Golden finger and circuit board
By designing the connecting wire assembly through the inner layer connection position and power supply components, we ensure that all gold fingers are powered off when they are pulled out, solving the problem of current impact in the prior art and improving the safety and service life of gold fingers.
Patent Information
- Application Number
- CN202420752781.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-12
AI Technical Summary
Existing gold fingers are prone to repeated power-up and power-down during hot-swap, resulting in current impact and damage to the internal and external power supply of the circuit board.
A gold finger is designed, including a connecting wire assembly, inner layer and power supply component. The power supply component forms a connecting position. One end of the connecting wire assembly is connected to the power supply component, and the other end is connected to the inner layer through the connecting position to ensure that the power supply component is being unplugged. All power is cut off when exiting to avoid current impact.
It effectively prevents the current impact of the gold finger when it is pulled out, reduces damage to the internal and external power supply of the gold finger module, and improves service life and safety.
Smart Images
Figure CN222302088U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gold fingers, in particular to a gold finger and a circuit board. Background Art
[0002] Gold fingers are composed of many golden conductive contacts. They are called "gold fingers" because they are gold-plated and arranged like fingers. Gold fingers are actually a layer of gold on the copper clad board through electroplating. Gold has strong oxidation resistance and can protect the internal circuit from corrosion. It is also highly conductive and will not cause signal loss. Gold has very strong ductility and can make the contact area between contacts larger under appropriate pressure, thereby reducing contact resistance and improving signal transmission efficiency. Because the coating thickness is only tens of microns, it is very easy to wear. Therefore, it is necessary to avoid plugging and unplugging components with gold fingers to extend their service life.
[0003] The gold finger defines the name of each finger according to the protocol. For products with two rows of gold fingers, the current power sheet and ground sheet are also divided into two rows. This will cause repeated power on and power off during the hot plugging of the gold fingers, causing current shock to the internal and external power supplies of the circuit board.
[0004] Therefore, it is necessary to provide a new golden finger to solve the above-mentioned technical problems. Utility Model Content
[0005] The main purpose of the utility model is to provide a gold finger and a circuit board, aiming to improve the technical problem of current shock occurring during hot plugging of the gold finger in the prior art.
[0006] To achieve the above-mentioned purpose, the gold finger proposed in the utility model includes a connecting wire assembly, an inner layer, a surface layer arranged on the top of the inner layer and a power supply component, the power supply component is arranged on the surface layer, the power supply component forms a connecting position, one end of the connecting wire assembly is connected to the power supply component, and the other end of the connecting wire assembly passes through the connecting position and is connected to the inner layer.
[0007] In one embodiment, the power supply component includes a first power bar, a suspension piece and a second power bar, the connection position includes a first via, a second via and a third via, the first via is arranged on the first power bar, the second via is arranged on the suspension piece, and the third via is arranged on the second power bar, the connecting wire assembly includes at least three connecting wires, one end of the first connecting wire is connected to the first power bar, and the other end of the first connecting wire passes through the first via and is connected to the inner layer; one end of the second connecting wire is connected to the suspension piece, and the other end of the second connecting wire passes through the second via and is connected to the inner layer; one end of the third connecting wire is connected to the second power bar, and the other end of the third connecting wire passes through the third via and is connected to the inner layer.
[0008] In one embodiment, the first power bar, the suspension sheet and the second power bar are connected in sequence.
[0009] In one embodiment, the number of the power supply components is at least two, the two first power supply bars are connected to each other, the two suspension sheets are connected to each other, and the two second power supply bars are connected to each other.
[0010] In one embodiment, the surface layer also includes a first gold finger piece and a grounding component. The number of the grounding components is two, and the two grounding components are arranged on both sides of the power supply component. The number of the first gold finger pieces is multiple, and the multiple first gold fingers are distributed between the power supply component and the grounding component.
[0011] In one embodiment, the gold finger further includes a ground connection line, one end of the ground connection line is connected to the ground component, and the other end of the ground connection line is connected to the inner layer.
[0012] In one embodiment, the surface layer also includes a second gold finger sheet, the grounding component includes multiple grounding sheets, the number of the second gold finger sheets is multiple, the multiple grounding sheets are evenly distributed on both sides of the power supply component, and the multiple second gold finger sheets are evenly distributed between two adjacent grounding sheets.
[0013] In one embodiment, the surfaces of the first gold finger sheet and the second gold finger are both paved with electroplated hard gold.
[0014] In one embodiment, the connecting wire is one of a gold wire, an aluminum wire and a copper wire.
[0015] The utility model also provides a circuit board, comprising a PCB body and the above-mentioned gold finger, wherein the gold finger is connected to the PCB body.
[0016] In the above scheme, the gold finger includes a connecting wire assembly, an inner layer, a surface layer arranged on the top of the inner layer and a power supply component, the power supply component is arranged on the surface layer, the power supply component is formed with a connecting position, one end of the connecting wire assembly is connected to the power supply component, and the other end of the connecting wire assembly passes through the connecting position and is connected to the inner layer. In the prior art, since the power supply component includes two power connection sections and a suspended section, and the suspended section is arranged between the two power connection sections, when the gold finger is pulled out, when one power connection section is pulled out, the suspended section is connected to the external power supply, so that the entire gold finger will be powered off, and then the gold finger will continue to be pulled out. After the suspended section is pulled out, since the other power connection section has not been pulled out, the other power connection section is connected to the power supply, and the gold finger will be powered on again. When the other power connection section is pulled out, the gold finger will be powered off again, so that when the gold finger is pulled out, it will be subjected to two consecutive current shocks, which will cause damage to the internal and external power supplies of the gold finger module; the technical solution of the utility model connects the power supply component to one end of the connecting wire assembly, and then directly connects the other end of the connecting wire assembly through the connecting position to the inner copper sheet, so that the entire structure of the power supply component is connected to the inner copper sheet, so that when the gold finger is pulled out, the gold finger can only be powered off when all the power supply components are pulled out, so that no current shock occurs, which greatly reduces the damage to the internal and external power supplies of the gold finger module. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0018] Figure 1 A schematic diagram of the overall structure of a golden finger embodiment provided by the utility model;
[0019] Figure 2 This is a schematic diagram of the internal connections of a golden finger embodiment provided by the utility model.
[0020] Description of Figure Numbers:
[0021] 100, gold finger; 1, connecting wire assembly; 11, connecting wire; 2, inner layer; 3, power supply component; 31, connection position; 32, first power bar; 321, first via; 33, suspension piece; 331, second via; 34, second power bar; 341, third via; 4, first gold finger piece; 5, grounding component; 6, second gold finger piece; 51, grounding piece.
[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0026] In the prior art, since the power supply component includes two power connection sections and a suspended section, and the suspended section is arranged between the two power connection sections, when the gold finger 100 is pulled out, when one power connection section is pulled out, the suspended section is connected to the external power supply, so the whole gold finger 100 will be powered off, and then the gold finger 100 will continue to be pulled out. When the suspended section is pulled out, since the other power connection section has not been pulled out, the other power connection section is connected to the power supply, and the gold finger 100 will be powered on again. When the other power connection section is pulled out, the gold finger 100 will be powered off again. In this way, when the gold finger 100 is pulled out, it will be subjected to two consecutive current shocks, which will cause damage to the inside of the gold finger module and the external power supply.
[0027] See also Figure 1 and Figure 2The utility model proposes a gold finger 100, including a connecting wire assembly 1, an inner layer 2, a surface layer arranged on the top of the inner layer 2 and a power supply component 3, wherein the power supply component 3 is arranged on the surface layer, and the power supply component 3 is formed with a connection position 31, one end of the connecting wire assembly 1 is connected to the power supply component 3, and the other end of the connecting wire assembly 1 passes through the connection position 31 and is connected to the inner layer 2. In the prior art, since the power supply component 3 includes two power connection sections and a suspended section, and the suspended section is arranged between the two power connection sections, when the gold finger 100 is pulled out, when one power connection section is pulled out, the suspended section is connected to the external power supply, so that the entire gold finger 100 will be powered off, and then the gold finger 100 will continue to be pulled out, and when the suspended section is pulled out, since the other power connection section has not been pulled out, the other power connection section is connected to the power supply, and the gold finger 100 will be powered on again, and when the other power connection section is pulled out, the gold finger 100 will be powered off again, so that when the gold finger 100 is pulled out When the gold finger 100 is pulled out, it will be subjected to two consecutive current shocks, which will cause damage to the internal and external power supplies of the gold finger module; the technical solution of the utility model connects the power supply component 3 with one end of the connecting wire assembly 1, and then directly connects the other end of the connecting wire assembly 1 with the inner layer 2 copper sheet through the connecting position 31, so that the entire structure of the power supply component 3 is connected to the inner layer 2 copper sheet, so that when the gold finger 100 is pulled out, the gold finger 100 can only be powered off when the power supply component 3 is completely pulled out, so that there will be no current shock, which greatly reduces the damage to the internal and external power supplies of the gold finger 100 module.
[0028] See also Figure 1 and Figure 2In one embodiment, the power supply component 3 includes a first power bar 32, a suspension piece 33 and a second power bar 34, the connection position 31 includes a first via 321, a second via 331 and a third via 341, the first via 321 is arranged on the first power bar 32, the second via 331 is arranged on the suspension piece 33, and the third via 341 is arranged on the second power bar 34, the connecting wire assembly 1 includes at least three connecting wires 11, one end of the first connecting wire 11 is connected to the first power bar 32, and the other end of the first connecting wire 11 passes through the first via 321 to connect to the inner layer 2; one end of the second connecting wire 11 is connected to the suspension piece 33, and the other end of the second connecting wire 11 passes through the second via 331 to connect to the inner layer 2; one end of the third connecting wire 11 is connected to the second power bar 34, and the other end of the third connecting wire 11 passes through the third via 341 to connect to the inner layer 2. Specifically, during production, the production personnel connect the first connecting wire 11 to the first power bar 32, and then connect the other end of the first connecting wire 11 to the inner layer 2 copper through the first via 321, and then connect the second connecting wire 11 to the suspension sheet 33, and then connect the second connecting wire 11 to the inner layer 2 copper through the second via 331, and then connect the third connecting wire 11 to the second power bar 34, and then connect the third connecting wire 11 to the inner layer 2 copper through the third via 341; insert the power supply component 3 into the external power supply, so that the gold finger 100 can be used normally, and when the gold finger 100 is not needed, the user will When the second power bar 34 is unplugged, since the first power bar 32, the suspension piece 33 and the second power bar 34 are all connected to the inner layer 2, after the second power is unplugged, the suspension piece 33 is connected to the external power supply, so that the external power supply will be connected to the first power bar 32 through the inner layer 2, so that the gold finger 100 is still powered on. In this way, during the process of pulling out the gold finger 100, the gold finger 100 will always be powered on. Only after the first power bar 32, the suspension piece 33 and the second power bar 34 are all unplugged, the gold finger 100 will disconnect the external power supply, so that no current shock will occur, thereby protecting the safety of the gold finger 100 and the external power supply.
[0029] See also Figure 1 and Figure 2In one embodiment, the first power bar 32, the suspension piece 33 and the second power bar 34 are connected in sequence. When the gold finger 100 is not needed, when the user unplugs the second power bar 34, since the first power bar 32, the suspension piece 33 and the second power bar 34 are all connected to the inner layer 2, and the first power bar 32, the suspension piece 33 and the second power bar 34 are connected in sequence, after the second power bar 34 is unplugged, the suspension piece 33 is connected to the external power supply, so that the external power supply will be connected to the first power bar 32 through the inner layer 2, and the suspension piece 33 is connected to the first power bar 32, which is equivalent to the external power supply being connected to the first power bar 32, so that the gold finger 100 is still in a powered-on state, so that in the process of unplugging the gold finger 100, the gold finger 100 will always be powered on, and the gold finger 100 will only be disconnected after the first power bar 32, the suspension piece 33 and the second power bar 34 are all unplugged, so that there will be no current shock, thereby protecting the safety of the gold finger 100 and the external power supply; through the above-mentioned setting, the safety of the gold finger 100 and the external power supply can be further protected.
[0030] See also Figure 1 and Figure 2 In one embodiment, the number of power supply components 3 is at least two, the two first power supply bars 32 are connected to each other, the two suspension pieces 33 are connected to each other, and the two second power supply bars 34 are connected to each other. By providing multiple power supply components 3, the power supply components 3 can be connected to external power supplies of different models, which greatly improves the input power of the gold finger 100.
[0031] See also Figure 1 and Figure 2 In one embodiment, the surface layer further includes a first gold finger sheet 4 and a grounding component 5, the number of the grounding components 5 is two, and the two grounding components 5 are arranged on both sides of the power supply component 3, the number of the first gold finger sheets 4 is multiple, and the multiple first gold finger sheets 4 are distributed between the power supply component 3 and the grounding component 5. By providing the grounding component 5, static electricity can be prevented, and the life of the gold finger 100 is greatly improved.
[0032] See also Figure 1 and Figure 2 In one embodiment, the gold finger 100 further includes a ground connection line, one end of which is connected to the ground component 5, and the other end of which is connected to the inner layer 2. The ground component 5 is also connected to the inner layer 2, so that when the gold finger 100 is plugged in and out, it can always be grounded, further reducing the occurrence of current shock, and further protecting the safety of the gold finger 100 and the external power supply.
[0033] See also Figure 1In one embodiment, the surface layer further includes a second gold finger sheet 6, the grounding component 5 includes a plurality of grounding sheets 51, the number of the second gold finger sheets 6 is multiple, the plurality of grounding sheets 51 are evenly distributed on both sides of the power supply component 3, and the plurality of second gold finger sheets 6 are evenly distributed between two adjacent grounding sheets 51. By providing a plurality of grounding sheets 51, there will be a grounding sheet 51 every other section on the gold finger 100, which can further improve the static discharge capability and further improve the service life of the gold finger 100. And according to different types of gold fingers 100, different numbers of second gold finger sheets 6 are selected, so that the gold finger 100 can meet different usage environments.
[0034] In one embodiment, the surfaces of the first gold finger sheet 4 and the second gold finger sheet 6 are both paved with electroplated hard gold. Specifically, the present embodiment adopts electroplated nickel gold, and its thickness can reach 3u to 50u. Due to its superior conductivity, oxidation resistance and wear resistance, it is widely used in gold fingers 100 that need to be frequently plugged in and out or PCB boards that need to be frequently subjected to mechanical friction. Therefore, electroplating a layer of nickel gold on the PCB board can obtain good conductivity of nickel gold, and can also make it have wear resistance and oxidation resistance.
[0035] In one embodiment, the connection wire 11 is one of a gold wire, an aluminum wire and a copper wire. In the case of connection wires 11 of different materials, gold wire, aluminum wire and copper wire are commonly used materials with good electrical conductivity, and such a configuration can improve the efficiency of electrical conduction.
[0036] The utility model also provides a circuit board, including a PCB body and the above-mentioned gold finger 100, the gold finger 100 being connected to the PCB body. The specific structure of the gold finger 100 refers to the above-mentioned embodiment. Since the circuit board in this embodiment adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.
[0037] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A golden finger, characterized in that: It includes a connecting wire assembly, an inner layer, a surface layer arranged on the top of the inner layer and a power supply component, wherein the power supply component is arranged on the surface layer, the power supply component is formed with a connecting position, one end of the connecting wire assembly is connected to the power supply component, and the other end of the connecting wire assembly passes through the connecting position and is connected to the inner layer.
2. The golden finger according to claim 1, characterized in that: The power supply component includes a first power bar, a suspension piece and a second power bar, the connection position includes a first via, a second via and a third via, the first via is arranged on the first power bar, the second via is arranged on the suspension piece, and the third via is arranged on the second power bar, the connecting wire assembly includes at least three connecting wires, one end of the first connecting wire is connected to the first power bar, and the other end of the first connecting wire passes through the first via and is connected to the inner layer; one end of the second connecting wire is connected to the suspension piece, and the other end of the second connecting wire passes through the second via and is connected to the inner layer; one end of the third connecting wire is connected to the second power bar, and the other end of the third connecting wire passes through the third via and is connected to the inner layer.
3. The golden finger according to claim 2, characterized in that: The first power bar, the suspension sheet and the second power bar are connected in sequence.
4. The golden finger according to claim 3, characterized in that: The number of the power supply components is at least two, the two first power supply bars are connected to each other, the two suspension sheets are connected to each other, and the two second power supply bars are connected to each other.
5. The gold finger according to claim 1, characterized in that: The surface layer also includes a first gold finger sheet and a grounding component. The number of the grounding components is two, and the two grounding components are arranged on both sides of the power supply component. The number of the first gold finger sheets is multiple, and the multiple first gold fingers are distributed between the power supply component and the grounding component.
6. The gold finger according to claim 5, characterized in that: The gold finger further includes a ground connection line, one end of the ground connection line is connected to the ground component, and the other end of the ground connection line is connected to the inner layer.
7. The gold finger according to claim 6, characterized in that: The surface layer also includes a second gold finger sheet, the grounding component includes multiple grounding sheets, the number of the second gold finger sheets is multiple, the multiple grounding sheets are evenly distributed on both sides of the power supply component, and the multiple second gold finger sheets are evenly distributed between two adjacent grounding sheets.
8. The golden finger according to claim 7, characterized in that: The surfaces of the first gold finger piece and the second gold finger piece are both paved with electroplated hard gold.
9. The golden finger according to claim 2, characterized in that: The connecting wire is one of a gold wire, an aluminum wire and a copper wire.
10. A circuit board, characterized in that: It comprises a PCB body and the gold finger as claimed in any one of claims 1 to 9, wherein the gold finger is connected to the PCB body.