Single-sided compression contact connector

Abstract

The utility model discloses single -sided compression contact connector, a plurality of conductive terminal one one correspondence is contained in each terminal containing groove on the insulating body, and the conductive terminal includes the fixed part of being able to with the fixed connection of the side wall of the slot of the guqin, the elastic contact arm of being fixed on the fixed part and the welding portion, and the simply supported elastic arm of being fixed on the welding portion, and the elastic contact arm of being pressed elastically deformed is equipped with contact point, and the contact point projects on the insulating body upper end outside for the elastic contact chip module lower side surface's PAD, and the welding portion projects on the insulating body lower end outside, and the welding plane of welding portion downside can be flatly pasted on the PAD of circuit board and carries out the welding connection, and the elastic contact arm pressure deformation can keep the elastic contact with the simply supported elastic arm, and the conductive terminal of the utility model forms double -channel signal transmission when being used to connect chip module and circuit board, and the conductive terminal adopts the welding connection with the circuit board, avoids the circuit board gold plating technology, and reduces the circuit board generation cost.

Description

Technical Field

[0001] This utility model relates to a connector, and more particularly to a single-sided compression contact connector. Background Technology

[0002] The chip module 20 and the circuit board 30 are electrically connected through the flat connector 10. The conductive terminals of the connector have a crimped structure, with the terminals forming upper elastic contact points 101 and lower elastic contact points 102 extending outward from the upper and lower sides of the insulating body. When the connector is sandwiched between the chip module and the circuit board, the upper elastic contact points 101 and lower elastic contact points 102 of the connector terminals make tight contact with the PADs on the chip module and the circuit board respectively to achieve conduction. At the same time, when the conductive terminals are crimped, dual-channel signal transmission is formed, which improves the high-frequency performance of the module.

[0003] The existing connector's top and bottom press-fit structure requires chemical gold plating on both the chip module and the contact pads on the circuit board, resulting in high costs. Especially for the circuit board, because the press-fit module requires gold plating, the entire circuit board needs to be gold-plated, further increasing costs and severely hindering the widespread adoption of press-fit module structure products. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a single-sided compression contact connector, which can avoid gold plating on the circuit board PAD and reduce the cost of the circuit board.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a single-sided compression contact connector, including an insulating body and conductive terminals. A plurality of terminal receiving slots are spaced apart on the flat insulating body, and each conductive terminal can be received in a corresponding terminal receiving slot. Each conductive terminal includes a retaining part, an elastic contact arm, a soldering part, and a simply supported elastic arm. The retaining part of the conductive terminal can be fixedly connected to one side wall of the terminal receiving slot. One end of the elastic contact arm is fixedly disposed on the retaining part. The elastic contact arm can elastically deform under pressure. The elastic contact arm is provided with... There is a contact point that extends out of the outer side of the upper end of the insulating body. The contact point can elastically contact the PAD on the lower side of the chip module covering the upper side of the insulating body, thereby realizing the conduction between the conductive terminal and the PAD of the chip module. The welding part is fixedly disposed on the holding part and protrudes out of the outer side of the lower end of the insulating body. The welding plane on the lower side of the welding part can be flatly attached to the PAD of the circuit board for welding connection. One end of the simply supported elastic arm is fixedly disposed on the side wall of the welding part. The elastic contact arm can be deformed under pressure so that its other end can maintain elastic contact with the other end of the simply supported elastic arm.

[0006] As a further improvement of this utility model, the holding part, elastic contact arm, welding part and simply supported elastic arm of the conductive terminal are integrally formed structures of metal sheets through stamping and bending.

[0007] As a further improvement of this utility model, the welding part of the conductive terminal is a U-shaped structure formed by bending. The two side walls of the U-shaped structure are respectively connected to the holding part and one end of the simply supported elastic arm. The bottom surface of the U-shaped structure forms a welding plane. The gap formed between the convex arc surface formed between the bottom surface of the U-shaped structure and the two side walls and the PAD of the circuit board is the solder paste accommodating space during welding.

[0008] As a further improvement of this utility model, the elastic contact arm first extends upward at an angle from one end to the other to form an elastic cantilever segment, and then bends downward to form a closed-loop contact segment. The elastic cantilever segment and the closed-loop contact segment are connected by an upper convex arc segment to form a V-shaped structure or a U-shaped structure. The upper convex arc surface of the upper convex arc segment of the elastic contact arm forms the contact point.

[0009] As a further improvement of this utility model, the end of the closed-loop contact section of the elastic contact arm forms an upwardly inclined bent edge, and the arc-shaped convex surface formed between the bent edge and the closed-loop contact section is in close contact with the side wall of the other end of the simply supported elastic arm.

[0010] As a further improvement of this utility model, the simply supported elastic arm extends obliquely from bottom to top to form an elastic cantilever structure, and the arc-shaped convex surface at the other end of the elastic contact arm abuts against the upper side wall surface of the simply supported elastic arm.

[0011] As a further improvement of this utility model, the upper end of the simply supported elastic arm forms a contact slope with a gentle inclination, and the other end of the elastic contact arm forms a convex arc surface that abuts against the contact slope of the simply supported elastic arm.

[0012] As a further improvement of this utility model, the upper end of the simply supported elastic arm is bent to form a contact plane parallel to the welding plane, and the arc-shaped convex surface formed at the other end of the elastic contact arm is tightly pressed against the contact plane of the simply supported elastic arm.

[0013] As a further improvement of this utility model, the convex arc segment between the elastic cantilever segment and the closed-loop contact segment is a V-shaped structure with the opening facing downwards, and at least one opening slit is formed in the middle of the V-shaped structure.

[0014] As a further improvement of this utility model, the upper half of one end of the terminal receiving groove forms a retaining slot with increased width. The retaining part of the conductive terminal is a vertical flat plate structure with a width greater than that of the elastic contact arm, the welding part and the simply supported elastic arm. Interference protrusions are formed on both sides of the retaining part along its width direction. The retaining part of the conductive terminal is tightly inserted into the retaining slot, and the interference protrusions on its two sides are embedded and positioned with the inner side wall of the retaining slot. The lower end of the retaining part of the conductive terminal stops on the lower end surface of the retaining slot to limit the insertion depth.

[0015] The beneficial technical effects of this utility model are as follows: This utility model forms an elastic contact arm and a welding part on the holding part of the conductive terminal, and extends a simply supported elastic arm from the welding part. The elastic contact arm makes contact and conduction with the PAD of the chip module through a pressing method. The welding plane of the welding part is flatly welded to the PAD on the circuit board, so that the surface of the PAD on the circuit board does not need to be gold-plated, thereby avoiding the overall gold plating of the circuit board and reducing the production cost of the circuit board. At the same time, after the chip module is pressed on the connector, the elastic contact arm of the connector and the simply supported elastic arm maintain close contact and conduction, thereby forming a closed loop of conductive terminals, that is, forming dual-channel signal transmission and realizing the high-frequency performance of the module. Attached Figure Description

[0016] Figure 1 A 3D view of the electrical connection status of the chip module, connectors, and circuit board;

[0017] Figure 2 This is an exploded 3D view of the chip module, connector, and circuit board in a traditional structure.

[0018] Figure 3 A 3D view of the chip module;

[0019] Figure 4 A 3D view of the entire circuit board;

[0020] Figure 5 A 3D diagram of a traditional connector;

[0021] Figure 6 An exploded 3D view of a traditional connector;

[0022] Figure 7 A front view of the chip module and circuit board before crimping with a conventional connector;

[0023] Figure 8 Main view showing the contact status of the chip module and circuit board with the conventional connector;

[0024] Figure 9 A front view of the chip module and circuit board after crimping with traditional connectors;

[0025] Figure 10 This is a first perspective view of the conductive terminals of a traditional connector;

[0026] Figure 11 This is a second perspective view of the conductive terminals of a conventional connector;

[0027] Figure 12 This is a front view of the conductive terminals of a traditional connector.

[0028] Figure 13Front view of the conductive terminals of a traditional connector before they are pressed against the PADs of the chip module and circuit board;

[0029] Figure 14 This is a front view of the conductive terminals of a traditional connector after being pressed together by the PAD of the chip module and the circuit board.

[0030] Figure 15 An exploded perspective view of the chip module and circuit board electrically connected using the connector of the present invention;

[0031] Figure 16 This is a perspective view of the first type of connector of the present invention;

[0032] Figure 17 This is an exploded perspective view of the first type of connector of the present invention;

[0033] Figure 18 A front view of the chip module and circuit board before crimping the first type of connector of the present invention;

[0034] Figure 19 A front view showing the state of the first type of connector of the present invention in contact between the chip module and the circuit board;

[0035] Figure 20 A front view of the chip module and circuit board after the first type of connector of the present invention has been crimped together;

[0036] Figure 21 This is a first perspective view of the conductive terminals of the first type of connector of the present invention;

[0037] Figure 22 This is a second perspective view of the conductive terminals of the first type of connector of the present invention;

[0038] Figure 23 This is a front view of the conductive terminals of the first type of connector of the present invention;

[0039] Figure 24 This is a front view of the conductive terminals of the first type of connector of the present invention before they are pressed against the PAD of the chip module and the circuit board;

[0040] Figure 25 This is a front view of the conductive terminals of the first type of connector of the present invention after being pressed together by the PAD of the chip module and the circuit board;

[0041] Figure 26 This is a perspective view of the second type of connector of the present invention;

[0042] Figure 27 This is an exploded perspective view of the second type of connector of the present invention;

[0043] Figure 28 for Figure 27 Enlarged view of section A in the middle;

[0044] Figure 29 A front view of the chip module and circuit board before the second type of connector of the present invention is crimped;

[0045] Figure 30 Main view of the second type of connector state of the present invention for contact between chip module and circuit board;

[0046] Figure 31 A front view of the chip module and circuit board after the second type of connector of the present invention has been crimped together;

[0047] Figure 32 This is a first perspective view of the conductive terminals of the second type of connector of the present invention;

[0048] Figure 33 This is a second perspective view of the conductive terminals of the second type of connector of the present invention;

[0049] Figure 34 This is a front view of the conductive terminals of the second type of connector of the present invention;

[0050] Figure 35 This is a front view of the conductive terminals of the second type of connector of the present invention before they are pressed against the PAD of the chip module and the circuit board;

[0051] Figure 36 This is a front view of the conductive terminals of the second type of connector of the present invention after being pressed by the PAD of the chip module and the circuit board. Detailed Implementation

[0052] Example: A single-sided compression contact connector includes an insulating body 1 and conductive terminals 2. The flat insulating body 1 has a plurality of terminal receiving slots 11 spaced apart, and each conductive terminal 2 can be accommodated in a corresponding terminal receiving slot 11. Each conductive terminal 2 includes a retaining portion 21, an elastic contact arm 22, a soldering portion 23, and a simply supported elastic arm 24. The retaining portion 21 of the conductive terminal 2 can be fixedly connected to one side wall of the terminal receiving slot 11. One end of the elastic contact arm 22 is fixedly disposed on the retaining portion 21. The elastic contact arm 22 can elastically deform under pressure. The elastic contact arm 22 is provided with contact points 221. 21 extends outward from the upper end of the insulating body 1. The contact point 221 can elastically contact the PAD on the lower side of the chip module 20 covering the upper side of the insulating body 1, thereby realizing the conduction between the conductive terminal 2 and the PAD of the chip module 20. The welding part 23 is fixedly disposed on the holding part 21. The welding part 23 protrudes outward from the lower end of the insulating body 1. The welding plane 231 on the lower side of the welding part 23 can be flatly attached to the PAD of the circuit board 30 for welding connection. One end of the simply supported elastic arm 24 is fixedly disposed on the side wall of the welding part 23. The elastic contact arm 22 is deformed under pressure so that its other end can maintain elastic contact with the other end of the simply supported elastic arm 24.

[0053] The conductive terminal 2 of the connector is designed to extend outward from the elastic upper end of the insulating body 1 via an elastic contact arm 22 to form a press-fit conductive structure. Simultaneously, a solder part 23 protrudes outward from the lower end of the insulating body 1 to form a solder conductive structure. This allows the connector to be soldered onto the PAD of the circuit board 30, enabling the PAD of the circuit board 30 to achieve conductive connection with the connector without gold plating. This avoids gold plating on the front of the circuit board 30, significantly reducing the manufacturing process of the circuit board 30. The conductive terminal 2 of the connector also has a simply supported elastic arm 24 extending from the solder part 23. When the elastic contact arm 22 is subjected to downward pressure from the chip module 20, the contact point 2 on the elastic contact arm 22... 21 maintains close contact and conduction with the PAD on the chip module 20, while the other end of the elastic contact arm 22 maintains close contact and conduction with the simply supported elastic arm 24, thereby enabling the conductive terminal 2 of the connector to form a dual-channel signal transmission (one electrical signal travels along the PAD of the chip module 20, one section of the elastic contact arm 22 of the conductive terminal 2, the retaining part 21 of the conductive terminal 2, and the soldering part 23 of the conductive terminal 2 to the PAD of the circuit board 30; the other electrical signal travels along the PAD of the chip module 20, the other section of the elastic contact arm 22 of the conductive terminal 2, the simply supported elastic arm 24 of the conductive terminal 2, and the soldering part 23 of the conductive terminal 2 to the PAD of the circuit board 30), realizing the high-frequency performance of the module.

[0054] The retaining part 21, elastic contact arm 22, welding part 23, and simply supported elastic arm 24 of the conductive terminal 2 are integrally formed structures of metal sheets through stamping and bending. Using an integrally formed structure of metal sheets through stamping and bending results in a simple overall manufacturing process, low manufacturing cost, and high strength. The elastic contact arm 22 and simply supported elastic arm 24 have good elasticity and are not easily subjected to plastic deformation or breakage under pressure.

[0055] The welding portion 23 of the conductive terminal 2 is a U-shaped structure formed by bending. The two side walls of the U-shaped structure are respectively connected to one end of the retaining portion 21 and the simply supported elastic arm 24. The bottom surface of the U-shaped structure forms a welding plane 231. The gap between the convex arc surface formed between the bottom surface and the two side walls of the U-shaped structure and the PAD of the circuit board 30 serves as a space for accommodating solder paste 40 during welding. The welding portion 23 of the conductive terminal 2 adopts a U-shaped structure, allowing the two side walls of the U-shaped structure to connect with the retaining portion 21 and the simply supported elastic arm 24. Its bottom surface forms a welding plane 231 that flattens against the surface of the PAD of the circuit board 30. The rounded corners between the side walls and the bottom surface form a gap with the upper side of the PAD to accommodate solder paste 40, ensuring a firm weld. Alternatively, the welding portion 23 of the conductive terminal 2 can also be a flat plate structure formed by tearing. This is an equivalent alternative structure easily conceived by those skilled in the art based on this application and falls within the scope of protection of this application.

[0056] The elastic contact arm 22 first extends upward at an angle from one end to the other to form an elastic cantilever segment 222, and then bends downward to form a closed-loop contact segment 223. The elastic cantilever segment 222 and the closed-loop contact segment 223 are connected by an upper convex arc segment 224 to form a V-shaped structure or a U-shaped structure. The upper convex arc segment 224 of the elastic contact arm 22 forms a contact point 221. The elastic contact arm 22 is bent multiple times, and its elastic cantilever section 222 serves as a support section for compressive elastic deformation. It is bent downward to form a closed-loop contact section 223, which is used to contact the simply supported elastic arm 24 to form a closed-loop structure. The convex arc section 224 between the elastic cantilever section 222 and the closed-loop contact section 223 protrudes out of the upper outer side of the insulating body 1. The convex arc surface at the top of the arc is used to contact the PAD of the chip module 20. During the pressing down of the PAD of the chip module 20, the convex arc surface of the conductive terminal 2 slides relative to the PAD through the arc surface, which can avoid damaging the PAD surface of the chip module 20.

[0057] The end of the closed-loop contact section 223 of the elastic contact arm 22 forms an upwardly inclined bent edge 225. The arc-shaped convex surface formed between the bent edge 225 and the closed-loop contact section 223 is in close contact with the side wall of the other end of the simply supported elastic arm 24. The end of the closed-loop contact section 223 of the elastic contact arm 22 is bent to form an arc-shaped contact surface, preventing scratches on the side wall of the simply supported elastic arm 24 or jamming between the two, preventing them from sliding relative to each other.

[0058] The simply supported elastic arm 24 extends obliquely from bottom to top to form an elastic cantilever structure, and the arc-shaped convex surface at the other end of the elastic contact arm 22 abuts against the upper sidewall surface of the simply supported elastic arm 24. By extending obliquely upward, the simply supported elastic arm 24 keeps its contact position with the elastic contact arm 22 away from the soldering area, which can effectively prevent solder creep from affecting the contact.

[0059] The upper end of the simply supported elastic arm 24 forms a contact slope 241 with a gentle slope, and the other end of the elastic contact arm 22 forms a convex arc surface that abuts against the contact slope 241 of the simply supported elastic arm 24.

[0060] The upper end of the simply supported elastic arm 24 is bent to form a contact plane 242 parallel to the welding plane 231, and the arc-shaped convex surface formed at the other end of the elastic contact arm 22 abuts against the contact plane 242 of the simply supported elastic arm 24. The contact plane 242 preferably extends toward the inside of the closed loop formed by the conductive terminal 2 to reduce the overall size of the conductive terminal 2.

[0061] The convex arc segment 224 between the elastic cantilever segment 222 and the closed-loop contact segment 223 is a V-shaped structure with an opening facing downwards, and at least one opening slit 2241 is formed in the middle of the V-shaped structure. The convex arc segment 224 forms a V-shaped structure with an opening facing downwards, and its highest point contacts the PAD of the chip module 20, which can ensure stable contact.

[0062] The upper half of one end of the terminal receiving groove 11 forms a retaining slot 111 with increased width. The retaining part 21 of the conductive terminal 2 is a vertical flat plate structure with a width greater than that of the elastic contact arm 22, the welding part 23 and the simply supported elastic arm 24. Interference protrusions 211 are formed on both side walls of the retaining part 21 along its width direction. The retaining part 21 of the conductive terminal 2 is tightly inserted into the retaining slot 111, and the interference protrusions 211 on its side walls are embedded and positioned with the inner side wall of the retaining slot 111. The lower end of the retaining part 21 of the conductive terminal 2 stops on the lower end surface of the retaining slot 111 to limit the insertion depth. During assembly, the conductive terminal 2 is inserted into the terminal receiving groove 11 from top to bottom, and the retaining part 21 of the conductive terminal 2 is tightly inserted into the retaining slot 111. Due to the interference of the interference protrusions 211 on both sides of the conductive terminal 2 with the side wall of the retaining slot 111 of the insulating body 1, the conductive terminal 2 can be stopped and positioned. There can be one or more interference protrusions 211 on both sides of the retaining part 21. The interference protrusions 211 are preferably barbed to prevent them from falling off. The insertion depth of the conductive terminal 2 is limited by the contact between the lower end face of the retaining part 21 and the lower end face of the retaining slot 111, ensuring that the welding part 23 protrudes from the lower end of the insulating body 1 and the contact point 221 on the elastic contact arm 22 extends beyond the upper end of the insulating body 1.

Claims

1. A single-sided compression contact connector, comprising an insulating body (1) and conductive terminals (2), wherein a plurality of terminal receiving slots (11) are spaced apart on the flat insulating body, and each conductive terminal can be received in a corresponding terminal receiving slot, characterized in that: The conductive terminal includes a retaining part (21), an elastic contact arm (22), a welding part (23), and a simply supported elastic arm (24). The retaining part of the conductive terminal can be fixedly connected to one side wall of the terminal receiving groove. One end of the elastic contact arm is fixedly disposed on the retaining part. The elastic contact arm can be elastically deformed under pressure. The elastic contact arm is provided with a contact point (221). The contact point extends out of the outer side of the upper end of the insulating body. The contact point can elastically contact the PAD on the lower side of the chip module (20) covering the upper side of the insulating body, thereby realizing the conduction between the conductive terminal and the PAD of the chip module. The welding part is fixedly disposed on the retaining part. The welding part protrudes out of the outer side of the lower end of the insulating body. The welding plane (231) on the lower side of the welding part can be flatly attached to the PAD of the circuit board (30) for welding connection. One end of the simply supported elastic arm is fixedly disposed on the side wall of the welding part. The elastic contact arm can be elastically contacted with the other end of the simply supported elastic arm under pressure deformation.

2. The single-sided compression contact connector according to claim 1, characterized in that: The retaining part, elastic contact arm, welding part, and simply supported elastic arm of the conductive terminal are integrally formed structures of metal sheets through stamping and bending.

3. The single-sided compression contact connector according to claim 1, characterized in that: The welding part of the conductive terminal is a U-shaped structure formed by bending. The two side walls of the U-shaped structure are respectively connected to the holding part and one end of the simply supported elastic arm. The bottom surface of the U-shaped structure forms a welding plane. The gap between the convex arc surface formed between the bottom surface of the U-shaped structure and the two side walls and the PAD of the circuit board is the space for the solder paste (40) to be contained during welding.

4. The single-sided compression contact connector according to claim 1, characterized in that: The elastic contact arm extends upward from one end to the other to form an elastic cantilever segment (222), and then bends downward to form a closed-loop contact segment (223). The elastic cantilever segment and the closed-loop contact segment are connected by an upper convex arc segment (224) to form a V-shaped structure or a U-shaped structure. The upper convex arc surface of the upper convex arc segment of the elastic contact arm forms the contact point.

5. The single-sided compression contact connector according to claim 4, characterized in that: The end of the closed-loop contact section of the elastic contact arm forms an upwardly inclined bent edge (225), and the arc-shaped convex surface formed between the bent edge and the closed-loop contact section is in close contact with the side wall of the other end of the simply supported elastic arm.

6. The single-sided compression contact connector according to claim 5, characterized in that: The simply supported elastic arm extends obliquely from bottom to top to form an elastic cantilever structure, and the arc-shaped convex surface at the other end of the elastic contact arm abuts against the upper side wall surface of the simply supported elastic arm.

7. The single-sided compression contact connector according to claim 6, characterized in that: The upper end of the simply supported elastic arm forms a contact slope (241) with a gentle slope, and the other end of the elastic contact arm forms a convex arc surface that abuts against the contact slope of the simply supported elastic arm.

8. The single-sided compression contact connector according to claim 6, characterized in that: The upper end of the simply supported elastic arm is bent to form a contact plane (242) parallel to the welding plane, and the arc-shaped convex surface formed at the other end of the elastic contact arm is pressed against the contact plane of the simply supported elastic arm.

9. The single-sided compression contact connector according to claim 4, characterized in that: The convex arc segment between the elastic cantilever segment and the closed-loop contact segment is a V-shaped structure with the opening facing downwards, and at least one opening slit (2241) is formed in the middle of the V-shaped structure.

10. The single-sided compression contact connector according to claim 1, characterized in that: The upper half of one end of the terminal receiving groove forms a retaining slot (111) with increased width. The retaining part of the conductive terminal is a vertical flat plate structure with a width greater than that of the elastic contact arm, the welding part and the simply supported elastic arm. Interference protrusions (211) are formed on both sides of the retaining part along its width direction. The retaining part of the conductive terminal is tightly inserted into the retaining slot, and the interference protrusions on its two sides are embedded and positioned with the inner side wall of the retaining slot. The lower end of the retaining part of the conductive terminal stops on the lower end surface of the retaining slot to limit the insertion depth.

Images