Patent Grant
8651897
The present invention relates generally to computing devices and more particularly to a USB device utilized with such computing devices.
The USB host and device are ubiquitous in computing devices including PC, Notebook, Server, Tablet PC, smart TV, media player, gaming machine and peripheral devices. USB3.0 (USB3) interface standard is introduced as the successor to the ever successful USB2.0 (USB2) interface standard. USB3 is aimed to deliver 10 times the performance while maintaining the backward compatibility with USB2. A USB3 device connector traditionally has a total of nine external interface pins, with one row of four and one row of five pins, connecting to a USB3 device through surface mount technology (SMT) or through hole technology. The physical dimension of the USB3 device connector therefore adds length to the size of the USB3 device. If the USB3 device can extend the body of the USB3 device to where the front edge of the USB3 device connector is and achieve the functionality of the USB3 device connector in its main body, it not only eliminates the need for a physical USB3 device connector and saves cost, but also accommodates more real estate or space for the circuitry inside the USB3 device. The challenge lies in how to effectively achieve the functionality of a USB3 device connector in the main body of the USB device.
The USB3 host connector introduces five more pins in addition to the original four pins of USB2 host connector. Most USB3 devices require a USB3 device connector that is soldered to a substrate or a PCB in order to securely mate to the USB3 host connector or the USB2 host connector. The two rows of four pins and five pins in the USB3 device connector are mated to the two rows of four pins and five pins correspondingly, in the USB3 host connector. In the case of the USB2 host connector, only the outer row of 4 pins is used in the USB3 device connection to connect. In the situation where the USB3 flash storage device is pre-fabricated in the molding process, the additional reflow soldering process of the USB3 device connector not only complicates the manufacturing but also introduces a low yield to the flash storage in the pre-fabricated USB device.
It is therefore advantageous to come up with a solderless USB3 connector and apparatus for the USB device to eliminate the soldering reflow, simplify the manufacturing process and to increase the yield of the USB3 device.
The physical difference between USB2 and USB3 host connectors is depicted in
As shown in
As shown in
A USB3 device connector 114 has a top casing 104, a bottom casing 105, a main body 107, an optional stopper 108 and four interface pins (not shown) in the outer row and five interface pins (not shown) in the inner row. One of the pins 106 in the USB3 device connector 114 is shown in a cross section view. The pin 106 will not recede when the USB3 device connector 114 is plugged into the USB3 host connector 113. Its counterpart 103 on USB3 host connector 113 will recede and connect to pin 106 when the USB3 device connector 114 is fully plugged into the USB3 host connector 113. One of the pins 109 in the USB3 device connector 114 is shown in a cross section view. The pin 110 in the USB3 host connector 113 will not recede when the USB3 device connector 114 is plugged into the USB3 host connector 113. Its counterpart pin 109 in the USB3 device connector 114 will recede and connect to pin 110 when the USB3 device connector 114 is fully plugged into the USB3 host connector 113.
When the USB3 device connector 114 is fully plugged into the USB2 host connector 111, the pin 106 of the USB3 device connector 114 is connected to the pin 13 of the USB2 host connector 111. The pin 109 in the USB3 device connector 114 will recede and will not make contact with any other pin in the USB2 host connector 111.
As shown in
The main body 27 houses four interface pins (not shown) in the first row and five interface pins (not shown) in the fourth. Two of the pins 26 (in the first row) and 23 (in the fourth row) on the USB3 device main body 27 are shown in a cross section view.
The surface mountable sub-body 21 houses five interface pins (not shown) in the second row and five interface pins (not shown) in the third row. The second row pins and the third row pins are connected in pairs internally inside the sub-body 21. Two of the pins 20 (in the second row) and 22 (in the third row) in the USB3 sub-body 21 are shown in a cross section view. Pin 20 and pin 22 are connected internally inside USB3 sub-body 21.
The pin 26 will not recede when the USB3 device 220 is plugged into the USB3 host connector 113. Its counterpart 103 in USB3 host connector 113 will recede and connect to pin 26 when the USB3 device 220 is fully plugged into the USB3 host connector 113.
The pin 110 in USB3 host connector 113 will not recede when the USB3 device 220 is plugged into the USB3 host connector 113. Its counterpart pin 20 on USB3 sub-body 21 will also not recede but will also connect to pin 110 when the USB3 device 220 is fully plugged into the USB3 host connector 113. The reason pin 20 will not recede is that the sub-body 21 and the main body 27 are two separate rigid pieces. There is no room for pin 20 to recede when the USB3 device 220 is plugged into the USB3 host connector 113.
This embodiment achieves the benefits of eliminating an external USB3 device connector and accommodates more real estate or space for the circuitry inside the USB3 device. But it still requires soldering of the USB3 device sub-body 21 to the main body 27. And because the pin 20 would not recede after the USB3 device 220 is plugged into the USB3 host connector 113, it sustains stress to the structure of the pin. The impedance of the contact between pin 20 in USB3 device 220 and pin 110 in USB3 host connector starts to change as time progressing. The contact eventually becomes unstable and unreliable.
The embodiment as shown in
As shown in
The main body 207 houses four interface pins (not shown) in the first row and five interface pins (not shown) in the fourth row. Two of the pins 206 (in the first row) and 203 (in the third row) in the USB3 main body 207 are shown in a cross section view.
The detachable sub-body 201 houses five interface pins (not shown) in the second row and five interface pins (not shown) in the third row. The second row pins and the third row pins are connected in pairs internally inside the sub-body 201. Two of the pins 200 (in the second row) and 202 (in the fourth row) in the USB3 sub-body 201 are shown in a cross section view. Pin 200 and pin 202 are connected internally inside USB3 sub-body 201.
The pin 206 will not recede when the USB3 device 221 is plugged into the USB3 host connector 113. Its counterpart 103 in USB3 host connector 113 will recede and will connect to pin 206 when the USB3 device 221 is fully plugged into the USB3 host connector 113.
The pin 110 in USB3 host connector 113 will not recede when the USB3 device 221 is plugged into the USB3 host connector 113. Its counterpart pin 200 on USB3 sub-body 201 also will not recede but will still connect to pin 110 when the USB3 device 221 is fully plugged into the USB3 host connector 113. The reason pin 200 will not recede is that the sub-body 201 and the main body 207 are two separate rigid pieces. There is no room for pin 200 to recede when the USB3 device 221 is plugged into the USB3 host connector 113.
This prior art achieves the benefits of eliminating an external USB3 device connector and accommodates more real estate or space for the circuitry inside the USB3 device. It also eliminates soldering of the USB3 device sub-body 201 to the main body 207. But because the pin 200 would not recede after the USB3 device 221 is plugged into the USB3 host connector 113, it sustains stress to the structure of the pin. The impedance of the contact between pin 200 in USB3 device 221 and pin 110 in USB3 host connector starts to change as time progresses. The contact eventually becomes unstable and unreliable. The contact between pin 202 in the USB3 sub-body and pin 203 in the USB3 main body would also become unstable and unreliable, due to the constant stress pressing between the pair of pins. The contact may also be weakened by the lever effect asserted by the force pressing against pin 200 when the USB3 device 221 is plugged into the USB3 host connector 113.
Another prior art, as shown in
As shown in
The main body 217 houses four interface pins (not shown) in the first row and five interface pins (not shown) in the fourth row. Two of the pins 216 (in the first row) and 213 (in the third row) on the USB3 main body 217 are shown in a cross section view.
The detachable sub-body 211 houses five interface pins (not shown) in the second row. One of the pins 210 (in the second row) on the USB3 sub-body 211 is shown in a cross section view.
The pin 216 will not recede when the USB3 device 222 is plugged into the USB3 host connector 113. Its counterpart 103 in USB3 host connector 113 will recede and connect to pin 216 when the USB3 device 222 is fully plugged into the USB3 host connector 113.
The pin 110 in USB3 host connector 113 will not recede when the USB3 device 222 is plugged into the USB3 host connector 113. Its counterpart pin 210 on USB3 sub-body 211 also will not recede but will still connect to pin 110 when the USB3 device 222 is fully plugged into the USB3 host connector 113. The reason pin 210 will not recede is that the sub-body 211 and the main body 217 are two separate rigid pieces. There is no room for pin 210 to recede when the USB3 device 222 is plugged into the USB3 host connector 113.
This embodiment achieves the benefits of eliminating an external USB3 device connector and accommodates more real estate or space for the circuitry inside the USB3 device. It also eliminates soldering of the USB3 device sub-body 211 to the main body 217. But because the pin 210 would not recede after the USB3 device 222 is plugged into the USB3 host connector 113, it sustains stress to the structure of the pin. The impedance of the contact between pin 210 in USB3 device 222 and pin 110 in USB3 host connector starts to change as time progresses. The contact eventually becomes unstable and unreliable. The contact between pin 210 in the USB3 sub-body and pin 213 in the USB3 main body would also become unstable and unreliable due to the constant stress pressing between the pair of pins.
Accordingly, what is desired is to provide a system and method that overcomes the above issues. The present invention addresses such a need.
A first objective of the invention is to achieve the benefits of eliminating an external USB3 device connector and to accommodate more real estate or space for the circuitry inside the USB3 device.
A second objective is make the manufacturing process simple and to save cost by eliminating soldering of the USB3 device sub-body to the main body.
A third objective is to make the contact mechanism between the USB3 host connector and the USB3 device simple and therefore effectively result in saving the USB3 device cost.
A fourth objective of the invention is to reduce or eliminate the constant stress on any contact pins between the USB3 device and the USB3 host connector and therefore extend the reliability of the device and host connector.
The present invention includes a USB3 device with solderless USB3 connector interfaces, which comprises: a USB3 device main body that houses a carrier body made of rigid material; four interface pins in the outer row that conform to the USB2.0 standard; five interface pins in the inner row that conform to the USB3.0 standard; and a substrate and electronic circuitry; and a USB3 device sub-body that houses: a carrier body made of rigid material; and five interface pins that conform to the USB3.0 standard wherein each interface pin has an upper convex part and a lower concave part; the upper convex part and the lower concave part forms a spring coil pin; and the spring coil pin can withstand multiple times of compression; a top casing; a bottom casing; and a case assembly.
Other aspects and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
The present invention relates generally to computing devices and more particularly to USB devices utilized with such computing devices. The following description is presented to enable one of ordinary skill in the art to make and use the invention and is provided in the context of a patent application and its requirements. Various modifications to the preferred embodiment and the generic principles and features described herein will be readily apparent to those skilled in the art. Thus, the present invention is not intended to be limited to the embodiment shown but is to be accorded the widest scope consistent with the principles and features described herein.
As shown in
As shown in
The main body 37 houses four interface pins (not shown) in the first row and five interface pins (not shown) in the fourth row. Two of the pins 36 (in the first row) and 33 (in the third row) on the USB3 main body 37 are shown in a cross section view.
The detachable sub-body 31 houses five interface pins (not shown) in the second row. One of the pins 30 (in the second row) on the USB3 sub-body 31 is shown in a cross section view.
The pin 36 will not recede when the USB3 device 300 is plugged into the USB3 host connector 113. Its counterpart 103 in USB3 host connector 113 will recede and connect to pin 36 when the USB3 device 300 is fully plugged into the USB3 host connector 113.
The pin 110 in USB3 host connector 113 will not recede when the USB3 device 300 is plugged into the USB3 host connector 113. Its counterpart pin 30 on USB3 sub-body 31 will recede and connect to pin 110 in the USB3 host connector 113 when the USB3 device 300 is fully plugged into the USB3 host connector 113. The reason pin 30 will recede is that pin 30 has a spring coil effect and can be compressed when pressed by the USB3 host connector 113, as shown in
By implementing the first row of four pins and the third row of five pins in the USB3 device 300, the invention achieves the first objective of eliminating an external USB3 device connector and accommodates more real estate or space for the circuitry inside the USB3 device. By introducing the stacked sub-body 31 on top of the main body 37 in the USB3 device, it also eliminates soldering of the USB3 device sub-body 31 to the main body 37 and achieves the second objective of the invention.
Pin 30 on the USB3 device sub-body 31 serves the purpose of connecting between the pin 33 (in the third row) of USB3 device main body 37 and pin 110 in the outer row of USB3 host connector 113. As shown in
Before the insertion or after unplugging of the USB3 device 300 into/from the USB3 host connector 113, the upper convex part and the lower concave part of the pin 30 remain free and do not touch any other part of the USB3 device 300 or USB3 host connector 113. The spring coil design of the pin 30 is able to compress and rebound to its original state without incurring constant stress on any other part of the USB3 device 300 or USB3 host connector 113. It therefore achieves the fourth objective of this invention by reducing or eliminating the constant stress on any contact pins between the USB3 device and the USB3 host connector, thereby extending the reliability of the device and host connector.
As shown in
The main body 57 houses four interface pins (not shown) in the first row and five interface pins (not shown) in the fourth row. Two of the pins 56 (in the first row) and 53 (in the third row) on the USB3 device main body 57 are shown in a cross section view. The groove 58, in a recess area of the main body 57, accommodates the five interface pins including pin 53.
The detachable sub-body 51 houses five interface pins (not shown) in the second row. One of the pins 50 (in the second row) on the USB3 device sub-body 51 is shown in a cross section view. The pin 50 has at least an upper convex part and a lower convex part that form a spring coil.
In order to let the spring coil formed by the upper convex part and the lower concave part of the pin 50 to have more room to compress and rebound, it may be beneficial to have a groove 58 in the main body 57 of the USB3 device 500. It will further enhance the fourth objective of this invention by reducing or eliminating the permanent stress on any contact pins between the USB3 device and the USB3 host connector and therefore extending the reliability of the device and host connector. The cross section view of the groove 58 is shown in
As shown in
The main body 77 houses four interface pins (not shown) in the first row and five interface pins (not shown) in the fourth row. Two of the pins 76 (in the first row) and 73 (in the third row) on the USB3 device main body 77 are shown in cross section view.
The detachable sub-body 71 houses five interface pins (not shown) in the second row. One of the pins 70 (in the second row) on the USB3 device sub-body 71 is shown in cross section view. The pin 70 has at least an upper convex part and a lower concave part that form a spring coil. This is an alternative embodiment that has a convex head pin in the upper convex part.
As shown in
The main body 97 houses four interface pins (not shown) in the first row and five interface pins (not shown) in the fourth row. Two of the pins 96 (in the first row) and 93 (in the third row) on the USB3 device main body 97 are shown in cross section view.
The detachable sub-body 91 houses five interface pins (not shown) in the second row. One of the pins 90 (in the second row) on the USB3 device sub-body 91 is shown in cross section view. The pin 90 has at least an upper convex part and a lower concave part that form a spring coil. This is an alternative embodiment that has a concave contact tip in the lower concave part.
Although the present invention has been described in accordance with the embodiments shown, one of ordinary skill in the art will readily recognize that there could be variations to the embodiments and those variations would be within the spirit and scope of the present invention. Accordingly, many modifications may be made by one of ordinary skill in the art without departing from the spirit and scope of the appended claims.
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| Number | Date | Country | |
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| 20130337701 A1 | Dec 2013 | US |
