CN219777780U - PCB probe - Google Patents

Abstract

The utility model discloses a PCB probe, which aims to solve the technical problems of lower adaptability and flexibility and low assembly production efficiency when testing PCBs with different specifications and sizes in the prior art. The probe comprises a base plate, a pre-probing plate, an insulating plate and a full probing plate, wherein a placement groove is formed in the base plate, the pre-probing plate, the insulating plate and the full probing plate are sequentially stacked in the placement groove, a plurality of pre-probes are arranged on the pre-probing plate, a plurality of probing blocks are arranged on the full probing plate, the device is integrally sheet-shaped, the effective testing contact area is increased, the flexibility and the adaptability are improved, parts are optimized, the production cost is effectively reduced, the assembly is sequentially stacked, the structure is simple, the assembly is convenient, and the production efficiency can be effectively improved.

Description

PCB probe

Technical Field

The utility model belongs to the field of product processing, and particularly relates to a PCB probe.

Background

PCBs, also known as printed circuit boards, are providers of electrical connections for electronic components. In the production process of the PCB, an online tester is required to detect the quality of the PCB, so that the PCB meets the production requirement. The probe is used for detecting the on-off of a PCB circuit, and the existing probe is generally cylindrical and generally comprises a needle tube, a conductive needle and a spring arranged in the needle tube, wherein the conductive needle comprises a needle rod and a needle head. When the circuit is detected, the needle head is pressed, so that the spring abuts against the needle rod, the needle head and a to-be-detected point on the PCB have good electric contact effect, and the existing probe has the following problems:

1. because the probes are cylindrical, the contact area between the probes and the PCB is smaller during testing, when the probes are used for testing PCBs with different specifications and sizes, the number of the probes is required to be correspondingly increased or reduced, namely, the workload of replacement is increased, the effective working time and the testing efficiency are reduced, and the adaptability and the flexibility are lower;

2. during the equipment, place the needle tubing with spring and conductive needle earlier in, fix needle tubing and fixing device again, carry out fixed structure to the probe comparatively complicated, can not assemble, dismantle and change the syringe needle fast, need proofread the position of needle bar, syringe needle and spring and prevent that the skew from leading to the test effect inaccurate moreover, the equipment correction process time is longer, wholly leads to production efficiency low.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide a PCB probe, which aims to solve the technical problems of lower adaptability and flexibility and low assembly production efficiency when testing PCBs with different specifications and sizes in the prior art.

(2) Technical proposal

The utility model provides a PCB probe, includes base plate, the board of spying in advance, insulation board and full board of spying, be equipped with the setting groove on the base plate, the board of spying in advance the insulation board and full board of sping stacks gradually in the setting groove, the board of spying in advance includes at least one probe in advance, the board of spying entirely includes at least one piece of spying.

Further, a clearance gap is formed in the placement groove and located right below the preprobe.

Furthermore, the pre-detection plate further comprises a fixing part, and the detection block is connected with the fixing part and is of an L-shaped integrally formed elastic sheet structure.

Further, the upper end face of the placement groove is lower than the upper end face of the probe block, and the upper end face of the probe block is lower than the upper end face of the pre-probe.

Further, the upper end of the probe block is a serrated probe head, and the probe head consists of a plurality of inverted triangular grooves and regular triangular protrusions.

Further, a second connecting hole is formed in the full detection plate, a conductive plate is arranged above one end of the pre-detection plate, a first connecting hole is formed in the conductive plate, a first wire guide hole corresponding to the first connecting hole is formed in the substrate, and a second wire guide hole corresponding to the second connecting hole is further formed in the substrate.

Further, a plurality of first through holes are formed in the base plate, a plurality of second through holes are formed in the pre-detection plate, a plurality of third through holes are formed in the insulating plate, a plurality of fourth through holes are formed in the full-detection plate, and a plurality of screws are arranged above the full-detection plate.

Further, a plurality of mounting holes are formed in the base plate, and the screws penetrate through the mounting holes to fix the base plate.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

1. the PCB probe comprises a substrate, a pre-probing plate, an insulating plate and a full probing plate, wherein the substrate is provided with a placement groove, the pre-probing plate, the insulating plate and the full probing plate are sequentially stacked in the placement groove, the pre-probing plate is provided with a plurality of pre-probes, and the full probing plate is provided with a plurality of probing blocks.

2. The probe of the utility model is in a sheet shape like a PCB, the area of the full probe plate can be suitable for PCBs with different specifications, and a plurality of PCBs to be tested can be detected at the same time, so that the flexibility and adaptability of the test are improved, and the difficulty of replacement test is reduced.

Drawings

Fig. 1: explosion diagram of the present utility model.

Fig. 2: three-dimensional structure diagram of the present utility model.

Fig. 3: the utility model is a top view.

Fig. 4: the utility model is illustrated in cross-section along line A-A in figure 3.

Fig. 5: the PCB probe detection schematic diagram of the utility model.

Fig. 6: the utility model relates to a cross-section of PCB probe detection action.

The components in the drawings are marked as follows: 1-a substrate; 11-a placement groove; 12-avoiding gaps; 13-mounting holes; 14-first through hole; 15-a first wire guide; 16-a second wire guide; 2-a pre-detection plate; 21-preprobe; 22-a second through hole; 23-a fixing part; 24-probe head; 25-inverted triangle grooves; 26-regular triangular projections; 3-an insulating plate; 31-through hole III; 4-full detection plate; 41-probe blocks; 42-through hole four; 43-a second connection hole; 5-screws; 6-a conductive plate; 61-first connection holes.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model,

referring to figures 1-6 of the drawings,

as shown in fig. 1, a PCB probe includes a base plate 1, a pre-probing plate 2, an insulating plate 3 and a full probing plate 4, where a placement groove 11 is formed on the base plate 1, the pre-probing plate 2, the insulating plate 3 and the full probing plate 4 are sequentially stacked in the placement groove 11, the pre-probing plate 2 includes a plurality of pre-probes 21, the full probing plate 4 includes a plurality of probing blocks 41, after the pre-probes 21 are detected in advance, the probing blocks 41 perform a high-power test on the PCB, and it is to be noted that, since the existing probe is generally cylindrical, the probe is in a sheet shape like the PCB, the PCB probe is called, whether the PCB is at a normal value is detected in advance by the pre-probes 21 on the pre-probing plate 2, after confirming that the quality of the PCB is feasible, the probing blocks 41 of the full probing plate 4 are continuously pressed down to release the high-power for detection, if the pre-probing values of the pre-probing plate 2 are abnormal, the probing blocks 41 of the full probing plate 4 do not need to be contacted with the PCB to be detected, and the full probing block 41 is protected, so that the performance of the full probing plate 4 is more stable every time; the device is whole slice, and the area size of full board 4 can be suitable for different specification PCBs, has improved the flexibility and the adaptability simple structure of test, optimizes the part, stacks in proper order the equipment can, the equipment of being convenient for effectively reduces manufacturing cost, improves production efficiency.

Specifically, the pre-probing plate 2 further comprises a fixing portion 23, the pre-probing pin 21 is connected with the fixing portion 23 and is of an L-shaped elastic sheet structure formed integrally, the pre-probing plate 2 is made of beryllium copper, the conductivity can be enhanced, a layer of gold is plated on the surface, the service life is long after the gold plating is guaranteed through hardening treatment, the adaptability is high, frequent replacement is not needed, the pre-probing plate 2 is light and thin, has rebound resilience, has good elasticity in high-frequency test, and can be stably connected.

The arrangement groove 11 is provided with a clearance gap 12, the clearance gap 12 is located under the preprobe 21, and during detection, the clearance gap 12 can limit the maximum pressing position of the preprobe 21 so as to buffer the stress between the preprobe 21 and the PCB to be tested during detection, and increase the contact stability of the test point, thereby ensuring the consistency and reliability of the test.

As shown in fig. 2, the upper end of the pre-probe 21 is a serrated probe head 24, the probe head 24 is composed of a plurality of inverted triangular grooves 25 and regular triangular protrusions 26, two ends of the inverted triangular grooves 25 are all arranged in an opening manner, and the regular triangular protrusions 26 are formed between two adjacent inverted triangular grooves 25. In the process of detecting the PCB, as the surface of the PCB is coated with the oxide film, the triangular bulges 26 increase the pressure of the pre-probing plate 2 on the PCB, so that the oxide film on the surface of the PCB to be detected is convenient to puncture, each probe head 24 is ensured to be communicated with the copper sheet on the PCB in a contact manner, the sensitivity of the test is further increased, and the stability and the accuracy of the test are improved. For more accurate measurement and detection of characteristic elements, the probe head 24 may be provided with a rounded tip, and the shape of the probe head 24 may be adjusted according to the detection requirement, which is not described herein.

In the detection, there may be multiple ways of contacting the PCB to be tested, for example, the pre-probe 21 moves downward to contact the PCB to be tested, that is, the pre-probe 21 is set to be located right below the PCB to be tested, the PCB to be tested is contacted and pressed down to touch the probe head 24, so that the pre-probe 21 obtains a trigger signal and sends out a control signal to transmit the control part, after the control part recognizes that the signal is a normal range value, the PCB to be tested continues to press down the lower end of the pre-probe 21 into the avoidance space 12, when the upper end surface of the probe head 24 and the upper end surface of the probe block 41 are on the same horizontal line, the PCB to be tested contacts with the upper end surface of the probe block 41, so as to perform detection, or the pre-probe 21 moves upward to contact the PCB to be tested, which is the same principle, but opposite direction, and the contact ways are also multiple, and the flexibility is strong.

As shown in fig. 1, the full probe plate 4 is provided with a second connection hole 43, one end of the pre-probe plate 2 is provided with a conductive plate 6, the conductive plate 6 is provided with a first connection hole 61, the substrate 1 is provided with a first wire guide 15 corresponding to the first connection hole 61, the substrate 1 is also provided with a second wire guide 16 corresponding to the second connection hole 43, the power detection wires can pass through the second connection hole 43 and the second wire guide 16 to be connected with the full probe plate 4 and the probe block 41 for conducting detection, and other power detection wires can also pass through the first wire guide 15 and the first connection hole 61 to be connected with the conductive plate 6, namely, to be connected with the pre-probe plate 2 and the pre-probe 21 for conducting detection, and the insulating plate 3 ensures that the detection between the full probe plate 4 and the pre-probe plate 2 is not interfered with each other.

Specifically, the substrate 1 is provided with a plurality of first through holes 14, the pre-probing plate 2 is provided with a plurality of second through holes 22, the insulating plate 3 is provided with a plurality of third through holes 31, the full probing plate 4 is provided with a plurality of fourth through holes 42, a plurality of screws 5 are arranged above the full probing plate 4, and the outer wall of each screw 5 is provided with first threads (not shown in the figure); the inner walls of the through hole four 42, the through hole three 31, the through hole two 22 and the through hole one 14 are also provided with a second screw thread (not shown in the figure), a third screw thread (not shown in the figure), a fourth screw thread (not shown in the figure) and a fifth screw thread (not shown in the figure), which can be screwed into the through hole four 42, the through hole three 31, the through hole two 22 and the through hole one 14 in turn from top to bottom through the first screw thread (not shown in the figure), so that the base plate 1, the pre-probing plate 2, the insulating plate 3 and the full probing plate 4 can be fixed together, and can be also fixed through a buckle or other modes; meanwhile, the base plate 1 is provided with a plurality of mounting holes 13, the base plate 1 can be mounted on a jig (not shown) only by penetrating the mounting holes 13 through the screws 5, when one or more parts are required to be replaced, the screws 5 are taken down to maintain each part, the disassembling and assembling processes are simple and quick, time and labor are saved, and time and cost are saved, so that the production process difficulty and the manufacturing cost are reduced.

As shown in fig. 3 and 4 (wherein fig. 4 is a cross-sectional view of line A-A in fig. 3), a distance between an upper end surface of the placement groove 11 and an upper end surface of the probe block 41 is 0.15mm, a distance between an upper end surface of the probe block 41 and an upper end surface of the pre-probe 21 is 0.15mm, the pre-probe 21 is higher than the probe block 41 and the probe block 41 is higher than the placement groove 11, the pre-probe plate 2 has a guiding effect on the full probe plate 4, and meanwhile, the insulating plate 3 insulates the pre-probe plate 2 from the full probe plate 4, so that a loop between the pre-probe plate 2 and the full probe plate 4 is not interfered with each other, detection is more stable, conductivity is stronger and more stable during detection, and signal transmission attenuation is less. The full detection plate 4 can be better protected while the accuracy of detection data is ensured, and the full detection plate 4 is prevented from being burnt out due to direct contact and high power release.

As shown in fig. 5 and 6, two PCB probes are placed symmetrically, a plurality of battery packs to be tested are sequentially arranged between the two PCB probes, and the battery packs are pressed downwards, so that electrodes on two sides of the battery packs contact the pre-probes 21, and after the battery packs are qualified for detection, the battery packs continue to contact the upper end surfaces of the probe blocks 41, so that the whole action is simpler, the detection is more convenient, and the detection speed is increased.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the embodiments of the disclosure may be suitably combined to form other embodiments as will be understood by those skilled in the art.

Claims (8)

1. The utility model provides a PCB probe, includes base plate (1), pre-probe board (2), insulation board (3) and full probe board (4), its characterized in that: the substrate (1) is provided with a placement groove (11), the pre-detection plate (2), the insulating plate (3) and the full detection plate (4) are sequentially stacked in the placement groove (11), the pre-detection plate (2) is provided with a plurality of pre-detection probes (21), and the full detection plate (4) is provided with a plurality of detection blocks (41).

2. A PCB probe according to claim 1, wherein: the arrangement groove (11) is provided with a avoidance space (12), and the avoidance space (12) is positioned right below the preprobe (21).

3. A PCB probe according to claim 1, wherein: the pre-detection plate (2) further comprises a fixing part (23), and the detection block (41) is connected with the fixing part (23) and is of an L-shaped integrally formed elastic sheet structure.

4. A PCB probe according to claim 2, characterized in that: the upper end face of the placement groove (11) is lower than the upper end face of the probe block (41), and the upper end face of the probe block (41) is lower than the upper end face of the pre-probe (21).

5. A PCB probe according to claim 1, wherein: the upper end of the pre-probe (21) is provided with a serrated probe head (24), and the probe head (24) consists of a plurality of inverted triangular grooves (25) and regular triangular bulges (26).

6. A PCB probe according to claim 1, wherein: be equipped with second connecting hole (43) on full board (4), the one end top of board (2) is visited in advance is equipped with conducting plate (6), be equipped with first connecting hole (61) on conducting plate (6), be equipped with on base plate (1) with first wire hole (15) that first connecting hole (61) position corresponds, still be equipped with on base plate (1) with second wire hole (16) that second connecting hole (43) position corresponds.

7. A PCB probe according to claim 1, wherein: be equipped with a plurality of through-hole one (14) on base plate (1), be equipped with a plurality of through-hole two (22) on advance spy board (2), be equipped with a plurality of through-hole three (31) on insulation board (3), be equipped with a plurality of through-hole four (42) on full spy board (4), full spy board (4) top is equipped with a plurality of screw (5).

8. A PCB probe according to claim 7, wherein: the base plate (1) is provided with a plurality of mounting holes (13), and the screws (5) penetrate through the mounting holes (13) to fix the base plate (1).