Electric connector

Abstract

According to the technical scheme, the electric connector is characterized in that the electric connector comprises a first connector and a second connector which are used in an inserted mode, the first connector comprises a plurality of core cavities which are cylindrical and hollow inside, a first annular cylinder and a second annular cylinder are arranged in the core cavities, the diameters of the first annular cylinder and the second annular cylinder are gradually reduced compared with the diameters of the core cavities, and copper inserting pieces are arranged in the core cavities. The copper plug-in comprises a crimping part, a connecting part and a socket part, a step surface is arranged between the crimping part and the connecting part, the connecting part is provided with a limiting piece which protrudes obliquely, the step surface and the limiting piece abut against the two ends of the second annular cylinder respectively, and the outer side of the connecting part and the outer side of the limiting piece abut against the inner surface of the first annular cylinder in a matched mode; the second connector is fixedly provided with a connecting pin, and the connecting pin is inserted into the core cavity and abuts against the inner surface of the socket part. The connecting structure has the advantages of being simple in structure, convenient to machine and assemble and capable of keeping connection stable and reliable when the connecting structure is frequently used.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and more particularly to an electric connector. Background Art

[0002] The known electrical connector is internally equipped with electrical terminals constituting conductive parts, and is usually provided with a pair of mating connectors. When the two connectors are properly mated so that the corresponding electrical terminals engage, the electrical connector closes the circuit.

[0003] In many application fields, connectors are used for frequent connections; connectors are plugged in and out many times during use. Existing connectors generally include two conductive parts inside: a pin and a socket. The socket and the pin are plugged together to form an electrical connection. The pin is an integral columnar structure and is easy to fix, while the socket is a hollow structure and is not easy to fix. Therefore, after long-term use, the internal socket and the housing of the connector are prone to loosening, resulting in a decrease in the connection reliability of the socket part. One of the existing solutions is to completely fix it by injection molding or other methods, but this method is more troublesome to process, and the deformation elasticity and heat dissipation performance of the socket itself are affected to a certain extent after injection molding. Therefore, it is necessary to improve the existing electrical connector to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides an electrical connector having the advantages of simple structure, easy processing and assembly, and the ability to maintain stable and reliable connection when frequently used.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electrical connector, comprising a first connector and a second connector for plug-in use, the first connector comprising a plurality of core cavities in a cylindrical shape and hollow inside, a first ring tube and a second ring tube which are gradually reduced in diameter compared to the core cavity are provided in the core cavity, a copper plug is provided in the core cavity, the copper plug comprises a crimping part, a connecting part and a socket part, a step surface is provided between the crimping part and the connecting part, an inclined protruding limit plate is provided on the connecting part, the step surface and the limit plate respectively abut against the two ends of the second ring tube, the outer sides of the connecting part and the limit plate are in abutment with the inner surface of the first ring tube; a connecting pin is fixedly provided on the second connector, the connecting pin is inserted into the core cavity and is in abutment with the inner surface of the socket part.

[0006] The utility model is further configured as follows: the limiting piece is inclined and protrudes toward one side of the crimping portion, and forms a flat surface toward the crimping portion and an inclined surface toward the inserting portion.

[0007] The present invention is further configured as follows: there are two limiting pieces, and the two limiting pieces are arranged on both sides of the connecting portion.

[0008] The utility model is further configured as follows: the socket portion comprises two symmetrically arranged arc-shaped pieces with a gap therebetween, and the two arc-shaped pieces are inclined and approached from the connecting portion to the port.

[0009] The utility model is further configured as follows: the arc-shaped piece is provided with a flared portion at the port.

[0010] The utility model is further configured as follows: the first connector is provided with a wiring port, an intermediate screw sleeve and a compression screw sleeve for cooperating with the external cable; one end of the intermediate screw sleeve is threadedly connected to the wiring port, and the other end is threadedly connected to the compression screw sleeve; a convex ring is provided on the intermediate screw sleeve, and a sealing gasket is provided between the outer end surface of the wiring port and the convex ring.

[0011] The present invention is further configured as follows: a pair of connecting handles are rotatably provided on the upper portion of the second connecting head, the connecting handles are provided with a bent hook portion, and the first connecting head is provided with a connecting column. When the second connecting head is connected to the first connecting head, the connecting handles are rotated so that the hook portion is hooked with the connecting column.

[0012] The present invention is further configured as follows: a square sealing gasket is provided between the first connector and the second connector, and the square sealing gasket is fixedly provided on the first connector or the second connector.

[0013] In summary, the present invention has the following beneficial effects:

[0014] Compared with the prior art, the core cavity of the first connector of the present invention is provided with a first ring tube and a second ring tube, and the step surface and the limit plate on the copper plug respectively abut against the two ends of the first ring tube, so that the copper plug is firmly fixed in the axial direction and will not loosen. At the same time, the outer side of the connecting portion and the limit plate abuts against the inner surface of the second ring tube, so that the radial direction is also fixed. Therefore, the copper plug of the present invention is not easy to loosen even during long-term and frequent plugging and unplugging. In addition, compared with the injection molding method, the structure of the present invention is relatively simple, and the production and assembly are convenient, and it will not affect the heat dissipation of the conductive component itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the connector.

[0016] Figure 2 2 is a schematic diagram of the internal cross-sectional structure of the first connector.

[0017] Figure 3 yes Figure 2 A is an enlarged structural diagram.

[0018] Figure 4 yes Figure 2Enlarged structural diagram at point B.

[0019] Figure 5 This is a schematic diagram of the copper plug-in structure.

[0020] Figure 6 It is a schematic diagram of the internal structure when the first connector and the second connector are plugged in.

[0021] Figure 7 It is a schematic diagram of the structure of connecting the handle and turning to unlock.

[0022] Figure numerals: 1. First connector; 2. Second connector; 3. Core cavity; 301. First ring tube; 302. Second ring tube; 4. Copper plug-in; 401. Crimping part; 402. Connecting part; 403. Socket part; 5. Step surface; 6. Limiting piece; 7. Connecting pin; 8. Arc-shaped piece; 9. Expanding part; 10. Wiring opening; 11. Middle screw sleeve; 12. Pressing screw sleeve; 13. Sealing gasket; 14. Connecting handle; 1401. Hook; 15. Connecting column; 16. Square sealing gasket; 17. Electric wire. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] This embodiment discloses an electrical connector, such as Figure 1-7 As shown, it includes a first connector 1 and a second connector 2 for plugging, the first connector 1 includes a plurality of core cavities 3 in a cylindrical shape and hollow inside, a first ring tube 301 and a second ring tube 302 with a diameter gradually reduced compared to the core cavity 3 are provided in the core cavity 3, a copper plug 4 is provided in the core cavity 3, the copper plug 4 includes a crimping portion 401, a connecting portion 402 and a socket portion 403, a step surface 5 is provided between the crimping portion 401 and the connecting portion 402, an inclined protruding limit plate 6 is provided on the connecting portion 402, and the step surface 5 and the limit plate 6 respectively abut against At both ends of the second ring tube 302, the outer sides of the connecting portion 402 and the limiting piece 6 are in contact with the inner surface of the first ring tube 301; through the above structure, the step surface 5 of the crimping portion 401 and the limiting piece 6 of the connecting portion 402 jointly clamp the second ring tube 302, so that the copper plug 4 is firmly connected in the axial direction, and the outer sides of the protrusions of the connecting portion 402 and the limiting piece 6 are in contact with the inner surface of the first ring tube 301, realizing a firm connection in the radial direction, so that the copper plug 4 is firmly limited in the core cavity 3 and will not become loose even if used for a long time. At the same time, a connecting pin 7 is fixedly provided on the second connector 2, and the connecting pin 7 is inserted into the core cavity 3 and is in contact with the inner surface of the socket portion 403. The connecting pin 7 is also configured as a conductor, such as copper, see Figure 6 After the pin is inserted into the socket portion 403, contact is formed to achieve electrical connection.

[0025] As a further preferred feature, the stopper 6 is inclined and protrudes toward the crimping portion 401, forming a flat surface toward the crimping portion 401 and an inclined surface toward the socket portion 403. The flat surface is used to engage with the second ring tube 302 to prevent it from retreating, while the inclined surface on the other side facilitates assembly. During installation, the copper insert 4 can be inserted into the core cavity 3 from top to bottom in the direction shown in the figure to complete the assembly.

[0026] Furthermore, there are two limiting pieces 6, which are arranged on both sides of the connecting portion 402. The limiting pieces 6 are arranged on both sides to ensure the balance of force.

[0027] For further information, please refer to Figure 5 The socket portion 403 comprises two symmetrically arranged curved pieces 8 with a gap between them. The two curved pieces 8 tilt and converge from the connection portion 402 toward the end. This arrangement tilts the socket portion 403, increasing radial force and contact between it and the connecting pin 7. Furthermore, a flared portion 9 is provided on the curved piece 8 at the end. This flared portion 9 guides the connecting pin 7 into the socket portion 403 more smoothly.

[0028] Furthermore, the first connector is provided with a wiring opening 10, an intermediate screw sleeve 11 and a compression screw sleeve 12 that cooperate with external cables, one end of the intermediate screw sleeve 11 is threadedly connected to the wiring opening 10, and the other end is threadedly connected to the compression screw sleeve 12, the intermediate screw sleeve 11 is provided with a convex ring, and a sealing pad 13 is provided between the outer end face of the wiring opening 10 and the convex ring, and the threads at the two ends of the intermediate screw sleeve 11 are preferably arranged oppositely. Through the above-mentioned arrangement, the good sealing of the wiring opening 10 is ensured by arranging the intermediate screw sleeve 11. Because assuming that the intermediate screw sleeve 11 is not provided, and the compression screw sleeve 12 is directly provided on the wiring opening 10, the sealing pad 13 will be arranged between the outer bottom end of the compression screw sleeve 12 and the wiring opening 10, and because the thickness of the cable harness is actually different, the rotation strength of different users is also different, so the screw-in amount of the compression screw sleeve 12 also can be different, and this just cannot ensure that the sealing pad between the two can be compressed when different harness thicknesses and different users rotate. However, it is different if an intermediate screw sleeve 11 is provided. The intermediate screw sleeve 11 first forms a seal with the wiring opening 10 to ensure a good seal of the wiring opening 10; and then it is connected to the clamping screw sleeve 12. At this time, due to the increase in the threads between the intermediate screw sleeve 11 and the clamping screw sleeve 12 and the overall wrapping distance of the cable harness, there is no need to focus on the seal between the intermediate screw sleeve 11 and the clamping screw sleeve 12. In this way, by providing an additional intermediate screw sleeve 11, a good seal at the wiring opening 10 is ensured.

[0029] Furthermore, in order to ensure the stability of the external connection of the connector, you can refer to Figure 1 and Figure 7The second connector 2 is provided with a pair of connecting handles 14 on the upper rotation, and a hook portion 1401 is provided on the connecting handle 14. A connecting column 15 is provided on the first connector 1. When the second connector is connected to the first connector, the connecting handle 14 is rotated so that the hook portion 1401 is hooked with the connecting column 15. With the above structure, when inserting, the first connector 1 is inserted into the second connector 2, and then the connecting handle 14 is rotated so that the hook portion 1401 is hooked with the connecting column 15, and a stable connection can be achieved. When pulling out, Figure 7 As shown by the arrows, first rotate the connecting handle 14 to both sides to separate the hook portion 1401 and the connecting post 15, and then pull out the first connector 1 along the direction of the middle arrow.

[0030] Furthermore, a square sealing gasket 16 is provided between the first connector 1 and the second connector 2. The square sealing gasket 16 is fixedly mounted on the first connector 1 or the second connector 2. With this structure, the gap between the connectors is sealed using the square sealing gasket 16. Only one sealing gasket is required in either the first connector 1 or the second connector 2 to achieve sealing. Those skilled in the art can configure this as needed. Of course, two sealing gaskets can also be provided, which is also within the scope of this embodiment.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electrical connector, comprising a first connector (1) and a second connector (2) for plugging, characterized in that: The first connector (1) comprises a plurality of core cavities (3) in a cylindrical shape and hollow inside, wherein a first ring tube (301) and a second ring tube (302) whose diameters are gradually reduced compared to the core cavity (3) are provided in the core cavity (3), and a copper plug (4) is provided in the core cavity (3), wherein the copper plug (4) comprises a crimping portion (401), a connecting portion (402) and a socket portion (403), and a step surface is provided between the crimping portion (401) and the connecting portion (402). (5), an inclined protruding limiting piece (6) is provided on the connecting portion (402), the step surface (5) and the limiting piece (6) respectively abut against the two ends of the second ring tube (302), and the outer sides of the connecting portion (402) and the limiting piece (6) abut against the inner surface of the first ring tube (301); a connecting pin (7) is fixedly provided on the second connecting head (2), and the connecting pin (7) is inserted into the core cavity (3) and abuts against the inner surface of the socket portion (403).

2. The electrical connector according to claim 1, wherein: The limiting piece (6) is inclined and protrudes toward one side of the crimping portion (401), and forms a plane toward the crimping portion (401) and an inclined surface toward the socket portion (403).

3. An electrical connector according to claim 1 or 2, characterized in that: There are two limiting pieces (6), and the two limiting pieces (6) are arranged on both sides of the connecting portion (402).

4. The electrical connector according to claim 1, wherein: The socket portion (403) comprises two symmetrically arranged arc-shaped pieces (8) with a gap therebetween, and the two arc-shaped pieces (8) are inclined and approach each other from the connecting portion (402) toward the port.

5. The electrical connector according to claim 4, wherein: The arc-shaped piece (8) is provided with a flared portion (9) at the end.

6. The electrical connector according to claim 1, wherein: The first connector is provided with a wiring port (10) for cooperating with an external cable, an intermediate screw sleeve (11) and a compression screw sleeve (12); one end of the intermediate screw sleeve (11) is threadedly connected to the wiring port (10), and the other end is threadedly connected to the compression screw sleeve (12); a convex ring is provided on the intermediate screw sleeve (11), and a sealing gasket (13) is provided between the outer end surface of the wiring port (10) and the convex ring.

7. The electrical connector according to claim 1, wherein: A pair of connecting handles (14) are rotatably provided on the upper portion of the second connecting head (2), and a hook portion (1401) is provided on the connecting handle (14), which is formed by bending. A connecting column (15) is provided on the first connecting head (1). When the second connecting head is connected to the first connecting head, the connecting handle (14) is rotated so that the hook portion (1401) is hooked with the connecting column (15).

8. The electrical connector according to claim 1, wherein: A square sealing gasket (16) is provided between the first connector (1) and the second connector (2), and the square sealing gasket (16) is fixedly provided on the first connector (1) or the second connector (2).

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