WO2024094013A1 - Terminal - Google Patents

Abstract

A terminal (2), comprising: an inserting portion (21), a fixed portion (22) connected to the inserting portion (21), and a crimping portion (23) connected to the fixed portion (22). The inserting portion (21) is configured to match and connect to a mating terminal; the crimping portion (23) is configured to crimp a conductor; the crimping portion (23) comprises a crimping body (231), and a first crimping piece (232) and a second crimping piece (233) respectively extending from two sides of the crimping body (231); the first crimping piece (232) and the second crimping piece (233) are provided with embedding structures that are engaged with each other in a crimping state. The terminal (2) is formed by stamping and crimping, without an assembly step in the manufacturing process, thus reducing the difficulty and the production cost, effectively improving the production efficiency, and ensuring the coaxiality of the inserting portion and the fixed portion.

Description

Terminals

Related Applications

This application claims priority to Chinese patent application No. 202222879760.7 filed on October 31, 2022, and cites the contents disclosed in the above patent application as part of this application.

Technical Field

The present application relates to the field of electrical connection, and in particular to a terminal.

Background technique

Connectors are a component that electronic engineers often come into contact with. Their function is to build a bridge of communication between blocked or isolated circuits in a circuit, so that current can flow and the circuit can achieve its intended function. Connectors are an indispensable component in electronic equipment. Their forms and structures are ever-changing. They can be found in everything from airplanes and ships to remote-controlled toys. There are various forms of connectors depending on the application object, frequency, power, application environment, etc.

HSD connector is High Speed Data connector, that is, a high-speed transmission connector. It is required in handheld products such as mobile phones, digital cameras, MP3 players, personal digital assistants (PDA) and automobiles. HSD connector is a symmetrical data transmission connector based on the four-core principle, with impedance controlled at about 100Ω. HSD connector is the most important auxiliary connector in automotive video, which is related to the integrity and efficiency of the video. Among them, the terminal is the most important part of the connector. The terminal plays the role of a bridge, allowing the electronic components to be closely combined to conduct the circuit. At present, the center terminal of the HSD connector has a complex structure and the coaxiality is not easy to guarantee. At the same time, the existing B-type crimping consumes more materials. Therefore, it is necessary to provide a new terminal solution to solve the above problems.

Summary of the invention

One object of the present application is to provide a terminal with a simple structure, good coaxiality and material saving.

A terminal comprises: an inserting portion, a fixing portion connected to the inserting portion, and a crimping portion connected to the fixing portion, wherein the inserting portion is used for matching and connecting with a plug-in terminal, the crimping portion is used for crimping a conductor, the crimping portion comprises a crimping body, a first crimping piece and a second crimping piece extending from both sides of the crimping body respectively, and an inlay structure which cooperates with each other in the crimping state is arranged between the first crimping piece and the second crimping piece.

Thus, by providing the plug-in portion, the fixing portion and the crimping portion, the overall structure of the terminal is simplified, and the first crimping piece and the second crimping piece are provided. The crimping piece holds the conductor in place.

In one embodiment, the embedded structure includes a protrusion disposed on one of the first crimping piece and the second crimping piece, and a groove disposed on the other of the first crimping piece and the second crimping piece, and the protrusion and the groove are embedded in each other in the crimping state.

Therefore, by setting the protrusions and grooves on the first crimping piece and the second crimping piece, it is ensured that the conductor can be embedded and fixed, while avoiding the copper wire being exposed due to excessive gap, and more materials are saved than B-type crimping.

In one embodiment, the open cavity formed by connecting the crimping body, the first crimping piece, and the second crimping piece matches the outer surface of the conductor.

Thus, the open cavity matches the outer surface of the conductor, so that when the conductor is placed on the open cavity for crimping, the tightness between the conductor and the crimping portion is ensured.

In one embodiment, the top edges of the first crimping piece and the second crimping piece are in contact with each other in a state where the protrusion and the groove are engaged with each other to cover the conductor.

Therefore, when the projection and the groove are engaged with each other, it is ensured that the conductor can be wrapped.

In one embodiment, the inner peripheral wall of the open cavity is further formed with annular grooves spaced apart in the axial direction, and the annular grooves are in mating contact with the outer surface of the conductor.

Thus, by providing annular grooves at intervals on the inner peripheral wall of the open cavity, better fixation of the conductor is ensured.

In one embodiment, a first transition portion is further included, and the plug-in portion is connected to the fixing portion via the first transition portion.

Therefore, by setting the first transition portion, the inserting portion and the fixing portion can be smoothly transitioned, and the first transition portion also serves as a stop.

In one embodiment, the plug-in portion and the fixing portion are cylindrical, a first diameter of the plug-in portion is smaller than a second diameter of the fixing portion, and the plug-in portion is connected to the fixing portion via a first transition portion in the shape of a cone.

Therefore, the plug-in portion and the fixing portion are cylindrical, the structure is simple, and by limiting the shape of the first transition portion, a smooth transition between the plug-in portion and the fixing portion is ensured.

In one embodiment, a second transition portion is further included, and the fixing portion is connected to the crimping portion via the second transition portion.

Thus, by providing the second transition portion, a smooth transition is achieved between the fixing portion and the crimping portion.

In one embodiment, the second transition portion is an open section extending from the front end of the crimping body, and a top edge of the open section is lower than a top edge of the first crimping piece and/or the second crimping piece.

Therefore, by setting the specific shape of the second transition portion, the processability of the connection between the crimping portion 23 and the fixing portion 22 is ensured.

In one embodiment, a third transition portion is further connected between the fixed portion and the open section. The third transition portion is cylindrical, and a third diameter of the third transition portion is larger than the first diameter and smaller than the second diameter.

Therefore, by providing the third transition portion, the processing properties of the terminal are ensured.

In one embodiment, the plug-in portion and the fixing portion are formed by stamping and curling a plate material.

Therefore, there is no assembly step in the production process after stamping and curling, which reduces the difficulty and production cost, can effectively improve production efficiency, enhance market competitiveness, and at the same time ensure the coaxiality of the plug-in part and the fixed part.

In one embodiment, the inserting portion and the fixing portion are hollow structures.

Thus, the plug-in portion and the fixed internal structure are determined, and the structure is simple.

This application has the following beneficial effects:

1. The plug-in part and the fixed part of the terminal of the present application are formed by stamping and curling. There is no assembly step in the production process, which reduces the difficulty and production cost, can effectively improve production efficiency, enhance market competitiveness, and at the same time ensure the coaxiality of the plug-in part and the fixed part.

2. The crimping portion of the terminal of the present application adopts circular crimping, which ensures the overall concentricity of the terminal, reduces impedance, and reduces material compared to B-type crimping.

The first crimping piece and the second crimping piece of the terminal of the present application are provided with protrusions and grooves, and the protrusions and grooves have a good fit when they are fitted together, thereby preventing the copper wire from being exposed due to an excessive gap.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is an assembly diagram of the terminal and the insulator of the present application.

FIG. 2 is a schematic diagram of the structure of the terminal of the present application.

The following are marked in the figure:
1-insulator, 11-cavity, 2-terminal, 21-plug-in part, 22-fixing part,
23-crimping part, 231-crimping body, 232-first crimping piece, 233-second crimping piece,
234-protrusion, 235-groove, 236-annular groove, 24-first transition portion,
25 - second transition section, 26 - third transition section.

Detailed ways

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

Technologies, methods, and equipment known to those skilled in the art may not be discussed in detail, but are described in detail where appropriate. The techniques, methods and devices described herein shall be deemed as part of the specification.

In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

As shown in Figures 1 and 2, a terminal 2 includes: a plug-in portion 21, a fixed portion 22 connected to the plug-in portion 21, and a crimping portion 23 connected to the fixed portion 22. The plug-in portion 21 is used to match and connect with the plug-in terminal, and the crimping portion 23 is used to crimp the conductor. The crimping portion 23 includes a crimping body, a first crimping piece and a second crimping piece extending from both sides of the crimping body respectively, and an embedded structure that cooperates with each other in the crimping state is arranged between the first crimping piece and the second crimping piece.

Specifically, the insulator 1 has a cavity for accommodating the terminal 2, the cavity has an entrance and an exit, the terminal 2 is accommodated in the insulator 1, the plug-in portion 21 extends out of the insulator 1 through the exit at one end of the insulator 1, and the plug-in portion 21 is used to match and connect with the terminal on the opposite side; the cavity of the insulator 1 is also provided with a cavity 11 for fixing the terminal, the fixing portion 22 is fixed in the cavity 11, a gap is left between the outer contour of the fixing portion 22 and the inner contour of the cavity 11, one end of the fixing portion 22 is connected to the plug-in portion 21, and the other end is connected to the crimping portion 23; the crimping portion 23 includes a crimping body 231, a first crimping piece 232 and a second crimping piece 233, and the first crimping piece 232 and the second crimping piece 233 are respectively extended from both sides of the crimping body 231. Thus, by providing the plug-in portion 21, the fixing portion 22 and the crimping portion 23, the overall structure of the terminal is simple, and the conductor is fixed by the first crimping piece 232 and the second crimping piece 233.

In this embodiment, the material of the terminal can be tin bronze, which has the following advantages: (1) copper alloy has excellent physical and chemical properties, and pure copper has excellent electrical conductivity, thermal conductivity and thermal conductivity. (2) good processing performance, good plasticity, convenient cold and hot forming, and good casting performance of cast copper alloy. (3) excellent anti-friction, elasticity and fatigue resistance.

After the terminal is formed, the terminal surface is first nickel-plated with a coating specification of 2um min. After the entire terminal is nickel-plated, the plug-in part 21 is gold-plated and the crimping part 23 is tin-plated. The gold-plated layer specification is 0.38um min and the tin-plated layer specification is 1um min.

The plug-in portion 21 is gold-plated to ensure that the plug-in portion 21 has better conductivity; the crimping portion 23 is tin-plated to ensure better crimping.

As shown in FIG. 2 , the embedded structure includes a protrusion 234 disposed on one of the first crimping piece 232 and the second crimping piece 233 , and a groove 235 disposed on the other of the first crimping piece 232 and the second crimping piece 233 . The protrusion 234 and the groove 235 are interlocked in the crimping state.

Specifically, the inlay structure includes a protrusion 234 and a groove 235;

In this embodiment, the protrusion 234 is arranged on the first crimping piece 232, and the groove 235 is arranged on the second crimping piece 233; the protrusion 234 is tooth-shaped, and the groove 235 is a tooth-shaped groove matching it. When the first crimping piece 232 and the second crimping piece 233 are crimped inwardly in a circular manner, the outer surfaces of the protrusion 234 and the groove 235 contact each other to form an interlocking state.

In other embodiments, the shape of the protrusion 234 can be any shape with two inclined sides, such as a triangle, a trapezoid, etc.

Therefore, by setting the projections and grooves with beveled edges on the first crimping piece and the second crimping piece, it is ensured that the conductor can be embedded and fixed, while avoiding the copper wire being exposed due to excessive gap, and more materials are saved than B-type crimping.

In another embodiment, the protrusion 234 is disposed on the second crimping piece 233 , and the groove 235 is disposed on the first crimping piece 232 .

In one embodiment, the open cavity formed by the crimping body 231 , the first crimping piece 232 , and the second crimping piece 233 matches the outer surface of the conductor.

Specifically, the conductor is placed on an open cavity. The open cavity means that the crimping body 231, the first crimping piece 232 and the second crimping piece 233 are non-closed along the circumferential direction, and a gap is provided in the middle. In order to ensure the tightness after crimping, the open cavity is arranged to match the outer surface of the conductor.

In one embodiment, the top edges of the first crimping piece 232 and the second crimping piece 233 are in contact with each other in a state where the protrusion 234 and the groove 235 are engaged with each other to cover the conductor.

In this embodiment, the crimping body 231, the first crimping piece 232 and the second crimping piece 233 are crimped in a circular manner to crimp the crimping part 23 into a circular central control cavity. The protrusion 234 of the first crimping piece 232 and the groove 235 of the second crimping piece 233 are interlocked to wrap the conductor in the hollow cavity of the crimping part 23.

In one embodiment, the inner peripheral wall of the open cavity is further formed with annular grooves 236 spaced apart in the axial direction, and the annular grooves 236 are in mating contact with the outer surface of the conductor.

Specifically, in order to ensure that the conductor is firmly crimped in the central control cavity of the crimping part 23, annular grooves 236 are also arranged at intervals on the inner wall of the open cavity. When the conductor is crimped with the first crimping piece 232 and the second crimping piece 233, the outer periphery of the conductor is crimped into the annular groove 236 through crimping deformation, so that the conductor can fit tightly in the crimping part 23, and the crimping resistance and anti-bending ability are better.

In one embodiment, a first transition portion 24 is further included, and the plug-in portion 21 is connected to the fixing portion 22 via the first transition portion 24 .

Specifically, in order to ensure a smooth transition between the first transition portion 24 and the fixed portion 22, in this embodiment, the first transition portion 24 is used to connect the first transition portion 24 and the fixed portion 22. At the same time, the first transition portion 24 cooperates with the conical surface of the cavity 11 to serve as a front stop.

In one embodiment, the plug-in portion 21 and the fixing portion 22 are cylindrical, a first diameter of the plug-in portion 21 is smaller than a second diameter of the fixing portion 22 , and the plug-in portion 21 is connected to the fixing portion via a conical first transition portion 24 .

Specifically, based on the assembly considerations of the terminal 2, the terminal 2 can be more conveniently installed in the insulator 1, and the plug-in portion 21 and the fixing portion 22 of the terminal 2 are designed to be cylindrical. The cylindrical shape is simple to process and saves more materials than type B crimping.

In this embodiment, the diameter of the fixing portion 22 is designed to be larger than the diameter of the plug-in portion 21, which can ensure the convenience of installation of the terminal 2. At the same time, the first transition portion 24 is designed to have a diameter smaller than the diameter of the end connected to the plug-in portion 21 than the diameter of the end connected to the fixing portion 22. That is to say, the diameter of the first transition portion 24 gradually increases along the direction from the plug-in portion 21 to the fixing portion 22, that is, the shape of the plug-in portion 21 is conical; this allows a smooth transition between the plug-in portion 21 and the fixing portion 22, and at the same time, the conical surface serves as a limit.

In one embodiment, a second transition portion 25 is further included, and the fixing portion 22 is connected to the crimping portion 23 via the second transition portion 25 .

In this embodiment, the terminal 2 is also provided with a second transition portion 25 connecting the fixed portion 22 and the crimping portion 23. By providing the second transition portion 25, a smooth transition is achieved between the fixed portion 22 and the crimping portion 23, while avoiding the stress caused by the direct connection between the crimping portion 23 and the fixed portion 22, thereby extending the service life of the terminal and ensuring that the crimping portion 23 and the conductor can be better crimped into shape.

In one embodiment, the second transition portion 25 is an open section extending from the front end of the crimping body 231 (the second transition portion 25 is an open section extending from the crimping body 231 in a direction away from the fixing portion 22), and the top edge of the open section is lower than the top edge of the first crimping piece 232 and/or the second crimping piece 233.

In this embodiment, the second transition portion 25 is an open section extending from the front end of the crimping body 231 (the second transition portion 25 is an open section extending from the crimping body 231 in a direction away from the fixing portion 22). In order to ensure the processability of the connection between the crimping portion 23 and the fixing portion 22, the top edge of the open section is designed to be lower than the top edge of the first crimping piece 232 and/or the second crimping piece 233.

In one embodiment, a third transition portion 26 is connected between the fixed portion 22 and the open section. The third transition portion 26 is cylindrical, and a third diameter of the third transition portion 26 is greater than the first diameter and smaller than the second diameter.

In this embodiment, in order to ensure the processability of the terminal 2, a third transition portion 26 is provided between the fixed portion 22 and the open section to connect the fixed portion 22 and the second transition portion 25, so as to avoid excessive stress caused by the direct connection between the second transition portion 25 and the fixed portion 22, which would cause the crimping portion 23 and the fixed portion 22 to break when the terminal 2 is in use. Therefore, the diameter of the third transition portion 26 is set to be larger than the first diameter of the plug-in portion 21 and smaller than the second diameter of the fixed portion 22. At the same time, the third transition portion 26 also serves as a rear stop limit.

In one embodiment, the inserting portion 21 and the fixing portion 22 are formed by stamping and curling a plate material.

In this embodiment, the plug-in portion 21 and the fixing portion 22 are made of 2 mm thick tin bronze plate by stamping and curling. There is no assembly step in the production process, which reduces the difficulty and production cost, effectively improves production efficiency, and enhances market competitiveness.

Specifically, the cross-sectional shapes of the plug-in portion 21 and the fixing portion 22 are circular, and the plug-in portion 21 and the fixing portion 22 are coaxially connected via the first transition portion 24 .

Advantages of stamping curling:

(1) The dimensional accuracy is guaranteed by the mold, so the processed parts have stable quality and good consistency, and have the characteristic of being "exactly the same".

(2) Stamping can produce parts with thin walls, light weight, good rigidity, high surface quality and complex shapes;

(3) High material utilization rate, less or no chip processing;

(4) High efficiency, easy operation, and low technical level of workers required;

(5) The mold has a long service life and low production cost.

In one embodiment, the inserting portion 21 and the fixing portion 22 are hollow structures.

In this embodiment, the plug-in portion 21 and the fixing portion 22 are designed to be hollow structures, so that the terminal 2 is lighter and material is saved.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims (12)

A terminal, characterized in that it includes: a plug-in portion, a fixed portion connected to the plug-in portion, and a crimping portion connected to the fixed portion, the plug-in portion is used to match and connect with a plug-in terminal, the crimping portion is used to crimp a conductor, the crimping portion includes a crimping body, a first crimping piece and a second crimping piece extending from both sides of the crimping body respectively, and an embedded structure that cooperates with each other in the crimping state is arranged between the first crimping piece and the second crimping piece. The terminal according to claim 1 is characterized in that the embedded structure includes a protrusion arranged on one of the first crimping piece and the second crimping piece, and a groove arranged on the other of the first crimping piece and the second crimping piece, and the protrusion and the groove are embedded in each other in the crimping state. The terminal according to claim 2 is characterized in that an open cavity formed by connecting the crimping body, the first crimping piece, and the second crimping piece matches the outer surface of the conductor. The terminal according to claim 3 is characterized in that the top edges of the first crimping piece and the second crimping piece are in contact with each other to cover the conductor when the protrusion and the groove are engaged with each other. The terminal according to claim 3 is characterized in that the inner peripheral wall of the open cavity is further formed with annular grooves arranged at intervals in the axial direction, and the annular grooves are in mating contact with the outer surface of the conductor. The terminal according to claim 1 is characterized in that it also includes a first transition portion, and the plug-in portion is connected to the fixed portion via the first transition portion. The terminal according to claim 6 is characterized in that the plug-in portion and the fixing portion are cylindrical, the first diameter of the plug-in portion is smaller than the second diameter of the fixing portion, and the plug-in portion is connected to the fixing portion via the first transition portion in the shape of a cone. The terminal according to claim 7 is characterized in that it also includes a second transition portion, and the fixing portion is connected to the crimping portion via the second transition portion. The terminal according to claim 8 is characterized in that the second transition portion is an open section extending from the front end of the crimping body, and the top edge of the open section is lower than the top edge of the first crimping piece and/or the second crimping piece. The terminal according to claim 9 is characterized in that a third transition portion is further connected between the fixed portion and the open section, the third transition portion is cylindrical, and a third diameter of the third transition portion is larger than the first diameter and smaller than the second diameter. The terminal according to claim 7 is characterized in that the plug-in portion and the fixing portion are formed by stamping and curling a sheet material. The terminal according to claim 11 is characterized in that the plug-in portion and the fixing portion are hollow structures.