Plugboard type electric connector and liquid crystal display device

Abstract

The utility model relates to the technical field of electric connectors, and particularly provides a plugboard type electric connector and a liquid crystal display device, the plugboard type electric connector comprises a plurality of connecting terminals, and the plurality of connecting terminals comprise main body parts and welding foot parts; the base is provided with an insertion end and a blocking end which are oppositely arranged; the plurality of main body parts are arranged in the insertion end, the welding foot parts are arranged on the blocking end, and the welding foot parts are used for being welded with a plurality of welding feet of the printed circuit board; and the partition plate is arranged at the blocking end and is used for separating the welding foot part from an aluminum substrate of the printed circuit board. The separating plate is arranged at the separating end of the plugboard type electric connector to physically separate the welding foot part of the connecting terminal from the aluminum substrate, so that the liquid crystal display fault caused by short circuit due to direct contact between the welding foot part and the aluminum substrate caused by deformation or external force during long-term use of the connecting terminal is avoided, and the service life of the liquid crystal display is prolonged. Therefore, the reliability of the plugboard type electric connector is improved, and the stability of electric transmission is ensured at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connectors, and in particular to a plug-in type electrical connector and a liquid crystal display device. Background Art

[0002] The plug-in type electrical connector is an electronic component used to connect two circuits and is installed on a printed circuit board. The PCB plug-in board is inserted into the plug-in type electrical connector, and the electrical connection between the PCB plug-in board and the printed circuit board is achieved through the connecting terminals.

[0003] In the application scenario where the plug-in type electrical connector is assembled to a printed circuit board, a number of solder pins are provided on the printed circuit board. In order to improve the heat dissipation efficiency, an aluminum substrate insulated from the solder pins is also provided around the solder pins. The connecting terminals are electrically connected to the solder pins, thereby installing the plug-in type electrical connector on the electrical connector. However, since the strength of the connecting terminals is relatively low, they are prone to deformation when subjected to force, which will cause unnecessary physical contact between the connecting terminals and the aluminum substrate, thereby causing a short circuit problem and affecting the stable transmission of the signal.

[0004] Therefore, the prior art has defects and shortcomings and needs further improvement and development. Utility Model Content

[0005] In view of the deficiencies of the prior art, the present application aims to provide a plug-in type electrical connector and a liquid crystal display device, aiming to solve the problem in the prior art that the connecting terminals of the plug-in type electrical connector are easily in contact with the aluminum substrate and cause a short circuit.

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

[0007] A plurality of connection terminals, wherein the plurality of connection terminals include a main body portion and a solder foot portion;

[0008] A base, the base having an insertion end and a blocking end arranged opposite to each other; a plurality of the main body parts are arranged in the insertion end, the solder foot parts are arranged on the blocking end, and the solder foot parts are used for soldering with a plurality of solder feet of a printed circuit board;

[0009] A partition is arranged at the blocking end, and is used to separate the solder foot portion from the aluminum substrate of the printed circuit board.

[0010] Optionally, the blocking end is provided with a left card platform and a right card platform, and the left card platform and the right card platform are both provided with a square card slot, and the horizontal cross-section of the square card slot is L-shaped.

[0011] Optionally, a left fixing block and a right fixing block are provided on both sides of the partition, the left fixing block is inserted into the left card platform, and the right fixing block is inserted into the right card platform.

[0012] Optionally, the plug-in type electrical connector further comprises an iron shell, the iron shell comprises an iron shell body, the iron shell body is used to cover the base; an iron shell riveting opening is provided at the bottom of the iron shell body;

[0013] One end of the iron shell body is provided with a guiding bevel, and the other end of the iron shell body is provided with a plurality of iron shell clamping feet and a plurality of iron shell clamping grooves, wherein the plurality of iron shell clamping feet are used to prevent the iron shell body from warping up; the horizontal heights of the plurality of iron shell clamping grooves are lower than the horizontal heights of the plurality of iron shell clamping feet; the side wall of the iron shell is provided with two soldering feet, and the two soldering feet are used to be welded and fixed with the soldering feet of the printed circuit board; and the two side surfaces of the iron shell are provided with fixing clamping feet.

[0014] Optionally, a base clamping platform adapted to the shape of the iron shell clamping slot is provided on the bottom surface of the base, and the base clamping platform is clamped into the iron shell clamping slot, and the base clamping platform is used to prevent the riveted opening of the iron shell from cracking.

[0015] Optionally, both the left side and the right side of the base are provided with fixing grooves matched with the shape of the fixing pins, and the fixing pins are inserted into the fixing grooves.

[0016] Optionally, a plurality of partition slots are provided on one side of the partition facing the blocking end, the plurality of partition slots are arranged at intervals, and the plurality of partition slots are used to cooperate with the iron shell feet to prevent the partition from moving up and down in the base.

[0017] Optionally, the blocking end is provided with a plurality of iron shell foot slots corresponding to the plurality of iron shell foots, the iron shell foot slots are used for the iron shell foot to extend therein and guide the iron shell foot to be inserted into the partition plate slot;

[0018] Among them, when the iron shell is assembled to the outside of the base, the fixed pin is inserted into the fixed groove, the iron shell pin extends from the iron shell pin slot, and is inserted into the partition slot to prevent the partition from moving up and down; the base card is inserted into the iron shell slot.

[0019] Optionally, the main body is provided with an extension fixing plate, and the blocking end is also provided with a plurality of terminal accommodating grooves, and the plurality of terminal accommodating grooves are used to accommodate a plurality of connecting terminals. The bottom of the side groove walls of the plurality of terminal accommodating grooves are provided with a plurality of terminal fixing accommodating grooves, and the plurality of terminal fixing accommodating grooves are all cooperated with the extension fixing plate to provide fixing points for a plurality of connecting terminals; the insertion end is also provided with a guide ramp, and the guide ramp is used to provide a guide path for the insertion of the PCB connector board.

[0020] The technical solution adopted by the present application to solve the technical problem is as follows: a liquid crystal display device, which includes the plug-in type electrical connector as described above.

[0021] Beneficial effects:

[0022] The present application provides a plug-in type electrical connector and a liquid crystal display device. The plug-in type electrical connector physically separates the solder pins of the connecting terminals from the aluminum substrate by providing a partition at the blocking end of the plug-in type electrical connector, thereby avoiding direct contact between the solder pins and the aluminum substrate due to deformation or external force during long-term use of the connecting terminals, thereby preventing a short circuit in the circuit and causing liquid crystal display failures. The safety of the plug-in type electrical connector is improved while ensuring the stability of electrical transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the plug-in type electrical connector provided in this application;

[0024] Figure 2 It is a three-dimensional exploded structural schematic diagram of a partition and a base of a plug-in type electrical connector provided in the present application;

[0025] Figure 3 It is a three-dimensional exploded structural schematic diagram of the plug-in type electrical connector provided in the present application;

[0026] Figure 4 It is a three-dimensional exploded structural schematic diagram of another perspective of the plug-in type electrical connector provided in the present application;

[0027] Figure 5 is a bottom view of the plug-in type electrical connector provided in the present application;

[0028] Figure 6 This application provides Figure 5 Cross-sectional view along direction Ⅰ-Ⅰ;

[0029] Figure 7 This application provides Figure 2 An enlarged schematic diagram of point A in FIG.

[0030] Description of reference numerals:

[0031] 10. Plug-in type electrical connector; 11. Connecting terminal; 111. Main body; 112. Solder leg; 113. Extension fixing plate; 12. Base; 121. Insertion end; 1211. Guide ramp; 122. Blocking end; 1221. Left card platform; 1222. Right card platform; 1223. Square card slot; 1224. Terminal receiving slot; 1225. Terminal fixing receiving slot; 123. Base card platform; 124. Fixing slot ; 125, iron shell foot slot; 20, printed circuit board; 21, aluminum substrate; 13, partition; 131, left fixed block; 132, right fixed block; 133, partition slot; 14, iron shell; 141, iron shell riveting mouth; 142, guide oblique mouth; 143, iron shell foot; 144, iron shell slot; 145, solder foot; 146, fixed foot; 147, iron shell body; 148, left side; 149, right side. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present application and are not used to limit the present application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Please refer to Figures 1 to 6In the first embodiment of the present application, a plug-in type electrical connector 10 is provided, which is used for a liquid crystal display device; the plug-in type electrical connector 10 is composed of a base 12, an iron shell 14, a partition 13 and a plurality of connection terminals 11, and the components cooperate with each other to achieve stable electrical transmission and mechanical protection. The base 12 is a supporting structure of the plug-in type electrical connector 10, and the base 12 is provided with a plurality of terminal accommodating grooves 1224 and a plurality of terminal fixing accommodating grooves 1225, which are used to position and fix the connection terminals 11. The main body 111 of the connection terminal 11 is embedded in the base 12, and the solder foot part 112 extends to the blocking end 122, and realizes electrical transmission by contacting with the solder foot on the printed circuit board 20; the solder foot part 112 is the part where the solder foot is connected to the main body 111; an aluminum substrate 21 insulated from the solder foot is provided around the solder foot, and the aluminum substrate 21 plays the role of heat dissipation for the circuit board. At the same time, a guide bevel 142 is provided at the insertion end 121 of the base 12 to ensure that the PCB plug board can be inserted accurately, thereby improving the convenience of assembly. The blocking end 122 is equipped with a partition 13, which is embedded in the left clamping platform 1221 of the base 12 through the left fixing block 131, and the right fixing block 132 is embedded in the right clamping platform 1222 of the base 12, so as to limit the partition 13 in the front-back direction of the base 12. The partition 13 and the welding foot 112 of the connecting terminal 11 are located at the blocking end 122. The function of the partition 13 is to isolate the welding foot 112 from the aluminum substrate 21, so as to avoid the welding foot 112 of multiple connecting terminals 11 from deforming or being stressed, and contacting with the aluminum substrate 21 at the same time, thereby generating a short circuit, thereby improving the safety of the plug-in type electrical connector 10 and the reliability of electrical transmission. The iron shell 14 is covered on the outside of the base 12. Through the cooperation between the fixed pin 146 and the fixed groove 124, the iron shell pin 143 and the iron shell pin slot 125, and the base clamp 123 and the iron shell slot 144, the iron shell 14 is fixed to the outside of the base 12, and the partition 13 is limited in the up and down directions. The solder pin 145 at the bottom of the iron shell 14 is fixed to the solder pin of the printed circuit board 20 by welding, which not only provides additional mechanical protection, but also enhances the anti-vibration ability of the plug-in type electrical connector 10. The cooperation between the iron shell pin 143 and the partition slot 133 further prevents the partition 13 from moving up and down, ensuring that it always remains stable. During operation, the connecting terminal 11 is connected to the solder pin of the printed circuit board 20, and electrical transmission is achieved through stable contacts. By providing a partition 13 at the blocking end 122 of the plug-in electrical connector 10, the solder foot 112 of the connecting terminal 11 is physically separated from the aluminum substrate 21, thereby avoiding direct contact between the solder foot 112 and the aluminum substrate 21 due to deformation or external force during long-term use of the connecting terminal 11, thereby preventing a short circuit in the circuit and causing a liquid crystal display failure.

[0036] Please refer to Figure 1 and Figure 2In some embodiments, the plug-in type electrical connector 10 includes a base 12, a base 12, a partition 13 and a plurality of connection terminals 11, wherein the plurality of connection terminals 11 include a main body 111 and a solder leg 112; the base 12 has an insertion end 121 and a blocking end 122 arranged opposite to each other; the plurality of main bodies 111 are arranged in the insertion end 121, the solder leg 112 is arranged on the blocking end 122, and the solder leg 112 is used to be soldered with a plurality of solder legs of a printed circuit board 20; the partition 13 is arranged at the blocking end 122, and the partition 13 is used to separate the solder leg 112 from the aluminum substrate 21 of the printed circuit board 20. Thus, the solder leg 112 of the connection terminal 11 is physically separated from the aluminum substrate 21, thereby avoiding direct contact between the solder leg 112 and the aluminum substrate 21 due to deformation or external force during long-term use of the connection terminal 11, resulting in a short circuit of the circuit and causing a liquid crystal display failure.

[0037] Please refer to Figure 3 and Figure 4 In some embodiments, the blocking end 122 is provided with a left card platform 1221 and a right card platform 1222, and the left card platform 1221 and the right card platform 1222 are both provided with a square card slot 1223, and the horizontal cross-section of the square card slot 1223 is L-shaped. This improves the deformation resistance and connection strength of the square card slot 1223, enhances the fixing effect of the partition 13 in the plug-in type electrical connector 10, and avoids loosening due to external force or long-term use. At the same time, the L-shaped structure of the card slot provides clear positioning for the assembly of the partition 13, reduces possible deviations during the assembly process, and improves the assembly efficiency and stability of the partition 13 and the base 12.

[0038] Please refer to Figure 4 In some embodiments, a left fixing block 131 and a right fixing block 132 are provided on both sides of the partition 13, and the shape of the left fixing block 131 is adapted to the shape of the left card platform 1221, and the shape of the right fixing block 132 is adapted to the shape of the right card platform 1222; wherein, the left fixing block 131 is inserted into the left card platform 1221, and the right fixing block 132 is inserted into the right card platform 1222. Thus, the assembly stability of the partition 13 is improved, and the partition 13 is prevented from loosening during use, thereby further ensuring the isolation effect of the welding foot portion 112 and the aluminum substrate 21, and improving the overall operation reliability of the plug-in type electrical connector 10.

[0039] Please refer to Figure 3 and Figure 4In some embodiments, the plug-in type electrical connector 10 further includes an iron shell 14, wherein the iron shell 14 includes an iron shell body 147, wherein the iron shell body 147 is used to cover the base 12, thereby providing additional mechanical protection for the base 12 and enhancing the overall impact resistance; an iron shell riveting opening 141 is provided at the bottom of the iron shell body 147, thereby enhancing the fixing effect; a guide bevel 142 is provided at one end of the iron shell body 147, thereby providing a guide path for the insertion of the PCB plug-in board, simplifying the assembly steps and reducing the risk of damage to the connection terminal 11 caused by improper insertion; a plurality of iron shell feet 143 and a plurality of iron shell slots 144 are provided at the other end of the iron shell body 147, if All of the iron shell clamping feet 143 are used to prevent the iron shell body 147 from warping up; the horizontal heights of some of the iron shell slots 144 are lower than the horizontal heights of some of the iron shell clamping feet 143, thereby preventing the iron shell 14 from warping up due to external force, further improving the mechanical stability of the plug-in type electrical connector 10; the side wall of the iron shell 14 is provided with two soldering feet 145, and the two soldering feet 145 are both used to weld and fix with the soldering feet of the printed circuit board 20, thereby making the assembly of the entire plug-in type electrical connector 10 more secure and extending the service life of the plug-in type electrical connector 10; the two side surfaces of the iron shell 14 are provided with fixing clamping feet 146, thereby providing installation points for the installation of the iron shell 14.

[0040] Please refer to Figure 3 and Figure 5 In some embodiments, a base clamping platform 123 matching the shape of the iron shell clamping slot 144 is provided on the bottom surface of the base 12, and the base clamping platform 123 is clamped into the iron shell clamping slot 144, and the base clamping platform 123 is used to prevent the iron shell riveting opening 141 from cracking. The connection strength between the iron shell 14 and the base 12 is further enhanced, and the problem of the iron shell riveting opening 141 cracking due to the pulling of the two sides of the iron shell 14 during long-term use is avoided, thereby improving the durability and stability of the plug-in type electrical connector 10.

[0041] Please refer to Figure 4 In some embodiments, the left side 148 and the right side 149 of the base 12 are both provided with a fixing groove 124 that matches the shape of the fixing foot 146, and the fixing foot 146 is inserted into the fixing groove 124. This effectively prevents the iron shell 14 from loosening or shifting under the action of external force. The connection firmness between the base 12 and the iron shell 14 is further enhanced, providing a guarantee for the structural stability of the entire plug-in type electrical connector 10.

[0042] Please refer to Figure 4In some embodiments, the partition 13 is provided with a plurality of partition slots 133 on one side facing the blocking end 122, and the plurality of partition slots 133 are arranged at intervals, and the plurality of partition slots 133 are used to cooperate with the iron shell foot 143 to prevent the partition 13 from moving up and down in the base 12. Thus, a preset guide position is provided for the assembly of the iron shell foot 143, which further simplifies the assembly process of the plug-in type electrical connector 10, improves the assembly efficiency, and effectively prevents the iron shell 14 from warping up after being inserted into the PCB plug-in board; at the same time, the partition 13 is limited in the up and down directions, and the structural stability of the plug-in type electrical connector 10 is improved.

[0043] Please refer to Figure 2 and Figure 6 In some embodiments, the blocking end 122 is provided with a plurality of iron shell foot slots 125 corresponding to the plurality of iron shell foots 143, and the iron shell foot slots 125 are used for the iron shell foot 143 to extend into and guide the iron shell foot 143 to be inserted into the partition slot 133; wherein, when the iron shell 14 is assembled to the outside of the base 12, the fixed foot 146 is inserted into the fixed slot 124, and the iron shell foot 143 extends out from the iron shell foot slot 125 and is inserted into the partition slot 133 to prevent the partition 13 from moving up and down; the base card platform 123 is inserted into the iron shell slot 144. This forms a double fixed structure between the iron shell 14 and the partition 13, which not only prevents the partition 13 from moving in the up and down directions, but also further consolidates the assembly stability between the iron shell 14 and the base 12, improves the stability of the plug-in type electrical connector 10 in complex use environments, and ensures the long-term operation reliability of the plug-in type electrical connector 10.

[0044] Please refer to Figures 3 to 7 In some embodiments, the main body 111 is provided with an extended fixing plate 113, and the blocking end 122 is also provided with a plurality of terminal accommodating grooves 1224, and the plurality of terminal accommodating grooves 1224 are used to accommodate the plurality of connecting terminals 11, and the bottoms of the side groove walls of the plurality of terminal accommodating grooves 1224 are provided with a plurality of terminal fixing accommodating grooves 1225, and the plurality of terminal fixing accommodating grooves 1225 are all cooperated with the extended fixing plate 113 to provide fixing points for the plurality of connecting terminals 11, thereby providing fixing points for the assembly of the connecting terminals 11, thereby preventing the connecting terminals 11 from being scraped or deformed when the PCB connector is obliquely inserted; the insertion end 121 is also provided with a guide ramp 1211, and the guide ramp 1211 is used to provide a guide path for the insertion of the PCB connector.

[0045] The second embodiment of the present application also provides a liquid crystal display device, which includes the plug-in type electrical connector as described above, thereby improving the safety of the electrical connection part of the liquid crystal display device and the electrical transmission stability, and providing a guarantee for the long-term stable operation of the liquid crystal display device.

[0046] In summary, the present application provides a plug-in type electrical connector and a liquid crystal display device, the plug-in type electrical connector comprising: a plurality of connecting terminals, a plurality of the connecting terminals comprising a main body and a welding foot portion; a base, the base having an insertion end and a blocking end arranged oppositely; a plurality of the main bodies are arranged in the insertion end, the welding foot portions are arranged on the blocking end, the welding foot portions are used to be welded with a plurality of welding feet of a printed circuit board; a partition, the partition is arranged at the blocking end, the partition is used to separate the welding foot portions from the aluminum substrate of the printed circuit board; and then by arranging a partition at the blocking end of the plug-in type electrical connector, the welding foot portions of the connecting terminals are physically separated from the aluminum substrate, thereby avoiding direct contact between the welding foot portions and the aluminum substrate due to deformation or external force during long-term use of the connecting terminals, causing a short circuit in the circuit, and causing a liquid crystal display failure, thereby improving the safety of the plug-in type electrical connector and ensuring the stability of electrical transmission.

[0047] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A plug-in type electrical connector for a liquid crystal display device, characterized in that: The plug-in type electrical connector comprises: A plurality of connection terminals, wherein the plurality of connection terminals include a main body portion and a solder foot portion; A base, the base having an insertion end and a blocking end arranged opposite to each other; a plurality of the main body parts are arranged in the insertion end, the solder foot parts are arranged on the blocking end, and the solder foot parts are used for soldering with a plurality of solder feet of a printed circuit board; A partition is arranged at the blocking end, and is used to separate the solder foot portion from the aluminum substrate of the printed circuit board.

2. The plug-in type electrical connector according to claim 1, characterized in that: The blocking end is provided with a left card platform and a right card platform, and the left card platform and the right card platform are both provided with a square card slot, and the horizontal cross section of the square card slot is L-shaped.

3. The plug-in type electrical connector according to claim 2, characterized in that: A left fixing block and a right fixing block are arranged on both sides of the partition, the left fixing block is inserted into the left card platform, and the right fixing block is inserted into the right card platform.

4. The plug-in type electrical connector according to claim 3, characterized in that: The plug-in type electrical connector further comprises an iron shell, the iron shell comprises an iron shell body, the iron shell body is used to cover the base; the bottom of the iron shell body is provided with an iron shell riveting opening; One end of the iron shell body is provided with a guiding bevel, and the other end of the iron shell body is provided with a plurality of iron shell clamping feet and a plurality of iron shell clamping grooves, wherein the plurality of iron shell clamping feet are used to prevent the iron shell body from warping up; the horizontal heights of the plurality of iron shell clamping grooves are lower than the horizontal heights of the plurality of iron shell clamping feet; the side wall of the iron shell is provided with two soldering feet, and the two soldering feet are used to be welded and fixed with the soldering feet of the printed circuit board; and the two side surfaces of the iron shell are provided with fixing clamping feet.

5. The plug-in type electrical connector according to claim 4, characterized in that: The bottom surface of the base is provided with a base clamping platform which is adapted to the shape of the iron shell clamping slot, and the base clamping platform is clamped into the iron shell clamping slot, and the base clamping platform is used to prevent the riveting opening of the iron shell from cracking.

6. The plug-in type electrical connector according to claim 5, characterized in that: The left side and the right side of the base are both provided with fixing grooves matched with the shape of the fixing pins, and the fixing pins are inserted into the fixing grooves.

7. The plug-in type electrical connector according to claim 6, characterized in that: A plurality of partition slots are arranged on one side of the partition facing the blocking end, and the plurality of partition slots are arranged at intervals, and the plurality of partition slots are used to cooperate with the iron shell feet to prevent the partition from moving up and down in the base.

8. The plug-in type electrical connector according to claim 7, characterized in that: The blocking end is provided with a plurality of iron shell foot slots corresponding to the plurality of iron shell foot slots, the iron shell foot slots are used for the iron shell foot to extend into and guide the iron shell foot to be inserted into the partition plate slot; Among them, when the iron shell is assembled to the outside of the base, the fixed pin is inserted into the fixed groove, the iron shell pin extends from the iron shell pin slot, and is inserted into the partition slot to prevent the partition from moving up and down; the base card is inserted into the iron shell slot.

9. The plug-in type electrical connector according to claim 7, characterized in that: The main body is provided with an extension fixing plate, and the blocking end is also provided with a plurality of terminal accommodating grooves, and the plurality of terminal accommodating grooves are used to accommodate the plurality of connecting terminals. The bottoms of the side groove walls of the plurality of terminal accommodating grooves are provided with a plurality of terminal fixing accommodating grooves, and the plurality of terminal fixing accommodating grooves are all matched with the extension fixing plate to provide fixing points for the plurality of connecting terminals; the insertion end is also provided with a guide ramp, and the guide ramp is used to provide a guide path for the insertion of the PCB connector board.

10. A liquid crystal display device, characterized in that: It comprises a plug-in type electrical connector as described in any one of claims 1 to 9.

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