CN216852585U

CN216852585U - Elastic cover plate structure for welding FPC parts

Info

Publication number: CN216852585U
Application number: CN202122961572.4U
Authority: CN
Inventors: 李贺龙; 吴东平
Original assignee: Kunshan Complex Micro Interconnection Co ltd
Current assignee: Kunshan Complex Micro Interconnection Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-06-28
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses an elastic cover plate structure for welding FPC parts, which comprises a bottom plate assembly, a steel sheet, a lower cover plate assembly and an upper cover plate assembly, wherein the FPC assembly is positioned between the bottom plate assembly and the steel sheet; the utility model discloses a portable electronic device, including the PAD region, the PAD region of FPC subassembly, the PAD region is located to the FPC subassembly, the PAD region is equipped with a plurality of parts of arranging on the steel sheet, be equipped with a plurality of brush tin openings on the steel sheet, brush tin opening and PAD region corresponding setting, the apron subassembly includes lower cover plate down, is equipped with a plurality of first holes of dodging that correspond the PAD region in the lower cover plate, the upper cover plate subassembly includes the upper cover plate, locates the fixed strip of upper cover plate front and back end, and imbeds the upper cover plate bottom and correspond with fixed strip elastic connection's briquetting, the briquetting runs through first hole of dodging and the PIN foot crimping of part in the PAD region corresponds, be equipped with the second of dodging the part in the briquetting and dodge the hole. The utility model realizes that the parts on the FPC pass through the furnace under pressure through the elastic cover plate assembly, the welding of the parts has no floating height problem, and the welding quality is improved.

Description

Elastic cover plate structure for welding FPC parts

Technical Field

The utility model belongs to the technical field of FPC (flexible printed circuit) board welding, and particularly relates to an elastic cover plate structure for welding FPC parts.

Background

In the manufacturing process of electronic products, large DIP parts with PIN PINs on an FPC are subjected to jack type welding and pass through a reflow furnace for operation, a conventional cover plate is in direct contact with the parts for compression joint and positioning, and due to the limitation of pressurizing position selection, the parts have uneven pressurization to cause pressure not to reach positions, so that the parts float high, and the cover plate has poor deformation; the aluminum cover plate or the synthetic stone cover plate is in direct contact with the parts, and the parts are easily damaged or the surface of the parts is scratched through high-temperature welding operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides an elastic cover plate structure for welding FPC parts, so that parts on an FPC are pressurized and passed through a furnace through an elastic cover plate assembly, the problem of no floating height of the parts during welding is solved, and the welding quality is improved. In order to achieve the purpose, the technical scheme of the utility model is as follows:

the elastic cover plate structure for welding the FPC part comprises a base assembly, a bottom plate assembly, a steel sheet, a lower cover plate assembly and an upper cover plate assembly which are sequentially stacked from bottom to top, wherein the FPC assembly is positioned between the bottom plate assembly and the steel sheet; the utility model discloses a PCB assembly, including the FPC, locate the PAD region of FPC tip, locate a plurality of parts of arranging in the PAD region, be equipped with a plurality of brush tin openings on the steel sheet, brush tin opening and the corresponding setting in PAD region, the apron subassembly includes the lower cover plate down, is equipped with a plurality of corresponding PAD region's the first hole of dodging that dodges in the lower cover plate, the upper cover plate subassembly includes the upper cover plate, locates the fixed strip of upper cover plate front and back end, and imbeds the upper cover plate bottom and with fixed strip elastic connection's briquetting, the briquetting runs through the first PIN foot crimping of dodging the hole and part in the PAD region and corresponds, it dodges the hole to be equipped with the second of dodging the part in the briquetting.

Specifically, the base component comprises a base, a plurality of first positioning columns arranged on the surface of the base at intervals in groups, and limiting angle pieces arranged at the peripheral angle positions of the base.

Specifically, the surface of base is equipped with a set of spaced mounting groove of arranging along its length direction, is equipped with a plurality of second reference columns in the mounting groove, and a plurality of first reference columns arrange in the both sides of mounting groove.

The bottom plate assembly comprises a bottom plate, a sinking groove close to the circumferential edge is formed in the surface of the bottom plate, the steel sheet and the sinking groove are arranged in a copying mode and embedded into the steel sheet, a plurality of fixing grooves are formed in the sinking groove at intervals, the bottom plate is attached to the base, and corners of the bottom plate around are matched with the corresponding clamping connection of the limiting corner pieces.

Specifically, a group of positioning holes are respectively formed in the front end and the rear end of the fixing groove, and the positioning holes are correspondingly matched with the first positioning columns in an inserting mode.

Specifically, the bottom surface of bottom plate is equipped with a set of connecting strip of interval arrangement, second reference column and the corresponding hole site cooperation location in the connecting strip.

Specifically, FPC and fixed slot profile modeling set up, first locating column runs through the bottom plate and spacing FPC's front and back position.

Specifically, the lower cover plate assembly further comprises a plurality of pressure-proof strips arranged on the circumferential direction of the lower cover plate, a plurality of connecting columns are arranged on the pressure-proof strips arranged at the front end and the rear end of the lower cover plate, and the connecting columns are in plug-in fit with corresponding hole positions in the upper cover plate.

Specifically, the vertex angles all around of lower cover plate and the corresponding joint cooperation of spacing corner fittings.

Specifically, a plurality of lower cover plate heat dissipation holes are formed in the lower cover plate, and upper cover plate heat dissipation holes corresponding to the lower cover plate heat dissipation holes are formed in the upper cover plate.

Compared with the prior art, the elastic cover plate structure for welding the FPC part has the following beneficial effects:

the upper cover plate assembly and the lower cover plate assembly are matched, so that the combined upper cover plate and lower cover plate have a good heat dissipation function, and the influence of high welding temperature on parts is avoided; the upper cover plate cooperates with the elastic pressing block, the position of a PIN foot of a part in a PAD area is stably positioned by the pressing block, the pressing block is pressurized to the position, the PIN foot of the part is uniformly stressed, the part is welded without the problem of floating height, and the appearance of the part is guaranteed without damage.

Drawings

FIG. 1 is a schematic view of a split structure according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the base assembly and the bottom plate assembly in the present embodiment;

FIG. 3 is a schematic view of the steel sheet structure in this embodiment;

FIG. 4 is a schematic view of a lower cover plate assembly of the present embodiment;

FIG. 5 is a schematic view of the upper cover plate assembly of the present embodiment;

FIG. 6 is a schematic cross-sectional view of the pressing block in the present embodiment;

the figures in the drawings represent:

1 base component, 11 bases, 12 first positioning columns, 13 limiting angle pieces, 14 mounting grooves, 15 second positioning columns,

2 bottom plate assembly, 21 bottom plate, 22 sinking groove, 23 fixing groove, 24 positioning hole, 25 connecting strip, 26 bottom plate heat dissipation hole,

3 steel sheet, 31 tin-brushing through holes,

4 lower cover plate components, 41 lower cover plates, 42 pressure-proof strips, 43 connecting columns, 44 lower cover plate heat dissipation holes, 45 first avoidance holes,

5 upper cover plate assembly, 51 upper cover plate, 52 fixing strip, 53 pressing block, 54 second avoidance hole, 55 fixing strip heat dissipation hole, 56 pressing block groove, 57 upper cover plate heat dissipation hole,

6FPC assembly, 61FPC, 62PAD area, 63 parts.

Detailed Description

The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Example (b):

referring to fig. 1-6, the present embodiment is an elastic cover plate structure for welding FPC components, which includes a base assembly 1, a bottom plate assembly 2, a steel sheet 3, a lower cover plate assembly 4, and an upper cover plate assembly 5 stacked in sequence from bottom to top, and an FPC assembly 6 is positioned between the bottom plate assembly 2 and the steel sheet 3.

The base component 1 comprises a base 11, a plurality of first positioning columns 12 arranged on the surface of the base 11 at intervals in groups, and limiting angle pieces 13 arranged at the peripheral angle positions of the base 11. The surface of base 11 is equipped with a set of spaced mounting groove 14 of arranging along its length direction, is equipped with a plurality of second reference column 15 in the mounting groove 14, and a plurality of first reference column 12 arrange in the both sides of mounting groove 14. The limit corner fitting 13 is detachably connected and fixed with the base 11. The mounting groove 14 is used for welding work as a heat dissipation space.

The bottom plate assembly 2 comprises a bottom plate 21, and the surface of the bottom plate 21 is provided with a sinking groove 22 close to the circumferential edge. A plurality of fixing grooves 23 arranged at intervals are arranged in the sinking groove 22, the bottom plate 21 is attached to the base 11, and the peripheral corners of the bottom plate 21 are correspondingly clamped and matched with the limiting corner pieces 13. The front end and the rear end of the fixing groove 23 are respectively provided with a group of positioning holes 24, and the positioning holes 24 are correspondingly inserted and matched with the first positioning columns 12. The bottom surface of bottom plate 21 is equipped with a set of connecting strip 25 of interval arrangement, and second reference column 15 and the corresponding hole site cooperation location in the connecting strip 25. The bottom plate 21 is provided with a plurality of bottom plate heat dissipation holes 26.

The FPC assembly 6 comprises an FPC61, a PAD area 62 arranged at the end part of an FPC61, and a plurality of parts 63 arranged in the PAD area 62; the part 63 is inserted into the PAD area 62. The FPC61 is arranged with the fixed groove 23 in a copying way, and the first positioning column 12 penetrates through the bottom plate 21 and limits the front and rear positions of the FPC 61.

The steel sheet 3 is provided with a plurality of tin brushing through holes 31, the steel sheet 3 and the sinking groove 22 are arranged in a copying way and embedded into the sinking groove, and the tin brushing through holes 31 are arranged corresponding to the PAD area 62.

The lower cover plate assembly 4 comprises a lower cover plate 41 and a plurality of pressure-proof strips 42 arranged on the circumference of the lower cover plate 41; the anti-press bars 42 positioned at the front and rear ends of the lower cover plate 41 are provided with a plurality of connecting posts 43. The lower cover plate 41 is provided with a plurality of lower cover plate heat dissipation holes 44 and a plurality of first avoidance holes 45 corresponding to the PAD area 62. The peripheral vertex angles of the lower cover plate 41 are correspondingly clamped and matched with the limiting corner pieces 13.

The upper cover plate assembly 5 includes an upper cover plate 51, a fixing strip 52 disposed at the front and rear ends of the upper cover plate 51, and a pressing block 53 embedded in the bottom of the upper cover plate 51 and elastically connected to the fixing strip 52. The pressing block 53 penetrates through the first avoidance hole 45 and is in press-fit correspondence with the PIN of the part 63 in the PAD area 62, and a second avoidance hole 54 for avoiding the part 63 is formed in the pressing block 53. The fixing strip 52 is detachably connected with the upper cover plate 51, and the fixing strip 52 is provided with a fixing strip heat radiation hole 55 corresponding to the second avoidance hole 54.

A plurality of pressing block grooves 56 for containing the pressing blocks 53 are formed in the upper cover plate 51, the pressing blocks 53 are hung in the pressing block grooves 56, the tops of the peripheries of the pressing blocks 53 are connected with the bottoms of the fixing strips 52 through springs, and the positions of the peripheries of the pressing blocks 53 are stably stressed.

The upper cover plate 51 is provided with upper cover plate heat dissipation holes 57 corresponding to the lower cover plate heat dissipation holes 44. The connecting column 43 is inserted and matched with a corresponding hole in the upper cover plate 51.

When the automatic soldering machine is applied to the embodiment, the bottom plate component 2 is positioned on the base component 1, the FPC component 6 is placed on the bottom plate component 2, the steel sheet 3 covers the FPC component 6 and exposes the PAD area 62, the tin brushing operation is performed in the tin brushing through hole 31 of the steel sheet 3 and is printed on the PAD area 62, the lower cover plate component 4 and the upper cover plate component 5 are combined and positioned on the steel sheet 3, the pressing block 53 of the upper cover plate 51 penetrates through the lower cover plate 41 and the steel sheet 3, the elastic pressing connection is performed on the PAD area 62 of the FPC61, the empty part 63 is enabled to be pressed and connected with the PIN foot of the part 63 at the same time, the part 63 is enabled to be stably stressed and finally enters the reflow oven for soldering, and the PIN foot of the part 63 and the PAD area 62 are integrated through soldering.

In the embodiment, the upper cover plate assembly 5 and the lower cover plate assembly 4 are matched, so that the combined upper cover plate 51 and the lower cover plate 41 have a good heat dissipation function, and the influence of high welding temperature on parts is avoided; upper cover plate 51 and the cooperation of elasticity briquetting 53, part 63PIN foot position in the PAD region 62 is stably fixed a position to briquetting 53, and briquetting 53 pressurizes and targets in place, and the even atress of part 63PIN foot, part 63 welding do not have the height problem of floating, and guarantee that part 63 outward appearance is not damaged.

What has been described above are merely some of the embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model.

Claims

The FPC part welds uses elasticity apron structure, its characterized in that: the FPC assembly is positioned between the bottom plate assembly and the steel sheet; the utility model discloses a portable electronic device, including the PAD region, the PAD region of FPC subassembly, the PAD region is located to the FPC subassembly, the PAD region is equipped with a plurality of parts of arranging on the steel sheet, be equipped with a plurality of brush tin openings on the steel sheet, brush tin opening and PAD region corresponding setting, the apron subassembly includes lower cover plate down, is equipped with a plurality of first holes of dodging that correspond the PAD region in the lower cover plate, the upper cover plate subassembly includes the upper cover plate, locates the fixed strip of upper cover plate front and back end, and imbeds the upper cover plate bottom and correspond with fixed strip elastic connection's briquetting, the briquetting runs through first hole of dodging and the PIN foot crimping of part in the PAD region corresponds, be equipped with the second of dodging the part in the briquetting and dodge the hole.
2. The elastic cover plate structure for FPC part welding according to claim 1, characterized in that: the base component comprises a base, a plurality of first positioning columns arranged on the surface of the base at intervals in groups, and limiting angle pieces arranged at the positions of the peripheral corners of the base.
3. The elastic cover plate structure for FPC part welding according to claim 2, characterized in that: the surface of base is equipped with a set of spaced mounting groove of arranging along its length direction, is equipped with a plurality of second reference columns in the mounting groove, and a plurality of first reference columns are arranged in the both sides of mounting groove.
4. The elastic cover plate structure for FPC part welding according to claim 2, characterized in that: the bottom plate subassembly includes the bottom plate, and the bottom plate surface is equipped with the groove that sinks near circumference edge, the steel sheet sets up and imbeds in it with sinking groove profile modeling, sink the inslot and be equipped with the fixed slot that a plurality of intervals set up, the bottom plate sets up with the base laminating, the corner and the corresponding joint cooperation of spacing corner fittings around the bottom plate.
5. The elastic cover plate structure for FPC part welding according to claim 4, characterized in that: and the front end and the rear end of the fixing groove are respectively provided with a group of positioning holes, and the positioning holes are correspondingly matched with the first positioning columns in an inserting manner.
6. The elastic cover plate structure for welding FPC parts according to claim 3, wherein: the bottom surface of bottom plate is equipped with a set of connecting strip of interval arrangement, the second reference column is fixed a position with the corresponding hole site cooperation in the connecting strip.
7. The elastic cover plate structure for welding FPC parts according to claim 4, wherein: FPC and fixed slot profile modeling set up, first reference column runs through the bottom plate and spacing FPC's front and back position.
8. The elastic cover plate structure for FPC part welding according to claim 1, characterized in that: the lower cover plate assembly further comprises a plurality of pressure-proof strips arranged on the circumferential direction of the lower cover plate, a plurality of connecting columns are arranged on the pressure-proof strips arranged at the front end and the rear end of the lower cover plate, and the connecting columns are in inserting fit with corresponding hole positions in the upper cover plate.
9. The elastic cover plate structure for FPC part welding according to claim 2, characterized in that: and the peripheral vertex angles of the lower cover plate are correspondingly clamped and matched with the limiting corner pieces.
10. The elastic cover plate structure for FPC part welding according to claim 1, characterized in that: a plurality of lower cover plate heat dissipation holes are formed in the lower cover plate, and upper cover plate heat dissipation holes corresponding to the lower cover plate heat dissipation holes are formed in the upper cover plate.