Female terminal, connector, and processing technique for female terminal

Abstract

The application discloses a female terminal, a connector and a processing technology of the female terminal. An insulator is arranged between a first conductor and a second conductor of the female terminal, the insulator connects the first conductor and the second conductor, and the outer side edges of the first conductor and the second conductor are curled and bent towards a surface of a base material to form a counter-plugging part for counter-plugging with a male terminal. Meanwhile, a first pressure-welding part is arranged at one end of the first conductor, and a second pressure-welding part is arranged at one end of the second conductor close to the first pressure-welding part. Two wires can be arranged outside, one of the wires can be pressure-welded with the first pressure-welding part, and the other wire can be pressure-welded with the second pressure-welding part, the first pressure-welding part and the second pressure-welding part are oppositely arranged and not conductive. Thus, the first conductor and the second conductor of the female terminal can maintain a certain structural strength through the connection of the insulator, the female terminal can be maintained in a smaller size under the condition of ensuring a lower impedance, and the female terminal can be adapted to a smaller installation space terminal.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of connectors, in particular to a female terminal, a connector and a processing technology of the female terminal. BACKGROUND

[0002] Terminals are generally used in wiring harnesses, and are generally used for connection between electronic modules or electronic devices, and are particularly used in the fields of automobiles, aerospace, home appliances, etc. The existing connector has several separate terminals arranged in the external shell, which are used for connection with external signal lines and power lines. Since the terminals are independent of each other, even by arranging a partition plate in the terminal sleeve, the terminals are installed on both sides of the partition plate to achieve partition, thereby avoiding short circuit and other failure conditions. As a result, the external size of the connector is relatively large, which is not suitable for narrow installation space. SUMMARY

[0003] The main purpose of the present application is to provide a female terminal, a connector and a processing technology of the female terminal, which aims to solve the problem of large external size of the connector in the prior art, which is not suitable for narrow assembly space.

[0004] To achieve the above-mentioned purpose, the present application provides a processing technology of a female terminal, comprising the following steps:

[0005] Punching the base material to form a long hole on the surface, and forming a first conductor and a second conductor on the left and right sides of the long hole;

[0006] Placing the base material in an injection mold for injection treatment, filling the long hole with plastic material to form an insulator, and obtaining a semi-finished product;

[0007] Forming a first crimping part at one end of the first conductor, and forming a second crimping part at one end of the second conductor close to the first crimping part;

[0008] Punching the semi-finished product in a punching die, cutting both ends of the long hole, and insulating the first conductor and the second conductor;

[0009] Punching and curling the outer side edges of the first conductor and the second conductor towards the same side of the base material to form a plug-in part.

[0010] In an embodiment, the step of punching the base material to form a long hole on the surface further comprises:

[0011] The long side of the long hole is a sawtooth edge, and one of the adjacent teeth on the sawtooth edge is folded towards the upper surface of the base material, and the other tooth is folded towards the lower surface of the base material.

[0012] In an embodiment, the step of forming a first crimping part at one end of the first conductor comprises:

[0013] The first conductor is cut and punched at one end to form a pair of first fins and a pair of second fins for connecting with the wire.

[0014] In an embodiment, the step of forming the second crimping part at one end of the second conductor close to the first crimping part comprises:

[0015] The second conductor is cut and punched at one end to form a pair of third fins and a pair of fourth fins for connecting with the wire.

[0016] In an embodiment, the step of punching and curling the outer side edges of the first conductor and the second conductor towards the same side of the base material to form the insertion part further comprises:

[0017] The semi-finished product is moved a certain distance along the length direction so that the female terminal after the punching forming is moved out of the punching die;

[0018] The part of the semi-finished product in the punching die is subjected to the next round of punching forming to form another female terminal.

[0019] The application further provides a female terminal comprising:

[0020] The first conductor is provided with a first sawtooth edge on one side edge along the length direction;

[0021] The second conductor is provided side by side with the first conductor, and the second conductor is provided with a second sawtooth edge on one side edge along the length direction, the second sawtooth edge being provided opposite to the first sawtooth edge;

[0022] An insulator is provided between the first conductor and the second conductor and connected with the first sawtooth edge and the second sawtooth edge respectively;

[0023] A first crimping part is provided at one end of the first conductor;

[0024] A second crimping part is provided at one end of the second conductor close to the first crimping part, and the first crimping part is provided opposite to the second crimping part;

[0025] The side edge of the first conductor away from the first sawtooth edge and the side edge of the second conductor away from the second sawtooth edge are curled and folded towards the upper surface of the first conductor and the second conductor to form an insertion part.

[0026] In an embodiment, on the first sawtooth edge and the second sawtooth edge, one of the adjacent teeth is folded towards the upper surface of the first conductor and the second conductor, and the other tooth is folded towards the lower surface of the first conductor and the second conductor.

[0027] In an embodiment, the first crimping part comprises a pair of first fins and a pair of second fins for connecting with the wire.

[0028] In an embodiment, the second crimping portion includes a pair of third fins and a pair of fourth fins for connecting with the wires.

[0029] The application also provides a connector, which comprises the female terminal and a connector sleeve matched with the female terminal.

[0030] The application provides the female terminal, the first conductor and the second conductor of which are arranged side by side, the insulator is arranged between the first conductor and the second conductor of the female terminal, the insulator connects the first conductor and the second conductor, the outer side edges of the first conductor and the second conductor are curled and bent towards the surface of the base material to form the counter-plugging portion of the male terminal. Meanwhile, the first crimping portion is arranged at one end of the first conductor, and the second crimping portion is arranged at one end of the second conductor close to the first crimping portion. Two wires can be arranged outside, one of which can be crimped with the first crimping portion, and the other can be crimped with the second crimping portion, the first crimping portion and the second crimping portion are arranged oppositely and are not conductive. Thus, the first conductor and the second conductor of the female terminal can maintain a certain structural strength through the connection of the insulator, and the female terminal can be maintained in a smaller volume to adapt to a smaller installation space terminal while ensuring a lower impedance. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0032] Figure 1 The structure diagram of the base material in an embodiment of the present application;

[0033] Figure 2 The structure diagram of the semi-finished product in an embodiment of the present application;

[0034] Figure 3 The structure diagram of the semi-finished product in another embodiment of the present application;

[0035] Figure 4 The structure diagram of the female terminal in another embodiment of the present application;

[0036] Figure 5 The structure diagram of the female terminal in another embodiment of the present application.

[0037] Explanation of reference signs:

[0038] Reference Name Reference Name 10 Substrate 13 First crimp portion 10a Long hole 13a First fin 10b Counter plug portion 13b Second fin 11 First conductor 14 Second crimp portion 11a First sawtooth edge 14a Third fin 12 Second conductor 14b Fourth fin 12a Second sawtooth edge 15 Insulator

[0039] The objectives, functional features and advantages of the present application will be further illustrated in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0041] It should be noted that if the embodiments of the present application involve directional indications, such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative positional relationship between the components, the movement condition, etc. in a certain specific posture, as shown in the drawings. If the specific posture changes, the directional indications also change accordingly.

[0042] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0043] The present application provides a female terminal processing process, referring to Figures 1 to 5 , specifically comprising the following steps:

[0044] The substrate 10 is punched to form a long hole 10a on the surface thereof, and the first conductor 11 and the second conductor 12 are formed on the left and right sides of the long hole 10a; in this step, the substrate 10 is arranged in a roll, one end of which is fixed on a material cylinder, and the other end is fixed on a material winding roller of a material winding motor, and the substrate 10 is tensioned by a material tensioning mechanism. The substrate 10 is made of copper or copper alloy, and a long hole 10a is cut from the middle of the substrate 10 by a first punching die during the winding process. The first conductor 11 and the second conductor 12 are formed on the left and right sides of the long hole 10a in the width direction of the long hole 10a, and corresponding cutting blades are arranged on the moving die of the punching die. The blade line of the cutting blade is serrated, so that the first serrated edge 11a and the second serrated edge 12a are respectively formed on the opposite edges of the first conductor 11 and the second conductor 12.

[0045] The substrate 10 is placed in an injection mold for injection treatment, and the long hole 10a is filled with plastic material to form an insulator, so as to obtain a semi-finished product; in this step, the injection mold is arranged on one side of the first punching roller, the cut substrate 10 continues to be transmitted and enters the injection mold, and the long hole 10a between the first conductor 11 and the second conductor 12 is injection molded to form an insulating layer.

[0046] A first crimping portion 13 is formed at one end of the first conductor 11, and a second crimping portion 14 is formed at one end of the second conductor 12 close to the first crimping portion 13; in this step, the first punching die, the injection mold and the second punching die are arranged in sequence along the transmission direction of the substrate 10, the substrate 10 after injection can be used as a semi-finished product of a female terminal, and then enters the second punching die to punch out a crimping fin for crimping an external wire.

[0047] The semi-finished product is placed in a punching die for punching, and the two ends of the long hole 10a are cut to insulate the first conductor 12 and the second conductor 13; in this step, the second punching die cuts the portions at the two ends of the long hole 10a in the substrate 10, so that the portions connecting the first conductor 12 and the second conductor 13 are removed, so that the first conductor 12 and the second conductor 13 are connected only by the insulator 15, and are arranged opposite to each other and not conductive.

[0048] The outer sides of the first conductor 11 and the second conductor 12 are punched and curled toward the same side of the substrate 10 to form a plug-in portion 10b. In this embodiment, the outer sides of the first conductor 11 and the second conductor 12 can be folded inward in the second punching die, so that the male terminal can be inserted into the female terminal and clamped by the plug-in portions 10b on both sides to realize butt connection conduction.

[0049] The application forms the first conductor 11 and the second conductor 12 with a certain spacing by cutting the substrate 10 into two halves, and performs injection molding between the first conductor 11 and the second conductor 12, so that the plastic fills the gap between the first conductor 11 and the second conductor 12, and realizes the physical connection and electrical insulation of the first conductor 11 and the second conductor 12. Then, the first crimping part 13 and the second crimping part 14 which are crimped with the external wires are formed by the stamping die; the first conductor 11 and the second conductor 12 of the female terminal are connected by the insulator 15, so that a certain structural strength can be maintained, the female terminal is maintained in a small volume under the condition of ensuring low impedance, the miniaturization of the connector is realized, and the smaller installation space is adapted. At the same time, compared with the existing terminal and connector, the assembly is more convenient, and the conduction between two strip lines can be realized by assembling only one terminal. Similarly, the substrate 10 can be cut into three or more strips in parallel, and the conduction of three or more lines can be realized, and the assembly is also only one terminal.

[0050] In an embodiment, referring to Figures 1 to 5 , the step of stamping the substrate 10 to form a long hole 10a on the surface of the substrate 10 further includes: the long side of the long hole 10a is a sawtooth edge, and one of the adjacent teeth on the sawtooth edge is folded towards the upper surface of the substrate, and the other tooth is folded towards the lower surface of the substrate. In this step, the cut edge of the first conductor 11 after cutting is the first sawtooth edge 11a, and the cut edge of the second conductor 12 after cutting is the second sawtooth edge 12a. This embodiment can also be provided with a staggered tooth mechanism between the first stamping die and the injection molding die, the staggered tooth mechanism includes a first rack arranged on the upper surface of the substrate 10 and a second rack arranged on the lower surface of the substrate 10, the tooth pitch of the first rack and the second rack is related to the second tooth pitch of the first sawtooth edge 11a and the second sawtooth edge 12a, and specifically, the value of the first tooth pitch is twice the value of the second tooth pitch. During the transmission process of the substrate 10, the first rack and the second rack move along the normal direction of the substrate 10, the tooth top of the first rack is opposite to the tooth root of the second rack, and the teeth of the two are folded towards the substrate 10, so that the tooth spacing of the first sawtooth edge 11a is staggered, and correspondingly, the tooth spacing of the second sawtooth edge 12a is also staggered. That is, among the adjacent teeth, one of them is folded towards the lower surface of the substrate 10, and the other is not folded or folded towards the upper surface of the substrate 10. Thus, the contact area of the insulator 15 with the first conductor 11 and the second conductor 12 can be increased, the connection strength of the insulator 15 with the first conductor 11 and the second conductor 12 can be ensured, and the cracking of the connection part of the insulator 15 with the first conductor 11 and the second conductor 12 in the subsequent stamping process can be avoided.

[0051] In an embodiment, referring to Figures 1 to 5 , the step of forming the first crimping part 13 at one end of the first conductor 11 includes:

[0052] The first conductor 11 is cut and punched at one end to form a pair of first fins 13a for connecting with the first conductive core of the first wire, and a pair of second fins 13b for connecting with the first insulating layer of the first wire. In this step, the cutting assembly of the punching die cuts the outer edge of the first conductor 11 by a certain width. At the same time, a material allowance of the first fin 13a and the second fin 13b is reserved. Then the bending assembly bends the material allowance towards one side of the first conductor 11 to form the first fin 13a and the second fin 13b respectively.

[0053] In an embodiment, referring to Figures 1 to 5 , the step of forming the second crimping part 14 at one end of the second conductor 12 close to the first crimping part 13 comprises:

[0054] The second conductor 12 is cut and punched at one end to form a pair of third fins 14a for connecting with the second conductive core of the second wire, and a pair of fourth fins 14b for connecting with the second insulating layer of the second wire. In this step, the cutting assembly of the punching die cuts the outer edge of the second conductor 12 by a certain width. At the same time, a material allowance of the third fin 14a and the fourth fin 14b is reserved. Then the bending assembly bends the material allowance towards one side of the second conductor 12 to form the third fin 14a and the fourth fin 14b respectively.

[0055] In an embodiment, referring to Figures 1 to 5 , the step of punching and curling the outer side of the first conductor 11 and the second conductor 12 towards the same side of the base material 10 to form the insertion part 10b further comprises:

[0056] The semi-finished product is moved a certain distance in the length direction, so that the female terminal formed by punching is moved out of the punching die; the part of the semi-finished product in the punching die is subjected to the next round of punching forming to form another female terminal. In this step, the semi-finished product is continuously subjected to punching forming during transmission, so that the female terminals are connected in sequence, and the finished product is finally wound on the winding drum. Alternatively, the semi-finished product after forming is wound on the winding drum, and then the wound semi-finished product is continuously conveyed to the punching die in sections, and each section can be punched to form a female terminal. Finally, a continuous and wound finished product is formed.

[0057] The present application also provides a female terminal, referring to Figures 1 to 5The female terminal includes a first conductor 11, a second conductor 12, an insulator 15, a first crimping part 13 and a second crimping part 14. The first conductor 11 is provided with a first sawtooth edge 11a on one side in the length direction. The second conductor 12 is provided side by side with the first conductor 11 and is provided with a second sawtooth edge 12a on one side in the length direction, which is opposite to the first sawtooth edge 11a. The side of the first conductor 11 away from the first sawtooth edge 11a and the side of the second conductor 12 away from the second sawtooth edge 12a are crimped to form a plug-in part 10b towards the upper surface of the first conductor 11 and the second conductor 12. The insulator 15 is arranged between the first conductor 11 and the second conductor 12 and is connected to the first sawtooth edge 11a and the second sawtooth edge 12a respectively. The first crimping part 13 is arranged at one end of the first conductor 11. The second crimping part 14 is arranged at one end of the second conductor 12 close to the first crimping part 13, and the first crimping part 13 is arranged opposite to the second crimping part 14. The female terminal can be crimped with external wires through the first crimping part 13 and the second crimping part 14. One of the wires can be crimped with the first crimping part 13, and the other wire can be crimped with the second crimping part 14. The first crimping part 13 and the second crimping part 14 are arranged opposite to each other and are not conductive. Thus, the connection between the first conductor 11 and the second conductor 12 of the female terminal through the insulator 15 can maintain a certain structural strength, and the female terminal can be maintained in a small volume to adapt to a small installation space terminal while ensuring a low impedance.

[0058] In the embodiment, the first conductor 11 and the second conductor 12 are provided in a long strip shape. The first crimping part 13 includes a pair of first fins 13a for connecting to a first conductive core of a first wire and a pair of second fins 13b for connecting to a first insulating layer of the first wire. The second crimping part 14 includes a pair of third fins 14a for connecting to the first conductive core of the first wire and a pair of fourth fins 14b for connecting to the first insulating layer of the first wire. The four pairs of fins described above can be crimped through a terminal mold.

[0059] In an embodiment, with reference to Figures 1 to 5 , one of the adjacent teeth on the first sawtooth edge 11a and the second sawtooth edge 12a is folded towards the upper surface of the first conductor 11 and the second conductor 12, and the other tooth is folded towards the lower surface of the first conductor 11 and the second conductor 12. Thus, the contact area of the insulator 15 with the first conductor 11 and the second conductor 12 can be increased, the connection strength of the insulator 15 with the first conductor 11 and the second conductor 12 can be ensured, and the connection part of the insulator 15 with the first conductor 11 and the second conductor 12 can be prevented from cracking in the subsequent stamping process.

[0060] The application also provides a connector, with reference to Figures 1 to 5The connector includes a female terminal and a connector sleeve adapted to the female terminal, and the female terminal is clamped in the connector sleeve. The first conductor 11 and the second conductor 12 are stamped and formed to have protrusions for clamping the connector sleeve, and the protrusions are arranged on the side away from the sawtooth edge.

[0061] The above description is only some optional embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, which is made under the inventive concept of the present application, and based on the content of the present application and the drawings, is included in the patent protection scope of the present application.

Claims

1. A process for machining a female terminal, characterized by, The method comprises the following steps: The base material is arranged in a roll, one end of which is fixed on a barrel, and the other end is fixed on a winding roller of a winding motor, during the winding process, the first stamping die stamps the base material to form a long hole on the surface of the base material, and the left and right sides of the long hole form a first conductor and a second conductor; The cut base material continues to be transmitted and enters the injection mold, the base material is placed in the injection mold for injection treatment, the long hole is filled with plastic material to form an insulator, and a semi-finished product is obtained; The semi-finished product enters the second stamping die, a first crimping part is stamped at one end of the first conductor, and a second crimping part is stamped at one end of the second conductor close to the first crimping part; The semi-finished product is placed in the stamping die for stamping, and the two ends of the long hole are cut to insulate the first conductor and the second conductor; The outer side edges of the first conductor and the second conductor are stamped and curled towards the same side of the base material to form a plug-in part; The step of stamping and curling the outer side edges of the first conductor and the second conductor towards the same side of the base material to form a plug-in part further comprises: Moving the semi-finished product a certain distance along the length direction, so that the female terminal formed by stamping moves out of the stamping die; The next round of stamping and forming is performed on the part of the semi-finished product in the stamping die to form another female terminal; the semi-finished product is continuously stamped and formed during the transmission process, and the female terminals are sequentially connected, and the finished product is finally wound on the winding roller.

2. The process for machining a female terminal according to claim 1, characterized by, The step of stamping the base material to form a long hole on the surface of the base material further comprises: The long side of the long hole is a sawtooth edge, and one of the adjacent teeth on the sawtooth edge is folded towards the upper surface of the base material, and the other tooth is folded towards the lower surface of the base material.

3. The process for machining a female terminal according to claim 1, wherein The step of forming a first crimping part at one end of the first conductor comprises: The one end of the first conductor is cut and stamped to form a pair of first fins and a pair of second fins for connecting with the wire.

4. The process for machining a female terminal according to claim 1, wherein The step of forming a second crimping part at one end of the second conductor close to the first crimping part comprises: The one end of the second conductor is cut and stamped to form a pair of third fins and a pair of fourth fins for connecting with the wire.

5. A female terminal characterized by comprising: It comprises: The first conductor is provided with a first sawtooth edge on one side in the length direction; The second conductor is provided side by side with the first conductor, and the second conductor is provided with a second sawtooth edge on one side in the length direction, and the second sawtooth edge is provided opposite to the first sawtooth edge; The insulator is arranged between the first conductor and the second conductor and connected with the first sawtooth edge and the second sawtooth edge respectively; The first crimping part is arranged at one end of the first conductor; The second crimping part is arranged at one end of the second conductor close to the first crimping part, and the first crimping part is arranged opposite to the second crimping part; The side edges of the first conductor and the second conductor away from the first sawtooth edge and the second sawtooth edge are curled and folded towards the upper surface of the first conductor and the second conductor to form a plug-in part.

6. The female terminal according to claim 5, characterized by One of the adjacent teeth on the first sawtooth edge and the second sawtooth edge is folded towards the upper surface of the first conductor and the second conductor, and the other tooth is folded towards the lower surface of the first conductor and the second conductor.

7. The female terminal according to claim 5, characterized by The first crimping portion includes a pair of first fins and a pair of second fins for connection with a wire.

8. The female terminal according to claim 5, characterized by The second crimping portion includes a pair of third fins and a pair of fourth fins for connection with a wire.

9. A connector characterized by comprising: A female terminal according to any one of claims 5 to 8, and a terminal cover adapted to the female terminal, the female terminal being fitted in the terminal cover.

Images