) of the tension spring (8) is opposite to the ball (121), and the distance between the two ends of the first spiral groove (611) in the axial direction of the self-locking tube (6) is equal to the distance between the end face of the self-locking tube (6) and the end face of the execution groove (71) in the axial direction. The distance between the two ends of the spiral groove (612) and the arc groove (613) in the direction of the axis of the self-locking tube (6) is equal to the groove depth of the execution groove (71); The arc length of the projection surface of the two ends of the spiral groove one (611) in the direction perpendicular to the axis of the self-locking tube (6) is equal to the total arc length of the projection surface of the spiral groove two (612) and the arc groove (613) in the direction perpendicular to the axis of the self-locking tube (6). The axis of the arc groove (613) is coaxial with the axis of the self-locking tube (6).

7. A cable connector with self-locking function according to claim 1, characterized in that, When the ball (121) is displaced from the port of the first spiral groove (611) to the connection node of the first spiral groove (611) and the second spiral groove (612), the tension spring (8) changes from a free state to a state of maximum compression; when the ball (121) and the second spiral groove (612) are displaced into the arc groove (613), the tension spring (8) changes from a compressed state to a released state.

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