TWI848715B - Connector and connecting finger - Google Patents

Abstract

A connector and a connecting finger are provided. The connecting finger can be used to be fixed on a substrate through a conductive body. The connecting finger includes a cylindrical body, at least one vent channel, and an annular groove. The cylindrical body has a height direction. The cylindrical body includes a bottom surface and a top surface opposite to each other, and an annular side surface that is connected to the bottom surface and the top surface. The bottom surface can be used to contact the substrate. The vent channel is disposed on the top surface. Two ports of the vent channel are respectively connected to two sides of the annular side surface. The annular groove is disposed on the annular side surface and is adjacent to the bottom surface. A portion of the annular groove communicates with the two ports along the height direction. The vent channel and the annular groove can be used to be filled with the conductive body, so that the conductive body is integrally attached to the local part of the substrate and the gold finger without contacting the top surface.

Description

Connectors and Gold Fingers

The present invention relates to a connector and a gold finger, and in particular to a connector and a gold finger with high reliability.

Most existing connectors include a circuit board, a gold finger, and a solder. The gold finger is cylindrical and is soldered to the circuit board through the solder, so that the gold finger is electrically coupled to the circuit board. However, although the gold finger and the circuit board of the existing connector are fixed by the solder, bubbles are often mixed into the solder during the process of changing from liquid to solid, resulting in holes, which causes the gold finger to separate from the circuit board or the gold finger is not completely electrically coupled to the circuit board, that is, the reliability of the existing connector is poor.

Therefore, the inventors of the present invention believe that the above defects can be improved, and have conducted intensive research and applied scientific principles to finally propose the present invention which has a reasonable design and effectively improves the above defects.

The technical problem to be solved by the present invention is to provide a connector and a gold finger to address the deficiencies of the prior art.

The embodiment of the present invention discloses a connector, comprising: a substrate; a gold finger, arranged on the substrate, the gold finger comprising: a cylindrical body, having a height direction, the cylindrical body comprising a bottom surface and a top surface opposite to each other, and an annular side surface connecting the bottom surface and the top surface, the bottom surface facing the substrate; at least one escape channel, arranged on the top surface, the two ports of the at least one escape channel are respectively connected to the two sides of the annular side surface; and an annular groove, arranged on the annular side surface and adjacent to the bottom surface, the part of the annular groove is connected to the two ports along the height direction; and a conductor, integrally attached to the substrate and the part of the gold finger, the conductor fills the at least one escape channel and the annular groove, and the conductor does not contact the top surface.

The embodiment of the present invention also discloses a gold finger that can be used to be fixed on a substrate through a conductor, and the gold finger includes: a cylindrical body having a height direction, the cylindrical body including a bottom surface and a top surface opposite to each other, and an annular side surface connecting the bottom surface and the top surface, and the bottom surface can be used to contact the substrate; at least one escape channel is arranged on the top surface, and two ports of the at least one escape channel are respectively connected to the two sides of the annular side surface; and an annular groove is arranged on the annular side surface and adjacent to the bottom surface, and a part of the annular groove is connected to the two ports along the height direction; wherein the at least one escape channel and the annular groove can be used to be filled with the conductor, so that the conductor is integrally attached to the substrate and a part of the gold finger without contacting the top surface.

In summary, the connector and gold finger disclosed in the embodiments of the present invention can improve reliability by adopting the designs of "the two ports of the at least one air escape channel are respectively connected to the two sides of the annular side surface, and the part of the annular groove is connected to the two ports along the height direction", and "the conductor is integrally attached to the substrate and the part of the gold finger, and the conductor fills the at least one air escape channel and the annular groove". This allows the connector to avoid the generation of holes in the process of integrally attaching the conductor (e.g., solder) to the substrate and the gold finger.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only used for reference and description and are not used to limit the present invention.

The following is a specific embodiment to illustrate the implementation of the "connector and gold finger" disclosed in the present invention. Technical personnel in this field can understand the advantages and effects of the present invention from the content disclosed in this manual. The present invention can be implemented or applied through other different specific embodiments. The details in this manual can also be modified and changed based on different viewpoints and applications without deviating from the concept of the present invention. In addition, the drawings of the present invention are only for simple schematic illustrations and are not depicted according to actual sizes. Please note in advance. The following implementation will further explain the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

It should be understood that, although the terms "first", "second", "third", etc. may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used in this document may include any one or more combinations of the related listed items depending on the actual situation.

In addition, in the following description, if it is indicated to refer to a specific figure or as shown in a specific figure, it is only used to emphasize that most of the related content described in the subsequent description appears in the specific figure, but it does not limit the subsequent description to only refer to the specific figure.

1 to 10 , the present embodiment provides a connector 100. As shown in FIG1 and FIG2 , the connector 100 includes a substrate 1, a gold finger 2A disposed on the substrate 1, and a conductive body 3 (eg, solder) attached to the substrate 1 and the gold finger 2A.

It should be noted that, although the substrate 1, the gold finger 2A, and the conductor 3 are collectively defined as the connector 100 in this embodiment, the present invention is not limited thereto. For example, the gold finger 2A can also be used alone (e.g., implemented, manufactured, sold, etc.) or used in conjunction with other components. The following will introduce the structure of each component of the connector 100, and explain the connection relationship between each component of the connector 100 as appropriate.

Referring again to FIG. 1 and FIG. 2 , the substrate 1 is a printed circuit board in this embodiment, and the substrate 1 is substantially rectangular, but the present invention is not limited thereto. The substrate 1 can be electrically connected to an external electronic device (not shown) through the gold finger 2A. The gold finger 2A includes a cylindrical body 21, two air escape channels 22, and an annular groove 23.

Specifically, as shown in FIGS. 2 to 4 , the cylindrical body 21 in this embodiment can be any conductive material (e.g., a copper column), and the cylindrical body 21 has a height direction D1 and a radial direction D2 perpendicular to the height direction D1. The cylindrical body 21 includes a bottom surface S211 and a top surface S212 opposite to each other, and an annular side surface S213 connecting the bottom surface S211 and the top surface S212.

The cylindrical body 21 is arranged with the bottom surface S211 facing the substrate 1, that is, the bottom surface S211 (electrically) contacts the substrate 1, and the top surface S212 is away from the substrate 1, and the top surface S212 and a portion of the annular side surface S213 adjacent to the top surface S212 can be used to (electrically) contact the external electronic device.

In practice, the cylindrical body 21 may further include a chamfered surface between the top surface S212 and the annular side surface S213, so that the external electronic device can more easily contact the top surface S212 and the portion of the annular side surface S213 adjacent to the top surface S212.

Referring again to FIGS. 4 to 6 , the two gas escape channels 22 are disposed on the top surface S212, and the two gas escape channels 22 can allow the liquid conductor 3 and air to pass through, thereby being filled with the conductor 3 (as shown in FIG. 2 ). In this embodiment, the two gas escape channels 22 can pass through the center of the cylindrical body 21, so that the two gas escape channels 22 are interconnected and have a 90-degree angle θ, but the present invention is not limited thereto. For example, in other embodiments of the present invention that are not shown, the two gas escape channels 22 may not pass through the center of the cylindrical body 21, and there is no angle between the two gas escape channels 22 (that is, the two gas escape channels 22 are not interconnected).

Furthermore, each of the gas escape passages 22 has two opposite ports (not shown), and the two ports can be respectively connected to the two sides of the annular side surface S213 to serve as an inlet and an outlet for gas escape.

In practical applications, the cross-sectional shape of each of the gas escape channels 22 along the radial direction D2 can be designed. For example, as shown in FIGS. 4 to 6 , the width W22 of each of the gas escape channels 22 along the radial direction D2 may not have any change, so that the cross-sectional shape of each of the gas escape channels 22 is substantially rectangular.

For another example, as shown in FIG. 7 and FIG. 8 , the width (not shown) of each of the gas escape channels 22 of the gold fingers 2B and 2C may be gradually narrowed along the radial direction D2 toward the center of the cylindrical body 21, so that each of the gas escape channels 22 is "narrow in the middle and wide on both sides". Accordingly, when the liquid conductor 3 or air moves from the inlet to the outlet of one of the gas escape channels 22, the center (i.e., the narrow part) of the gas escape channel 22 will generate a negative pressure to attract the air or the liquid conductor 3 in the other gas escape channel 22, so that the flow speeds in the two gas escape channels 22 can be consistent to ensure that the conductor 3 can evenly fill the two gas escape channels 22.

For another example, as shown in FIG. 9 and FIG. 10 , the cross-sectional shape of each of the escape channels 22 of the gold fingers 2D and 2E along the radial direction D2 is designed to be sawtooth or wavy, thereby increasing the area of the inner surface of the two escape channels 22 contacted by the conductor 3 .

As shown in FIG. 2 and FIG. 5 , the annular groove 23 is disposed on the annular side surface S213 and adjacent to the bottom surface S211, so that the annular groove 23 can serve as a crawling path for the liquid conductor 3. From the direction in FIG. 5 , the annular groove 23 is located at the lower side of the annular side surface S213, and the cylindrical body 21 is divided into an upper pier portion UP and a lower pier portion DP by the annular groove 23. The height HUP of the upper pier portion UP is greater than the height HDP of the lower pier portion DP, and the upper pier portion UP is used to contact the external electronic device. The lower pier portion DP is penetrated by the two ports of each of the escape channels 22 in the height direction D1, so that a part of the annular groove 23 can be connected to the two ports of each of the escape channels 22 along the height direction D1, thereby enabling the lower pier portion DP and the annular groove 23 to serve as an attachment area for the liquid conductor 3.

In other words, each of the gas escape channels 22 , the annular groove 23 , and each of the gas escape channels 22 will be filled with the conductive body 3 , so that the cylindrical body 21 below the annular groove 23 is covered by the conductive body 3 , thereby fixing the gold finger 2A on the substrate 1 .

It should be noted that when the width W23 of the annular groove 23 is too wide, the adhesion of the liquid conductor 3 will be insufficient, so that the conductor 3 cannot adhere to the annular groove 23. Therefore, the width W23 of the annular groove 23 is preferably between 25% and 35% of the height H21 of the cylindrical body 21, so that the liquid conductor 3 can be attached to the annular groove 23 with the largest area. The actual size of the width W23 of the annular groove 23 is preferably not more than 0.4 mm.

In addition, to ensure that the liquid conductor 3 can crawl smoothly, the position of a bottom edge S23 of the annular groove 23 in the height direction D1 is preferably between 10% and 20% of the height of the cylindrical body 21, and the depth L23 of the annular groove 23 is between 70% and 80% of the thickness of the cylindrical body 21. The actual position of the bottom edge S23 of the annular groove 23 is preferably not more than 0.3 mm, and the actual size of the depth L23 of the annular groove 23 is preferably not more than 0.15 mm.

That is, when the cylindrical body 21 defines the positional relationship along the height direction D1 with the substrate 1 as the starting surface, the bottom surface S211 can be regarded as the 0% position, and the top surface S212 can be regarded as the 100% position, and the bottom edge S23 of the annular groove 23 is located between 10% and 20%. Assuming that the actual height of the bottom edge S23 is 0.2 mm, the depth L23 of the annular groove 23 can be between 0.14 mm and 0.15 mm.

It should be noted that the gold finger 2A of the present invention is illustrated as having two escape channels 22 in this embodiment, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the gold finger 2A may also have only one escape channel 22. In other words, the gold finger 2A may include at least one escape channel 22.

[Technical Effects of the Embodiments of the Invention]

In summary, the connector and gold finger disclosed in the embodiments of the present invention can improve reliability by adopting the designs of "the two ports of the at least one air escape channel are respectively connected to the two sides of the annular side surface, and the part of the annular groove is connected to the two ports along the height direction", and "the conductor is integrally attached to the substrate and the part of the gold finger, and the conductor fills the at least one air escape channel and the annular groove". This allows the connector to avoid the generation of holes in the process of integrally attaching the conductor (e.g., solder) to the substrate and the gold finger.

The contents disclosed above are only preferred feasible embodiments of the present invention and are not intended to limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the specification and drawings of the present invention are included in the scope of the patent application of the present invention.

100: Connector 1: Substrate 2A~2E: Gold finger 21: Cylindrical body S211: Bottom S212: Top S213: Circumferential side 22: Escape channel 23: Circumferential groove 3: Conductor D1: Height direction D2: Radial direction UP: Upper pier part DP: Lower pier part W22, W23: Width L23: Depth S23: Bottom edge HUP, HDP, H21: Height θ: Angle

FIG1 is a three-dimensional schematic diagram of a connector of the present invention.

FIG. 2 is a side view schematic diagram of the connector of the present invention.

FIG. 3 is a three-dimensional schematic diagram of the gold finger of the present invention.

FIG. 4 is another three-dimensional schematic diagram of the gold finger of the present invention.

FIG. 5 is a side view schematic diagram of the gold finger of the present invention.

FIG. 6 is a bottom view of the gold finger of the present invention.

FIG. 7 is a bottom view of the gold finger of the present invention in another state.

FIG. 8 is a bottom view of the gold finger of the present invention in another state.

FIG. 9 is a bottom view of the gold finger of the present invention in another state.

FIG. 10 is a bottom view of the gold finger of the present invention in yet another state.

2A: Gold Finger

21: Cylindrical body

S211: Bottom

S212: Top surface

S213: Side of the ring

22: Escape channel

23: Ring groove

D1: Height direction

D2: radial direction

UP: upper part

DP: Lower pier position

Claims (10)

A connector comprises: a substrate; a gold finger arranged on the substrate, the gold finger comprising: a cylindrical body having a height direction, the cylindrical body comprising a bottom surface and a top surface opposite to each other, and an annular side surface connecting the bottom surface and the top surface, the bottom surface facing the substrate; at least one escape channel arranged on the bottom surface, two ports of the at least one escape channel respectively connected to two sides of the annular side surface; and an annular groove arranged on the annular side surface and adjacent to the bottom surface, the The part of the annular groove connects the two ports along the height direction; and a conductor is integrally attached to the substrate and the part of the gold finger, the conductor fills the at least one escape channel and the annular groove, and the conductor does not contact the top surface; wherein the cylindrical body is separated into an upper pier part and a lower pier part by the annular groove, the height of the upper pier part is greater than the height of the lower pier part, and the lower pier part and the annular groove can serve as an attachment area of the conductor. A connector as described in claim 1, wherein the cylindrical body has a radial direction perpendicular to the height direction, and the cross-sectional shape of the at least one escape channel along the radial direction is sawtooth or wavy. A connector as described in claim 1, wherein the cylindrical body has a radial direction perpendicular to the height direction, and the width of the at least one escape channel changes gradually along the radial direction toward the center of the cylindrical body. A connector as described in claim 1, wherein the cylindrical body has a radial direction perpendicular to the height direction, and the width of the at least one escape channel does not vary along the radial direction. A connector as described in any one of claims 1 to 4, wherein the number of the at least one escape channel is further limited to two, and there is a 90-degree angle between the two escape channels. A connector as described in any one of claims 1 to 4, wherein the number of the at least one escape channel is further limited to one, and the escape channel passes through the center of the cylindrical body. A connector as described in claim 1, wherein the width of the annular groove is between 25% and 35% of the height of the cylindrical body. A connector as claimed in claim 1, wherein a bottom edge of the annular groove is located between 10% and 20% of the height of the cylindrical body in the height direction, and a depth of the annular groove is located between 70% and 80% of the thickness of the cylindrical body at the bottom edge. A connector as described in claim 1, wherein the width of the annular groove is greater than the width of each of the ports and less than 55% of the thickness of the cylindrical body. A gold finger can be used to be fixed on a substrate through a conductor, the gold finger comprises: a cylindrical body having a height direction, the cylindrical body comprising a bottom surface and a top surface opposite to each other, and an annular side surface connecting the bottom surface and the top surface, the bottom surface can be used to contact the substrate; at least one escape channel is arranged on the bottom surface, and two ports of the at least one escape channel are respectively connected to the two sides of the annular side surface; and an annular groove is arranged on the annular side surface and adjacent to the bottom surface, The part of the annular groove is connected to the two ports along the height direction; wherein the at least one escape channel and the annular groove can be filled with the conductor, so that the conductor is integrally attached to the substrate and the part of the gold finger without contacting the top surface; wherein the cylindrical body is separated into an upper pier part and a lower pier part by the annular groove, the height of the upper pier part is greater than the height of the lower pier part, and the lower pier part and the annular groove can serve as an attachment area of the conductor.

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