CN217009607U

CN217009607U - Electrical connection assembly

Info

Publication number: CN217009607U
Application number: CN202220619824.7U
Authority: CN
Inventors: 梁申程
Original assignee: Shenzhen Everwin Precision Technology Co Ltd
Current assignee: Shenzhen Everwin Precision Technology Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-19
Anticipated expiration: 2032-03-21

Abstract

The utility model provides an electric connection assembly, includes circuit board and welded fastening in shell fragment on the circuit board, its characterized in that, the circuit board includes the plate body, locates a pair of golden finger on the plate body surface and certainly the blind hole that the plate body caves in and forms, the shell fragment includes the base plate, certainly the base plate rear end is bent in the reverse direction and is extended the elastic arm that forms, be formed at the contact portion of elastic arm free end, certainly the horizontal both sides of base plate are bent downwards and are extended the alar part that forms, certainly a pair of first leg and a pair of second leg that the alar part formed of bending relatively, first leg insert and weld in the blind hole, the second leg pastes dress and welds in on the golden finger of plate body. This application electrical connection assembly's welded fastening power is strong, reducible interference to the circuit board design.

Description

Electrical connection assembly

Technical Field

The present disclosure relates to electrical connectors, and more particularly to an electrical connector assembly.

Background

The elastic sheet connecting device is widely applied to electronic equipment for electric connection under various conditions, and the elastic sheet connecting device has a patch type and a broken board plug-in type according to different installation modes; there are vertical contacts, lateral contacts, etc. depending on the type of contact. In electronic equipment, the thickness of a product generally requires to be thin, such as a mobile phone and the like, the front side and the back side of a circuit board generally integrate a large number of components including chips, resistors and the like, but some components also need to be integrated on the circuit board, such as an external charging interface, an earphone interface, a board-to-board connector and the like required by connection between each main component and the circuit board, and some signals are single, and generally, simple elastic pieces are directly adopted to realize electric connection, such as signals of an antenna, a vibration motor, a microphone and the like. The broken board plug-in type elastic sheet can generally effectively reduce the whole thickness of the circuit board, but too many broken board positions of the circuit board are not beneficial to the circuit design in the circuit board.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide an electrical connection assembly that can reduce the overall thickness of the circuit board, has strong soldering fixing force, and reduces the design difficulty of the circuit board.

For solving above-mentioned technical problem, the application provides an electricity connection element, including circuit board and welded fastening in shell fragment on the circuit board, its characterized in that, the circuit board package rubbing board body, locate plate body a pair of golden finger on the surface reaches certainly the blind hole that the plate body is sunken to be formed, the shell fragment includes the base plate, certainly the base plate rear end reverse bend extend the elastic arm that forms, be formed at the contact portion of elastic arm free end, certainly the horizontal both sides of base plate bend downwards extend the alar part that forms, certainly a pair of first leg and a pair of second leg that the alar part formed of bending relatively, first leg insert and weld in the blind hole, the second leg dress weld in on the golden finger of plate body.

Preferably, the blind hole does not penetrate through the board body of the circuit board, the blind hole is located on the front side of the golden finger, and the horizontal position of the first welding foot is lower than that of the second welding foot so as to enter the blind hole.

Preferably, the depth of the blind hole is between three-quarters and one-half of the thickness of the plate body.

Preferably, the depth of the blind hole is three-quarters of the thickness of the plate body.

Preferably, the elastic sheet further comprises a tensioning portion formed by reversely folding the rear end of the substrate, the elastic arm comprises a horizontal arm formed by horizontally and forwardly extending the tensioning portion and an inclined arm formed by obliquely extending the horizontal arm to the lower front side, and the contact portion is formed at the tail end of the inclined arm.

Preferably, the edge of the board body of the circuit board is located in a gap at the front end of the pair of blind holes, and the inclined arm is at least partially located in the gap.

Preferably, the contact portion extends downward to a side of a lower surface of the board body.

Preferably, the elastic piece further includes a support arm formed by bending and extending from the end of the inclined arm toward the rear upper side, and a free end of the support arm is supported on the lower surface of the substrate and can slide on the lower surface of the substrate.

Preferably, the transverse width of the support arm close to the substrate section is greater than the width of the support arm far away from one side of the substrate, and the wing parts are bent inwards at two sides of the support arm to form a pre-pressing part for pressing the support arm.

Preferably, the horizontal position of the prepressing part is higher than the horizontal position of the second welding leg.

This application electrical connection component is through seting up the blind hole on the circuit board inwards bend respectively on the alar part of shell fragment both sides and form insert and weld in first leg in the blind hole and paste dress weld in the second leg on circuit board surface can effectively strengthen the weld fixation power of shell fragment, simultaneously, do not run through the circuit design in order to do benefit to the circuit board of circuit board.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of an electrical connection assembly of the present application;

FIG. 2 is a perspective view of a spring plate of the electrical connection assembly of the present application;

FIG. 3 is a perspective view of a circuit board of the electrical connection assembly of the present application;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 5 is a sectional view taken along the line B-B shown in fig. 1.

Description of the reference numerals

A circuit board-10; a plate body-11; a blind hole-12; notch-13; a spring plate-20; a substrate-21; a tension part-22; a resilient arm-23; a horizontal arm-231; a tilting arm-232; a contact portion-24; a support arm-25; support point-251; a wing-26; a prepressing section-27; a first fillet-281; second solder tail-282.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

In the present application, the X direction shown in fig. 1 is taken as the lateral direction, the Y direction is taken as the longitudinal direction or the front-rear direction, and the Z direction is taken as the vertical direction.

Referring to fig. 1, the electrical connection assembly of the present application includes a circuit board 10 and a spring plate soldered and fixed on the circuit board 10.

Referring to fig. 1 and fig. 2, the circuit board 10 includes a board body 11, at least one pair of blind holes 12 formed on the board body 11, and a notch 13 formed on an edge of the board body 11. The blind hole 12 does not penetrate through the circuit board 10, and if the height of the blind hole 12 is only half of the thickness of the board body 11. In a specific implementation, the height of the blind hole 12 is adjustable, the height of the blind hole 12 is 3/4 to 1/2 of the thickness of the plate body 11, and preferably, the height of the blind hole 12 is 3/4 of the thickness of the plate body 11. The notch 13 is located between a pair of the blind holes 12 as viewed in the front-rear direction. A pair of golden fingers (not numbered) is arranged at the rear side of the blind hole 12.

As shown in fig. 3, the elastic sheet 20 includes a base plate 21, a tensioning portion 22 formed by bending the rear end of the base plate 21 in the opposite direction, an elastic arm 23 formed by extending the tensioning portion 22 obliquely downward and forward, a supporting arm 25 formed by bending and extending the free end of the elastic arm 23 toward the base plate 21, a contact portion 24 formed at the free end of the elastic arm 23, a wing portion 26 formed by bending and extending downward from two lateral sides of the base plate 21, and a first solder leg 281 and a second solder leg 282 formed by bending the lower end of the wing portion 26 inward.

The elastic arm 23 includes a horizontal arm 231 extending from the tension portion 22 and parallel to the base plate 21, and an inclined arm 232 extending from a front end of the horizontal arm 231 obliquely downward and forward, and the contact portion 24 is formed at a distal end of the inclined arm 232. The support arm 25 is formed to extend upward and rearward from the tip of the tilt arm 232, and the free end of the support arm 25 is in sliding contact with the lower surface of the base plate 21 as a support point 251. The width of the supporting arm 25 near the supporting point 251 is larger than that far from the supporting point 251, and the front end of the wing part 26 is folded inwards corresponding to the supporting arm 25 to form a pre-pressing part 27 abutting against the supporting arm 25. The prepressing portion 27 keeps the contact portion 24 of the free end of the elastic arm 23 at a predetermined horizontal position, which is well known in the art and will not be described herein.

A pair of second fillets 282 formed under the tension part 22 are bent inward at the lower side of the rear end of the wing part 26 corresponding to the position of the tension part 22. The wing portion 26 is bent inward at a position corresponding to the horizontal arm 231 to form a pair of first solder feet 281.

As shown in fig. 1 to 5, the horizontal position of the first solder leg 281 is lower than the horizontal position of the second solder leg 282, and the horizontal position of the second solder leg 282 is lower than the horizontal position of the pre-pressing portion 27. Specifically, the lower surfaces of the pair of second solder feet 282 are attached and soldered to a pair of gold fingers of the circuit board 10, and the pair of first solder feet 281 is inserted into the pair of blind holes 12 and soldered to the blind holes 12. The bottom surface of the first leg 281 and the bottom surface of the blind hole 12 may contact or have a certain gap to facilitate solder bonding.

The inclined arm 232 is at least partially located in the notch 13, and the notch 13 is used for avoiding the elastic arm 23 to avoid interference. A portion of the inclined arm 232 and the contact portion 24 extend out of the front of the circuit board 10, and the contact portion 24 extends downward to a position near or beyond the bottom surface of the circuit board 10.

When the electrical connection assembly is in operation, the object (as shown in fig. 4, position F and direction) presses the contact portion 24 from bottom to top, so that the elastic arm 23 is elastically deformed, and the supporting point 251 of the supporting arm 25 slides backwards on the bottom surface of the substrate 21.

This application electrical connection component is through seting up blind hole 12 on circuit board 10 bend inwards respectively on the alar part of shell fragment 20 both sides and form and insert and weld in first leg 281 in the blind hole 12 and paste dress weld in the second leg 282 on circuit board 10 surface can effectively strengthen the welding fixed power of shell fragment 20, simultaneously, does not run through circuit design in order to do benefit to circuit board 10 in circuit board 10.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an electric connection assembly, includes circuit board and welded fastening in shell fragment on the circuit board, its characterized in that, the circuit board includes the plate body, locates a pair of golden finger on the plate body surface and certainly the blind hole that the plate body caves in and forms, the shell fragment includes the base plate, certainly the base plate rear end is bent in the reverse direction and is extended the elastic arm that forms, be formed at the contact portion of elastic arm free end, certainly the horizontal both sides of base plate are bent downwards and are extended the alar part that forms, certainly a pair of first leg and a pair of second leg that the alar part formed of bending relatively, first leg insert and weld in the blind hole, the second leg pastes dress and welds in on the golden finger of plate body.

2. The electrical connection assembly of claim 1, wherein the blind hole does not penetrate through a board body of the circuit board, the blind hole is located on a front side of the gold finger, and a horizontal position of the first solder leg is lower than a horizontal position of the second solder leg to enter into the blind hole.

3. The electrical connection assembly of claim 2, wherein the blind hole has a depth of between three-quarters and one-half of the thickness of the board body.

4. The electrical connection assembly of claim 3, wherein the blind hole has a depth of three-quarters of the thickness of the board body.

5. The electrical connection assembly as claimed in claim 2, wherein the resilient plate further comprises a tension portion formed by folding back the rear end of the base plate, the resilient arm comprises a horizontal arm extending horizontally forward from the tension portion, and an inclined arm extending obliquely forward and downward from the horizontal arm, and the contact portion is formed at a distal end of the inclined arm.

6. The electrical connection assembly of claim 5, wherein the edge of the board body of the circuit board is positioned in a notch at the front end of the pair of blind holes, and the tilt arm is at least partially positioned in the notch.

7. The electrical connection assembly as claimed in claim 6, wherein the contact portion extends downward to a side of a lower surface of the board body.

8. The electrical connection assembly as claimed in claim 7, wherein the resilient member further comprises a support arm bent and extended from the end of the inclined arm toward the rear and upward direction, and the free end of the support arm is supported on and slidable on the lower surface of the substrate.

9. The electrical connection assembly of claim 8, wherein the lateral width of the support arm adjacent the substrate segment is greater than the width of the support arm on the side away from the substrate, and the wing portions are bent inward on both sides of the support arm to form a pre-press portion for pressing against the support arm.

10. The electrical connection assembly as claimed in claim 9, wherein the horizontal position of the prepressing portion is higher than the horizontal position of the second fillet.