Female terminal, terminal assembly and connector

Abstract

The utility model provides a female terminal, a terminal assembly and a connector, and the female terminal comprises a connecting part, one end of which is provided with a welding part; the inserting part is connected to the end, away from the welding part, of the connecting part; the inserting part is in a cylinder shape with consistent outer diameter; a plugging space for accommodating a male terminal is formed in the plugging part; the insertion space is composed of a transition section and a holding section; the inner diameter of the transition section is gradually reduced; when being connected with the male terminal, the male terminal enters the holding section through the transition section. At least one slot is also formed in the inserting part; and the wrapping piece is sleeved on the inserting part. According to the female terminal, the plugging part is connected with the connecting part, so that the plugging part is prevented from falling off; the transition section can provide guidance for insertion of the male terminal, so that connection between the male terminal and the female terminal is facilitated; in addition, the wrapping part can apply inward pressure to the plugging part, so that the risk of permanent deformation of the plugging part is avoided, and the service life of the male terminal and the female terminal is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of connectors, and specifically relates to a female terminal, a terminal assembly, and a connector. Background Art

[0002] A connector generally includes a male housing, a female housing, and a terminal assembly. The terminal assembly includes a male terminal and a female terminal. The male terminal is installed in the male housing, the female terminal is installed in the female housing, and the female terminal is formed with a plug hole. The male terminal is inserted into the plug hole to achieve electrical connection with the female terminal.

[0003] In the prior art, in order to prevent poor contact between the male terminal and the female terminal, the diameter of the male terminal is usually made larger than the diameter of the plug hole, so that the male terminal is not easily inserted into the plug hole. Moreover, during the repeated insertion and extraction process of the male terminal and the female terminal, not only will the male terminal and the female terminal be worn, but also the female terminal will be permanently deformed, which will further cause poor contact between the male terminal and the female terminal and reduce the service life of the connector. In addition, in the prior art, an elastic member is additionally provided in the female terminal to assist in achieving a tight connection effect on the male terminal by the elastic member. However, in this method, once the elastic member falls off, the effective connection between the male terminal and the female terminal cannot be guaranteed. Summary of the Utility Model

[0004] This application mainly provides a female terminal, a terminal assembly, and a connector to solve the technical problems in the prior art that the male terminal is not easily inserted into the female terminal and the male terminal and the female terminal cannot ensure sufficient connection for a long time.

[0005] To solve the above technical problems, this application provides a female terminal for a connector, including: a connecting portion, one end of the connecting portion is formed with a welding portion; a plugging portion, connected to the end of the connecting portion away from the welding portion; the plugging portion is in the shape of a cylinder with a uniform outer diameter; a plugging space for accommodating the male terminal is formed in the plugging portion; the plugging space is composed of a transition section and a holding section; the inner diameter of the transition section gradually becomes smaller; when connected to the male terminal, the male terminal enters the holding section through the transition section; at least one slot is also opened on the plugging portion; and, a covering member sleeved on the plugging portion.

[0006] Optionally, the covering member is in the shape of a cylinder, and the inner diameter of the covering member at one end close to the connecting portion is larger than the outer diameter of the plugging portion; the inner diameter of the covering member gradually becomes smaller from one end close to the connecting portion to the other end away from the connecting portion.

[0007] Optionally, a receiving space is formed inside the covering member, and the plugging portion is received in the receiving space; a ring-shaped stopping portion is provided at an end of the covering member away from the connecting portion, and the diameter of the through hole provided by the stopping portion is greater than or equal to the maximum inner diameter of the transition section.

[0008] Optionally, in the installed state, the end of the plugging portion away from the connecting portion abuts against the stopping portion.

[0009] Optionally, a first clamping groove is formed in the receiving space, and a first clamping portion adapted to the first clamping groove is formed on the plugging portion.

[0010] Optionally, a first sealant portion is formed at one end of the connecting portion close to the plugging portion; a first welding groove is formed on the welding portion.

[0011] The present application further provides a terminal assembly, including a male terminal and the female terminal as described above. When the male terminal is inserted into the plugging portion, the plugging portion generates a micro-deformation and clamps the male terminal.

[0012] Optionally, the male terminal includes a plugging end and a welding end. A second welding groove is formed on the welding end; the end of the plugging end is hemispherical; a second sealant portion is further formed on the male terminal.

[0013] Optionally, a second clamping groove is formed inside the plugging portion, and a second clamping portion adapted to the second clamping groove is formed on the plugging end.

[0014] The present application further provides a connector, including a female housing, a male housing and at least two terminal assemblies as described above. The female housing is adapted to the male housing. The female terminal is installed in the female housing, and the male terminal is installed in the male housing.

[0015] The beneficial effects of the present application are as follows: The female terminal provided by the present application can ensure that the plugging portion will not fall off by connecting the plugging portion and the connecting portion; and since a transition section is provided on the plugging portion, it provides guidance for the insertion of the male terminal and facilitates the connection between the male terminal and the female terminal; in addition, by providing a wrapping body outside the plugging portion, when the plugging portion generates an outward deformation, the wrapping body can apply an inward pressure to it, eliminating the risk of permanent deformation of the plugging portion; it can ensure the tight connection between the male terminal and the female terminal, and further improve the service life of the male terminal and the female terminal. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 is a schematic perspective view of a connector in an embodiment of the present application;

[0018] Figure 2 is a schematic perspective view of a female terminal in an embodiment of the present application;

[0019] Figure 3 is an exploded view of a female terminal in an embodiment of the present application;

[0020] Figure 4 is Figure 2 a cross-sectional view along line A-A in

[0021] Figure 5 is Figure 4 an enlarged view at B in

[0022] Figure 6 is a schematic perspective view of a male terminal in an embodiment of the present application;

[0023] Figure 7 is a cross-sectional view of a terminal assembly in an embodiment of the present application. Specific Embodiments

[0024] The following will further describe the present application in detail in conjunction with the drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only some embodiments of the present application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0025] The terms "first", "second", and "third" in this application are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and alternatively defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the drawings). If the specific posture changes, then the directional indication also changes accordingly. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0026] Reference herein to "embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0027] Please refer to Figure 1 , this application provides a connector 60, which includes at least two terminal assemblies, a female housing 30, and a male housing 40. Each terminal assembly includes a female terminal 10 and a male terminal 20. The female terminal 10 is adapted to the male terminal 20. The female housing 30 is adapted to the male housing 40, and the female terminal 10 is installed in the female housing 30, and the male terminal 20 is installed in the male housing 40.

[0028] In Figure 1 , the female housing 30 and the male housing 40 are inserted and arranged so that the male terminal 20 is electrically connected to the female terminal 10. It should be noted that in other embodiments, the female housing 30 can also be snap-connected to the male housing 40.

[0029] Optionally, both the female housing 30 and the male housing 40 are plastic seals, or the female housing 30 and the male housing 40 are waterproofed, so that the connector 60 can be applied to underwater robots.

[0030] Such as Figure 2As shown, the female terminal 10 includes a connecting portion 100, a plugging portion 200, and a covering member 300. The plugging portion 200 is connected to one end of the connecting portion 100 to ensure that there is no risk of the plugging portion 200 falling off, and the covering member 300 is sleeved on the plugging portion 200.

[0031] Among them, a welding portion 110 is formed at one end of the connecting portion 100. The plugging portion 200 is connected to the end of the connecting portion 100 away from the welding portion 110, and the welding portion 110 is used for welding with the conductor of the cable.

[0032] Optionally, the connecting portion 100, the welding portion 110, and the plugging portion 200 are all made of conductive metal material and are integrally formed.

[0033] Furthermore, a first welding groove 111 is formed on the welding portion 110. The first welding groove 111 is used for placing the conductor of the cable to be welded, so as to facilitate the staff to quickly and accurately weld the conductor of the cable to the welding portion 110, thereby improving the production efficiency and the product yield.

[0034] As Figure 3 shown, a first sealing portion 120 is formed at the end of the connecting portion 100 close to the plugging portion 200. The first sealing portion 120 can be a sealing groove or a sealing flange, which is used for snap connection with the female base 30, so that the female terminal 10 can be stably installed on the female base 30. It should be noted that in other embodiments, the first sealing portion 120 can also be provided at the end of the plugging portion 200 close to the connecting portion 100.

[0035] As Figure 2 and Figure 3 shown, the plugging portion 200 is in the shape of a cylinder with a consistent outer diameter. An insertion space 210 for accommodating the male terminal 20 is formed inside the plugging portion 200, so that the plugging portion 200 is electrically connected to the male terminal 20. The insertion space 210 is composed of a transition section 211 and a holding section 212. When the male terminal 20 is inserted into the insertion space 210, the male terminal 20 passes through the transition section 211 and enters the holding section 212. And in the direction of the transition section 211 towards the holding section 212, that is, in the direction of the insertion of the male terminal 20, the inner diameter of the transition section 211 gradually becomes smaller to guide the insertion of the male terminal 20, making it easier for the male terminal to insert into the holding section 212, thereby improving the user experience.

[0036] In the direction of the insertion of the male terminal 20, the inner diameter of the holding section 212 remains unchanged, and the inner diameter of the holding section 212 is slightly smaller than the outer diameter of the male terminal 20, so that the plugging portion 200 can clamp the male terminal 20 after the male terminal 20 is inserted into the holding section 212.

[0037] As Figure 2 and Figure 3As shown, at least one slotted groove 220 is further formed in the insertion portion 200, so that when the male terminal 20 is received in the holding section 212, the insertion portion 200 undergoes a slight deformation and clamps the male terminal 20, thereby reducing the wear between the male terminal 20 and the insertion portion 200, improving the service life of the male terminal 20 and the female terminal 10, and preventing the male terminal 20 from slipping out of the holding section 212 to ensure that electrical signals can be normally transmitted between the male terminal 20 and the female terminal 10.

[0038] As Figure 3 shown, the extending direction of the slotted groove 220 is parallel to the insertion direction of the male terminal 20, that is, the slotted groove 220 extends linearly, and the extending length of the slotted groove 220 is greater than or equal to half of the extending length of the insertion space 210 and less than or equal to the extending length of the insertion space 210, so that the insertion portion 200 is more likely to undergo a slight deformation. It should be noted that in other embodiments, the slotted groove 220 may also be arranged in a curved and winding manner.

[0039] In Figure 3 it, the number of the slotted grooves 220 is 4, and the 4 slotted grooves 220 are evenly spaced in the circumferential direction of the insertion portion 200. It can be understood that the number of the slotted grooves 220 can be set according to actual needs. For example, the larger the diameter of the insertion space 210, the more the number of the slotted grooves 220 can be, and the smaller the diameter of the insertion space 210, the fewer the number of the slotted grooves 220 can be.

[0040] As Figure 2 shown, the covering member 300 is in a cylindrical shape and is sleeved outside the insertion portion 200. When the male terminal 20 is inserted into the insertion space 210, the insertion portion 200 will generate an outward deformation, and the covering member 300 can apply an inward pressure to the insertion portion 200, eliminating the risk of permanent deformation of the insertion portion 200; and can ensure the tight connection between the male terminal 20 and the female terminal 10, further improving the service life of the male terminal 20 and the female terminal 10.

[0041] Optionally, the covering member 300 can be made of a metal material or an elastic plastic material, which is not limited herein.

[0042] Furthermore, after the covering member 300 is sleeved on the insertion portion 200, it can block the slotted groove 220, thereby preventing the raw material from flowing into the insertion space 210 from the slotted groove 220 when the female base 30 and the female terminal 10 are injection molded.

[0043] Furthermore, the inner diameter of the covering member 300 at one end close to the connecting portion 100 is greater than the outer diameter of the insertion portion 200. Exemplarily, as Figure 4 and Figure 5As shown, the covering member 300 is formed with an inclined surface 312 at one end close to the connecting portion 100, so that the inner diameter of the covering member 300 at one end close to the connecting portion 100 is larger than the outer diameter of the plugging portion 200, and the inner diameter of the covering member 300 at one end close to the connecting portion 100 gradually becomes smaller. The inclined surface 312 can guide the covering member 300 when it is sleeved onto the plugging portion 200, so as to reduce the time for the covering member 300 to be sleeved onto the plugging portion 200, thereby improving production efficiency.

[0044] The outer diameters of the covering member 300 are the same, but the thickness of the covering member 300 gradually increases from the end close to the connecting portion 100 to the end far from the connecting portion 100, that is, the inner diameter of the covering member 300 gradually decreases from the end close to the connecting portion 100 to the end far from the connecting portion 100, so that the covering member 300 can be stably sleeved on the connecting portion 100.

[0045] As Figure 3 shown, a receiving space 311 is formed in the covering member 300, and the plugging portion 200 is received in the receiving space 311; and a stop portion 320 is provided on the end of the covering member 300 far from the connecting portion 100, and a through hole 321 for the male terminal 20 to pass through is formed on the stop portion 320, and the diameter of the through hole 321 is greater than or equal to the maximum inner diameter of the transition section 211. During the connection process between the male terminal 20 and the female terminal 10, the male terminal 20 will sequentially pass through the through hole 321, the transition section 211 and the holding section 212.

[0046] In Figure 2 when the covering member 300 is sleeved on the plugging portion 200, the end of the plugging portion 200 far from the connecting portion 100 abuts against the stop portion 320.

[0047] As Figure 4 and Figure 5 shown, a first clamping groove 313 is formed in the receiving space 311 of the covering member 300, and a first clamping portion 230 adapted to the first clamping groove 313 is formed on the plugging portion 200. The first clamping groove 313 is arranged circumferentially on the inner wall of the receiving space 311, and the first clamping groove 313 is a convex ring and is arranged circumferentially on the outer wall of the plugging portion 200. The cooperation between the first clamping groove 313 and the first clamping portion 230 can make the covering member 300 stably sleeved on the plugging portion 200 to prevent the covering member 300 from detaching from the plugging portion 200.

[0048] During the connection process of the male terminal 20 and the female terminal 10, the male terminal 20 will sequentially pass through the through hole 321, the transition section 211, and the holding section 212. When the male terminal 20 is inserted into the holding section 212, since the outer diameter of the male terminal 20 is slightly larger than the diameter of the holding section 212, the insertion part 200 will generate a slight outward deformation and clamp the male terminal 20, while the covering part 300 will generate an inward pressure to prevent the insertion part 200 from undergoing large deformation and permanent deformation, thereby improving the service life of the male terminal 20 and the female terminal 10.

[0049] As Figure 6 shown, the male terminal 20 includes an insertion end 500 and a welding end 800 connected to the insertion end 500. Both the insertion end 500 and the welding end 800 are made of conductive metal material and are integrally formed. The insertion end 500 is inserted into the through hole 321, the transition section 211, and the holding section 212, and the welding end 800 is used for welding with the conductor of the cable.

[0050] In Figure 6 , the end of the insertion end 500 is hemispherical to provide guidance when the insertion end 500 is inserted into the through hole 321, the transition section 211, and the holding section 212, thereby improving the user experience.

[0051] Optionally, a second welding groove 810 is formed on the welding end 800. The second welding groove 810 is used to place the conductor of the cable to limit the conductor of the cable, so as to facilitate the staff to quickly and accurately weld the conductor of the cable to the welding end 800, thereby improving the production efficiency and product yield.

[0052] Furthermore, a second potting part 600 is further provided on one side of the male terminal 20 close to the welding end 800. The second potting part 600 can be a potting groove or a potting flange, which is used for snap-fitting with the male seat 40, so that the male terminal 20 can be stably installed on the male seat 40.

[0053] As Figure 7 shown, a second clamping groove 700 is formed in the holding section 212 of the insertion part 200, and a second clamping part 900 adapted to the second clamping groove 700 is formed on the insertion end 500. The second clamping groove 700 is arranged circumferentially on the inner wall of the holding section 212, and the second clamping part 900 is a convex ring and is arranged circumferentially on the outer wall of the insertion end 500. The cooperation between the second clamping groove 700 and the second clamping part 900 can further prevent the insertion end 500 from sliding out of the holding section 212.

[0054] Compared with the prior art, the female terminal 10 provided in the present application can ensure that there is no risk of the insertion part 200 falling off by connecting the insertion part 200 and the connection part 100; and since a transition section 211 is provided on the insertion part 200 to provide guidance for the insertion of the male terminal 20, facilitating the connection between the male terminal 20 and the female terminal 10; in addition, by providing a wrapping body outside the insertion part 200, when the insertion part 200 deforms outward, the wrapping body can apply an inward pressure to it, eliminating the risk of permanent deformation of the insertion part 200; it can ensure a tight connection between the male terminal 20 and the female terminal 10, and further improve the service life of the male terminal 20 and the female terminal 10.

[0055] The above are only some embodiments of the present application, and thus do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall similarly be included in the patent protection scope of the present application.

Claims

1. A female terminal for a connector, characterized in that: include: A connecting portion, one end of which is formed with a welding portion; The plug-in portion is connected to one end of the connecting portion away from the welding portion; the plug-in portion is cylindrical with a uniform outer diameter; a plug-in space for accommodating a male terminal is formed in the plug-in portion; the plug-in space is composed of a transition section and a retaining section; the inner diameter of the transition section gradually decreases; when connected with the male terminal, the male terminal enters the retaining section through the transition section; at least one slot is also formed on the plug-in portion; And, a covering piece sleeved on the plug-in portion.

2. The female terminal according to claim 1, characterized in that: The covering member is cylindrical, and the inner diameter of the covering member at one end close to the connecting portion is larger than the outer diameter of the plug-in portion; the inner diameter of the covering member gradually decreases from one end close to the connecting portion to the other end away from the connecting portion.

3. The female terminal according to claim 1, characterized in that: An accommodating space is formed in the covering member, and the plug-in portion is accommodated in the accommodating space; the covering member is provided with an annular stopper at the end away from one end of the connecting portion, and the diameter of the through hole provided by the stopper is greater than or equal to the maximum inner diameter of the transition section.

4. The female terminal according to claim 3, characterized in that: In the installed state, the end of the plug-in portion away from one end of the connecting portion abuts against the stop portion.

5. The female terminal according to claim 3, characterized in that: A first clamping groove is formed in the accommodating space, and a first clamping portion adapted to the first clamping groove is formed on the plug-in portion.

6. The female terminal according to claim 1, characterized in that: A first sealing portion is formed on one end of the connecting portion close to the plug-in portion; and a first welding groove is formed on the welding portion.

7. A terminal assembly, characterized in that: It comprises a male terminal and a female terminal as described in any one of claims 1 to 6; when the male terminal is inserted into the plug-in portion, the plug-in portion is slightly deformed and clamps the male terminal.

8. The terminal assembly according to claim 7, characterized in that: The male terminal comprises a plug-in end and a welding end, and a second welding groove is provided on the welding end; the end of the plug-in end is hemispherical; and a second sealing portion is also provided on the male terminal.

9. The terminal assembly according to claim 8, characterized in that: A second clamping groove is formed in the plug-in portion, and a second clamping portion adapted to the second clamping groove is formed on the plug-in end.

10. A connector, characterized in that: It comprises a female seat, a male seat and at least two terminal assemblies as described in any one of claims 7 to 9, wherein the female seat is adapted to the male seat, the female terminal is installed on the female seat, and the male terminal is installed on the male seat.

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