TWM619867U - High-speed signal transmission cable - Google Patents

Abstract

The model relates to a high-speed signal transmission cable, which includes a cable bundle and at least one connector module. The cable bundle is composed of a coaxial cable and a tube sleeve wrapped around the coaxial cable. The connector module includes a pogo pin, a spring sleeve, a kit base and a signal converter. The base of the kit is a stepped member with a protrusion in the center and through holes arranged in an array at the protrusion. The bottom of the base of the kit has a depression corresponding to the center protrusion. The signal converter is provided with a communication with the base of the kit. The through hole corresponding to the hole position is inserted into the recess of the kit base and the corresponding through holes communicate with each other. The spring sleeve is sleeved outside the pogo pin, and the tail of the pogo pin passes through the through hole of the kit base and the signal converter. Solder to the signal wire or ground wire at one end of the coaxial cable.

Description

A high-speed signal transmission cable

The utility model relates to a high-speed signal transmission cable, which belongs to the technical field of chip testing devices.

Automatic wafer test equipment (ATE) is usually used in the field of wafer manufacturing to perform logical tests on the manufactured wafers to ensure that the performance of the wafers meets the design requirements. At present, high-speed cables composed of multiple sets of coaxial cables and pogo pin modules are usually used in such equipment to transmit signals. The two ends of the coaxial cable are stripped and the signal wire and ground wire are respectively welded to the pogo pin module, and then welded Epoxy glue is poured everywhere for protection and isolation, but this approach has the following disadvantages:

1. The welding of the cable and the pogo pin destroys the impedance environment, which can easily cause sudden changes in the signal there, and is greatly affected by the welding process and the level of workers.

2. Since each pair of pogo pins is welded to the same coaxial cable, the high-speed signals transmitted by the cable cores are independent, and the GND is not short-circuited to a plane at the front-end pogo pin module. The loop current of each signal can only return to the ATE along the ground probe paired with it. It is not an optimal ground loop. There is no GND around the signal for shielding, which can easily cause signal instability and attenuation, and the signal cannot be guaranteed. Single-ended transmission within ±10%.

3. When the tail of the pogo pin module of the array is welded to the cable, since there is no additional auxiliary structure, only the pogo pin and the coaxial line solder joint support are likely to cause disconnection and deformation.

The utility model provides a high-speed signal transmission cable, which can effectively reduce the attenuation and mutation of the high-frequency signal transmission process, and reduce the risk of disconnection and deformation.

The technical scheme of the present invention is as follows. A high-speed signal transmission cable, comprising: a cable bundle and at least one connector module, wherein the cable bundle is composed of multiple sets of coaxial cables and pipe sleeves wrapped around the multiple sets of coaxial cables, and the connector modules include a plurality of sets of coaxial cables. Pogo pins, multiple spring sleeves, kit base and signal converter. The kit base is a stepped member with a protrusion in the center and a plurality of first through holes arranged in an array at the protrusion. The bottom of the kit base corresponds to The central protrusion has a depression, the signal converter is provided with a plurality of second through holes corresponding to the positions of the plurality of first through holes of the kit base, the two corresponding first through holes after being embedded in the depression of the kit base, and The second through holes communicate with each other, the spring sleeves are sleeved outside the pogo pins, and the tail of each pogo pin passes through the first through hole of the kit base and the second through hole of the signal converter and connects to one end of the multiple sets of coaxial cables. The signal wire or ground wire is welded.

Further, at least one bolt through hole is opened on both sides of the protrusion in the center of the kit base, and the bolt is used for fixed connection with other equipment.

Further, the internal resistance of the multiple sets of coaxial cables is 50-75 ohms, the tube sleeve is a soft rubber tube, and multiple cross-shaped plastic skeletons are arranged inside the tube sleeve for separating and protecting the multiple sets of coaxial cables.

Further, both ends of the multiple sets of coaxial cables are connected to the connector module, and a mold is used to pour epoxy resin glue at the welding connection between the tail of each pogo pin and the multiple sets of coaxial cables to form a solid protective layer And unify the impedance of each welding point of the multiple sets of coaxial cables.

Further, one end of the multiple sets of coaxial cables is connected to the connector module, and a mold is used to pour epoxy glue at the welding connection between the tail of each pogo pin and the multiple sets of coaxial cables to form a solid protective layer and unify The impedance of each welding point of the multiple sets of coaxial cables, and the other end is directly connected to equipment or other types of interfaces as required.

Further, the second through hole in the signal converter is divided into a plurality of insulating holes and a plurality of ground holes. The pogo pin inserted into the ground hole is a ground probe, the pogo pin inserted into the insulating hole is a signal probe, and the insulating hole and the ground hole are mutually connected. Spaced, each insulation hole is surrounded by grounding holes, and each signal probe is surrounded by 4 grounding probes that share the ground. The signal is not easy to be disturbed; the inner diameter of the grounding hole is the same as the outer diameter of the tail of the pogo pin , The grounding holes are connected to each other, and the inner diameter of the insulating hole is slightly larger than the outer diameter of the tail of the pogo pin, so that the glue can flow smoothly into it during glue filling.

Furthermore, the signal converter is a multi-layer PCB board, in which the ground hole is plated with copper and connected to each other through one of the multi-layer PCB boards.

Furthermore, the signal converter is a whole piece of conductive metal. The pogo pin passing through the grounding hole is in close contact with the grounding hole, and the conductive metal is connected to each other to form a grounding net. The pogo pin passing through the insulating hole does not contact the insulating hole, and the two The gaps between them are insulated by epoxy resin glue.

The beneficial effects of the present invention are as follows.

(1) This utility model is equipped with a signal converter to ensure that the coaxial cables are connected to each other to form an optimal ground loop, which solves the problem of easy interference and uncontrollable single-ended transmission of high-speed transmission cables under high-frequency conditions. Improve the signal transmission quality of high-speed signal lines.

(2) Through the grounding holes and insulation holes of the signal converter, ensure that there are four grounding probes around each signal probe to form a shield.

(3) The signal converter makes the pogo pin and the coaxial cable welding machine available, and reduces the requirements for the level of workers during manual welding.

(4) The support point is formed by the signal converter to improve the mechanical strength, which can avoid the shortcoming that the spring probe is not supported and easy to deform, and after the epoxy resin is poured, the welding point of the spring pin and the coaxial cable can be ensured to be firm and not easy to be damaged. , And form a unified impedance environment.

With regard to the features, implementation, and effects of this case, the preferred embodiments are described in detail as follows in conjunction with the drawings.

The following describes the utility model in detail with reference to the drawings and specific embodiments.

As shown in Figures 1 to 3, a high-speed signal transmission cable includes a cable bundle 2 and at least one connector module 1. The cable bundle 2 consists of multiple sets of coaxial cables 21 and a tube wrapped outside the coaxial cable. It consists of a sleeve 22. The connector module 1 includes a plurality of spring pins 112, a plurality of spring sleeves 111, a kit base 11 and a signal converter 13. The kit base 11 has a protrusion in the center and an array arrangement at the protrusion The bottom of the kit base 11 has a depression corresponding to the central protrusion, and the signal converter 13 is provided with a plurality of second through holes corresponding to the position of the first through hole of the kit base 11. The corresponding first through holes and second through holes of the two after being embedded in the recess of the kit base 11 communicate with each other, the spring sleeve 111 is sleeved outside the pogo pin 112, and the tail of the pogo pin 112 passes through the kit base 11 and signal conversion The second through hole of the device 13 is welded to the signal wire or the ground wire at one end of the coaxial cable 21.

At least one bolt through hole 14 is opened on both sides of the boss in the center of the kit base 11, and the bolt 12 is used for fixed connection with other equipment.

The internal resistance of the coaxial cable 21 is 50-75 ohms, the tube sleeve 22 is a soft rubber tube, and a plurality of cross-shaped plastic skeletons are arranged inside the tube sleeve 22 for separating and protecting the coaxial cable 21.

In one embodiment, both ends of the coaxial cable 21 are connected to the connector module 1, and a mold is used to inject epoxy resin into the welding connection between the tail of each pogo pin 112 and the coaxial cable 21 to form a solid protective layer , And unify the impedance of each welding point of the multiple sets of coaxial cables 21.

In another embodiment, one end of the coaxial cable 21 is connected to the connector module 1, and a mold is used to inject epoxy resin into the welding connection between the tail of each pogo pin 112 and the coaxial cable 21 to form a solid protective layer. The impedance of each welding point of the multiple sets of coaxial cables 21 is unified, and the other end is directly connected to equipment or other types of interfaces as required.

As shown in FIG. 4, the second through hole 13 in the signal converter is divided into a plurality of insulating holes 132 and a plurality of grounding holes 131. The pogo pin 112 inserted into the ground hole 131 is a ground probe, and the pogo pin 112 inserted into the insulating hole 132 is a signal probe. The insulating holes 132 and the grounding holes 131 are spaced apart from each other, and each insulating hole 132 is surrounded by a grounding hole 131. Therefore, in one embodiment, each signal probe is surrounded by four grounding probes with a common ground, so that the signal is not easily interfered. The inner diameter of the grounding hole 131 is the same as the outer diameter of the tail of the pogo pin 112, and the grounding holes 131 are connected to each other. The inner diameter of the insulating hole 132 is slightly larger than the outer diameter of the tail of the pogo pin 112, which facilitates the smooth flow of glue into it during glue filling. .

The signal converter 13 is a multi-layer PCB board in which copper is plated in the ground hole and connected to each other through one of the PCB boards.

In another embodiment, the signal converter 13 is a monolithic piece of conductive metal, and the pogo pin 112 passing through the ground hole 131 is in close contact with the ground hole 131, and the conductive metal is connected to each other to form a grounding mesh, and the pogo pin passing through the insulating hole 132 is in close contact with the ground hole 131. 112 is not in contact with the insulating hole 132, and the gap between the two is insulated by poured epoxy resin.

The above descriptions are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modification, equivalent replacement and improvement made within the principles and spirit of the utility model shall be included in this utility model. Within the scope of protection of utility models.

1: Connector module

11: Kit base

111: Spring sleeve

112: pogo pin

12: Bolt

13: Signal converter

131: Grounding hole

132: Insulation hole

14: Bolt through hole

2: Cable bundle

21: Coaxial cable

22: pipe sleeve

[Figure 1] is a schematic diagram of the structure of the high-speed signal transmission cable of the utility model; [Figure 2] is a schematic diagram of the structure of the connector module; [Figure 3] is the schematic diagram of the back of the kit base; and [Figure 4] is a schematic diagram of the signal converter embedded in the back of the base of the kit.

1: Connector module

11: Kit base

12: Bolt

2: Cable bundle

21: Coaxial cable

22: pipe sleeve

Claims (8)

A high-speed signal transmission cable includes: a cable bundle and at least one connector module, wherein the cable bundle is composed of multiple sets of coaxial cables and a tube sleeve wrapped outside the multiple sets of coaxial cables. The connector The module includes a plurality of pogo pins, a plurality of spring sleeves, a kit base and a signal converter. The kit base has a protrusion in the center and a plurality of first through holes arranged in an array at the protrusion A step-shaped member of the kit base, the bottom of the kit base corresponding to the protrusion in the center has a depression, the signal converter is provided with a plurality of second through holes corresponding to the positions of the first through holes of the kit base, The first through holes and the second through holes corresponding to the two after being embedded in the recess of the base of the kit communicate with each other, the spring sleeves are sleeved outside the spring pins, and one of the spring pins is The tail passes through the first through holes of the kit base and the second through holes of the signal converter and then is welded to a signal wire or a ground wire at one end of the multiple sets of coaxial cables. The high-speed signal transmission cable according to claim 1, wherein at least one bolt through hole is opened on both sides of the protrusion in the center of the kit base, and is fixedly connected with other equipment through a bolt. The high-speed signal transmission cable according to claim 1, wherein an internal resistance of the multiple sets of coaxial cables is 50-75 ohms, the tube sleeve is a soft rubber tube, and a plurality of cross-shaped plastic skeletons are arranged inside the tube sleeve , Used to separate and protect the multiple sets of coaxial cables. The high-speed signal transmission cable according to claim 1, wherein both ends of the multiple sets of coaxial cables are connected to the connector module, and a mold is used to connect the tails of the pogo pins with the multiple sets of coaxial cables An epoxy resin glue is poured into a welding connection of the wire to form a solid protective layer. The high-speed signal transmission cable according to claim 1, wherein one end of the multiple sets of coaxial cables is connected to the connector module, and a mold is used to connect the tails of the pogo pins and the multiple sets of coaxial cables An epoxy resin is poured into a welding joint to form a solid protective layer, and the other end is directly connected to a device or other types of interfaces as required. The high-speed signal transmission cable according to claim 1, wherein the second through holes in the signal converter are divided into a plurality of insulating holes and a plurality of grounding holes, and the insulating holes and the grounding holes are spaced apart from each other, and each The insulating holes are surrounded by the grounding holes, the inner diameter of a grounding hole of each grounding hole is the same as the outer diameter of the tail of each of the pogo pins, and the grounding holes are connected to each other. The inner diameter of an insulating hole of the hole is slightly larger than the outer diameter of the tail of each spring pin. The high-speed signal transmission cable according to claim 6, wherein the signal converter is a multilayer PCB board, wherein the ground holes are plated with copper and are connected to each other through one of the multilayer PCB boards. The high-speed signal transmission cable according to claim 6, wherein the signal converter is a monolithic piece of conductive metal, the pogo pins passing through the grounding holes are in close contact with the grounding holes, and the conductive metal is connected to each other to form For a grounding net, the spring pins passing through the insulating holes are not in contact with the insulating holes, and the gap between the two is insulated by an epoxy resin filled in.

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