TWI733591B - Ddr memory slot connector - Google Patents

Abstract

The present invention is related to a DDR memory slot connector. The DDR memory slot connector has an insulated socket and a plurality of pins. The insulated socket has two opposite side walls and a plurality of pin receivers are formed in each side wall and communicated with a slot in the insulated socket. A plurality of solder foot fixing grooves respectively corresponding to the plurality of pin receivers are formed outside the corresponding side wall. A solder foot fixing part extending outward from the corresponding solder foot of the corresponding pin is fixed in corresponding solder foot fixing groove. Each of a plurality of stress relief grooves is formed between two adjacent solder foot fixing grooves. Therefore, during the DDR memory slot connector is assembled, the internal stress generated by the solder foot fixing parts and the solder foot fixing grooves is released by the stress relief grooves. The accumulation of internal stress, thermal deformation and warping during use, bad soldering of surface adhesive work pins, etc. are voided to improve the production quality and increase a quality of the DDR memory slot connector.

Description

DDR memory slot connector

The present invention relates to an electrical connector, in particular to a DDR memory slot connector.

Surface adhesion technology does not require drilling on the circuit board during soldering, so that the inner circuit board of the multilayer circuit board has more space for circuit layout, effectively reducing the number of layers of the circuit board, and achieving high-density circuit layout Design, so it is widely used in the welding process of various fields.

Generally, when a surface mount electrical connector fixes multiple terminals, a fixing device is usually designed on the terminal to make the electrical connector fix the terminal part to form a combination, but this will cause internal stress between the terminal and the electrical connector Gather. As shown in Figure 6 and Figure 7, a double data rate synchronous dynamic random access memory (Double data rate synchronous dynamic random access memory, DDR SDRAM) electrical connector is taken as an example, which includes an insulated socket 40 and a plurality of A terminal 50. The two side plates of the insulated socket 40 are respectively formed with a plurality of side-by-side terminal receiving grooves 41 to accommodate the terminals; wherein the terminal 50 is located on two opposite sides of the reference portion 51 in the terminal receiving groove 41 The edges 510 respectively extend transversely with a barb 511 so as to be tightly fixed in the terminal receiving groove 41.

Therefore, when the terminal 50 is combined with the insulated socket 40, internal stress builds up between the barbs 511 of each terminal 50 and the terminal accommodating grooves 41, thermal deformation and warping occur during use, and terminals appear on the surface. Problems such as poor soldering reduce the production and use quality of the DDR memory socket connector.

In view of the disadvantages of the above-mentioned DDR memory socket connector, the main purpose of the present invention is to provide a DDR memory socket connector to solve the above-mentioned problems in the prior art.

The main technical means used to achieve the purpose of the above invention is to make the DDR memory socket connector include: An insulated socket includes a slot and two side plates, and each side plate is formed with: A plurality of side-by-side terminal receiving slots are connected with the slot of the insulated socket and exposed on the bottom surface of the insulated socket; A plurality of solder pin fixing grooves are respectively located outside the corresponding terminal receiving grooves and exposed on the bottom surface of the insulated socket; and A plurality of stress relief grooves are respectively located between the corresponding adjacent solder foot fixing grooves and exposed on the bottom surface of the insulated socket; and A plurality of terminals are respectively arranged in the corresponding side plates of the insulated socket, and each terminal includes from top to bottom: A contact part is arranged in an upper space of the terminal receiving groove and partially protrudes into the slot; A reference portion extending downward from the contact portion and arranged in a reference portion fixing groove of the terminal receiving groove; A solder foot extending downward from the reference portion, out of the bottom surface of the insulated socket, and extending laterally along the bottom surface of the insulated socket toward the solder foot fixing groove outside; and A welding foot fixing part extends upward from the welding foot and penetrates into the welding foot fixing groove.

The advantage of the present invention is that the welding foot fixing part is fixed by the welding foot fixing groove, and the stress relief groove is formed between any two adjacent welding foot fixing grooves, and the stress relief groove is used to absorb the welding foot fixing groove and The internal stress generated between the solder leg fixing parts during assembly solves the problems of internal stress accumulation during assembly of the DDR memory socket connector, thermal deformation and warping during application, and poor soldering of surface adhesive industrial terminals. Improve the production and use quality of the DDR memory socket connector.

The present invention is aimed at improving the electrical connector, and the technical content of the present invention will be described in detail below with the embodiment and the drawings.

First, please refer to FIG. 1, an embodiment of the DDR memory socket connector 1 of the present invention, which includes an insulated socket 10 and a plurality of terminals 20; wherein the terminals 20 are housed in the insulated socket 10 side by side .

Please refer to FIGS. 2A, 2B and 5A. The above-mentioned insulated socket 10 includes a top surface 11, a slot 12, a bottom surface 16 and two side plates 17; in this embodiment, the slot 12 is a long The groove is formed at the middle position of the top surface 11 of the insulating socket 10, and the two side plates 17 are respectively located on two opposite sides of the socket 12. Each side plate 17 of the insulating socket 10 is formed with a plurality of terminal receiving grooves 13, a plurality of solder foot fixing grooves 14 and a plurality of stress relief grooves 15. The DDR memory slot connector 1 of the present invention may be a DDR5 memory slot connector.

As shown in FIG. 1, the terminal receiving grooves 13 are arranged side by side in the corresponding side plate 17. As shown in FIG. 5A, the terminal receiving grooves 13 penetrate the corresponding side plate 17 and are exposed on the top surface of the insulated socket 10. 11 and the bottom surface 16, and communicate with the slot 12; and as shown in FIG. 5B, each of the terminal accommodating grooves 13 further includes an upper space 130 and a reference portion fixing groove 131 from top to bottom, wherein the upper space 130 Has a width W1, and the reference portion fixing groove 131 has a groove width W2 and a groove depth L2, and the two opposite inner walls 132 of the reference portion fixing groove 131 are respectively a flat surface; in this embodiment, the upper space The width W1 of 130 is smaller than the groove width W2 of the reference portion fixing groove 131.

As shown in FIG. 5A, the solder foot fixing grooves 14 are respectively formed on the outside of the corresponding terminal receiving groove 13, and each of the solder foot fixing grooves 14 is exposed on the bottom surface 16 of the insulating socket 10; in this embodiment 5B and 5C, the foot fixing groove 14 has a groove width W3 and a groove depth L3, wherein the groove width W3 of the foot fixing groove 14 is smaller than the groove width W2 of the reference portion fixing groove 131, and The groove depth L3 of the foot fixing groove 14 is smaller than the groove depth L2 of the reference portion fixing groove 131; in one embodiment, the welding foot fixing grooves 14 and the terminal receiving groove 13 are not connected.

As shown in FIGS. 2A and 2B, the stress relief grooves 15 are formed between any two adjacent solder foot fixing grooves 14; in this embodiment, the stress relief grooves 15 are exposed outside the insulating socket 10 The bottom surface 16 can also be further exposed on the outer wall surface 170 of the corresponding side plate 17, wherein the stress relief groove 15 is not connected with the solder foot fixing groove 14 and the terminal receiving groove 13.

Please refer to FIG. 3, each of the terminals 20 further includes a contact portion 21, a reference portion 22, a solder leg 23 and a solder leg fixing portion 24 from top to bottom.

Please refer to FIG. 5A and FIG. 5B. The contact portion 21 is disposed in the upper space 130 of the terminal receiving groove 13 and partially protrudes into the slot 12; in this embodiment, the contact portion 21 There is a bent portion 210 which protrudes into the slot 12; and the contact portion 21 has a width W4.

Please refer to FIGS. 4 and 5A, the reference portion 22 is extended downward from the contact portion 21, and is set in the reference portion fixing groove 131 of the terminal receiving groove 13, two opposite sides of the reference portion 22 The sides 220 are respectively flat to correspond to the same flat inner wall 132 in the reference portion fixing groove 131; in this embodiment, the reference portion 22 has a width W5 and a length L5, and the reference portion 22 has a width W5 and a length L5. The width W5 is greater than the width W4 of the contact portion 21.

Please refer to FIG. 4 and FIG. 5A. The solder foot 23 extends downward from the reference portion 22 and passes through the bottom surface 16 of the insulating socket 10, and after bending, it faces the reference portion fixing groove along the bottom surface 16 The welding foot fixing groove 14 outside 131 extends in the direction; in this embodiment, the welding foot 23 is bent at a right angle with the reference portion 22, and as shown in FIG. 5B, it has a width W6.

Please refer to FIG. 4 and FIG. 5C. The above-mentioned solder leg fixing portion 24 is bent and inserted upward into the solder leg fixing groove 14, and a locking point 241 is extended laterally on two opposite sides 240; in this embodiment The solder leg fixing portion 24 is bent at a right angle to the solder leg 23, and the solder leg fixing portion 24 has a width W7 and a length L7. There is a distance W8 between the two clamping points 241. The solder leg The end 242 of the fixing part 24 has a width W9, and the width W9 of the end 242 of the welding foot fixing part 24 is smaller than the groove width W3 of the welding foot fixing groove 14, so as to be easily inserted into the welding foot fixing groove 14. The distance W8 between the two clamping points 241 of the foot fixing part 24 is slightly larger than the groove width W3 of the welding foot fixing groove 14, so that the welding foot fixing part 24 is pressed tightly in the two opposite inner walls 140 of the welding foot fixing groove 14; In addition, the width W7 of the solder leg fixing portion 24 is substantially the same as the width W6 of the solder leg 23 and is smaller than the width W5 of the reference portion 22; the length L7 of the solder leg fixing portion 24 is smaller than the length L5 of the reference portion 22.

As shown in FIG. 4 and FIG. 5A, when the DDR memory socket connector 1 is surface-mounted, the solder pins 23 of the terminals 20 will be soldered to the corresponding solder joints 31 of a circuit board 30.

To sum up, the terminals of the DDR memory socket connector of the present invention are assembled in the insulated socket, and the welding foot fixing part is tightly fixed in the welding foot fixing groove by the clamping point, and by any two A stress relief groove is formed between the adjacent solder leg fixing grooves to absorb the internal stress generated by the solder leg fixing groove and the solder leg fixing portion during assembly, and avoid the accumulation of internal stress, thermal deformation and warpage during use, and surface adhesion Problems such as poor soldering of operating terminals have improved the production and use quality of the DDR memory socket connector.

The above are only the embodiments of the present invention and do not limit the present invention in any form. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field, Without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention is based on the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

1: DDR memory slot connector 10: Insulated socket 11: Top surface 12: Slot 13: Terminal receiving slot 130: upper space 131: Reference part fixing groove 132: Inner Wall 14: Welding foot fixing groove 140: inner wall 15: Stress relief groove 16: bottom 17: side panel 170: Outer wall 20: Terminal 21: Contact 210: Bending part 22: Reference Department 220: side 23: Welding foot 24: Welding foot fixed part 240: side 241: Stuck 242: end 30: circuit board 31: Solder joint 40: insulated socket 41: terminal receiving slot 42: Reference part fixing groove 50: terminal 51: Reference Department 510: side 511: Barb

Figure 1: An exploded perspective view of an embodiment of the DDR memory socket connector of the present invention. Fig. 2A: A perspective view of an embodiment of the DDR memory socket connector of the present invention. Fig. 2B: A partially enlarged perspective view of Fig. 2A. Figure 3: A perspective view of the terminals of the DDR memory socket connector of the present invention. Figure 4: A partial bottom perspective view of an embodiment of the DDR memory socket connector of the present invention. Fig. 5A: A cross-sectional view of an embodiment of the DDR memory socket connector of the present invention. Figure 5B: A partial cross-sectional view of an embodiment of the DDR memory socket connector of the present invention. Fig. 5C: A partial cross-sectional view of an embodiment of the DDR memory socket connector of the present invention. Figure 6: A partial cross-sectional view of a prior art DDR memory socket connector. Figure 7: A perspective view of the terminals of the prior art DDR memory socket connector.

1: DDR memory slot connector

10: Insulated socket

11: Top surface

12: Slot

13: Terminal receiving slot

17: side panel

170: Outer wall

20: Terminal

Claims (10)

A DDR memory slot connector includes: an insulated socket including a slot and two side plates, and each side plate is formed with: A plurality of side-by-side terminal receiving slots are connected with the slot of the insulated socket and are exposed on the bottom surface of the insulated socket; A plurality of solder pin fixing grooves are respectively located outside the corresponding terminal receiving grooves and exposed on the bottom surface of the insulated socket; and A plurality of stress relief grooves are respectively located between the corresponding adjacent solder foot fixing grooves and exposed on the bottom surface of the insulated socket; and A plurality of terminals are respectively arranged in the corresponding side plates of the insulated socket, and each terminal includes from top to bottom: A contact part is arranged in an upper space of the terminal receiving groove and partially protrudes into the slot; A reference portion extending downward from the contact portion and arranged in a reference portion fixing groove of the terminal receiving groove; A solder foot extending downward from the reference portion, out of the bottom surface of the insulated socket, and extending laterally along the bottom surface of the insulated socket toward the solder foot fixing groove outside; and A welding foot fixing part extends upward from the welding foot and penetrates into the welding foot fixing groove. The DDR memory socket connector according to claim 1, wherein two opposite sides of the solder foot fixing portion respectively have a clamping point, and the distance between the two clamping points is substantially greater than the groove width of the solder foot fixing groove . The DDR memory socket connector according to claim 2, wherein the distance between the two opposite sides of the end of the solder foot fixing part is smaller than the width of the solder foot fixing groove. The DDR memory socket connector according to any one of claims 1 to 3, wherein each of the stress relief grooves is exposed outside the insulating socket. The DDR memory socket connector according to any one of claims 1 to 3, wherein the two opposite sides of the reference portion are respectively a flat surface, and the reference portion corresponds to the two opposite sides of the reference portion fixing groove The inner walls are in a plane respectively. The DDR memory socket connector described in claim 5, wherein: The groove width of the welding foot fixing groove is smaller than the groove width of the reference portion fixing groove; and The width of the solder foot fixing portion of each terminal is smaller than the width of the reference portion of each terminal. The DDR memory socket connector according to claim 5, wherein the width of the solder leg of each terminal is substantially the same as the width of the solder leg fixing portion. The DDR memory socket connector according to any one of claims 1 to 3, wherein: The groove depth of the welding foot fixing groove is smaller than the groove depth of the reference portion fixing groove; and The length of the solder foot fixing part of each terminal is smaller than the length of the reference part of each terminal. The DDR memory socket connector according to any one of claims 1 to 3, wherein: The width of the upper space of the terminal receiving groove is smaller than the groove width of the fixing groove of the reference part; and The width of the contact portion of each terminal is smaller than the width of the reference portion of each terminal. The DDR memory socket connector according to any one of claims 1 to 3, wherein the solder leg fixing portion and the solder leg are at a right angle, and the reference portion and the solder leg are at a right angle .

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