Cable connector assembly

Abstract

A cable connector assembly comprises low-speed signal conductive parts arranged on the upper surface and the lower surface of a circuit board, and a low-speed signal grounding part is only arranged on the upper surface of the circuit board. The low-speed signal grounding part is provided with a grounding structure, and the grounding structure bends and extends to form an upper clamping part and a lower clamping part. The upper surface and the lower surface of the circuit board are both provided with low-speed signal lines, and the low-speed signal lines are arranged on the upper clamping part and the lower clamping part in an up-down symmetry mode. The low-speed signal line is provided with a low-speed signal conductive core and a shielding part. The low-speed signal conductive core is electrically connected to the low-speed signal conductive part, and the shielding part is clamped between the upper clamping part and the lower clamping part, so that the grounding mode of the coaxial cable can be improved, and the low-speed signal wire achieves a good grounding effect through the grounding structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cable connector assembly, especially a cable connector assembly capable of improving the grounding mode of the coaxial cable. BACKGROUND

[0002] Taiwan new patent M251380 discloses a cable connector assembly, including an insulating body and a plurality of circuit modules accommodated in the insulating body, each circuit module has a circuit board accommodated in the insulating body, a grounding sheet held on the circuit board and a plurality of coaxial cables, and each coaxial cable has a conductive core wire, an inner insulating layer covering the conductive core wire, a metal shielding layer covering the inner insulating layer and an outer insulating skin covering the outermost layer of the coaxial cable, the outer insulating skin of one end of each coaxial cable is stripped to expose part of the metal shielding layer, wherein the exposed metal shielding layer is welded to the grounding sheet, and the core wire is welded to the circuit board.

[0003] Chinese utility model patent No. 104218350 discloses a plug-in electrical connector, including a circuit board, a plurality of conductive terminals, a plurality of wire pads and grounding sheets arranged on the surface of the circuit board, and a plurality of coaxial cables, each coaxial cable has a conductive core wire, an inner insulating layer covering the conductive core wire, a braided layer covering the inner insulating layer and an outer insulating layer covering the braided layer, wherein the conductive core wire is fixed to the wire pad and is fixed and electrically connected to the conductive terminal by welding, the braided layer is fixed to the grounding sheet by welding, thereby the grounding sheet can effectively ground the coaxial cable, thereby avoiding signal interference between the coaxial cable and the conductive terminal.

[0004] As described above, the known coaxial cable is provided with a conductor, and the outer layer of the conductor sequentially covers an inner insulating layer, a shielding layer and an outer insulating layer, wherein the shielding layer is arranged as a ground wire, and by welding the shielding layer to a grounding area on the circuit board, signal interference can be avoided and the effect of grounding the coaxial cable can be achieved. In the prior art, the hot bar process is usually used, that is, tin paste is first applied to the welding area of the circuit board, and the tin paste is melted by heating, for example, through a reflow oven, then the wire is placed in the welding area coated with molten tin paste, and the wire is then pressed and welded to the circuit board using a hot press head, so that all the wires can be welded to the circuit board at one time. However, the shielding layer of the coaxial cable is usually made of non-magnetic conductive materials such as braided copper foil and aluminum foil, and in practice, when the braided shielding layer is welded to the circuit board by hot bar process, the shielding layer may be scattered and branched, resulting in poor welding, and thus the shielding layer of the coaxial cable cannot effectively achieve the anti-interference effect.

[0005] Therefore, it is necessary to provide a cable connector assembly capable of improving the grounding mode of the coaxial cable to overcome the problem that the shielding layer of the coaxial cable is not easy to be welded to the circuit board and effectively improve the anti-interference ability of the coaxial cable. Utility model content

[0006] The utility model discloses a cable connector assembly, can improve the grounding mode of coaxial cable.

[0007] In order to overcome the deficiency of prior art, the utility model discloses a cable connector assembly, including a circuit board, at least one ground structure fixed on the circuit board and a plurality of low speed signal lines electrically connected to the circuit board. The circuit board is provided with opposite upper surface and lower surface, the upper surface is provided with at least one low speed signal ground part and at least one low speed signal conductive part, and the lower surface is provided with at least one low speed signal conductive part. The ground structure is provided with a base and a clamping part extending along the base, the base is electrically connected to the low speed signal ground part, and the clamping part has an upper clamping part arranged on the upper surface and a lower clamping part arranged on the lower surface. A plurality of low speed signal lines have at least one upper low speed signal line and at least one lower low speed signal line, the upper low speed signal line and the lower low speed signal line are provided with a low speed signal conductive core and a shielding part arranged outside the low speed signal conductive core, the upper low speed signal line and the lower low speed signal line are arranged symmetrically on the upper surface and the lower surface respectively, the low speed signal conductive core of the upper low speed signal line and the lower low speed signal line is electrically connected to the low speed signal conductive part of the upper surface and the lower surface of the circuit board respectively, and the shielding part of the upper low speed signal line and the lower low speed signal line is clamped in the upper clamping part and the lower clamping part respectively.

[0008] Further, the upper surface and the lower surface are provided with at least one high speed signal conductive part and at least one high speed signal ground part, and the upper surface and the lower surface are respectively arranged with at least one high speed signal line, the high speed signal line is provided with at least two high speed signal conductive cores and at least one high speed signal ground line, the high speed signal conductive core is electrically connected to the high speed signal conductive part, and the high speed signal ground line is electrically connected to the high speed signal ground part.

[0009] Further, the low speed signal line is a coaxial cable.

[0010] Further, the shielding part is a woven mesh conductive material.

[0011] Further, the base is provided in a flat shape, the upper clamping portion is bent and extended upwards along the left and right sides of the front end of the base, the lower clamping portion is bent and extended downwards along the left and right sides of the rear end of the base and is arranged at the rear end edge of the circuit board, and the base is welded to the low-speed signal grounding portion of the upper surface.

[0012] Further, the base is provided with at least one through hole.

[0013] Further, the base is arranged at the upper end of the low-speed signal grounding portion.

[0014] Further, the base is arranged between the low-speed signal grounding portion and the low-speed signal conductive portion.

[0015] Therefore, the cable connector assembly provided with the grounding structure can be used to fix the grounding structure to the low-speed signal grounding portion, fix the low-speed signal line through the clamping portion, make the shielding portion contact the grounding structure to achieve good grounding effect, improve the grounding mode of the coaxial cable line, overcome the problem that the shielding portion is not easy to be welded to the circuit board, and effectively improve the anti-interference ability of the coaxial cable line. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the cable connector assembly of the utility model.

[0017] Figure 2 is another angle perspective view of the cable connector assembly of the utility model.

[0018] Figure 3 is an exploded view of the cable connector assembly of the utility model.

[0019] Figure 4 is a top view of the cable connector assembly of the utility model.

[0020] Figure 5 is a partial exploded view of the cable connector assembly of the utility model.

[0021] Figure 6 is a sectional view of the cable connector assembly of the utility model along the I-I line. Figure 4

[0022] Figure 7 is a partial enlarged view of the circled portion A of the cable connector assembly of the utility model. Figure 1

[0023] Figure 8 is a sectional view of the cable connector assembly of the utility model along the II-II line. Figure 4 DETAILED DESCRIPTION​​​

[0024] In order to make the technical content, structural features, purposes and technical effects of the utility model clear, the following embodiments are taken as examples and described in detail with reference to the drawings.

[0025] Please refer to Figures 1 to 4 The utility model provides a kind of cable connector assembly 100, including a circuit board 1, at least one ground structure 2 fixed to the circuit board 1 and the plurality of low-speed signal lines 3 and the plurality of high-speed signal lines 4 electrically connected to the circuit board 1.The circuit board 1 includes opposite upper surface 101 and lower surface 102, the low-speed signal line 3 and the high-speed signal line 4 are symmetrically arranged side by side along the upper surface 101 and the lower surface 102, and the low-speed signal line 3 and the high-speed signal line 4 are arranged respectively in the left and right sides of the circuit board 1.The upper surface 101 is provided with at least one low-speed signal ground part 11, at least one low-speed signal conductive part 12, at least one high-speed signal ground part 13 and at least one high-speed signal conductive part 14.The lower surface 102 is provided with at least one low-speed signal conductive part 12, at least one high-speed signal ground part 13 and at least one high-speed signal conductive part 14.The ground structure 2 is fixed and electrically connected to the low-speed signal ground part 11, and the ground structure 2 is used to hold the low-speed signal line 3, and the low-speed signal line 3 realizes grounding effect.In the embodiment, the lower surface 102 of the circuit board 1 does not need to be provided with the low-speed signal ground part 11, so that the low-speed signal line 3 of the lower surface 102 can be electrically connected to the low-speed signal ground part 11 of the upper surface 101 of the circuit board 1 by the ground structure 2, to realize the requirement of grounding.

[0026] Please refer to Figure 5The grounding structure 2 is made of electrically conductive material. The grounding structure 2 comprises a flat base 21 and a clamping portion 22 extending from the base 21. The base 21 is electrically connected to the low-speed signal ground portion 11, and the clamping portion 22 clamps the low-speed signal line 3. In this embodiment, the grounding structure 2 can be integrated with the circuit board 1, or the base 21 is soldered to the low-speed signal ground portion 11, so that the grounding structure 2 is fixed to the circuit board 1. The base 21 can further comprise at least one through hole 211, which can accommodate excess solder during soldering of the grounding structure 2 to the circuit board 1, thereby preventing the grounding structure 2 from floating or tilting. The clamping portion 22 comprises an upper clamping portion 221 arranged on the upper surface 101 and a lower clamping portion 222 arranged on the lower surface 102. The upper clamping portion 221 clamps the low-speed signal line 3 placed on the upper surface 101, and the lower clamping portion 222 clamps the low-speed signal line 3 placed on the lower surface 102. The upper clamping portion 221 extends upward from the left and right sides of the front end of the base 21, and is arranged at the upper end of the low-speed signal ground portion 11 or between the low-speed signal ground portion 11 and the low-speed signal conductive portion 12. The lower clamping portion 222 extends downward from the left and right sides of the rear end of the base 21, and is arranged at the rear edge of the circuit board 1.

[0027] Please refer to Figure 1 , Figure 2 and Figure 5 , the plurality of low-speed signal lines 3 are coaxial cables. The plurality of low-speed signal lines 3 comprise at least one upper low-speed signal line 3 and at least one lower low-speed signal line 3. The upper low-speed signal line 3 and the lower low-speed signal line 3 are symmetrically arranged on the upper surface 101 and the lower surface 102 of the circuit board 1, respectively. The upper low-speed signal line 3 is clamped to the upper clamping portion 221, so that the upper low-speed signal line 3 is electrically connected to the low-speed signal ground portion 11 through the grounding structure 2. At the same time, the lower low-speed signal line 3 is clamped to the lower clamping portion 222, so that the lower low-speed signal line 3 is electrically connected to the low-speed signal ground portion 11 through the grounding structure 2.

[0028] Please refer to Figure 5 and Figure 6Each low-speed signal line 3 is provided with at least one low-speed signal conductive core 31. The low-speed signal conductive core 31 is sequentially covered with an inner insulating part 32, a shielding part 33, and an outer insulating part 34. The low-speed signal conductive core 31 is electrically connected to the low-speed signal conductive part 12. The outer insulating part 34 at one end of the low-speed signal line 31 is removed, exposing part of the shielding part 33 to the outside. The shielding part 33 is a woven mesh conductive material. The upper clamping part 221 and the lower clamping part 222 can simultaneously clamp and fix the exposed shielding part 33. In this way, the low-speed signal line 3 can achieve grounding by contacting the grounding structure 2 through the shielding part 33, thereby preventing interference signals from entering the low-speed signal conductive core 31 and reducing the loss of transmitted signals. Since the braided mesh shielding structure of the coaxial cable is not easily bonded to the circuit board 1 by hot-press soldering, the low-speed signal line 3 of the cable connector assembly 100 of this invention uses the grounding structure 2 to clamp and fix the braided mesh shielding part 33 instead of the hot-press soldering process. This prevents the braided mesh shielding layer 33 from spreading or splitting during the soldering process, thus preventing problems such as poor soldering and poor anti-interference effect. In this embodiment, the upper clamping part 221 and the lower clamping part 222 are arranged opposite each other along the vertical direction of the circuit board 1, thus reducing the volume of the grounding structure 2.

[0029] Please see Figure 7 and Figure 8 Each high-speed signal line 4 is a differential signal pair, and has at least two high-speed signal conductive cores 41. Each high-speed signal conductive core 41 is covered with an inner insulating layer 42. A high-speed signal grounding wire 45 is provided between the two inner insulating layers 42. A covering layer 43 and an outer insulating layer 44 are sequentially covered on the outside of the two inner insulating layers 42 and the high-speed signal grounding wire 45. The high-speed signal grounding wire 45 contacts the covering layer 44. The high-speed signal conductive core 41 is electrically connected to the high-speed signal conductive part 14, and the high-speed signal grounding wire 45 is in contact with the high-speed signal grounding part 13 to achieve a grounding effect. In this embodiment, the high-speed signal line 4 can be soldered to the circuit board 1 by hot-press soldering. First, solder paste (not shown) is applied to the high-speed signal conductive part 14 and the high-speed signal grounding part 13, and the solder paste is melted by heating in a reflow oven. Then, the high-speed signal conductive core 41 is placed on the high-speed signal conductive part 14 and the high-speed signal grounding wire 45 is placed on the high-speed signal grounding part 13. Finally, a hot press head (not shown) is used for pressure soldering, which can combine the high-speed signal line 4 with the circuit board 1.

[0030] In summary, this utility model provides a cable connector assembly 100, comprising a plurality of low-speed signal lines 3 and a plurality of high-speed signal lines 4 arranged on the upper surface 101 and the lower surface 102 of the circuit board 1, and a grounding structure 2 fixed to the grounding portion 11 of the grounding portion 11 on the upper surface 101 of the circuit board 1. The plurality of high-speed signal lines 4 can be soldered to the upper surface 101 and the lower surface 102 of the circuit board 1 by thermoforming soldering. The plurality of low-speed signal lines 3 are clamped in the clamping portion 22 of the grounding structure 2. The shielding portion 33 of the upper low-speed signal line 3 is clamped in the upper clamping portion 221. The shield 33 of the low-speed signal line 3 is clamped in the lower clamping part 222. The base 21 of the grounding structure 2 is electrically connected to the low-speed signal grounding part 11 of the upper surface 101 of the circuit board 1. Therefore, the shield 33 of the lower low-speed signal line 3 can be electrically connected to the low-speed signal grounding part 11 of the upper surface 101 of the circuit board 1 through the grounding structure 2, so that the upper low-speed signal line 3 and the lower low-speed signal line 3 can achieve a common ground structure, thereby achieving a good grounding effect. In this way, the grounding method of the coaxial cable can be improved, thereby overcoming the problem that the shield 33 is not easy to solder to the circuit board 1, and effectively improving the anti-interference capability of the low-speed signal line 3. In addition, the lower surface 102 of the circuit board 1 does not need to be provided with a low-speed signal grounding part 11, which can also increase the circuit layout range of the circuit board 1. Furthermore, the upper clamping part 221 and the lower clamping part 222 are arranged opposite each other in the vertical direction of the circuit board 1, thus reducing the volume of the grounding structure 2.

Claims

1. A cable connector assembly, characterized in that, The device includes: a circuit board having an upper surface and a lower surface opposite to each other; the upper surface having at least one low-speed signal grounding portion and at least one low-speed signal conductive portion; and the lower surface having at least one of the low-speed signal conductive portions; and at least one grounding structure fixed to the circuit board, the grounding structure having a base and a clamping portion extending and bending along the base; the base being electrically connected to the low-speed signal grounding portion; and the clamping portion having an upper clamping portion disposed on the upper surface and a lower clamping portion disposed on the lower surface. A plurality of low-speed signal lines are electrically connected to the circuit board. The plurality of low-speed signal lines have at least one upper low-speed signal line and one lower low-speed signal line. Each of the upper low-speed signal line and the lower low-speed signal line is provided with a low-speed signal conductive core and a shielding portion disposed outside the low-speed signal conductive core. The upper low-speed signal line and the lower low-speed signal line are respectively symmetrically disposed on the upper surface and the lower surface. The low-speed signal conductive cores of the upper low-speed signal line and the lower low-speed signal line are respectively electrically connected to the low-speed signal conductive portions on the upper surface and the lower surface of the circuit board. The shielding portions of the upper low-speed signal line and the lower low-speed signal line are respectively clamped in the upper clamping portion and the lower clamping portion.

2. The cable connector assembly according to claim 1, characterized in that: Both the upper surface and the lower surface are provided with at least one high-speed signal conductive part and at least one high-speed signal grounding part. At least one high-speed signal line is arranged on the upper surface and the lower surface respectively. The high-speed signal line is provided with at least two high-speed signal conductive cores and at least one high-speed signal grounding line. The high-speed signal conductive cores are electrically connected to the high-speed signal conductive part, and the high-speed signal grounding line is electrically connected to the high-speed signal grounding part.

3. The cable connector assembly according to claim 1, characterized in that: The low-speed signal line is a coaxial cable.

4. The cable connector assembly according to claim 1, characterized in that: The shielding part is a woven mesh of conductive material.

5. The cable connector assembly according to claim 1, characterized in that: The base is flat, the upper clamping part bends upward along the left and right sides of the front end of the base, the lower clamping part bends downward along the left and right sides of the rear end of the base and is disposed at the rear edge of the circuit board, and the base is soldered to the low-speed signal grounding part on the upper surface.

6. The cable connector assembly according to claim 5, characterized in that: The base has at least one perforation.

7. The cable connector assembly according to claim 5, characterized in that: The base is located at the upper end of the low-speed signal grounding part.

8. The cable connector assembly according to claim 5, characterized in that: The base is disposed between the low-speed signal grounding part and the low-speed signal conductive part.

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