CN217562850U

CN217562850U - Welding-free terminal structure of vehicle-mounted connector

Info

Publication number: CN217562850U
Application number: CN202220539023.XU
Authority: CN
Inventors: 左嘉钰; 姚涛
Original assignee: Jiangsu Kunwen Automotive Electronic Technology Co ltd
Current assignee: Jiangsu Kunwen Automotive Electronic Technology Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-10-11
Anticipated expiration: 2032-03-14

Abstract

The utility model relates to a vehicle-mounted connector exempts from to weld terminal structure, including terminal and main part, the terminal is including inserting end and link, and the link sets up the main part, and the upper and lower surface that the terminal inserted the end is provided with a recess respectively, and the edge that the terminal inserted the end outline outside is provided with the fillet, the terminal inserts and runs through on the central axis position and be provided with the thin wall, the end that inserts of terminal divide into terminal intensity region, terminal retentivity region, terminal transition region, terminal insertion region, terminal pre-plugging region in proper order from the link to the direction that inserts the end, wherein the terminal retentivity region, terminal transition region, terminal insertion region four edges all radius angles, and the cross-section outline is the cambered surface. The utility model provides a vehicle-mounted connector exempts from solder terminal has refined the profile in each position that the terminal inserted the in-process and related to, on this basis, has optimized the inside structure size of terminal, makes the maximum force of the in-process of inserting of terminal be 46.103N.

Description

Welding-free terminal structure of vehicle-mounted connector

Technical Field

The utility model belongs to the connector field, especially, on-vehicle connector exempts from to weld terminal structure.

Background

The conventional PCB and the terminal are all welded, namely, the PCB and the terminal are electrically connected after being fixed by soldering, but the conventional PCB and the terminal have the following defects: the soldering tin has poor environment resistance, low strength, easy short circuit, complex welding process, difficult control of the process and high cost.

Therefore, there is a need for a soldering-free terminal that is simple to manufacture, low in cost, free of soldering process, high in strength, and versatile. There are various soldering-free connection methods for the electronic connector and the PCB, among which the Press-fit type connector is widely used in the communication industry, and the Press-fit terminal has various forms, such as a through-hole fisheye terminal, a movable pin type terminal, a C-type terminal, an H-type terminal, etc.

The structure shape of the connecting part of the internal structure of the terminal is designed, the purpose is to increase the assembly stability, in order to improve the insertion stability and the coaxiality, the connecting part of the internal structure of the terminal in a partial product can be designed into a bent shape, but the main processing mode of the product is stamping, and the structure can greatly increase the production cost in the stamping and manufacturing process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a vehicle-mounted connector blind hole exempts from to weld terminal structure for PCB grafting that improves the assembly stability through the mode of outside and inner structure matching design.

The utility model adopts the technical proposal that:

the utility model provides a welding-free terminal structure of vehicle-mounted connector, includes terminal and main part, and the terminal is including inserting end and link, and the link sets up the main part, and the upper and lower surface that the terminal inserted the end is provided with a recess respectively, and the edge that the terminal inserted the end external contour is provided with the fillet, the terminal inserts and runs through on the central axis position and be provided with the thin wall, the end that inserts of terminal divide into terminal intensity region, terminal retentivity region, terminal transition region, terminal insertion region, terminal pre-plugging region in proper order from the link to the direction that inserts the end, wherein terminal retentivity region, terminal transition region, terminal insertion region four edges all radius angles, and the cross-section outline is the cambered surface.

And the full edges of the insertion ends of the terminal pre-insertion area and the terminal strength area are rounded.

Also, a single terminal is provided on the body.

Also, a plurality of terminals are provided on the body.

And the grooves are arranged on the terminal positions on the upper side and the lower side of the thin wall in a mirror image mode.

And the size of the thin wall is set to be 0.03 +/-0.02 mm.

And the outer profiles of the four edge sections of the terminal retention area, the terminal transition area and the terminal insertion area are all arc surfaces.

And the diameter of the round corner of the circular arc surface is 1.14 to 1.24mm.

As another transition structure, the middle parts of the arc surfaces of the cross-sectional outer profiles of the terminal holding force area, the terminal transition area and the terminal insertion area form depressions, and the depressions form concave arc surfaces.

The utility model discloses the advantage does with positive effect:

the utility model provides a vehicle-mounted connector exempts from solder terminal has refined the profile in each position that the terminal inserted the in-process and related to, on this basis, has optimized the inside structure size of terminal, makes the maximum force of the in-process of inserting of terminal be 46.103N.

Drawings

Fig. 1 is a schematic sectional view of a solder-free terminal of a vehicle-mounted connector according to the present invention;

fig. 2 is a schematic structural view of a solder-free terminal of the vehicle-mounted connector provided by the present invention;

FIG. 3 is an enlarged view of the cross-section A-A of FIG. 2;

FIG. 4 is an enlarged structural view taken along the line B-B in FIG. 2;

FIG. 5 is an enlarged view of the cross-section taken along the line C-C in FIG. 2;

FIG. 6 is an enlarged view of the cross-section D-D of FIG. 2;

fig. 7 is an enlarged cross-sectional view of another structure of the solderless terminal of the vehicle-mounted connector (axial cross section of the transition region when the terminal is vertically downward).

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention is not limited thereto.

A welding-free terminal structure of a vehicle-mounted connector is disclosed, and comprises a terminal 1 and a main body 2, wherein the terminal comprises an insertion end and a connecting end, the connecting end is provided with the main body, when the welding-free terminal structure is in actual application, a plurality of terminals can be arranged on one main body, or one main body can be correspondingly arranged on a single terminal, the upper surface and the lower surface (the left side and the right side when the terminal is inserted into a PCB) of the terminal insertion end are respectively provided with a groove 1-4, a thin wall 1-5 penetrates through the position of a central axis of the terminal insertion end, mirror images of the two grooves are arranged on the positions of the terminals on the upper side and the lower side of the thin wall, and edges of the external outline of the terminal insertion end are provided with fillets.

The utility model discloses an innovation point is:

referring to fig. 1, the insertion end of the terminal is divided into a terminal strength area S5, a terminal retention area S4, a terminal transition area S3, a terminal insertion area S2, and a terminal pre-insertion area S1 in sequence from the connection end to the insertion end.

The basic function of the terminal pre-plugging area S1 is to lead terminals into a PCB, round corners are formed on the full edges of the terminal pre-plugging area, and gentle slope guiding is achieved.

And a terminal insertion region S2 which comes into interference contact with the PCB board, generating an insertion force. Four edges of the terminal pre-plugging area are rounded off, the bevel edge and the straight edge are in smooth transition, the outer contour of the section is an arc surface 1-1, the diameter of the arc surface at the circular angle is 1.16-1.20 mm, and when the blind hole solder-free terminal is interfered with a PCB (printed circuit board), the blind hole solder-free terminal can generate plastic deformation to prevent hard interference.

The terminal transition region S3 is mainly to smooth the terminal insertion. Four edges of the terminal transition area are rounded off, the bevel edge and the straight edge are in smooth transition through a round angle, the outer contour of the section is an arc surface 1-2, the round angle of the arc surface is 1.16-1.20 mm, and the terminal can be better contacted with a PCB.

Terminal holding power region S4, this region produces the second power value crest and provides the holding power, the regional four edges rounding of terminal holding power, the cross-section outline is arc surface 1-3, the diameter range of arc surface corner department is 1.14 to 1.24mm, can be better with PCB contact, the width approaches to terminal intensity region, can provide the biggest holding power.

Terminal intensity region S5, this region provide terminal intensity itself, and four edge fillets in terminal intensity region pass through with holding power district fillet, with the main part junction, improve the blind hole and exempt from to weld terminal structure bulk strength.

Referring to fig. 3 to 5, the profile cross sections of the two sides of the terminal, the insertion region transition region and the holding force region are all arc surfaces, so that hard extrusion on a hole of a PCB plate due to insertion of a straight surface is avoided, the extrusion deformation of the PCB plate is reduced, the thickness of the thin wall is set to be 0.03 +/-0.02 mm while the arc surfaces are arranged, the flexibility and plastic strain of the terminal and the PCB plate during extrusion are met, the maximum force of the terminal in the insertion process is 46.103N, and the maximum force converted into the complete connector is 368.824N.

See fig. 7, the above-mentioned structural design can adopt the stamping process in the actual production process, so can also according to the actual use condition, terminal holding power region, terminal transition region, terminal insert regional both sides middle towards thin, both sides fillet can receive extrusion force to flow to the outside and lead to the fillet to be outstanding, terminal holding power region, terminal transition region, the terminal inserts regional circular arc face middle part of cross-section outline all forms sunken, sunken formation concave arc face, the diameter of circular arc face fillet around each sunken still is 1.16 to 1.20mm.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.

Claims

1. The utility model provides a welding terminal structure is exempted from to on-vehicle connector, includes terminal and main part, and the terminal is including inserting end and link, and the link sets up the main part, and the upper and lower surface that the terminal inserted the end is provided with a recess respectively, and the terminal inserts the edge of end outline and is provided with fillet, its characterized in that: the terminal comprises a terminal insertion end, a terminal body and a terminal body, wherein a thin wall penetrates through the position of a central axis of the terminal insertion end, the insertion end of the terminal body is sequentially divided into a terminal strength area, a terminal holding force area, a terminal transition area, a terminal insertion area and a terminal pre-insertion area from a connecting end to the direction of the insertion end, four edges of the terminal holding force area, the terminal transition area and the terminal insertion area are all rounded off, and the outline of the section is an arc surface.

2. The solder-free terminal structure of an in-vehicle connector according to claim 1, characterized in that: and the full edges of the insertion ends of the terminal pre-insertion area and the terminal strength area are rounded.

3. The solder-free terminal structure of an in-vehicle connector according to claim 1, characterized in that: a single terminal is disposed on the body.

4. The solder-free terminal structure of an in-vehicle connector according to claim 1, characterized in that: a plurality of terminals are disposed on the body.

5. The solder-free terminal structure of an in-vehicle connector according to claim 1, characterized in that: the grooves are arranged on the positions of the terminals on the upper side and the lower side of the thin wall in a mirror image mode.

6. The solder-free terminal structure of an in-vehicle connector according to claim 1, characterized in that: the size of the thin wall is set to be 0.03 +/-0.02 mm.

7. The solder-free terminal structure of an in-vehicle connector according to claim 6, wherein: the external profiles of the four edge sections of the terminal holding force area, the terminal transition area and the terminal insertion area are all arc surfaces.

8. The solder-free terminal structure of an in-vehicle connector according to claim 7, wherein: the diameter of the round corner of the circular arc surface is 1.14-1.24 mm.

9. The solder-free terminal structure of an in-vehicle connector according to claim 8, wherein: and the middle parts of the arc surfaces of the cross section outer profiles of the terminal holding force area, the terminal transition area and the terminal insertion area are all formed with depressions.

10. The solder-free terminal structure of the vehicle-mounted connector according to claim 9, wherein: the depressions are all in the shape of a concave arc surface.