CN219643152U

CN219643152U - Stamping power-on terminal

Info

Publication number: CN219643152U
Application number: CN202320936583.3U
Authority: CN
Inventors: 许军刚; 王力
Original assignee: Wuhan Dtn New Energy Technology Co ltd
Current assignee: Wuhan Dtn New Energy Technology Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-09-05
Anticipated expiration: 2033-04-24

Abstract

The utility model relates to the technical field of conductive connection, in particular to a stamping electric terminal which is of a stamping forming structure and comprises a joint section and a joint section which are sequentially connected; the front end of the joint section is provided with a joint fixing pipe; the outer wall of the connector fixing tube is provided with a plurality of uniformly encircling assembly grooves along the circumferential direction, and elastic conductive sheets inclining inwards are formed in the assembly grooves; a wiring groove is formed in the wiring section, and cable crimping wings are formed on two sides of the notch of the wiring groove. The stamping electric terminal ensures stable connection of a circuit by tightly contacting the elastic conducting piece with the connector, and the elastic conducting piece can stretch along the assembly groove when being inserted and pulled out along with the connector due to the elasticity of the elastic conducting piece, so that the mechanical strain on the elastic conducting piece is effectively reduced, and the performance and the stability of a lead are ensured.

Description

Stamping power-on terminal

Technical Field

The utility model relates to the technical field of charging sockets, in particular to a stamping electric terminal.

Background

The new energy automobile charging socket is a device for connecting a new energy automobile charging pile and is used for completing the power transmission and communication functions between the charging pile and the new energy automobile. According to different charging modes and charging protocols of the connected countries or regions, the charging sockets of the new energy automobiles are generally divided into two types: a direct current charging socket and an alternating current charging socket.

The charging receptacle is typically internally provided with a plurality of electrical terminals, such as L1, L2 and L3 mains phase terminals, PE ground terminals, N neutral terminals, CP control polarity terminals, etc. The whole electric terminal is generally composed of a connector and a contact piece, and is generally made of metal materials, and common materials include copper, aluminum, stainless steel and the like. Generally, equipment such as a numerical control machine tool and a punching machine is required for manufacturing.

For example, chinese patent No. CN 208753662U provides a connection female terminal, a charging socket and a connector, and the above-mentioned electrical connection terminal can meet the requirements of high-power and high-current power supply, but the following problems still exist in actual production and use:

the whole raw material is required to be punched, cut, molded and the like, so that the cost is relatively high;

during the use, the electric terminal and the plug can have abrasion, resulting in poor final conductivity and stability.

Disclosure of Invention

The utility model provides a stamping power-on terminal aiming at the technical problems in the prior art to solve the problems of poor conductivity and poor stability of the prior power-on terminal.

The technical scheme for solving the technical problems is as follows: the stamping electric terminal is of a stamping forming structure and comprises a joint section and a joint section which are sequentially connected; the front end of the joint section is provided with a joint fixing pipe; the outer wall of the connector fixing tube is provided with a plurality of uniformly encircling assembly grooves along the circumferential direction, and elastic conductive sheets inclining inwards are formed in the assembly grooves; a wiring groove is formed in the wiring section, and cable crimping wings are formed on two sides of the notch of the wiring groove.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the joint section rear end is formed with waterproof circle fixed pipe, waterproof circle fixed pipe outside is provided with the waterproof circle of terminal.

Further, a plurality of limit openings are formed in the outer wall of the waterproof ring fixing pipe along the circumferential direction.

Further, a plurality of locking pieces are formed outside the connector fixing tube.

Further, a terminal guide portion and a heat conduction portion are formed outside the connector fixing tube.

Further, a water outlet is also arranged below the connector fixing pipe.

Further, the front end of the elastic conductive sheet is formed with an inward bending angle.

Further, the inner wall of the connector fixing tube is also provided with a conducting plate guide boss positioned at the front side of the elastic conducting plate.

Further, a waterproof ring installation groove which is smoothly connected with the wiring groove is formed in the wiring section, and cable waterproof ring crimping wings are formed on two sides of a notch of the waterproof ring installation groove; the waterproof ring mounting groove is provided with a waterproof ring of the cable.

Further, the inner wall of the wiring groove is provided with a plurality of anti-slip bulges.

The beneficial effects of the utility model are as follows:

1) The stamping electric terminal ensures stable connection of a circuit by tightly contacting the elastic conducting piece with the connector, and the elastic conducting piece can stretch along the assembly groove when being inserted and pulled out along with the connector due to the elasticity of the elastic conducting piece, so that the mechanical strain on the elastic conducting piece is effectively reduced, and the performance and the stability of a lead are ensured.

2) According to the stamping electric terminal, the electric power supply cable is placed in the wiring groove, and the cable is fixed in a crimping manner through the cable crimping wings after being placed in the wiring groove, so that the stability of power supply is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the whole structure of another view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

FIG. 4 is a schematic view of a partial structure of a wire segment according to the present utility model;

fig. 5 is a schematic structural view of a conventional electrical terminal according to the present utility model;

fig. 6 is a schematic structural view of the press-fit electrical terminal of the present utility model assembled to a terminal holder;

FIG. 7 is a graph showing the positive pressure force value and contact resistance test data of the elastic conductive sheet of the present utility model;

fig. 8 is a schematic diagram of a terminal waterproof ring and a cable waterproof ring of the present utility model for CAE simulation.

In the drawings, the list of components represented by the various numbers is as follows:

1. 1.1 parts of connector segments, 1.2 parts of connector fixing pipes, 1.3 parts of assembly grooves, 1.3 parts of elastic conductive sheets, 1.4 parts of waterproof ring fixing pipes, 1.5 parts of terminal waterproof rings, 1.6 parts of limiting openings, 1.7 parts of locking sheets, 1.8 parts of terminal guiding parts, 1.9 parts of water draining openings, 1.10 parts of conductive sheet guiding bosses, 1.11 parts of heat conducting parts, 2 parts of wiring segments, 2.1 parts of wiring grooves, 2.2 parts of wiring grooves, cable crimping wings, 2.3 parts of waterproof ring mounting grooves, 2.4 parts of cable waterproof ring crimping wings, 2.5 parts of anti-slip bulges, 2.6 parts of cable waterproof rings.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

It should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined. The specific meaning of such terms in this patent will be understood by those of ordinary skill in the art as the case may be.

As shown in fig. 1, fig. 2 and fig. 3, the stamped electric terminal of the utility model is of a stamped structure, and mainly comprises two parts of a connecting section 1 and a wiring section 2 which are connected.

The front end of the joint section 1 is provided with a joint fixing pipe 1.1, and when the joint is placed into the inner cavity of the joint fixing pipe 1.1, a circuit can be conducted; the outer wall of the connector fixing tube 1.1 is provided with a plurality of evenly-encircling assembly grooves 1.2 along the circumferential direction, and an inwards-inclined elastic conducting strip 1.3 is formed in the assembly grooves 1.2, after the connector is placed into the connector fixing tube 1.1, the elastic conducting strip 1.3 is tightly contacted with the connector to ensure stable connection of a circuit, and as the elasticity of the elastic conducting strip 1.3 can stretch along the assembly grooves 1.2 when the connector is plugged in and pulled out, the mechanical strain of the elastic conducting strip 1.3 is effectively reduced, and the performance and stability of a lead are ensured.

The wire connecting section 2 is internally provided with a wire connecting groove 2.1, and cable crimping wings 2.2 are formed on two sides of a notch of the wire connecting groove 2.1, the wire connecting groove 2.1 is used for placing a power supply cable, and the cable is crimped and fixed through the cable crimping wings 2.2 after being placed in the power supply cable so as to ensure the stability of power supply.

The inner wall of the wiring groove 2.1 forms a plurality of anti-slip bulges 2.5, so that the cable is tightly pressed and fixed after being assembled, and the cable is prevented from falling off.

The whole punching and pressing electric terminal adopts the integral punching and forming of the sheet raw material, and compared with the traditional terminal formed by integral processing, the manufacturing cost is lower, the assembly performance is higher, and the electric conductivity is stable.

The specification of the connector fixing tube 1.1 is adjusted according to the matching of the connector terminals with different specifications in the charging socket; for example, the following corresponding power connection terminals in the fast charging seat and the slow charging seat of new energy sources can be the stamping power connection terminals designed by the utility model:

the new energy quick charging seat can adopt the interface of the punching press electric terminal to have:

a direct current power supply positive electrode interface (dc+);

a direct current power supply negative electrode interface (DC-);

a device ground interface;

charging communication CAN-H (S+);

charging communication CAN-L (S-);

charging connection confirmation interfaces (CC 1, CC 2);

a low-voltage auxiliary power supply positive electrode interface (A+);

and a negative electrode interface (A-) of the low-voltage auxiliary power supply.

The direct current power supply positive electrode interface (DC+), the direct current power supply negative electrode interface (DC-) and the equipment grounding interface in the new energy quick charging seat are required to pass through large current, and the specification of the connector and the interface is relatively higher, so that the traditional electric terminal can be adopted for avoiding overhigh temperature.

The new energy slow charging seat can adopt the interface of the punching press electric terminal to be:

a control polarity interface (CP);

a connection ground wire interface (PE);

connecting a power phase line interface (L1);

connecting a central line interface (N);

a receptacle connector interface (CC).

As an embodiment, as shown in fig. 4, a waterproof ring fixing tube 1.4 is formed at the rear end of the joint section 1, a terminal waterproof ring 1.5 is arranged outside the waterproof ring fixing tube 1.4, and the terminal waterproof ring 1.5 can be directly injection molded to the waterproof ring fixing tube 1.4 to prevent external water from directly entering the terminal rear-section cable crimping region from the front section.

Wherein, the outer wall of terminal waterproof ring 1.5 is equipped with a plurality of sealed archs along circumference, improves the sealing performance between post-assembly and the terminal fixing base of terminal.

In addition, a plurality of limiting ports 1.6 are formed in the outer wall of the waterproof ring fixing pipe 1.4 along the circumferential direction, so that the waterproof ring 1.5 of the terminal can be tightly attached to the waterproof ring fixing pipe 1.4 after injection molding, and the position of the waterproof ring 1.5 of the terminal is guaranteed.

As an implementation mode, the outside of the connector fixing tube 1.1 is provided with a plurality of locking pieces 1.7, and the locking pieces 1.7 are designed in an inverted triangle mode, so that the whole punching and pressing electric terminal can be locked after being placed in the terminal fixing seat, and the installation stability of the punching and pressing electric terminal is guaranteed.

As shown in fig. 6, after the connector fixing tube 1.1 of the press-fit electrical terminal is placed in the terminal fixing base 3, the terminal is locked by the caulking groove matched with the locking piece 1.7 in the terminal fixing base so as to prevent the terminal from retreating.

As an embodiment, the terminal guiding part 1.8 and the heat conducting part 1.11 are also formed on the outer part of the connector fixing tube 1.1, and a terminal guiding groove matched with the terminal guiding part 1.8 is preset in the terminal fixing seat so as to be matched with the terminal guiding groove through the terminal guiding part 1.8 to assemble the whole punching press electric terminal into the terminal fixing seat. The heat conducting part 1.11 can rapidly conduct the heat of the terminal to an external temperature measuring element for measurement.

In addition, a water outlet 1.9 is also arranged below the connector fixing tube 1.1, and the water outlet 1.9 is positioned behind the elastic conducting strip 1.3. The drainage groove corresponding to the drainage port 1.9 is needed to be preset in the terminal fixing seat, once water enters from the front end of the terminal, the water can be timely drained through the drainage port, and water is prevented from penetrating into the cable crimping area at the rear end.

The elastic conductive sheet 1.3 may be subjected to surface treatment such as plating process (e.g., silver plating, nickel plating, etc.) to improve its conductivity, oxidation resistance, and corrosion resistance.

As an implementation mode, the front end of the elastic conducting strip 1.3 is provided with an inward bending angle, the elastic conducting strip 1.3 adopts the design of the bending angle, so that the elastic conducting strip 1.3 can be driven to stretch along the assembly groove 1.2 in the process of preventing the joint belt from being inserted into the joint fixing tube 1.1 in an angle, and the service life of 10000 times of plugging and unplugging is ensured.

Further, a conductive sheet guiding boss 1.10 positioned at the front side of the elastic conductive sheet 1.3 is formed on the inner wall of the connector fixing tube 1.1 and is used for protecting the elastic conductive sheet 1.3 and limiting the insertion of unqualified connectors; the elastic conductive sheet 1.3 can also be prevented from being reversely bent under the condition of angular insertion and extraction of the connector.

As an implementation mode, a waterproof ring installation groove 2.3 which is smoothly connected with the wiring groove 2.1 is further formed in the wiring section 2, and cable waterproof ring crimping wings 2.4 are formed along two sides of a notch of the waterproof ring installation groove 2.3; the waterproof ring mounting groove 2.3 is provided with a cable waterproof ring 2.6. The cable waterproof ring 2.6 comprises a fixed section and a sealing section, the surface of the fixed section is smooth and the size of the fixed section is smaller than that of the sealing section, and a plurality of sealing bulges are arranged on the outer wall of the sealing section along the circumferential direction, so that the sealing performance between the terminal and the terminal fixing seat after the terminal is assembled is improved; after the fixing section of the waterproof cable ring 2.6 is arranged in the waterproof ring mounting groove 2.3, the waterproof cable ring can be fixed through pressing and fixing the waterproof cable ring pressing and fixing wings 2.4.

In addition, the cable waterproof ring crimping wing 2.4 can also be used as an externally hung contact, and can be used for external communication cables, auxiliary electronic components and the like.

Through testing, the utility model effectively provides the test data of the positive pressure force value and the contact resistance of the elastic conducting strip 1.3 shown in figure 7, ensures the transmission of large current and can ensure the service life of terminal plugging and unplugging to be more than 10000 times.

The utility model also passes the test, referring to fig. 8, the terminal waterproof ring and the cable waterproof ring of the stamping electric terminal pass the early CAE simulation and the later test verification, and the protection grade of the cable core crimping area can reach over I PX 7.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The stamping electric terminal is characterized by being of a stamping forming structure and comprises a joint section (1) and a wiring section (2) which are connected; the front end of the joint section (1) is provided with a joint fixing pipe (1.1); the outer wall of the connector fixing tube (1.1) is provided with a plurality of uniformly encircling assembly grooves (1.2) along the circumferential direction, and elastic conductive sheets (1.3) inclining inwards are formed in the assembly grooves (1.2); a wiring groove (2.1) is formed in the wiring section (2), and cable crimping wings (2.2) are formed on two sides of a notch of the wiring groove (2.1).

2. The stamped electrical terminal according to claim 1, characterized in that the rear end of the joint section (1) is formed with a waterproof ring fixing tube (1.4), the waterproof ring fixing tube (1.4) being externally provided with a terminal waterproof ring (1.5).

3. The stamped electrical terminal according to claim 2, characterized in that the outer wall of the waterproof ring-fixing tube (1.4) is provided with a plurality of limiting openings (1.6) along the circumferential direction.

4. The stamped electrical terminal according to claim 1, characterized in that the outside of the header fixing tube (1.1) is formed with a number of locking tabs (1.7).

5. The stamped electrical terminal according to claim 1, characterized in that the exterior of the header fixing tube (1.1) is also formed with a terminal guiding portion (1.8) and a heat conducting portion (1.11).

6. The stamped electrical terminal according to claim 1, characterized in that the electrical connector fixing tube (1.1) is also provided with a drain opening (1.9) below.

7. The stamped electrical terminal according to claim 1, characterized in that the front end of the elastic conductive sheet (1.3) is formed with inwardly bent corners.

8. The stamped electrical terminal according to claim 7, characterized in that the inner wall of the header fixation tube (1.1) is also formed with a conductive sheet guiding boss (1.10) located at the front side of the elastic conductive sheet (1.3).

9. The stamped electrical terminal according to claim 1, characterized in that the wire connection section (2) is further formed with a waterproof ring mounting groove (2.3) in smooth connection with the wire connection groove (2.1), which is formed with cable waterproof ring crimping wings (2.4) along both sides of the notch of the waterproof ring mounting groove (2.3); the waterproof ring mounting groove (2.3) is provided with a cable waterproof ring (2.6).

10. The stamped electrical terminal according to claim 1, characterized in that the inner wall of the wire connection slot (2.1) is formed with a number of anti-slip protrusions (2.5).