Automobile large-current waterproof connector

Abstract

The utility model provides an automobile large current waterproof connector, comprising a plastic housing comprising a cover plate and a pedestal which are buckled up and down, the pedestal is provided with two connecting pipes which are respectively arranged at two sides of the pedestal, and the connecting pipes are used for inserting cables; and the conductive strip is provided with a conductive main body embedded in the base and two connecting sheets which are positioned at two ends of the conductive main body and are exposed, and the two connecting sheets are used for being connected with the shielding assemblies of the corresponding cables. Compared with a mode of realizing electromagnetic shielding between two cables through a metal shell in the prior art, the scheme provided by the utility model has the advantages that the shielding assemblies of the two cables can be connected through the two connecting sheets and the conductive main body embedded in the plastic shell, so that electromagnetic shielding is realized, the production cost is reduced, and the production efficiency is improved. And the anti-electric shock effect of the plastic shell is better.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to an automobile high-current waterproof connector. Background Art

[0002] With the rapid development of new energy technologies, high-current connectors have increasingly higher requirements for safety and functional stability. The application side requires the casing to be anti-electric shock, shielded against electromagnetic interference, and have a high and reliable waterproof level. The production side requires the connector to be easier to assemble, disassemble and repair.

[0003] Chinese patent document CN218101928U discloses a copper-aluminum high-current junction box connector, comprising a metal shell, and a copper cable and an aluminum rod cable respectively arranged at two ends of the metal shell, a first shielding pressing ring, a second shielding pressing ring and a shielding ring are arranged on the side of the metal shell corresponding to the copper cable, the second shielding pressing ring is sleeved on the front end of the first shielding pressing ring, and the shielding ring is sleeved on the rear end of the first shielding pressing ring, the shielding wire on the copper cable is crimped between the first shielding pressing ring and the second shielding pressing ring, the outer wall of the shielding ring is in contact with the inner wall of the first cylindrical wire inlet, so that the shielding wire on the copper cable is connected to the metal shell; a shielding pressing plate is arranged on the side of the metal shell corresponding to the aluminum rod cable, and semi-annular shielding parts are arranged at both ends of the shielding pressing plate, the semi-annular shielding parts are in contact with the metal outer layer (i.e., shielding layer) of the aluminum rod cable, and the shielding pressing plate is installed in the metal shell by a second screw, so that the shielding layer of the aluminum rod cable is connected to the metal shell, that is, the electromagnetic shielding between the copper cable and the aluminum rod cable is realized by the shielding wire, shielding ring, metal shell, metal outer layer and shielding layer connected in sequence. In order to achieve electromagnetic interference protection, the above scheme requires the entire shell to be made of metal material, which greatly increases the production cost, and the metal shell has poor anti-electric shock effect; in addition, the shielding structure has a large number of parts and the assembly process is complicated, further increasing the production cost. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of high production cost of connectors in the prior art, thereby providing a high-current waterproof connector for automobiles with low production cost.

[0005] To this end, the utility model provides an automotive high-current waterproof connector, including a plastic shell and a conductive strip, the plastic shell including a cover plate and a base that are buckled together, the base having two connecting tubes disposed on both sides thereof, the connecting tubes being used for cables to be inserted, and a sealing strip being provided between the cover plate and the base; the conductive strip having a conductive body embedded in the base, and two connecting pieces located at both ends of the conductive body and exposed, the two connecting pieces being used to be connected to a shielding assembly of a corresponding cable.

[0006] The connecting piece is an arc-shaped structure, and the shielding assembly includes: a first shielding ring, having a first connecting sleeve for the cable to pass through, and a first annular flange arranged at the end of the first connecting sleeve, the first annular flange having an arc-shaped contact piece arranged at intervals along its circumference and capable of contacting and communicating with the connecting piece of the arc-shaped structure.

[0007] A protrusion is provided on a side of the contact sheet facing the connecting sheet.

[0008] At least two of the contact pieces of the first shielding ring are in contact and communication with the connecting piece at the same time.

[0009] The shielding assembly also includes: a second shielding ring, having a second connecting sleeve inserted into the first connecting sleeve, and a second annular flange arranged at the end of the second connecting sleeve, the second annular flange abuts against the end surface of the first connecting sleeve away from the first annular flange, and the shielding wire of the cable is pressed and fixed between the outer wall of the second connecting sleeve and the inner wall of the first connecting sleeve.

[0010] It also includes a sealing ring sleeved on the cable, one end surface of the sealing ring abuts against the second annular flange, and the other end abuts against the sealing cover, and the sealing cover is assembled with the connecting pipe through a snap-fit ​​structure.

[0011] It also includes a protective sleeve which is injection molded on the outer wall of the conductive body of the conductive strip.

[0012] Both sides of the protective cover are provided with convex ribs extending to the corresponding bottom of the connecting piece, and bosses are provided at the bottom of the convex ribs for abutting against the injection mold.

[0013] The base includes a bottom plate and a plurality of side plates distributed around the bottom plate, a connecting tube extending outward is provided in the middle of the side plate, the conductive body includes a first section distributed in a U shape inside the bottom plate and the two side plates, and a second section bent and connected to the first section and located inside the connecting tube, the second section being connected to the connecting sheet.

[0014] The technical solution of the utility model has the following advantages:

[0015] 1. The automotive high-current waterproof connector provided by the utility model includes a plastic shell and a conductive strip. The conductive strip has a conductive body embedded in a base, and two connecting pieces located at both ends of the conductive body and exposed. Compared with the prior art method of achieving electromagnetic shielding between two cables through a metal shell, in the solution of the present application, the shielding components of the two cables can be connected through two connecting pieces and the conductive body embedded in the plastic shell, thereby achieving electromagnetic shielding. This not only reduces the production cost, but also the plastic shell has a better anti-electric shock effect.

[0016] 2. The automotive high-current waterproof connector provided by the utility model has a first shielding ring fixed on the cable, which has a first connecting sleeve for the cable to pass through, and a first annular flange arranged at the end of the first connecting sleeve, and the first annular flange has an arc-shaped contact piece arranged at intervals along its circumference and can be in contact with and communicate with the connecting piece of the arc structure. During assembly, the first shielding ring is inserted into the plastic housing along with the cable, and the arc-shaped contact pieces distributed along the circumference of the first shielding ring can be in contact with and communicate with the connecting piece by rotating the cable. Compared with the prior art method of fixing the shielding ring to the housing by screws, this assembly is faster and more convenient.

[0017] 3. The automotive high-current waterproof connector provided by the utility model has a protrusion on one side of the contact piece facing the connecting piece, so that the contact is more reliable. Furthermore, at least two contact pieces of the first shielding ring are in contact and communication with the connecting piece at the same time, thereby ensuring the connection reliability.

[0018] 4. The automotive high-current waterproof connector provided by the utility model has a step at the rear end of the connecting piece along the insertion direction of the contact piece, and the step is used to abut against the contact piece, thereby limiting the position of the first shielding ring and ensuring that the first shielding ring moves to a position corresponding to the connecting piece, which makes installation faster and more convenient.

[0019] 5. The automotive high-current waterproof connector provided by the utility model has a second shielding ring having a second connecting sleeve inserted into the first connecting sleeve, and a second annular flange arranged at the end of the second connecting sleeve, and the second annular flange abuts against the end face of the first connecting sleeve away from the first annular flange. When assembling the shielding assembly, first install the second connecting sleeve of the second shielding ring on the cable, then wrap the shielding wire of the cable around the outer wall of the second connecting sleeve, then sleeve the first connecting sleeve of the first shielding ring on the second connecting sleeve, and finally press and fix the first connecting sleeve and the second connecting sleeve by tools. The shielding assembly has fewer parts, and the assembly is faster and more convenient, which reduces the production cost. In addition, the shielding assembly and the shielding wire of the cable are installed more firmly.

[0020] 6. The automotive high-current waterproof connector provided by the utility model also includes a sealing ring sleeved on the cable, and one end face of the sealing ring abuts against the second annular flange, so that the second annular flange can be used to limit the installation position of the first connecting sleeve in addition to limiting the installation position of the sealing ring.

[0021] 7. The high-current waterproof connector provided by the utility model also includes a protective cover injection-molded on the outer wall of the conductive body of the conductive strip, and the protective cover can prevent the injection pressure during the secondary injection molding from causing a large impact on the conductive body and causing damage to the conductive body; further, both sides of the protective cover are provided with convex ribs extending to the bottom of the corresponding connecting piece, and a boss provided at the bottom of the convex rib for abutting against the injection mold, and the convex rib and the boss can play a certain supporting role on the arc-shaped contact piece, thereby preventing the injection pressure during the secondary injection molding from causing a large impact on the arc-shaped connecting piece and causing the arc-shaped connecting piece to be deformed and have poor contact with the contact piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the structure of the automotive high-current waterproof connector of the utility model;

[0024] Figure 2 This is a cross-sectional view of a high current waterproof connector;

[0025] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0026] Figure 4 This is a schematic diagram of the explosion structure of a high current waterproof connector;

[0027] Figure 5 It is a schematic diagram of the assembly of the shielding component;

[0028] Figure 6 It is a schematic diagram of the explosion structure of the shielding component;

[0029] Figure 7 is a cross-sectional view of a shielding assembly;

[0030] Figure 8 is a cross-sectional view of a conductive bar assembly;

[0031] Fig. 9 Schematic diagram of the exploded structure of the conductive strip assembly.

[0032] Explanation of the reference numerals: 1. plastic shell; 2. conductive strip; 3. conductive body; 4. connecting piece; 5. cable; 6. shielding assembly; 7. first shielding ring; 8. first connecting sleeve; 9. first annular flange; 10. contact piece; 11. protrusion; 12. second shielding ring; 13. second connecting sleeve; 14. second annular flange; 15. sealing ring; 16. protective sleeve; 17. convex rib; 18. boss; 19. bottom plate; 20. side plate; 21. first section; 22. second section; 23. connecting pipe; 24. nut; 25. base; 26. step; 27. cover; 28. wiring nose; 29. ​​cover plate; 30. sealing strip. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Example 1

[0038] This embodiment provides a high current waterproof connector for automobiles, such as Figure 1 and Figure 4As shown, it includes a plastic housing 1, a conductive bar assembly, a sealing ring 15 and a cover 27.

[0039] Plastic housing 1, such as Figure 2 , Figure 3 and Figure 4 As shown, it includes a cover plate 29 and a base 25 which are buckled together. The base 25 includes a bottom plate 19 and a plurality of side plates 20 distributed around the bottom plate 19. In this embodiment, a connecting pipe 23 extending outward is provided in the middle of the two side plates 20 which are arranged opposite to each other. The connecting pipe 23 is used for inserting the cable 5. It should be noted that the top edge of the base 25 is installed on a ring-shaped sealing strip 30 for sealing the cover plate 29 and the base 25.

[0040] Conductive bar components, such as Figure 8 and Fig. 9 As shown, it includes a conductive strip 2 and a protective cover 16, the conductive strip 2 has a conductive body 3 embedded in the plastic shell 1, and two connecting pieces 4 located at both ends of the conductive body 3 and exposed. It should be noted that embedded means that the conductive body 3 is covered by the plastic base 25 inside, and only the two connecting pieces 4 on both sides are exposed outside the connecting tube 23 for contacting and connecting with the shielding component 6. The conductive body 3 is bent and connected with the two connecting pieces 4 as a whole. The conductive body 3 includes a first section 21 distributed in a U shape inside the bottom plate 19 and the two side plates 20, and a second section 22 bent and connected to the first section 21 and located in the connecting tube 23. , the second section 22 is connected to the connecting piece 4, and the two connecting pieces 4 are used to be connected to the shielding assembly 6 of the corresponding cable 5. In this embodiment, the connecting piece 4 is an arc-shaped structure; a protective cover 16 is injection-molded on the outer wall of the conductive body 3 of the conductive strip 2, and the two sides of the protective cover 16 are provided with convex ribs 17 extending to the bottom of the corresponding connecting piece 4, and a boss 18 is provided at the bottom of the convex rib 17 for abutting against the injection mold. The convex rib 17 and the boss 18 can play a certain supporting role on the arc-shaped connecting piece 4, so as to avoid the injection pressure during the secondary injection molding causing a large impact on the arc-shaped connecting piece 4, so that the arc-shaped connecting piece 4 is deformed and has poor contact with the contact piece.

[0041] Shielding component 6, such as Figure 5 , Figure 6 and Figure 7As shown, it includes a first shielding ring 7 and a second shielding ring 12, the first shielding ring 7 has a first connecting sleeve 8 for the cable 5 to pass through, and a first annular flange 9 arranged at the end of the first connecting sleeve 8, the first annular flange 9 has arc-shaped contact pieces 10 arranged at intervals along its circumference and can be in contact with and connected to the connecting piece 4 of the arc structure, at least one of the contact pieces 10 of the first annular flange 9 maintains contact and communication with the connecting piece 4, and a protrusion 11 is provided on the side of the contact piece 10 facing the connecting piece 4, and at least two of the contact pieces 10 of the first shielding ring 7 are in contact and communication with the connecting piece 4 at the same time, so that even if one of the contact pieces 10 is deformed and has poor contact with the connecting piece 4, the other contact piece 10 can still be in contact and communication with the connecting piece 4, thereby ensuring that the first shielding ring 7 is in reliable contact with the connecting piece 4. The second shielding ring 12 has a second connecting sleeve 13 inserted into the first connecting sleeve 8, and a second annular flange 14 provided at the end of the second connecting sleeve 13. The second annular flange 14 abuts against the end surface of the first connecting sleeve 8 away from the first annular flange 9, and the shielding wire of the cable 5 is pressed and fixed between the outer wall of the second connecting sleeve 13 and the inner wall of the first connecting sleeve 8. When assembling the shielding assembly, the second connecting sleeve 13 of the second shielding ring 12 is first installed on the cable 5, and then the shielding wire of the cable 5 is wound on the outer wall of the second connecting sleeve 13, and then the first connecting sleeve 8 of the first shielding ring 7 is sleeved on the second connecting sleeve 13, and finally the first connecting sleeve 8, the shielding wire and the second connecting sleeve 13 are fixed by riveting. The above-mentioned shielding assembly has fewer parts, and the assembly is faster and more convenient, which reduces the production cost. In addition, the shielding assembly and the shielding wire of the cable are installed more firmly. The inner wall of the connecting tube 23 is provided with a step 26 arranged adjacent to the connecting piece 4, and the step 26 is located at the end of the connecting piece 4 away from the insertion direction of the contact piece 10. When the cable 5 is inserted into the connecting tube 23, the front end of the contact piece 10 abuts against the step 26, and then the cable 5 is rotated so that the wiring nose 28 at the front end of the cable 5 is rotated to a position that fits with the nut 24 in the plastic housing 1.

[0042] The sealing ring 15 is sleeved on the cable 5 , and one end surface of one end thereof abuts against the second annular flange 14 , and the other end abuts against the sealing cover 27 . The sealing cover 27 is assembled with the connecting pipe 23 through a snap-fit ​​structure.

[0043] The high-current waterproof connector provided by the utility model includes a plastic shell 1 and a conductive strip 2. The conductive strip 2 has a conductive body 3 embedded in the plastic shell 1, and two connecting pieces 4 located at both ends of the conductive body 3 and exposed. Compared with the prior art method of achieving electromagnetic shielding between two cables through a metal shell, in the solution of the present application, the shielding components 6 of the two cables 5 can be connected through two connecting pieces 4 and the conductive body 3 embedded in the plastic shell 1, thereby achieving electromagnetic shielding. This not only reduces the production cost, but also improves the anti-electric shock effect of the plastic shell.

[0044] The utility model provides a production process for a large current waterproof connector, comprising the following steps: S1, bending a conductive strip 2, and punching connecting pieces 4 at both ends of the conductive strip 2 into an arc shape; S2, forming a protective cover 16 covering the outer wall of a conductive body 3 by one-time injection molding of the processed conductive strip 2; S3, placing the conductive strip 2 and a plurality of nuts 24 after one-time injection molding into an injection mold, and forming a base 25 of a plastic shell 1 by secondary injection molding.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A high current waterproof connector for automobiles, characterized in that: include: A plastic housing (1) comprises a cover plate (26) and a base (25) which are buckled together, the base (25) having two connecting pipes (23) arranged on both sides thereof, the connecting pipes (23) being used for inserting cables (5), and a sealing strip (30) being arranged between the cover plate (26) and the base (25); The conductive strip (2) comprises a conductive body (3) embedded in the base (25), and two exposed connecting pieces (4) located at both ends of the conductive body (3), wherein the two connecting pieces (4) are used to be connected to the shielding assembly (6) of the corresponding cable (5).

2. The automotive high current waterproof connector according to claim 1, characterized in that: The connecting piece (4) is an arc-shaped structure, and the shielding component (6) comprises: The first shielding ring (7) comprises a first connecting sleeve (8) for the cable (5) to pass through, and a first annular flange (9) arranged at the end of the first connecting sleeve (8), wherein the first annular flange (9) has arc-shaped contact pieces (10) arranged at intervals along its circumference and capable of contacting and communicating with the connecting piece (4) of the arc-shaped structure.

3. The automotive high current waterproof connector according to claim 2, characterized in that: A protrusion (11) is provided on a side of the contact sheet (10) facing the connecting sheet (4).

4. The automotive high current waterproof connector according to claim 2 or 3, characterized in that: At least two of the contact pieces (10) of the first shielding ring (7) are in contact and communication with the connecting piece (4) at the same time.

5. The automotive high current waterproof connector according to claim 2, characterized in that: The shielding component (6) further comprises: The second shielding ring (12) comprises a second connecting sleeve (13) inserted into the first connecting sleeve (8), and a second annular flange (14) arranged at the end of the second connecting sleeve (13), the second annular flange (14) abutting against the end surface of the first connecting sleeve (8) away from the first annular flange (9), and the shielding wire of the cable (5) is pressed and fixed between the outer wall of the second connecting sleeve (13) and the inner wall of the first connecting sleeve (8).

6. The automotive high current waterproof connector according to claim 5, characterized in that: It also includes a sealing ring (15) sleeved on the cable (5), one end face of the sealing ring (15) abuts against the second annular flange (14), and the other end abuts against the sealing cover (27), and the sealing cover (27) is assembled with the connecting pipe (23) through a snap-fit ​​structure.

7. The automotive high current waterproof connector according to claim 1, characterized in that: It also includes a protective sleeve (16) injection-molded on the outer wall of the conductive body (3) of the conductive strip (2).

8. The automotive high current waterproof connector according to claim 7, characterized in that: The protective cover (16) is provided with convex ribs (17) extending to the bottom of the corresponding connecting piece (4) on both sides, and a boss (18) provided at the bottom of the convex rib (17) for abutting against the injection mold.

9. The automotive high current waterproof connector according to claim 1, characterized in that: The base (25) comprises a bottom plate (19) and a plurality of side plates (20) distributed around the bottom plate (19); a connecting tube (23) extending outward is provided in the middle of the side plate (20); the conductive body (3) comprises a first section (21) distributed in a U-shape inside the bottom plate (19) and the two side plates (20); and a second section (22) bent and connected to the first section (21) and located inside the connecting tube (23); the second section (22) is connected to the connecting sheet (4).

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