阅读说明：本技术 一种连接件及led显示屏 (Connecting piece and LED display screen ) 是由 李祖雄 焦伟棋 吴加平 于 2020-05-25 设计创作，主要内容包括：本发明涉及LED显示屏的技术领域,提供了一种连接件及LED显示屏,其中连接件包括：连接件本体,具有用于与电路板的焊盘连接的焊接面,焊接面上开设有第一焊接槽,第一焊接槽延伸至焊接面的边缘；LED显示屏包括电路板,以及上述的连接件,连接件焊接于电路板上；本发明提供的连接件及LED显示屏具有以下优点：焊料中的空气可以通过第一焊接槽排出至焊接面的边缘,避免焊料中的空气形成气泡进而膨胀导致连接件本体倾斜,提升了焊接的精度,进而避免影响设置有该连接件的LED显示屏的装配精度而导致的LED显示屏不平整,显示效果差；另外,在焊接时,第一焊接槽增大了焊接面与焊盘之间的空间,进而提升焊接后的推拉力强度。(The invention relates to the technical field of LED display screens, and provides a connecting piece and an LED display screen, wherein the connecting piece comprises: the connector body is provided with a welding surface used for being connected with a welding disc of the circuit board, the welding surface is provided with a first welding groove, and the first welding groove extends to the edge of the welding surface; the LED display screen comprises a circuit board and the connecting piece, and the connecting piece is welded on the circuit board; the connecting piece and the LED display screen provided by the invention have the following advantages: air in the solder can be discharged to the edge of the welding surface through the first welding groove, so that the phenomenon that the connecting piece body inclines due to the fact that the air in the solder forms bubbles and expands is avoided, the welding precision is improved, the phenomenon that the LED display screen is uneven and poor in display effect due to the fact that the assembling precision of the LED display screen provided with the connecting piece is influenced is avoided; in addition, during welding, the first welding groove increases the space between the welding surface and the welding pad, and further improves the push-pull strength after welding.)

1. A connector, comprising:

the connecting piece body has the face of weld that is used for being connected with the pad of circuit board, offer the first welding groove that is used for supplying circulation of air and solder to fill on the face of weld, first welding groove extends to the edge of face of weld.

2. The connector of claim 1, wherein the welding surface further defines a second welding groove intersecting the first welding groove at an angle and communicating therewith, the second welding groove extending to an edge of the welding surface.

3. The connector of claim 2, wherein the depth of the first weld groove is greater than the depth of the second weld groove.

4. The connector of claim 1, further comprising a weld collar disposed around the connector body, the weld collar and an end of the connector body at which the weld face is disposed forming a stepped configuration.

5. The connector according to claim 1, further comprising a welding boss surrounding the bottom of the connector body, wherein the welding surface is formed on the welding boss, and the area of the projection of the welding boss on the welding surface is larger than the area of the welding surface.

6. The connector of claim 1, wherein the connector body is provided with a through hole communicating with the first welding groove.

7. The connector of claim 6, wherein the wall of the bore is threaded.

8. A connection piece according to claim 6, wherein the end of said aperture adjacent said weld face is provided with a chamfer.

9. A connecting piece according to any one of claims 1 to 8, wherein two locating posts are provided on the welding surface in opposing relation.

10. An LED display screen, comprising a circuit board, and the connector of any one of claims 1 to 9, wherein the connector is soldered to the circuit board.

Technical Field

The invention relates to the technical field of LED display screens, in particular to a connecting piece and an LED display screen.

Background

Along with the continuous development of LED display screen industry, module production technology constantly improves, and for the paster effect of better realization connecting piece, it has sufficient welding precision and welding strength to need to guarantee the connecting piece, and then improves the roughness of LED display screen to reach the display effect who promotes the display screen.

The connecting piece produced by the existing patch has the following defects: the welding surface is of a flat-bottom structure, the area of the flat-bottom structure is too large, the welding flux is not sufficiently heated, the welding flux is not sufficiently melted, and meanwhile, when the welding flux at the bottom of the connecting piece is subjected to reflow soldering, gas generated in the melting process cannot be discharged from the space between the welding flux and the bottom of the connecting piece in time, and the connecting piece is inclined due to expansion of the gas in the welding flux, so that the welding precision and the assembly precision are influenced; meanwhile, the inclination of the connecting piece can cause uneven tin climbing, and the push-pull strength of the connecting piece is reduced; further, the connecting piece slope that leads to during the welding can cause highly inconsistent between a plurality of connecting pieces, and then leads to being equipped with the roughness of the LED display screen of this connecting piece poor, and the display effect is poor.

Disclosure of Invention

The invention aims to provide a connecting piece and an LED display screen, and aims to solve the technical problem that in the prior art, the connecting piece of the LED display screen is easy to incline after being welded, so that the welding precision and the welding strength are low.

In order to achieve the above object, the present invention adopts a technical solution that is a connector, comprising:

the connecting piece body has the face of weld that is used for being connected with the pad of circuit board, offer the first welding groove that is used for supplying circulation of air and solder to fill on the face of weld, first welding groove extends to the edge of face of weld.

In one embodiment, the welding surface is further provided with a second welding groove which is obliquely intersected and communicated with the first welding groove, and the second welding groove extends to the edge of the welding surface.

In one embodiment, the depth of the first weld groove is greater than the depth of the second weld groove.

In one embodiment, the connector further comprises a welding convex disc arranged on the connector body in an encircling mode, and the welding convex disc and the end portion, provided with the welding surface, of the connector body form a step structure.

In one embodiment, the connector further comprises a welding boss annularly arranged at the bottom of the connector body, the welding surface is formed on the welding boss, and the area of the projection of the welding boss on the welding surface is larger than that of the welding surface.

In one embodiment, the connector body is provided with a through hole which communicates with the first welding groove.

In one embodiment, the walls of the perforations are provided with threads.

In one embodiment, the end of the bore adjacent the weld face is provided with a chamfer.

In one embodiment, two positioning columns which are oppositely arranged are arranged on the welding surface.

Another objective of the present invention is to provide an LED display screen, which includes a circuit board, and the connector is soldered on the circuit board.

The connecting piece and the LED display screen have the advantages that:

firstly, compared with a flat welding surface, the welding surface of the connecting piece body is provided with the first welding groove and extends to the edge of the welding surface, so that when the welding surface is welded on a welding pad of a circuit board, air in the welding flux can be discharged to the edge of the welding surface through the first welding groove, the phenomenon that the connecting piece body inclines due to the fact that the air in the welding flux forms bubbles and then expands is avoided, the welding precision is improved, the phenomenon that the LED display screen is uneven due to the fact that the assembling precision of the LED display screen provided with the connecting piece is influenced is avoided, and the display effect is poor;

secondly, during welding, the first welding groove increases the space between the welding surface and the welding pad, so that the welding flux can fill the first welding groove, more welding flux can stay on the welding surface, and the push-pull strength after welding is further improved;

finally, the groove wall of the first welding groove increases the contact area of the welding surface and the welding flux during welding, and the push-pull strength after welding is also improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of a connector according to an embodiment of the present invention;

FIG. 2 is a perspective view of another aspect of a connector according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a connector provided by an embodiment of the present invention.

The figures are numbered:

1-a connector body; 11-a welding surface; 12-a first weld groove; 13-a second weld groove; 14-perforating; 141-chamfered portions; 2-welding a convex disc; 3-welding a boss; 4-positioning columns.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the invention, and do not indicate that the device or component must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The following describes a specific implementation of the present invention in more detail with reference to specific embodiments:

as shown in fig. 1 and fig. 2, an embodiment of the invention provides a connector for soldering to a circuit board of an LED display screen, which is used for connecting other components.

The connecting piece includes: the connector body 1 is provided with a welding surface 11 used for being connected with a welding disc of a circuit board, a first welding groove 12 is formed in the welding surface 11, and the first welding groove 12 extends to the edge of the welding surface 11.

The manner of soldering the connector provided in this embodiment includes, but is not limited to, reflow soldering, which is exemplified as follows:

the solder is placed on one side of the welding surface 11 of the connector body 1, flows towards the welding surface 11 through a heating mode, is filled in the first welding groove 12 and is placed between the welding surface 11 and the welding pad, and then the welding surface 11 and the welding pad are bonded.

The connecting piece that this embodiment provided has:

firstly, compare in smooth face of weld 11, set up first welding groove 12 and extend to the edge of face of weld 11 on the face of weld 11 of the connecting piece body 1 of this embodiment, when making face of weld 11 weld in the pad of circuit board, the air in the solder can be discharged to the edge of face of weld 11 through first welding groove 12, avoid the air in the solder to form the bubble and then the inflation leads to connecting piece body 1 slope, the welded precision has been promoted, and then avoid influencing the assembly precision of the LED display screen that is provided with this connecting piece and the LED display screen that leads to is uneven, the display effect is poor;

secondly, during welding, the first welding groove 12 increases the space between the welding surface 11 and the welding pad, so that the welding flux can fill the first welding groove 12, more welding flux can stay on the welding surface 11, and the push-pull force strength after welding is further improved;

finally, the groove wall of the first welding groove 12 increases the contact area of the welding surface 11 and the welding flux during welding, and the push-pull strength after welding is also improved.

In one embodiment, the welding surface 11 is further provided with a second welding groove 13 obliquely intersecting and communicating with the first welding groove 12, and the second welding groove 13 extends to the edge of the welding surface 11. In the embodiment, by providing the second welding groove 13, the groove wall of the second welding groove 13 can be used to increase the area of the welding surface 11, thereby increasing the welding effect after welding and enhancing the strength of the push-pull force; in addition, the second welding groove 13 is obliquely intersected and communicated with the first welding groove 12, so that molten solder can flow into the first welding groove 12 and the second welding groove 13 in the welding process, the filling of the solder is more uniform and full, and the welding reliability is enhanced.

Furthermore, at least two second welding grooves 13 are arranged on the welding surface 11, the at least two second welding grooves 13 are perpendicular to each other and are communicated with each other, and the at least two second welding grooves 13 are obliquely intersected with the first welding groove 12; through the design, first welding groove 12 and second welding groove 13 can occupy the great area of face of weld 11, have increased the welding area of face of weld 11, and mutually perpendicular's second welding groove 13 can form the shape of "rice" word with first welding groove 12 simultaneously, and first welding groove 12 and second welding groove 13 distribute on face of weld 11 evenly promptly for the solder is evenly filled in first welding groove 12 and second welding groove 13, reinforcing welded reliability.

Further, the depth of the first welding groove 12 is greater than the depth of the second welding groove 13. In the embodiment, through the above design, the solder filled in the first soldering groove 12 and the second soldering groove 13 have different depths, which is beneficial to improving the strength of the push-pull force of the connecting member.

In one embodiment, the connecting piece further comprises a welding convex disc 2 arranged on the connecting piece body 1 in a surrounding mode, and the welding convex disc 2 and the end portion, provided with the welding surface 11, of the connecting piece body 1 form a step structure. In this embodiment, the solder is not only placed on the soldering surface 11, but also deposited on the end of the connector body 1, and the soldering convex disc 2 is arranged on the end of the connector body 1, where the soldering surface 11 is arranged, to form a step structure, so that the size of the soldering surface 11 is increased, the strength of the push-pull force is improved, and the reliability of soldering is enhanced.

In one embodiment, the connector further comprises a welding boss 3 annularly arranged at the bottom of the connector body 1, the welding surface 11 is formed on the welding boss 3, and the projection area of the welding boss 3 on the welding surface 11 is larger than the area of the welding surface 11. In this embodiment, the support of the post-welding boss 3 to the connector body 1 can be made more stable by the above design.

Referring to fig. 3, in one embodiment, the connector body 1 is provided with a through hole 14, and the through hole 14 is communicated with the first welding groove 12. In this embodiment, in order to solve the problem of discharging the air inside the solder during the reflow soldering process, the through hole 14 of the first soldering groove 12 of UNICOM is opened on the connecting piece plate body, so that the air of the solder contained in the first soldering groove 12 during the soldering process is discharged out of the connecting piece body 1 through the through hole 14, thereby avoiding the occurrence of a solder joint hole due to the fact that the air cannot be discharged, and ensuring that the connecting piece body 1 cannot shift and the soldering precision of the connecting piece body 1.

It should be further noted that the first welding groove 12, the second welding groove 13 and the through hole 14 enclose to form an air convection channel, and in the welding process, the air convection channel is increased to uniformly heat the solder and fully melt the solder, thereby improving the welding reliability. Specifically, during the reflow process, hot air can be blown to the middle part of the solder through the through holes 14, so that the temperature difference between the middle part of the solder and the side part of the solder is avoided, and the solder is heated unevenly and is melted insufficiently.

Further, the wall of the through hole 14 is provided with a thread. In this embodiment, be convenient for after the welding will adopt the thread tightening mode to be fixed in the installation shell with connecting piece body 1 through setting up this screw thread, improve the convenience of equipment.

Further, the end of the through hole 14 near the welding surface 11 is provided with a chamfered portion 141. In the present embodiment, the chamfered portion 141 is provided to facilitate the air of the solder to be discharged from the through hole 14 during the soldering process.

In one embodiment, two positioning posts 4 are oppositely arranged on the welding surface 11. In this embodiment, make the location of connecting piece more accurate through setting up two reference columns 4, the welding back is more firm, after weld forming, with the cooperation of locating hole on the circuit board, can increase the torsion resistance of connecting piece, increase the reliability.

The embodiment also provides an LED display screen, which includes a circuit board and the connector, wherein the connector is soldered on the circuit board.

The LED display screen provided by the embodiment has the beneficial effects that:

the LED display screen that is equipped with above-mentioned connecting piece has solved the problem of connecting piece slope in welding process, and the LED display screen of this embodiment has the structure and levels, advantage that the display effect is good.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.