Wire Connector

Abstract

A wire connector is disclosed, which includes a sheath and at least one first terminal. The sheath has a receiving cavity. By providing a first opening and a second opening on the sheath that intersect with the communicating direction of the receiving cavity, the first terminal is fixedly connected to the sheath and the contact portion of the first terminal extends into the receiving cavity of the sheath from the first opening, so as to achieve stable connection between terminals, increase the effective current-carrying area, improve the load-bearing capacity of the wire connector, and enable the connection between terminals at a certain angle.

Description

Technical Field

[0001] The present invention relates to the field of electromechanical components, and particularly to a wire connector. Background Art

[0002] The power transmission between large-scale power equipment or between a power source and large-scale electromechanical equipment is often the transmission of high voltage and large current, and the electrical connection between wires requires a wire connector that can stably transmit electric energy. In the prior art, connectors often use cylindrical male terminals and cylindrical female terminals for connection. The effective contact area between the terminals is small, the current-carrying capacity is weak, and the terminals can only be connected in an opposite direction, which is not convenient for realizing the inclined connection between the terminals. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides a wire connector, which can increase the effective contact area between the terminals, improve the current-carrying capacity of the wire connector, and can realize the inclined connection between the terminals.

[0004] The wire connector provided by the embodiment of the present invention includes:

[0005] A sheath having a receiving cavity. The sheath has a first opening provided in a first direction and a second opening provided in a second direction. The first direction intersects the second direction, and both the first opening and the second opening communicate with the receiving cavity.

[0006] At least one first terminal configured to be fixedly connected to the sheath. The first terminal includes a first cable connection portion for connecting to a first wire and a first terminal contact portion at least partially disposed in the receiving cavity. The first terminal contact portion is configured to enter the receiving cavity from the first opening.

[0007] Preferably, the wire connector further includes:

[0008] At least one second terminal including a second cable connection portion for connecting to a second wire and a second terminal contact portion for electrically connecting to the first terminal. The second terminal contact portion enters the receiving cavity through the second opening.

[0009] Preferably, the wire connector further includes:

[0010] At least one elastic contact member disposed in the receiving cavity. The elastic contact member is formed with at least one first cavity and a third opening communicating with the first cavity. The third opening corresponds to the second opening, and the first cavity is configured to receive the second terminal contact portion.

[0011] Preferably, the wire connector includes two elastic contact members, and the first terminal is disposed between the two elastic contact members.

[0012] Preferably, the wire connector includes one elastic contact member, and the first cavity is further configured to accommodate the first terminal contact portion.

[0013] Preferably, the wire connector includes two of the second terminals, and the first terminal contact portion is disposed between the two second terminals.

[0014] Preferably, at least one anti-retreat spring piece is disposed on the elastic contact member, and corresponding anti-retreat grooves are disposed on the sheath and / or the first terminal contact portion. The anti-retreat grooves are configured to cooperate with the anti-retreat spring pieces to position the elastic contact member.

[0015] Preferably, the sheath includes a top plate and a bottom plate disposed opposite to each other, and a first side wall connecting one end of the top plate and one end of the bottom plate. The first opening is disposed opposite to the first side wall, and a positioning hole is disposed on the first side wall. A corresponding positioning block is disposed on the first terminal contact portion.

[0016] Preferably, the sheath includes a top plate and a bottom plate disposed opposite to each other, and a first side wall connecting one end of the top plate and one end of the bottom plate. The first opening is disposed opposite to the first side wall.

[0017] Preferably, at least one limiting convex block is further disposed on the top plate, the bottom plate and / or the first terminal contact portion. The limiting convex block protrudes into the accommodating cavity, and the limiting convex block is configured to deform the elastic contact member to limit the movement range of the second terminal in the accommodating cavity.

[0018] Preferably, at least one limiting piece is disposed at the third opening of the elastic contact member. The limiting piece is perpendicular to the top plate and the bottom plate, and the limiting piece is configured to contact the side surfaces of the top plate, the bottom plate and / or the first terminal contact portion to limit the position of the elastic contact member.

[0019] Preferably, at least one of the limiting pieces contacts the side surface of the first terminal contact portion;

[0020] A stop block is further disposed on the first terminal contact portion. The stop block extends in the second direction, and the stop block is configured to cooperate with the limiting piece to limit the relative position of the first terminal contact portion and the elastic contact member.

[0021] Preferably, the sheath is provided with at least one connecting ear. The connecting ear extends outward from the first opening to the outside of the accommodating cavity, and the connecting ear is configured to be fixedly connected to the first terminal through a fixing member.

[0022] Preferably, a plurality of contact elastic pieces are provided on the elastic contact member. The plurality of contact elastic pieces are arranged in parallel. The middle part of the contact elastic piece protrudes towards the first cavity. The contact elastic piece is configured to contact the second terminal.

[0023] Preferably, there is a bending part between the second cable connection part and the second terminal contact part of the second terminal so that the second cable connection part and the second terminal contact part are in different planes.

[0024] Preferably, the two second terminals are further configured to be able to be connected to each other through the second cable connection part, and the distance between the second terminal contact parts of the two second terminals is configured to be not less than the thickness of the first terminal contact part.

[0025] An embodiment of the present invention provides a wire connector, including a sheath and at least one first terminal. The sheath has a receiving cavity. By providing a first opening and a second opening on the sheath that intersect with the communication direction of the receiving cavity, the first terminal is fixedly connected to the sheath and the first terminal contact part extends into the receiving cavity of the sheath from the first opening, which can achieve stable connection between the terminals, increase the effective current-carrying area, improve the load-bearing capacity of the wire connector, and can achieve connection between the terminals at a certain angle. Description of the Drawings

[0026] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features and advantages of the present invention will become clearer. In the drawings:

[0027] Figure 1 is a three-dimensional structural schematic diagram of the wire connector according to an embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of the connection relationship between the sheath, the first terminal and the elastic contact member according to an embodiment of the present invention;

[0029] Figure 3 is an exploded structural schematic diagram of the sheath, the first terminal and the elastic contact member of the wire connector according to an embodiment of the present invention;

[0030] Figure 4 is a three-dimensional structural schematic diagram of the sheath according to an embodiment of the present invention;

[0031] Figure 5 is a three-dimensional structural schematic diagram of the elastic contact member according to an embodiment of the present invention;

[0032] Figure 6 is a three-dimensional structural schematic diagram of the first terminal according to an embodiment of the present invention.

[0033] Description of the Reference Numerals:

[0034] DIR1 - First direction; DIR2 - Second direction;

[0035] 1 - Sheath; 11 - Accommodating cavity; 12 - First opening; 13 - Second opening; 14 - Anti - retreat groove; 15 - Top plate; 16 - Bottom plate; 17 - First side wall; 171 - Positioning hole; 18 - Limiting projection; 19 - Connecting ear; 2 - First terminal; 21 - First cable connecting part; 22 - First terminal contact part; 221 - Positioning block; 222 - Limiting projection; 223 - Stopper; 23 - Anti - retreat groove; 3 - Second terminal; 31 - Second cable connecting part; 32 - Second terminal contact part; 33 - Bending part; 4 - Elastic contact part; 41 - First cavity; 42 - Third opening; 43 - Anti - retreat elastic piece; 44 - Limiting piece; 45 - Contact elastic piece; 5 - Fixing piece; 6 - First wire. Detailed implementation mode

[0036] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these details. In order to avoid obscuring the essence of the present invention, well - known methods, processes, flows, elements and circuits are not described in detail.

[0037] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0038] Unless the context clearly requires otherwise, the words such as "including", "comprising" and the like in the whole application document should be interpreted as the meaning of including rather than exclusive or exhaustive meaning; that is, the meaning of "including but not limited to".

[0039] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0040] Unless otherwise clearly defined and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] When an element or layer is referred to as being "on," "attached to," "connected to," or "coupled to" another element or layer, it can be directly on the other element or layer, directly attached, connected, or coupled to the other element or layer, or there can be intervening elements or layers. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0042] Figure 1 is a schematic perspective view of a wire connector according to an embodiment of the present invention. Figure 2 and Figure 3 are respectively a schematic view of the connection relationship and an exploded structural view of a sheath, a first terminal, and an elastic contact member according to an embodiment of the present invention. As Figures 1-3 shown, the wire connector according to an embodiment of the present invention includes a sheath 1 and at least one first terminal 2. The sheath 1 has a receiving cavity 11, as well as a first opening 12 and a second opening 13 that communicate with the receiving cavity 11. The first opening 12 is arranged along a first direction DIR1, and the second opening 13 is arranged along a second direction DIR2, where the first direction DIR1 intersects with the second direction DIR2. The first terminal 2 is fixedly connected to the sheath 1. The first terminal 2 includes a first cable connection portion 21 and a first terminal contact portion 22. The first cable connection portion 21 is used to connect to a first wire 6, and the first terminal contact portion 22 enters the receiving cavity 11 from the first opening 12.

[0043] The wire connector further includes a second terminal 3 corresponding to the first terminal 2. The second terminal 3 includes a second cable connection portion 31 for connecting to a second wire and a second terminal contact portion 32 for electrically connecting to the first terminal 2. The second terminal contact portion 32 can enter the receiving cavity 11 from the second opening 13 and be electrically connected to the first terminal contact portion 22. The first terminal contact portion 22 and the second terminal contact portion 32 can be substantially formed in a flat plate shape, which can increase the contact area between the first terminal 2 and the second terminal 3 and improve the current-carrying capacity of the wire connector. The first cable connection portion 21 and the second cable connection portion 31 can also be substantially in a flat plate shape. Electrical connection between the first cable connection portion 21 and the first wire 6 and between the second cable connection portion 31 and the second wire can be achieved by means such as crimping and ultrasonic welding. The first terminal 2 and the second terminal 3 can be manufactured by stamping, which can improve production efficiency.

[0044] Figure 4 is a schematic perspective view of the sheath according to an embodiment of the present invention. As Figures 1-4As shown, the first opening 12 of the sheath 1 is arranged along the first direction DIR1, and the second opening 13 is arranged along the second direction DIR2, wherein the first direction DIR1 intersects with the second direction DIR2, so as to prevent interference of other terminals when some terminals are plugged in and out, and also facilitate electrical connection between wires extending in different directions, and can be used in a narrow space. Optionally, the first direction DIR1 and the second direction DIR2 are perpendicular.

[0045] Optionally, the sheath 1 may also have a fourth opening, which is opposite to the second opening 13 , that is, the sheath 1 is completely penetrated in the second direction DIR2 , so that the second terminal contact portion 32 may also enter the accommodating cavity 11 from the fourth opening to be electrically connected to the first terminal 2 .

[0046] Figure 5 FIG. 1 is a schematic diagram of the three-dimensional structure of the elastic contact member according to an embodiment of the present invention. Figure 5 As shown, in order to achieve good contact between the first terminal 2 and the second terminal 3 to ensure the stability of the electrical connection, the wire connector may further include at least one elastic contact piece 4. The elastic contact piece 4 is disposed in the accommodating cavity 11, forming at least one first cavity 41 and a third opening 42 communicating with the first cavity 41. The third opening 42 corresponds to the second opening 13, and the second terminal contact portion 32 can enter the first cavity 41 from the third opening 42.

[0047] like Figure 2 , Figure 3 and Figure 5 As shown, the elastic contact member 4 may be a structure with a cross section approximately in the shape of a "匚" and basically composed of three surfaces, wherein the three surfaces include a top surface, a bottom surface and a side surface, and the side surface may be perpendicular to the top surface and the bottom surface.

[0048] A plurality of contact springs 45 may be provided on the elastic contact member 4, and the plurality of contact springs 45 are provided in parallel and the middle of the contact springs 45 protrudes toward the direction of the first cavity 41, and the contact springs 45 are used to contact the second terminal contact portion 32. The contact springs 45 may be provided on the top and bottom surfaces of the elastic contact member 4. The elastic contact member 4 is made of a conductive material. Since the contact springs 45 have a certain elasticity, when the second terminal 3 enters the first cavity 41, the contact springs 45 can be pressed against the second terminal 3, thereby, the elastic contact member 4 can conduct the first terminal 2 and the second terminal 3 in contact therewith, and can also relatively fix the second terminal 3, to a certain extent, avoid the second terminal 3 from loosening and shifting, and increase the conduction area between the first terminal 2 and the second terminal 3. The provision of the elastic contact member 4 can also slow down the wear of the terminal surface and extend the life of the first terminal 2 and the second terminal 3. The contact springs 45 can be formed by cutting a plurality of parallel grooves on the elastic contact member 4 and then using stamping or bending.

[0049] The sheath 1 may include a relatively arranged top plate 15 and bottom plate 16, and a first side wall 17 connecting one end of the top plate 15 and one end of the bottom plate 16. The first opening 12 and the first side wall 17 are relatively arranged. Optionally, the first side wall 17 is substantially perpendicular to the top plate 15 and the bottom plate 16. The sheath 1 can be integrally formed by injection molding, stamping, etc., which can simplify the assembly steps and ensure the strength of the overall structure of the sheath 1.

[0050] Figure 6 is a three-dimensional structural schematic diagram of the first terminal of the embodiment of the present invention. As Figures 1-4 and Figure 6 shown, a connecting ear 19 can be provided at the first opening 12 of the sheath 1. The connecting ear 19 extends away from the receiving cavity 11 from the first opening 12. The first terminal 2 and the connecting ear 19 can be connected by a fixing member 5 so that the first terminal 2 and the sheath 1 are fixed to each other. For example, corresponding connecting holes are provided on the connecting ear 19 and the first terminal 2. The fixing member 5 can be a bolt or a pin. By passing the bolt or the pin through the connecting holes on the connecting ear 19 and the first terminal 2, the connecting ear 19 and the first terminal 2 can be fixedly connected. Preferably, the connecting ear 19 and the first terminal 2 can be connected by more than two fixing members 5 to prevent relative rotation between the first terminal 2 and the sheath 1 that can occur when only connected by one fixing member 5.

[0051] A positioning hole 171 can be provided on the first side wall 17 of the sheath 1. One end of the first terminal contact portion 22 facing the first side wall 17 has a protruding positioning block 221 corresponding to the positioning hole 171. Through the cooperation of the positioning hole 171 and the positioning block 221, the first terminal 2 can be prevented from shaking.

[0052] In an alternative embodiment, the wire connector has two elastic contact members 4. After the first terminal contact portion 22 enters the receiving cavity 11 from the first opening 12, the receiving cavity 11 is divided into two spaces. The two elastic contact members 4 are respectively arranged in the two spaces on both sides of the first terminal 2, that is, the first terminal 2 is arranged between the two elastic contact members 4. Correspondingly, the wire connector may include two second terminals 3. The second terminal contact portions 32 of the two second terminals 3 are respectively placed in the first cavities 41 of the two elastic contact members 4, that is, the first terminal contact portion 22 is located between the two second terminals 3 and the two elastic contact members 4. Of course, the two elastic contact members 4 can also be stacked on the same side of the first terminal 2, that is, the two elastic contact members 4 are in contact with each other, and the two second terminals 3 are electrically connected to each other through the elastic contact members 4 and are also electrically connected to the first terminal 2.

[0053] In another alternative embodiment, the wire connector has an elastic contact member 4. The top surface of the elastic contact member 4 contacts the top plate 15 of the sheath 1, and the bottom surface of the elastic contact member 4 contacts the bottom plate 16 of the sheath 1. Both the first terminal contact portion 22 and the second terminal contact portion 32 are provided in the first cavity 41 of the elastic contact member 4. Optionally, the first terminal contact portion 22 is disposed in the middle of the receiving cavity 11, dividing the receiving cavity 11 into two spaces. The two second terminal contact portions 32 are respectively disposed in the two spaces and are electrically connected to the first terminal contact portion 22, which can increase the contact area between the terminals.

[0054] Of course, those skilled in the art should understand that on the premise that the overload capacity can meet the requirements, the wire connector may also be electrically connected to the first terminal 2 with only one second terminal 3.

[0055] To increase the current-carrying capacity of the wire connector, there is a bending portion 33 between the second cable connection portion 31 and the second terminal contact portion 32 of the second terminal 3. Thus, the two second terminals 3 can be fixedly connected through the second cable connection portion 31 and connected to the second wire. The two second terminal contact portions 32 can be respectively inserted into the first cavity 41 from both sides of the first terminal contact portion 22 and electrically connected to the first terminal 2. Thereby, the effective conductive area between the first wire 6 and the second wire can be increased, and the overload capacity of the wire connector can be increased. To enable the second terminal contact portion 32 and the first terminal contact portion 22 to be parallel so that the second terminal 3 can be smoothly inserted and removed and form a stable connection with the first terminal 2, the distance between the second terminal contact portions 32 of the two second terminals 3 should not be less than the thickness of the first terminal contact portion 22. Preferably, the distance between the second terminal contact portions 32 of the two second terminals 3 is adapted to the distance between the two first cavities 41 or the distance between the two spaces formed by dividing a first cavity 41 by the first terminal 2.

[0056] At least one anti-withdrawal elastic piece 43 can be arranged on the elastic contact piece 4, and a corresponding anti-withdrawal groove 14 is provided on the sheath 1. The anti-withdrawal elastic piece 43 is bent towards the anti-withdrawal groove 14 and extends towards the direction close to the second opening 13. Since the anti-withdrawal elastic piece 43 has elasticity, the elastic contact piece 4 can be smoothly inserted into the accommodating cavity 11 from the second opening 13. When the elastic contact piece 4 moves to the anti-withdrawal groove 14, due to the increase in the accommodating space, the anti-withdrawal elastic piece 43 returns to its original shape, and the anti-withdrawal groove 14 blocks the anti-withdrawal elastic piece 43 from withdrawing from the anti-withdrawal groove 14 towards the second opening 13, thereby blocking the elastic contact piece 4 from withdrawing from the second opening 13. When it is necessary to take out the elastic contact piece 4 from the second opening 13, a tool can be used to extend into the anti-withdrawal groove 14 to press the anti-withdrawal elastic piece 43 to bend the anti-withdrawal elastic piece 43 towards the first cavity 41, or, squeeze the top surface and the bottom surface of the elastic contact piece 4 to make the anti-withdrawal elastic piece 43 withdraw from the anti-withdrawal groove 14, and the elastic contact piece 4 can smoothly withdraw from the second opening 13 from the accommodating cavity 11.

[0057] Preferably, both the top plate 15 and the bottom plate 16 of the sheath 1 have anti-withdrawal grooves 14, and corresponding anti-withdrawal grooves 23 can also be arranged on the first terminal 2. Anti-withdrawal elastic pieces 43 are arranged on both the top surface and the bottom surface of the elastic contact piece 4, so that the anti-withdrawal function can be better realized, and the elastic contact piece 4 can be prevented from moving when the second terminal 3 is pulled out.

[0058] To better position the elastic contact piece 4, the elastic contact piece 4 can also have a limiting piece 44. The limiting piece 44 is arranged at the third opening 42 of the elastic contact piece 4. The limiting piece 44 can be perpendicular to the top plate 15 and the bottom plate 16 of the sheath 1. Preferably, the limiting pieces 44 are arranged on the edges of both the top surface and the bottom surface of the elastic contact piece 4. Thus, when the elastic contact piece 4 is pushed into a predetermined position from the second opening 13, the limiting piece 44 contacts the side surfaces of the top plate 15, the bottom plate 16 and / or the first terminal contact part 22, thereby limiting the position of the elastic contact piece 4 and preventing the elastic contact piece 4 from entering the accommodating cavity 11 too deep and being difficult to take out. The cooperation of the anti-withdrawal elastic piece 43 and the anti-withdrawal grooves 14, 23 and the limiting piece 44 can prevent the elastic contact piece 4 from moving when the second terminal 3 is inserted and pulled out.

[0059] The top plate 15 and the bottom plate 16 of the sheath 1 can also have limiting bumps 18 for preventing the second terminal 3 from moving. The limiting bumps 18 protrude towards the accommodating cavity 11, deforming the elastic contact piece 4, thereby clamping the second terminal 3 and preventing the second terminal 3 from moving, enabling the second terminal 3 to be relatively fixed with the first terminal 2 to achieve stable electrical connection, enabling high-current and high-voltage power transmission, and at the same time preventing the second terminal 3 from moving frequently to generate electric sparks and causing danger. Preferably, corresponding limiting bumps 222 can also be arranged on the first terminal contact part 22.

[0060] When at least one limiting piece 44 is opposite to the side surface of the first terminal contact part 22, a protruding stop block 223 can be further arranged on the side surface of the first terminal contact part 22, and the stop block 223 can be arranged at a position close to the first side wall 17. The stop block 223 cooperates with the aforementioned limiting piece 44 to limit the relative position between the elastic contact piece 4 and the first terminal 2 and prevent the elastic contact piece from having a large displacement.

[0061] To reduce costs and improve the interchangeability between components, the second terminal 3 and the first terminal 2 can be manufactured in exactly the same shape.

[0062] The wire connector according to the embodiment of the present invention can be widely applied to various occasions, such as connecting between power equipment and being used as a connector between a large electrical equipment and a power source. Those skilled in the art can apply the wire connector to specific equipment according to actual needs and common general knowledge in the art, and details are not described herein again.

[0063] The wire connector provided by the embodiment of the present invention includes a sheath 1 and at least one first terminal 2. The sheath 1 has a receiving cavity 11. By arranging a first opening 12 and a second opening 13 on the sheath 1 that intersect with the communicating direction of the receiving cavity 11, the first terminal 2 is fixedly connected to the sheath 1 and the first terminal contact part 22 extends into the receiving cavity 11 of the sheath 1 from the first opening 12, so as to achieve stable connection between terminals, increase the effective current-carrying area, improve the load-bearing capacity of the wire connector, and enable connection between terminals at a certain angle.

[0064] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wire connector, characterized in that, Comprising: A sheath (1) having a receiving cavity (11), the sheath (1) having a first opening (12) provided in a first direction (DIR1) and a second opening (13) provided in a second direction (DIR2), the first direction (DIR1) intersecting the second direction (DIR2), and both the first opening (12) and the second opening (13) being in communication with the receiving cavity (11); At least one first terminal (2) configured to be fixedly connected to the sheath (1), the first terminal (2) including a first cable connection portion (21) for connecting to a first wire (6) and a first terminal contact portion (22) at least partially disposed within the receiving cavity (11), the first terminal contact portion (22) being configured to enter the receiving cavity (11) from the first opening (12); The sheath (1) includes a U-shaped structure, the U-shaped structure including a top plate (15), a first side wall (17), and a bottom plate (16) connected in sequence, the top plate (15), the first side wall (17), and the bottom plate (16) surrounding to form the receiving cavity (11) having the first opening (12), and the U-shaped structure further having a fourth opening that is in communication with the receiving cavity (11) and faces in the opposite direction to the second opening; The first terminal contact portion (22) is spaced between the top plate (15) and the bottom plate (16) and divides the receiving cavity (11) into two spaces; The wire connector further includes: At least one second terminal (3) including a second cable connection portion (31) for connecting to a second wire and a second terminal contact portion (32) for electrically connecting to the first terminal (2), the second terminal contact portion (32) entering the receiving cavity (11) through the second opening (13) or the fourth opening.

2. The wire connector according to claim 1, wherein, The wire connector further includes: At least one elastic contact member (4) disposed within the space, the elastic contact member (4) having formed therein at least one first cavity (41) and a third opening (42) in communication with the first cavity (41), the third opening (42) corresponding to the second opening (13), and the first cavity (41) being configured to receive the second terminal contact portion (32).

3. The wire connector according to claim 2, characterized in that, The wire connector includes two elastic contact members (4), and the first terminal (2) is disposed between the two elastic contact members (4).

4. The wire connector according to claim 2, characterized in that, The wire connector includes one elastic contact member (4), and the first cavity (41) is further configured to receive the first terminal contact portion (22).

5. The wire connector according to claim 3 or 4, characterized in that, The wire connector includes two of the second terminals (3), and the first terminal contact portion (22) is disposed between the two second terminals (3).

6. The wire connector according to any one of claims 2-4, characterized in that, At least one anti-withdrawal elastic piece (43) is provided on the elastic contact member (4), and corresponding anti-withdrawal grooves (14, 23) are provided on the sheath (1) and / or the first terminal contact portion (22), and the anti-withdrawal grooves (14, 23) are configured to cooperate with the anti-withdrawal elastic piece (43) to position the elastic contact member (4).

7. The wire connector according to any one of claims 1-4, characterized in that, The first opening (12) is disposed opposite to the first side wall (17). A positioning hole (171) is provided on the first side wall (17), and a corresponding positioning block (221) is provided on the first terminal contact portion (22).

8. The wire connector according to any one of claims 2-4, characterized in that, The first opening (12) is disposed opposite to the first side wall (17).

9. The wire connector according to claim 8, characterized in that, At least one limiting bump (18, 222) is further provided on the top plate (15), the bottom plate (16) and / or the first terminal contact portion (22). The limiting bump (18, 222) protrudes towards the accommodation cavity (11), and the limiting bump (18, 222) is configured to deform the elastic contact member (4) to limit the movement range of the second terminal (3) within the accommodation cavity (11).

10. The wire connector according to claim 8, characterized in that, At least one limiting piece (44) is provided at the third opening (42) of the elastic contact member (4). The limiting piece (44) is perpendicular to the top plate (15) and the bottom plate (16), and the limiting piece (44) is configured to contact the side surfaces of the top plate (15), the bottom plate (16) and / or the first terminal contact portion (22) to limit the position of the elastic contact member (4).

11. The wire connector according to claim 10, characterized in that, At least one of the limiting pieces (44) contacts the side surface of the first terminal contact portion (22); The first terminal contact portion (22) is further provided with a stop block (223). The stop block (223) extends in the second direction, and the stop block (223) is configured to cooperate with the limiting piece (44) to limit the relative position between the first terminal contact portion (22) and the elastic contact member (4).

12. The wire connector according to any one of claims 1-4, characterized in that, The sheath (1) is provided with at least one connecting ear (19). The connecting ear (19) extends out of the accommodation cavity (11) from the first opening (12), and the connecting ear (19) is configured to be fixedly connected to the first terminal (2) through a fixing member (5).

13. The wire connector according to any one of claims 2-4, characterized in that, A plurality of contact elastic pieces (45) are provided on the elastic contact member (4). The plurality of contact elastic pieces (45) are arranged in parallel. The middle portion of the contact elastic piece (45) protrudes towards the first cavity (41), and the contact elastic piece (45) is configured to contact the second terminal (3).

14. The wire connector according to any one of claims 1-4, characterized in that, A bending portion (33) is provided between the second cable connection portion (31) and the second terminal contact portion (32) of the second terminal (3) so that the second cable connection portion (31) and the second terminal contact portion (32) are in different planes.

15. The wire connector according to claim 14, characterized in that, The two second terminals (3) are further configured to be able to be connected to each other through the second cable connection portion (31), and the distance between the second terminal contact portions (32) of the two second terminals (3) is configured to be not less than the thickness of the first terminal contact portion (22).

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