Signal transmission connecting device

Abstract

The utility model relates to the technical field of signal transmission, and discloses a signal transmission connecting device which is characterized in that when the signal transmission connecting device is used, a first connecting mechanism is welded and connected to a circuit board, a second connecting mechanism is welded and connected to another circuit board, and an inserting part of the second connecting mechanism is aligned with an inserting groove of the first connecting mechanism to be inserted; the first terminal is connected with the second terminal, and the connection position of the first bent elastic part and the second elastic part is a contact; the vertical direction of the contact position is taken as a first reference axis, and the included angle between the first reference axis and the second elastic part is alpha, so that signal crosstalk can be reduced at the angle, and the signal transmission rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of signal transmission, in particular to a signal transmission connection device. Background Art

[0002] Terminal connections are components used in electronic devices to transmit electrical signals or power. They are typically used to connect circuit boards, cables, and other electronic components.

[0003] There are many ways to increase the transmission rate of terminal connectors. In order to increase the signal transmission rate, the prior art often considers the following two aspects: (1) Material selection: Using highly conductive materials, such as copper or silver, can reduce resistance and thus increase the signal transmission rate; (2) Contact area: Increasing the contact area of ​​the terminal can reduce resistance and improve current transmission efficiency.

[0004] With the advancement of technology, the requirements for signal transmission connection devices are getting higher and higher, and there is an urgent need to provide a signal transmission connection device. Utility Model Content

[0005] Based on the above, the purpose of the present invention is to provide a signal transmission connection device, which can improve the signal transmission rate under the premise of the same material and contact area.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a signal transmission connection device, comprising:

[0008] A first connection mechanism, comprising a first plastic shell, a shielding member and a plurality of first terminals, wherein the first plastic shell comprises a plug-in slot, the first terminal comprises a first soldering portion for connecting to a circuit board, the first soldering portion is connected to a first fixing portion, the first fixing portion is connected to a first contact portion, a first clamping portion and a first groove are arranged on a side of the first fixing portion away from the first soldering portion, and the first groove is located below the first clamping portion;

[0009] A second connecting mechanism, comprising a second plastic shell and a plurality of second terminals, wherein the second plastic shell comprises a plug-in portion capable of being inserted into the plug-in slot, the second terminal comprises a second soldering portion for connecting the circuit board, the second soldering portion is connected to a second fixing portion, a second clamping portion and a third clamping portion are respectively arranged on both sides of the second fixing portion, a second groove is arranged below the second clamping portion, a third groove is arranged below the third clamping portion, the second fixing portion is connected to a first curved elastic portion, the first curved elastic portion is connected to a second elastic portion, the second elastic portion extends obliquely, and a connection position between the first curved elastic portion and the second elastic portion is a contact point;

[0010] A plurality of positioning grooves are arranged at intervals on both sides of the first plastic shell, and a plurality of positioning blocks corresponding to the positioning grooves are arranged on both sides of the second plastic shell.

[0011] Preferably, when the plug-in portion of the second connecting mechanism is inserted into the plug-in slot of the first connecting mechanism, the first terminal and the second terminal contact at the contact position, with the vertical direction of the contact position as the first reference axis, and the angle between the first reference axis and the second elastic portion is α, 14°≤α≤20°.

[0012] Preferably, a plurality of mounting parts are spaced apart on both sides of the first plastic shell, and the mounting parts include connecting blocks connected to the plastic shell, and the connecting blocks are connected to the limiting blocks;

[0013] A plurality of mounting grooves are arranged at intervals on the shielding member, the mounting grooves include a first limiting groove, a second limiting groove and a heat dissipation groove, and the first limiting groove, the second limiting groove and the heat dissipation groove are in communication;

[0014] When installing the shielding component, align the limiting block with the second limiting groove, then move the shielding component upward, the connecting block is inserted into the first limiting groove, the first limiting groove is adapted to the connecting block, and the limiting block is connected to the outside of the first limiting groove.

[0015] Preferably, an elastic connection portion is provided at the top of the middle of the heat dissipation slot and extends downward, and a limiting protrusion is provided on the elastic connection portion, and the upper and lower end surfaces of the limiting protrusion are both arc-shaped.

[0016] Preferably, a card slot is provided on the outer side of the positioning block;

[0017] The second welding portion of the second terminal is further connected to a second positioning portion, and a side surface of the second positioning portion can be inserted into the slot.

[0018] Preferably, the first welding portion of the first terminal is further connected to a shielding connection portion, and the shielding connection portion is provided with a fourth clamping portion, and the fourth clamping portion can be clamped on the outside of the shielding member.

[0019] Preferably, limited wiring channels are provided at the bottom of both sides of the first plastic shell;

[0020] Routing connection parts are arranged on both sides of the shielding member, the routing connection parts are inserted into the limiting routing channel, and the routing connection parts are connected to the grounding part.

[0021] The beneficial effects of the utility model are:

[0022] The utility model provides a high-speed signal transmission device. When in use, a first connecting mechanism is welded and connected to a circuit board, and a second connecting mechanism is welded and connected to another circuit board. The plug-in portion of the second connecting mechanism is aligned with the plug-in slot of the first connecting mechanism and inserted, so that the first terminal and the second terminal are connected, and the connection position of the first curved elastic portion and the second elastic portion is a contact point; the vertical direction of the contact point position is taken as the first reference axis, and the angle between the first reference axis and the second elastic portion is α, 14°≤α≤20°, at which angle the crosstalk of the signal can be reduced and the signal transmission rate can be improved; at the same time, the second clamping portion and the third clamping portion of the second terminal form a misalignment, the second clamping portion and the third clamping portion are not on the same horizontal line, which can reduce the interference between the signals between the second clamping portion and the third clamping portion during transmission, and further improve the transmission rate. Under the premise of the same material and contact area, the signal transmission rate can be increased from 32Gbps to 60Gbps, which is close to doubling the signal transmission rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of a first connection mechanism of a signal transmission connection device is provided for an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the exploded structure of a first connecting mechanism of a signal transmission connecting device is provided for an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the structure of a second connection mechanism of a signal transmission connection device is provided for an embodiment of the utility model;

[0027] Figure 4 A schematic structural diagram of a second plastic housing of a signal transmission connection device is provided for an embodiment of the utility model;

[0028] Figure 5 A schematic diagram of the structure of a first terminal provided in an embodiment of the utility model;

[0029] Figure 6 Another structural schematic diagram of the first terminal provided in an embodiment of the utility model;

[0030] Figure 7A schematic diagram of the structure of a second terminal provided in an embodiment of the utility model;

[0031] Figure 8 Another structural schematic diagram of the second terminal provided in the embodiment of the utility model;

[0032] Fig. 9 A schematic diagram of the structure of the first terminal and the second terminal when in contact with each other provided in an embodiment of the utility model;

[0033] Fig.10 The frequency domain bandwidth diagram of mode 1 and mode 2 in the existing design;

[0034] Fig.11 It is a frequency domain bandwidth diagram under mode 1 and mode 2 in the embodiment of the present utility model.

[0035] In the figure:

[0036] 1. First connecting mechanism; 11. First plastic shell; 111. Insertion slot; 112. Positioning slot; 113. Mounting portion; 1131. Limiting block; 1132. Connecting block; 114. Limiting wiring channel; 12. Shielding member; 121. Mounting slot; 1211. First limiting slot; 1212. Second limiting slot; 1213. Heat dissipation slot; 122. Elastic connecting portion; 123. Limiting protrusion; 124. Wiring connecting portion; 125. Grounding portion; 13. First terminal; 131. First welding portion; 132. First fixing portion; 133. First contact portion; 1331. Beveled surface; 134. First clamping portion; 135. First groove; 136. Shielding connecting portion; 137. Fourth clamping portion;

[0037] 2. second connecting mechanism; 21. second plastic shell; 211. plug-in portion; 22. second terminal; 221. second welding portion; 222. second fixing portion; 223. second clamping portion; 224. third clamping portion; 225. second groove; 226. third groove; 227. first curved elastic portion; 228. second elastic portion; 229. second positioning portion; 23. positioning block; 231. slot;

[0038] 3. Contact point;

[0039] 41. First reference axis; 42. Second reference axis. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] like Figures 1 to 9As shown, the embodiment of the utility model provides a signal transmission connection device, including: a first connection mechanism 1, which includes a first plastic shell 11, a shielding member 12 and a plurality of first terminals 13, the plastic shell is a non-metallic part, which is formed by integral injection molding, the shielding member 12 and the terminal are both metal parts, which can be formed by injection molding or by stamping, the first plastic shell 11 includes a plug-in slot 111, the first terminal 13 includes a first welding portion 131 for connecting a circuit board, preferably, the bottom of the first welding portion 131 is provided with at least four side surfaces, and at least one side surface is provided with an arc-shaped notch (not shown in the figure), and by providing the arc-shaped notch, the solder When the soldering iron is fixed to the first soldering part 131, the soldering iron 131 is connected to the first fixing part 132, and the first fixing part 132 is connected to the first contact part 133. The side of the first contact part 133 is provided with a chamfered surface 1331. The chamfered surface 1331 can increase the heat dissipation area and ensure the stability of signal transmission. The first fixing part 132 is provided with a first clamping part 134 and a first groove 135 on the side away from the first soldering part 131. The first groove 135 is located below the first clamping part 134. Specifically, a first clamping part 134 and the first groove 135 are provided in the first plastic shell 11. The first clamping groove 231 corresponds to the matching clamping position (not shown) so that the first terminal 13 can be clamped in the first plastic shell 11; the second connecting mechanism 2 includes a second plastic shell 21 and a plurality of second terminals 22, the second plastic shell 21 includes a plug-in portion 211 that can be inserted into the plug-in slot 111, and the second terminal 22 includes a second soldering portion 221 for connecting the circuit board. Similarly, the second soldering portion 221 is provided with an arc-shaped notch near the bottom (not shown), the second soldering portion 221 is connected to the second fixing portion 222, and the second fixing portion 222 is provided with a second clamping portion 223 and a third clamping portion 223 on both sides thereof. 4, a second groove 225 is provided below the second clamping portion 223, and a third groove 226 is provided below the third clamping portion 224. Specifically, a clamping position corresponding to the second clamping portion 223, the third clamping portion 224, the second groove 225 and the third groove 226 is provided in the second plastic shell 21, and the second fixing portion 222 is connected to a first curved elastic portion 227, the first curved elastic portion 227 is U-shaped, the first curved elastic portion 227 is connected to a second elastic portion 228, the second elastic portion 228 is obliquely extended, and the connection position between the first curved elastic portion 227 and the second elastic portion 228 is a contact 3;When the plug-in portion 211 of the second connecting mechanism 2 is inserted into the plug-in slot 111 of the first connecting mechanism 1, the first terminal 13 and the second terminal 22 contact the contact 3 position, and the first contact portion 133 presses the contact 3 position. The vertical direction of the contact 3 position is the first reference axis 41, and the angle between the first reference axis 41 and the second elastic portion 228 is α, 14°≤α≤20°. The embodiment of the utility model provides a high-speed signal transmission device. When in use, the first connecting mechanism 1 is welded and connected to a circuit board, and the second connecting mechanism 2 is welded and connected to another circuit board. The plug-in portion 211 of the second connecting mechanism 2 is aligned with the plug-in slot 111 of the first connecting mechanism 1 and inserted so that the first terminal and the second terminal are connected. The connection position of the first curved elastic portion 227 and the second elastic portion 228 is the contact 3; the vertical direction of the contact 3 position is the first reference axis 41, and the angle between the first reference axis 41 and the second elastic portion 228 is α, 14°≤α≤20°, at which the crosstalk of the signal can be reduced and the signal transmission rate can be improved. Preferably, α=15°, and the signal transmission rate can reach the maximum. However, the transmission rate of 60Gbps cannot be achieved. When the second clamping portion 223 and the third clamping portion 224 of the second terminal 22 form a misalignment, the second clamping portion 223 and the third clamping portion 224 are not on the same horizontal line, as shown in detail; Figure 7 As shown, Figure 7 The horizontal dotted line in the figure is the second reference axis 42, and the line connecting the bottom of the second clamping portion 223 and the top of the third clamping portion 224 coincides with the second reference axis 42. Under this staggered structure, when the signal is transmitted on the second terminal 22, the mutual interference between the signals between the second clamping portion 223 and the third clamping portion 224 can be reduced during transmission, thereby further improving the transmission rate. Under the premise of the same material and contact area, the signal transmission rate can be increased to 60 Gbps, which can nearly double the signal transmission rate at most.

[0045] The test comparison report is as follows:

[0046] As is known in the prior art, the connector speed grade is based on the -3dB insertion loss point of the connector system. When the insertion loss is lower than -3dB and is continuous in the frequency domain above 0.5GHz, it is identified as the -3dB point. In end-to-end transmission mode, the -3dB point means that the signal amplitude obtained at the far end is at most 70% of the original signal, so it can be used to estimate the system bandwidth.

[0047] Two modes were used for experimental comparison in this experiment:

[0048] Mode 1 is shown in the following table. The single-ended test port is pin5, the differential signal test port is diff1 (pin7, pin9), and the single-ended port impedance is 50Ω.

[0049]

[0050] Mode 2 is shown in the following table. The single-ended test port is pin17, the differential signal test port is diff1 (pin1, pin3), and the single-ended port impedance is 50Ω.

[0051]

[0052] like Fig.10 As shown, from Fig.10 It can be seen that when the insertion loss of the existing connector is -3dB, the cutoff frequency of mode 1 is 7.7GHz; the cutoff frequency of mode 2 is 7.6GHz.

[0053] Fig.11 As shown, from Fig.11 It can be seen that when the insertion loss of the connector of the embodiment of the utility model is -3dB, the cutoff frequency of mode 1 is 12.6GHz, and the cutoff frequency of mode 2 is 14.9GHz.

[0054] A larger frequency domain bandwidth can provide a higher signal transmission rate. Fig.11 and Fig.10 By comparison, it can be seen that the connector provided by the embodiment of the utility model has a frequency domain bandwidth nearly twice that of the existing design.

[0055] The speed grade of a connector can be used to evaluate its performance under high-frequency signals and is an important performance parameter of the connector. In order to facilitate the evaluation of the speed grade, the measured -3dB point is rounded to the nearest half-GHz level, and the speed grade corresponding to the -3dB insertion loss under PAM 4 encoding is calculated. The specific speed grade comparison is as follows:

[0056] Signal input -3dB point Speed ​​Rating Existing design pattern 1 8GHz 16GHz / 32Gbps Existing design pattern 2 9GHz 32GHz / 36Gbps Embodiment Mode 1 of the Invention 13GHz 26GHz / 52Gbps Embodiment Mode 1 of the Invention 15GHz 30GHz / 60Gbps

[0057] It can be seen from the above table that, under the premise of the same material and contact area, the signal transmission rate can be increased to 60Gbps, which can increase the signal transmission rate by nearly two times at most.

[0058] As a preferred embodiment of the present invention, Figures 1 to 4 As shown, in order to solve the positioning problem when plugging the first connecting mechanism 1 and the second connecting mechanism 2, a plurality of positioning grooves 112 are arranged at intervals on both sides of the first plastic shell 11, and a plurality of positioning blocks 23 corresponding to the positioning grooves 112 are arranged on both sides of the second plastic shell 21. When plugging the first connecting mechanism 1 and the second connecting mechanism 2, the positioning blocks 23 and the positioning grooves 112 can be used for positioning plugging.

[0059] The traditional shielding member 12 is mainly bonded to the plastic housing by gluing, which is not only troublesome, but also easy to fall off due to the heat of the connector. As a preferred embodiment of the utility model, Figure 1 and 2 As shown, in order to solve the problem of installation and falling off of the shielding member 12, a plurality of mounting portions 113 are also arranged at intervals on both sides of the first plastic shell 11, and the mounting portion 113 includes a connecting block 1132 connected to the first plastic shell 11, and the connecting block 1132 is connected to the limiting block 1131; a plurality of mounting grooves 121 are arranged at intervals on the shielding member 12, and the mounting grooves 121 include a first limiting groove 1211, a second limiting groove 1212 and a heat dissipation groove 1213, and the first limiting groove 1211, the second limiting groove 1212 and the heat dissipation groove 1213 are connected; the first limiting groove 1211 and the second limiting groove 1212 are respectively adapted to the connecting block 1132 and the limiting block 1131. The heat dissipation groove 1213 increases the direct contact area between the first plastic shell 11 and the air, increases the heat dissipation effect, and ensures the stability of signal transmission. When installing the shielding member 12, align the limiting block 1131 with the second limiting groove 1212, and then move the shielding member 12 upward. The connecting block 1132 is inserted into the first limiting groove 1211. The first limiting groove 1211 is adapted to the connecting block 1132, and the limiting block 1131 is clamped to the outside of the first limiting groove 1211. At the same time, the first welding portion 131 of the first terminal 13 is also connected to the shielding connecting portion 136, and the shielding connecting portion 136 is provided with a fourth clamping portion 137. The fourth clamping portion 137 can be clamped on the outside of the shielding member 12, and the fourth clamping portion 137 clamps the shielding member 12 tightly against the outside of the first plastic shell 11. The shielding member 12 is clamped by the connecting block 1132, the limiting block 1131 and the fourth clamping portion 137, so that the shielding member 12 is closely attached to the first plastic shell 11, which is easy to install, does not require glue coating, and is not easy to fall off. Furthermore, one side of the positioning groove 112 is an open surface, and the shielding member 12 can surround the open surface of the positioning groove 112, so that the positioning groove 112 forms a closed loop, and the top of the middle of the heat dissipation groove 1213 is extended downward to be provided with an elastic connecting portion 122, and a limiting protrusion 123 is provided on the elastic connecting portion 122, and the upper and lower end surfaces of the limiting protrusion 123 are both arc-shaped. When the second connecting mechanism 2 is inserted into the first connecting mechanism 1, the positioning block 23 is inserted into the positioning groove 112. Due to the presence of the elastic connecting part 122, the positioning block 23 will be squeezed into the positioning groove 112. When fully inserted, the arc surface of the limiting protrusion 123 will squeeze the positioning block 23 to prevent the positioning block 23 from separating from the positioning groove 112, thereby ensuring the stability of the first connecting mechanism 1 and the second connecting mechanism 2, thereby ensuring the stability of signal transmission.

[0060] As a preferred embodiment of the present invention, Figure 3 , 4 As shown in FIG. 6 , in order to further facilitate positioning, a slot 231 is provided on the outer side of the positioning block 23 ; the second welding portion 221 of the second terminal 22 is also connected to a second positioning portion 229 , and the side surface of the second positioning portion 229 can be inserted into the slot 231 .

[0061] As a preferred embodiment of the present invention, Figure 1 and 2 As shown, in order to facilitate the routing of the grounding of the shielding member 12, limited routing channels 114 are provided at the bottom of both sides of the first plastic shell 11; routing connecting parts 124 are provided on both sides of the shielding member 12, and the routing connecting parts 124 are inserted into the limited routing channels 114, and the routing connecting parts 124 are connected to the grounding parts 125.

[0062] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A signal transmission connection device, characterized in that: include: A first connecting mechanism (1), comprising a first plastic shell (11), a shielding member (12) and a plurality of first terminals (13), wherein the first plastic shell (11) comprises a plug-in slot (111), the first terminal (13) comprises a first soldering portion (131) for connecting to a circuit board, the first soldering portion (131) is connected to a first fixing portion (132), the first fixing portion (132) is connected to a first contact portion (133), a first clamping portion (134) and a first groove (135) are provided on a side of the first fixing portion (132) away from the first soldering portion (131), and the first groove (135) is located below the first clamping portion (134); The second connection mechanism (2) comprises a second plastic shell (21) and a plurality of second terminals (22), wherein the second plastic shell (21) comprises a plug-in portion (211) capable of being inserted into the plug-in slot (111), and the second terminal (22) comprises a second soldering portion (221) for connecting to a circuit board, the second soldering portion (221) is connected to a second fixing portion (222), and the second fixing portion (222) is respectively provided with a second clamping portion (223) and a third clamping portion (224) on both sides thereof. ), a second groove (225) is provided below the second clamping portion (223), a third groove (226) is provided below the third clamping portion (224), the second fixing portion (222) is connected to a first curved elastic portion (227), the first curved elastic portion (227) is connected to a second elastic portion (228), the second elastic portion (228) extends obliquely, and the connection position between the first curved elastic portion (227) and the second elastic portion (228) is a contact point (3); A plurality of positioning grooves (112) are arranged at intervals on both sides of the first plastic shell (11), and a plurality of positioning blocks (23) corresponding to the positioning grooves (112) are arranged on both sides of the second plastic shell (21).

2. A signal transmission connection device according to claim 1, characterized in that: When the plug-in portion (211) of the second connecting mechanism (2) is inserted into the plug-in slot (111) of the first connecting mechanism (1), the first terminal (13) and the second terminal (22) contact the contact point (3) position, with the vertical direction of the contact point (3) position being the first reference axis (41), and the angle between the first reference axis (41) and the second elastic portion (228) being α, 14°≤α≤20°.

3. A signal transmission connection device according to claim 1, characterized in that: A plurality of mounting portions (113) are also spaced apart on both sides of the first plastic shell (11), wherein the mounting portions (113) include a connecting block (1132) connected to the first plastic shell (11), and the connecting block (1132) is connected to a limiting block (1131); A plurality of installation grooves (121) are arranged at intervals on the shielding member (12); the installation grooves (121) include a first limiting groove (1211), a second limiting groove (1212) and a heat dissipation groove (1213); the first limiting groove (1211), the second limiting groove (1212) and the heat dissipation groove (1213) are in communication with each other; When installing the shielding component (12), the limiting block (1131) is aligned with the second limiting groove (1212), and then the shielding component (12) is moved upward, the connecting block (1132) is snapped into the first limiting groove (1211), the first limiting groove (1211) is adapted to the connecting block (1132), and the limiting block (1131) is snapped onto the outside of the first limiting groove (1211).

4. A signal transmission connection device according to claim 3, characterized in that: An elastic connection portion (122) is provided at the top of the middle of the heat dissipation groove (1213) and extends downwards. A limiting protrusion (123) is provided on the elastic connection portion (122). The upper and lower end surfaces of the limiting protrusion (123) are both arc-shaped.

5. A signal transmission connection device according to claim 3, characterized in that: A slot (231) is provided on the outer side of the positioning block (23); The second welding portion (221) of the second terminal (22) is also connected to a second positioning portion (229), and the side surface of the second positioning portion (229) can be inserted into the slot (231).

6. A signal transmission connection device according to claim 5, characterized in that: The first welding portion (131) of the first terminal (13) is also connected to a shielding connection portion (136), and the shielding connection portion (136) is provided with a fourth clamping portion (137), and the fourth clamping portion (137) can be clamped on the outside of the shielding member (12).

7. A signal transmission connection device according to claim 6, characterized in that: The bottoms of both sides of the first plastic shell (11) are provided with limited wiring channels (114); Routing connection parts (124) are provided on both sides of the shielding member (12), the routing connection parts (124) are inserted into the position-limiting routing channel (114), and the routing connection parts (124) are connected to a grounding part (125).

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