A type of anti-loosening connector

Abstract

This invention discloses an anti-loosening connector, belonging to the field of connector technology, to solve the problems of existing high-current connectors having a limited number of compatible input lines and insufficient sealing reliability. The anti-loosening connector includes a housing, input line output copper pins, and several conversion conductors. The input line is inserted into the housing after passing through a wire sleeve. The output copper pins are located inside the housing and are conductively connected to the conversion conductors. Each conversion conductor has an output end and an input end with an elastic deformation portion. A single conversion conductor can connect one input line and one output copper pin individually. The double gap between adjacent conversion conductors allows a single input line to be inserted to simultaneously connect two output copper pins. The housing also includes a black bakelite insert and a rubber ring, forming a double-gap seal. This connector can flexibly achieve two-wire input and four-wire output or four-wire input and four-wire output, with reliable sealing, preventing input line loosening and the intrusion of external moisture and dust, meeting the high-current transmission requirements of new energy storage, industrial automation, and other fields.

Description

Technical Field

[0001] This invention belongs to the field of connector technology, and specifically relates to an anti-loosening connector. Background Technology

[0002] High-current connectors are widely used in new energy storage, industrial automation, and construction machinery to achieve conductive connections between input lines and output pins, meeting the power supply requirements of multiple loads and high-current transmission. These connectors typically include a housing, an input port, an output port, and an internal conductive structure. The input line passes through the input port into the housing and makes a conductive connection with the output pins. The end of the output pin protrudes from the output port to connect to external electrical appliances. The housing uses a wire sleeve and locking structure to limit and fix the input line, ensuring connection stability.

[0003] However, the input connection structure of existing connectors has obvious limitations: the adaptation method between the input port and the input line is fixed, and it can only match a single number of input lines (such as supporting only two-wire input or only four-wire input). When the device needs to switch between two-wire input (small capacity scenario) and four-wire input (large capacity scenario) according to the power configuration, the corresponding model of connector needs to be replaced, resulting in redundant inventory for users, complicated selection, and the need to repurchase and install when the configuration is temporarily adjusted on the project site, which seriously affects the flexibility of adaptation and construction efficiency. At the same time, gaps are easily formed between the input line and the sleeve and the housing. Traditional sealing structures are difficult to effectively seal these gaps. External moisture and dust can easily enter the housing through the gaps, causing oxidation and corrosion of conductive components such as the conversion conductor and output copper pin, and even causing short circuit failures. This significantly reduces the sealing reliability and service life of the connector and cannot meet the needs of use under harsh working conditions. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides an anti-loosening connector. Through the structural design of the internal conversion conductor and the related structure of the black bakelite sleeve, it achieves a two-to-four or four-to-four connection method, while improving the dustproof and waterproof effect.

[0005] The technical solution adopted in this invention is as follows:

[0006] This invention discloses an anti-loosening connector for connecting an input line to a socket, comprising a housing and an output copper pin. The input line and the output copper pin are respectively inserted from the outside of the housing and electrically connected inside the housing. One end of the housing has an output port for the end of the output copper pin to protrude, and the other end of the housing has a wire sleeve that clamps and fixes the outside of the input line to form a limiting and fixed input port.

[0007] The housing contains several switching conductors, each having an output end that contacts the output copper pin for conduction, and an input end that connects to the input line and has an elastically deformable portion.

[0008] When each conversion conductor is individually connected to an output copper pin and an input line, the input line is inserted into the input end so that the elastic deformation part protrudes outward and is limited in deformation.

[0009] There is a double gap between the elastic deformation portions of the input ends of two adjacent switching conductors. The double gap is smaller than the cross-sectional size of the input line. When a single input line is inserted into the double gap, it connects to two output copper pins at the same time, and at least one side of the elastic deformation portion is limited to deform inward when inserted.

[0010] It should be noted that the conversion conductor is fixed inside the housing, forming a limiting connection with the housing. This is not limited to direct fixing by the housing or fixing via a connecting structure. The so-called output end of the conversion conductor connects to a fixed number of output copper pins, meaning there is no conversion requirement at the output end, while the input end is used to fulfill the conversion requirement. A single conversion conductor can connect to at least one input line, or at least two conversion conductors can connect to the same input line. The so-called elastic deformation part refers to a deformable limiting structure on the input end. The internal gap size of the input end of a single conversion conductor is smaller than the cross-sectional size of a single input line. Therefore, when a single input line is inserted into the input end, the elastic deformation part protrudes outward, achieving a locking and limiting effect on the input line. When two conversion conductors are connected to the same input line simultaneously, the characteristic of the two elastic deformation parts being positioned opposite each other and the double gap also being smaller than the cross-sectional gap of the input line allows the input line to be inserted into the double gap, causing the elastic deformation part to protrude and deform towards the corresponding conversion conductor, thus achieving a locking and limiting effect on the input line inserted into the double gap.

[0011] Furthermore, the switching conductor has a U-shaped cross-section. One end of the switching conductor is the output end, and the outer wall of the output end is attached to the output copper pin to form a conductive connection. The other end, the input end, has an elastically deformable outer wall opposite to the adjacent switching conductor. The inner cross-sectional dimension of the input end is smaller than the cross-sectional dimension of the input line.

[0012] Furthermore, the output copper needle comprises two parts that are nested together. The first part is connected to the housing via an output sleeve installed inside the housing, and the second part is connected to the housing via a black bakelite sleeve installed inside the housing.

[0013] The housing has internal threads, and the black bakelite sleeve is pressed and fixed inside the housing by a clamping ring that cooperates with the internal threads for limiting.

[0014] Furthermore, the housing is also provided with a black bakelite socket, the conversion conductor is fixed on the black bakelite socket, and the input line enters from one end of the housing, passes through the black bakelite socket, and connects to the conversion conductor.

[0015] Furthermore, the black bakelite socket is provided with several through holes, through which the input line passes and is electrically connected to several conversion conductors fixed on one end face of the through holes;

[0016] On the other side of the black bakelite plug sleeve that fixes the conversion conductor, there is a protrusion. The protrusion is inserted into the gap between the input line and the sleeve and causes the connection of the sleeve to expand and seal.

[0017] The black bakelite insert is movably connected to the black bakelite sleeve on the end face of the fixed conversion conductor via a rubber ring. The black bakelite insert is inserted into the end of the wire sleeve and fixed inside the housing. When the black bakelite sleeve is pressed against the housing by the compression ring, the rubber ring is squeezed and expands in an annular shape to press against the inner wall of the housing and form a gap seal with the black bakelite insert against the input line.

[0018] The term "gap seal" refers to a situation where the input wire inserted into the housing has a gap between itself and the housing. In this invention, the input wires are several independent wires housed within a sleeve. After insertion into the housing, the sleeve is pressed and fixed, but a gap still exists between the sleeve and the housing. Liquid entering the housing through this gap can come into contact with the input wire or the switching conductor. Therefore, the rubber ring forms a seal, preventing liquid from entering the front part of the black bakelite sleeve. Simultaneously, because the protruding part of the black bakelite insert expands and abuts the sleeve from the inside, even if liquid manages to enter between the black bakelite insert and the black bakelite sleeve, it is blocked by these two parts and cannot contact the input wire or the switching conductor, thus forming the so-called gap seal.

[0019] Furthermore, the housing includes an input housing and an output housing that are coaxially connected. The output housing is provided with an external thread, and the input housing and the output housing are tightened and fixedly connected by a connecting nut sleeved on the output housing through threaded engagement.

[0020] The output sleeve is disposed inside the output housing, and the clamping ring presses the black bakelite sleeve into the input housing. The output copper needle passes through both the output sleeve and the black bakelite sleeve.

[0021] Furthermore, the output copper needle is provided with a snap-fit ​​structure, and after the output copper needle passes through the copper needle hole provided on the black bakelite sleeve, it is snapped and limited by the snap-fit ​​structure with the end face of the copper needle hole.

[0022] Furthermore, the output housing is also provided with an output fixing nut for fixing the output housing to the external socket.

[0023] Furthermore, one end of the input housing has an input port for inserting a wire sleeve. The input port is provided with a locking cover and a semi-circular portion corresponding to the locking cover. The wire sleeve is clamped and fixed by reducing the gap between the locking cover and the semi-circular portion through bolts.

[0024] The beneficial effects of this invention are as follows:

[0025] This technology achieves multiple core benefits through innovative design of the conversion conductor and sealing structure:

[0026] Firstly, by utilizing the elastic deformation portion of the input end of the conversion conductor and the double gap between adjacent conversion conductors, the connector can flexibly adapt to two-wire input and four-wire input modes. It can meet the usage requirements of devices with different power configurations without replacing the connector, which greatly reduces the user's inventory costs, selection difficulty and project adaptation cycle, and improves the product's versatility and adaptability.

[0027] Secondly, the protruding part of the black bakelite insert expands and abuts the wire sleeve from the inside, and together with the sealing surface formed by the annular expansion of the rubber ring after being squeezed, a double gap sealing structure is constructed, which effectively blocks the gap between the input line and the wire sleeve and the housing, completely blocking the intrusion path of external moisture and dust, significantly improving the sealing reliability of the connector, and avoiding oxidation and short circuit of conductive parts.

[0028] Third, the elastic deformation part of the switching conductor generates adaptive deformation limit when the input line is inserted, realizing a stable connection of the input line. Even in a high-frequency vibration environment, it can prevent the input line from loosening, ensure contact stability during high current transmission, and reduce contact resistance and heat generation risk.

[0029] In addition, the overall structural design takes into account both ease of assembly and structural strength, extending the service life of the connector and meeting the core requirements of high reliability and high versatility for high-current connectors in fields such as new energy and industrial equipment. Attached Figure Description

[0030] Figure 1 This is a plan view of the anti-loosening plug in an embodiment of the present invention;

[0031] Figure 2 This is a first isometric view showing the interior of a portion of the anti-loosening plug in its assembled state, as described in an embodiment of the present invention.

[0032] Figure 3 This is the present invention. Figure 2 Enlarged internal view of part A in the diagram;

[0033] Figure 4 This is a second isometric view showing the interior of a portion of the anti-loosening plug in its assembled state in an embodiment of the present invention;

[0034] Figure 5 This is the present invention. Figure 4 Enlarged internal view of part B in section B;

[0035] Figure 6 This is a first isometric view of the anti-loosening plug in the disassembled state in an embodiment of the present invention;

[0036] Figure 7 This is a second isometric view of the anti-loosening plug in the disassembled state in an embodiment of the present invention;

[0037] Figure 8 This is the present invention. Figure 7 A magnified view of part C in the diagram;

[0038] Figure 9 This is a schematic diagram of a single input line simultaneously connecting to two output copper pins in an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram showing the state in which two input lines are respectively connected to two output copper pins in an embodiment of the present invention.

[0040] In the diagram: 1-Input housing, 2-Output housing, 3-Output fixing nut, 4-Connecting nut, 5-Wire sleeve, 6-Input wire, 7-Output copper pin, 8-Locking cover, 9-Black bakelite sleeve, 901-Slide groove, 902-Copper pin hole, 10-Black bakelite insert, 11-Converter conductor, 12-Glue ring, 13-Output sleeve, 14-Pressure ring. Detailed Implementation

[0041] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] This embodiment provides an anti-loosening connector, mainly used in new energy storage, industrial automation, and engineering machinery fields. It is used to achieve a conductive connection between the input line 6 and the output copper pin 7, adapting to the power supply needs of electrical appliances such as inverters, battery management systems (BMS), servo motors, and actuators, and meeting the requirements for stable high-current transmission. Its current specifications are typically an input rated current of not less than 120A and a peak current of not less than 160A, and an output rated current of not less than 60A and a peak current of not less than 80A, adapting to the power transmission needs of medium and low voltage power supply scenarios.

[0046] The anti-loosening connector includes a housing, which is a tubular structure. One side is connected to the input line 6, and the other side is connected to the electrical appliance or power supply.

[0047] The input line 6 consists of multiple wires housed within the sleeve 5. During use, the rubber insulation at the end of the input line 6 is removed to expose the internal copper core. The housing contains four output copper pins 7 and several conversion conductors 11. The output copper pins 7 and conversion conductors 11 are all connected to the housing via insulating material, with the conversion conductors 11 paired in pairs.

[0048] One end of the conversion conductor 11 is the output end, which is electrically connected to the output copper pin 7, and the other end is the input end, which is used to connect the copper core of the input line 6. The input end is provided with an elastic deformation part.

[0049] When a four-wire input and four-wire output connection is required, the copper core of each input wire 6 is inserted into the input terminal of a conversion conductor 11. After the input wire 6 is inserted, the elastic deformation part protrudes outward and deforms. The force generated by the elastic deformation clamps and limits the input wire 6. At this time, each conversion conductor 11 is connected to an output copper pin 7 and an input wire 6. The current is transmitted to the output copper pin 7 through the input wire 6 and the conversion conductor 11, so as to achieve stable transmission.

[0050] When a two-wire input and four-wire output connection is required, the copper core of a single input wire 6 is inserted into the double-connection gap between two paired conversion conductors 11. Since the double-connection gap is smaller than the cross-sectional size of the input wire 6, at least one side of the elastic deformation portion deforms inward during the insertion process. The input wire 6 is locked and limited by the combined force of the elastic deformation portions on both sides. At this time, the single input wire 6 is simultaneously electrically connected to the two conversion conductors 11, thereby achieving conductive connection with the two output copper pins 7. The current is shunted from the single input wire 6 to the two output copper pins 7, ensuring stability during the transmission of large currents.

[0051] This embodiment refines and defines the structure of the switching conductor 11 based on the above embodiments.

[0052] Reference Figure 9 and Figure 10The conversion conductor 11 is a semi-tubular metal structure cut along the axis. One end serves as the output end and is attached to the output copper pin 7 to achieve conductive connection. The other end serves as the input end for connecting the input line 6. One side wall of the input end is thickened. This thickened wall is the elastic deformation part, which can deform in the inward and outward directions.

[0053] In this embodiment, the part connecting the output copper pin 7 to the conversion conductor 11 is semi-cylindrical. Similarly, the conversion conductor 11 is also a semi-cylindrical structure of similar or slightly smaller size, and is a conical semi-cylindrical structure, which can fit and contact the semi-cylindrical part of the output copper pin 7. The input end of the copper core part connecting the input line 6 is also a conical part with a variable cross-section, which can provide a certain clamping effect for the input line 6. When the input line 6 is inserted into the input end of the conversion conductor 11, the elastically deformable part can abut against the deformation, so that it can provide an elastic limiting function as the part with the gap change.

[0054] Reference Figure 9 When a four-wire input and four-wire output connection is required, the copper core of each input wire 6 is inserted into the input end of a conversion conductor 11. Since the inner cross-sectional dimension of the input end of the conversion conductor 11 is smaller than the cross-sectional dimension of the input wire 6, the input wire 6 will exert a squeezing force on the inner wall of the input end after insertion, causing the elastic deformation part to bulge outward. The bulging elastic deformation part forms a limiting fit with the inside of the housing, thereby firmly locking the input wire 6 in the input end and ensuring reliable conductive contact between the input wire 6 and the conversion conductor 11.

[0055] Reference Figure 10 When a two-wire input and four-wire output connection is achieved, the copper core of a single input wire 6 is inserted into the double-pair gap between two paired conversion conductors 11. The double-pair gap is smaller than the cross-sectional size of the input wire 6. When the input wire 6 is inserted, it compresses the elastic deformation parts of the two conversion conductors 11 that are positioned opposite each other, causing the elastic deformation parts to deform into their respective corresponding conversion conductors 11. The deformed elastic deformation parts form a bidirectional clamping force on the input wire 6, which tightly fixes the input wire 6 in the double-pair gap, thereby achieving a stable conductive connection between the single input wire 6 and the two conversion conductors 11, and thus conducting the two output copper pins 7.

[0056] This embodiment refines and defines the sealing and limiting structure within the housing, based on the above embodiments.

[0057] Reference Figures 1-8 The housing has a split structure, including an input housing 1 and an output housing 2. The output copper pin 7 is divided into two parts that are nested together.

[0058] The output housing 2 is provided with an output sleeve 13, and the first part of the output copper needle 7 passes through the output sleeve 13 to achieve a limiting connection with the output housing 2 through the output sleeve 13; the input housing 1 is provided with a black bakelite sleeve 9, and the second part of the output copper needle 7 passes through the copper needle hole 902 in the black bakelite sleeve 9 to achieve a limiting connection with the input housing 1 through the black bakelite sleeve 9.

[0059] The input housing 1 has an internal thread, and the clamping ring 14 is connected to the internal thread. When the clamping ring 14 is tightened, the clamping ring 14 applies abutting force to the inside of the input housing 1, and fixes the black bakelite sleeve 9 inward, ensuring that the connection between the two parts of the output copper needle 7 is stable and ensuring the continuity of conductive transmission.

[0060] Reference Figure 5 and Figure 6 The housing also includes a black bakelite insert 10, on which the conversion conductor 11 is fixed. The black bakelite insert is similar to a T-shaped structure, with several conversion conductors 11 fixed at its larger end. It has a through hole for the copper core of the input line 6 to pass through, while the smaller end is adapted to the wire sleeve 5 structure. The wire sleeve 5 can be inserted from the inside and the input line 6 can be inserted into the through hole. A sealing effect is achieved by squeezing the wire sleeve 5 outward.

[0061] The input line 6 passes through the black bakelite socket 10 and is connected to the input end of the conversion conductor 11. A rubber ring 12 is provided on the side end face of the black bakelite socket 10 facing the black bakelite sleeve 9. The rubber ring 12 connects the black bakelite socket 10 and the black bakelite sleeve 9.

[0062] Reference Figure 8 The diagram shows the rubber ring 12 cut in half. When the clamping ring 14 pushes the black bakelite sleeve 9 inward, the sleeve applies a uniform squeezing force to the rubber ring 12, causing it to expand outward in a ring shape. The expanded rubber ring 12 tightly abuts against the inner wall of the input housing 1, forming the first gap sealing structure to prevent external substances from entering through the housing connection. The outer wall of the black bakelite sleeve has a sliding groove 901, and the inner wall of the input housing 1 has a convex rail. The linear movement of the black bakelite sleeve is limited by the cooperation of the convex rail and the sliding groove 901, preventing the sleeve from rotating due to the rotation of the clamping ring 14.

[0063] The black bakelite insert 10 has a protrusion on the side opposite to the black bakelite sleeve 9. This protrusion inserts into the gap between the cable sleeve 5 and the input line 6. The support of the protrusion causes a slight expansion at the connection of the cable sleeve 5, thereby filling the gap between the cable sleeve 5 and the input line 6, forming a second gap sealing structure. The two sealing structures together form a closed sealing area, effectively blocking the path of external moisture and dust into the housing.

[0064] This embodiment describes the fixing structure outside the shell, based on the above embodiments.

[0065] An output fixing nut 3 is provided on the outside of the output housing 2. After the end of the output copper pin 7 protrudes from the output port and connects to the external socket, the output housing 2 is fixedly connected to the external socket by tightening the output fixing nut 3. This prevents the output copper pin 7 from detaching from the external socket due to vibration or other factors during use, and ensures the stability of the connection.

[0066] The output housing 2 is also provided with external threads. The connecting nut 4 is sleeved on the outside of the output housing 2 and mates with the external threads. After the input housing 1 and the output housing 2 are coaxially connected, the connecting nut 4 is tightened. The locking force of the connecting nut 4 pulls the input housing 1 and the output housing 2 tight and fixed, ensuring the integrity and sealing of the split housings after connection, and preventing loosening or gaps at the housing connection.

[0067] The input port of the input housing 1 has a semi-circular portion, and the locking cover 8 is correspondingly set to this semi-circular portion. After the wire sleeve 5 is inserted into the input port, the gap between the locking cover 8 and the semi-circular portion is gradually reduced by tightening the bolts, thereby clamping and fixing the inserted wire sleeve 5, realizing a stable connection between the wire sleeve 5 and the input housing 1, preventing the wire sleeve 5 from causing the input line 6 to shift, and further ensuring stable conductive contact between the input line 6 and the conversion conductor 11.

[0068] This invention is not limited to the optional embodiments described above, and anyone can derive other various forms of products based on the inspiration of this invention. The specific embodiments described above should not be construed as limiting the scope of protection of this invention; the scope of protection of this invention should be determined by the claims, and the specification can be used to interpret the claims.

Claims

1. A locking connector for connecting an input line (6) to a socket, comprising a housing and an output copper pin (7), wherein the input line (6) and the output copper pin (7) are respectively inserted from the outside of the housing and electrically connected inside the housing, one end of the housing has an output port for the end of the output copper pin (7) to protrude, and the other end of the housing has a wire sleeve (5) for clamping and fixing the outside of the input line (6) to form a limiting and fixed input port; characterized in that: A plurality of conversion conductors (11) are provided inside the housing. The conversion conductors (11) have an output end that contacts the output copper needle (7) for conduction, and an input end that connects to the input line (6) and has an elastically deformable portion. When each conversion conductor (11) is individually connected to an output copper pin (7) and an input line (6), the input line (6) is inserted into the input end so that the elastic deformation part protrudes outward and is limited by deformation. The elastic deformation portion of the input end of two adjacent conversion conductors (11) is a double gap. The double gap is smaller than the cross-sectional size of the input line (6). When a single input line (6) is inserted into the double gap, it connects two output copper pins (7) at the same time, and at least one side of the elastic deformation portion is deformed inward to limit the insertion. When the four-wire input and four-wire output are connected, the copper core of each input wire (6) is inserted into the input end of a conversion conductor (11). After the input wire (6) is inserted, the elastic deformation part protrudes outward and deforms. The force generated by the elastic deformation clamps and limits the input wire (6). Each conversion conductor (11) is connected to an output copper needle (7) and an input wire (6) separately. The current is transmitted to the output copper needle (7) through the input wire (6) and the conversion conductor (11). When the two-wire input and four-wire output are connected, the copper core of the single input wire (6) is inserted into the double gap between the two paired conversion conductors (11). Since the double gap is smaller than the cross-sectional size of the input wire (6), at least one side of the elastic deformation part deforms inward during the insertion process. The input wire (6) is locked and limited by the combined force of the elastic deformation parts on both sides. The single input wire (6) is simultaneously electrically connected to the two conversion conductors (11) and electrically connected to the two output copper pins (7). The current is shunted from the single input wire (6) to the two output copper pins (7). The conversion conductor (11) has a U-shaped cross-section. One end of the conversion conductor (11) is the output end, and the outer wall of the output end is attached to the output copper needle (7) to form a conductive connection. The other end, the input end, has an elastically deformable outer wall opposite to the adjacent conversion conductor (11). The inner cross-sectional dimension of the input end is smaller than the cross-sectional dimension of the input line (6).

2. The anti-loosening connector according to claim 1, characterized in that: The output copper needle (7) includes two parts that are nested together. The first part is connected to the housing through an output sleeve (13) installed in the housing for limiting, and the second part is connected to the housing through a black bakelite sleeve (9) installed in the housing for limiting. The housing has an internal thread, and the black bakelite sleeve (9) is pressed and fixed inside the housing by a clamping ring (14) that cooperates with the internal thread for positioning.

3. The anti-loosening connector according to claim 2, characterized in that: The housing is also provided with a black bakelite socket (10), the conversion conductor (11) is fixed on the black bakelite socket (10), and the input line (6) passes through the black bakelite socket (10) from one end of the housing and is connected to the conversion conductor (11).

4. The anti-loosening connector according to claim 3, characterized in that: The black bakelite socket (10) is provided with several through holes, and the input line (6) passes through the through holes and is electrically connected to several conversion conductors (11) fixed on one side of the through hole. On the other side of the black bakelite socket (10) fixing the conversion conductor (11), there is a protrusion. The protrusion is inserted into the gap between the input line (6) and the wire sleeve (5) and expands and seals the connection of the wire sleeve (5). The black bakelite insert (10) is movably connected to the black bakelite sleeve (9) on one end face of the fixed conversion conductor (11) through a rubber ring (12). The black bakelite insert (10) is inserted into the end of the wire sleeve (5) and fixed in the housing. When the black bakelite sleeve (9) is pressed against the housing by the compression ring (14), the rubber ring (12) is squeezed and expanded in an annular shape against the inner wall of the housing and forms a gap seal with the black bakelite insert (10) against the input line (6).

5. The anti-loosening connector according to claim 4, characterized in that: The housing includes an input housing (1) and an output housing (2) that are coaxially connected. The output housing (2) is provided with an external thread. The input housing (1) and the output housing (2) are tightened and fixedly connected by a connecting nut (4) sleeved on the outside of the output housing (2). The output sleeve (13) is located inside the output housing (2), and the clamping ring (14) presses the black bakelite sleeve (9) into the input housing (1). The output copper needle (7) passes through both the output sleeve (13) and the black bakelite sleeve (9).

6. The anti-loosening connector according to claim 5, characterized in that: The output copper needle (7) is provided with a snap-fit ​​structure. After the output copper needle (7) passes through the copper needle hole (902) provided on the black bakelite sleeve (9), it is snapped and limited by the snap-fit ​​structure to the end face of the copper needle hole (902).

7. The anti-loosening connector according to claim 5, characterized in that: The output housing (2) is also provided with an output fixing nut (3) for fixing the output housing (2) to the external socket.

8. The anti-loosening connector according to claim 5, characterized in that: The input housing (1) has an input port for inserting a wire sleeve (5) at one end. The input port is provided with a locking cover (8) and a semi-circular part corresponding to the locking cover (8). The wire sleeve (5) is clamped and fixed by reducing the gap between the locking cover (8) and the semi-circular part by bolts.

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