A plug-in electric connector and a liquid crystal display device

Abstract

The application relates to the technical field of electric connectors, and particularly provides a plug-in electric connector and a liquid crystal display device. The plug-in electric connector comprises a plastic body, the plastic body has an insertion end and a welding end which are oppositely arranged along the width direction, and a plurality of terminal fixing grooves are uniformly arranged in the plastic body along the length direction; the welding end is provided with an exposed protruding edge; the exposed protruding edge is provided with a limiting groove which is communicated with the plurality of terminal fixing grooves; the plurality of connecting terminals comprise a main body section, an exposed connecting section and a terminal welding leg which are integrally formed; the main body section is fixedly arranged in the terminal fixing groove; the exposed connecting section extends out of the limiting groove, and the terminal welding leg is fixedly arranged at the tail end of the exposed connecting section; then, the limiting groove for limiting the exposed connecting section of the connecting terminal is arranged at the welding end of the plastic body, so that the exposed connecting section of the terminal is effectively limited at the fixed position after plug-in, and the coplanarity of the terminal welding leg is improved.

Description

Technical Field

[0001] This application relates to the field of electrical connector technology, and more particularly to a plug-in electrical connector and a liquid crystal display device. Background Technology

[0002] A plug-in electrical connector is a common connecting element used in electronic devices to establish an electrical connection between two circuits. It is typically mounted on a printed circuit board (PCB), and electrical continuity is achieved between the plug-in board and the main circuit board via connection terminals by inserting another PCB into the connector.

[0003] In existing technologies, the connecting terminals are located inside the connector body, while the solder pads for soldering to the circuit board are typically exposed directly outside the connector body. To achieve a stable electrical connection, these solder pads have a certain length. However, in practical applications, such as during connector transportation or installation, the exposed and relatively long solder pads are easily subject to impacts or external forces, causing them to become misaligned. This disrupts the coplanarity of the solder pads and can easily lead to cold solder joints.

[0004] Therefore, existing technologies have defects and shortcomings, and need further improvement and development. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a plug-in electrical connector and a liquid crystal display device, which aims to solve the problem that the solder feet of the connection terminals of the plug-in electrical connector are easily bumped or interfered with by external forces, causing the solder feet to be skewed to the left and right, thereby destroying the coplanarity between multiple solder feet.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: A plug-in electrical connector for a liquid crystal display device, comprising: a plug-in electrical connector for a liquid crystal display device, comprising:

[0007] A plastic body has an insertion end and a welding end that are arranged opposite each other along the width direction. A plurality of terminal fixing grooves are evenly spaced along the length direction in the plastic body. The welding end is provided with an exposed protrusion. The exposed protrusion is provided with a limiting groove that communicates with the plurality of terminal fixing grooves. The insertion end is used to guide the insertion of the printed circuit board.

[0008] A plurality of connection terminals, wherein the plurality of connection terminals includes an integrally formed main body segment, an exposed connection segment, and terminal welding feet;

[0009] Wherein; the main body segment is fixedly disposed in the terminal fixing groove; the exposed connecting segment extends out from the limiting groove, and the terminal welding foot is fixedly disposed at the end of the exposed connecting segment; the limiting groove is used to limit the left and right side walls of the exposed connecting segment.

[0010] Optionally, the width of the terminal welding pin along the length direction is smaller than the width of the exposed connection section along the length direction;

[0011] The front end section of the exposed connecting section extends beyond the front wall surface of the exposed protrusion.

[0012] The plastic body and several connecting terminals are an insert molding structure.

[0013] Optionally, the lower surface of the exposed connecting section is flush with the lower surface of the exposed protrusion.

[0014] The two sides of the main body section are embedded in the terminal fixing groove.

[0015] Optionally, the end face of the plastic body facing away from the main body segment is provided with a plurality of first grooves; wherein, the first grooves are provided corresponding to the terminal fixing grooves; and the bottom of the plurality of first grooves is the bottom surface of the main body segment.

[0016] Optionally, the plastic body has a plurality of through holes away from the terminal welding feet, and the plurality of through holes are provided corresponding to the front end of the main body segment.

[0017] Optionally, the plastic body is provided with a plurality of second grooves away from the terminal welding feet, and each of the plurality of second grooves is provided with a partition, the partition abutting against the middle of the main body section.

[0018] Optionally, a plurality of the terminal fixing slots are provided with insertion limiting surfaces near the terminal welding feet, the insertion limiting surfaces being used to limit the insertion depth of the printed circuit board;

[0019] The welding end is provided with a snap-fit ​​protrusion, and the side of the snap-fit ​​protrusion near the main body section is provided with a shell assembly limiting surface.

[0020] Optionally, a left snap-fit ​​boss is provided on the left side of the plastic body, and a right snap-fit ​​boss is provided on the right side of the plastic body.

[0021] Optionally, the plug-in electrical connector further includes: a housing, wherein a left snap-fit ​​groove is provided on the left side of the housing, and a right snap-fit ​​groove is provided on the right side of the housing; the left snap-fit ​​groove is used to snap with the left snap-fit ​​boss; and the right snap-fit ​​groove is used to snap with the right snap-fit ​​boss.

[0022] Wherein, the edge of the housing near the terminal welding foot extends beyond the insertion limiting surface and is in contact with the outer shell assembly limiting surface.

[0023] The technical solution adopted by this application to solve the technical problem is as follows: a liquid crystal display device, which includes the plug-in electrical connector as described above.

[0024] Beneficial effects:

[0025] This application provides a plug-in electrical connector and a liquid crystal display device. The plug-in electrical connector has a limiting groove at the welding end of the plastic body for limiting the exposed connecting section of the connecting terminal. This effectively limits the exposed connecting section of the terminal to a fixed position after insertion, preventing the solder feet from being skewed or deviated due to collisions during installation or transportation. It also improves the coplanarity of the solder feet of the connecting terminal, thereby reducing the risk of welding defects such as cold solder joints and missing solder joints, and improving welding stability and electrical connection reliability. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the plug-in electrical connector provided in this application;

[0027] Figure 2 This is a three-dimensional structural diagram of the plastic body of the plug-in electrical connector provided in this application;

[0028] Figure 3 This is a three-dimensional structural diagram of the plastic body and connecting terminals of the plug-in electrical connector provided in this application;

[0029] Figure 4 This is a three-dimensional structural diagram of the plastic body and connecting terminals of the plug-in electrical connector provided in this application from another perspective.

[0030] Figure 5 This is a three-dimensional exploded view of the plug-in electrical connector provided in this application;

[0031] Figure 6 This is a top view of the plug-in electrical connector provided in this application;

[0032] Figure 7 It is provided in this application Figure 6 A sectional view along the I-I direction.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Plug-in electrical connector; 11. Plastic body; 111. Insertion end; 112. Soldering end; 113. Terminal fixing groove; 114. Exposed protrusion; 115. Limiting groove; 116. First groove; 117. Through hole; 118. Second groove; 119. Insertion limiting surface; 1110. Snap-on protrusion; 1111. Housing assembly limiting surface; 1112. Left snap-on boss; 1113. Right snap-on boss; 12. Connecting terminal; 121. Main body section; 122. Exposed connecting section; 123. Terminal soldering foot; 13. Partition; 14. Housing; 141. Left snap-on groove; 142. Right snap-on groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0036] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] Please refer to the following: Figures 1 to 7The first embodiment of this application provides a plug-in electrical connector 10, which includes a plastic body 11, a plurality of connecting terminals 12, and a housing 14. Specifically, the plastic body 11 and the plurality of connecting terminals 12 are manufactured using an insert molding process, that is, the plurality of connecting terminals 12 and the plastic body 11 are integrally manufactured using an injection molding process. The plastic body 11 is provided with an insertion end 111 and a soldering end 112 along the width direction, and a plurality of terminal fixing grooves 113 are evenly spaced along the length direction. The soldering end 112 is provided with an exposed protrusion 114, and a limiting groove 115 communicating with the terminal fixing groove 113 is provided on the exposed protrusion 114. Several connecting terminals 12 are integrally formed, comprising a main body section 121, an exposed connecting section 122, and a terminal welding foot 123. The main body section 121 is fixedly disposed in the terminal fixing groove 113, the exposed connecting section 122 extends out of the limiting groove 115, and the terminal welding foot 123 is fixedly disposed at the end of the exposed connecting section 122. The plastic body 11 is also provided with several first grooves 116, through holes 117, second grooves 118, insertion limiting surfaces 119, snap-fit ​​protrusions 1110, housing assembly limiting surfaces 1111, left snap-fit ​​protrusions 1112, and right snap-fit ​​protrusions 1113. The left and right sides of the housing 14 are respectively provided with left snap-fit ​​grooves 141 and right snap-fit ​​grooves 142 for engaging with the corresponding left snap-fit ​​protrusions 1112 and right snap-fit ​​protrusions 1113.

[0039] During operation, the printed circuit board is guided into the plastic body 11 through the insertion end 111 and finally inserted into the insertion limiting surface 119 to achieve electrical connection with the connecting terminal 12. The main body segment 121 of each connecting terminal 12 is stably embedded in the terminal fixing groove 113, and the two sides are constrained by the terminal fixing groove 113, thereby improving the positioning accuracy and stability of the connecting terminal 12. The exposed connecting segment 122 extends from the limiting groove 115, and the left and right sides of the exposed connecting segment 122 are constrained by the limiting groove 115. The limiting groove 115 is used to suppress the left and right swing of the exposed connecting segment 122 before and after welding, thereby ensuring that the terminal welding feet 123 maintain good coplanarity.

[0040] The terminal welding foot 123 is fixedly disposed at the end of the exposed connecting section 122. The width of the terminal welding foot 123 is smaller than the width of the exposed connecting section 122, and the front end section of the exposed connecting section 122 extends beyond the front wall surface of the exposed protrusion 114, with its lower surface flush with the lower surface of the exposed protrusion 114. This creates a stable constraint relationship between the exposed connecting section 122 and the plastic body 11, effectively improving the deformation resistance of the exposed connecting section 122 and further enhancing the anti-interference ability of the welding foot during transportation or assembly, preventing it from tilting to the left or right.

[0041] The plastic body 11 has several first grooves 116 at one end opposite to the main body section 121. The bottom of the first groove 116 is the bottom surface of the main body section 121, which enhances the bonding strength between the connecting terminal 12 and the plastic body 11 and improves the overall structural stability. The through hole 117 exposes part of the front end of the terminal, which, together with the printed circuit board, achieves elastic contact and conduction. A partition 13 is provided in the second groove 118. The partition 13 abuts against the middle of the connecting terminal 12 to further limit and support the connecting terminal 12 and suppress the risk of bending deformation in the middle.

[0042] The insertion limiting surface 119 is used to control the insertion depth of the printed circuit board to ensure accurate electrical connection position. The snap-fit ​​protrusion 1110 is provided on one side of the main body section 121, and can achieve precise positioning of the housing 14 in conjunction with the housing assembly limiting surface 1111. The left snap-fit ​​groove 141 and the right snap-fit ​​groove 142 of the housing 14 engage with the left snap-fit ​​boss 1112 and the right snap-fit ​​boss 1113 respectively. The edge of the housing 14 extends beyond the insertion limiting surface 119 and fits against the housing assembly limiting surface 1111, which effectively improves the connection stability between the housing 14 and the plastic body 11 and prevents displacement, loosening or falling off during use.

[0043] The plug-in electrical connector 10 constrains the exposed connection section 122 by setting a limiting groove 115, and achieves position protection and overall structural reinforcement of the welding pins of the connection terminal 12 through the exposed protrusion 114, the housing assembly limiting surface 1111 and the snap-fit ​​between the housing 14 and the plastic body 11. This effectively avoids the welding pins from tilting left or right during transportation or installation, maintains good coplanarity, ensures welding quality, and improves the reliability of electrical connection.

[0044] Please refer to the following: Figures 1 to 4In some embodiments, the plug-in electrical connector 10 includes a plastic body 11 and a plurality of connecting terminals 12; the plastic body 11 has an insertion end 111 and a soldering end 112 disposed opposite each other along the width direction, and a plurality of terminal fixing grooves 113 are evenly spaced along the length direction in the plastic body 11; the soldering end 112 is provided with an exposed flange 114; the exposed flange 114 is provided with a limiting groove 115 communicating with the plurality of terminal fixing grooves 113; the insertion end 111 is used for... The circuit board is inserted into the guide plate; the plurality of connection terminals 12 include an integrally formed main body section 121, an exposed connection section 122, and a terminal welding foot 123; wherein; the main body section 121 is fixedly disposed in the terminal fixing groove 113; the exposed connection section 122 extends from the limiting groove 115, and the terminal welding foot 123 is fixedly disposed at the end of the exposed connection section 122; the limiting groove 115 is used to limit the left and right sides of the exposed connection section 122. Furthermore, by providing a limiting groove 115 for limiting the exposed connection section 122 of the connection terminal 12 at the welding end 112 of the plastic body 11, the exposed connection section 122 of the terminal is effectively limited to a fixed position after insertion, preventing the welding foot from being skewed or deviated due to collision during installation or transportation, improving the coplanarity of the welding feet of the connection terminal 12, thereby reducing the risk of welding defects such as incomplete soldering and missing soldering, and improving welding stability and electrical connection reliability.

[0045] Please refer to the following: Figure 3 In some embodiments, the width of the terminal welding foot 123 along its length is smaller than the width of the exposed connecting section 122 along its length; the front end section of the exposed connecting section 122 extends beyond the front wall surface of the exposed protrusion 114. Furthermore, by limiting the insertion path and installation space of the exposed connecting section 122 of the connecting terminal 12, the positioning of the terminal within the plastic body 11 is made more stable, avoiding lateral swaying or tilting; wherein, the plastic body 11 and the plurality of connecting terminals 12 form an insert molding structure; thus, compared with existing structures, the number of assembled parts can be reduced, further reducing manufacturing and material costs.

[0046] Please refer to the following: Figure 3 In some embodiments, the lower surface of the exposed connecting section 122 is flush with the lower surface of the exposed protrusion 114; the two sides of the main body section 121 are embedded in the terminal fixing groove 113. Furthermore, the left and right side walls are provided by the limiting groove 115, which fits snugly against the exposed connecting section 122 of the connecting terminal 12, enabling the limiting groove 115 to provide a continuous and stable lateral clamping effect on the connecting section, increasing the strength of the terminal welding foot 123; avoiding left-right skewing or up-down deformation caused by the accumulation of tolerances between terminals or external forces, effectively ensuring the flatness, parallelism, and spacing consistency of the terminal arrangement, providing a structural basis for automatic welding.

[0047] Please refer to the following: Figure 3 In some embodiments, the end face of the plastic body 11 facing away from the main body segment 121 is provided with a plurality of first grooves 116; wherein, the first grooves 116 are correspondingly provided with the terminal fixing grooves 113, specifically, two first grooves 116 can be provided on the left and right sides of one terminal fixing groove 113; the first grooves 116 and the terminal fixing grooves 113 are vertically corresponding; the bottom of the plurality of first grooves 116 is the bottom surface of the main body segment 121. Furthermore, by embedding the main body segment 121 of the connecting terminal 12 into the terminal fixing groove 113, longitudinal and lateral positioning and overall fixation of the terminal can be achieved, making it less prone to axial slippage or loosening when subjected to insertion / extraction forces or transportation vibrations. This is beneficial to the long-term stability and reliability of the overall connector structure, and can also reduce the number of assembled parts, thus reducing manufacturing and material costs.

[0048] Please refer to the following: Figure 3 In some embodiments, the plastic body 11 has a plurality of through holes 117 located away from the terminal soldering feet 123, and the plurality of through holes 117 are correspondingly arranged with respect to the front end of the main body segment 121. Furthermore, by providing through holes 117 at the bottom of the plastic body 11, deformation space is provided for the plurality of connecting terminals 12 when the printed circuit board is inserted, protecting the connecting terminals 12 from damage and further extending the service life of the plurality of connecting terminals 12.

[0049] Please refer to the following: Figure 4 In some embodiments, the plastic body 11 has a plurality of second grooves 118 located away from and near the terminal welding feet 123. Each of the second grooves 118 has a partition 13, which abuts against the middle of the main body section 121. This enhances the robustness and stability of the assembly between the plastic body 11 and the plurality of connecting terminals 12, as well as the overall strength.

[0050] Please refer to the following: Figure 3 In some embodiments, several terminal fixing slots 113 are provided with insertion limiting surfaces 119 near the terminal welding feet 123. The insertion limiting surfaces 119 are used to limit the insertion depth of the printed circuit board. The welding end 112 is provided with a snap-fit ​​protrusion 1110, and the snap-fit ​​protrusion 1110 is provided with a housing assembly limiting surface 1111 on the side near the main body section 121. Thus, the insertion limiting surfaces 119 allow the board to be physically limited in advance during insertion, preventing it from being inserted too deeply, protecting the connecting terminals 12 from damage, and avoiding terminal deformation or elasticity attenuation caused by excessive contact pressure.

[0051] Please refer to the following: Figure 1 , Figures 5 to 7In some embodiments, the plug-in electrical connector 10 further includes a housing 14, the left side of which is provided with a left snap-fit ​​groove 141, and the right side of which is provided with a right snap-fit ​​groove 142; the left side of the plastic body 11 is provided with a left snap-fit ​​boss 1112, and the right side of the plastic body 11 is provided with a right snap-fit ​​boss 1113. The left snap-fit ​​groove 141 is used to snap with the left snap-fit ​​boss 1112; the right snap-fit ​​groove 142 is used to snap with the right snap-fit ​​boss 1113; wherein, the edge of the housing 14 near the terminal welding pin 123 extends beyond the insertion limiting surface 119 and is in contact with the outer shell assembly limiting surface 1111. Furthermore, by setting a snap-fit ​​groove on the housing 14 and a snap-fit ​​protrusion on the plastic body 11, the two can be quickly and reliably assembled through a snap-fit ​​structure, avoiding the use of additional structures such as screws and glue, simplifying the assembly process and improving assembly efficiency. Moreover, the snap-fit ​​structure has strong anti-detachment ability, which is conducive to improving the overall structural stability and long-term reliability.

[0052] The second embodiment of this application also provides a liquid crystal display device, which includes the plug-in electrical connector as described above. This improves the coplanarity of the solder pins of the connection terminals, thereby reducing the risk of soldering defects such as cold solder joints and missing solder joints, ensuring stable electrical connection during long-term use, and reducing the failure rate of the liquid crystal display device.

[0053] In summary, this application provides a plug-in electrical connector and a liquid crystal display device. The plug-in electrical connector includes: a plastic body having an insertion end and a soldering end disposed opposite each other along the width direction; a plurality of terminal fixing grooves evenly spaced along the length direction in the plastic body; an exposed flange on the soldering end; a limiting groove communicating with the plurality of terminal fixing grooves on the exposed flange; the insertion end for guiding the insertion of a printed circuit board; and a plurality of connecting terminals, each of the connecting terminals including an integrally formed main body segment, an exposed connecting segment, and terminal soldering feet; wherein the main body segment is fixedly provided with... The terminal is placed in the terminal fixing groove; the exposed connecting section extends from the limiting groove, and the terminal welding foot is fixedly set at the end of the exposed connecting section; the limiting groove is used to limit the left and right side walls of the exposed connecting section; thus, by providing a limiting groove for limiting the exposed connecting section of the connecting terminal at the welding end of the plastic body, the exposed connecting section of the terminal is effectively limited to a fixed position after insertion, preventing the welding foot from being skewed or deviated due to collision during installation or transportation, improving the coplanarity of the welding foot of the connecting terminal, thereby reducing the risk of welding defects such as incomplete welding and missing welding, and improving welding stability and electrical connection reliability.

[0054] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A plug-in electrical connector for use in liquid crystal display devices, characterized in that, The plug-in electrical connector includes: A plastic body has an insertion end and a welding end that are arranged opposite each other along the width direction. A plurality of terminal fixing grooves are evenly spaced along the length direction in the plastic body. The welding end is provided with an exposed protrusion. A limiting groove connected to the terminal fixing groove is provided on the exposed protrusion. The insertion end is used to guide the insertion of the printed circuit board. A plurality of connection terminals, wherein the plurality of connection terminals includes an integrally formed main body segment, an exposed connection segment, and terminal welding feet; Wherein; the main body segment is fixedly disposed in the terminal fixing groove; the exposed connecting segment extends out from the limiting groove, and the terminal welding foot is fixedly disposed at the end of the exposed connecting segment; the limiting groove is used to limit the left and right side walls of the exposed connecting segment.

2. The plug-in electrical connector according to claim 1, characterized in that, The width of the terminal welding foot along the length direction is less than the width of the exposed connecting section along the length direction; the front end section of the exposed connecting section extends beyond the front wall surface of the exposed protrusion. The plastic body and several connecting terminals are an insert molding structure.

3. The plug-in electrical connector according to claim 2, characterized in that, The lower surface of the exposed connecting section is flush with the lower surface of the exposed protrusion. The two sides of the main body section are embedded in the terminal fixing groove.

4. The plug-in electrical connector according to claim 1, characterized in that, The end face of the plastic body facing away from the main body segment is provided with a plurality of first grooves; wherein, the first grooves are provided corresponding to the terminal fixing grooves; the bottom of the plurality of first grooves is the bottom surface of the main body segment.

5. The plug-in electrical connector according to claim 4, characterized in that, The plastic body has several through holes located away from the terminal welding feet, and these through holes are corresponding to the front end of the main body segment.

6. The plug-in electrical connector according to claim 5, characterized in that, The plastic body has several second grooves located away from the terminal welding feet, and each of the second grooves has a partition plate, which abuts against the middle of the main body section.

7. The plug-in electrical connector according to claim 5, characterized in that, A plurality of the terminal fixing slots are provided with insertion limiting surfaces near the terminal welding feet, the insertion limiting surfaces being used to limit the insertion depth of the printed circuit board; The welding end is provided with a snap-fit ​​protrusion, and the side of the snap-fit ​​protrusion near the main body section is provided with a shell assembly limiting surface.

8. The plug-in electrical connector according to claim 7, characterized in that, The left side of the plastic body is provided with a left snap-fit ​​boss, and the right side of the plastic body is provided with a right snap-fit ​​boss.

9. The plug-in electrical connector according to claim 8, characterized in that, The plug-in electrical connector further includes: a housing, wherein a left snap-fit ​​groove is provided on the left side of the housing, and a right snap-fit ​​groove is provided on the right side of the housing; the left snap-fit ​​groove is used to snap with the left snap-fit ​​boss; and the right snap-fit ​​groove is used to snap with the right snap-fit ​​boss. Wherein, the edge of the housing near the terminal welding foot extends beyond the insertion limiting surface and is in contact with the outer shell assembly limiting surface.

10. A liquid crystal display device, characterized in that, Including the plug-in electrical connector as described in any one of claims 1-9.

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