PCIe SAS direct link cable

A PCIe SAS direct link connector includes a cable end and a back board; the cable end fixed on the back board and including a direct link female head, a high-speed line, and a 15pin plug terminal; the back board including a primary and a secondary cavity position; the direct link female head connected with the high-speed line; the 15pin plug terminal being an asymmetric bow shape and having a short and a long side, a first contact point disposed on the short side, and a second contact point disposed on the long side; the 15pin plug terminal connected with the high-speed line; when the 15pin plug terminal is combined with a server board end connector, the first contact point and the second contact point contact a terminal of the server board end connector, respectively, simplifying the connection structure and improving heat dissipation.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to high-speed connectors, and more particularly, to a PCIe SAS direct link cable.

2. Description of the Related Art

Currently, a conventional vertical SAS/SATA/PSAS female head is mainly applied for high-speed transmission between a server solid-state disk (SSD) and the motherboard. The relatively complicated and over-concentrated structure thereof causes a high manufacturing cost and a poor heat dissipation performance.

FIG.3illustrates pinout uses of a conventional SAS/SATA/PSAS connector according to industry standard SFF-8639 Specification Rev 2.1 published by Storage Networking Industry Association (SNIA). As illustrated, the terminals of the conventional SAS/SATA/PSAS connector have a double row configuration.FIG.4Aillustrates a conventional SAS/SATA/PSAS female cable connector, showing its mating interface configured according to the pinout uses shown inFIG.3.FIG.4Billustrates a conventional SAS/SATA/PSAS male connector configured to mate with the conventional SAS/SATA/PSAS female cable connector ofFIG.4A, showing the mating interface of the conventional SAS/SATA/PSAS male connector.FIGS.5A and5Billustrates a conventional vertical SAS/SATA/PSAS female head, showing its mating interface configured according to the pinout uses shown inFIG.3.

SUMMARY OF THE INVENTION

For improving the issues above, a SAS/SATA/PSAS female head connector is disclosed for replacing the original double rows of vertical SAS/SATA/PSAS female head and a back board and a pair of back board connectors (male and female). Therefore, the interconnection structure from the server SSD to the motherboard is effectively simplified, thereby lowering the manufacturing cost and improving the heat dissipation performance of the server.

For achieving the aforementioned objectives, a PCIe SAS direct link connector is provided, comprising a cable end and a back board; the cable end fixed on the back board; the cable end including a direct link female head, a high-speed line, and a 15pin plug terminal; the back board including a primary cavity position and a secondary cavity position; the direct link female head connected with the high-speed line; the 15pin plug terminal formed in an asymmetric bow shape having a short side and a long side, a first contact point disposed on the short side, and a second contact point disposed on the long side. In some embodiments, the 15pin plug terminal connected with the high-speed line; when the 15pin plug terminal is combined with a server board end connector, the first contact point and the second contact point contact a terminal of the server board end connector, respectively; the primary cavity position disposed at a center of the back board, the cable end connected with the server board end connector through the primary cavity position; the secondary cavity position connected with the primary cavity position; the 15pin plug terminal connected with the server board end connector through the secondary cavity position.

Preferably, in the PCIe SAS direct link cable, the direct link female head comprises a fix bore; the fix bore disposed on two sides of the direct link female head; the back board comprising a secondary bore; the secondary bore disposed on two sides of the primary cavity position corresponding to the fix bore; when a screw passes through the fix bore and the secondary bore, the screw is fastened with a nut, such that the direct link female head is fixed on the back board.

Preferably, in the PCIe SAS direct link cable, the cable end comprises a 15pin plug terminal fix member; when the 15pin 15 plug terminal is combined with the server board end connector, the 15pin plug terminal fix member fastens the 15pin plug terminal on the secondary cavity position.

With such configuration, the present invention achieves following advantages compared with conventional arts. The present invention provides a novel SAS/SATA/PSAS female connector for replacing double rows of vertical SAS/SATA/PSAS female and a back board and a pair of back board connectors (male and female), thereby simplifying the interconnection structure from the server SSD to the motherboard. Novel points are described as follows: The present invention simplifies the structure and lowers the manufacturing cost. The back board is free from running wires and applied only for fixing the cable, so as to be provided with a large hollow area for improving the heat dissipation performance of the system. Compared with a conventional server, the SSD in the present invention transmits data to the motherboard through the direct link cable, so as to improve the attenuation caused by wires. The direct link cable is universally applicable and suitable for application on 1U and 2U server. In some embodiments, the present invention is added with a 15pin terminal, which is a double head contact terminal and solely fixed on the back board and connected with the SSD, so as to additionally power the SSD.

DETAILED DESCRIPTION OF THE INVENTION

The aforementioned and further advantages and features of the present invention will be understood by reference to the description of the preferred embodiment in conjunction with the accompanying drawings where the components are illustrated based on a proportion for explanation but not subject to the actual component proportion.

FIGS.1A-2are applied for illustrating the embodiments of the present invention in details, without limiting the features of the present invention thereto.

Referring toFIGS.1A-1B, a PCIe SAS direct link connector comprises a cable end1and a back board2; the cable end1fixed on the back board2.

The cable end1comprises a direct link female head11having a front portion11aand a back portion11b, a high-speed line12, and a 15pin plug terminal13. A 15 pin plug300is also illustrated inFIG.3. The back portion11bof the female head11comprises a first portion11baand a second portion11bb.

The back board2comprises a primary cavity position21and a secondary cavity position22.

The direct link female head11is connected with the high-speed line12. As can be seen fromFIGS.1A, the high-speed line12fans out into a first segment12aextending along one side of the female head11, and a second segment12bextending along the opposite side of female head11. As can be seen, segment12bis shorter than segment12a, extending along only a portion of the length the second side.

As can be seen, segment12bextends between the 15pin plug terminal13and the second portion11bbof the back portion11bof the female head11. One of ordinary skill in the art would have understood that the first segment12ais configured to connect to terminals held in female head11in a first row, such as the pins E7-E25and S8-S28ofFIG.3; and the second segment12bis configured to connect to terminals held in the female head11in a second row, which may correspond to the pins S1-S7and E1-E6ofFIG.3.

Referring toFIG.2, the 15pin plug terminal13is formed in an asymmetric bow shape having a short side16and a long side17; a first contact point18disposed on the short side16, and a second contact point19disposed on the long side17; the 15pin plug terminal13connected with the high-speed line12; when the 15pin plug terminal13is combined with a server board end connector30, the first contact point18and the second contact point contact a terminal of the server board end connector30, respectively.

The primary cavity position21disposed at a center of the back board2; the cable end1connected with the server board end connector30through the primary cavity position21; the secondary cavity position22connected with the primary cavity position21; the 15pin plug terminal13connected with the server board end connector30through the secondary cavity position22.

The direct link female head11comprises a fix bore15; the fix bore15disposed on two sides of the direct link female head11(e.g., the first portion11baand second portion11bbof the back portion11b); the back board2comprising a secondary bore23; the secondary bore23disposed on two sides of the primary cavity position21corresponding to the fix bore15; when a screw passes through the fix bore15and the secondary bore23, the screw is fastened with a nut, such that the direct link female head11is fixed on the back board2.

The cable end1comprises a 15pin plug terminal fix member14; when the 15pin plug terminal13is combined with the server board end connector, the 15pin plug terminal fix member14fastens the 15pin plug terminal13on the secondary cavity position22.