TWI656702B - Sfp cable connector capable of protecting solder joints - Google Patents

Abstract

A small pluggable cable connector capable of protecting a solder joint, comprising a lower casing, a cable, a circuit board welded to one end of the cable to form a plurality of solder joints, and a circuit board formed above the circuit board And covering the insulators of the solder joints, and an upper casing mounted on the lower casing and capable of pressing the insulator. The small pluggable cable connector of the present invention presses the insulator by the upper casing, thereby providing direct protection to the solder joint, preventing the solder joint between the cable and the circuit board from being damaged, and ensuring the small pluggable wire. The quality of the cable connector.

Description

Small pluggable cable connector that protects solder joints

This invention relates to a connector, and more particularly to a small form factor pluggable cable connector that protects solder joints.

The Small Form-factor Pluggable (SFP) cable connector mainly includes an upper casing, a lower casing, a circuit board assembled in the lower casing, and a wire connected to the circuit board. cable.

Please refer to the Chinese Utility Model Patent Publication No. 202362501, which discloses a QSFP module structure. In the seventh figure, a copper cable (11) is soldered to a circuit board (5) and placed in a base (4). The copper cable (11) is then fixed by a cable clamp (10) to prevent the copper cable (11) from being accidentally pulled out.

However, the above-mentioned fixing method using the cable clamp (10) provides only indirect protection for the solder joint (or solder joint) between the copper cable and the circuit board, when the module is subjected to vibration or other external collision. As long as the circuit board located in the base is slightly shaken, it will affect the soldering between the copper cable and the circuit board, thus affecting the signal transmission quality.

Therefore, the above fixing method cannot provide reliable protection for the solder joint between the copper cable and the circuit board, and it is necessary to provide a new small pluggable cable connector capable of preloading. The solder joint between the copper cable and the board provides direct protection to the solder joint.

The main object of the present invention is to provide a small pluggable cable connector capable of protecting solder joints, which can directly protect the solder joints and prevent the solder joints between the cables and the circuit board from being damaged, thereby ensuring the cable connectors. Product quality.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.

In order to achieve the above object, the present invention adopts the following technical solution: a small pluggable cable connector capable of protecting solder joints mainly includes a lower casing having a lower storage space, and one end of which protrudes into the lower casing to receive a circuit board extending outside the lower casing and a circuit board fixed to the storage space below the lower casing and welded to one end of the cable to form a plurality of solder joints, An insulator above the circuit board and covering the solder joints, and an upper case mounted on the lower case and capable of pressing down the insulator. The upper casing has an upper receiving space and a boss extending downward from the top wall of the upper receiving space, and the bottom surface of the boss presses the top surface of the insulator.

In one embodiment, the lower housing has a front insertion end, a rear holding end, and two parallel side walls, the lower receiving space being formed between the two side walls of the lower housing; Forming a socket at the insertion end, and forming a pair of lower fixing holes at the holding end; the upper housing has a front end, a rear end, and two parallel side walls, wherein the upper receiving space is formed in the upper housing Between the two side walls; a pair of upper fixing holes are formed at the rear end; when the upper casing is assembled on the lower casing, the front end is fastened with the insertion end, the rear end and the holding end When fastened together, a pair of fixing members pass through the corresponding upper fixing holes and lower fixing holes.

In one embodiment, a pair of positioning protrusions extending toward the lower receiving space are further formed on the two side walls of the lower casing; a notch is formed on each of the two sides of the circuit board for corresponding The positioning projections cooperate to secure the circuit board to the lower housing.

In one embodiment, the upper surface of the circuit board has a row of conductive sheets at the front end of the circuit board and a row of solder pads located behind the conductive sheets.

In one embodiment, one end of the cable is a fixed end and the other end is a free end, wherein the fixed end projects into the storage space below the lower case, and the free end extends out of the lower case. The cable also has a plurality of conductors projecting forwardly from the fixed end, the conductors being soldered to the solder pads of the circuit board to form the solder joints.

In one embodiment, the insulator has a top surface and a horizontal bottom surface, and the insulator is directly formed on the upper surface of the circuit board, and the horizontal bottom surface of the insulator covers the solder joints formed on the circuit board.

In one embodiment, the top surface of the insulator is stepped and is divided into an upper horizontal plane and a lower horizontal plane.

In one embodiment, the boss has a horizontal bottom surface, and the horizontal bottom surface of the boss presses down the lower horizontal portion of the top surface of the insulator.

In one embodiment, the small form-factor pluggable cable connector further includes a grounding shell surrounding and fixed to the periphery of the upper casing and the lower casing, and a buckle attached to the lower casing. Unlock the mechanism.

In one embodiment, the fastener is a screw.

Compared with the prior art, the small form-factor pluggable cable connector of the present invention has a boss (or a plastic body) formed above the solder joint, and a boss is disposed on the upper casing, by means of the boss The insulator is pressed down to provide direct protection to the solder joints, preventing solder joints between the cable and the board from being damaged, and ensuring product quality of the cable connector.

1‧‧‧Small pluggable cable connector

10‧‧‧ Lower case

101‧‧‧Insert

102‧‧‧Handheld

103, 503‧‧‧ side wall

104‧‧‧Under storage space

105‧‧‧ socket

106‧‧‧Under fixing hole

107‧‧‧Positioning bulges

20‧‧‧ Cable

201‧‧‧ fixed end

202‧‧‧Free end

203‧‧‧ conductor

30‧‧‧ boards

301‧‧‧Conductor

302‧‧‧ solder pad

303‧‧‧ Notch

304‧‧‧ solder joints

40‧‧‧Insulator

401‧‧‧ top surface

402‧‧‧Upper level

403‧‧‧Deep level

404, 507‧‧‧ horizontal bottom

50‧‧‧Upper casing

501‧‧‧ front end

502‧‧‧ Backend

504‧‧‧Upholstery space

505‧‧‧Boss

506‧‧‧Upper fixing hole

60‧‧‧Fixed parts

70‧‧‧ Grounding shell

80‧‧‧Lock and unlock mechanism

The first figure is a schematic perspective view of a small form factor pluggable cable connector of the present invention.

The second figure is a disassembled schematic view of the cable connector shown in the first figure, in which the grounding shell and the upper casing are disassembled therefrom.

The third figure is a schematic view of the other direction of the small form-factor pluggable cable connector of the present invention shown in the second figure.

The fourth figure is a schematic diagram of the partial structure disassembly of the small pluggable cable connector of the present invention, wherein the positional relationship between the cable and the circuit board is mainly represented.

The fifth figure is a schematic diagram of a partial structure disassembly of the small pluggable cable connector of the present invention, wherein the positional relationship between the circuit board and the lower casing is mainly represented.

The sixth figure is a schematic structural view of a circuit board and a lower case of the small form-factor pluggable cable connector of the present invention.

The seventh drawing is a schematic longitudinal sectional view of the small form-factor pluggable cable connector of the present invention taken along the line A-A shown in the first figure.

The following description of the embodiments is provided to illustrate the specific embodiments of the invention. The directional terms mentioned in the present invention, such as "upper", "lower", "before", "after", "left", "right", "top", "bottom", etc., are only referred to as additional figures. direction. Therefore, the directional language used is for the purpose of illustration and understanding of the invention.

Referring to the first to seventh figures, the small form factor pluggable cable connector 1 of the present invention is used to connect network devices such as motherboards and optical fibers of devices such as switches and routers.

As shown in the first, second, and third figures, the small form factor pluggable cable connector 1 of the present invention mainly includes a lower housing 10, a cable 20 extending into the lower housing 10, and a fixed a circuit board 30 connected to the cable 20 in the lower casing 10, an insulator 40 above the circuit board 30, and an upper casing 50 mounted on the lower casing 10 and pressing the insulator 40 .

As shown in the sixth figure, the lower casing 10 has a front insertion end 101, a rearward holding end 102, two parallel side walls 103, and a lower storage space 104 between the two side walls 103. . In the present embodiment, a socket 105 is formed at the insertion end 101 of the lower casing 10 for docking with an external module (not shown). A pair of lower fixing holes 106 are formed in the holding end 102, and a pair of fixing members 60 (shown in the second figure) are passed through to fix the upper casing 50 to the lower casing 10. Further, a pair of positioning protrusions 107 extending toward the lower receiving space 104 are formed on the two side walls 103 of the lower casing 10 for fixing the circuit board 30. In this embodiment, the fixing member 60 is a screw.

As shown in the sixth figure, on the upper surface of the circuit board 30, there is a row of conductive sheets 301 (or gold fingers) located at the front end of the circuit board 30, and a row of solder pads 302 located behind the conductive sheets 301. In this embodiment, the lower surface of the circuit board 30 also has a row of conductive sheets (not shown) located at the front end of the circuit board 30. The conductive sheets 301 are both used to form an electrical connection with an external module, and the row of solder pads 302 is used to solder the cable 20. A notch 303 is formed on each side of the circuit board 30. As shown in FIG. 5, when the circuit board 30 is laid flat under the lower housing 10, the recess 303 on the circuit board 30 can be aligned with the positioning protrusion 107 on the lower housing 10. Cooperating, thereby fixing the circuit board 30 to the lower casing 10.

As shown in the fifth figure, the cable 20 is used to connect two SFP connectors for optical signal transmission. The cable 20 has a fixed end that extends into the receiving space 104 below the lower casing 10. 201, a free end 202 extending out of the lower casing 10, and a plurality of conductors 203 projecting forward from the fixed end 201. As shown in the fourth figure, the conductors 203 are soldered to the solder pads 302 of the circuit board 30 such that a plurality of solder pads 304 are formed on the upper surface of the circuit board 30.

As shown in the fourth and fifth figures, the insulator 40 has a top surface 401 and a horizontal bottom surface 404. In this embodiment, the insulator 40 is a plastic body formed by a potting process at the solder joint 304 of the circuit board 30. In the present embodiment, the top surface 401 is stepped and has only one step, and the top surface 401 is divided into an upper horizontal surface 402 and a lower horizontal surface 403. However, in other embodiments, the top surface 401 may be provided with a plurality of steps as needed; or the top surface 401 is not provided with a step, but only a horizontal top surface 401; or a recess is provided on the top surface 401 unit.

As shown in the second and fourth figures, the insulator 40 is directly formed on the upper surface of the circuit board 30. The horizontal bottom surface 404 of the insulator 40 covers the solder joints 304 formed on the circuit board 30. In addition, during assembly, the circuit board 30, the conductors 203 soldered together with the circuit board 30, and the insulator 40 covering the solder joints 304 are placed together under the lower housing 10 104 (labeled in the sixth picture).

As shown in the third figure, the upper housing 50 has a substantially identical configuration to the lower housing 10. The upper housing 50 has a front end 501, a rear end 502, two parallel side walls 503, and a The upper storage space 504 between the two side walls 503. The upper housing 50 further has a boss 505 extending downward from the top wall of the upper receiving space 504 for pressing the insulator 40 (see the second drawing).

As shown in the second figure, a pair of upper fixing holes 506 are formed in the rear end 502 for the fixing member 60 to pass therethrough.

As shown in the third figure, in the present embodiment, the boss 505 has a horizontal bottom surface 507. Of course, in other embodiments, the shape of the bottom surface 507 of the boss 505 may vary according to the shape of the top surface 401 of the insulator 40. For example, the bottom surface 507 of the boss 505 may be provided in a stepped shape so as to mesh with the stepped top surface 401 of the insulator 40, and may also function as a pressing force.

As shown in the seventh figure, when the upper casing 50 is assembled on the lower casing 10, the front end 501 is fastened with the insertion end 101, and the rear end 502 is fastened with the grip end 102. The bottom surface 507 of the boss 505 presses the lower horizontal surface 403 of the top surface 401 of the insulator 40 to form a stable meshing structure. When the upper casing 50 is fixed to the lower casing 10 by the fixing member 60, the insulator 40 is firmly pressed by the boss 505 to provide direct protection to the pads 304.

As shown in the first to third figures, the small form-factor pluggable cable connector 1 further includes a grounding shell 70 surrounding and fixed to the upper casing 50 and the periphery of the lower casing 10, and a mounting body A latch and unlocking mechanism 80 on the lower housing 10.

In summary, the small form factor pluggable cable connector 1 of the present invention is provided with an insulator 40 (or plastic body) over the solder joint 304, and a boss 505 is disposed on the upper casing 50 by means of the boss 505. Pressing the insulator 40 provides direct protection to the solder joint 304, preventing the solder joint 304 between the cable 20 and the circuit board 30 from being damaged, and ensuring the product quality of the cable connector.

Claims (10)

The utility model relates to a small pluggable cable connector capable of protecting solder joints, which mainly comprises: a lower casing having a lower storage space; a cable, one end of which extends into the storage space below the lower casing, and the other end extends Out of the lower casing; a circuit board is fixed in the storage space below the lower casing, and is welded to one end of the cable to form a plurality of solder joints on the circuit board; an insulator is formed on the circuit board The upper surface of the circuit board covers the solder joints; and an upper casing is mounted on the lower casing and can press the insulator; wherein the upper casing has an upper storage space and a storage space from the upper storage space a boss extending downward from the top wall, the bottom surface of the boss pressing down the top surface of the insulator. The small pluggable cable connector capable of protecting a solder joint according to claim 1, wherein the lower housing has a front insertion end, a rear holding end, and two parallel side walls. The lower receiving space is formed between the two side walls of the lower casing; wherein a socket is formed at the insertion end, and a pair of lower fixing holes are formed at the holding end; the upper casing has a front end and a rear end And two parallel side walls formed between the two side walls of the upper casing; a pair of upper fixing holes are formed at the rear end; when the upper casing is assembled on the lower casing, the The front end is fastened with the insertion end, and the rear end is fastened with the holding end, and a pair of fixing members pass through the corresponding upper fixing holes and the lower fixing holes. The small pluggable cable connector capable of protecting solder joints according to claim 2, wherein a pair of positioning protrusions extending toward the lower receiving space are further formed on the two side walls of the lower casing; The two sides of the circuit board are each formed with a recess for cooperating with a corresponding positioning protrusion to fix the circuit board to the lower casing. A small pluggable cable connector capable of protecting solder joints according to claim 1, wherein a conductive sheet on a front surface of the circuit board has a row on the upper surface of the circuit board, and a row is located in the A solder pad behind the conductive sheet. The small pluggable cable connector capable of protecting solder joints according to claim 4, wherein one end of the cable is a fixed end and the other end is a free end, wherein the fixed end extends into the lower shell. The lower end of the body extends out of the lower casing; the cable further has a plurality of conductors projecting forward from the fixed end, and the conductors are soldered to the solder pads of the circuit board, thereby These solder joints are formed. The small pluggable cable connector capable of protecting a solder joint according to claim 1, wherein the insulator has a top surface and a horizontal bottom surface, and the insulator is directly formed on the upper surface of the circuit board. The horizontal bottom surface of the insulator covers the solder joints formed on the circuit board. The small pluggable cable connector capable of protecting solder joints according to claim 6, wherein the top surface of the insulator is stepped and divided into an upper horizontal plane and a lower horizontal plane. The small pluggable cable connector capable of protecting solder joints according to claim 7, wherein the bottom surface of the boss is horizontal, and the lower horizontal portion of the top surface of the insulator is pressed below. The small pluggable cable connector capable of protecting a solder joint according to claim 1, wherein the small pluggable cable connector further comprises a surrounding and fixed to the upper casing and the lower casing. a peripheral grounding shell and a latch and unlocking mechanism mounted to the lower housing. A small pluggable cable connector capable of protecting solder joints as claimed in claim 2, wherein the fixing member is a screw.