High-speed communication memory card edge connector

Abstract

The present invention provides a high-speed communication memory card edge connector, comprising an insulating body, having a longitudinal slot recessed downward from the top surface for inserting an electronic module, and a plurality of terminal slots are respectively provided in the longitudinal side walls on both sides of the slot; a plurality of terminals are respectively and one-to-one accommodated in the corresponding terminal slots in the two longitudinal side walls, at least a portion of the terminal slots are provided with double-layer terminals, and the remaining terminal slots are single-layer terminals, and each single-layer terminal is fixed in the corresponding terminal slot in an insertion manner; at the position of the double-layer terminal, the two terminals in each terminal slot are embedded together with a plug, and the plug is inserted and fixed in the terminal slot; the high-speed communication memory card edge connector can reduce the assembly error rate, reduce the manufacturing cost and increase the signal transmission channel, so that the signal transmission speed is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the field of connectors, and in particular relates to a high-speed communication memory card edge connector. Background Art

[0002] Chinese patent CN202210624516.8 discloses an electrical connector, which is a PCIE6.0 connector, used to plug in electronic cards such as PCIE cards and transmit high-speed signals. The electrical connector includes an insulating body, a plurality of terminals and a plug. The insulating body is provided with a docking surface, a slot formed by a recessed arrangement of the docking surface, and the slot is provided with a slot bottom surface facing the docking surface, and two inner wall surfaces connecting the docking surface and the slot bottom surface. The top surface of the insulating body constitutes the docking surface, and the electronic card is inserted into the slot through the docking surface. The insulating body includes two side walls located on both sides of the slot, each side wall is provided with a plurality of terminal slots, which accommodate corresponding terminals one by one, and the terminal slots pass through downward, inward through the inner wall surface, and at the same time pass through the docking surface upward.

[0003] The terminal includes a fixing portion, an elastic arm and a pin portion.

[0004] The plug is an integral structure and is mounted on the insulating body. The plug includes an insulating insert that is inserted into the signal terminal slot and a conductive insert that is inserted into the ground terminal slot. The plug includes a base plate, which includes a conductive plate layer and an insulating plate layer that are integrally connected to each other. The insulating plate layer is wrapped around the upper and lower surfaces of the conductive plate layer. The conductive insert is formed by integrally extending upward from the conductive plate layer, and the insulating insert is formed by integrally extending upward from the insulating plate layer. The conductive insert is made of a conductive plastic material. The conductive plate layer and the conductive insert are first formed by a first injection molding process, and then the insulating plate layer and the insulating insert are formed on the upper and lower surfaces of the conductive plate layer by a second injection molding process, thereby forming a plug with an integral structure. The conductive insert and the insulating insert are both columnar inserts. A row of columnar inserts is provided on each lateral side of the base plate, and each row of columnar inserts extends in the longitudinal direction. The columnar insert portion abuts against the retaining portion of the terminal in the upper half adjacent to the bottom surface of the slot, and is spaced a certain distance from the terminal in the lower half away from the bottom surface of the slot. The interference between the columnar insert portion and the insulating body is utilized to increase the retaining force between the plug and the insulating body.

[0005] The above-mentioned electrical connector has a row of terminals on each sidewall of the slot. The number of terminals cannot be increased, thus increasing the number of signal transmission channels and significantly improving signal transmission speed. Furthermore, the terminals and plugs are separate and installed in the insulating body through plug-in assembly. During assembly, they need to be inserted separately, which increases the probability of assembly errors. Therefore, improvements are needed. Summary of the Invention

[0006] The object of the present invention is to provide a high-speed communication memory card edge connector to solve the problems raised in the above background technology.

[0007] To achieve the above purpose, the technical solution used in the present invention is:

[0008] A high-speed communication memory card edge connector, comprising:

[0009] An insulating body having a longitudinal slot recessed downward from the top surface for inserting an electronic module, a plurality of terminal slots respectively provided in longitudinal side walls on both sides of the slot, and an ear clip receiving space and a pivoting portion for pivotally connecting the ear clip provided at at least one end of the insulating body;

[0010] At least one ear clip pivotally connected to one end of the insulating body;

[0011] Multiple terminals are respectively accommodated in corresponding terminal grooves in the two longitudinal side walls. At least some of the terminal grooves are provided with double-layer terminals, and the remaining terminal grooves are provided with single-layer terminals. Each single-layer terminal is fixed in the corresponding terminal groove by plug-in. In the position of the double-layer terminal, the two terminals in each terminal groove are embedded with a plug, and the plug is fixed in the terminal groove by plug-in.

[0012] The welding portion 1 of one layer of the double-layer terminal faces the same direction as the welding portion 2 of the single-layer terminal, and the welding portion 1 of the other layer of the double-layer terminal faces the opposite direction to the welding portion 2 of the single-layer terminal.

[0013] Furthermore, the double-layer terminal includes a lower terminal and an upper terminal, and the structures of the single-layer terminals in the remaining terminal slots are different from those of the lower terminal and the upper terminal of the double-layer terminal.

[0014] Furthermore, the contact portion 1 of the upper terminal is higher than the contact portion 1 of the lower terminal, the welding portion 1 of the upper terminal is flush with the welding portion 1 of the lower terminal, and the welding portion 1 of the upper terminal and the welding portion 1 of the lower terminal are oriented in the same direction or in opposite directions.

[0015] Furthermore, each of the upper-level terminals and lower-level terminals includes a fixing portion 1, which is embedded in the plug and extends upward to form an arm portion 1 extending out of the top of the plug, and the end of the arm portion 1 protrudes toward the slot side to form the contact portion 1. The lower end of the fixing portion 1 is connected to the welding portion 1, and the fixing portion 1 of each upper-level terminal protrudes outward away from the outside of the slot to form a holding portion extending out of the plug, and the holding portion is clamped and fixed on the inner wall of the terminal slot.

[0016] Furthermore, the plug includes a main board body, the top of the main board body protrudes on the side close to the slot and the side away from the slot to form a protruding portion, there is a notch between the two protruding portions, the protruding portion away from the slot protrudes outward on the side away from the slot to form a retaining portion, the retaining portion is clamped and fixed on the inner wall of the terminal slot, an arm of the lower terminal protrudes from the notch, and an arm of the upper terminal protrudes from the top of the protruding portion away from the slot.

[0017] Furthermore, the second welding portion of the single-layer terminal is oriented in the same direction as the first welding portion of the upper terminal of the double-layer terminal, and in the opposite direction to the first welding portion of the lower terminal of the double-layer terminal; or, the second welding portion of the single-layer terminal is oriented in the opposite direction to the first welding portion of the upper terminal of the double-layer terminal, and in the same direction as the first welding portion of the lower terminal of the double-layer terminal.

[0018] Furthermore, the second welding portion of the single-layer terminal and the first welding portion of the upper-layer terminal of the double-layer terminal are both oriented toward the outside of the insulating body.

[0019] Furthermore, each of the single-layer terminals includes a second fixing portion, which extends upward to form an arm portion, the end of which protrudes toward the slot side to form a second contact portion, the lower end of which is connected to the second welding portion, and a bayonet is provided on the second fixing portion, and a card block that matches the bayonet is provided on the inner wall of the terminal slot, and one side of the bayonet protrudes to hold and fix the card point on the card block.

[0020] Furthermore, a metal locking structure is provided at the other end of the insulating body for locking the electronic module.

[0021] Furthermore, the metal lock structure has a spring-type anti-retraction structure.

[0022] Compared with the prior art, the beneficial effects of the present invention are mainly reflected in: by locally setting up double-layer terminals, the number of terminals is increased on the basis of the traditional two-row single-row terminals, thereby increasing the signal transmission channel and greatly improving the signal transmission speed; by embedding the double-layer terminals and the plugs together, only allowing the plugs to be fixed in the terminal slot in an insertion manner, the assembly error rate can be reduced, and fixing the single-layer terminals in the terminal slot in an insertion manner can reduce the embedded molding process and reduce the manufacturing cost; the welding part of the single-layer terminal is designed to be in the same direction as the welding part of one layer of the double-layer terminal, so that the number of welding parts in the same direction is greater than the number of welding parts in the opposite direction, which makes it more convenient to check the welding effect; the welding part 2 of the single-layer terminal and the welding part 1 of the upper terminal of the double-layer terminal are designed to face the outside of the insulating body, which is not only convenient for checking the welding effect, but also more conducive to PCB routing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional exploded view of the high-speed communication memory card edge connector and the electronic module of the present invention;

[0024] Figure 2 A perspective view of a high-speed communication memory card edge connector;

[0025] Figure 3 is a three-dimensional diagram of the insulating body;

[0026] Figure 4 is a three-dimensional view of the insulating body from another angle;

[0027] Figure 5 is a perspective view of a terminal and a plug;

[0028] Figure 6 for Figure 5 A perspective view of a partial terminal and plug;

[0029] Figure 7 for Figure 5 A front view of the double-layer terminal and plug in FIG;

[0030] Figure 8 for Figure 7 A three-dimensional diagram of a double-layer terminal;

[0031] Figure 9 for Figure 7 A perspective view of a plug;

[0032] Figure 10 for Figure 5 A three-dimensional diagram of a single-layer terminal;

[0033] Figure 11 A cross-sectional view of the insulating body showing the location of the terminal slots for accommodating the double-layer terminals;

[0034] Figure 12 for Figure 11 Cross-sectional view of the junction with the double-layer terminal;

[0035] Figure 13 A cross-sectional view of the insulating body showing the location of the terminal slot for accommodating a single-layer terminal;

[0036] Figure 14 for Figure 13 Cross-sectional view of the junction with the single-layer terminal;

[0037] Figure 15 This is an exploded perspective view of another embodiment of the high-speed communication memory card edge connector of the present invention;

[0038] Figure 16 It is a three-dimensional diagram of the metal lock card structure;

[0039] Figure 17 A perspective view of a terminal and a plug of another embodiment of a high-speed communication memory card edge connector of the present invention;

[0040] Figure 18 for Figure 17 A perspective view of a partial terminal and plug;

[0041] Figure 19 for Figure 17 A three-dimensional diagram of a single-layer terminal;

[0042] Figure 20 It is a cross-sectional view at the single-layer terminal position.

[0043] Explanation of the accompanying reference numerals: insulating body 1, slot 11, longitudinal side wall 12, tower portion 13, terminal slot 14, block 141, anti-fouling portion 15, terminal 2, fixing portion 1 21, arm portion 1 22, contact portion 1 23, welding portion 1 24, holding portion 25, fixing portion 2 26, bayonet 261, card point 262, arm portion 2 27, contact portion 2 28, welding portion 2 29, plug 3, main board 31, protruding portion 32, notch 33, holding portion 34, ear button 4, metal lock structure 5, spring clip anti-retraction structure 51, electronic module 6, iron foot 7. DETAILED DESCRIPTION

[0044] To facilitate a better understanding of the purpose, structure, features, and effects of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

[0045] like Figure 1-14 As shown, the high-speed communication memory card edge connector includes an insulating body 1 , a plurality of terminals 2 housed in the insulating body 1 , and a plurality of plugs 3 .

[0046] The middle portion of the top surface of the insulating body 1 is recessed in the longitudinal direction to form a longitudinal slot 11. Slot 11 is provided with longitudinal sidewalls 12 arranged along the length of slot 11 on both sides. A tower portion 13 (containing an ear clip accommodating space) is provided at each end of the longitudinal direction of the insulating body 1. The tower portion 13 contains a pivoting portion for pivotally connecting the ear clip. Both ends of slot 11 pass through the corresponding tower portion 13. The longitudinal sidewalls 12 on both sides of slot 11 are provided with multiple terminal slots 14. Each terminal slot 14 is of the same size but has a different structure. The terminal slots 14 pass through the top and bottom surfaces of the insulating body 1 and also pass through the slot-facing surface of the longitudinal sidewalls 12. A foolproof portion 15 is provided in slot 11, connecting the two longitudinal sidewalls 12. The foolproof portion 15 divides slot 11 into slot 1 and slot 2, which is shorter than slot 1. The foolproof portion 15 is used to prevent the electronic module 6 from being inserted in reverse.

[0047] One of the towers 13 of the insulating body 1 is provided with an ear clip 4, and the other tower 13 is also provided with an ear clip 4. The two ear clips 4 snap together and securely attach to the sides of the electronic module 6 inserted into the slot 11, thereby securing the electronic module 6. An iron foot 7 is fixed to the bottom of each tower 13 of the insulating body 1 for connecting to a circuit board to secure the insulating body 1 to the circuit board.

[0048] The plurality of terminals 2 are housed in corresponding terminal slots 14 within the two longitudinal side walls 12, one by one. Some of the terminals 2 within each longitudinal side wall 12 are configured as double-layer terminals, i.e., at least a portion of the terminal slots 14 are configured with double-layer terminals (this can be a single terminal slot 14 or multiple, spaced-apart terminal slots). The remaining terminal slots 14 are single-layer terminals, each of which is fixed in place within the corresponding terminal slot 14 by insertion. In the position of the double-layer terminals, the two terminals 2 within each terminal slot 14 are embedded with a plug 3, which is inserted and fixed within the terminal slot 14.

[0049] The double-layer terminals include a lower terminal and an upper terminal. The structures of the lower and upper terminals of the single-layer terminals and double-layer terminals in the remaining terminal slots 14 are different. Each upper and lower terminal includes a fixing portion 21, which extends upward to form an arm portion 22. The end of the arm portion 22 protrudes toward the slot 11 to form a contact portion 23. The lower end of the fixing portion 21 is connected to a welding portion 24. The fixing portion 21 of each upper terminal protrudes outward from the outer side of the slot 11 to form a retaining portion 25, which is fixed to the inner wall of the terminal slot 14. The contact portion 23 of the upper terminal and the contact portion 23 of the lower terminal are oriented in the same direction, with the contact portion 23 of the upper terminal being higher than the contact portion 23 of the lower terminal. The welding portion 24 of the upper terminal is flush with the welding portion 24 of the lower terminal, and the welding portion 24 of the upper terminal and the welding portion 24 of the lower terminal face opposite directions.

[0050] Each of the single-layer terminals includes a second fixing portion 26, which extends upward to form an arm portion 27, the end of which protrudes toward the slot side to form a contact portion 28, and the lower end of the second fixing portion 26 is connected to the welding portion 29. A snap-in 261 is provided on the second fixing portion 26, and a card block 141 that matches the snap-in 261 is provided on the inner wall of the terminal slot 14. The card block 141 connects the two side walls of the terminal slot 14 along the length direction of the insulating body, and one side of the snap-in 261 protrudes out to clamp and fix it on the card point 262 on the card block 141. The arm portion 27 and the contact portion 28 of the single-layer terminal are flush with the arm portion 1 22 and the contact portion 1 23 of the lower-layer terminal respectively. The welding portion 29 of the single-layer terminal is in the same direction and flush with the welding portion 1 24 of the upper-layer terminal, and in the opposite direction to the welding portion 1 24 of the lower-layer terminal. In addition, the welding portion 29 of the single-layer terminal and the welding portion 1 24 of the upper-layer terminal are both facing the outside of the insulating body 1, and the welding portion 1 24 of the lower-layer terminal is facing the inside of the insulating body 1.

[0051] The plug 3 includes a main body 31. The top of the main body 31 extends to form a protruding portion 32 on both the side closest to the slot 11 and the side away from the slot 11. A notch 33 is formed between the two protruding portions 32. The main body 31 and the two protruding portions 32 form a U-shaped structure. The protruding portion 32 on the side away from the slot 11 extends outward to form a retaining portion 34, which is secured to the inner wall of the terminal slot 14. Each fixing portion 21 is embedded and molded with the main body 31 of the plug 3, and each arm 22 extends out of the top of the plug 3. Specifically, the arm 22 of the lower terminal extends from the notch 33, while the arm 22 of the upper terminal extends from the top of the protruding portion 32 on the side away from the slot 11. The retaining portion 25 of the upper terminal extends out of the main body 31 of the plug 3. The dual retaining action of the retaining portion 25 and the retaining portion 34 secures the plug 3 within the terminal slot 14 of the insulating body 1. The bottom surface of the main body 31 is substantially flush with the bottom surface of the insulating body 1 .

[0052] Compared with the prior art, the beneficial effects of the present invention are mainly reflected in: by locally setting up double-layer terminals, the number of terminals is increased on the basis of the traditional two-row single-row terminals, thereby increasing the signal transmission channel, so that the signal transmission speed is greatly improved; by embedding the double-layer terminals and the plug 3 together, only allowing the plug 3 to be fixed in the terminal groove 14 in an insertion-fixed manner, the assembly error rate can be reduced, and the single-layer terminal is fixed in the terminal groove 14 in an insertion-fixed manner, which can reduce the embedded molding process and reduce the manufacturing cost; the welding part 29 of the single-layer terminal and the welding part 1 24 of the upper terminal of the double-layer terminal are designed to face the outside of the insulating body 1, which is not only convenient for checking the welding effect, but also more conducive to PCB routing.

[0053] In other embodiments, Figure 15-16 As shown, the insulating body 1 has an ear clip 4 mounted on one tower portion 13, and a metal latch structure 5 with a spring-loaded anti-retraction mechanism 51 mounted on the other tower portion 13. The ear clip 4 and the metal latch structure are respectively fastened to the two sides of the electronic module 6 inserted into the slot 11 to secure the electronic module 6. Using a single-sided ear clip saves space when the ear clip is open.

[0054] In other embodiments, Figure 17-20 As shown, the second soldering portion 29 of the single-layer terminal is aligned with and flush with the first soldering portion 24 of the lower-layer terminal, and faces the opposite direction to the first soldering portion 24 of the upper-layer terminal. Furthermore, the second soldering portion 29 of the single-layer terminal and the first soldering portion 24 of the lower-layer terminal both face the inside of the insulating body 1, while the first soldering portion 24 of the upper-layer terminal faces the outside of the insulating body 1. Designing the second soldering portion 29 of the single-layer terminal to face the same direction as the first soldering portion 24 of the lower-layer terminal of the double-layer terminal ensures that the number of soldering portions facing the same direction is greater than the number facing opposite directions, making it easier to inspect the welding results.

[0055] In other embodiments, the welding portion 1 24 of the upper terminal and the welding portion 1 24 of the lower terminal in each longitudinal side wall 12 face in the same direction.

[0056] The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A high-speed communication memory card edge connector, characterized in that: include: An insulating body having a longitudinal slot recessed downward from the top surface for inserting an electronic module, a plurality of terminal slots respectively provided in longitudinal side walls on both sides of the slot, and an ear clip receiving space and a pivoting portion for pivotally connecting the ear clip provided at at least one end of the insulating body; At least one ear clip pivotally connected to one end of the insulating body; Multiple terminals are respectively accommodated in corresponding terminal grooves in the two longitudinal side walls. At least some of the terminal grooves are provided with double-layer terminals, and the remaining terminal grooves are provided with single-layer terminals. Each single-layer terminal is fixed in the corresponding terminal groove by plug-in. In the position of the double-layer terminal, the two terminals in each terminal groove are embedded with a plug, and the plug is fixed in the terminal groove by plug-in. The double-layer terminal comprises a lower layer terminal and an upper layer terminal; Each of the upper terminal and the lower terminal includes a fixing portion 1, which is embedded and molded together with the plug. The fixing portion 1 extends upward to form an arm portion 1 extending out of the top of the plug. The end of the arm portion 1 protrudes toward the slot to form a contact portion 1. The lower end of the fixing portion 1 is connected to the welding portion 1. Each of the single-layer terminals includes a second fixing portion, which extends upward to form a second arm portion, the end of which protrudes toward the slot side to form a second contact portion, and the lower end of the second fixing portion is connected to the second welding portion.

2. The high-speed communication memory card edge connector according to claim 1, wherein: The welding portion 1 of one layer of the double-layer terminal faces the same direction as the welding portion 2 of the single-layer terminal, and the welding portion 1 of the other layer of the double-layer terminal faces the opposite direction to the welding portion 2 of the single-layer terminal.

3. The high-speed communication memory card edge connector according to claim 1, wherein: The structures of the lower layer terminals and upper layer terminals of the single-layer terminals and double-layer terminals in the remaining terminal slots are different.

4. The high-speed communication memory card edge connector according to claim 1, wherein: The contact portion 1 of the upper terminal is higher than the contact portion 1 of the lower terminal, the welding portion 1 of the upper terminal is flush with the welding portion 1 of the lower terminal, and the welding portion 1 of the upper terminal and the welding portion 1 of the lower terminal face the same direction or face opposite directions.

5. The high-speed communication memory card edge connector according to claim 1, wherein: The fixing portion of each upper terminal protrudes outward away from the outer side of the slot to form a buckling portion extending out of the plug, and the buckling portion is clamped and fixed on the inner wall of the terminal slot.

6. The high-speed communication memory card edge connector according to claim 1, wherein: The plug includes a main board body, the top of the main board body protrudes on the side close to the slot and the side away from the slot to form a protruding portion, there is a notch between the two protruding portions, the protruding portion away from the slot side protrudes outward to form a holding portion away from the slot, the holding portion is clamped and fixed on the inner wall of the terminal slot, an arm of the lower terminal protrudes from the notch, and an arm of the upper terminal protrudes from the top of the protruding portion away from the slot side.

7. The high-speed communication memory card edge connector according to claim 1, wherein: The second welding portion of the single-layer terminal is oriented in the same direction as the first welding portion of the upper terminal of the double-layer terminal, and in the opposite direction to the first welding portion of the lower terminal of the double-layer terminal; or, the second welding portion of the single-layer terminal is oriented in the opposite direction to the first welding portion of the upper terminal of the double-layer terminal, and in the same direction as the first welding portion of the lower terminal of the double-layer terminal.

8. The high-speed communication memory card edge connector according to claim 7, wherein: The second welding portion of the single-layer terminal and the first welding portion of the upper-layer terminal of the double-layer terminal are both directed toward the outside of the insulating body.

9. The high-speed communication memory card edge connector according to claim 1, wherein: The second fixing portion is provided with a bayonet, and the inner wall of the terminal slot is provided with a clamping block that matches the bayonet, and one side of the bayonet protrudes out to clamp and fix the clamping point on the clamping block.

10. The high-speed communication memory card edge connector according to any one of claims 1 to 9, characterized in that: The other end of the insulating body is provided with a metal locking structure for locking the electronic module.

11. The high-speed communication memory card edge connector according to claim 10, wherein: The metal lock card structure has a spring-type anti-retraction structure.

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