Tin connection prevention golden finger structure of intelligent wearable product
By setting interlaced vias in the gold finger structure of the smart wearable product and filling solder, the problem of excessive use of tin during the welding process is solved, the phenomenon of tin connection is avoided, and the normal function of the product is ensured.
Patent Information
- Application Number
- CN202420851546.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The gold finger structure of existing smart wearable products is prone to excessive tin during welding, resulting in tin connection and affecting functionality.
Design a tin-resistant gold finger structure for a smart wearable product, and reduce the use of tin by placing up and down through holes on the TPFPC and the first and second gold fingers of the display FPC and solder is filled in the vias.
It effectively avoids excessive use of tin, reduces the occurrence of tin connection, and ensures the normal function of smart wearable products.
Smart Images
Figure CN222638784U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gold fingers of intelligent wearable products, in particular to an anti-tinning gold finger structure of intelligent wearable products. Background Art
[0002] At present, there are more and more intelligent products. With the development of science and technology, intelligence can be seen everywhere in people's lives. There are two main FPCs for wearable products, TPFPC and TPFPC. Generally, TP FPC is soldered on TPFPC through gold fingers, and gold fingers are generally flat designs. Only a small amount of tin can be applied during tinning. During the soldering process, the soldering iron needs to be molten before soldering. This is easy to use excessive tin, resulting in tinning and functional problems. Due to the small size, it may not be discovered at the first time and will flow to the client, thus affecting the normal use of the customer. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a gold finger structure for preventing tin bridging of a smart wearable product.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A gold finger structure for preventing solder joints of a smart wearable product comprises: a TPFPC and a display FPC; a first gold finger is arranged on the left side of the front face of the TPFPC; a second gold finger is arranged on the left side of the top of the front face of the display FPC; a plurality of via holes are arranged on the first gold finger and the second gold finger, the front faces of the first gold finger and the second gold finger have the same shape and size, and the positions of the via holes arranged thereon are the same; the TPFPC and the display FPC are connected together by soldering.
[0006] In one of the embodiments, an electronic component is disposed on the right side of the front side of the TPFPC, and the size of the left front side of the TPFPC matches the size of the front side of the top left portion of the display FPC.
[0007] In one of the embodiments, a conductive double-sided adhesive tape is provided on the front side of the top of the display FPC near the left side, and the shape and size of the front side of the conductive double-sided adhesive tape are compatible with the shape and size of the front side of the electronic component.
[0008] In one of the embodiments, the front side of the display FPC is in a "z" shape, and a QR code is disposed on the front side of the central portion of the display FPC.
[0009] In one embodiment, the via holes on the first gold finger and the second gold finger are arranged on each PIN in a left-right staggered manner.
[0010] In one embodiment, the first gold finger and the second gold finger are both coated with solder, and the via hole is also filled with solder.
[0011] In one of the embodiments, an alignment line is provided at the bottom right side of the conductive double-sided adhesive on the upper portion of the front side of the display FPC.
[0012] In one of the embodiments, a gold finger connected to a mainboard is provided on the right side of the front side of the bottom portion of the display FPC.
[0013] In one of the embodiments, the display FPC is made of a flexible circuit board.
[0014] In one of the embodiments, a reinforcing plate is provided on the back of the conductive double-sided adhesive tape and on the back of the gold finger of the display FPC.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] The anti-tin ligation gold finger structure of the smart wearable product of the utility model is achieved by arranging via holes which are staggered up and down on the first gold finger and the second gold finger of the TPFPC and the display FPC. When tinning, the tin is not only on the surface of the gold finger and in the designed via holes, but also in the via holes. Therefore, the design scheme allows the staff to fix the first and second gold fingers with an electric soldering iron without the need for solder paste, thereby avoiding the problem that the original soldering method is prone to use excessive tin, resulting in ligation and causing functional problems. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a front view schematic diagram of the TPFPC and display FPC of the anti-tinning gold finger structure of the smart wearable product of the utility model;
[0019] Figure 2 This is a schematic diagram of the gold finger structure of the anti-tinning gold finger structure of the smart wearable product of the utility model.
[0020] In the figure: 1. TPFPC; 11. Electronic components; 12. First gold finger; 2. Display FPC; 21. Second gold finger; 22. Alignment line; 23. QR code; 24. Conductive double-sided tape; 3. Via. DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.
[0022] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0023] Unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0025] like Figure 1-2As shown, a gold finger structure for preventing tin bridging of a smart wearable product includes: TPFPC1 and display FPC2; a first gold finger 12 is arranged on the left side of the front of TPFPC1; a second gold finger 21 is arranged on the left side of the top of the front of display FPC2; a plurality of vias 3 are arranged on the first gold finger 12 and the second gold finger 21, and the first gold finger 12 and the second gold finger 21 have the same shape and size on the front, and the positions of the vias 3 arranged thereon are the same; TPFPC1 and display FPC2 are connected together by soldering. It should be noted that when TPFPC1 and display FPC2 are connected to each other, it is necessary to first align the first gold finger 12 on TPFPC1 with the second gold finger 21 on display FPC2, and then overlap them vertically, so that the first gold finger 12 and the second gold finger 21 overlap perfectly, and then perform welding.
[0026] like Figure 1-2 As shown, in one embodiment, an electronic component 11 is arranged on the right side of the front of TPFPC1, and the size of the front of the left side of TPFPC1 matches the size of the front of the left part of the top of the display FPC2. It should be noted that the width of the front of TPFPC1 differs from the width of the front of the top part of the display FPC2 by 0.2 mm to 0.3 mm.
[0027] like Figure 1-2 As shown, in one embodiment, a conductive double-sided adhesive 24 is provided on the front side of the top of the display FPC2 near the left side, and the shape and size of the front side of the conductive double-sided adhesive 24 are adapted to the shape and size of the front side of the electronic component 11. It should be noted that after the TPFPC1 and the display FPC2 are welded together, the electronic component 11 will be attached to the conductive double-sided adhesive 24.
[0028] like Figure 1-2 As shown, in one embodiment, the shape of the front of the display FPC2 is "z" shaped, and a two-dimensional code 23 is set on the front of the central part of the display FPC2. It should be noted that the two-dimensional code 23 records the production information of the display FPC2.
[0029] like Figure 1-2 As shown, in one embodiment, the vias 3 on the first gold finger 12 and the second gold finger 21 are staggered left and right on each PIN. It should be noted that the front shape of the via 3 is circular, and half of the via 3 is opened on the end of the metal PIN.
[0030] like Figure 1-2 As shown, in one embodiment, the first gold finger 12 and the second gold finger 21 are both coated with solder, and the via hole 3 is also filled with solder. It should be noted that the via hole 3 has relatively more solder.
[0031] like Figure 1-2As shown in one embodiment, an alignment line 22 is provided at the bottom right of the conductive double-sided adhesive tape 24 on the front of the display FPC2. It should be noted that this design can facilitate the staff to align the TPFPC1 and the display FPC2.
[0032] like Figure 1-2 As shown, in one embodiment, a gold finger connected to the main board is provided on the right side of the front of the bottom part of the display FPC2. The display FPC2 is made of a flexible circuit board. A reinforcing plate is provided on the back of the display FPC2 where the conductive double-sided adhesive 24 is provided and on the back of the gold finger. It should be noted that this design allows the display FPC2 to be bent as needed.
[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A gold finger structure for preventing tin bridging of a smart wearable product, characterized in that: include: TPFPC (1) and display FPC (2); A first gold finger (12) is provided on the left side of the front side of the TPFPC (1); A second gold finger (21) is provided on the left side of the top of the front side of the display FPC (2); A plurality of via holes (3) are provided on the first gold finger (12) and the second gold finger (21); the front faces of the first gold finger (12) and the second gold finger (21) are of the same shape and size, and the positions of the via holes (3) provided thereon are the same; The TPFPC (1) and the display FPC (2) are connected together by soldering.
2. The anti-tinning gold finger structure of the smart wearable product according to claim 1, characterized in that: An electronic component (11) is arranged on the right side of the front of the TPFPC (1), and the size of the left front of the TPFPC (1) matches the size of the front of the top left part of the display FPC (2).
3. The anti-tinning gold finger structure of the smart wearable product according to claim 2, characterized in that: A conductive double-sided adhesive tape (24) is provided on the front side of the top of the display FPC (2) close to the left side, and the shape and size of the front side of the conductive double-sided adhesive tape (24) are compatible with the shape and size of the front side of the electronic component (11).
4. The anti-tinning gold finger structure of the smart wearable product according to claim 1, characterized in that: The front face of the display FPC (2) is in a "z" shape, and a two-dimensional code (23) is arranged on the front face of the central part of the display FPC (2).
5. The anti-tinning gold finger structure of the smart wearable product according to claim 1, characterized in that: The via holes (3) on the first gold finger (12) and the second gold finger (21) are arranged on each PIN in a left-right staggered manner.
6. The anti-tinning gold finger structure of the smart wearable product according to claim 1, characterized in that: The first gold finger (12) and the second gold finger (21) are both coated with solder, and the via hole (3) is also filled with solder.
7. The anti-tinning gold finger structure of the smart wearable product according to claim 3, characterized in that: An alignment line (22) is provided at the bottom right of the conductive double-sided adhesive (24) on the upper front side of the display FPC (2).
8. The anti-tinning gold finger structure of the smart wearable product according to claim 1, characterized in that: A gold finger for connecting with the mainboard is arranged on the right side of the front side of the bottom part of the display FPC (2).
9. The anti-tinning gold finger structure of the smart wearable product according to claim 1, characterized in that: The display FPC (2) is made of a flexible circuit board.
10. The anti-tinning gold finger structure of the smart wearable product according to claim 3, characterized in that: The back of the display FPC (2) where the conductive double-sided adhesive (24) is arranged and the back position of the gold finger are both provided with a reinforcing plate.