A fine-pitch board-to-board connector with high manufacturability and small volume

Abstract

The application discloses a fine-pitch board-to-board connector with high manufacturability and small volume, which comprises a socket and a plug, the plug is inserted into a first slot of the socket, a buckling boss is inserted into a second slot of the plug, and a fourth elastic U-shaped part of the plug is inserted into a U-shaped elastic cavity of a first terminal; an accommodating cavity is arranged along the length direction of the buckling boss, two abutting plates are arranged along the length direction of the accommodating cavity, and abutting blocks are arranged on the sides of the two abutting plates away from each other, the abutting blocks correspond to the first terminals one by one, the abutting blocks pass through the buckling boss and abut against the first terminals, and a driving mechanism for pushing the abutting blocks out of the buckling boss is arranged between the two abutting plates. The application has the effect of improving the accuracy and stability of signal transmission of the board-to-board connector.

Description

Technical Field

[0001] This invention relates to the field of connectors, and more particularly to a fine-pitch board-to-board connector with high manufacturability and small size. Background Technology

[0002] There are many types of existing electrical connectors and their combinations. With the development of the computer and information industry, mobile devices are gradually becoming smaller and lighter. In particular, with the development of portable electronic devices and the continuous enhancement of their functions, the required board-to-board connectors are gradually becoming smaller. However, in order to ensure the accuracy and stability of telecommunication signal transmission, the arrangement of conductive terminals between board-to-board connectors is becoming denser and denser. Therefore, the construction, assembly and contact method of the terminals are particularly important.

[0003] Board-to-board connectors consist of a plug and a socket. During connection, the plug is inserted into the socket to establish electrical connection. The plug and socket are secured by the terminals on the plug being inserted into the terminals on the socket, and the interlocking force between the terminals creates a locking mechanism. However, due to prolonged compression, the elastic force between the plug and socket terminals gradually decreases, making them prone to loosening during use, and even detachment during shaking. Furthermore, during manufacturing, transportation, and assembly, external factors can cause changes in the elastic force of the connector terminals, further reducing the interlocking force between the plug and socket terminals and leading to loosening. This results in inaccurate and unstable signal transmission from the board-to-board connector. Summary of the Invention

[0004] To improve the accuracy and stability of signal transmission in board-to-board connectors, this application provides a fine-pitch board-to-board connector with high manufacturability and small size.

[0005] The fine-pitch board-to-board connector with high manufacturability and small size provided in this application adopts the following technical solution:

[0006] A fine-pitch board-to-board connector with high manufacturability and small size includes a socket and a plug. The socket has a first slot on one side for inserting the plug, and a locking boss is provided at the bottom of the first slot. The plug has a second slot on one side for inserting the locking boss. First terminals are provided along both sides of the locking boss, and second terminals are provided along both sidewalls of the second slot. Both the first and second terminals are elongated. The first terminal is bent to form a U-shaped elastic cavity, which is engaged between the locking boss and the sidewall of the first slot. The end of the first terminal near the locking boss is bent towards the U-shaped elastic cavity. The opening is small and the cavity is large. The other end of the first terminal extends out of the socket and connects to the circuit board. The second terminal is bent to form a fourth elastic U-shaped part, which is snapped into the cavity of the U-shaped elastic cavity. The first terminal and the second terminal are connected and fixed by mutual compression. A receiving cavity is provided along the length direction of the fastening boss. Two abutting plates are provided along the length direction of the receiving cavity. Abutting blocks are provided on the side of the two abutting plates that are far apart from each other. The abutting blocks correspond one-to-one with the first terminals. The abutting blocks pass through the fastening boss and abut against the first terminals. A driving mechanism for pushing the abutting blocks out of the fastening boss is provided between the two abutting plates.

[0007] By adopting the above technical solution, when connecting the plug and socket, the plug is inserted into the first slot, the locking boss is inserted into the second slot, and the fourth elastic U-shaped part is inserted into the U-shaped elastic cavity of the first terminal. Because the opening of the U-shaped elastic cavity is small and the chamber is large, the U-shaped elastic cavity fixes the fourth elastic U-shaped part. When the elastic force of the U-shaped elastic cavity clamping the fourth elastic U-shaped part decreases, the contact between the first terminal and the second terminal is not good enough. The driving mechanism drives the two abutting plates to move away from each other, and the abutting plates drive the abutting block to move towards the first terminal. The abutting block presses the first terminal, and the first terminal further presses against the fourth elastic U-shaped part. The U-shaped elastic cavity and the fourth elastic U-shaped part are tightly pressed together, and the first terminal and the second terminal are not easy to loosen. This makes the first terminal and the second terminal have good contact, which is beneficial to improving the accuracy and stability of the signal transmission of the board-to-board connector.

[0008] Optionally, the driving mechanism includes a sliding plate, a limiting plate, and an elastic plate. The sliding plate is arranged along the length direction of the abutment plate and is located between the two abutment plates. The abutment plates abut against the sliding plate. The top of the sliding plate extends out of the top surface of the fastening boss. The limiting plate is arranged along the length direction of the sliding plate and is fixedly connected to the bottom end face of the sliding plate. There are two elastic plates arranged along the length direction of the sliding plate. The two elastic plates are respectively arranged on the two sides of the sliding plate. The top and bottom of the elastic plates are fixedly connected to the sliding plate. The middle of the elastic plate is arched. The abutment plate is located between the elastic plate and the limiting plate.

[0009] By adopting the above technical solution, when the abutment block needs to press the first terminal, during the process of the fourth elastic U-shaped part continuing to be inserted into the U-shaped elastic cavity, the bottom of the second slot abuts the top of the slide plate, the plug pushes the slide plate downward, and the slide plate drives the elastic piece to move downward. Since the elastic piece is arched, the elastic piece slides between the two abutment plates, and the two elastic pieces press the two abutment plates away from each other. The abutment plates can then push the abutment block to press the first terminal without the need to introduce other power sources. The push of the plug can improve the convenience of personnel installation.

[0010] Optionally, each end of the socket is provided with a first fixing piece, which wraps around the end of the socket and is used to connect the circuit board. The first fixing piece located in the first slot is provided with a notch. Each end of the plug is provided with a placement opening, and each end of the plug is provided with an elastic card. The elastic card is placed in the placement opening, and one end of the elastic card is engaged with the side wall of the notch.

[0011] Optionally, the plug has a second fixing piece at both ends, the second fixing piece wraps around the end of the plug, the elastic card includes a connecting strip and a snap-fit ​​strip, the connecting strip is vertically arranged, the top end of the connecting strip is connected to the side of the second fixing piece located in the second slot, the snap-fit ​​strip is disposed in the placement opening, the bottom end of the snap-fit ​​strip is connected to the bottom end of the connecting strip, and the top end of the snap-fit ​​strip abuts against the side wall of the notch, the second fixing piece is used to connect another circuit board.

[0012] By adopting the above technical solution, when the plug and socket are connected, the locking strip is squeezed towards the connecting strip by the first fixing piece, and the locking strip retracts into the placement opening. When the top of the locking strip reaches the notch, the locking strip enters the notch under the action of elasticity, and the end of the locking strip is engaged with the side wall of the notch. The plug is further fixed by the socket, thereby further improving the stability of the plug and socket connection.

[0013] Optionally, a pushing block is provided at both ends of the receiving cavity. The pushing block is slidably connected to the bottom surface of the receiving cavity. The pushing block corresponds to the placement port one by one. The end of the pushing block near the placement port extends out of the fastening boss. A pushing member is provided in the receiving cavity for pushing the pushing block to press against the elastic card.

[0014] By adopting the above technical solution, when the elastic card is engaged with the notch of the first fixing piece, the pushing member pushes the pushing block, and the pushing block pushes the elastic card. The elastic card is squeezed and further pressed against the notch of the first fixing piece, thereby improving the stability of the engagement between the elastic card and the first fixing piece.

[0015] Optionally, the pushing member includes two elastic connecting plates, one end of each of the two elastic connecting plates is connected to the bottom surface of the limiting plate, the two elastic connecting plates are respectively located at both ends of the limiting plate, and the ends of the two elastic connecting plates away from the limiting plate are respectively fixedly connected to the sides of the two pushing blocks that are close to each other.

[0016] By adopting the above technical solution, when the plug and socket are closed, the plug presses down on the sliding plate, which in turn moves the limiting plate downwards. The limiting plate then moves the elastic connecting plate downwards, and the elastic connecting plate pushes the pushing block, causing the pushing block to slide out of the engaging boss and move towards the elastic card. The pushing block then presses against the elastic card. No other power source is needed; the movement of the pushing block is driven by the downward stroke of the limiting plate, thus improving the ease of operation for personnel.

[0017] Optionally, a switch assembly is provided at both ends of the socket. The switch assembly is used to release the elastic card from the abutment state with the side wall of the notch. A reset elastic assembly is provided on the bottom surface of the receiving cavity. The top of the reset elastic assembly abuts against the bottom surface of the limiting plate.

[0018] By adopting the above technical solution, the switch assembly releases the elastic card from the notch sidewall, and the limit plate is pushed upward under the action of the elastic component, so that the plug and socket are automatically separated without the need for manual peeling by the operator, thereby improving the convenience of operation for the operator.

[0019] Optionally, both ends of the socket are provided with working cavities. The switch assembly includes a button and an arc-shaped spring. The button passes through the working cavity, with one end abutting against the end of the elastic card that abuts against the side wall of the notch. The other end of the button extends out of the socket. The arc-shaped spring is disposed in the working cavity, with both ends abutting against the side wall of the working cavity near the elastic card. The button passes through the arc-shaped spring, and a retaining ring is fixedly connected to the periphery of the button. The retaining ring abuts against the side of the arc-shaped spring away from the elastic card.

[0020] By adopting the above technical solution, when it is necessary to disassemble the socket and plug, pressing the button causes the button to squeeze the arc-shaped spring through the retaining ring. The arc-shaped spring deforms under force, and the button extends into the first slot. The button abuts against the elastic card, releasing the elastic card from the side wall of the notch. The reset elastic component pushes the limiting plate upward, the limiting plate pushes the sliding plate, and the sliding plate pushes the plug. The elastic card passes over the notch, and the plug and socket can be disassembled. Releasing the button causes it to automatically reset under the action of the arc-shaped spring, allowing it to be used again next time. This improves the convenience of disassembling the plug and socket.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. When connecting the plug and socket, the plug is inserted into the first slot, the locking boss is inserted into the second slot, and the fourth elastic U-shaped part is inserted into the U-shaped elastic cavity of the first terminal. Because the opening of the U-shaped elastic cavity is small and the chamber is large, the U-shaped elastic cavity fixes the fourth elastic U-shaped part. When the elastic force of the U-shaped elastic cavity on the fourth elastic U-shaped part decreases, the contact between the first terminal and the second terminal is not good enough. The driving mechanism drives the two abutting plates to move away from each other, and the abutting plates drive the abutting block to move towards the first terminal. The abutting block presses the first terminal, and the first terminal is further pressed towards the fourth elastic U-shaped part. The U-shaped elastic cavity and the fourth elastic U-shaped part are tightly pressed together, and the first terminal and the second terminal are not easy to loosen. This makes the contact between the first terminal and the second terminal good, which is beneficial to improving the accuracy and stability of the signal transmission of the board-to-board connector.

[0023] 2. When the abutment block needs to press the first terminal, as the fourth elastic U-shaped part continues to be inserted into the U-shaped elastic cavity, the bottom of the second slot abuts the top of the slide plate. The plug pushes the slide plate downward, and the slide plate drives the elastic piece to move downward. Since the elastic piece is arched, the elastic piece slides between the two abutment plates. The two elastic pieces press the two abutment plates away from each other, and the abutment plates can push the abutment block to press the first terminal. There is no need to introduce other power sources. The push of the plug can improve the convenience of personnel installation.

[0024] 3. When it is necessary to disassemble the socket and plug, press the button. The button squeezes the arc-shaped spring through the retaining ring. The arc-shaped spring deforms under force, and the button extends into the first slot. The button abuts against the elastic card, releasing the elastic card from the side wall of the notch. The reset elastic component pushes the limit plate upward. The limit plate pushes the slide plate, and the slide plate pushes the plug. The elastic card passes over the notch, and the plug and socket can be disassembled. Release the button, and the button will automatically reset under the action of the arc-shaped spring, so it can be used again next time. This can improve the convenience of personnel disassembling plugs and sockets. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the board-to-board connector structure according to an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the board-to-board connector from another perspective in an embodiment of this application.

[0027] Figure 3 This is a cross-sectional structural diagram of the end face of the board-to-board connector in an embodiment of this application.

[0028] Figure 4 This is a three-dimensional cross-sectional view of the side of the board-to-board connector according to an embodiment of this application.

[0029] Figure 5 This is a cross-sectional view of the side of the board-to-board connector in an embodiment of this application.

[0030] Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Socket; 11. First slot; 12. Snap-fit ​​boss; 121. Receiving cavity; 122. Abutting plate; 123. Abutting block; 124. Pushing block; 13. First fixing piece; 131. Notch; 14. Working cavity; 15. Slot; 2. Plug; 21. Second slot; 22. Placement opening; 23. Elastic clip; 231. Connecting strip; 232. Snap-fit ​​strip; 24. Second fixing piece; 3. First terminal; 302. Anti-disengagement opening; 31. First welding part; 32. 33. A second elastic U-shaped part; 34. A third elastic U-shaped part; 4. A second terminal; 41. A fourth elastic U-shaped part; 411. A protrusion; 42. A second welding part; 5. A drive mechanism; 51. A sliding plate; 52. A limiting plate; 53. An elastic sheet; 6. A pushing member; 61. An elastic connecting plate; 7. A switch assembly; 71. A button; 711. A retaining ring; 72. An arc-shaped spring; 8. A reset elastic assembly; 81. A base plate; 82. A top plate; 83. An elastic reset sheet. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses a fine-pitch board-to-board connector with high manufacturability and small size. (Refer to...) Figure 1 and Figure 2The board-to-board connector includes a socket 1 and a plug 2, both of which are square. A first slot 11 for inserting the plug 2 is provided on one side of the socket 1, extending along the length of the socket 1. A locking boss 12, rectangular in shape, is provided at the center of the bottom of the first slot 11, extending along the length of the first slot 11. Multiple first terminals 3 are provided on both sides of the locking boss 12, evenly distributed along the length of the locking boss 12. The sidewalls of the first slot 11 and the locking boss 12... The side walls on both sides are provided with corresponding slots 15, which are used to engage the first terminal 3. The first terminal 3 extends out of the bottom surface of the socket 1. The plug 2 is provided with a second slot 21 on one side for engaging the protrusion 12. The second slot 21 is provided along the length of the plug 2. Multiple second terminals 4 are provided on both sides of the second slot 21. The second terminals 4 are distributed along the length of the second slot 21. The side walls on both sides of the second slot 21 are also provided with slots 15, which are used to engage the second terminals 4. The second terminals 4 correspond one-to-one with the first terminals 3.

[0035] Reference Figure 3 The first terminal 3 and the second terminal 4 extend into a long strip shape. The first terminal 3 includes a first welding part 31, a first elastic U-shaped part 32, a second elastic U-shaped part 33, and a third elastic U-shaped part 34. The first welding part 31 is horizontally disposed on the bottom surface of the socket 1. The first elastic U-shaped part 32 is disposed in the first slot 11 with its opening facing downwards. One end of the first welding part 31 is integrally connected to the end of the first elastic U-shaped part 32 away from the fastening boss 12. The first welding part 31 extends outwards from the bottom surface of the socket 1 and is connected to the circuit board. The second elastic U-shaped part 33 is disposed in the first slot 11 with its opening facing upwards. One end of the second elastic U-shaped part 33 is integrally connected to the first elastic U-shaped part 4 away from the first elastic U-shaped part 12. The end of the U-shaped portion 32 away from the first welding portion 31 is integrally connected; the third elastic U-shaped portion 34 is disposed in the first slot 11, the opening of the third elastic U-shaped portion 34 faces downward, the end of the third elastic U-shaped portion 34 near the fastening boss 12 is integrally connected to the end of the second elastic U-shaped portion 33 away from the first elastic U-shaped portion 32, the third elastic U-shaped portion 34 is inclined towards the first elastic U-shaped portion 32, the first elastic U-shaped portion 32 abuts against the slot 15 of the side wall of the first slot 11, the connecting side of the second elastic U-shaped portion 33 and the third elastic U-shaped portion 34 abuts against the slot 15 of the fastening boss 12, and the first elastic U-shaped portion 32 and the third elastic U-shaped portion 34 form a U-shaped elastic cavity through the second elastic U-shaped portion 33.

[0036] Reference Figure 3The second terminal 4 includes a second welding part 42 and a fourth elastic U-shaped part 41. The second welding part 42 is horizontally disposed on the outer top surface of the plug 2. The opening of the fourth elastic U-shaped part 41 faces upward. The fourth elastic U-shaped part 41 is inserted into the side plate of the socket 1 and snapped into the slot 15. One side of the fourth elastic U-shaped part 41 is located outside the plug 2, and the other side of the fourth elastic U-shaped part 41 is located inside the second slot 21. One end of the fourth elastic U-shaped part 41 located in the second slot 21 is integrally connected to one end of the second welding part 42. The other end of the second welding part 42 extends outward from the plug 2 and is connected to another circuit board. The fourth elastic U-shaped part 41 is disposed inside the second elastic U-shaped part 33 and abuts between the first elastic U-shaped part 32 and the third elastic U-shaped part 34.

[0037] Reference Figure 3 An anti-detachment opening 302 is provided on the side of the connection between the first elastic U-shaped part 32 and the second elastic U-shaped part 33 near the third elastic U-shaped part 34. The vertical cross section of the anti-detachment opening 302 is trapezoidal. A protrusion 411 is integrally formed on the side of the fourth elastic U-shaped part 41 near the first elastic U-shaped part 32. The protrusion 411 is engaged in the anti-detachment opening 302.

[0038] Reference Figure 4 The fastening boss 12 is provided with a receiving cavity 121, which is arranged along the length of the fastening boss 12. Two abutting plates 122 are arranged along the length of the receiving cavity 121. The two abutting plates 122 are parallel to each other and are parallel to the bottom surface of the receiving cavity 121. Multiple abutting blocks 123 are arranged on the side of the two abutting plates 122 that are far apart from each other. Each abutting block 123 corresponds to an adjacent first terminal 3. The abutting block 123 extends out of the fastening boss 12 and abuts against the third elastic U-shaped part 34 of the first terminal 3.

[0039] Reference Figure 4A drive mechanism 5 is provided between the two abutment plates 122 for pushing the abutment block 123 out of the engaging boss 12. The drive mechanism 5 includes a sliding plate 51, a limiting plate 52, and an elastic sheet 53. The sliding plate 51 is disposed in the receiving cavity 121 and is arranged along the length direction of the abutment plates 122. The sliding plate 51 is located between the two abutment plates 122, and the abutment plates 122 abut against the sliding plate 51. The top end of the sliding plate 51 extends out of the top surface of the engaging boss 12. The limiting plate 52 is disposed in the receiving cavity 121 and is arranged along the length direction of the sliding plate 51. 52 is fixedly connected to the bottom end face of the slide plate 51, and the abutment plate 122 is located on the top surface of the limiting plate 52; there are two elastic sheets 53, which are disposed in the receiving cavity 121. The two elastic sheets 53 are disposed along the length direction of the slide plate 51 and are respectively disposed on the two sides of the slide plate 51. The top and bottom of the elastic sheets 53 are fixedly connected to the slide plate 51. The middle of the elastic sheet 53 is arched. The abutment plate 122 is located between the elastic sheet 53 and the limiting plate 52. The bottom end of the abutment plate 122 is inserted between the abutment plate 122 and the slide plate 51.

[0040] To ensure a tighter connection between the first terminal 3 and the second terminal 4, the socket 1 head and socket 1 are connected. The plug 2 is inserted into the first slot 11, the locking boss 12 is inserted into the second slot 21, and the fourth elastic U-shaped part 41 is inserted into the U-shaped elastic cavity of the first terminal 3. The bottom of the second slot 21 abuts against the top of the slide plate 51. The plug 2 pushes the slide plate 51 downward, and the slide plate 51 drives the elastic piece 53 downward. Since the elastic piece 53 is arched, it slides between the two abutment plates 122. The two elastic pieces 53 press the two abutment plates 122 away from each other, and the abutment plates 122 can push the abutment block 123 to press the first terminal 3. The first terminal 3 is further pressed against the fourth elastic U-shaped part 41, and the U-shaped elastic cavity and the fourth elastic U-shaped part 41 are tightly pressed together. The first terminal 3 and the second terminal 4 are not easy to loosen, so that the first terminal 3 and the second terminal 4 have good contact, which is beneficial to improving the accuracy and stability of the signal transmission of the board-to-board connector.

[0041] Reference Figure 4The bottom of the receiving cavity 121 is provided with a reset elastic component 8, which includes a bottom plate 81, a top plate 82, and elastic reset pieces 83. The bottom plate 81 is located below the top plate 82. There are multiple elastic reset pieces 83, which are fixedly connected between the bottom plate 81 and the top plate 82. The top plate 82 abuts against the bottom surface of the limiting plate 52, and the bottom plate 81 abuts against the bottom surface of the receiving cavity 121. The limiting plate 52 compresses the elastic reset pieces 83 through the top plate 82 and the bottom plate 81. Pushing blocks 124 are provided at both ends of the receiving cavity 121. The two push blocks 124 are slidably connected to the bottom surface of the receiving cavity 121. The ends of the two push blocks 124 that are far apart from each other extend out of the fastening boss 12. The receiving cavity 121 is provided with a pusher 6 for pushing the push blocks 124 out of the receiving cavity 121. The pusher 6 includes two elastic connecting plates 61. One end of each elastic connecting plate 61 is fixedly connected to the bottom surface of the limiting plate 52. The two elastic connecting plates 61 are located at both ends of the top plate 82. The ends of the two elastic connecting plates 61 that are far away from the limiting plate 52 are fixedly connected to the two push blocks 124 that are close to each other.

[0042] Reference Figure 1 and Figure 4 Both ends of the socket 1 are provided with a first fixing piece 13, which covers the end of the socket 1 and is snapped onto the side wall of the end of the socket 1. The bottom end of the first fixing piece 13 is fixedly connected to the circuit board. A notch 131 is provided on the side wall of the first fixing piece 13 near the fastening boss 12. The notch 131 is aligned with the push block 124 and communicates with the bottom end of the first fixing piece 13. The notch 131 is located in the first slot 11. Both ends of the plug 2 are provided with a placement port 22, which communicates with the side of the plug 2 near the bottom surface of the socket 1 and is aligned with the push block 124. Both ends of the plug 2 are provided with a second fixing piece 24, which covers the end of the plug 2 and is snapped onto the side wall of the end of the plug 2. The bottom end of the second fixing piece 24 is fixedly connected to another circuit board and communicates with the placement port 22.

[0043] Reference Figure 5 An elastic card 23 is provided inside the placement opening 22. The elastic card 23 includes a connecting strip 231 and a snap-fit ​​strip 232. Both the connecting strip 231 and the snap-fit ​​strip 232 are elastic. The connecting strip 231 is vertically arranged and located inside the second slot 21. The top end of the connecting strip 231 is integrally formed on the side of the second fixing piece 24. The snap-fit ​​strip 232 is bent and arranged inside the placement opening 22. The bottom end of the snap-fit ​​strip 232 is integrally formed on the bottom end of the connecting strip 231. The top end of the snap-fit ​​strip 232 abuts against the side wall of the notch 131, and the end of the pushing block 124 abuts against the side of the connecting strip 231.

[0044] Reference Figure 5 and Figure 6 Both ends of the socket 1 are provided with working cavities 14, which are aligned with the notch 131. A switch assembly 7 is provided in the working cavity 14. The switch assembly 7 includes a button 71 and an arc-shaped spring 72. The button 71 passes through the working cavity 14. One end of the button 71 abuts against the snap-fit ​​strip 232 and one end of the side wall of the notch 131. The other end of the button 71 extends out of the socket 1. The arc-shaped spring 72 is provided in the working cavity 14. Both ends of the arc-shaped spring 72 abut against the side wall of the working cavity 14 near the snap-fit ​​strip 232. The button 71 passes through the middle position of the arc-shaped spring 72. A retaining ring 711 is integrally formed on the circumference of the button 71. The retaining ring 711 abuts against the side of the arc-shaped spring 72 away from the snap-fit ​​strip 232.

[0045] When it is necessary to disassemble the socket 1 and plug 2, press button 71. Button 71 compresses the arc-shaped spring 72 through the retaining ring 711. The arc-shaped spring 72 deforms under force, and button 71 extends into the first slot 11. Button 71 abuts against the retaining strip 232, releasing the contact state between the retaining strip 232 and the side wall of the notch 131. The elastic reset piece 83 resets and pushes the limiting plate 52 upward through the top plate 82. The limiting plate 52 pushes the sliding plate 51, and the sliding plate 51 pushes the plug 2. The retaining strip 232 passes over the notch 131, and the sliding plate 51 lifts the plug 2, so that the plug 2 can be disassembled from the socket 1. Release button 71, and button 71 will automatically reset under the action of the arc-shaped spring 72, so that it can be used again next time, thereby improving the convenience of personnel disassembling plug 2 and socket 1.

[0046] The implementation principle of a fine-pitch board-to-board connector with high manufacturability and small volume according to an embodiment of this application is as follows: After the plug 2 and socket 1 are engaged, the fourth elastic U-shaped part 41 is inserted into the U-shaped elastic cavity. During long-term compression and insertion / removal, the contact between the fourth elastic U-shaped part 41 and the U-shaped elastic cavity becomes loose. In order to make the connection between the first terminal 3 and the second terminal 4 tighter, the bottom of the second slot 21 abuts against the top of the slide plate 51. The plug 2 pushes the slide plate 51 downward, and the slide plate 51 drives the elastic piece 53 to move downward. Due to the elastic piece 53 is arched, and the elastic sheet 53 slides between the two abutment plates 122. The two elastic sheets 53 press the two abutment plates 122 away from each other, and the abutment plates 122 can push the abutment block 123 to press the first terminal 3. The first terminal 3 is further pressed against the fourth elastic U-shaped part 41. The U-shaped elastic cavity and the fourth elastic U-shaped part 41 are tightly pressed together, and the first terminal 3 and the second terminal 4 are not easy to loosen. This makes the first terminal 3 and the second terminal 4 have good contact, which is beneficial to improving the accuracy and stability of the signal transmission of the board-to-board connector.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fine-pitch board-to-board connector with high manufacturability and small size, comprising a socket (1) and a plug (2), wherein a first slot (11) for inserting the plug (2) is provided on one side of the socket (1), a locking boss (12) is provided at the bottom of the first slot (11), a second slot (21) for inserting the locking boss (12) is provided on one side of the plug (2), a first terminal (3) is provided along both sides of the locking boss (12), and a second terminal (4) is provided along both sidewalls of the second slot (21), characterized in that: Both the first terminal (3) and the second terminal (4) are elongated. The first terminal (3) is bent to form a U-shaped elastic cavity. The first terminal (3) is engaged between the fastening boss (12) and the side wall of the first slot (11). One end of the first terminal (3) near the fastening boss (12) is bent toward the U-shaped elastic cavity. The U-shaped elastic cavity has a small opening and a large chamber. The other end of the first terminal (3) extends out of the socket (1) and connects to the circuit board. The second terminal (4) is bent to form a fourth elastic U-shaped part (41). The fourth elastic U-shaped part (41) is engaged in the chamber of the U-shaped elastic cavity. The first end... The first terminal (3) and the second terminal (4) are connected and fixed by mutual compression; a receiving cavity (121) is provided along the length direction of the fastening boss (12), and two abutting plates (122) are provided along the length direction of the receiving cavity (121). Abutting blocks (123) are provided on the side of the two abutting plates (122) that are far apart from each other. The abutting blocks (123) correspond one-to-one with the first terminal (3). The abutting blocks (123) pass through the fastening boss (12) and abut against the first terminal (3). A driving mechanism (5) for pushing the abutting blocks (123) out of the fastening boss (12) is provided between the two abutting plates (122). The driving mechanism (5) includes a sliding plate (51), a limiting plate (52), and an elastic sheet (53). The sliding plate (51) is arranged along the length direction of the abutment plate (122), and the sliding plate (51) is located between the two abutment plates (122). The abutment plates (122) abut against the sliding plate (51). The top end of the sliding plate (51) extends out of the top surface of the fastening boss (12). The limiting plate (52) is arranged along the length direction of the sliding plate (51). The positioning plate (52) is fixedly connected to the bottom end face of the slide plate (51). There are two elastic pieces (53) arranged along the length direction of the slide plate (51). The two elastic pieces (53) are respectively arranged on the two sides of the slide plate (51). The top and bottom of the elastic pieces (53) are fixedly connected to the slide plate (51). The middle of the elastic piece (53) is arched. The abutment plate (122) is located between the elastic piece (53) and the positioning plate (52).

2. The fine-pitch board-to-board connector with high manufacturability and small size according to claim 1, characterized in that: The socket (1) has a first fixing piece (13) at both ends. The first fixing piece (13) wraps around the end of the socket (1) and is used to connect the circuit board. The first fixing piece (13) located in the first slot (11) has a notch (131). The plug (2) has a placement opening (22) at both ends. The plug (2) has an elastic card (23) at both ends. The elastic card (23) is placed in the placement opening (22). One end of the elastic card (23) is engaged with the side wall of the notch (131).

3. A fine-pitch board-to-board connector with high manufacturability and small size according to claim 2, characterized in that: The plug (2) has a second fixing piece (24) at both ends, the second fixing piece (24) wraps around the end of the plug (2), the elastic card (23) includes a connecting strip (231) and a snap-fit ​​strip (232), the connecting strip (231) is vertically arranged, the top end of the connecting strip (231) is connected to the side of the second fixing piece (24) located in the second slot (21), the snap-fit ​​strip (232) is arranged in the placement opening (22), the bottom end of the snap-fit ​​strip (232) is connected to the bottom end of the connecting strip (231), the top end of the snap-fit ​​strip (232) abuts against the side wall of the notch (131), and the second fixing piece (24) is used to connect another circuit board.

4. A fine-pitch board-to-board connector with high manufacturability and small size according to claim 2, characterized in that: Both ends of the receiving cavity (121) are provided with push blocks (124), the push blocks (124) are slidably connected to the bottom surface of the receiving cavity (121), the push blocks (124) correspond one-to-one with the placement opening (22), the end of the push block (124) near the placement opening (22) extends out of the fastening boss (12), and the receiving cavity (121) is provided with a pusher (6) for pushing the push blocks (124) to press against the elastic card (23).

5. A fine-pitch board-to-board connector with high manufacturability and small size according to claim 4, characterized in that: The pusher (6) includes two elastic connecting plates (61), one end of each elastic connecting plate (61) is connected to the bottom surface of the limiting plate (52), the two elastic connecting plates (61) are located at both ends of the limiting plate (52), and the ends of the two elastic connecting plates (61) away from the limiting plate (52) are fixedly connected to the sides of the two pushers (124) that are close to each other.

6. A fine-pitch board-to-board connector with high manufacturability and small size according to claim 5, characterized in that: Both ends of the socket (1) are provided with switch components (7), which are used to release the elastic card (23) from the side wall of the notch (131). The bottom surface of the receiving cavity (121) is provided with a reset elastic component (8), and the top of the reset elastic component (8) abuts against the bottom surface of the limiting plate (52).

7. A fine-pitch board-to-board connector with high manufacturability and small size according to claim 6, characterized in that: The socket (1) has working cavities (14) at both ends. The switch assembly (7) includes a button (71) and an arc-shaped spring (72). The button (71) is inserted into the working cavity (14). One end of the button (71) abuts against the elastic card (23) and the side wall of the notch (131). The other end of the button (71) extends out of the socket (1). The arc-shaped spring (72) is disposed in the working cavity (14). Both ends of the arc-shaped spring (72) abut against the side wall of the working cavity (14) near the elastic card (23). The button (71) passes through the arc-shaped spring (72). A retaining ring (711) is fixedly connected to the periphery of the button (71). The retaining ring (711) abuts against the side of the arc-shaped spring (72) away from the elastic card (23).

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