CN219248182U - Printed circuit board and electronic equipment - Google Patents
Printed circuit board and electronic equipment Download PDFInfo
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- CN219248182U CN219248182U CN202320041731.5U CN202320041731U CN219248182U CN 219248182 U CN219248182 U CN 219248182U CN 202320041731 U CN202320041731 U CN 202320041731U CN 219248182 U CN219248182 U CN 219248182U
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- circuit board
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Abstract
The utility model discloses a printed circuit board and electronic equipment, which relate to the technical field of circuit board manufacturing, wherein the printed circuit board comprises: the device comprises a substrate and a plurality of golden fingers arranged on the substrate, wherein each golden finger comprises an insulating medium layer arranged on the substrate and a metal structure arranged on the insulating medium layer; the metal structure comprises: the connecting device comprises a first end part, a second end part and a connecting part, wherein one end of the first end part is connected with one end of the connecting part, the other end of the connecting part is connected with one end of the second end part, and the connecting part is of an inclined ladder-shaped structure; the connecting part of the first end part and the second end part of the metal structure is provided with the inclined trapezoid structure, and the inclined trapezoid structure can effectively reduce the resistance when the golden finger is plugged in or out, so that the golden finger on the printed circuit board is easier to plug in or out with the external slot.
Description
Technical Field
The present utility model relates to the field of circuit board manufacturing technologies, and in particular, to a printed circuit board and an electronic device.
Background
Printed circuit boards (Printed Circuit Board, PCBs) are widely used in various electronic products, as carriers for the connection of various electronic components in a circuit; gold fingers are typically provided on pluggable PCBs for connection to other circuit boards.
The golden finger on the existing PCB is usually manufactured on an insulating medium layer, the structure of the golden finger is a rectangular structure formed by metal copper with a certain thickness, the part of the front end of the golden finger, which is used for being inserted into an external circuit board slot, is of a planar structure, and when the golden finger of the structure is inserted into and pulled out of the external circuit board slot, the front end of the golden finger is of the planar rectangular structure, so that the insertion resistance of the golden finger is large, and the insertion and the pulling are difficult.
Disclosure of Invention
Based on the above, it is necessary to provide a printed circuit board and an electronic device for solving the problems that the insertion resistance of the golden finger is large and the insertion is difficult due to the rectangular structure with the front end being a plane on the existing PCB.
In a first aspect, an embodiment of the present utility model provides a printed circuit board, including:
the device comprises a substrate and a plurality of golden fingers arranged on the substrate, wherein each golden finger comprises an insulating medium layer arranged on the substrate and a metal structure arranged on the insulating medium layer;
the metal structure comprises: the connecting device comprises a first end part, a second end part and a connecting part, wherein one end of the first end part is connected with one end of the connecting part, the other end of the connecting part is connected with one end of the second end part, and the connecting part is of an inclined ladder-shaped structure.
The scheme has the following beneficial effects:
according to the printed circuit board, the plurality of golden fingers are arranged, the metal structure is arranged on the insulating medium layer, the inclined trapezoid structure is arranged at the joint of the first end part and the second end part of the metal structure, and the inclined trapezoid structure can effectively reduce the resistance when the golden fingers are plugged and unplugged, so that the golden fingers on the printed circuit board are easier to plug and unplug with the external slot.
Optionally, the inclined ladder structure has an inclined plane with an inclination angle smaller than 90 °.
Optionally, the inclined plane is a plane or a circular arc concave surface.
Optionally, the thickness of the second end portion is less than 15 μm.
Optionally, the length of the second end is in the range of 0.2mm to 0.4mm.
Optionally, the thickness of the first end is greater than the thickness of the second end.
Optionally, the golden finger further includes: and the dry film protective layer is positioned on the upper surface of the first end part, and the thickness of the dry film protective layer ranges from 30 mu m to 50 mu m.
Optionally, the thickness of the insulating medium layer ranges from 0.2mm to 0.3mm.
Optionally, the insulating medium layer extends out of the second end portion by a preset distance, and a side, extending out of the second end portion, of the insulating medium layer is an inclined plane with a preset angle.
In a second aspect, an embodiment of the present utility model provides an electronic device, including an electronic component soldered to the printed circuit board according to the first aspect.
The scheme has the following beneficial effects:
according to the electronic equipment, the electronic components are welded on the printed circuit board with the inclined trapezoid golden finger, the golden finger is provided with the metal structure on the insulating medium layer, the connection part of the first end part and the second end part of the metal structure is provided with the inclined trapezoid structure, and the inclined trapezoid structure can effectively reduce the resistance when the golden finger is inserted and pulled out, so that the electronic equipment on the printed circuit board and the slot on the external circuit board are easier to insert and pull out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a printed circuit board structure according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a first golden finger according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a second golden finger according to an embodiment of the present utility model;
the symbols are as follows:
100. a substrate; 1. a metal structure; 11. a first end; 12. a second end; 13. a connection part; 2. an insulating dielectric layer; 21. an inclined plane with a preset angle; 3. and (5) a dry film protective layer.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.
It is to be understood that the embodiments set forth below represent the necessary information to enable those skilled in the art to practice the embodiments and illustrate the best mode of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure and the accompanying claims.
It will be further understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will also be understood that when an element is referred to as being "connected" or "coupled" to another element,
it may be directly connected or coupled to another element or intervening elements may be present. In contrast, when one 5 element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.
It should also be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc,
"bottom", "middle", "top", and the like may be used herein to describe various elements
The elements, directional or positional relationships, are based on those shown in the drawings, are provided only for the convenience of 0 in describing the utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must be of a kind
There are specific orientations, configurations and operations in specific orientations, and therefore these elements should not be limited by these clauses.
These terms are only used to distinguish one element from another element. For example, the first element may be referred to as
Is an "upper" element, and similarly, a second element may be termed a "5 upper" element, depending on the relative orientation of the elements, without departing from the scope of the present disclosure.
It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and-
Or a group thereof.
0 unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs
The same meaning as commonly understood by one of ordinary skill in the art is disclosed. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In one embodiment, a printed circuit board structure as shown in fig. 1 is provided, the printed circuit board structure comprising: the substrate 100 and a plurality of golden fingers disposed on the substrate 100, wherein the golden fingers include: an insulating medium layer 2 and a metal structure 1, wherein the insulating medium layer 2 is arranged on the substrate 100, and the metal structure is arranged on the surface of the insulating medium layer 2.
The metal structure 1 includes: the connecting part comprises a first end part 11, a second end part 12 and a connecting part 13, wherein one end of the first end part 11 is connected with one end of the connecting part 13, the other end of the connecting part 13 is connected with one end of the second end part 12, and the connecting part 13 is of an inclined ladder-shaped structure.
The printed circuit board of this embodiment sets up a plurality of golden fingers, and this golden finger sets up metal structure on insulating medium layer, and the junction of this metal structure's first tip and second tip sets up the trapezoid structure to one side, and this trapezoid structure can effectively reduce the resistance when golden finger plug for golden finger on the printed circuit board becomes comparatively easy when inserting with outside slot.
Further, the connecting portion 13 of the inclined trapezoid structure has an inclined plane with an inclination angle smaller than 90 degrees, and the inclined plane with the inclination angle smaller than 90 degrees connects the thicker first end portion 11 and the thinner second end portion 12 in a smoother transition manner, so that the resistance of the printed circuit board during plugging is reduced; preferably, the inclination angle is selected to be 45 °.
Further, referring to fig. 2, the inclined surface of the trapezoid connecting portion 13 is a plane, which on one hand makes a smooth transition between the first end portion 11 and the second end portion 12, and on the other hand can reduce resistance when the printed circuit board is inserted and removed.
Further, referring to fig. 3, the inclined surface of the trapezoid connecting portion 13 is a concave surface with a circular arc shape, and the concave surface with a circular arc shape makes a smooth transition between the first end portion 11 and the second end portion 12 on one hand, and on the other hand, can reduce resistance when the printed circuit board is plugged in and plugged out.
Further, referring to fig. 2, the thickness of the first end 11 is greater than that of the second end 12, and the two ends are different in thickness, so that the overall structure of the golden finger is in a step shape.
Further, the thickness of the second end 12 is smaller than 15 μm, and preferably, the thickness of the second end 12 may be set to 12 μm, which can ensure that the existing processing process is smooth on the one hand, and that the thickness of the gold finger is not too thick on the other hand.
Further, the length of the second end 12 is in the range of 0.2mm to 0.4mm, and preferably, the length of the second end 12 may be set to 0.3mm; the length of the second end 12 can also be adjusted to any size according to actual design requirements.
Further, the thickness of the insulating medium layer 2 is in the range of 0.2mm-0.3mm, and as a preferable scheme, the thickness of the insulating medium layer can be set to be 0.25mm; the insulating dielectric layer 2 can perform an insulating function to prevent the golden finger from being connected with other conductive structures on the substrate 100 to cause short circuit.
Further, referring to fig. 2, the insulating medium layer 2 extends out of the second end 12 by a preset distance to provide a larger insulating area for the metal structure 1; the insulating medium layer 2 extends out of the inclined plane 21 with a preset angle at one side of the second end 12, and the inclined plane 21 with the preset angle can also reduce the resistance when the printed circuit board is plugged in or plugged out; preferably, the preset angle may be set to 45 °.
Further, referring to fig. 2, the golden finger further includes a dry film protection layer 3, the dry film protection layer 3 is located on the upper surface of the first end 11, the thickness of the dry film protection layer 3 ranges from 30 μm to 50 μm, and preferably, the thickness of the dry film protection layer 3 may be set to 40 μm; when the inclined ladder golden finger is manufactured by adopting a local microetching process, the dry film protective layer 3 can play a role in protecting and preventing the first end part 11 from microetching; the dry film protective layer 3 also isolates the first end 11 from air, retarding oxidation of the first end 11.
The printed circuit board of this embodiment has the following characteristics:
(1) The connection part of the first end part and the second end part of the metal structure on the printed circuit board is provided with the inclined trapezoid structure, and the inclined trapezoid structure can effectively reduce the resistance when the golden finger is plugged and pulled out, so that the golden finger on the printed circuit board is easier to plug and pull out with an external slot.
(2) An insulating medium layer is arranged and can play an insulating role to prevent the golden finger from being connected with other conductive structures on the substrate to generate short circuit.
(3) The dry film protective layer is arranged, and can play a role in protecting when the inclined ladder golden finger is manufactured by adopting a local microetching process, so that the first end part is prevented from being microetched; the dry film protective layer also can isolate the first end from air, delaying oxidation of the first end.
(4) The end part of the insulating medium layer is provided with an inclined plane with a preset angle, so that the resistance of the printed circuit board during plugging can be further reduced.
(5) The printed circuit board product with golden fingers which is formed in batches does not need to be changed greatly, and the stepped golden fingers can be obtained only by slightly changing the top ends of the original thicker golden fingers, so that the resistance of the printed circuit board during plugging is reduced.
In one embodiment, an electronic device is provided, the electronic device comprising: electronic components such as an ARM chip, a resistive-capacitive component, and a semiconductor switching device are soldered to the printed circuit board in the above-described embodiment to constitute an electronic apparatus.
The printed circuit board in the embodiment is adopted in the electronic equipment of the embodiment, the printed circuit board is provided with the inclined trapezoid golden finger, the golden finger is provided with the metal structure on the insulating medium layer, the connecting part of the first end part and the second end part of the metal structure is provided with the inclined trapezoid structure, and the inclined trapezoid structure can effectively reduce the resistance when the golden finger is plugged and pulled, so that the electronic equipment on the printed circuit board and the slot on the external circuit board are easier to plug and pull.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (10)
1. A printed circuit board, comprising:
the device comprises a substrate and a plurality of golden fingers arranged on the substrate, wherein each golden finger comprises an insulating medium layer arranged on the substrate and a metal structure arranged on the insulating medium layer;
the metal structure comprises: the connecting device comprises a first end part, a second end part and a connecting part, wherein one end of the first end part is connected with one end of the connecting part, the other end of the connecting part is connected with one end of the second end part, and the connecting part is of an inclined ladder-shaped structure.
2. The printed circuit board of claim 1, wherein the ramp-like structure has a bevel with an inclination angle of less than 90 °.
3. The printed circuit board of claim 2, wherein the bevel is a planar or circular arc concave surface.
4. The printed circuit board of claim 1, wherein the thickness of the second end portion is less than 15 μιη.
5. The printed circuit board of claim 1, wherein the second end has a length in the range of 0.2mm to 0.4mm.
6. The printed circuit board of claim 1, wherein a thickness of the first end is greater than a thickness of the second end.
7. The printed circuit board of claim 1, wherein the gold finger further comprises: and the dry film protective layer is positioned on the upper surface of the first end part, and the thickness of the dry film protective layer ranges from 30 mu m to 50 mu m.
8. The printed circuit board of claim 1, wherein the insulating dielectric layer has a thickness in the range of 0.2mm to 0.3mm.
9. The printed circuit board of claim 1, wherein the insulating dielectric layer extends a predetermined distance beyond the second end and a side of the insulating dielectric layer extending beyond the second end is beveled at a predetermined angle.
10. An electronic device comprising an electronic component soldered to the printed circuit board of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041731.5U CN219248182U (en) | 2023-01-06 | 2023-01-06 | Printed circuit board and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041731.5U CN219248182U (en) | 2023-01-06 | 2023-01-06 | Printed circuit board and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219248182U true CN219248182U (en) | 2023-06-23 |
Family
ID=86845245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320041731.5U Active CN219248182U (en) | 2023-01-06 | 2023-01-06 | Printed circuit board and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219248182U (en) |
-
2023
- 2023-01-06 CN CN202320041731.5U patent/CN219248182U/en active Active
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