Sinking plate type connector
By using a recessed connector design, the plastic shell and conductive terminals are soldered to the PCB board. Combined with a rotatable plastic cover and a limiting structure, the problems of large connector footprint and insufficient stability are solved, achieving space saving and stable connection.
Patent Information
- Application Number
- CN202520124892.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Conventional connectors take up a lot of space, affect the arrangement of electronic components, and their stability depends on the soldering effect. They are also prone to detaching from the PCB board when shaken.
The connector adopts a recessed design, with the plastic shell projecting across the cutout holes in the PCB board. It is then soldered to the PCB board using the external leads of the conductive terminals and soldering fixing pieces. Combined with a rotatable plastic cover and limiting structure, it ensures a stable connection between the conductive terminals and the FFC cable.
This reduces the space occupied by the connector on the PCB board, improves structural stability, and ensures the connectivity between the conductive terminals and the ribbon cable during the insertion process.
Smart Images
Figure CN223785371U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, and in particular to a recessed connector. Background Technology
[0002] Connectors, as important electrical components, are commonly used in electronic devices such as computers, mobile phones, tablets, and televisions. They are generally used in conjunction with PCB boards. However, conventional connectors are usually fixed to one side of the PCB board by soldering or other methods. For some special models of connectors, due to their large plastic shell size, they occupy a lot of space, consume usable area on the board, and affect the arrangement of other electronic components. Moreover, their stability depends on the soldering effect. If the soldering effect is poor, they can easily detach from the PCB board under shaking or other conditions, resulting in product defects.
[0003] Therefore, considering the aforementioned technical problems, it is necessary to provide a new technical solution. Utility Model Content
[0004] The purpose of this invention is to provide a recessed connector that can reduce space occupation and has a more stable structure.
[0005] To solve the above-mentioned technical problems, this utility model provides a recessed connector, the specific technical solution of which is as follows:
[0006] A recessed connector for mounting on a PCB board and communicating with circuits on the PCB board includes a plastic housing with a height greater than the thickness of the PCB board, multiple conductive terminals inserted into the plastic housing, and an FFC cable connected to the conductive terminals. The plastic housing has welding fixing pieces extending outwards on both sides near its bottom. A perforated hole is formed on the PCB board, and the plastic housing is installed in the perforated hole. The FFC cable is located on one side of the PCB board and inserted into the plastic housing. The welding fixing pieces are welded and fixed to the side of the PCB board away from the FFC cable.
[0007] Preferably, the FFC cable is inserted into the plastic housing from the front side. The back side of the plastic housing has multiple positioning grooves in the vertical direction, and the front side of the plastic housing has multiple contact grooves parallel to the FFC cable and adapted to the positions of the positioning grooves. The positioning grooves have through holes communicating with the contact grooves. The conductive terminal includes a main body installed in the positioning groove, and a contact part integrally connected to the main body, passing through the through hole and placed in the contact groove. The end of the FFC cable inserted into the plastic housing has a metal contact point, and the contact part is in close contact with the metal contact point.
[0008] Preferably, the conductive terminal further includes an upper fixing part and a lower fixing part located on the upper and lower sides of the contact portion, respectively. The upper fixing part and the lower fixing part are integrally connected to the main body, and the back of the plastic housing is provided with positioning holes that are adapted to the upper fixing part and the lower fixing part, respectively.
[0009] Preferably, the main body is also integrally connected with an external pin, which is located at the bottom of the main body and is arranged in the opposite direction to the contact portion and extends outward from the plastic shell. The end of the external pin away from the main body is welded and fixed to the PCB board, and the external pin and the welding fixing piece are fixed on the same side of the PCB board.
[0010] Preferably, the top of the plastic housing is rotatably provided with a plastic cover, the top of the plastic housing is open and closed by the plastic cover, the plastic housing has swivel grooves on both sides near the top, and the plastic cover is provided with a snap-fit shaft that matches the swivel groove to facilitate the rotation of the plastic cover.
[0011] Preferably, the plastic cover has a stepped cross-section and the end near the front of the plastic shell is lower than the end away from the front of the plastic shell. The upper fixing part is Z-shaped and the end near the front of the plastic shell is at the highest point. When the plastic cover is open, the stepped surface presses against the upper fixing part, thereby causing the conductive terminal to move down as a whole. When the plastic cover is closed, the conductive terminal is reset.
[0012] Preferably, the snap-fit shaft is located at one end of the plastic cover near the front of the plastic housing, the top surface of the shaft groove is stepped, and the height of the end of the shaft groove near the front of the plastic housing is lower than the height of the other end. Limiting protrusions are provided on both sides of the plastic cover, the plane of the limiting protrusions is higher than the plane of the snap-fit shaft, and the position of the limiting protrusions is adapted to the height of the end of the shaft groove away from the front of the plastic housing.
[0013] Preferably, the plastic cover has multiple clearance holes, the position and width of which are adapted to the upper fixing part to prevent interference between the plastic cover and the upper fixing part when the plastic cover is closed.
[0014] Preferably, the bottom ends of both sides of the plastic shell are provided with L-shaped fixing grooves, and the welding fixing piece is snapped and fixed in the fixing groove.
[0015] The recessed connector of this utility model has the following beneficial effects:
[0016] This utility model discloses a recessed connector. An insulating plastic shell is projected across a perforated hole on a PCB board, with a portion of the shell recessed below the board. The connector is then fixed to the PCB board via the external leads of conductive terminals and welding fasteners. This reduces the height of the connector body protruding from the PCB board, thereby reducing the space occupied by the electronic device on the board and effectively minimizing the overall thickness of the electronic device. Furthermore, the recessed structure helps to limit the movement of the plastic shell, effectively improving structural stability. In addition, during the rotation of the plastic cover, the contact area between the conductive terminal and the FFC cable changes depending on the pressure applied to the contact area, facilitating cable insertion while ensuring the connectivity between the conductive terminal and the cable.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is an exploded view of a recessed connector;
[0020] Figure 2 for Figure 1 Schematic diagram of the middle terminal;
[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the plastic shell;
[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the plastic top cover.
[0023] Among them, 1-plastic shell; 11-positioning groove; 12-contact groove; 13-rotating shaft groove; 14-fixing groove; 2-conductive terminal; 21-main body; 22-contact part; 23-upper fixing part; 24-lower fixing part; 25-external pin; 3-FFC cable; 4-plastic top cover; 41-avoidance hole; 42-clamping shaft; 43-limiting protrusion; 5-welding fixing piece. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Example
[0025] Please see Figures 1 to 4 A recessed connector for mounting on a PCB board and communicating with circuits on the PCB board includes a plastic housing 1 with a height greater than the thickness of the PCB board, multiple conductive terminals 2 inserted into the plastic housing, and an FFC cable 3 connected to the conductive terminals. The plastic housing has welding fixing pieces 5 extending outwards on both sides near its bottom. A perforated hole is provided on the PCB board, and the plastic housing is installed in the perforated hole. The FFC cable is located on one side of the PCB board and inserted into the plastic housing. The welding fixing pieces are welded and fixed to the side of the PCB board away from the FFC cable.
[0026] The FFC cable 3 is inserted into the plastic housing 1 from the front. The back of the plastic housing has multiple positioning grooves 11 in the vertical direction. The front of the plastic housing has multiple contact grooves 12 that are parallel to the FFC cable and matched with the positioning grooves. The positioning grooves have through holes that communicate with the contact grooves. The conductive terminal 2 includes a main body 21 installed in the positioning groove. The main body has a contact part 22 that passes through the through hole and is placed in the contact groove. The end of the FFC cable inserted into the plastic housing has a metal contact point, and the contact part is in close contact with the metal contact point.
[0027] The conductive terminal 2 also includes an upper fixing part 23 and a lower fixing part 24 located on the upper and lower sides of the contact part 22, respectively. The upper fixing part and the lower fixing part are integrally connected to the main body 21. The back of the plastic shell is provided with positioning holes that are adapted to the upper fixing part and the lower fixing part, respectively.
[0028] The main body 21 is also integrally connected with an external pin 25. The external pin is located at the bottom of the main body and is arranged in the opposite direction to the contact part and extends to the outside of the plastic shell. The end of the external pin away from the main body is welded and fixed to the PCB board, and the external pin and the welding fixing piece 5 are fixed on the same side of the PCB board.
[0029] The top of the plastic housing 1 is rotatably provided with a plastic cover 4. The top of the plastic housing is open and closed by the plastic cover. Rotary shaft grooves 13 are provided on both sides near the top of the plastic housing. The plastic cover is provided with a snap-fit shaft 42 that is adapted to the rotating shaft groove so as to facilitate the rotation of the plastic cover.
[0030] The plastic cover has a stepped cross-section, and the end near the front of the plastic shell is lower than the end away from the front of the plastic shell. The upper fixing part is Z-shaped, and the end of the upper fixing part near the front of the plastic shell is at the highest point. When the plastic cover is open, the stepped surface presses against the upper fixing part, thereby causing the conductive terminal to move down as a whole. When the plastic cover is closed, the conductive terminal is reset.
[0031] The snap-fit shaft 42 is located at one end of the plastic cover near the front of the plastic housing. The top surface of the shaft groove 13 is stepped, and the height of the shaft groove near the front of the plastic housing is lower than the height of the other end. Limiting protrusions 43 are provided on both sides of the plastic cover 4. The plane where the limiting protrusions are located is higher than the plane where the snap-fit shaft is located, and the position of the limiting protrusions is adapted to the height of the end of the shaft groove away from the front of the plastic housing.
[0032] The FFC cable insertion end is located above the contact portion 22. When the plastic cover 4 is opened, the contact portion moves down due to the pressure from the stepped surface and the upper fixing portion, creating enough space for the FFC cable 3 to be inserted. After the plastic cover is closed, the contact portion springs back and presses against the metal contact point of the FFC cable, ensuring the connection between the conductive terminal and the FFC cable. The plastic cover rotates within the rotating shaft groove 13 via the snap-fit shaft 42 during rotation. When closed, pressing the plastic cover causes the limiting protrusion 43 to engage with the step at the end of the rotating shaft groove, preventing the plastic cover from springing back open.
[0033] The plastic cover 4 has multiple clearance holes 41, the position and width of which are adapted to the upper fixing part 23 to prevent interference between the plastic cover and the upper fixing part when the plastic cover is closed.
[0034] The plastic shell 1 has L-shaped fixing grooves 14 on both sides of its bottom end, and the welding fixing piece 5 is snapped and fixed in the fixing groove.
[0035] The beneficial effects of this utility model are as follows: By projecting an insulating plastic shell across the cutout holes of the PCB board, a portion of the shell is recessed under the board and fixed to the PCB board by welding the outer pins of the conductive terminals and the welding fixing piece. This reduces the height of the connector body protruding from the PCB board, thereby reducing the space occupied by the electronic device on the board and effectively reducing the overall thickness of the electronic device. Moreover, the recessed structure is conducive to limiting the position of the plastic shell, effectively improving the stability of the structure. In addition, during the rotation of the plastic cover, the contact area between the conductive terminal contact part and the FFC cable changes with the pressure state of the contact part, which facilitates wire insertion while ensuring the connectivity between the conductive terminal and the cable.
[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.
Claims
1. A recessed connector for mounting on a PCB board and communicating with traces on the PCB board, characterized in that: The device includes a plastic housing (1) with a height greater than the thickness of the PCB board, multiple conductive terminals (2) inserted into the plastic housing, and an FFC cable (3) connected to the conductive terminals. The plastic housing is equipped with welding fixing pieces (5) extending outward from the plastic housing on both sides near the bottom end. The PCB board has a hollow hole, and the plastic housing is installed in the hollow hole. The FFC cable is located on one side of the PCB board and inserted into the plastic housing. The welding fixing pieces are welded and fixed to the side of the PCB board away from the FFC cable.
2. The recessed connector according to claim 1, characterized in that: The FFC cable (3) is inserted into the plastic housing (1) from the front side. The plastic housing has multiple positioning grooves (11) on the back side in the vertical direction. The plastic housing has multiple contact grooves (12) on the front side that are parallel to the FFC cable and matched with the positioning grooves. The positioning grooves have through holes that communicate with the contact grooves. The conductive terminal (2) includes a main body (21) installed in the positioning groove. The main body has a contact part (22) that passes through the through hole and is placed in the contact groove. The end of the FFC cable inserted into the plastic housing has a metal contact point. The contact part is in close contact with the metal contact point.
3. The recessed connector according to claim 2, characterized in that: The conductive terminal (2) also includes an upper fixing part (23) and a lower fixing part (24) located on the upper and lower sides of the contact part (22), respectively. The upper fixing part and the lower fixing part are integrally connected to the main body (21), and the plastic shell has positioning holes on the back that are adapted to the upper fixing part and the lower fixing part respectively.
4. The recessed connector according to claim 3, characterized in that: The main body (21) is also integrally connected with an external pin (25). The external pin is located at the bottom of the main body and is set in the opposite direction to the contact part and extends to the outside of the plastic shell. The end of the external pin away from the main body is welded and fixed to the PCB board, and the external pin and the welding fixing piece (5) are fixed on the same side of the PCB board.
5. The recessed connector according to claim 3, characterized in that: The top of the plastic housing (1) is rotatably provided with a plastic cover (4). The top of the plastic housing is open and closed by the plastic cover. Rotary shaft grooves (13) are provided on both sides of the plastic housing near the top. The plastic cover is provided with a snap-fit shaft (42) that matches the rotating shaft groove so that the plastic cover can rotate.
6. The recessed connector according to claim 5, characterized in that: The plastic cover (4) has a stepped cross section and the end near the front of the plastic shell is lower than the end away from the front of the plastic shell. The upper fixing part is Z-shaped and the end near the front of the plastic shell is at the highest point. When the plastic cover is open, the stepped surface presses the upper fixing part, thereby causing the conductive terminal to move down as a whole. After the plastic cover is closed, the conductive terminal is reset.
7. The recessed connector according to claim 6, characterized in that: The snap-fit shaft (42) is located at one end of the plastic cover near the front of the plastic housing. The top surface of the shaft groove (13) is stepped, and the height of the shaft groove near the front of the plastic housing is lower than the height of the other end. Limiting protrusions (43) are provided on both sides of the plastic cover (4). The plane where the limiting protrusions are located is higher than the plane where the snap-fit shaft is located, and the position of the limiting protrusions is matched with the height of the shaft groove away from the front of the plastic housing.
8. The recessed connector according to claim 6, characterized in that: The plastic cover (4) has multiple clearance holes (41) with the position and width of the clearance holes adapted to the upper fixing part (23) to prevent interference between the plastic cover and the upper fixing part when the plastic cover is closed.
9. The recessed connector according to claim 1, characterized in that: The plastic shell (1) has L-shaped fixing grooves (14) on both sides of the bottom end, and the welding fixing piece (5) is snapped and fixed in the fixing groove.