Terminal-equipped electric wire and wire harness

Abstract

The utility model discloses a kind of terminal electric wire and wire harness, including the electric wire main body of multiple compositions, the front end of the electric wire main body is equipped with electric wire terminal, the rear end of the electric wire terminal is equipped with terminal socket, the end of the electric wire main body is inserted in terminal socket, the electric wire terminal includes terminal upper cover and terminal lower cover;The terminal socket is formed by the upper and lower splicing of the terminal upper cover and terminal lower cover, the terminal upper cover and terminal lower cover are clamped by clamping structure between, its terminal uses the structure of the upper and lower splicing of terminal upper cover and terminal lower cover, and is connected by the clamping structure of the clamping block and the clamping groove, compared with traditional integrated injection molding terminal, it can be conveniently disassembled and assembled.When electric wire main body is damaged, just open clamping structure, electric wire main body can be replaced or repaired, without overall replacement terminal, greatly reduce use and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of wire technology, specifically to a wire with terminals and a wire harness. Background Technology

[0002] In numerous fields such as electronic equipment, automobile manufacturing, and electrical control systems, terminald wires are used as key connection components for signal transmission and power supply. Their applications are becoming increasingly widespread, and the requirements for connection stability, safety, and service life are constantly increasing. Current terminald wires on the market have several shortcomings in structural design and practical use. Firstly, regarding the connection structure between the terminal and the wire body, traditional terminals often use integrated injection molding or simple snap-fit ​​connections. Integrated injection-molded terminals are difficult to disassemble and repair if the wire body is damaged, requiring replacement of the entire unit, increasing operating costs. Simple snap-fit ​​connections often lack effective anti-detachment and cushioning designs. Under long-term vibration, temperature changes, or external pulling, the snaps are prone to loosening or even falling off, leading to connection failure between the wire body and the terminal. This affects the stability of signal transmission or power supply, and in severe cases, may cause equipment malfunction. Therefore, improvements to existing technologies are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a wire and wire harness with terminals to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a terminal wire, comprising a main body of multiple wires, with a terminal assembled at the front end of the main body and a terminal socket at the rear end of the terminal. The end of the main body of the wire is inserted into the terminal socket. The terminal includes an upper terminal cover and a lower terminal cover. The upper and lower terminal covers are joined together to form the terminal socket. The upper and lower terminal covers are connected by a snap-fit ​​structure. The snap-fit ​​structure includes snap blocks installed on the left and right sides of the bottom of the upper terminal cover and snap grooves opened on the left and right sides of the top of the lower terminal cover. The snap blocks are snapped into the snap grooves. A protective gasket is provided on the outer wall of the terminal socket, and the protective gasket is sleeved on the outside of the main body of the wire.

[0005] As a preferred embodiment of the present invention, the outer walls of both sides of the card block are provided with inclined convex surfaces, and the inner walls of both sides of the card slot are provided with inclined concave surfaces, the inclined convex surfaces and the inclined concave surfaces cooperating with each other.

[0006] As a preferred embodiment of the present invention, the card block has a filling cavity inside, and an arched elastic plate is assembled inside the filling cavity.

[0007] As a preferred embodiment of the present invention, the protective gasket ring has a sealed cavity inside, an insulating pad is installed inside the sealed cavity, and an insulating protective layer is provided on the inner wall of the protective gasket ring.

[0008] As a preferred embodiment of the present invention, the outer wall of the protective pad ring is provided with a smooth surface, and the end of the locking block is provided with rounded corners.

[0009] As a preferred embodiment of the terminal wire and harness of this utility model, inserts are installed on both outer walls of the terminal cover, and elastic blocks are provided at the ends of the inserts. Terminal slots are provided at the front ends of the terminal cover and the terminal lower cover.

[0010] As a preferred embodiment of the present invention, the wire and wire harness with terminals are provided with an outer sheath.

[0011] A wire harness includes a wire harness body formed by multiple wires, and a wire harness fastening sleeve is fitted over the outside of the wire harness body.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the structure of this terminal wire and wire harness is reasonably designed; Its terminals employ an upper and lower cover spliced ​​together, connected via a snap-fit ​​structure consisting of a locking block and a slot. Compared to traditional integrated injection-molded terminals, this design allows for convenient disassembly and assembly. When the main body of the wire is damaged, the snap-fit ​​structure can be opened to replace or repair the wire body without replacing the entire terminal, significantly reducing usage and maintenance costs. Simultaneously, the convex surfaces on the outer walls of the locking block and the concave surfaces on the inner walls of the slot not only facilitate smooth insertion of the locking block into the slot for quick assembly but also form an effective anti-detachment structure after snap-fitting, preventing the locking block from dislodging under external force or vibration. Furthermore, an arched elastic plate is installed within the filling cavity of the locking block. This arched elastic plate has excellent elastic deformation capability, providing continuous elastic support after the locking block is inserted into the slot, ensuring a tight fit between the locking block and the slot. This further enhances the stability of the snap-fit ​​structure, ensuring a reliable connection between the main body of the wire and the terminal, effectively preventing signal transmission or power supply failures due to loose connections. Attached Figure Description

[0013] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the main body of the wire of this utility model; Figure 3 This is a schematic diagram of the snap-fit ​​structure of this utility model; Figure 4This is a schematic diagram of the protective pad ring of this utility model.

[0014] In the diagram: 1. Main body of the wire; 2. Main body of the wire harness; 3. Terminal top cover; 4. Insert; 5. Elastic block; 6. Terminal bottom cover; 7. Wire terminal; 8. Electronic slot; 9. Electronic socket; 10. Wire outer sheath; 11. Wire harness fastening sleeve; 12. Sloping convex surface; 13. Sloping concave surface; 14. Arched elastic plate; 15. Filling cavity; 16. Rounded corner; 17. Locking block; 18. Locking groove; 19. Protective gasket ring; 20. Insulating protective layer; 21. Sealing cavity; 22. Insulating pad; 23. Smooth surface. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: In this technical solution, a terminal wire includes a main body 1 composed of multiple wires. The front end of the main body 1 is equipped with a wire terminal 7, and the rear end of the wire terminal 7 is provided with a terminal socket 9. The end of the main body 1 is inserted into the terminal socket 9. The wire terminal 7 includes a terminal upper cover 3 and a terminal lower cover 6. The terminal upper cover 3 and the terminal lower cover 6 are spliced ​​together to form the terminal socket 9. The terminal upper cover 3 and the terminal lower cover 6 are connected by a snap-fit ​​structure. The snap-fit ​​structure includes snap-fit ​​blocks 17 installed on the left and right sides of the bottom end of the terminal upper cover 3 and snap-fit ​​grooves 18 opened on the left and right sides of the top end of the terminal lower cover 6. The snap-fit ​​blocks 17 are snapped into the snap-fit ​​grooves 18. A protective pad ring 19 is provided on the outer wall of the terminal socket 9. The protective pad ring 19 is sleeved on the outside of the main body 1.

[0017] In practical implementation, the terminald cable uses a main body 1 composed of multiple wires as the core transmission carrier. The number and specifications of the multiple wires can be flexibly adjusted according to actual needs. For example, in scenarios requiring the simultaneous transmission of multiple signals or high currents, the number of wires can be increased and high-conductivity wire materials (such as copper core wires) can be selected to ensure the integrity of signal transmission and the stability of power supply. The wire terminal 7 assembled at the front end of the main body 1 serves as a connection interface component. Its core function is to enable quick and reliable docking between the main body 1 and external equipment. The terminal socket 9 at the rear end of the wire terminal 7 has a precisely designed inner diameter that matches the outer diameter of the main body 1, ensuring a tight fit after the end of the main body 1 is inserted, avoiding poor contact problems caused by gaps. In actual assembly, a suitable amount of outer sheath can be stripped from the end of the main body 1 of the wire to expose the internal wires. Then, the exposed wires can be inserted into the terminal socket 9. If further improvement of connection reliability is required, welding or crimping processes can be used to make the wires and the conductive components inside the terminal socket 9 form a stable connection. The wire terminal 7 adopts a split structure with the upper terminal cover 3 and the lower terminal cover 6 spliced ​​together. Compared with the traditional integrated terminal, this design has significant assembly flexibility and maintenance convenience. During the production and assembly stage, the terminal upper cover 3 and terminal lower cover 6 can be manufactured separately and then spliced ​​together using a snap-fit ​​structure, reducing the overall processing difficulty. In later use, if a fault occurs inside the terminal or the main body 1 of the wire needs to be replaced, the snap-fit ​​structure can be removed, and the terminal upper cover 3 and terminal lower cover 6 can be disassembled for repair, eliminating the need to replace the entire terminal and significantly reducing maintenance costs and resource waste. The protective gasket 19 fitted onto the outer wall of the terminal socket 9 is made of elastic insulating material (such as rubber or silicone), and its inner diameter closely matches the outer diameter of the main body 1 of the wire. After fitting, it tightly wraps the connection between the main body 1 of the wire and the terminal socket 9. In practical applications, the protective gasket 19 effectively fills the tiny gap between the main body 1 of the wire and the terminal socket 9. Simultaneously, when the main body 1 of the wire is subjected to slight pulling or vibration, its elastic deformation absorbs external force, preventing the wire from detaching or the terminal from being damaged due to direct external force acting on the connection, providing double protection for the connection structure.

[0018] In some technical solutions, the outer walls on both sides of the card block 17 are provided with inclined convex surfaces 12, and the inner walls on both sides of the card slot 18 are provided with inclined concave surfaces 13, with the inclined convex surfaces 12 and the inclined concave surfaces 13 cooperating with each other.

[0019] In the specific implementation process, in the mating structure of the locking block 17 and the locking slot 18, the inclined convex surfaces 12 on both sides of the outer wall of the locking block 17 are typically designed with an inclination angle of 30°-60°. This angle range has been verified through multiple experiments, ensuring both the smooth insertion of the locking block 17 into the locking slot 18 and providing sufficient anti-disengagement resistance after engagement. The inclined concave surfaces 13 on both sides of the corresponding locking slot 18 have an inclination angle and shape that perfectly match the inclined convex surfaces 12, forming a complementary "convex-concave" mating structure. During actual assembly, the operator only needs to align the terminal upper cover 3 with the terminal lower cover 6 and apply vertical downward pressure. Under the action of pressure, the locking block 17 slides along the inclined direction of the inclined concave surface 13. The inclined structure of the inclined convex surface 12 and the inclined concave surface 13 can convert the vertical pressure into a lateral guiding force, guiding the locking block 17 smoothly into the locking slot 18. Once the locking block 17 is fully engaged in the slot 18, the inclined convex surface 12 and the inclined concave surface 13 fit tightly together, forming a mutually limiting structure in the lateral direction. This effectively prevents the locking block 17 from coming out of the slot 18 when subjected to horizontal external force or vibration. For example, during vehicle operation, terminal wires are subject to continuous vibration. This mating structure can prevent the upper cover 3 and lower cover 6 of the terminal from becoming loose due to vibration, ensuring the stability of the overall terminal structure.

[0020] In some technical solutions, the card block 17 has a filling cavity 15 inside, and an arched elastic plate 14 is assembled inside the filling cavity 15.

[0021] In the specific implementation process, the filling cavity 15 inside the locking block 17 is adapted to the size of the arched elastic plate 14. The arched elastic plate 14 is made of elastic metal material (such as spring steel) or high-strength elastic plastic, which has good elastic deformation capability and fatigue resistance. In the assembled state, the arched elastic plate 14 is in a natural arched state, with its two ends tightly fitting the inner wall of the filling cavity 15 and the middle protruding outward, forming a continuous supporting force on the inner wall of the locking block 17. When the locking block 17 is inserted into the locking slot 18, the inner wall of the locking slot 18 will exert a lateral squeezing force on the locking block 17, causing the locking block 17 to have a slight tendency to shrink. At this time, the arched elastic plate 14 in the filling cavity will undergo elastic deformation due to squeezing and store elastic potential energy. When the locking block 17 is fully inserted into the locking slot 18, the arched elastic plate 14 releases elastic potential energy and applies an outward supporting force to the locking block 17, so that the outer wall of the locking block 17 fits tightly with the inner wall of the locking slot 18, eliminating the gap between the two. This structure can effectively solve the problem of loosening of the snap-fit ​​due to material aging or vibration during long-term use. For example, in high-temperature environments, the terminal material may shrink slightly, and the elastic support of the arched elastic plate 14 can compensate for the shrinkage and maintain the stability of the snap-fit ​​structure.

[0022] In some technical solutions, the outer wall of the protective pad ring 19 is provided with a smooth surface 23.

[0023] In practical implementation, the smooth surface 23 on the outer wall of the protective gasket 19 is achieved through precision grinding or surface coating processes, with a surface roughness typically controlled below Ra0.8μm. In real-world applications, the smooth surface 23 primarily serves two purposes: first, it reduces installation resistance. When terminald wires need to pass through perforations in the equipment housing or come into close contact with other components, the smooth outer wall reduces frictional resistance between the protective gasket 19 and the inner wall of the perforation or other components, preventing damage to the protective gasket 19 during installation and facilitating quick installation by operators. Second, it reduces wear. During equipment operation, terminald wires may experience slight friction with surrounding components due to vibration. The smooth surface 23 significantly reduces the coefficient of friction, minimizing wear on the protective gasket 19 and extending its service life. For example, in electrical control cabinets where terminald wires need to be arranged close to other cables and metal supports, the smooth surface 23 prevents the protective gasket 19 from cracking due to long-term friction, ensuring continued effective protection.

[0024] In some technical solutions, inserts 4 are installed on both outer walls of the terminal cover 3, and elastic blocks 5 are provided at the ends of the inserts 4. Terminal slots 8 are provided at the front ends of the terminal cover 3 and the terminal cover 6.

[0025] In practical implementation, the inserts 4 mounted on the outer walls of both sides of the terminal cover 3 are made of rigid insulating material (such as ABS engineering plastic). Their length and width are designed according to the size of the external device interface to ensure accurate insertion into the interface. The elastic block 5 at the end of the insert 4 is made of soft elastic material (such as soft rubber). In its natural state, the elastic block 5 protrudes slightly outward. When the insert 4 is inserted into the external device interface, the elastic block 5 will undergo elastic deformation due to the compression of the inner wall of the interface, tightly fitting the inner wall of the interface to form an interference fit structure. This not only prevents the insert 4 from loosening in the interface but also enhances the sealing performance of the interface, preventing dust and moisture from entering the interface. The terminal slots 8 at the front ends of the terminal cover 3 and the terminal cover 6 have metal conductive contacts inside, which are electrically connected to the wires inside the wire body 1. The shape and size of the terminal slot 8 are designed according to the specifications of the external mating terminal. For example, in scenarios where mating with a standard plug is required, the terminal slot 8 can be designed to conform to the international standard interface shape (such as USB interface, terminal block interface, etc.). In practical use, the external docking terminal only needs to be inserted into the terminal slot 8 to form an electrical connection with the wire body 1 through the internal conductive contacts, achieving quick docking. Compared with the traditional terminal block connection method, it greatly improves assembly efficiency and is especially suitable for mass production and rapid installation scenarios (such as electronic equipment production lines, electrical control cabinet assembly, etc.).

[0026] A wire harness includes a wire harness body 2 formed by multiple wire bodies 1, and a wire harness fastening sleeve 11 is fitted on the outside of the wire harness body 2.

[0027] In the specific implementation process, the wire harness is centered on the wire harness body 2, which consists of multiple wire bodies 1. The multiple wire bodies 1 can be classified and arranged according to actual needs. For example, the wires that transmit signals can be arranged separately from the wires that transmit power to avoid signal interference. At the same time, a shielding layer (such as a metal mesh shielding layer) can be wrapped around the wire body 1 to further improve the anti-interference capability. It is suitable for scenarios with high requirements for signal transmission quality (such as industrial automation control systems, automotive electronic systems, etc.). The wire harness fastening sleeve 11, which is fitted outside the wire harness body 2, is made of flame-retardant insulating material (such as PVC, nylon, etc.). Its inner diameter is designed according to the outer diameter of the wire harness body 2. After fitting, it can be fastened by shrinkage process (such as heat shrink) or snap-fit ​​structure. In practical applications, the wire harness fastening sleeve 11 mainly serves three purposes: First, it secures the wire harness structure, tightly binding multiple wire bodies 1 together to prevent wires from becoming tangled or misaligned during installation and use, ensuring a neat overall structure and facilitating wiring and fixing within the equipment. Second, it provides protection by using its insulation and flame-retardant properties to isolate moisture, dust, and high temperatures from the external environment, protecting the wires inside the wire harness body 2 from damage. In the event of a fire, it can also slow the spread of flames and reduce safety risks. Third, it facilitates identification and maintenance by printing markings (such as wire usage and serial numbers) on the surface of the wire harness fastening sleeve 11, allowing maintenance personnel to quickly identify the corresponding function of the wire harness during inspection, improving maintenance efficiency. For example, in automotive wiring harnesses, different colored or marked wire harness fastening sleeves can quickly distinguish between different functions such as engine control wiring harnesses and headlight wiring harnesses.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A terminal wire, comprising a main body (1) of multiple wires, characterized in that, The front end of the wire body (1) is equipped with a wire terminal (7), and the rear end of the wire terminal (7) is provided with a terminal socket (9). The end of the wire body (1) is inserted into the terminal socket (9). The wire terminal (7) includes a terminal upper cover (3) and a terminal lower cover (6). The terminal upper cover (3) and the terminal lower cover (6) are spliced ​​together to form the terminal socket (9). The terminal upper cover (3) and the terminal lower cover (6) are connected by a snap-fit ​​structure. The snap-fit ​​structure includes a snap-fit ​​block (17) installed on the left and right sides of the bottom of the terminal upper cover (3) and a snap-fit ​​groove (18) opened on the left and right sides of the top of the terminal lower cover (6). The snap-fit ​​block (17) is snapped into the snap-fit ​​groove (18). The outer wall of the terminal socket (9) is provided with a protective pad ring (19). The protective pad ring (19) is sleeved on the outside of the wire body (1).

2. The terminal wire according to claim 1, characterized in that, The outer walls of both sides of the card block (17) are provided with inclined convex surfaces (12), and the inner walls of both sides of the card slot (18) are provided with inclined concave surfaces (13). The inclined convex surfaces (12) and the inclined concave surfaces (13) cooperate with each other.

3. A terminal wire according to claim 2, characterized in that, The card block (17) has a filling cavity (15) inside, and an arched elastic plate (14) is installed inside the filling cavity (15).

4. A terminal wire according to claim 1, characterized in that, The protective gasket (19) has a sealed cavity (21) inside, an insulating gasket (22) is installed inside the sealed cavity (21), and an insulating protective layer (20) is provided on the inner wall of the protective gasket (19).

5. A terminal wire according to claim 4, characterized in that, The outer wall of the protective pad ring (19) is provided with a smooth surface (23), and the end of the locking block (17) is provided with a rounded corner (16).

6. A terminal wire according to claim 1, characterized in that, Both sides of the outer wall of the terminal cover (3) are equipped with inserts (4), and the ends of the inserts (4) are provided with elastic blocks (5). The front ends of the terminal cover (3) and the terminal cover (6) are provided with terminal slots (8).

7. A terminal wire according to claim 1, characterized in that, The outer casing of the wire body (1) is covered with a wire sheath (10).

8. A wire harness comprising a wire harness body (2) formed by a plurality of wire bodies (1), the wire harness body (2) being fitted with a wire harness fastening sleeve (11).

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