A cable connection device and method

Abstract

The present invention provides a cable connection device and method, belonging to the technical field of cable connection. The cable connection device includes an inner joint for fixing the wire core and an outer joint for fixing the cable body and strengthening the connection state of the inner joint. The wire cores are fixed in the inner joint in three states: intertwined with each other, relatively independent, and conductor exposed. Combining the initial filling and squeezing of the intertwined wire cores by the filling head and the secondary in-depth filling and squeezing, and the further pressing and fixing of the wire cores in the intertwined state, independent state, and conductor exposed state by the outer joint, the connection strength, stability, and reliability of the cable are fully improved, enabling the cable to maintain a stable and reliable connection state even when the connection of the cable body becomes loose, and at the same time having the advantage of being easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of cable connection, and particularly to a cable connection device and method. Background Art

[0002] Cables are usually connected to other cables or devices through connection devices to achieve effective transmission of electricity or signals. Common connection devices include terminal blocks, connectors, busbars, etc.

[0003] Currently, the main way to fix the connection between a cable and a connection device is to compress and fix the end of the cable. The stability and reliability of the connection mainly depend on the compression force directly applied by the connection device to the end of the cable. Once the connection at the end of the cable becomes loose due to external pulling force, the external force will directly act on the wire core, easily loosening or even disconnecting the connection state of the wire core, thereby affecting the stability and reliability of the cable connection. Summary of the Invention

[0004] The present invention provides a cable connection device and method to solve the problem that in the related art, once the end of the cable is loosened due to external pulling force during the cable connection state, the external force will directly act on the wire core, easily loosening or even disconnecting the connection state of the wire core, thereby affecting the stability and reliability of the cable connection.

[0005] The present invention provides a cable connection device. The cable connection device includes an inner joint for fixing the wire core. The inner joint includes symmetrically distributed crimping chambers. In the crimping chambers, a first crimping area, a second crimping area, and a third crimping area are sequentially arranged. The wire core passes through the first crimping area, the second crimping area, and the third crimping area in sequence. The wire core in the first crimping area is in a wound state, the wire core in the second crimping area is in an independent state, and the wire core in the third crimping area has its conductor exposed. The symmetric crimping chambers are pressed and fixed to preliminarily press and fix the wound wire core, the independent wire core, and the wire core with exposed conductor synchronously. A filling head slidably connected to the crimping chamber is arranged in the first crimping area. One end of the filling head is inserted into the wound wire core and this end is in a conical structure. A clamping head for preliminarily fixing the wire core is arranged in one of the second crimping areas. An outer joint for fixing the cable body and strengthening the connection state of the inner joint includes an annular seat fixedly connected to one of the crimping chambers, a locking sleeve threadedly connected to the annular seat, and a pressing sleeve rotatably connected to the locking sleeve. A pressing head penetrates and is slidably connected to the crimping chamber. As the locking sleeve is threadedly locked with the annular seat, the pressing sleeve feeds axially and limits the filling head and the pressing head during this process, so that the pressing head presses and fixes the wire core in the first and second crimping areas and the conductor in the third crimping area, and the filling head deeply squeezes and tightly fills the wound wire core for secondary filling and squeezing.

[0006] In a possible implementation manner, the pressing sleeve includes a sleeve body with a limiting member disposed therein. The pressing head includes a first pressing member located in the first crimping area, a second pressing member located in the second crimping area, and a third pressing member located in the third crimping area. The filling head includes a unified connecting member and a plurality of filling members. The number of limiting members is several and they correspond to the first pressing member, the second pressing member, the third pressing member, and the unified connecting member respectively. The pressing sleeve advances axially as the locking sleeve is threadedly locked with the annular seat. The limiting member is in wedge-shaped fit with the corresponding first pressing member, second pressing member, third pressing member, and unified connecting member, so that the first pressing member, the second pressing member, and the third pressing member press the wire cores and conductors in the corresponding areas, and the filling members penetrate into the wound wire cores.

[0007] In a possible implementation manner, the pressing surface of the first pressing member is planar, the pressing surface of the second pressing member is wavy and integrally arc-shaped, the pressing surface of the third pressing member is arc-shaped, and the number of the first pressing members is several and they are distributed circumferentially along the crimping cavity body.

[0008] In a possible implementation manner, the number of wire cores is two. Placement grooves corresponding to the wire cores one by one are provided in the second crimping area. The clamping heads correspond to the placement grooves one by one, and the clamping head includes symmetrically distributed clamping members. Flexible protrusions are provided on the clamping members, and the clamping members can be deformed. A limiting groove is provided on the crimping cavity body that is not connected to the clamping head, and the limiting groove is used to limit and fix the clamping head.

[0009] In a possible implementation manner, a sealing ring and an extrusion ring are provided on the annular seat. The extrusion ring is slidably connected to the annular seat, cooperates with the sleeve body, and extrudes the sealing ring under the pressing of the sleeve body.

[0010] In a possible implementation manner, through grooves corresponding to the conductors one by one are provided in the third crimping area. After the conductors pass through the through grooves, the parts of the through conductors located outside the through grooves are directly removed.

[0011] In a possible implementation manner, one side of the symmetric crimping cavity body is hingedly connected, and the other side is buckled and connected.

[0012] A connection operation method of a cable connection device is completed by using the foregoing cable connection device, and includes the following steps: S1: Pass the wire cores through the annular seat and place the corresponding ends of the cable body in the annular seat.

[0013] S2: On the basis of S1, first wind the parts of the wire cores corresponding to the first crimping area together and place them in the first crimping area on the crimping cavity body equipped with the clamping members. At the same time, insert the corresponding filling head into the wound wire cores. Then, arrange the wire cores corresponding to the second crimping area independently in the second crimping area and automatically clamp them through the clamping members. Finally, arrange the conductors in the wire cores in the third crimping area.

[0014] S3: On the basis of S2, fixedly connect another crimping chamber body with the crimping chamber body installed with the clamping member together.

[0015] S4: On the basis of S3, fixedly connect the locking sleeve with the annular seat together.

[0016] One or more of the above technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. According to a cable connection device and method provided by the embodiments of the present invention, the wire cores are fixed in the inner joint in three states of being wound around each other, relatively independent, and conductor exposed. Combining the preliminary filling and squeezing of the wound wire cores by the filling head and the secondary in-depth filling and squeezing, as well as the further pressing and fixing of the wire cores in the wound state, independent state, and conductor exposed state by the outer joint, the connection strength, connection stability, and reliability of the cable are fully improved, so that the cable can still maintain a stable and reliable connection state even when the connection of the cable body becomes loose, and at the same time has the advantage of being easy to use.

[0017] 2. According to a cable connection device and method provided by the embodiments of the present invention, before the symmetrical crimping chamber bodies are fixed, the filling head is initially inserted into the wound wire cores, and the clamping head initially fixes the wire cores, so that the wire cores are stably in the current state, which is convenient for the subsequent fixed connection of the symmetrical crimping chamber bodies. After the crimping chamber bodies are connected, the filling head further penetrates into the wound wire cores to squeeze the wire cores, improving the connection firmness. Moreover, one side of the symmetrical crimping chamber bodies is hingedly connected and the other side is buckled and connected, which is convenient for quickly completing the fixed connection. On the basis of fully improving the cable connection strength and stability, the convenience of the connection process is improved. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a cable connection device provided by an embodiment of the present invention.

[0019] Figure 2 is a schematic cross-sectional structure diagram of a sleeve body of a cable connection device provided by an embodiment of the present invention.

[0020] Figure 3 is a schematic structural diagram of a crimping chamber body of a cable connection device provided by an embodiment of the present invention.

[0021] Figure 4 is a schematic diagram of the connection state of wire cores of a cable connection device provided by an embodiment of the present invention.

[0022] Figure 5 is a schematic structural diagram of a limiting member and a first pressing member of a cable connection device provided by an embodiment of the present invention.

[0023] Figure 6 is a schematic structural diagram of a limiting groove and a clamping member of a cable connection device provided by an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of a partial structure in the open state of a symmetrical crimping bin of a cable connection device provided by an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the structure of a second pressing member and a third pressing member of a cable connection device provided by an embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the structure when two cable bodies are connected provided by an embodiment of the present invention.

[0027] In the figure: 1, core; 2, inner joint; 21, crimping bin; 22, first crimping area; 23, second crimping area; 24, third crimping area; 25, filling head; 251, unified connecting piece; 252, filling piece; 26, clamping head; 261, clamping piece; 262, flexible protrusion; 27, placement groove; 28, limiting groove; 29, through groove; 3, cable body; 4, outer joint; 41, annular seat; 42, locking sleeve; 43, pressing sleeve; 431, limiting piece; 432, sleeve body; 44, pressing head; 441, first pressing member; 442, second pressing member; 443, third pressing member; 45, sealing ring; 46, extrusion ring; 5, conductor. Detailed implementation manners

[0028] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0029] Please refer to Figure 1 , Figure 3 and Figure 4 , a cable connection device includes an inner joint 2 for fixing the core 1 and an outer joint 4 for fixing the cable body 3 and strengthening the connection state of the inner joint 2. The core 1 is fixed in the inner joint 2 in three states: being wound around each other, relatively independent, and the conductor 5 being exposed. Combining the further fixation of the cable body 3, the core 1 in the inner joint 2, and the conductor 5 by the outer joint 4 can fully improve the connection strength of the cable and the stability and reliability of the connection. Even when the cable body 3 becomes loose, it can still maintain a stable and reliable connection state, and at the same time has the advantage of being easy to use.

[0030] Refer to Figure 1 , Figure 3 , Figure 4 and Figure 6, the inner joint 2 includes crimping chambers 21 symmetrically distributed up and down. The crimping chambers 21 are sequentially divided into a first crimping zone 22, a second crimping zone 23, and a third crimping zone 24 from left to right. A filling head 25 is arranged in the first crimping zone 22. The filling head 25 includes a unified connecting member 251 and a number of filling members 252. The number of filling members 252 are evenly distributed from left to right and fixedly connected to the unified connecting member 251. Both the unified connecting member 251 and the filling members 252 are slidably connected to the crimping chamber 21 (as shown in Figure 6 ), one end of the filling member 252 is inserted into the wound core 1 and this end is in a tapered structure, as shown in Figure 4 . The number of cores 1 in the cable is two. The filling members 252 are inserted into the wound cores 1. Placement grooves 27 corresponding to the cores 1 one by one are arranged in the second crimping zone 23. Through grooves 29 corresponding to the conductors 5 one by one are arranged in the third crimping zone 24. A clamping head 26 is arranged on the lower crimping chamber 21. The clamping head 26 is located in the second crimping zone 23 and corresponds to the cores 1 one by one. During the cable connection process, first, part of the cores 1 are wound together, then the wound part is pressed into the first crimping zone 22 of the lower crimping chamber 21, and the corresponding ends of the filling members 252 in the first crimping zone 22 are initially inserted into the wound cores 1. Immediately afterwards, the cores 1 are placed in the corresponding placement grooves 27. At this time, the clamping head 26 will automatically clamp the cores 1. Finally, the exposed conductors 5 are placed in the corresponding through grooves 29. At this time, if there is any excess part of the conductor 5, it can be directly removed. Then, the upper crimping chamber 21 is fixedly connected to the lower crimping chamber 21. At this time, the upper first crimping zone 22 and the lower first crimping zone 22 are closed to form a first-level crimping and fixing zone to fix the wound cores 1. Combined with the filling and squeezing of the filling members 252, the wound cores 1 are firmly fixed in the first-level crimping and fixing zone. The placement grooves 27 in the upper second crimping zone 23 and the corresponding placement grooves 27 in the lower second crimping zone 23 are closed to form two independent second-level crimping and fixing zones to fix the cores 1 respectively. The through grooves 29 in the upper third crimping zone 24 and the through grooves 29 in the lower third crimping zone 24 are closed to form two independent third-level crimping and fixing zones to fix the exposed conductors 5 respectively. Through the three-level crimping and fixing, the overall connection strength of the cable is fully improved. Among them, the clamping head 26 is an elastic buckle that will automatically clamp the cores 1, making the cores 1 in a preliminary fixed state, which is convenient for the subsequent upper crimping chamber 21 to be smoothly fixedly connected to the lower crimping chamber 21.

[0031] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, the outer joint 4 includes an annular seat 41 fixedly connected to the lower crimping chamber body 21, a locking sleeve 42 threadedly connected to the annular seat 41, and a pressing sleeve 43 rotatably connected to the locking sleeve 42 and slidably connected to the lower crimping chamber body 21 in the left - right direction. A pressing head 44 is slidably connected to the inside and outside of the crimping chamber body 21, and the pressing head 44 penetrates the crimping chamber body 21. After the symmetrical crimping chamber bodies 21 are fixedly connected, move the pressing sleeve 43 to the left so that it covers the symmetrical crimping chamber bodies 21, and through the threaded connection between the locking sleeve 42 and the annular seat 41, the pressing sleeve 43 is fixedly connected to the crimping chamber body 21. During the threaded connection between the locking sleeve 42 and the annular seat 41, the pressing sleeve 43 limits the filling head 25 and the pressing head 44, so that the pressing head 44 further presses and fixes the wire cores 1 in the first crimping area 22 and the second crimping area 23 and the conductor 5 in the third crimping area 24. The filling member 252 penetrates into the wire cores 1 in the winding state to squeeze the wire cores 1, further improving the stability and reliability of the cable connection as a whole. Among them, the front sides of the symmetrical crimping chamber bodies 21 are hinged together, and the rear sides are buckled together. The annular seat 41 is located at the left end of the crimping chamber body 21. When the locking sleeve 42 is not threadedly connected to the annular seat 41, the locking sleeve 42 and the pressing sleeve 43 are located at the right end of the crimping chamber body 21. In the initial state, the rear sides of the symmetrical crimping chamber bodies 21 are in a disconnected state and the two crimping chamber bodies 21 are in an open state. During the cable connection process, the two wire cores 1 at the right end of the cable body 3 pass through the annular seat 41 and are located in the crimping chamber body 21 until the annular seat 41 is clamped on the right end of the cable body 3. Then, twist the wire cores 1 so that the two wire cores 1 are wound together and placed in the first crimping area 22. Then, place the wire cores 1 in the placement grooves 27 and the through grooves 29 in sequence. Then, rotate the upper crimping chamber body 21 so that it is buckled with the lower crimping chamber body 21, which is convenient and easy to operate.

[0032] The cable connection device provided by the embodiment of the present invention can be used in pairs. In this case, the ends of the two pressing sleeves 43 away from the locking sleeve 42 are fixedly connected together (as Figure 9 shown), and a conductive joint is provided at the connection. The conductors 5 in the wire cores 1 of the two cable bodies 3 are connected together through the conductive joint. The cable connection device provided by the embodiment of the present invention can also be used alone. In this case, an external interface is provided at the end of the pressing sleeve 43 away from the locking sleeve 42, and the conductor 5 in the cable wire core 1 is connected to an external device through the external interface.

[0033] Refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 8, the pressing sleeve 43 includes a sleeve body 432 internally fixedly connected with a limiting member 431. The sleeve body 432 is rotationally connected with the locking sleeve 42 and is slidably connected left and right with the lower pressing chamber body 21. The pressing head 44 includes a first pressing member 441 located in the first pressing area 22, a second pressing member 442 located in the second pressing area 23, and a third pressing member 443 located in the third pressing area 24. The first pressing member 441 and the unified connecting member 251 are circumferentially staggered and the first pressing member 441 is symmetrically distributed left and right (as Figure 6 shown). The number of the second pressing members 442 and the third pressing members 443 on each pressing chamber body 21 is two and corresponds to the wire cores 1 one by one. The second pressing members 442 and the third pressing members 443 on the symmetric pressing chamber bodies 21 are symmetrically distributed up and down. The number of the limiting members 431 is several and corresponds to the first pressing member 441, the second pressing member 442, the third pressing member 443, and the unified connecting member 251 respectively. The sizes and installation positions of the limiting members 431 corresponding to the first pressing member 441, the second pressing member 442, the third pressing member 443, and the unified connecting member 251 are different. The pressing sleeve 43 feeds axially as the locking sleeve 42 and the annular seat 41 are threadedly locked. The limiting members 431 are in wedge-shaped fit with the corresponding first pressing member 441, second pressing member 442, third pressing member 443, and unified connecting member 251, so that the first pressing member 441, the second pressing member 442, and the third pressing member 443 press the wire cores 1 and the conductors 5 in the corresponding areas, and the filling member 252 deeply squeezes and winds the wire cores 1. Taking the first pressing member 441 as an example, as Figure 5 shown, inclined limiting surfaces are provided on both the first pressing member 441 and the limiting member 431. The limiting surfaces gradually move away from the axis of the pressing chamber body 21 from right to left. When the pressing sleeve 43 moves leftward, the limiting surface of the corresponding limiting member 431 wedges with the limiting surface of the first pressing member 441 and makes the first pressing member 441 move into the pressing chamber body 21 for pressing work. The same applies to the second pressing member 442, the third pressing member 443, and the unified connecting member 251. Among them, the first pressing member 441 is of a plate-like structure and is distributed along the circumference of the pressing chamber body 21. The second pressing member 442 is of an arc-shaped structure provided with a wavy pressing surface. The third pressing member 443 is of an arc-shaped structure. Inclined limiting surfaces are provided on both the second pressing member 442 and the third pressing member 443. The corresponding limiting members 431 make the second pressing member 442 and the third pressing member 443 move and perform pressing work by fitting with the limiting surfaces on the corresponding second pressing member 442 and third pressing member 443 (as Figure 8 shown).

[0034] Refer to Figure 3 , Figure 4 , Figure 6 and Figure 7 , a limiting groove 28 is provided on the upper pressing chamber body 21. The limiting groove 28 is used to limit and fix the clamping head 26, asFigure 6 As shown, the clamping head 26 includes symmetrically distributed clamping members 261. Flexible protrusions 262 are provided on the clamping members 261. The clamping members 261 can be deformed. During the buckling process of the crimping housing 21, the limiting groove 28 automatically limits the clamping head 26, enabling the clamping head 26 to further stably clamp the wire core 1 and improving the stability of the wire core 1.

[0035] Refer to Figure 1 、 Figure 3 and Figure 7 , a sealing ring 45 and an extrusion ring 46 are provided on the annular seat 41. The left side surface of the sealing ring 45 is fixedly connected to the annular seat 41. The extrusion ring 46 is slidably connected to the annular seat 41 in the left and right directions and cooperates with the sleeve body 432 and extrudes the sealing ring 45 under the pressing of the sleeve body 432. As Figure 5 shown, during the process of the sleeve body 432 feeding leftward along with the threaded connection between the locking sleeve 42 and the annular seat 41, the sleeve body 432 will contact the extrusion ring 46 and tighten the sealing ring 45 through the extrusion ring 46, enabling the sealing ring 45 to be tightly connected to the cable body 3 together, improving the connection strength and connection tightness of the cable. Here, sealant can be applied at the connection between the annular seat 41 and the cable body 3 as needed to further improve the overall tightness.

[0036] A connection operation method of a cable connection device is completed by using a cable connection device, including the following steps: S1: Pass the wire core 1 through the annular seat 41 and place the corresponding end of the cable body 3 in the annular seat 41.

[0037] S2: On the basis of S1, first wind the part of the wire core 1 corresponding to the first crimping area 22 together and place it in the first crimping area 22 on the crimping housing 21 equipped with the clamping head 26. At the same time, insert the corresponding filling head 25 into the wound wire core 1. Then, independently arrange the wire core 1 corresponding to the second crimping area 23 in the second crimping area 23 and automatically clamp it through the clamping head 26. Finally, arrange the conductor 5 in the wire core 1 in the third crimping area 24.

[0038] S3: On the basis of S2, fixedly connect another crimping housing 21 to the crimping housing 21 equipped with the clamping head 26.

[0039] S4: On the basis of S3, fixedly connect the locking sleeve 42 to the annular seat 41.

[0040] In an embodiment of the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of the present invention, it should also be noted that, unless otherwise clearly specified or limited, the terms "arranged", "connected", "installed" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, an integral connection or a sliding connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A cable connection device, characterized in that: The invention comprises an inner connector (2) for fixing a wire core (1), wherein the inner connector (2) comprises a symmetrically distributed crimping chamber (21), wherein a first crimping area (22), a second crimping area (23) and a third crimping area (24) are sequentially arranged in the crimping chamber (21), and the wire core (1) passes through the first crimping area (22), the second crimping area (23) and the third crimping area (24) sequentially; The wire cores (1) in the first crimping zone (22) are in a tangled state, the wire cores (1) in the second crimping zone (23) are in an independent state, and the wire cores (1) in the third crimping zone (24) are in a conductor (5) exposed state, and the symmetrical crimping chamber (21) is pressed and fixed to preliminarily tighten and fix the tangled wire cores (1), the independent wire cores (1) and the conductor (5) exposed state; A filling head (25) is provided in the first crimping area (22) and is slidably connected to the crimping chamber (21). One end of the filling head (25) is inserted into the wound wire core (1) and the end is in a conical structure. A clamping head (26) for preliminarily fixing the wire core (1) is provided in one of the second crimping areas (23). An external connector (4) is used to fix the cable body (3) and reinforce the connection state of the internal connector (2), wherein the external connector (4) comprises an annular seat (41) fixedly connected to one of the crimping chamber bodies (21), a locking sleeve (42) threadedly connected to the annular seat (41), and a compression sleeve (43) rotatably connected to the locking sleeve (42); A clamping head (44) passes through and is slidably connected to the crimping chamber body (21); the clamping sleeve (43) is fed in the axial direction as the locking sleeve (42) and the annular seat (41) are threadedly locked, and in the process, the filling head (25) and the clamping head (44) are limited, so that the clamping head (44) clamps and fixes the wire cores (1) in the crimping zone 1 (22) and the crimping zone 2 (23) and the conductors (5) in the crimping zone 3 (24), and the filling head (25) penetrates into the wire cores (1) in a crimping state to perform secondary filling and clamping.

2. A cable connection device according to claim 1, characterized in that: The compression sleeve (43) comprises a sleeve body (432) with a limiting member (431) arranged inside, the compression head (44) comprises a first compression member (441) located in the first compression zone (22), a second compression member (442) located in the second compression zone (23), and a third compression member (443) located in the third compression zone (24), the filling head (25) comprises a unified connecting member (251) and a plurality of filling members (252), the limiting members (431) are in plurality and are respectively connected to the first compression member (441), the second compression member (442), and the third compression member ( The locking sleeve (42) and the annular seat (41) are threadedly locked and the clamping sleeve (43) is fed in the axial direction. The limiting member (431) is wedge-matched with the corresponding first clamping member (441), the second clamping member (442), the third clamping member (443) and the unified connecting member (251), so that the first clamping member (441), the second clamping member (442), the third clamping member (443) compress the wire core (1) and the conductor (5) in the corresponding area, and the filling member (252) is deeply wound into the wire core (1).

3. A cable connection device according to claim 2, characterized in that: The pressing surface of the first pressing piece (441) is planar, the pressing surface of the second pressing piece (442) is wavy and arc-shaped as a whole, the pressing surface of the third pressing piece (443) is arc-shaped, and there are a plurality of first pressing pieces (441) distributed along the circumference of the crimping chamber (21).

4. A cable connection device according to claim 1, characterized in that: The number of the wire cores (1) is two, and a placement groove (27) corresponding to the wire cores (1) is provided in the second crimping area (23), and the clamping head (26) corresponds to the placement groove (27) one by one, and the clamping head (26) includes symmetrically distributed clamping parts (261), and the clamping parts (261) are provided with flexible protrusions (262), and the clamping parts (261) can be deformed. A limiting groove (28) is provided on the crimping bin body (21) that is not connected to the clamping head (26), and the limiting groove (28) is used to limit and fix the clamping head (26).

5. A cable connection device according to claim 1, characterized in that: The annular seat (41) is provided with a sealing ring (45) and an extrusion ring (46); the left side surface of the sealing ring (45) is fixedly connected to the annular seat (41); the extrusion ring (46) is slidably connected to the annular seat (41) and cooperates with the sleeve body (432) to squeeze the sealing ring (45) under the tight contact of the sleeve body (432).

6. A cable connection device according to claim 1 or 4, characterized in that: The crimping third area (24) is provided with through slots (29) corresponding to the conductors (5) one by one, and after the conductors (5) pass through the through slots (29), the portion of the conductors (5) outside the through slots (29) is directly removed.

7. A cable connection device according to claim 1, characterized in that: The symmetrical crimping bin body (21) is hinged on one side and buckled on the other side.

8. A method for connecting a cable connection device, which is accomplished by using the cable connection device according to claim 1, characterized in that: The following steps are involved: S1: Pass the wire core (1) through the annular seat (41) and place the corresponding end of the cable body (3) in the annular seat (41); S2: Based on S1, the wire core (1) and the portion corresponding to the first crimping zone (22) are firstly wound together and placed in the first crimping zone (22) on the crimping chamber (21) equipped with a clamping head (26), and at the same time, the corresponding filling head (25) is inserted into the wound wire core (1), and then the wire core (1) corresponding to the second crimping zone (23) is independently arranged in the second crimping zone (23) and automatically clamped by the clamping head (26), and finally the conductor (5) in the wire core (1) is arranged in the third crimping zone (24); S3: On the basis of S2, another crimping bin body (21) is fixedly connected to the crimping bin body (21) equipped with the clamping head (26); S4: On the basis of S3, the locking sleeve (42) and the annular seat (41) are fixedly connected together.

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