A cable connection structure that is easy to install

Abstract

The application discloses a cable connecting structure convenient to install and relates to the technical field of new energy vehicles.The cable connecting structure comprises a male end assembly, a female end assembly and a fastening nut.The female end assembly comprises an end cover fixedly arranged on a power supply device, a female terminal is arranged in the cavity of the end cover, and one end of the female terminal is fixedly connected with a power supply female bus of the power supply device after penetrating through the shell of the power supply device.The male end assembly comprises a cable, the end of the core body of the cable is fixedly provided with a male terminal, the male terminal is inserted into a first plug-in hole of the female terminal after penetrating through a mounting hole arranged on the end cover, a shielding pressing sleeve is fixedly arranged on the cable, the shielding pressing sleeve comprises a main cylinder body, and a first boss is arranged on the outer cylindrical surface of the main cylinder body.The end of the fastening nut, which faces the end cover, is threadedly connected with the end cover, a pressing plate is arranged on the side of the fastening nut, which faces away from the end cover, and the pressing plate is pressed on the first boss.The connecting structure simplifies the installation process of the cable and improves the installation efficiency of the cable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of new energy vehicles, in particular to a cable connection structure convenient to install. BACKGROUND

[0002] A high-voltage cable connection system of a new energy vehicle is in a high-voltage and high-current state during work, so a cable connection structure currently applied to the new energy vehicle generally adopts a bolt mounting mode.

[0003] As shown in Figs. Figure 9 and Figure 10 When the cable connection structure is installed, the cable 21 needs to be first inserted into the socket 911 of the connector base 91, so that the copper nose connecting piece 96 at the front end of the cable 21 is inserted into the female connecting block 97, and the connecting hole of the copper nose connecting piece 96 is coaxial with the connecting hole of the female connecting block. Then, the gland head 92 is tightened, and the compression bolt 93 is locked, so that the end of the compression bolt is inserted into the connecting hole of the copper nose connecting piece 96. Then, the upper cover 94 is installed, and the upper cover 94 is locked with the connector base 91 through the installation screw 95. The disassembly process is the same, and will not be described here.

[0004] The installation structure of the cable causes inconvenience and low efficiency in the installation and disassembly of the cable. SUMMARY

[0005] In view of the above problems, the application provides a cable connection structure convenient to install, which effectively simplifies the installation process of the cable and improves the installation efficiency of the cable.

[0006] The technical scheme adopted by the application to solve the technical problems is:

[0007] The cable connection structure convenient to install comprises a male component, a female component and a fastening nut.

[0008] The female component comprises an end cover fixedly arranged on a power supply device, a female terminal is arranged in the cavity of the end cover, and one end of the female terminal is fixedly connected with a power supply female bus of the power supply device after penetrating through the shell of the power supply device.

[0009] The male component comprises a cable, a male terminal is fixedly arranged at the end of the core body of the cable, and the male terminal is inserted into a first plug-in hole of the female terminal after penetrating through a mounting hole arranged on the end cover, a shielding compression sleeve is fixedly arranged on the cable, the shielding compression sleeve comprises a main cylinder body, and a first boss is arranged on the outer cylindrical surface of the main cylinder body.

[0010] The fastening nut comprises a connecting body coaxially arranged with the shielding pressure sleeve, one end of the connecting body is threadedly connected with the end cover, and a pressing plate is arranged on the side of the connecting body away from the end cover and is pressed on the first boss.

[0011] In a feasible implementation, a mounting block is arranged in the cavity of the end cover, one end of the female terminal is fixedly connected with the power supply female bus of the power supply device after sequentially penetrating through the mounting block and the shell of the power supply device, a second avoiding hole for accommodating the female terminal is arranged on the mounting block, the mounting block and the end cover jointly form a mounting cavity for accommodating the female terminal, and the mounting cavity is matched with the shape of the part of the female terminal located in the end cover.

[0012] In a feasible implementation, a positioning recess is arranged on the female terminal, and a positioning protrusion matched with the positioning recess is arranged on the side of the cavity of the end cover.

[0013] In a feasible implementation, the male terminal comprises a plug body fixedly connected with the end of the core of the cable, a second boss is arranged on the outer cylindrical surface of the plug body, and the second boss is pressed on the female terminal under the pressing action between the fastening nut and the shielding pressure sleeve.

[0014] In a feasible implementation, the core of the cable is exposed at the end of the female terminal, a second plug hole is arranged on the end of the plug body away from the female terminal, the exposed core of the cable is inserted into the second plug hole, and the core is fixedly connected with the male terminal by crimping.

[0015] In a feasible implementation, the male terminal assembly further comprises an insulating sheath sleeved on the cable, one end of the insulating sheath abuts against the second boss, and the other end of the insulating sheath abuts against the end face of the side of the shielding pressure sleeve facing the end cover.

[0016] In a feasible implementation, a first sealing ring is arranged between the end cover and the power supply device, one end of the main cylinder body is inserted into the mounting hole and is sealingly connected with the mounting hole through a second sealing ring, a cold shrink waterproof accessory is sleeved between the end of the shielding pressure sleeve away from the end cover and the cable, one end of the cold shrink waterproof accessory is tightly clamped on the main cylinder body, and the other end of the cold shrink waterproof accessory is tightly clamped on the cable.

[0017] In one feasible implementation, the end of the main cylinder facing the end cap has a first conical structure, and the diameter of the first conical structure gradually increases in the direction away from the end cap; the end of the main cylinder facing away from the end cap has a second conical structure, and the diameter of the second conical structure gradually decreases in the direction away from the end cap.

[0018] In one feasible implementation, the end cover includes a base plate and a side plate, which together form a cavity with the open end facing the power supply equipment, and the mounting hole is provided on the side plate of the end cover.

[0019] In one feasible implementation, the mounting hole is arranged coaxially with the first insertion hole.

[0020] The beneficial effects of this invention are:

[0021] This application provides an easy-to-install cable connection structure. During cable installation and disassembly, only the tightening nut needs to be turned, which simplifies the operation and improves the efficiency of cable installation. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of a cable connection structure that is easy to install, provided as an embodiment of this application;

[0023] Figure 2 A top view of a cable connection structure that is easy to install, provided in an embodiment of this application;

[0024] Figure 3 for Figure 2 AA section view in the middle;

[0025] Figure 4 for Figure 3 A magnified structural diagram of part A in the middle;

[0026] Figure 5 for Figure 3 A magnified structural diagram of part B in the middle section;

[0027] Figure 6 for Figure 2 BB section view in the middle;

[0028] Figure 7 for Figure 6 A magnified structural diagram of section C;

[0029] Figure 8 An exploded view of a cable connection structure for easy installation, provided in one embodiment of the application;

[0030] Figure 9 An exploded view of a traditional cable connection structure;

[0031] Figure 10 Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0032] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0033] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0034] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0035] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0036] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0037] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0038] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0039] Figure 1 is a cross-sectional view of a conventional cable connection structure.

[0040] Figure 1 is a cross-sectional view of a conventional cable connection structure. DETAILED DESCRIPTION

[0041] In order to make the person skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below in combination with the drawings in the embodiments of the present application, and the described embodiments are only some of the embodiments of the present application, not all the embodiments. All other embodiments obtained by the person skilled in the art without creative labor on the basis of the embodiments of the present application shall belong to the protection scope of the present application.

[0042] Embodiment one

[0043] For the convenience of description, the coordinate system is defined as shown in Figure 1 and the left-right direction is transverse, the front-back direction is longitudinal, and the up-down direction is vertical.

[0044] As shown in Figure 1As shown in the drawings, a cable connection structure convenient to install comprises a female end assembly 1, a male end assembly 2 and a fastening nut 3 for connecting the male end assembly 2 and the female end assembly 1.

[0045] As shown in the drawings, Figure 2 , Figure 3 and Figure 8 , the female end assembly 1 comprises an end cover 11 fixedly arranged on a power supply device 4. The end cover 11 is internally provided with a cavity having an open end, the open end of the cavity of the end cover 11 faces the power supply device 4 and is closed by the power supply device 4.

[0046] As a specific embodiment, the end cover 11 is made by one-piece injection molding, and the open end of the end cover 11 is provided with a connecting lug plate 111, which is fixedly connected with the power supply device 4 through a first bolt assembly 5.

[0047] The cavity is internally provided with a female terminal 12, one end of which is fixedly connected with a power supply female bus 41 of the power supply device 4 through a second bolt assembly 6 after passing through a shell of the power supply device 4. The shell of the power supply device 4 is provided with a first avoiding hole 42 for accommodating the female terminal 12.

[0048] The end cover 11 is provided with a mounting hole 112 for accommodating the male end assembly 2, and the mounting hole 112 is in communication with the cavity. The female terminal 12 is provided with a first plug-in hole 121, and the first plug-in hole 121 is coaxially arranged with the mounting hole 112.

[0049] As a specific embodiment, as shown in the drawings, Figure 2 and Figure 3 , the end cover 11 in the embodiment comprises a bottom plate, four edges of the bottom plate are respectively provided with side plates extending towards the side close to the power supply device 4 perpendicularly to the bottom plate, and the bottom plate and the side plates jointly form a cavity with the open end facing the side of the power supply device 4. The mounting hole 112 is arranged on the side plate of the end cover 11. Exemplarily, the mounting hole 112 is arranged on the side plate of the end cover 11 located at the front side. For the convenience of description, the side plate located at the front side is defined as a front side plate according to the coordinate system as shown in the drawings, and the side plate located at the rear side is defined as a rear side plate, the side plate located at the left side is defined as a left side plate and the side plate located at the right side is defined as a right side plate. The first plug-in hole 121 is a through hole, that is, it penetrates the female terminal 12 along the front-rear direction. Figure 1

[0050] Further, as shown in the drawings, Figure 3 , Figure 6 and Figure 8 ​As shown, the cavity of the end cover 11 is provided with a mounting block 13, and one end of the female terminal 12 is fixedly connected with the power supply busbar 41 of the power supply device 4 through the second bolt assembly 6 after sequentially passing through the mounting block 13 and the shell of the power supply device 4. The mounting block 13 is provided with a second avoiding hole 131 for accommodating the female terminal 12. The mounting block 13 and the end cover 11 jointly form a mounting cavity for accommodating the female terminal 12, and the shape of the mounting cavity is consistent with the part of the female terminal 12 located in the end cover 11.

[0051] The reason for such design is that, by making the shape of the mounting cavity consistent with the part of the female terminal 12 located in the end cover 11, the female terminal 12, the end cover 11 and the mounting block 13 form a combined whole, so that as long as the first bolt assembly 5 between the end cover 11 and the power supply device 4 is not loose, the second bolt assembly 6 for connecting the female terminal 12 and the power supply busbar 41 of the power supply device 4 will not be loose. Therefore, in the process of daily maintenance, it is only necessary to check whether the first bolt assembly 5 located outside is loose to determine the reliability of the connection between the female terminal and the power supply device 4. It can be imagined that, if the shape of the mounting cavity is not consistent with the part of the female terminal 12 located in the end cover 11, i.e. there is no positioning connection relationship between the female terminal 12 and the end cover 11 and the mounting block 13. Due to the variety of road conditions, the female terminal 12 will inevitably vibrate during work. As a result, the second bolt assembly 6 for connecting the female terminal 12 and the power supply device 4 will be loose over time. Since the second bolt assembly 6 is located inside the power supply device 4, the shell of the power supply device 4 needs to be opened during maintenance, and whether it can be achieved or not, even if it can be achieved, the maintenance process is very cumbersome.

[0052] In addition, the mounting block 13 is arranged in the cavity of the end cover 11, the mounting cavity is jointly formed by the second avoiding hole 131 of the mounting block 13 and the part of the end cover 11 located below the mounting block 13, which facilitates the installation of the female terminal 12 and provides more space and possibilities for the structural design of the female terminal 12.

[0053] Further, as shown in Figure 6 and Figure 7 The female terminal 12 is provided with a positioning groove 122, and the side of the cavity of the end cover 11 is provided with a positioning protrusion 113 matched with the positioning groove 122.

[0054] As a specific embodiment, the left and right sides of the female terminal 12 are provided with the positioning groove 122, and the positioning groove 122 penetrates the female terminal 12 in the front-rear direction. Here, the positioning groove 122 can also be arranged on the front and rear sides of the female terminal 12.

[0055] The reason for this design is that the power supply busbar 41 of the power supply device 4 can be arranged on the upper side of the power supply device 4 or on the lower side of the power supply device 4. When the power supply busbar 41 is arranged on the upper side of the power supply device 4, the opening of the cavity is downward when the end cap 11 is installed. By arranging the positioning groove 122 and the positioning protrusion 113, the female terminal 12 can be installed in the cavity of the end cap 11 first, and then the end cap 11 is installed upside down on the power supply device 4, so that the female terminal 12 does not fall out of the cavity during installation, facilitating installation.

[0056] Further, as shown in Figure 3 and Figure 6 , the end cap 11 and the power supply device 4 are provided with a first sealing ring 7, so as to achieve the effect of waterproofing.

[0057] As shown in Figure 3 and Figure 8 , the male terminal assembly 2 includes a cable 21, one end of the cable 21 is exposed to the core 211 of the female terminal 12, and the core 211 is fixedly provided with a male terminal 22. As a specific embodiment, the male terminal 22 in the embodiment includes a cylindrical plug body 221, the end of the plug body 221 away from the female terminal 12 is provided with a second plug hole 2211, the exposed core 211 of the cable 21 is inserted into the second plug hole 2211 and is fixedly connected with the male terminal 22 by crimping. The end of the plug body 221 towards the female terminal 12 is inserted into the first plug hole 121 of the female terminal 12. The electrical connection between the cable 21 and the power supply busbar 41 of the power supply device 4 is achieved. That is, the male terminal 22 is in close contact with the core 211 of the cable 21, the male terminal 22 is in close contact with the female terminal 12, and the current of the power supply device 4 can flow into the cable 21 through the male terminal 22 and the female terminal 12, achieving the transmission of electric energy.

[0058] The cable 21 is provided with a shielding sleeve 23, and the shielding sleeve 23 is fixedly connected with the cable 21. As a specific embodiment, the shielding sleeve 23 in the embodiment is fixedly connected with the cable 21 by crimping.

[0059] The shielding sleeve 23 includes a main cylinder 231, the main cylinder 231 is sleeved on the cable 21 and is fixedly connected with the cable 21 by crimping. The outer cylindrical surface of the main cylinder 231 is provided with a first annular boss 232.

[0060] The fastening nut 3 comprises a connecting body 31 in a cylindrical structure, and the connecting body 31 is coaxially arranged with the shielding sleeve 23. An inner thread is arranged on the inner cylindrical surface of the connecting body 31 in a line, and a flat mouth matched with a wrench is arranged on the outer surface of the connecting body 31. In the embodiment, the outer surface of the connecting body 31 is a regular hexagon. One end of the connecting body 31 towards the end cover 11 is threadedly connected with the end cover 11, and a ring-shaped pressing plate 32 is arranged on the side of the connecting body 31 away from the end cover 11, and the pressing plate 32 is pressed on the first boss 232 of the shielding sleeve 23 under the locking force between the connecting body 31 and the end cover 11.

[0061] As a specific embodiment, the outer surface of the front plate of the end cover 11 is provided with a ring-shaped connecting cylinder 114 coaxially arranged with the mounting hole 112, and the inner diameter of the connecting cylinder 114 is the same as the diameter of the mounting hole 112. The outer surface of the connecting cylinder 114 is provided with an outer thread matched with the fastening nut 3.

[0062] Further, as shown in the drawings, Figure 5 the outer cylindrical surface of the plug body 221 is provided with a ring-shaped second boss 222, and under the pressing action between the fastening nut 3 and the shielding sleeve 23, the second boss 222 is pressed on the female terminal 12. In this way, on the one hand, the tightness of the contact between the male terminal 22 and the female terminal 12 can be ensured, and on the other hand, the contact area between the male terminal 22 and the female terminal 12 can be increased, ensuring the passage of a large current.

[0063] Further, as shown in the drawings, Figure 4 and Figure 5 the cable 21 is sleeved with an insulating sheath 24 between the male terminal 22 and the shielding sleeve 23, one end of the insulating sheath 24 abuts against the second boss 222, and the other end of the insulating sheath 24 abuts against the end surface of the shielding sleeve 23 towards the end cover 11.

[0064] Further, as shown in the drawings, Figure 3 and Figure 4 one end of the main cylinder body 231 towards the end cover 11 is inserted into the mounting hole 112, and the main cylinder body 231 towards the end cover 11 is sleeved with a second sealing ring 8, and the sealing connection between the mounting hole 112 and the main cylinder body 231 is realized through the second sealing ring 8.

[0065] Further, the end of the main cylinder 231 towards the end cover 11 is in a first taper structure, and the diameter of the first taper structure gradually increases in the direction away from the end cover 11. In this way, with the tightening of the fastening nut 3, the end of the main cylinder 231 of the shielding pressure sleeve 23 will gradually insert into the mounting hole 112, at this time, the second sealing ring 8 will be extruded, thereby tightly locking the gap between the shielding pressure sleeve 23 and the side of the mounting hole 112, achieving the waterproof effect.

[0066] Further, as shown in Figure 3 and Figure 4 , a cold shrink waterproof accessory 25 is sleeved between the end of the shielding pressure sleeve 23 away from the end cover 11 and the cable 21, one end of the cold shrink waterproof accessory 25 is clamped on the main cylinder 231 of the shielding pressure sleeve 23, and the other end of the cold shrink waterproof accessory 25 is clamped on the cable 21.

[0067] Further, the end of the main cylinder 231 away from the end cover 11 is in a second taper structure, and the diameter of the second taper structure gradually decreases in the direction away from the end cover 11. In this way, with the tightening of the fastening nut 3, the gap between the pressing plate 32 and the main cylinder 231 gradually decreases, at this time, the cold shrink waterproof accessory 25 is extruded, thereby tightly locking the gap between the main cylinder 231 of the shielding pressure sleeve 23 and the pressing plate 32 of the fastening nut 3, achieving the waterproof effect.

[0068] When installing the cable 21, the fastening nut 3 is screwed, and through the threaded connection between the fastening nut 3 and the end cover 11, the fastening nut 3 will push the shielding pressure sleeve 23 to move towards the female terminal 12. Since the shielding pressure sleeve 23 is fixedly connected with the cable 21, the cable 21 will move towards the female terminal 12 under the action of the shielding pressure sleeve 23, until the insertion body 221 of the male terminal 22 is inserted into the first insertion hole 121 of the female terminal 12, and the second boss 222 is pressed against the female terminal 12, so that the male terminal 22 and the female terminal 12 are tightly combined.

[0069] Similarly, when disassembling, the fastening nut 3 is screwed, and the fastening nut 3 is detached from the end cover 11, and the male terminal assembly 2 can be pulled out as a whole, realizing the disassembly of the cable 21.

[0070] As can be seen from the above description, the cable connection structure convenient to install in the present application only needs to operate the fastening nut 3 when installing and disassembling the cable 21, and the operation process is simple.

[0071] Example Two

[0072] The mounting hole 112 is arranged on the bottom plate of the end cover 11, and the first plug-in hole 121 arranged on the female terminal 12 is a blind hole with an opening facing the bottom plate side.

[0073] The rest of the structure is the same as that of Example One.

[0074] Other embodiments obtained by combining, splitting, recombining, etc. of the embodiments provided in the present application by those skilled in the art on the basis of the embodiments provided in the present application do not exceed the protection scope of the present application.

[0075] The above detailed description of the embodiments of the present application has explained the purposes, technical solutions and beneficial effects of the embodiments of the present application, and the above is only a specific implementation of the embodiments of the present application and is not used to limit the protection scope of the embodiments of the present application, i.e. any modification, equivalent replacement, improvement, etc. made on the basis of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A cable connection structure which is easy to install, characterized by: The utility model provides a power supply cable connector, which comprises a female end assembly (1), a male end assembly (2) and a fastening nut (3). The female end assembly (1) comprises an end cover (11) fixedly arranged on a power supply device (4), a female terminal (12) arranged in the cavity of the end cover (11), and one end of the female terminal (12) fixedly connected with a power supply female bus (41) of the power supply device (4) after penetrating through the shell of the power supply device (4). The male end assembly (2) comprises a cable (21), the end of the core (211) of the cable (21) is fixedly provided with a male terminal (22), the male terminal (22) is inserted into a first plug hole (121) of the female terminal (12) after penetrating through a mounting hole (112) arranged on the end cover (11), and a shielding compression sleeve (23) is fixedly arranged on the cable (21), the shielding compression sleeve (23) comprises a main cylinder (231), and a first boss (232) is arranged on the outer cylindrical surface of the main cylinder (231). The fastening nut (3) comprises a connecting main body (31) coaxially arranged with the shielding compression sleeve (23), one end of the connecting main body (31) towards the end cover (11) is threadedly connected with the end cover (11), a compression plate (32) is arranged on the side of the connecting main body (31) away from the end cover (11), and the compression plate (32) is compressed on the first boss (232). An installation block (13) is arranged in the cavity of the end cover (11), one end of the female terminal (12) is fixedly connected with the power supply female bus (41) of the power supply device (4) after penetrating through the installation block (13) and the shell of the power supply device (4) in sequence, a second avoiding hole (131) for accommodating the female terminal (12) is arranged on the installation block (13), the installation block (13) and the end cover (11) jointly form an installation cavity for accommodating the female terminal (12), and the installation cavity is matched with the shape of the part of the female terminal (12) located in the end cover (11). The male terminal (22) comprises a plug body (221), the plug body (221) is fixedly connected with the end of the core (211) of the cable (21), a second boss (222) is arranged on the outer cylindrical surface of the plug body (221), and the second boss (222) is compressed on the female terminal (12) under the compression action between the fastening nut (3) and the shielding compression sleeve (23).

2. The cable connection structure of claim 1, wherein: The female terminal (12) is provided with a positioning groove (122), and the side surface of the cavity of the end cover (11) is provided with a positioning protrusion (113) matched with the positioning groove (122).

3. The cable connection structure of claim 1, wherein: The cable (21) is exposed at one end of the female terminal (12), and the end of the plug body (221) away from the female terminal (12) is provided with a second plug hole (2211), the exposed core (211) of the cable (21) is inserted into the second plug hole (2211) and is fixedly connected with the male terminal (22) by crimping.

4. The cable connection structure of claim 1, wherein: The male terminal assembly (2) further comprises an insulating sheath (24) sleeved on the cable (21), one end of the insulating sheath (24) abuts against the second boss (222), and the other end of the insulating sheath (24) abuts against the end face of the shielding sleeve (23) on the side of the end cover (11).

5. The cable connection structure of claim 1, wherein: The first sealing ring (7) is arranged between the end cover (11) and the power supply device (4), the end of the main cylinder (231) on the side of the end cover (11) is inserted into the mounting hole (112) and is sealingly connected with the mounting hole (112) through the second sealing ring (8), the cold shrink waterproof accessory (25) is sleeved between the end of the shielding sleeve (23) away from the end cover (11) and the cable (21), one end of the cold shrink waterproof accessory (25) is tightly clamped on the main cylinder (231), and the other end of the cold shrink waterproof accessory (25) is tightly clamped on the cable (21).

6. A cable connection structure for facilitating installation according to claim 5, wherein: The end of the main cylinder (231) on the side of the end cover (11) is in a first conical surface structure, and the diameter of the first conical surface structure gradually increases in the direction away from the end cover (11), the end of the main cylinder (231) away from the end cover (11) is in a second conical surface structure, and the diameter of the second conical surface structure gradually decreases in the direction away from the end cover (11).

7. The cable connection structure of claim 1, wherein: The end cover (11) comprises a bottom plate and a side plate, and the bottom plate and the side plate jointly form a cavity with an open end on the side of the power supply device (4), and the mounting hole (112) is arranged on the side plate of the end cover (11).

8. The cable connection structure of claim 1, wherein: The mounting hole (112) is coaxially arranged with the first plug hole (121). The mounting hole (112) is coaxially arranged with the first plug hole (121).

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