Half-hole pad PCB probe block

Abstract

The invention relates to a half-hole bonding pad PCB probe block, and the probe block comprises a fixed housing which is internally provided with a plurality of insertion cavities which are arranged in parallel; the plurality of first PCBs are arranged in the insertion cavity of the fixed shell; the first PCB is provided with a first half-hole bonding pad and a first FPC flat cable bonding pad. The first half-hole bonding pad is connected with the first FPC flat cable bonding pad through a first PCB copper foil; the plurality of second PCBs are arranged in the insertion cavity of the fixed shell, and the second PCBs and the first PCBs are alternately arranged; the second PCB is provided with a second half-hole bonding pad and a second FPC flat cable bonding pad, and the second half-hole bonding pad is connected with the second FPC flat cable bonding pad through a second PCB copper foil; the plurality of probe suites are arranged on the first half-hole bonding pad or the second half-hole bonding pad; and the plurality of FPC flat cables are welded on the first FPC flat cable bonding pad or the second FPC flat cable bonding pad. According to the invention, reliable transmission of high-speed signals can be satisfied while the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic testing, in particular to a half-hole solder pad PCB probe block. BACKGROUND

[0002] The probe block is a modular test component integrated with precision probes, mainly used in scenarios such as semiconductor wafer testing and electronic component detection, and its core function is to realize high-precision electrical connection and signal transmission between the test equipment and the measured object. In the prior art, the probe block is connected to the mainboard through a cable, and the cable is connected to the probe sleeve in the probe block through soldering. This connection method cannot be efficiently produced due to the increase in probe density in high-density probe blocks, and the impedance between the signal line and the ground line is relatively large, which cannot realize reliable transmission of high-speed signals, and will produce certain electromagnetic radiation interference to the outside. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a half-hole solder pad PCB probe block that can improve production efficiency while meeting the reliable transmission of high-speed signals.

[0004] To solve the above technical problems, the present application provides a half-hole solder pad PCB probe block, comprising: A fixed shell is provided with a plurality of parallel plug-in cavities in the fixed shell; A plurality of first PCB boards are arranged in the plug-in cavities of the fixed shell; the first PCB board is provided with a first half-hole solder pad and a first FPC flat cable pad; the first half-hole solder pad and the first FPC flat cable pad are connected through a first PCB copper foil; A plurality of second PCB boards are arranged in the plug-in cavities of the fixed shell and are alternately stacked with the first PCB boards; the second PCB board is provided with a second half-hole solder pad and a second FPC flat cable pad, and the second half-hole solder pad and the second FPC flat cable pad are connected through a second PCB copper foil; A plurality of probe sleeves are arranged on the first half-hole solder pad or the second half-hole solder pad; A plurality of FPC flat cables are welded on the first FPC flat cable pad or the second FPC flat cable pad.

[0005] In an embodiment of the present application, the second half-hole solder pad on the second PCB board and the first half-hole solder pad on the first PCB board are arranged alternately.

[0006] In an embodiment of the present application, the probe sleeve includes a probe and a probe sleeve, the tail of the probe sleeve is inserted into the first half-hole solder pad or the second half-hole solder pad from the side and is welded and fixed, and the probe is telescopically installed in the probe sleeve.

[0007] In one embodiment of the present application, a probe panel is further included, which is embedded in the end surface of the fixed shell.

[0008] In one embodiment of the present application, a plurality of probe holes are arranged on the probe panel for the probes of the probe kit, and the arrangement of each row of probe holes on the probe panel is consistent with the arrangement of the corresponding first or second half-hole pads.

[0009] In one embodiment of the present application, the first FPC flat cable pad is arranged on the first PCB board away from the opposite edge of the first half-hole pad.

[0010] In one embodiment of the present application, the second FPC flat cable pad is arranged on the second PCB board away from the opposite edge of the second half-hole pad.

[0011] In one embodiment of the present application, the assembly gap between the first and second PCB boards and the fixed shell is filled with glue.

[0012] In one embodiment of the present application, the fixed shell is provided with shell positioning holes on the upper and lower surfaces, and the first and second PCB boards are each provided with a PCB positioning hole, and a fastener passes through the shell positioning hole and the PCB positioning hole to fix the fixed shell and the first and second PCB boards.

[0013] In one embodiment of the present application, the fastener includes a positioning screw and a locking nut, and the positioning screw is locked by the locking nut after passing through the shell positioning hole and the PCB positioning hole.

[0014] The above technical solution of the present application has the following beneficial effects compared with the prior art: The half-hole pad PCB probe block of the present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in conjunction with the drawings, in which Figure 1 is a side view of the half-hole pad PCB probe block in the preferred embodiment of the present application; Figure 2 is a structural schematic view of the PCB in the half-hole pad PCB probe block of the present application; Figure 3 is the assembly schematic diagram of PCB and probe assembly in the semi-hole pad PCB probe block of the present application, PCB and FPC soft board; Figure 4 is the front elevation view of the semi-hole pad PCB probe block of the present application after the assembly of PCB and probe assembly; Figure 5 is the structure diagram of the fixed shell in the semi-hole pad PCB probe block of the present application; Figure 6 is the partial enlarged view of the assembly of PCB, fixed shell and positioning screw in the semi-hole pad PCB probe block of the present application; Figure 7 is the probe panel in the semi-hole pad PCB probe block of the present application. DETAILED DESCRIPTION

[0016] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it, but the embodiments are not limiting to the present application.

[0017] As shown in Figure 1 and 5 , the present application provides a semi-hole pad PCB probe block, comprising: a fixed shell 600, a plurality of parallel arranged cavities 601 are arranged in the fixed shell 600, a first PCB board 200 and a second PCB board 300 are alternately inserted into the cavities 601; As shown in Figure 2 and 3 , a plurality of first semi-hole pads 201 are arranged on the edge of the first PCB board 200 on one side in the first direction A at equal intervals along the second direction B, a first FPC flat cable pad 202 is arranged on the opposite side of the first PCB board 200 in the first direction A, the first semi-hole pads 201 are connected through the first PCB copper foil 203 and the first FPC flat cable pad 202, and a plurality of PCB positioning holes 204 are arranged on the first PCB board 200; As shown in Figure 4 , the second PCB board 300 is arranged in an alternating and stacked manner with the first PCB board 200 in the cavities 601, a plurality of second semi-hole pads 301 are arranged on one side edge of the second PCB board 300, the first semi-hole pads 201 and the second semi-hole pads 301 are staggered with each other in the third direction C; the second PCB board 300 is provided with a second FPC flat cable pad, and the second semi-hole pads 301 are connected with the second FPC flat cable pad through a second PCB copper foil; Multiple probe kits 100 are disposed on a first half-hole pad 201 or a second half-hole pad 301. Each probe kit 100 includes a probe 101 and a sleeve 102. The tail of the sleeve 102 is inserted into the first half-hole pad 201 or the second half-hole pad 301 from the side and welded in place. The probe 101 is telescopically installed inside the sleeve 102, and the two are elastically connected. like Figure 2 , Figure 3 , Figure 4 As shown, the sleeve 102 in the probe kit 100 is laterally inserted into the first half-hole pad 201 on the first PCB board 200 and the second half-hole pad 301 on the second PCB board 300. The height after soldering is reduced, thus allowing for a smaller spacing between the first PCB board 200 and the second PCB board 300, enabling a high-density arrangement of the probe kit 100. The sleeve 102 in the probe kit 100 can be batch-soldered with the first half-hole pad 201 on the first PCB board 200 and the second half-hole pad 301 on the second PCB board 300 via soldering. The FPC flexible flat cable 400 can also be batch-soldered with the FPC flat cable pad 202 on the first PCB board 200 via soldering, thereby improving production efficiency.

[0018] The FPC flexible flat cable 400 is soldered to the first FPC flat cable pad 202 of the first PCB board 200 or the second FPC flat cable pad of the second PCB board 300. Since the impedance of the signals inside the first PCB board 200, the second PCB board 300 and the FPC flexible flat cable 400 is controllable, high-speed signals can be reliably transmitted in the probe block.

[0019] like Figure 5 and 6 As shown, the top of the fixed housing 600 has multiple housing positioning holes 602, and the first PCB board and the second PCB board are provided with PCB positioning holes 204. Positioning screws are inserted into the housing positioning holes 602 and PCB positioning holes 204 to fix the first PCB board 200 and the second PCB board 300 into the fixed housing 600, and then locked by locking nuts.

[0020] like Figure 7 As shown, it also includes a probe panel 700, which is embedded in the end face of the fixed housing 600. The probe panel 700 has probe holes 701 corresponding to the first half-hole pad 201 and the second half-hole pad 301. The probe panel 700 has a plurality of probe holes 701 arranged in a regular pattern, and the probes 101 in the probe kit 100 pass through the probe holes 701 to achieve external connection.

[0021] In this embodiment, the probe panel 700 and the fixed housing 600 are connected by a detachable structure.

[0022] Furthermore, the first FPC cable pad 202 is located on the opposite edge of the first PCB board 200 away from the first half-hole pad 201, and the second FPC cable pad 202 of the second PCB board 300 is located on its opposite edge away from the second half-hole pad 301.

[0023] In this embodiment, the assembly gap between the first PCB board 200, the second PCB board 300, and the fixed housing 600 is filled with colloid 800. For example... Figure 1 As shown, the colloid 800 is made of plastic injection molding and fixes the FPC flexible flat cable 400, the first PCB board 200, the second PCB board 300 and the fixed housing 600, so that the components form an integrated structure, suppressing the change in contact resistance caused by vibration. At the same time, the colloid 800 wraps the solder joints to play an insulating and shielding role, reducing electromagnetic radiation interference.

[0024] This invention combines a stacked PCB structure with half-hole pad lateral soldering technology to make the impedance of signals inside the first PCB board 200, the second PCB board 300, and the FPC flexible cable 400 controllable, thereby ensuring reliable transmission of high-speed signals in the probe block. Its specific working principle is as follows: The test signal is transmitted from the FPC flexible flat cable 400 through the first FPC flat cable pad 202 and the second FPC flat cable pad, through the first PCB copper foil 203 and the second PCB copper foil to the first half-hole pad 201 and the second half-hole pad 301, and then through the soldering probe sleeve 102 to the retractable probe 101. Finally, the probe 101 contacts the object under test to complete the electrical connection. The return signal is transmitted in the opposite direction along the same path to form a complete test loop.

[0025] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A PCB probe block for a half-hole pad, characterized in that, include: A fixed housing, wherein the fixed housing is provided with a plurality of parallelly arranged insertion cavities; Multiple first PCBs are disposed in the insertion cavity of the fixed housing; the first PCBs are provided with first half-hole pads and first FPC cable pads; the first half-hole pads and the first FPC cable pads are connected by first PCB copper foil; Multiple second PCBs are disposed in the insertion cavity of the fixed housing and are alternately stacked with the first PCB; the second PCB is provided with a second half-hole pad and a second FPC cable pad, and the second half-hole pad and the second FPC cable pad are connected by a second PCB copper foil. Multiple probe kits are disposed on the first half-hole pad or the second half-hole pad; Multiple FPC cables, wherein the FPC cables are soldered to a first FPC cable pad or a second FPC cable pad.

2. The PCB probe block for half-hole pads according to claim 1, characterized in that, The second half-hole pad on the second PCB board and the first half-hole pad on the first PCB board are staggered in the vertical direction.

3. The PCB probe block for half-hole pads according to claim 1, characterized in that, The probe kit includes a probe and a probe sleeve. The tail of the probe sleeve is inserted into the first half-hole pad or the second half-hole pad from the side and welded in place. The probe is telescopically mounted inside the probe sleeve.

4. The PCB probe block for half-hole pads according to claim 4, characterized in that, It also includes a probe panel, which is embedded in the end face of the fixed housing.

5. The PCB probe block for half-hole pads according to claim 4, characterized in that, The probe panel is provided with multiple rows of probe holes for probes to pass through the probe kit. The arrangement of each row of probe holes on the probe panel is consistent with the arrangement of the corresponding first half-hole pad or second half-hole pad.

6. The PCB probe block for half-hole pads according to claim 1, characterized in that, The first FPC cable pad is located on the opposite edge of the first PCB board away from the first half-hole pad.

7. The PCB probe block for half-hole pads according to claim 1, characterized in that, The second FPC cable pad is located on the opposite edge of the second PCB board away from the second half-hole pad.

8. The PCB probe block for half-hole pads according to claim 1, characterized in that, The assembly gap between the first PCB board, the second PCB board and the fixed housing is filled with colloid.

9. The PCB probe block for half-hole pads according to claim 1, characterized in that, The fixed housing is provided with housing positioning holes on the upper and lower sides, and PCB positioning holes are provided on the first PCB board and the second PCB board. Fasteners pass through the housing positioning holes and PCB positioning holes to fix the fixed housing to the first PCB board and the second PCB board.

10. The PCB probe block for half-hole pads according to claim 9, characterized in that, The fasteners include a positioning screw and a locking nut. The positioning screw passes through the housing positioning hole and the PCB positioning hole and is then locked by the locking nut.

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